CN104190233B - A kind of flue gas undershoot jetting type desulfurizer - Google Patents
A kind of flue gas undershoot jetting type desulfurizer Download PDFInfo
- Publication number
- CN104190233B CN104190233B CN201410456897.9A CN201410456897A CN104190233B CN 104190233 B CN104190233 B CN 104190233B CN 201410456897 A CN201410456897 A CN 201410456897A CN 104190233 B CN104190233 B CN 104190233B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- undershoot
- limewash
- main body
- jet nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of desulfurizer of flue gas undershoot jetting type, comprise vulcanization reaction main body, limewash dosing storage tank, separator, lime water pump, pulse valve, two groups of head-on collision jet nozzles, limewash circulating pump, four undershoot jet nozzles, sack cleaner, circulation air-introduced machine, circulating flue gas entrance, smoke induced draught fan, chimneys compositions; Lime aqueous solution jets collision is broken for limewash drop and pollutes flue gas generation desulphurization reaction, unreacted lime aqueous solution is deposited on bottom frustum type, and be connected with limewash dosing storage tank by circulating pump, flue gas after desulfurization is connected with sack cleaner, and the flue gas after its small portion dedusting enters at a slow speed to slow down desulfurization zone flue gas flow rate from desulphurization reaction main body top.The invention provides a kind of desulfurizer fully utilizing jet feature, there is desulfuration efficiency high, the advantages such as technique is simple, good stability, with low cost.
Description
Technical field
The present invention relates to a kind of flue gas undershoot jetting type desulfurizer, belong to the technical field of atmospheric environment protection.
Background technology
Sulfur dioxide is one of major pollutants in air, to human body and environmental hazard huge.China is world's producing coal and coal-fired big country, causes even more serious impact by coal fire discharged sulfur dioxide.Along with 2013, State Council issued " prevention and control of air pollution action plan ", received much concern to the discharge of sulfur dioxide and process.
Current flue gas desulfurization technique is mainly based on Limestone-gypsum Wet Flue Gas Desulfurization Process, rotating spraying semi-dry desulphurization, active carbon dry desulfurization etc., along with the development of science and technology, the fume desulphurization method that be born akali sulphide doctor treatment, membrane absorption method, Technology for Microbial Desulfurization etc. are emerging.In the world today the most extensive use be still Limestone-gypsum Wet Flue Gas Desulfurization Process technology, be gas liquid reaction, reaction speed is fast, desulfuration efficiency higher than 90%, technology maturation, widely applicable; But because wet desulphurization product is liquid or sludge, more difficult, equipment corrosion is serious, and after washing, flue-gas temperature reduces, and affects flue gas lifting height, need reheating, energy consumption is high, and floor space is large, investment and operating cost high, system complex, equipment are huge, water consumption is large, one-time investment is high, are generally applicable to large power plant.In addition, rotating spraying semi-dry desulphurization technology is then because its apparatus and process simply causes concern, but automation requires higher, and the consumption of absorbent is difficult to control and atomization cost is higher, is the difficult problem that it faces.
Summary of the invention
Goal of the invention: for above-mentioned Problems existing, the invention provides a kind of flue gas undershoot jetting type desulfurizer, solve the problems such as complex process, equipment is huge, improve desulfuration efficiency, optimize the processing procedure of product sludge, achieve the desulfur technology of low cost.
Technical scheme:
A desulfurizer for flue gas undershoot jetting type, comprises desulfurizing agent closed circuit, flue gas desulfurization closed circuit and vulcanization reaction main body;
Desulfurizing agent closed circuit comprises limewash dosing storage tank, separator, lime water pump, some groups of head-on collision jet nozzles and limewash circulating pump; The outlet of described limewash dosing storage tank connects the entrance of separator, and the outlet of described separator connects the entrance of lime water pump, and the limewash delivery side of pump jet nozzle that clashes with a group is respectively connected; Often group head-on collision jet nozzle comprises two identical nozzles, and these two jet expansions are relative; The jet expansion of head-on collision jet nozzle stretches in vulcanization reaction main body, and the bottom of described vulcanization reaction main body is connected with described limewash dosing storage tank by limewash circulating pump;
Flue gas desulfurization closed circuit comprises: several flue gas undershoot jet nozzle, sack cleaner, circulation air-introduced machine, circulating flue gas entrance, smoke induced draught fan and chimneys; Described flue gas undershoot jet nozzle is evenly distributed on the below of head-on collision jet nozzle, and the jet expansion of this flue gas undershoot jet nozzle stretches in vulcanization reaction main body; Sack cleaner is positioned on the upside of vulcanization reaction main body, and sack cleaner outlet is divided into two-way, leads up to recirculation blower, enters in vulcanization reaction main body through circulating flue gas entrance; Smoke induced draught fan of separately leading up to enters chimney;
In work, the limewash in limewash dosing storage tank by entering often group head-on collision jet nozzle after separator and lime water pump respectively, enters vulcanization reaction main body by head-on collision jet nozzle successively; Pending useless flue gas enters desulphurization reaction main body by flue gas undershoot jet nozzle, with the limewash generation desulphurization reaction in desulphurization reaction main body, reacted flue gas enters sack cleaner dedusting, gas after dedusting is divided into two-way, and recirculation blower of leading up to enters vulcanization reaction main body through circulating flue gas entrance; Separately lead up to after smoke induced draught fan enters chimney and discharge.
