CN203899442U - Efficient desulfurizing, dedusting and demisting device adopting multi-stage reducing and multi-stage spraying - Google Patents

Efficient desulfurizing, dedusting and demisting device adopting multi-stage reducing and multi-stage spraying Download PDF

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Publication number
CN203899442U
CN203899442U CN201420083186.7U CN201420083186U CN203899442U CN 203899442 U CN203899442 U CN 203899442U CN 201420083186 U CN201420083186 U CN 201420083186U CN 203899442 U CN203899442 U CN 203899442U
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China
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section
dedusting
stage
diameter
desulfurization
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Expired - Fee Related
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CN201420083186.7U
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Chinese (zh)
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刘盛余
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Chengdu University of Information Technology
Chengdu Information Technology Co Ltd of CAS
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Chengdu Information Technology Co Ltd of CAS
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Abstract

The utility model relates to an efficient desulfurizing, dedusting and demisting device, in particular to an efficient desulfurizing, dedusting and demisting device adopting multi-stage reducing and multi-stage spraying. The efficient desulfurizing, dedusting and demisting device is characterized by comprising four sections of A,B C and D, wherein the section A adopts a circulating slurry storage, oxidization and crystallization section with the diameter of d1 and is located at the bottommost end of the desulfurizing, dedusting and demisting device; the section B adopts a desulfurizing and dedusting section and is connected onto the section A, the diameter of the section B is d2, and the quotient by dividing d2 by d1 is in the range of 0.8-0.9; the section C adopts a dedusting and desulfurizing section and is connected onto the section B, the diameter of the section C is d3, and the quotient by dividing d3 by d2 is in the range of 0.8-0.9; the section D adopts a demisting section and is connected onto the section C, the diameter of the section D is d4, and the quotient by dividing d4 by d3 is in the range of 0.7-0.9; a slurry circulating pump 6, an oxidization fan 3, a slurry stirring device 2 and a slurry crystal output pump 5 are mounted in the section A; two stages of spraying devices 7 and spraying devices 8 are mounted in the section B and the section C respectively; and a demister 9 is mounted in the section D.

