CN116119953A - Method for cooperatively disposing printing and dyeing sludge by cement kiln - Google Patents
Method for cooperatively disposing printing and dyeing sludge by cement kiln Download PDFInfo
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- CN116119953A CN116119953A CN202310277793.0A CN202310277793A CN116119953A CN 116119953 A CN116119953 A CN 116119953A CN 202310277793 A CN202310277793 A CN 202310277793A CN 116119953 A CN116119953 A CN 116119953A
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- 239000010802 sludge Substances 0.000 title claims abstract description 134
- 239000004568 cement Substances 0.000 title claims abstract description 56
- 238000004043 dyeing Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000000843 powder Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000002028 Biomass Substances 0.000 claims abstract description 19
- 238000010008 shearing Methods 0.000 claims abstract description 16
- 238000010790 dilution Methods 0.000 claims abstract description 9
- 239000012895 dilution Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 42
- 230000015556 catabolic process Effects 0.000 claims description 24
- 238000006731 degradation reaction Methods 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 23
- 230000003139 buffering effect Effects 0.000 claims description 16
- 239000001913 cellulose Substances 0.000 claims description 16
- 229920002678 cellulose Polymers 0.000 claims description 16
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 241000723418 Carya Species 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 235000009025 Carya illinoensis Nutrition 0.000 claims description 9
- 241001453450 Carya illinoinensis Species 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 9
- 238000006297 dehydration reaction Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 9
- PKMTWMDBJHRDBM-ODZAUARKSA-N (z)-but-2-enedioic acid;zinc Chemical compound [Zn].OC(=O)\C=C/C(O)=O PKMTWMDBJHRDBM-ODZAUARKSA-N 0.000 claims description 8
- GQGYFJAJOIDKHX-UHFFFAOYSA-N cyclopenta-1,3-diene 1-cyclopenta-2,4-dien-1-ylhexane-1-thiol iron(2+) Chemical compound [Fe++].c1cc[cH-]c1.CCCCCC(S)[c-]1cccc1 GQGYFJAJOIDKHX-UHFFFAOYSA-N 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000010902 straw Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- HFBMWMNUJJDEQZ-UHFFFAOYSA-N acryloyl chloride Chemical compound ClC(=O)C=C HFBMWMNUJJDEQZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 239000010420 shell particle Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract 1
- 238000004898 kneading Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 7
- 238000007865 diluting Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000012024 dehydrating agents Substances 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical group [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- -1 zinc carboxylate Chemical group 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/428—Organic materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the field of building materials, in particular to a method for cooperatively disposing printing and dyeing sludge by a cement kiln; conveying biomass materials to a two-stage shearing machine for shearing to small stages, conveying printing and dyeing sludge to a sludge tank by using a screw conveyor, adding water into the sludge tank for dilution, adding clinker powder, fully stirring, pumping to a plate-and-frame filter press to obtain mud cakes, adding raw material powder to a double-screw mixer, kneading, adding cement raw material, and taking the cement raw material as a production raw material of cement clinker to enter a rotary kiln for calcination. The method can realize the green treatment of the printing and dyeing sludge by changing waste into valuables, and the prepared cement has excellent compressive strength.
Description
Technical Field
The invention relates to the technical field of dyeing sludge treatment, in particular to a method for cooperatively treating dyeing sludge by a cement kiln.
Background
With the rapid development of industrial production and the continuous growth of urban population, especially with the continuous improvement of the living standard of people, the total amount of industrial wastewater (especially textile printing and dyeing wastewater) and urban living wastewater is increasing. According to the related environmental protection laws and regulations, the requirements of pollution emission reduction are combined, and the printing and dyeing wastewater is subjected to pretreatment to reach the requirement of pipe feeding and then is subjected to centralized treatment in a sewage treatment plant to reach the standard and then is discharged. However, while the sewage is subjected to primary pretreatment and advanced purification treatment of a sewage plant, a large amount of sludge is generated, and a phenomenon of 'sludge surrounding city' occurs; the sludge has high water content and large volume, and various toxic and harmful substances are concentrated, if the sludge cannot be safely treated, the normal operation of a sewage treatment plant is directly affected, and secondary pollution is caused to the surrounding environment.