Further, described lime water pump is connected with head-on collision jet nozzle by pulse valve, controls the speed of gas liquid reaction, makes crushing effect decrease the waste of desulfurizing agent better simultaneously.
Further, described head-on collision jet nozzle has two groups, and described flue gas undershoot jet nozzle is 4.
Further, described desulphurization reaction bottom part body is inverted trapezoidal, avoids the lower flue gas of part peripheral dust content and directly reacts with the desulfurizing agent being deposited on bottom.
Further, described four flue gas undershoot jet nozzles adopt light-dark separation device, present the flue gas that the low flue gas parcel dust content of dust content is high, make the particle in most of flue gas and the sludge after desulfurization enter sack cleaner and carry out dedusting, thus the reluctant problem of particle in sludge and flue gas after decreasing desulfurization.
Beneficial effect:
1, limewash Wet Flue Gas Desulfurization Technique of the present invention is gas liquid reaction, and reaction rate is fast, and desulfuration efficiency is high, and limewash adopts the feature of head-on collision jet crushing simultaneously, simplifies sulfur removal technology, reduces equipment cost;
2, flue gas is polluted by adopting the flue gas undershoot jet nozzle of light-dark separation device, present the flue gas that the low flue gas parcel dust content of dust content is high, make the particle in most of flue gas and the sludge after desulfurization enter sack cleaner and carry out dedusting, thus the reluctant problem of particle in sludge and flue gas after decreasing desulfurization;
3, the fraction flue gas after dedusting is entered from desulfurizing tower top by recirculation blower, and this part flue gas and main flume collide, and greatly slow down the flue gas flow rate of desulfurization reaction zone, adds the holdup time of air-flow, contributes to reaction more thorough;
4, desulfurizing agent adopts cheap aqua calcis, and this device is strong to solution impurity pardon, greatly reduces desulphurization cost;
5, adopt pulse valve to control the fragmentation of impinging stream, impinging stream carrys out broken lime aqueous solution to neglect fast suddenly slow rhythm, controls the speed of gas liquid reaction, makes crushing effect decrease the waste of desulfurizing agent better simultaneously;
6, the present invention's two groups of desulfurizing agent impinging stream nozzles can regulate angle of inclination according to desulfuration solution concentration and properties of fire smoke flow, and this arrangement can make breakup of drop effect reach best, and can adapt to different exhaust gas volumns and can reach optimized;
7, desulfurization reaction zone cross section is less, makes flue gas can not be comparatively large due to heat conduction, and gas speed is excessively slow, while the desulfurization solid waste that generates also can enter sack cleaner with flue gas;
8, desulphurization reaction main body lower end presents inverted trapezoidal distribution in order to deposit unreacted lime aqueous solution, avoids the lower flue gas of part peripheral dust content and directly reacts with the desulfurizing agent being deposited on bottom.
Accompanying drawing explanation
Fig. 1 is a kind of desulfurizer structural representation of flue gas undershoot jetting type;
Fig. 2 is the layout top view of two groups of impinging stream nozzles;
Fig. 3 is the layout top view of flue gas undershoot jet nozzle;
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Be illustrated in figure 1 a kind of desulfurizer of flue gas undershoot jetting type, mainly comprise desulfurizing agent closed circuit and flue gas desulfurization closed circuit two Iarge-scale system, wherein desulfurizing agent limewash carries out in desulphurization reaction main body 1 with pollution flue gas.Concrete structure is as follows.
Desulfurizing agent closed circuit comprises limewash dosing storage tank 2, separator 3,4, two groups, lime water pump head-on collision jet nozzle and limewash circulating pump 6; The outlet of limewash dosing storage tank 2 connects the entrance of separator 3, and the outlet of separator 3 connects the entrance of lime water pump 4, and the outlet of lime water pump 4 is connected by pulse valve 5 jet nozzle that clashes with a group respectively; Often group head-on collision jet nozzle comprises two identical nozzles, and these two jet expansions are relative, and as shown in Figure 2, the first head-on collision jet nozzle N1 and the 3rd jet nozzle N3 that clashes is one group, and second jet nozzle N2 and the 4th jet nozzle N4 that clashes that clashes is one group; The jet expansion of head-on collision jet nozzle stretches in vulcanization reaction main body 1, and limewash enters vulcanization reaction main body 1 by the nozzle of the jet nozzle that clashes.The end of vulcanization reaction main body 1, connects limewash circulating pump 6, and the outlet of limewash circulating pump 6 connects limewash dosing storage tank 2.
Flue gas desulfurization closed circuit comprises: four flue gas undershoot jet nozzles, sack cleaner 9, circulation air-introduced machine 8, circulating flue gas entrance 7, smoke induced draught fan 10 and chimneys 11.Flue gas undershoot jet nozzle is evenly distributed on the below of head-on collision jet nozzle, and the jet expansion of this flue gas undershoot jet nozzle stretches in vulcanization reaction main body 1; Sack cleaner 9 is positioned on the upside of vulcanization reaction main body 1, and sack cleaner 9 outlet is divided into two-way, leads up to recirculation blower 8, enters in vulcanization reaction main body 1 through circulating flue gas entrance 7; Smoke induced draught fan 10 of separately leading up to enters chimney 11.
In work, the limewash in limewash dosing storage tank 2 by entering often group head-on collision jet nozzle after separator 3 and lime water pump 4 respectively, enters vulcanization reaction main body 1 by head-on collision jet nozzle successively; Pending useless flue gas enters desulphurization reaction main body 1 by flue gas undershoot jet nozzle, outgoing limewash in head-on collision jet nozzle above flue gas undershoot jet nozzle, with pending useless smoke contacts in limewash Jet with downward flow direction process, the useless flue gas of part and limewash is had to reflect; When limewash drops on bottom vulcanization reaction main body 1, enter limewash dosing storage tank 2 by limewash circulating pump 6 stand-by.Reacted flue gas enters sack cleaner 9 dedusting, gas after dedusting is divided into two-way, recirculation blower 8 of leading up to enters vulcanization reaction main body 1 through circulating flue gas entrance 7, enters from the upper end of reactive agent, and these flue gases fully do not reacted react with limewash again.Another road gas is discharged after entering chimney 11 by smoke induced draught fan 10.
Based on the desulfurizer of above-mentioned flue gas undershoot jetting type, make explanation specifically:
The present invention is a kind of wet desulfurizing process of combining the fragmentation of limewash desulfurizing agent impinging stream and flue gas air-coal separating, this technique overcomes that conventional Wet Flue Gas Desulfurization Technique complex process, equipment are huge, the reluctant shortcoming of product sludge, and its desulfuration efficiency is high, system is simple, cost of investment is low, operating cost is little.It is characterized in that: adopt limewash cheap and easy to get as desulfurization absorbing liquid, be broken in desulfurization drop in head-on collision and efficiently realize sweetening process fast with the flue gas of incoming flow air-coal separating, product calcium sulfite enters deduster with flue gas, and unreacted liquid realizes recycling
Preferably, basic process is as follows:
The alkaline saturable absorber that in limewash dosing storage tank, storage quick lime and water are joined, solid impurity is deviate from through separator containing certain impurity lime aqueous solution, alkaline absorbent is then connected with two groups of head-on collision jet nozzles be arranged symmetrically with via pulse valve, regulate impinging stream nozzle relative level face tilt certain angle, make a large amount of broken tapered downward dispersion of drop, pulse valve sends pulse signal, then impinging stream carrys out broken lime aqueous solution to neglect fast suddenly slow rhythm.Limewash absorbing liquid temperature after fragmentation controls at 25 DEG C ~ 60 DEG C.The undershoot jet nozzle that pollution flue gas containing sulfur dioxide is arranged symmetrically with by four, undershoot jet nozzle place adopts light-dark separation device, pollute flue gas and present the high flue gas of the low flue gas parcel dust content of dust content, decrease the sedimentation of dust-laden particle in desulphurization reaction main body in flue gas, pollute the limewash absorbent generation gas-liquid desulphurization reaction after flue gas and fragmentation:
