CN205391952U - High -efficient dust removal defogging device of HCPM condensing - Google Patents
High -efficient dust removal defogging device of HCPM condensing Download PDFInfo
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- CN205391952U CN205391952U CN201620149742.5U CN201620149742U CN205391952U CN 205391952 U CN205391952 U CN 205391952U CN 201620149742 U CN201620149742 U CN 201620149742U CN 205391952 U CN205391952 U CN 205391952U
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- defroster
- demister
- hcpm
- dust
- flue gas
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Abstract
The utility model relates to a high -efficient dust removal defogging device of HCPM condensing. The device including the tower body, sets gradually one -level defroster, second grade defroster, trumpet cooler, the superfine atomizing system of secondary condensation, tertiary defroster in the tower body. Wherein, the defroster is superfine house rigde defroster or flat defroster, and the superfine atomizing system of secondary condensation includes pipe -line system, compress air system, two fluid tip. Because the reasonable setting of one -level defroster, second grade defroster, trumpet cooler, the superfine atomizing system of secondary condensation, tertiary defroster makes its system not influenced by the unit load, to avoid the defroster to block up and caused the condition about exceeding standard of discharging, possible the setting under the WESP wet -type electrostatic precipitator state moreover reaches high requirement the that the ultra -clean discharged: the PM dust: entry concentration does: 20 during mgNm3, export concentration < 5 mgNm3.
Description
(1) technical field
This utility model relates to Wet Flue Gas Desulfurization Technology, is specifically related to a kind of HCPM condensing type highly effective dedusting demister.
(2) background technology
In China, the coal of more than 80% is all the energy being converted into other forms in the way of directly burning, and sulfur dioxide produced by coal combustion is the main source of atmospheric pollution.Flue gas desulfurization (fluegasdesulfurization, FGD) is the major measure controlling sulfur dioxide pollution.At present, domestic widely used wet desulfurization of flue gas by limestone-gypsum method technology.
In Limestone-gypsum Wet Flue Gas Desulfurization Process system, absorption tower adopts spray column technology in a large number, the SO in desulfurization washing process, in flue gas2Removal efficiency is up to more than 99%, but SO3Only eliminate about 50%.Remaining SO3Discharge with flue gas in the form of an aerosol.
The mechanical type demister that absorption tower is installed can only remove big drop water smoke, mainly for the big drop more than 20 μm and granule, it is impossible to removes fine water smoke, flue dust, heavy metal and particulate etc..Running middle outlet droplet concentration is typically in 100mg/Nm3Left and right；Containing substantial amounts of Gypsum Fibrosum microlayer model in flue gas, when not setting GGH, saturated wet flue gas can produce significant white plume around chimney and certain condensed water descends slowly and lightly, and forms so-called " gypsum rain " phenomenon.Simultaneously no matter with or without GGH, due to a large amount of SO3Existence, enter chimney wet flue gas be in below acid dew point, its condensed fluid exacerbates the corrosion of chimney.
The Crack cause of " gypsum rain " phenomenon is mainly: the demister outlet droplet concentration allowed in domestic desulphurization system design specification is 75mg/Nm3, corresponding maximum droplet size is 20 μm, and actual a variety of causes also tends to when running be higher than design load.When not installing GGH or winter, the flue-gas temperature that chimney is discharged is relatively low, and the drop that the moisture content of flue gas is bigger with granule condenses rapidly, drips near chimney.(abroad because the absorption tower outlet demister designing requirement of wet type desulfurizing is higher, the concentration of liquid drops entrained by demister outlet only has 20mg/Nm3Even if not installing GGH, the flue gas that chimney is discharged there will not be Gypsum Fibrosum drop and takes out of).
Therefore, high efficiency demister is the key equipment of wet FGD, for the drop that separating flue after absorption tower is washed carries.In a sense, the quality of demister operating condition be wet FGD system can safety, economy, stable operation key.The removal of particulate matter is based on inertial collision theory by high efficiency demister, and its cut diameter is 10 microns, and when granule (dust or Gypsum Fibrosum droplet) diameter is lower than 10 microns, the removal efficiency of demister is low-down.Easily cause the fouling of demister body blade.When fouling is serious, blocking and the structure collapses of demister can be formed, the paralysis of FGD system entirety occurs.If equipment is poor except fog effect, flue gas is directly discharged into smoke stack emission after flowing through demister, and owing to its exhaust gas temperature is relatively low, flue gas diffusivity is more weak, will result directly in the gypsum slurries drop that flue gas carries to land near chimney, thus causing " gypsum rain " phenomenon.