For example, chinese patent CN202210997778.9 proposes a method for preparing a dehydrating agent for printing and dyeing sludge and conditioning the printing and dyeing sludge. Preparing pine wood charcoal under a certain condition, and preparing mixed particles by taking graphene oxide, magnesium chloride and aluminum oxide as raw materials; pine biochar and mixed particles are used as raw materials; adding acrylamide for grafting, and drying to obtain black powder; and mixing and grinding the black powder and the spinel powder, and sieving to obtain the printing and dyeing sludge dehydrating agent. And conditioning the printing and dyeing sludge by the prepared printing and dyeing sludge dehydrating agent, and improving the sludge dehydration performance. The sludge dehydrating agent can effectively improve the dehydration performance of sludge, the water content of a sludge filter cake is reduced to 73.59% -79.55%, and the specific resistance of the sludge is reduced by 34.25% -72.21%.
In another example, chinese patent CN202210832985.9 provides a method for treating nondegradable organic wastewater by using a carbon-based adsorbent of printing and dyeing sludge, which comprises sequentially drying, crushing, carbonizing and sieving the printing and dyeing sludge to obtain a peat-based adsorbent of printing and dyeing sludge; then directly putting the printing and dyeing sludge carbon-based adsorbent into the organic wastewater difficult to degrade, and performing adsorption treatment at room temperature to obtain purified effluent after adsorption treatment; or the printing and dyeing sludge carbon-based adsorbent is used as a filter material to be filled in a filter column, and then the organic wastewater difficult to degrade is introduced into the filter column for adsorption treatment, so as to obtain purified effluent after adsorption treatment; aiming at the specificity of the printing and dyeing sludge raw material, the mesoporous-rich printing and dyeing sludge carbon-based adsorbent is obtained through carbonization treatment, has good adsorption performance on refractory organic wastewater pollutants, can reduce the running cost of a sewage treatment plant to realize the treatment of waste with waste, and simultaneously realizes the low-cost and high-value application of low-quality sludge.
The annual output of the printing and dyeing sludge generated by water treatment can reach about 2100 ten thousand tons of textile printing and dyeing sludge. The printing and dyeing sludge mainly contains various dyes, surfactants, additives, polycyclic Aromatic Hydrocarbons (PAHs), persistent Organic Pollutants (POPs), heavy metals and the like. If the treatment is improper, secondary pollution is easily caused to underground water and soil, toxicity is generated to other organisms, and environmental safety and health are affected. The traditional printing and dyeing sludge treatment mode comprises land utilization, sanitary landfill, composting, heat treatment and the like. Although low cost, easy to operate are advantages of land utilization and sanitary landfills, the hazards of occupying large areas of land, latent land and fluids do not facilitate future planning and development of towns, and also result in a large amount of available energy sources and secondary pollution.
Disclosure of Invention
The invention aims to solve at least one technical problem in the background art, and provides a method for cooperatively disposing printing and dyeing sludge by a cement kiln.
In order to achieve the above object, the present invention provides the following technical solutions:
a method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: according to the mass parts, 1-5 parts of biomass materials are conveyed to a two-section shearing machine and sheared to small sections (a) of 70-90cm and 5-15cm respectively;
step 2: conveying 6 to 6.5 parts of printing and dyeing sludge into a sludge tank by using a screw conveyor, adding water into the sludge tank for dilution, adding 10 to 20 percent of clinker powder, fully stirring for 10 to 15 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 to 60 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 0.5-1 part of raw material powder on the upper part of the mixer, fully mixing the raw material powder with the raw material powder (b) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20-30 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: mixing the obtained material (d) into cement raw materials in a proportion of 10-15% by mass, taking the mixed material as a raw material for producing cement clinker, entering a rotary kiln, and calcining at 1200-1400 ℃.
Preferably, the biomass material in the step 1 is straw, wood chips, branches and the like.
Preferably, the water content of the sludge tank in the step 2 after being diluted by adding water is 95-98%.
Preferably, the pressure filtration pressure in the step 2 is 12-24kg/cm2.
Preferably, the water content of the mud cake in the step 2 is 55 to 60 percent
Preferably, the stirring time in the step 3 is 30 to 60 minutes.
Preferably, 6-10 air cannons are added outside the position A in the step 4, and when the material (d) is burned at the position A for 3-5 minutes each time, the air cannons are operated for 1-2 times.
Furthermore, since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, and a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.1-0.6% of that of the printing and dyeing sludge is added in the step 2 for treatment.
Preferably, the preparation method of the sludge degradation agent comprises the following steps:
s1: adding 50-100 parts of crushed hickory shell particles (10-70 meshes) into 500-1000 parts of dichloromethane and 220-252 parts of acryloyl chloride according to parts by weight, stirring for 12-15 hours at 50-70 ℃, and filtering to obtain hickory shells containing propenyl cellulose;
s2: according to the mass portion, 10-20 portions of (ferrocenyl) hexanethiol, 0.5-2 portions of zinc maleate, 3-6 portions of sodium tert-butoxide, 100-200 portions of pecan shell of propenyl cellulose and 1000-1200 portions of dichloromethane are added for temperature control reaction, and then the sludge degradation agent is obtained after filtration and drying.
