CN204469408U - High-efficient multi-pipe spiral demist dust arrester - Google Patents

High-efficient multi-pipe spiral demist dust arrester Download PDF

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Publication number
CN204469408U
CN204469408U CN201520073469.8U CN201520073469U CN204469408U CN 204469408 U CN204469408 U CN 204469408U CN 201520073469 U CN201520073469 U CN 201520073469U CN 204469408 U CN204469408 U CN 204469408U
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Prior art keywords
demist
efficient
dust arrester
pipe spiral
helical
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CN201520073469.8U
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姜衍更
李蜀生
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Qingdao Daneng Environmental Protection Equipment Inc Co
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Qingdao Daneng Environmental Protection Equipment Inc Co
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Abstract

A kind of high-efficient multi-pipe spiral demist dust arrester, comprise shell body, several fixed supports of shell body inside are arranged at short transverse interval, be distributed in shell body inside and the vertical demist dedusting assembly be made up of several tubular helical demist dedusters be arranged between two fixed supports, be arranged on the rinse-system on fixed support.The utility model high-efficient multi-pipe spiral demist dust arrester, demist efficiency of dust collection is high, ultra-clean discharge.Can be widely used in the gas cleaning process of coal burning boiler of power station wet method fume desulfurizing system.

Description

High-efficient multi-pipe spiral demist dust arrester
Technical field
The present invention relates to a kind of high-efficient multi-pipe spiral demist dust arrester, can be widely used in the gas cleaning process of coal burning boiler of power station wet method fume desulfurizing system.
Background technology
Demist deduster is the key equipment in wet method fume desulfurizing system, flue gas after desulfuration absorbing tower process carries a large amount of slurry drop, these drops include solid content or DDGS, they mainly absorb the flue dust of the product after SO2, superfluous desulfurizing agent and collection at large, if do not removed, these drops by depositing, block, fouling and secondary pollution, gypsum rain, the series of problems such as follow-up equipment corrosion.The function of demist deduster is exactly remove these drops as far as possible, carries out gas-water separation to the flue gas after desulfurization, and the performance of demist deduster not only affects the safe and reliable operation of desulphurization system, and directly affects discharge index.
Summary of the invention
At present, existing demist deduster is generally deflection plate demist deduster, and deflection plate demist deduster has flat, ridge type, the multiple arrangement such as combined, and in its outlet droplet content flushing cycle, average guarantee value is 75mg/Nm 3pressure drop is generally less than 200Pa, ridge type demist deduster critical separation particles 20 ~ 30 μm, in actual moving process, owing to affecting by factors such as flue gas flow rate, slurries dust content, blade construction, blade pitgh and demist deduster layouts, do not take the gas cleaning treatment measures such as wet cottrell as follow-up, be difficult to ensure thermal power plant smoke dust discharge concentration≤20mg/Nm 3basic demand, even if but follow-up increase wet static dedusting technology will realize≤5mg/Nm 3the index of ultra-clean discharge is also very difficult.
The object of the present invention is to provide the high-efficient multi-pipe spiral demist dust arrester of high, the ultra-clean discharge of a kind of demist efficiency of dust collection.
In order to achieve the above object, high-efficient multi-pipe spiral demist dust arrester of the present invention, comprise shell body, several fixed supports of shell body inside are arranged at short transverse interval, be distributed in shell body inside and the vertical demist dedusting assembly be made up of several tubular helical demist dedusters be arranged between two fixed supports, be arranged on the rinse-system on fixed support.
High-efficient multi-pipe spiral demist dust arrester of the present invention, several tubular helical demist dedusters said, each tubular helical demist deduster comprises the outer cylinder be arranged on fixed support, helical axis, is positioned at outer cylinder and is arranged on the helical blade on helical axis.
High-efficient multi-pipe spiral demist dust arrester of the present invention, described helical blade, is provided with several radial holes.
High-efficient multi-pipe spiral demist dust arrester of the present invention, said helical blade, can adopt single head structure, also can adopt bull structure.
High-efficient multi-pipe spiral demist dust arrester of the present invention, said demist dedusting assembly, according to fume emission and resistance, enclosure interior can be arranged by individual layer outside, also can multilayer arrange.
High-efficient multi-pipe spiral demist dust arrester of the present invention, all arranges rinse-system at every layer of demist dedusting assembly upper-lower position.Flushing water pressure, the water yield and the flushing frequency set according to actual operating mode.
High-efficient multi-pipe spiral demist dust arrester of the present invention, its operation principle is: the flue gas containing desulfurization slurry and dust enters from demist dedusting assembly bottom, due to the guide functions of helical blade, flue gas constantly changes flow direction in flow at high speed process, helically rise, slurries in flue gas clash into mutually probability and obviously increase, be conducive to coalescence and become coarsegrain slurries, the bulky grain slurries formed get rid of outside cylinder inner wall by centrifugal action, outer cylinder moisture film is formed at inwall, act on helical blade surface by inertia force simultaneously and also form moisture film, moisture film absorbs dust in the slurries constantly clashed into again further, slurry pool is flowed into along inwall and conveyor screw surface, helical blade is along the circumferential direction provided with radial hole, these holes form moisture film, flue gas is in uphill process, part dust and slurries will certainly impact moisture film hole, and stopped in moisture film hole, absorb, then next moisture film is formed, go round and begin again, complete efficient demist dedusting function.In addition, the radial hole that the blade of helical blade is arranged, produces turbulent flow by the axial flow of this some holes and spiral air flow, is suitable for the coalescence promoting the fine particulates such as drop, dust, is also conducive to improving dedusting demisting efficiency.
High-efficient multi-pipe spiral demist dust arrester of the present invention, increase the collision probability of dust, make fine dust coalescence, be conducive to removing the fine dust in flue gas, can slurry drops entrained by efficient removal flue gas and aerosol particle thing, the aerosol particle things such as the ammonium sulfate that efficient removal is formed because of the escaping of ammonia, and the heavy metal Hg can effectively removed in flue gas and mercury oxide, demist efficiency of dust collection is high, realizes the ultra-clean discharge of flue gas.
In sum, high-efficient multi-pipe spiral demist dust arrester of the present invention, demist efficiency of dust collection is high, ultra-clean discharge.
Accompanying drawing illustrates and is further described the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view in Fig. 1.
Detailed description of the invention in FIG, in Fig. 1, Fig. 2, high-efficient multi-pipe spiral demist dust arrester of the present invention, comprise shell body 1, several fixed supports 2 of shell body inside are arranged at short transverse interval, be distributed in shell body inside and the vertical demist dedusting assembly 3 be made up of several tubular helical demist dedusters be arranged between two fixed supports, be arranged on the rinse-system 4 on fixed support.
High-efficient multi-pipe spiral demist dust arrester of the present invention, several tubular helical demist dedusters said, each tubular helical demist deduster comprises the outer cylinder 5 be arranged on fixed support, helical axis 6, is positioned at outer cylinder and is arranged on the helical blade 7 on helical axis.
High-efficient multi-pipe spiral demist dust arrester of the present invention, described helical blade, is provided with several radial holes a.
High-efficient multi-pipe spiral demist dust arrester of the present invention, said helical blade, can adopt single head structure, also can adopt bull structure.
High-efficient multi-pipe spiral demist dust arrester of the present invention, said demist dedusting assembly, according to fume emission and resistance, enclosure interior can be arranged by individual layer outside, also can multilayer arrange.
High-efficient multi-pipe spiral demist dust arrester of the present invention, all arranges rinse-system at every layer of demist dedusting assembly upper-lower position.
In addition, in figure, enter fume side b, go out fume side c.