Wet electrical dust precipitator (WESP) is a kind of for processing the new cleaner containing trace dust and microparticle, it is mainly used to remove containing harmful substances such as the dirt in humid gas, acid mist, water droplet, aerosol, stink, PM2.5, is the ideal equipment administering atmospheric dust pollution.Adopting liquid to wash away dust collecting electrode surface to carry out deashing, equipment investment expense is too high, and need to support the use with other cleaner, has virtually increased the weight of the cost of investment of producer.
The problems referred to above all need innovation to improve.
(3) utility model content
This utility model is in order to make up the deficiencies in the prior art, provide a kind of HCPM condensing type highly effective dedusting demister, this device is not affected by unit load, and demister will not block and cause discharge to exceed standard, be not provided with under WESP wet electrical dust precipitator state meet reach ultra-clean emission request: PM dust: entrance concentration is: 20mg/Nm3Time；Exit concentration < 5mg/Nm3。
This utility model is achieved by the following technical solution:
A kind of HCPM condensing type highly effective dedusting demister, including tower body, it is characterized in that in tower body to set gradually one-level demister from bottom to up, two grades of demisters, trumpet cooler, time condensation super-fine atomization system, three grades of demisters, wherein, demister is ultra-fine ridge type demister or Flat defroster, the cool condenser of tubular type includes circulation line, the outer tube wall welding fin of circulation line, time condensation super-fine atomization system includes pipe-line system, compressed air system, two-fluid spray nozzle, the compressed air system pressure air of cooling water in pipe-line system, two-fluid spray nozzle injection forms fine and close atomizing spray district.
Pipe-line system is double phase stainless steel alloy pipe-line system.
Flue gas enters one-level demister through serum recycle spray system.
Particle dust and Gypsum Fibrosum droplet are amplified to more than 40 microns by condensing and be atomized coalescence mode by the ultimate principle of HCPM condensing type highly effective dedusting demister, then passing through fine ridge type (flat) demister it efficiently to be removed, concrete technology flow process is as follows:
Flue gas is introduced into one-level ridge type (flat) demister after serum recycle sprays, and removes bulky grain (40-1500 micron) Gypsum Fibrosum droplet.
Flue gas enters two grades of ridge type (flat) demisters subsequently, removes 22-40 micron Gypsum Fibrosum droplet.
Flue gas enters trumpet cooler, trumpet cooler surface sweating forms moisture film, saturated flue gas first time condensation simultaneously, steam in flue gas condenses with dust for the nuclei of condensation, after dust surface sweating, its surface wettability is significantly increased, and the wellability on dust surface is to determine the key factor that inertial collision removes dust efficiency, is removed when part condensation dust and condensation tube wall moisture film collision, part condensation dust and droplet coalescence and particle diameter increases, this outer portion Gypsum Fibrosum droplet is also removed.
Flue gas subsequently enters time condensation super-fine atomization spray region, time condensation super-fine atomization system is made up of alloy pipe-line system, compressed air system, two-fluid spray nozzle etc., cooling water forms the atomizing spray district of densification through pressure air injection, atomizing particle size 40-60 microns, saturated flue gas carries out time condensation, steam in flue gas is with dust for nuclei of condensation time condensation, and surface sweating dust becomes bulky grain with cold water droplet coalescence, and residual gypsum droplet all with cold water droplet coalescence.
Flue gas enters three grades of ultra-fine ridge type (flat) demisters, this demister blade is particular design, flushing free, formed in blade bottom when flue gas flows through and hold liquid layer, the effectively dust granules in washing flue gas and Gypsum Fibrosum droplet, the dust of cold water droplet, coalescence amplification, the Gypsum Fibrosum droplet of coalescence are efficiently removed；
Such scheme can make dust emission concentration less than 5mg/Nm when working in coordination with hollow-spraying-tower3, final Gypsum Fibrosum droplet clearance is up to 100%.
Systematic parameter (single unit):
1) atomized water
Atomized water consumption (single unit) :-0.8t/h
Compression air consumption (single unit): 2.5m3/min
2) resistance
Coalescence SR (containing tubular type condensation and atomization coalescence): 10pa
One-level, two grades of fine demister SR: 75pa
Three grades of fine demister SR: 75pa.