Ca(OH)
2+SO
2＝CaSO
3+H
2O
Gas liquid reaction speed is fast, and desulfuration efficiency is high, and desulfurization reaction zone is subject to impinging stream and damped oscillation occurs simultaneously, increase mixing of drop and flue gas, extend desulfurization time, after the purification at a slow speed of desulphurization reaction body top, flue gas slow down reaction zone flue gas gas speed, extends desulfurization time.The calcium sulfite of mud shape that reaction generates and water and high-temperature flue gas conduct heat.Unreacted absorbent is settled down to taper type desulphurization reaction bottom part body, by limewash circulating pump, solution is delivered to limewash dosing storage tank; Flue-gas temperature after desulfurization about 70 DEG C ~ 95 DEG C, enter sack cleaner and carry out dedusting, flue gas after dedusting is divided into two-way, sub-fraction flue gas (about 10%) enters desulphurization reaction main body from circulating flue gas entrance under the effect of circulation air-introduced machine, major part flue gas (about 90%) arrives chimney by smoke induced draught fan, thus discharged to air.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a desulfurizer for flue gas undershoot jetting type, is characterized in that: comprise desulfurizing agent closed circuit, flue gas desulfurization closed circuit and vulcanization reaction main body (1);
Desulfurizing agent closed circuit comprises limewash dosing storage tank (2), separator (3), lime water pump (4), some groups of head-on collision jet nozzles and limewash circulating pump (6); The outlet of described limewash dosing storage tank (2) connects the entrance of separator (3), the outlet of described separator (3) connects the entrance of lime water pump (4), and the outlet of lime water pump (4) jet nozzle that clashes with a group is respectively connected; Often group head-on collision jet nozzle comprises two identical nozzles, and these two jet expansions are relative; The jet expansion of head-on collision jet nozzle stretches in vulcanization reaction main body (1), and the bottom of described vulcanization reaction main body (1) is connected with described limewash dosing storage tank (2) by limewash circulating pump (6);
Flue gas desulfurization closed circuit comprises: several flue gas undershoot jet nozzles, sack cleaner (9), circulation air-introduced machine (8), circulating flue gas entrance (7), smoke induced draught fan (10) and chimney (11); Described flue gas undershoot jet nozzle is evenly distributed on the below of head-on collision jet nozzle, and the jet expansion of this flue gas undershoot jet nozzle stretches in vulcanization reaction main body (1); Sack cleaner (9) is positioned at vulcanization reaction main body (1) upside, sack cleaner (9) outlet is divided into two-way, lead up to recirculation blower (8), enter in vulcanization reaction main body (1) through circulating flue gas entrance (7); Smoke induced draught fan (10) of separately leading up to enters chimney (11);
In work, limewash in limewash dosing storage tank (2) by entering often group head-on collision jet nozzle after separator (3) and lime water pump (4) respectively, enters vulcanization reaction main body (1) by head-on collision jet nozzle successively; Pending useless flue gas enters desulphurization reaction main body (1) by flue gas undershoot jet nozzle, with the limewash generation desulphurization reaction in desulphurization reaction main body (1), reacted flue gas enters sack cleaner (9) dedusting, gas after dedusting is divided into two-way, and recirculation blower (8) of leading up to enters vulcanization reaction main body (1) through circulating flue gas entrance (7); Smoke induced draught fan (10) of separately leading up to enters chimney (11) and discharges afterwards.
2. the desulfurizer of a kind of flue gas undershoot jetting type according to claim 1, is characterized in that: described lime water pump (4) is connected with head-on collision jet nozzle by pulse valve (5).
3. the desulfurizer of a kind of flue gas undershoot jetting type according to claim 1, is characterized in that: described head-on collision jet nozzle has two groups, and described flue gas undershoot jet nozzle is 4.
4. the desulfurizer of a kind of flue gas undershoot jetting type according to claim 1, is characterized in that: described desulphurization reaction main body (1) bottom is in inverted trapezoidal.