Description

A kind of high-efficiency desulfurization of multi-stage reducing multi-stage spray, dedusting, demister
Technical field
The present utility model relates to a kind of high-efficiency desulfurization, dedusting, demister, especially adopts high-efficiency desulfurization, dedusting, the demister of a kind of multi-stage reducing multi-stage spray that lime stone, lime and ammonia (comprising liquefied ammonia or ammoniacal liquor) or carbide slag are raw material.
Background technology
When containing sulfur minerals and fuel combustion, in the flue gas of discharge, contain SO 2.Exemplary is boiler smoke and coloured and sintering device flue gas ferrous metal smelting taking coal and oil (being generally heavy oil) as fuel.Smoke-gas wet desulfurization is one of desulfur technology of large-scale commercial application.The advantage of wet process of FGD is that desulfuration efficiency is high, generally can reach more than 95%, and flue gas treating capacity is large, good to the adaptability of coal, is the technique that current flue gas desulfurization generally adopts.In wet fuel gas desulfurizing technology, absorption tower is a core component, and whether a Wet Process of FGD Project is successful, and key sees that whether absorption tower design is rationally reliable.In desulfurization project, running resistance is little, and Operation and maintenance are convenient, low cost of manufacture is crucial.Traditional spray absorber spray liquid-gas ratio is high, and slurry circulating pump energy consumption is high; For improving desulfurization degree, flue gas flow rate is low simultaneously, and PM10 dust dust collection capacity is poor, and demist weak effect also can increase the weight of air-introduced machine and be stained with soil, causes air-introduced machine vibration aggravation and seriously corroded, shortens the air-introduced machine life-span.Adsorption tower smoke Flow Field Distribution and flow velocity are unreasonable in addition, can not reach good desulfurization, and dedusting, except fog effect.
Utility model content
The purpose of this utility model is desulfurization, dedusting, the not high-technology problem of demist efficiency in order to solve existing desulfurizing tower, has designed a kind of high-efficiency desulfurization, dedusting, demister of multi-stage reducing multi-stage spray.This device distributes by flue gas flow rate, air-flow in multi-stage reducing adjusting tower and multi-stage spray reaches high desulfurization rate, high dust removal efficiency, high demist rate.
Technical solutions of the utility model are as follows:
The high-efficiency desulfurization of multi-stage reducing multi-stage spray, dedusting, a demister, is characterized in that: by the cylinder of level Four reducing, and level Four spray equipment, demister, slurry circulating pump, oxidation fan, slurry agitating device, slurries crystalline solid rear pump composition.
Described level Four reducing cylinder is the main body of desulfurization, dedusting, demister, is by A, B, and C, tetra-sections of compositions of D, wherein A section is that loop slurry stores, oxidation and crystallized region, diameter is d 1; B section is desulfurization and dedusting section, and this section of diameter is d 2, wherein d 2/ d 1=0.8-0.9; C section is dust-removal and desulfurizing section, and this section of diameter is d 3, wherein d 3/ d 2=0.8-0.9; D section is demist section, and this section of diameter is d 4, wherein d 4/ d 3=0.7-0.9.
Described level Four spray equipment, is arranged on respectively B section and the C section of desulfurization, dedusting, demister main body cylinder, respectively fills 2 grades, realizes dust-removal and desulfurizing.
Described demister, can adopt silk screen, fiber, and corrugated plating is arranged on the D section of desulfurization, dedusting, demister main body cylinder as demister.
Described slurry circulating pump, oxidation fan, slurry agitating device, slurries crystalline solid rear pump is installed in the A section of desulfurization, dedusting, demister main body cylinder.
The utility model operation principle is boiler or other kiln coal combustions dust-laden of discharging, containing SO 2when flue gas enters desulfurizer, first enter B section, because B section diameter is larger, flue gas flow rate is low, and the time of staying is long, and therefore desulfurization degree is high, and big dust particle can be removed in B section simultaneously, therefore the main desulfurization of B section and dust more than removal PM10; Then enter C section, because the diameter of C section is little compared with B section diameter, carry out reducing, therefore the flue gas flow rate of C section is high, and spray-absorption liquid is by high speed atomization, and granule dust is washed and removes, simultaneously because gas liquid ratio surface area is large, desulfurization degree is improved, and therefore C section is mainly dedusting and small part desulfurization, removes the dust of PM2.5-PM10; Enter successively D section, the diameter of D section dwindles again again, and flue gas flow rate improves again, greatly improves the arresting efficiency of demister, improves demist ability, and the absorption liquid after desulfurization enters A section and completes oxidation, crystallization.Desulfurizing tower of the present utility model has high-efficiency desulfurization, dedusting, demist, and it is high to have desulfuration efficiency, and absorbent utilization rate is high, energy-conservation, takes up an area little advantage.
Brief description of the drawings
Fig. 1 is a kind of high-efficiency desulfurization, dedusting, demister structural representation of multi-stage reducing multi-stage spray
In Fig. 1,1. smoke inlet, 2. slurry agitating device, 3. oxidation fan, 4. baffle plate, 5. slurries crystalline solid rear pump, 6. absorb slurry circulating pump, 7.2 grades of spray equipments, 8. spray equipments, 9. demister, 10. exhanst gas outlet, A. loop slurry stores, oxidation and crystallized region, B. desulfurization and dedusting section, C. dust-removal and desulfurizing section, D. demist section.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, the detailed description of the invention of high-efficiency desulfurization to a kind of multi-stage reducing multi-stage spray of the utility model, dedusting, demister is elaborated.
Embodiment 1: with reference to accompanying drawing 1, a kind of high-efficiency desulfurization of multi-stage reducing multi-stage spray, dedusting, demister, it is characterized in that: the main equipment level Four reducing cylinder of building desulfurization, dedusting, demister in infrastructure, A, B, C, D tetra-cylindrical section bodies, wherein A section is that loop slurry stores, oxidation and crystallized region, and diameter is d 1; B section is desulfurization and dedusting section, main desulfurization and dust more than removal PM10, and this section of diameter is d 2, wherein d 2/ d 1=0.85; C section is dust-removal and desulfurizing section, is mainly dedusting and small part desulfurization, removes the dust of PM2.5-PM10, and this section of diameter is d 3, wherein d 3/ d 2=0.8; D section is demist section, the water of mainly going out in flue gas, and this section of diameter is d 4, wherein d 4/ d 3=0.7.In B section, two-stage spray equipment 7 is set, in C section, two-stage spray equipment 8 is set simultaneously; Demister 9 adopts mesh mist eliminator, fills four layers, is arranged on D section; Slurry circulating pump, oxidation fan, slurry agitating device, slurries crystalline solid rear pump is installed in A section, adopts countercurrent spray to absorb.Adopting this device smoke treatment amount is 15000m 3/ h, SO 2entrance concentration is 1000ppm, and dust inlet concentration is 400mg/m 3coal-fired flue-gas, adopt counter-current absorption SO 2clearance 98.5%, dust clearance 97.6%, demist rate 98.6%.