The beneficial effects of the utility model are: this utility model device is arranged due to one-level demister, two grades of demisters, trumpet cooler, time condensation super-fine atomization system, the reasonable of three grades of demisters, its system is made not affected by unit load, the situation avoiding demister blocking and cause discharge to exceed standard, and can accomplish, under being not provided with WESP wet electrical dust precipitator state, to reach the high request of ultra-clean discharge: PM dust: entrance concentration is: 20mg/Nm3Time；Exit concentration < 5mg/Nm3。
(4) accompanying drawing explanation
Fig. 1: the structural representation of this utility model box body；
In figure, 1 one-level demister, 2 two grades of demisters, the 3 cool condensers of tubular type, 4 time condensation super-fine atomization systems, 5 three grades of demisters.
(5) detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail with implementing example.This embodiment includes tower body, sets gradually 1, two grades of demisters 2 of one-level demister, trumpet cooler 3,4, three grades of demisters 5 of time condensation super-fine atomization system in tower body from bottom to up.Wherein: demister 1,2,5 is ultra-fine ridge type demister or Flat defroster；The cool condenser 3 of tubular type is welded fin by circulation line and outer tube wall and forms；Time condensation super-fine atomization system 4 includes pipe-line system, compressed air system, two-fluid spray nozzle, and the cooling compressed air system pressure air of water, two-fluid spray nozzle injection in pipe-line system form fine and close atomizing spray district.
Pipe-line system is double phase stainless steel alloy pipe-line system.
Flue gas enters one-level demister 1 through serum recycle spray system.
Particle dust and Gypsum Fibrosum droplet are amplified to more than 40 microns by condensing and be atomized coalescence mode by the ultimate principle of HCPM condensing type highly effective dedusting demister, then passing through fine ridge type (flat) demister it efficiently to be removed, concrete technology flow process is as follows:
Flue gas is introduced into one-level ridge type (flat) demister after serum recycle sprays, and removes bulky grain (40-1500 micron) Gypsum Fibrosum droplet.
Flue gas enters two grades of ridge type (flat) demisters, removes 22-40 micron Gypsum Fibrosum droplet；
Flue gas enters trumpet cooler 3, trumpet cooler 3 surface sweating forms moisture film, saturated flue gas first time condensation simultaneously, steam in flue gas condenses with dust for the nuclei of condensation, after dust surface sweating, its surface wettability is significantly increased, and the wellability on dust surface is to determine the key factor that inertial collision removes dust efficiency, is removed when part condensation dust and condensation tube wall moisture film collision, part condensation dust and droplet coalescence and particle diameter increases, this outer portion Gypsum Fibrosum droplet is also removed.
Flue gas subsequently enters time condensation super-fine atomization spray region, time condensation super-fine atomization system 4 is made up of alloy pipe-line system, compressed air system, two-fluid spray nozzle etc., cooling water forms the atomizing spray district of densification through pressure air injection, atomizing particle size 40-60 microns, saturated flue gas carries out time condensation, steam in flue gas is with dust for nuclei of condensation time condensation, and surface sweating dust becomes bulky grain with cold water droplet coalescence, and residual gypsum droplet all with cold water droplet coalescence.
Flue gas enters three grades of ultra-fine ridge type (flat) demisters, this demister blade is particular design, flushing free, formed in blade bottom when flue gas flows through and hold liquid layer, the effectively dust granules in washing flue gas and Gypsum Fibrosum droplet, the dust of cold water droplet, coalescence amplification, the Gypsum Fibrosum droplet of coalescence are efficiently removed.
Claims (2)
1. a HCPM condensing type highly effective dedusting demister, including tower body, it is characterized in that: in tower body, set gradually one-level demister (1) from bottom to up, two grades of demisters (2), trumpet cooler (3), time condensation super-fine atomization system (4), three grades of demisters (5), wherein, high efficiency demister (1, 2, 5) for ultra-fine ridge type demister or Flat defroster, the cool condenser of tubular type (3) includes circulation line, the outer tube wall welding fin of circulation line, time condensation super-fine atomization system (4) includes pipe-line system, compressed air system, two-fluid spray nozzle, the compressed air system pressure air of cooling water in pipe-line system, two-fluid spray nozzle injection forms fine and close atomizing spray district.