Claims (8)

1. a high-efficient multi-pipe spiral demist dust arrester, it is characterized in that, comprise shell body, several fixed supports of shell body inside are arranged at short transverse interval, be distributed in shell body inside and the vertical demist dedusting assembly be made up of several tubular helical demist dedusters be arranged between two fixed supports, be arranged on the rinse-system on fixed support.
2. high-efficient multi-pipe spiral demist dust arrester according to claim 1, it is characterized in that, several tubular helical demist dedusters said, each tubular helical demist deduster comprises the outer cylinder be arranged on fixed support, helical axis, is positioned at outer cylinder and is arranged on the helical blade on helical axis.
3. high-efficient multi-pipe spiral demist dust arrester according to claim 2, is characterized in that described helical blade is provided with several radial holes.
4. high-efficient multi-pipe spiral demist dust arrester according to claim 2, is characterized in that said helical blade can adopt single head structure.
5. high-efficient multi-pipe spiral demist dust arrester according to claim 2, is characterized in that said helical blade also can adopt bull structure.
6. high-efficient multi-pipe spiral demist dust arrester according to claim 1, is characterized in that, said demist dedusting assembly, and enclosure interior can be arranged by individual layer outside.
7. high-efficient multi-pipe spiral demist dust arrester according to claim 1, is characterized in that, said demist dedusting assembly, and enclosure interior also can multilayer be arranged outside.
8. the high-efficient multi-pipe spiral demist dust arrester according to claim 6 or 7, is characterized in that, all arranges rinse-system at every layer of demist dedusting assembly upper-lower position.
CN201520073469.8U 2015-02-03 2015-02-03 High-efficient multi-pipe spiral demist dust arrester Active CN204469408U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201520073469.8U CN204469408U (en) 2015-02-03 2015-02-03 High-efficient multi-pipe spiral demist dust arrester

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104587756A (en) * 2015-02-03 2015-05-06 青岛达能环保设备股份有限公司 Efficient multi-pipe spiral mist removing and dust removing system
CN106345185A (en) * 2016-08-25 2017-01-25 山东应天节能环保科技有限公司 inverted-pyramid-shaped tube bundle demister

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104587756A (en) * 2015-02-03 2015-05-06 青岛达能环保设备股份有限公司 Efficient multi-pipe spiral mist removing and dust removing system
CN106345185A (en) * 2016-08-25 2017-01-25 山东应天节能环保科技有限公司 inverted-pyramid-shaped tube bundle demister

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