Preferably, the reaction temperature in the S2 is 50-70 ℃ and the reaction time is 100-150min.
Reaction mechanism:
in the invention, (ferrocenyl) hexanethiol, zinc maleate and pecan shell of propenyl cellulose undergo sulfhydryl addition reaction to obtain the sludge degradation agent containing functional groups such as ferrocene, zinc carboxylate and the like.
The beneficial effects are that:
1. according to the method, through the thiol addition reaction of the (ferrocenyl) hexanethiol, the zinc maleate and the pecan shell of the propenyl cellulose, the sludge degradation agent containing functional groups such as ferrocene, zinc carboxylate and the like is obtained, so that the degradation amount of printing and dyeing sludge is effectively improved, and the method has important significance for sludge reduction;
2. the method adopts the cement kiln to cooperatively treat the printing and dyeing sludge, mixes cement raw materials into the cement kiln to be used as raw materials for producing cement clinker for calcination, and realizes the green treatment of the printing and dyeing sludge by changing waste into valuables.
3. The prepared cement has the advantages of high specific surface area, high compressive strength and simple process.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
Example 1
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 10kg of biomass materials to a two-section shearing machine, and shearing to 70cm and 5cm small sections (a) respectively;
step 2: conveying 60kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 10% of clinker powder, fully stirring for 10 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 5kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (c) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was mixed with cement raw materials in a proportion of 10%, and fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1200 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 95%.
The filter pressing pressure in the step 2 is 12kg/cm2.
The water content of the mud cake in the step 2 is 55 percent
The stirring time in the step 3 is 30 minutes.
In the step 4, 6 air cannons are added outside the position A, and when the material (d) is burned at the position A for 3 minutes, the air cannons are operated for 1 time.
Since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.1% of that of the printing and dyeing sludge is added for treatment in the step 2.
The preparation method of the sludge degradation agent comprises the following steps:
s1: adding 50g of crushed hickory shell particles (10-70 meshes) into 500g of dichloromethane and 220g of acryloyl chloride, stirring at 50 ℃ for 12 hours, and filtering to obtain hickory shells containing propenyl cellulose;
s2: then 10g of (ferrocenyl) hexanethiol, 0.5g of zinc maleate, 3g of sodium tert-butoxide, 100g of pecan shell of propenyl cellulose and 1000g of dichloromethane are added for temperature control reaction, and then the sludge degradation agent is obtained after filtration and drying.
The reaction temperature in the step S2 is 50 ℃, and the reaction time is 100min.
Example 2
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 30kg of biomass materials to a two-section shearing machine, and shearing the biomass materials to 80cm and 10cm small sections (a) respectively;
step 2: conveying 65kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 15% of clinker powder, fully stirring for 12 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 7.5kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (b) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 25 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was incorporated into cement raw materials at a ratio of 12%, fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1300 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 96%.
The filter pressing pressure in the step 2 is 18kg/cm2.
The water content of the mud cake in the step 2 is 60 percent
The stirring time in the step 3 is 45 minutes.
In the step 4, 8 air cannons are added outside the position A, and when the material (d) is burned at the position A for 4 minutes, the air cannons run for 1 time.
Since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.3% of that of the printing and dyeing sludge is added for treatment in the step 2.
The preparation method of the sludge degradation agent comprises the following steps:
s1: adding 75g of crushed hickory shell particles (10-70 meshes) into 750g of dichloromethane and 234g of acryloyl chloride, stirring at 60 ℃ for 14h, and filtering to obtain hickory shells containing propenyl cellulose;
s2: then 15g of (ferrocenyl) hexanethiol, 1.3g of zinc maleate, 4.5g of sodium tert-butoxide, 150g of pecan shell of propenyl cellulose and 1100g of dichloromethane are added for temperature control reaction, and then the sludge degradation agent is obtained after filtration and drying.
The reaction temperature in the step S2 is 60 ℃, and the reaction time is 125min.
Example 3
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 50kg of biomass materials to a two-section shearing machine, and shearing the biomass materials to small sections (a) of 90cm and 15cm respectively;
step 2: conveying 65kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 20% of clinker powder, fully stirring for 15 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 60 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 10kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (c) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 30 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was mixed into cement raw material at a ratio of 15%, fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1400 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 98%.
The filter pressing pressure in the step 2 is 24kg/cm2.
The water content of the mud cake in the step 2 is 60 percent
The stirring time in the step 3 is 60 minutes.
In the step 4, 10 air cannons are added outside the position A, and when the material (d) is burned at the position A for 5 minutes, the air cannons are operated for 2 times.
Since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.6% of that of the printing and dyeing sludge is added for treatment in the step 2.
The preparation method of the sludge degradation agent comprises the following steps:
s1: adding 100g of crushed hickory shell particles (10-70 meshes) into 1000g of dichloromethane and 252g of acryloyl chloride, stirring at 70 ℃ for 15h, and filtering to obtain hickory shells containing propenyl cellulose;
s2: then adding 20g of (ferrocenyl) hexanethiol, 2g of zinc maleate, 6g of sodium tert-butoxide, 200g of pecan shell of propenyl cellulose and 1200g of dichloromethane, controlling the temperature for reaction, filtering and drying to obtain the sludge degradation agent.
The reaction temperature in the step S2 is 70 ℃, and the reaction time is 150min.
Comparative example 1
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 10kg of biomass materials to a two-section shearing machine, and shearing to 70cm and 5cm small sections (a) respectively;
step 2: conveying 60kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 10% of clinker powder, fully stirring for 10 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 5kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (c) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was incorporated into cement raw materials at a ratio of 10%, fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1200 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 95%.
The filter pressing pressure in the step 2 is 12kg/cm2.
The water content of the mud cake in the step 2 is 55 percent
The stirring time in the step 3 is 30 minutes.
In the step 4, 6 air cannons are added outside the position A, and when the material (d) is burned at the position A for 3 minutes, the air cannons are operated for 1 time.
Comparative example 2
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 10kg of biomass materials to a two-section shearing machine, and shearing to 70cm and 5cm small sections (a) respectively;
step 2: conveying 60kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 10% of clinker powder, fully stirring for 10 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 5kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (c) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was incorporated into cement raw materials at a ratio of 10%, fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1200 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 95%.
The filter pressing pressure in the step 2 is 12kg/cm2.
The water content of the mud cake in the step 2 is 55 percent
The stirring time in the step 3 is 30 minutes.
In the step 4, 6 air cannons are added outside the position A, and when the material (d) is burned at the position A for 3 minutes, the air cannons are operated for 1 time.
Since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.1% of that of the printing and dyeing sludge is added for treatment in the step 2.
The preparation method of the sludge degradation agent comprises the following steps:
s1: adding 50g of crushed hickory shell particles (10-70 meshes) into 500g of dichloromethane and 220g of acryloyl chloride, stirring at 50 ℃ for 12 hours, and filtering to obtain hickory shells containing propenyl cellulose;
s2: then adding 0.5g of zinc maleate, 3g of sodium tert-butoxide, 100g of pecan shell of propenyl cellulose and 1000g of dichloromethane, controlling the temperature for reaction, filtering and drying to obtain the sludge degradation agent.
The reaction temperature in the step S2 is 50 ℃, and the reaction time is 100min.
Comparative example 3
A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following specific steps:
step 1: conveying 10kg of biomass materials to a two-section shearing machine, and shearing to 70cm and 5cm small sections (a) respectively;
step 2: conveying 60kg of printing and dyeing sludge into a sludge tank by using a screw conveyor, diluting the sludge tank by adding water, adding 10% of clinker powder, fully stirring for 10 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 5kg of raw material powder on the upper part of the mixer, fully mixing the raw material powder (b) with the raw material powder (c) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: the material (d) obtained was incorporated into cement raw materials at a ratio of 10%, fed into a rotary kiln as a raw material for cement clinker production, and calcined at 1200 ℃.
The biomass materials in the step 1 are straws, wood chips, branches and the like.
And (2) adding water into the sludge tank in the step (2) for dilution, wherein the water content is 95%.
The filter pressing pressure in the step 2 is 12kg/cm2.
The water content of the mud cake in the step 2 is 55 percent
The stirring time in the step 3 is 30 minutes.
In the step 4, 6 air cannons are added outside the position A, and when the material (d) is burned at the position A for 3 minutes, the air cannons are operated for 1 time.
Since the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.1% of that of the printing and dyeing sludge is added for treatment in the step 2.
The preparation method of the sludge degradation agent comprises the following steps:
s1: adding 50g of crushed hickory shell particles (10-70 meshes) into 500g of dichloromethane and 220g of acryloyl chloride, stirring at 50 ℃ for 12 hours, and filtering to obtain hickory shells containing propenyl cellulose;
s2: then adding 10g of (ferrocenyl) hexanethiol, 3g of sodium tert-butoxide, 100g of pecan shell of propenyl cellulose and 1000g of dichloromethane, controlling the temperature for reaction, filtering and drying to obtain the sludge degradation agent.