2. HCPM condensing type highly effective dedusting demister according to claim 1, it is characterised in that: pipe-line system is double phase stainless steel alloy pipe-line system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149742.5U CN205391952U (en) | 2016-02-29 | 2016-02-29 | High -efficient dust removal defogging device of HCPM condensing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620149742.5U CN205391952U (en) | 2016-02-29 | 2016-02-29 | High -efficient dust removal defogging device of HCPM condensing |
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| CN205391952U true CN205391952U (en) | 2016-07-27 |
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| CN201620149742.5U Expired - Fee Related CN205391952U (en) | 2016-02-29 | 2016-02-29 | High -efficient dust removal defogging device of HCPM condensing |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310911A (en) * | 2016-08-22 | 2017-01-11 | 山东国舜建设集团有限公司 | Combined type deep purification device for desulfurized wet flue gas |
| CN106422617A (en) * | 2016-08-24 | 2017-02-22 | 天海能源科技有限公司 | Highly-efficient desulfurizing and dedusting integrated absorption tower and desulfurizing and dedusting method |
| CN106422737A (en) * | 2016-08-31 | 2017-02-22 | 浙江德创环保科技股份有限公司 | Spray condensing and dust removing device for desulfurization tower |
| CN106955558A (en) * | 2017-05-16 | 2017-07-18 | 福建龙净环保股份有限公司 | A kind of condensing duster |
| CN107485881A (en) * | 2017-09-28 | 2017-12-19 | 清华大学 | High-humidity gas fume purifier |
| CN108014578A (en) * | 2018-01-05 | 2018-05-11 | 山东大学 | The method and device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
| CN108201706A (en) * | 2018-03-14 | 2018-06-26 | 重庆东钛化工有限公司 | The heat-engine plant desulfurized tower water cooling coagulating type demister circulatory system |
| CN110141928A (en) * | 2019-05-15 | 2019-08-20 | 杭州蕴泽环境科技有限公司 | A kind of device and method of low cost ship wet desulphurization tail gas preparing fresh |
| CN111632435A (en) * | 2020-06-13 | 2020-09-08 | 江苏启景环保技术有限公司 | Method for purifying waste gas containing liquid hazardous chemicals |
-
2016
- 2016-02-29 CN CN201620149742.5U patent/CN205391952U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310911A (en) * | 2016-08-22 | 2017-01-11 | 山东国舜建设集团有限公司 | Combined type deep purification device for desulfurized wet flue gas |
| CN106422617A (en) * | 2016-08-24 | 2017-02-22 | 天海能源科技有限公司 | Highly-efficient desulfurizing and dedusting integrated absorption tower and desulfurizing and dedusting method |
| CN106422737A (en) * | 2016-08-31 | 2017-02-22 | 浙江德创环保科技股份有限公司 | Spray condensing and dust removing device for desulfurization tower |
| CN106955558A (en) * | 2017-05-16 | 2017-07-18 | 福建龙净环保股份有限公司 | A kind of condensing duster |
| CN106955558B (en) * | 2017-05-16 | 2024-05-28 | 福建龙净环保股份有限公司 | Condensing dust remover |
| CN107485881A (en) * | 2017-09-28 | 2017-12-19 | 清华大学 | High-humidity gas fume purifier |
| CN108014578A (en) * | 2018-01-05 | 2018-05-11 | 山东大学 | The method and device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
| CN108014578B (en) * | 2018-01-05 | 2023-06-09 | 山东大学 | Method and device for purifying fine particles and condensable particles in coal-fired flue gas by using low Wen Penlin |
| CN108201706A (en) * | 2018-03-14 | 2018-06-26 | 重庆东钛化工有限公司 | The heat-engine plant desulfurized tower water cooling coagulating type demister circulatory system |
| CN110141928A (en) * | 2019-05-15 | 2019-08-20 | 杭州蕴泽环境科技有限公司 | A kind of device and method of low cost ship wet desulphurization tail gas preparing fresh |
| CN111632435A (en) * | 2020-06-13 | 2020-09-08 | 江苏启景环保技术有限公司 | Method for purifying waste gas containing liquid hazardous chemicals |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210508 Address after: 1-1902, building 1, No.88, West Convention and Exhibition Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Zhonghuan Engineering Design Consulting Co.,Ltd. Address before: No.141 Dikou Road, Jinan City, Shandong Province Patentee before: Niu Xinwei |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |