CN101580346B - Method for cooperatively processing sludge in the cement production - Google Patents
Method for cooperatively processing sludge in the cement production Download PDFInfo
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- CN101580346B CN101580346B CN2009101001176A CN200910100117A CN101580346B CN 101580346 B CN101580346 B CN 101580346B CN 2009101001176 A CN2009101001176 A CN 2009101001176A CN 200910100117 A CN200910100117 A CN 200910100117A CN 101580346 B CN101580346 B CN 101580346B
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- cement
- sludge
- raw material
- cement clinker
- paper mill
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- 239000004568 cement Substances 0.000 title claims abstract description 85
- 239000010802 sludge Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002912 waste gas Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 17
- 238000001354 calcination Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 abstract description 6
- 239000004927 clay Substances 0.000 abstract description 5
- 235000019738 Limestone Nutrition 0.000 abstract description 3
- 239000006028 limestone Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000004575 stone Substances 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 231100000989 no adverse effect Toxicity 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000010348 incorporation Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 4
- 239000002956 ash Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- C04B7/428—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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses method for cooperatively processing sludge in the cement production, which comprises the following steps of: the existing novel drying method cement clinker production line is utilized for producing the cement clinker and cooperatively processing the sludge; the paper making sludge with the more than or equal to 70% of water content is directly added into a vertical grinder, blended with the cement raw material and milled to produce the cement raw material; the additive amount of the paper making sludge is 5%-12% of the cement raw material weight; after being homogenized, the cement raw material is led into an incineration system to be made into the cement clinker; the waste gas of a furnace in the incineration system is led into the vertical mill for being dried. In the method, the sludge and the cement stone enter into the vertical grinder without needing the working procedures such as ingredient in advance, blending and belt transport and the like; the advanced dehydration or drying on the sludge is not needed; the sludge with the high water content can be processed; the method has big treatment capacity, has no secondary pollution, can save the cement stone such as limestone, clay and the like, and has no adverse effect on the quality of the cement clinker.
Description
Technical field
The invention belongs to field of sludge treatment, relate in particular to a kind of in manufacture of cement the cooperatively processing sludge method.
Background technology
The composition of paper mill sludge is comparatively complicated, except that containing a large amount of moisture (general water ratio is up to more than 70%), also contains organism, heavy metal and the salt etc. of difficult degradation, and these mud will produce serious harm to environment if effectively do not dispose.
The treatment process of paper mill sludge mainly contains landfill, burning, brick-making process, and is used for generating etc.Wherein, landfill is simple relatively, reduced investment, and processing costs is low, but its appropriation of land, and can not finally avoid environmental pollution.Burning is a method for innocent treatment the most completely at present, but treatment facility is complicated, and energy consumption is high, and investment is big, and processing costs is many, and existence needs the problem of secondary treatment incineration residue again.The mud utilization of brickmaking is less.Though sludge power generation has utilized the thermal value in the mud, invest greatlyyer, less economical, also there is the cindery problem of secondary treatment.
In the method for disposal of various mud; The high-moisture percentage of mud is an a great problem; In existing various minimizing and the disposal of resources method; Need carry out processed in advance or special oven dry is handled to mud, be used further to cement ingredient after dropping to 40% below like mud through special dewatering unit to water ratio, this make mud complex disposal process, energy consumption height, treatment capacity is little, processing cost is high.
Application number be 200510100013.7 Chinese patent disclose a kind of when producing cement sludge treatment method again; But this method is mixed the high mud of heavy metal content with coal-fired; And it is thermal zone to utilize waste heat oven dry back in the manufacture of cement to spray into rotary kiln through Jet-combustion gun; Burning is 9～12 minutes under 1400～1600 ℃ high temperature, and ashes are processed cement products.And for the low mud of heavy metal content, then need to add the stable fertilizer product of processing of alkali through oven dry in addition.
Application number is that 200710045299.2 one Chinese patent application discloses a kind of cement clinker and working method thereof that adopts dewatered sludge ingredient to make; This method is directly prepared burden with dewatered sludge; And introduce kiln tail high-temp waste gas as the oven dry thermal source; But this method must be handled dehydration and airing that mud itself carries out in advance, makes moisture content drop to back below 40% and prepares burden with other raw material, gets into raw mill again; This method can not be directly add mud in the raw mill mill, is difficult to use for the mud of high-moisture percentage; What this method was directed against simultaneously is alum sludge, and the utilization of mud is low.
Therefore; Seek and a kind ofly can be in advance wet mud be carried out processed or special oven dry is handled, the moisture percentage in sewage sludge upper limit is not had special demands, and treatment capacity is big; Do not have the method for the harmlessness disposing and the recycling of any secondary pollution, will more and more be paid attention to by people.
Paper mill sludge mainly contains CaO, SiO
2, Al
2O
3, Fe
2O
3Etc. chemical ingredients, close with the composition of cement raw material.And new type nonaqueous cement production line is adopted in the production of cement clinker at present more, and it comprises that treatment capacity is big, has the Vertical Mill that the grinding function is held concurrently in oven dry, raw material homogenizing storehouse, and the calcination system of being made up of decomposing furnace, rotary kiln etc.When this new type nonaqueous cement production line is produced cement clinker, generally be with adding Vertical Mill mixing, levigate after the cement raw material pre-treatment, make cement slurry, cement slurry is fired into cement clinker in calcination system after raw material homogenizing storehouse homogenizing.If can paper mill sludge be used to prepare cement, possibly realize the harmlessness disposing and the recycling of paper mill sludge.
Summary of the invention
The invention provides a kind of in manufacture of cement the method for cooperatively processing sludge; Utilize existing new type nonaqueous cement clinker production line that mud is carried out harmlessness disposing and recycling; Employing directly adds the Vertical Mill that has the double grinding function of oven dry in the existing new type nonaqueous cement production line with paper mill sludge, prepares cement clinker, and this method can be handled the paper mill sludge of water ratio >=70% (weight percent); And treatment capacity is big, does not have any secondary pollution.
A kind of in manufacture of cement the cooperatively processing sludge method; Utilize existing new type nonaqueous cement clinker production line to produce cement clinker and cooperatively processing sludge; The paper mill sludge of water ratio >=70% is directly added Vertical Mill, mix with cement raw material, levigate, make cement slurry; The add-on of paper mill sludge is 5%～12% of a cement slurry weight, imports in the calcination system after the homogenizing and is fired into cement clinker; Kiln waste gas in the calcination system feeds Vertical Mill and carries out drying.
The add-on of the paper mill sludge of water ratio >=70% is controlled at 5%～12% (preferred 5%～10%) of cement slurry weight, can guarantees to produce and normally carry out, the cement clinker of preparation meets industry standard.
Described paper mill sludge dewaters and exceptionally also mainly contains CaO, SiO
2, Al
2O
3, Fe
2O
3Etc. chemical ingredients, volatile constituent content such as potassium, sodium, chlorine, sulphur are not high, but part replace lime stone and clay etc. prepare cement clinker as cement raw material, can not produce objectionable impurities.Also contain objectionable impuritiess such as a certain amount of heavy metal in addition, can and finally in the high-temperature calcination process, solidify in cement clinker by cement slurry absorption.
Described cement raw material is selected the general cement raw material in this area for use, and like Wingdale, clay etc., the consumption of each raw material can be adjusted according to actual needs or get final product according to traditional ratio interpolation.
The present invention has following beneficial effect:
(1) the present invention adopts the paper mill sludge that will wet directly to add Vertical Mill and in Vertical Mill, carry out the exsiccant method; Wet paper mill sludge need not to dewater in advance or is dry; Get into Vertical Mill with other cement raw material through the operation of preparing burden in advance, mixing and belt being carried again, but mud is directly added in the Vertical Mill through volume pump, transfer lime and diverting device, dry by kiln tail high-temp waste gas subsequently; Thereby the water ratio of mud do not required, can handle the paper mill sludge of water ratio >=70%.
(2) in the Vertical Mill of new type nonaqueous cement clinker production line, in order to improve the mobile and stable bed of material of material in the Vertical Mill, itself is provided with waterworks; The mud that will wet directly adds Vertical Mill; Not only the water ratio to mud does not require, but also can reduce the injection flow rate of Vertical Mill water spray system, kills two birds with one stone.
(3) paper mill sludge with water ratio >=70% directly adds the Vertical Mill in the double grinding system of oven dry, owing in Vertical Mill, introduced the waste heat of kiln tail gas, paper mill sludge not only need not to provide in addition heating source or drying plant can obtain drying in Vertical Mill.
(4) CaO that mainly contains in the paper mill sludge, SiO
2, Al
2O
3, Fe
2O
3But be used as cement raw material etc. chemical ingredients part replace lime stone, clay etc.; The organism that contain in the paper mill sludge etc. can be adsorbed by a large amount of cement slurries in cement production process, and final perfect combustion is decomposed; And the heavy metal in the paper mill sludge burns till certain promoter action to cement, in the cement clinker mineral forming process, has participated in the formation reaction of mineral, is attached in the grog lattice, has obtained effectively curing; Volatile constituent content such as the potassium in the paper mill sludge, sodium, chlorine, sulphur are not high, do not worry producing skinning and toxic gas in the cement production process, realized the harmlessness disposing and the recycling of paper mill sludge.
(5) because general new type nonaqueous cement clinker production line grog output is very big; Thereby the relative populations that paper mill sludge is disposed is also very big; As produce the production line of 5000 tons of grogs daily; Paper mill sludge incorporation by doing in the cement slurry is 3% (weight percent), is converted to moisture 70% about 10% (weight percent) of wet paper mill sludge incorporation, and wet paper mill sludge treatment capacity is just up to 40 tons/hour.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method.
Embodiment
Embodiment 1
As shown in Figure 1; On 5000 tons of new type nonaqueous cement clinker production line of daily output; Cement raw material is by Wingdale: sand shale: delivering into Vertical Mill by belt after copper ashes=82.5: 15: 2.5 (weight ratio) accurate measurement, is that 70% paper mill sludge directly adds Vertical Mill by volume pump through sludge sump with water ratio, per hour adds 20 tons of above-mentioned paper mill sludges (incorporation that is converted to wet paper mill sludge in the cement slurry is about 5%); Paper mill sludge utilizes the waste heat of rotary kiln waste gas dry in Vertical Mill; And mix with cement raw material, be finely ground to cement slurry together, send into calcination system after the homogenizing; Be fired into cement clinker, the rate value of cement clinker is: lime saturation ratio (KH)=0.920, silica modulus (n)=2.51, aluminium-oxygen modulus (P)=1.57.
Embodiment 2
As shown in Figure 1, on 5000 tons of new type nonaqueous cement clinker production line of daily output, by Wingdale: sand shale: deliver into Vertical Mill by belt after copper ashes=83.0: 14: 2.5 (weight ratio) accurate measurement; With water ratio is that 75% paper mill sludge directly adds Vertical Mill by volume pump through sludge sump; Per hour add 40 tons of sludge quantities (incorporation that is converted to wet paper mill sludge in the cement slurry is about 10%), paper mill sludge utilizes the waste heat of rotary kiln waste gas dry in Vertical Mill, and mixes with cement raw material; Be finely ground to cement slurry together; Send into calcination system after the homogenizing, be fired into cement clinker, the rate value of cement clinker is KH=0.913, n=2.58, P=1.50.