The reaction temperature in the step S2 is 50 ℃, and the reaction time is 100min.
The analysis of the content of the printing sludge in the above examples and comparative examples is shown in the following table:
the prepared cements prepared in the above examples and comparative examples were tested and the results are shown in the following table:
the foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. A method for cooperatively disposing printing and dyeing sludge by a cement kiln comprises the following operation steps:
step 1: according to the mass parts, 1-5 parts of biomass materials are conveyed to a two-section shearing machine and sheared to small sections (a) of 70-90cm and 5-15cm respectively;
step 2: conveying 6 to 6.5 parts of printing and dyeing sludge into a sludge tank by using a screw conveyor, adding water into the sludge tank for dilution, adding 10 to 20 percent of clinker powder, fully stirring for 10 to 15 minutes, pumping to a plate-and-frame filter press, maintaining the filter pressing pressure, and obtaining a mud cake (b) after the filter pressing time is 55 to 60 minutes;
step 3: feeding the raw material powder (b) into a double-screw mixer, spraying 0.5-1 part of raw material powder on the upper part of the mixer, fully mixing the raw material powder with the raw material powder (b) to obtain a material (c), and feeding the raw material powder (c) and the raw material powder (a) into a kneader to knead for 20-30 minutes to obtain a material (d);
step 4: conveying the material (d) into a buffering bin by adopting a large-inclination-angle belt, conveying the lower part of the buffering bin to a position (a position A) close to a tertiary air pipe at the top of a cement kiln decomposing furnace by using a shaftless reamer, and locking air by adopting a tertiary air locking valve at the position A and a reamer interface part;
step 5: mixing the obtained material (d) into cement raw materials in a proportion of 10-15% by mass, taking the mixed material as a raw material for producing cement clinker, entering a rotary kiln, and calcining at 1200-1400 ℃.
2. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: the biomass materials in the step 1 are straws, wood chips, branches and the like.
3. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: the water content of the sludge tank in the step 2 after being diluted by water is 95-98%.
4. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: the filter pressing pressure in the step 2 is 12-24kg/cm 2 。
5. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: the water content of the mud cake in the step 2 is 55-60%.
6. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: and in the step 3, the stirring time is 30-60 minutes.
7. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: in the step 4, 6-10 air cannons are added outside the position A, and when the material (d) is burnt at the position A for 3-5 minutes, the air cannons run for 1-2 times.
8. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: because the sludge contains a large amount of extracellular polymers, the high molecular substances generated by the microorganisms can influence the dehydration effect, so that the water content of the sludge is higher, a large amount of smoke is generated, and the sludge degradation agent with the mass percent of 0.1-0.6% of the printing and dyeing sludge is added in the step 2 for treatment.
9. The method for co-disposal of printed sludge in a cement kiln according to claim 1, wherein: the preparation method of the sludge degradation agent comprises the following steps:
s1: adding 50-100 parts of crushed hickory shell particles (10-70 meshes) into 500-1000 parts of dichloromethane and 220-252 parts of acryloyl chloride according to parts by weight, stirring for 12-15 hours at 50-70 ℃, and filtering to obtain hickory shells containing propenyl cellulose;
s2: according to the mass portion, 10-20 portions of (ferrocenyl) hexanethiol, 0.5-2 portions of zinc maleate, 3-6 portions of sodium tert-butoxide, 100-200 portions of pecan shell of propenyl cellulose and 1000-1200 portions of dichloromethane are added for temperature control reaction, and then the sludge degradation agent is obtained after filtration and drying.
10. The method for co-disposal of printed sludge in a cement kiln according to claim 9, wherein: the reaction temperature in the S2 is 50-70 ℃ and the reaction time is 100-150min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007065A1 (en) * | 1995-08-16 | 1997-02-27 | Commonwealth Scientific And Industrial Research Organisation | Dewatering of sludges |
| CN106186746A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare clinker |
| CN111646671A (en) * | 2020-06-18 | 2020-09-11 | 浙江红狮环保股份有限公司 | Method for cooperatively treating sludge by using cement kiln |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007065A1 (en) * | 1995-08-16 | 1997-02-27 | Commonwealth Scientific And Industrial Research Organisation | Dewatering of sludges |
| CN106186746A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare clinker |
| CN111646671A (en) * | 2020-06-18 | 2020-09-11 | 浙江红狮环保股份有限公司 | Method for cooperatively treating sludge by using cement kiln |
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