Claims (1)

1. the high-efficiency desulfurization of a multi-stage reducing multi-stage spray, dedusting, demister, it is characterized in that: a kind of high-efficiency desulfurization of multi-stage reducing multi-stage spray, dedusting, demister are by (A), (B), (C), (D) four sections of compositions, wherein (A) section, for loop slurry stores, is oxidized and crystallized region, and diameter is d 1, at this desulfurization, dedusting, demister bottom; (B) section is desulfurization and dedusting section, is connected in (A) section, and this section of diameter is d 2, wherein d 2/ d 1=0.8-0.9; (C) section is dust-removal and desulfurizing section, is connected in (B) section, and this section of diameter is d 3, wherein d 3/ d 2=0.8-0.9; (D) section is demist section, is connected in (C) section, and this section of diameter is d 4, wherein d 4/ d 3=0.7-0.9, (A) is equipped with slurry circulating pump (6), oxidation fan (3), slurry agitating device (2), slurries crystalline solid rear pump (5) in section; (B) section and (C) section, fill respectively 2 grades of spray equipments (7), spray equipment (8); (D) section installation demister (9).
CN201420083186.7U 2014-02-26 2014-02-26 Efficient desulfurizing, dedusting and demisting device adopting multi-stage reducing and multi-stage spraying Expired - Fee Related CN203899442U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107362675A (en) * 2016-05-12 2017-11-21 南京凯盛国际工程有限公司 Cement kiln flue gas while desulfuration demercuration system and method
CN108187457A (en) * 2018-03-20 2018-06-22 成都信息工程大学 A kind of uphole steam generator movable type skid flue gas desulfurization and denitrification device
CN112107990A (en) * 2020-09-01 2020-12-22 邹华智 Efficient atomization spray desulfurization tower and desulfurization process thereof
CN114452766A (en) * 2020-10-21 2022-05-10 中国石油化工股份有限公司 Sulfur precipitation device, and treatment system and treatment method for sulfur-containing waste gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107362675A (en) * 2016-05-12 2017-11-21 南京凯盛国际工程有限公司 Cement kiln flue gas while desulfuration demercuration system and method
CN108187457A (en) * 2018-03-20 2018-06-22 成都信息工程大学 A kind of uphole steam generator movable type skid flue gas desulfurization and denitrification device
CN112107990A (en) * 2020-09-01 2020-12-22 邹华智 Efficient atomization spray desulfurization tower and desulfurization process thereof
CN114452766A (en) * 2020-10-21 2022-05-10 中国石油化工股份有限公司 Sulfur precipitation device, and treatment system and treatment method for sulfur-containing waste gas

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20141029

Termination date: 20190226