Embodiment 3
As shown in Figure 1, on 2500 tons of new type nonaqueous cement clinker production line, by Wingdale: clay: sand shale: copper ashes=83.4: 10: 5: deliver into Vertical Mill by belt after 2.6 (weight ratio) accurate measurement; With water ratio is that 80% paper mill sludge directly adds Vertical Mill by volume pump through sludge sump; Per hour add 20 tons of sludge quantities (incorporation that is converted to wet paper mill sludge in the cement slurry is about 10%), paper mill sludge utilizes the waste heat of rotary kiln waste gas dry in Vertical Mill, and mixes with cement raw material; Be finely ground to cement slurry together; Send into calcination system after the homogenizing, be fired into cement clinker, the rate value of cement clinker is KH=0.908, n=2.42, P=1.55.
Claims (2)
1. the method for a cooperatively processing sludge in manufacture of cement; Utilize existing dry-process cement clinker production line to produce cement clinker and cooperatively processing sludge; It is characterized in that: the paper mill sludge of water ratio >=70% is directly added Vertical Mill, mix with cement raw material, levigate, make cement slurry; The add-on of paper mill sludge is 5%～12% of a cement slurry weight, imports in the calcination system after the homogenizing and is fired into cement clinker; Kiln waste gas in the calcination system feeds Vertical Mill and carries out drying.
2. the method for claim 1, it is characterized in that: the add-on of described paper mill sludge is 5%～10% of a cement slurry weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101001176A CN101580346B (en) | 2009-06-29 | 2009-06-29 | Method for cooperatively processing sludge in the cement production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101001176A CN101580346B (en) | 2009-06-29 | 2009-06-29 | Method for cooperatively processing sludge in the cement production |
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| Publication Number | Publication Date |
|---|---|
| CN101580346A CN101580346A (en) | 2009-11-18 |
| CN101580346B true CN101580346B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101001176A Expired - Fee Related CN101580346B (en) | 2009-06-29 | 2009-06-29 | Method for cooperatively processing sludge in the cement production |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219342B (en) * | 2011-05-03 | 2013-05-08 | 大连东泰产业废弃物处理有限公司 | Hydrocarbons-containing organic sludge and cement kiln joint disposal pretreatment method |
| CN102718374A (en) * | 2012-05-31 | 2012-10-10 | 郭涵 | Method of utilizing vertical type cement kiln to process sludge |
| US20160145154A1 (en) * | 2013-07-25 | 2016-05-26 | Wuji Yin | Process for recycling aqueous sludge and/or waste |
| CN103396019A (en) * | 2013-07-25 | 2013-11-20 | 尹无忌 | Method for resource utilization of water-containing sludge |
| CN103896505B (en) * | 2014-03-25 | 2015-07-29 | 同济大学 | A kind of method of feeding mode regulation and control of cement kiln synergic processing lime mummification municipal sludge |
| CN105000815A (en) * | 2014-04-17 | 2015-10-28 | 宝山钢铁股份有限公司 | Method for synergistically treating heavy metal sludge in cement production |
| 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 |
| CN105967493A (en) * | 2016-07-11 | 2016-09-28 | 安徽锋亚环境技术有限公司 | 'One-stop' solution system and 'one-stop' solution method for tap water plant sludge treatment |
| CN109608067A (en) * | 2018-12-17 | 2019-04-12 | 重庆市渝溪产业（集团）有限公司 | Municipal sludge collaboration processing unit and treatment process based on JT kiln |
| CN110482886B (en) * | 2019-08-21 | 2021-10-01 | 湖州乌米科技有限公司 | Method for preparing high-strength cement by using papermaking waste |
| CN110818161B (en) * | 2019-11-18 | 2022-04-08 | 深圳市环保科技集团股份有限公司 | Treatment method and treatment system for nickel dissolving concentrated solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172790A (en) * | 2007-10-26 | 2008-05-07 | 尹小林 | Novel technique for producing concrete by using hygroscopic state sewage sludge waste slag B grade mixture material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172790A (en) * | 2007-10-26 | 2008-05-07 | 尹小林 | Novel technique for producing concrete by using hygroscopic state sewage sludge waste slag B grade mixture material |
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| CN101580346A (en) | 2009-11-18 |
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