5. the desulfurizer of a kind of flue gas undershoot jetting type according to claim 1, is characterized in that: described flue gas undershoot jet nozzle is four, all adopts light-dark separation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456897.9A CN104190233B (en) | 2014-09-09 | 2014-09-09 | A kind of flue gas undershoot jetting type desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456897.9A CN104190233B (en) | 2014-09-09 | 2014-09-09 | A kind of flue gas undershoot jetting type desulfurizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104190233A CN104190233A (en) | 2014-12-10 |
| CN104190233B true CN104190233B (en) | 2015-12-09 |
Family
ID=52075685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410456897.9A Active CN104190233B (en) | 2014-09-09 | 2014-09-09 | A kind of flue gas undershoot jetting type desulfurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104190233B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106215649A (en) * | 2016-08-18 | 2016-12-14 | 山西长林能源科技有限公司 | A kind of method of flue gas desulfurization and denitrification and device thereof |
| CN106215676B (en) * | 2016-08-30 | 2019-01-29 | 湖南循安环境资源技术有限公司 | A kind of semi-dry desulphurization tower equipped with flue gas self-loopa regulating device |
| CN107149860A (en) * | 2016-12-08 | 2017-09-12 | 湖北金汉江精制棉有限公司 | Bleaching chemical cotton exhaust gas processing device |
| CN112957892B (en) * | 2021-02-05 | 2022-09-20 | 中国华能集团清洁能源技术研究院有限公司 | System and method for absorbing carbon dioxide in boiler flue gas |
| CN112957902A (en) * | 2021-02-05 | 2021-06-15 | 中国华能集团清洁能源技术研究院有限公司 | System and method for absorbing carbon dioxide in thermal power plant flue gas caustic soda solution |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5853683A (en) * | 1995-06-19 | 1998-12-29 | Public Services Electric & Gas Corporation | Hybrid SCR/SNCR process |
| US20030202927A1 (en) * | 2002-04-24 | 2003-10-30 | Minkara Rafic Y. | Reduction of ammonia in flue gas and fly ash |
| CN1204958C (en) * | 2003-08-15 | 2005-06-08 | 武汉凯迪电力股份有限公司 | Dry-process flue gas desulfurizing method with W-type circulating fluidization |
| CN1224445C (en) * | 2003-08-15 | 2005-10-26 | 武汉凯迪电力股份有限公司 | Dry-process flue gas desulfurizing method using combined gas jet |
| CN201023026Y (en) * | 2007-04-20 | 2008-02-20 | 魏兵 | Flue gas spraying desulphurizing tower |
| CN101406804B (en) * | 2008-09-09 | 2011-08-17 | 刘启杰 | Purification treatment device for flue tail gas of fuel oil cremator |
| CN101670249A (en) * | 2009-09-25 | 2010-03-17 | 中环（中国）工程有限公司 | LAVAL pipe jet air stirring device |
| CN101780370B (en) * | 2010-02-03 | 2012-12-26 | 上海交通大学 | Desulphurizing device based on internal circulation W type multi-fluid alkali fog generator and desulphurizing method |
-
2014
- 2014-09-09 CN CN201410456897.9A patent/CN104190233B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104190233A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104190233B (en) | A kind of flue gas undershoot jetting type desulfurizer | |
| CN100525885C (en) | Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower | |
| CN202683052U (en) | Front semi-dry gas desulfurization system | |
| CN205164488U (en) | Mixed flue gas wet flue gas desulfurization device of fire coal - catalysis | |
| CN201543380U (en) | Efficient wet-type flue gas desulfurization device employing dual-alkali method for industrial coal-fired boiler | |
| CN102350198A (en) | Flue gas baffling double-slurry pool absorbing tower | |
| CN204816213U (en) | High -efficient wet flue gas desulfurization dust removal integrated device | |
| CN101940870A (en) | Device for removing sulfur dioxide in flue gas | |
| CN101342454B (en) | Rotational flow and spray combined desulfurizing device | |
| CN101342455B (en) | Rotational flow and spray combined desulfurizing device | |
| CN102343215A (en) | Dual-chamber multi-absorption wet flue gas desulfurizing device | |
| CN102423593A (en) | Method for simultaneously dedusting, desulphurizing and denitrating boiler flue gas in coal-fired industry | |
| CN101121096A (en) | Wet type desulfurizing dust-removing technology for fire coal boiler fume | |
| CN203235395U (en) | Flue gas desulfurization equipment | |
| CN208711402U (en) | A kind of high-efficiency multi-stage spraying foam dust-removing desulfurating apparatus | |
| CN105477998A (en) | Low-energy consumption high-efficiency calcium-based wet desulfurization device and technology | |
| CN201684533U (en) | Wet dust removal desulfurizing unit | |
| CN201823467U (en) | High-efficiency energy-saving desulfurization deduster | |
| CN201300034Y (en) | Vortex-sprinkling combined desulphurizing device | |
| CN204447724U (en) | A kind of Pneumatic emulsifying device of dedusting and desulfurizing tower | |
| CN205042310U (en) | Novel limekiln flue gas desulfurization dust pelletizing system | |
| CN211328868U (en) | High-efficient gas desulfurization device | |
| CN210814692U (en) | Flue gas desulfurization is with spraying tympanic bulla tower system | |
| CN101143298B (en) | High-efficiency wet-desulfurizing dust remover | |
| CN203090739U (en) | Desulfurization absorption tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |