CN102225310A - Desulphurization-denitration integrated desulfurization tower - Google Patents

Desulphurization-denitration integrated desulfurization tower Download PDF

Info

Publication number
CN102225310A
CN102225310A CN201110111097XA CN201110111097A CN102225310A CN 102225310 A CN102225310 A CN 102225310A CN 201110111097X A CN201110111097X A CN 201110111097XA CN 201110111097 A CN201110111097 A CN 201110111097A CN 102225310 A CN102225310 A CN 102225310A
Authority
CN
China
Prior art keywords
denitrification integral
desulfurization
spray
layer
tower
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.)
Pending
Application number
CN201110111097XA
Other languages
Chinese (zh)
Inventor
卢志伟
孔浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Original Assignee
ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd filed Critical ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority to CN201110111097XA priority Critical patent/CN102225310A/en
Publication of CN102225310A publication Critical patent/CN102225310A/en
Pending legal-status Critical Current

Links

Abstract

A desulphurization-denitration integrated desulfurization tower comprises a flue gas outlet (1), an upper demister (2), upper flushing sprays (3), a lower demister (4), lower flushing sprays (5), fourth layer desulphurization-denitration integrated sprays (6), third layer desulphurization-denitration integrated sprays (7), second layer desulphurization-denitration integrated sprays (8), first layer desulphurization-denitration integrated sprays (9), and an flue gas inlet (10). The flue gas inlet is positioned on the sidewall at the bottom of the tower; the first layer desulphurization-denitration integrated sprays (9), the second layer desulphurization-denitration integrated sprays (8), the third layer desulphurization-denitration integrated sprays (7), the fourth layer desulphurization-denitration integrated sprays (6), the lower flushing sprays (5), the lower demister (4), the upper flushing sprays (3) and the upper demister (2) are respectively disposed from bottom to top inside the tower; the first layer desulphurization-denitration integrated sprays (9) are arranged over the flue gas inlet (10); and the flue gas outlet (1) is disposed on the sidewall at the top of the tower.

Description

The desulfurization and denitrification integral desulfurizing tower
Technical field
The present invention relates to a kind of desulfurizing tower, relate in particular to a kind of JTS-TX type desulfurization and denitrification integral desulfurizing tower.
Background technology
Sulfur dioxide and nitrogen oxide are the bigger gaseous contaminants of influence in the atmosphere pollution, and human body, environment and the ecosystem are had very big harm.Along with the increasingly stringent of environmental requirement, the problem of NOx and SO2 discharging more and more receives publicity.Sulfur dioxide and nitrogen oxide mainly stem from the combustion process of fossil fuels such as coal, oil, and the fume emission of the roasting of ore, smelting process.Wherein various burning boilers particularly power plant boiler smoke evacuation have characteristics such as concentration is low, exhaust gas volumn is big, floating dust is many and are difficult to administer.In the conventional art, discharging sulfur dioxide in flue gas and purification of nitrogen oxides technology are normally separately carried out desulfurization and denitration, complicated huge, defectives such as initial outlay is big, operating cost height that this has caused the discharging flue gas purification system have seriously restricted the actual enforcement of discharging flue gas desulfurization and denitrification.
Flue gas desulfurization technique mainly based on lime stone-gypsum wet, wet-type ammonia, rotating spraying half-driedly dispel, the in-furnace calcium spraying afterbody heats activation, sea water desulfuration, electron beam desulfurization, flue gas circulating fluidized bed desulfurization etc., wherein limestone-based process is the tail flue gas desulfur technology that is most widely used in the world now, its subject matter is that the solubility of absorbent (lime or lime stone) is little, utilization rate is low, and the waste residue amount is big etc.
Gas denitrifying technology mainly contains SCR technology (SCR), SNCR technology (SNCR), electronic beam method, impulse electric corona method, complex compound absorption process and urea absorption process etc., comparatively ripe gas denitrifying technology at present in service mainly is SCR technology, SNCR technology and SNCR/SCR combination technique, but the SCR method exists the initial investment expense higher, operating temperature range is narrow, and exist ammonia to leak, can generate shortcomings such as N2O, and the easy inactivation of catalyst; And the SNCR denitration efficiency is lower, and the ammonia leakage is many, easily causes secondary pollution.Countries in the world in recent years, especially industrially developed country has all carried out desulphurization denitration Study on Technology exploitation simultaneously in succession, and carried out certain commercial Application, electron beam irradiation method, impulse electric corona method, active carbon adsorption, NOxSO technology and Pahlman flue gas desulfurization and denitration technique etc. are abroad arranged at present, but China still lack at present this type of technology or because of energy consumption and cost too high and incompatible.
Summary of the invention
The invention provides a kind of under present domestic medium small boiler operating mode at above deficiency, build, operating cost is lower, use the comparatively easy novel desulfurizing tower of control, and under the situation that increases operating cost not significantly, once boiler smoke is carried out desulphurization denitration.
In order to overcome the above problems, the invention provides following technical scheme: a kind of desulfurization and denitrification integral desulfurizing tower is characterized in that: comprise exhanst gas outlet, upper strata demister, upper strata rinse spray, lower floor's demister, lower floor's rinse spray, the 4th pull-up sulphur denitrification integral spray, the 3rd pull-up sulphur denitrification integral spray, second layer desulfurization and denitrification integral spray, ground floor desulfurization and denitrification integral spray, gas approach;
Gas approach is positioned at the tower lower wall, in tower from down and on be provided with ground floor desulfurization and denitrification integral spray, second layer desulfurization and denitrification integral spray, the 3rd pull-up sulphur denitrification integral spray, the 4th pull-up sulphur denitrification integral spray, lower floor's rinse spray, lower floor's demister, upper strata rinse spray, upper strata demister successively, ground floor desulfurization and denitrification integral spray is positioned on the gas approach, and exhanst gas outlet is positioned at the tower upper side wall.
The gradient at described gas approach place is designed to 7-9 °.
Every layer of spraying layer of described ground floor desulfurization and denitrification integral spray, second layer desulfurization and denitrification integral spray, the 3rd pull-up sulphur denitrification integral spray, the 4th pull-up sulphur denitrification integral spray is provided with 21 atomizers.
Can also be provided with cat ladder at tower side wall.
Beneficial effect:
1, investment construction cost is low.Compare not obvious increase investment cost with traditional ammonia process of desulfurization mode.
2, operating cost is low.The present invention can be switched between desulfurization, denitration, three kinds of patterns of desulfurization and denitrification integral, and operating cost is low than other denitration modes.
3, equipment interoperability is strong.This equipment adopts the void tower type design, and wherein can upgrade in many places.
4, denitration efficiency can satisfy 12 planning requirements.
5, lower resistance: additional facilities is few in this desulfuration absorbing tower metal conduit formula structure, tower, its resistance≤800Pa, and this sulfur removal technology system crushing is more much lower than conventional desulfurizing tower, utilizes the rich pressure head of air-introduced machine design to satisfy the demand.
6, adaptability is strong: according to the operating condition in power plant, power plant load changes from 100%(at full capacity) all can reach high desulfurization efficiency to 75% underload.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
As shown in Figure 1, a kind of desulfurization and denitrification integral desulfurizing tower comprises: exhanst gas outlet 1, upper strata demister 2, upper strata rinse spray 3, lower floor's demister 4, lower floor's rinse spray 5, the 4th pull-up sulphur denitrification integral spray the 6, the 3rd pull-up sulphur denitrification integral spray 7, second layer desulfurization and denitrification integral spray 8, ground floor desulfurization and denitrification integral spray 9, gas approach 10.
Gas approach 10 is positioned at the tower lower wall, in tower from down and on be provided with ground floor desulfurization and denitrification integral spray 9, second layer desulfurization and denitrification integral spray the 8, the 3rd pull-up sulphur denitrification integral spray the 7, the 4th pull-up sulphur denitrification integral spray 6, lower floor's rinse spray 5, lower floor's demister 4, upper strata rinse spray 3, upper strata demister 2 successively, ground floor desulfurization and denitrification integral spray 9 is positioned on the gas approach 10, exhanst gas outlet 1 is positioned at the tower upper side wall, can also be provided with cat ladder 11 at tower side wall.
After boiler smoke advanced deduster, under the air-introduced machine effect, enter the gas approach 10 of this desulfurizing tower.Under the flue gas flow rate of 4 meter per seconds, earlier through undermost reverse temperature adjustment spray (being ground floor desulfurization and denitrification integral spray 9), to the processing of lowering the temperature of the flue gas of excessive temperature.Flue gas after cooling finishes at the uniform velocity rises in tower, carries out absorption liquid spray (three layers of spraying layer are second layer desulfurization and denitrification integral spray the 8, the 3rd pull-up sulphur denitrification integral spray the 7, the 4th pull-up sulphur denitrification integral spray 6) by three layers of spraying layer successively.Spraying layer does not atomize to absorption liquid liquid by there being the shower nozzle of obstruction.The absorption liquid main component is an ammonia, urea and triethanolamine mixed solution, and the mass ratio of three kinds of solutes is respectively in the solution: 3%, 1.95%, 0.05%.The main effect of triethanolamine in water is additive, and itself participates in reaction on a small quantity or not.
It is as follows that ammonia and sulfur dioxide react concrete reaction equation:
SO 2+2NH 3+H 2O (NH4) 2SO 3 (l)
(NH4) 2SO 3+SO 2+H 2O 2NH 4HSO 3 (2)
It is as follows that urea and sulfur dioxide react concrete reaction equation:
NO(g)+NO 2(g)+(NH 22CO(a.q)=2H 2O(l)+CO 2(g)+2N 2(g)(4)
SO2(g)+(NH 22CO(a.q)+2H 2O(l)+0.5?O 2(g)=(NH 42SO 4(a.q)+CO 2(g) (5)
Under the condition that triethanolamine exists, can significantly improve the efficient of above-mentioned reaction, particularly urea oxidation to NOX.
Flue gas is after passing through three layers of spraying layer, and desulfuration efficiency can reach 95%, and denitration efficiency can reach 60-80%.Contain a large amount of little drop in the flue gas this moment, through tower upper part of double eddy flow plate demister (being lower floor's rinse spray 5, lower floor's demister 4, upper strata rinse spray 3, upper strata demister 2) drop in the flue gas is removed, have the outward turning of certain angle behind the flue gas process eddy flow plate demister, be that flue gas can rotate and collides with the bucket wall, droplet can be fused into big drop, and it is dirty along bucket wall one-tenth thigh, reach away the purpose of moisture in the flue gas, the clean flue gas that advanced demister enters horizontal flue by cat head trunk formula exhanst gas outlet 1 and is disposed to chimney.
The gradient at gas approach 10 places is designed to 7-9 °.
Every layer of spraying layer of ground floor desulfurization and denitrification integral spray 9, second layer desulfurization and denitrification integral spray the 8, the 3rd pull-up sulphur denitrification integral spray the 7, the 4th pull-up sulphur denitrification integral spray 6 is provided with 21 atomizers, spray liquid is 90 ° of diffusions downwards by atomizer, and the SO to fine droplet and gas phase of atomizing 2, NO XCarry out absorption reaction.

Claims (4)

1. a desulfurization and denitrification integral desulfurizing tower is characterized in that: comprise exhanst gas outlet (1), upper strata demister (2), upper strata rinse spray (3), lower floor's demister (4), lower floor's rinse spray (5), the 4th pull-up sulphur denitrification integral spray (6), the 3rd pull-up sulphur denitrification integral spray (7), second layer desulfurization and denitrification integral spray (8), ground floor desulfurization and denitrification integral spray (9), gas approach (10);
Gas approach (10) is positioned at the tower lower wall, in tower from down and on be provided with ground floor desulfurization and denitrification integral spray (9), second layer desulfurization and denitrification integral spray (8), the 3rd pull-up sulphur denitrification integral spray (7), the 4th pull-up sulphur denitrification integral spray (6), lower floor's rinse spray (5), lower floor's demister (4), upper strata rinse spray (3), upper strata demister (2) successively, ground floor desulfurization and denitrification integral spray (9) is positioned on the gas approach (10), and exhanst gas outlet (1) is positioned at the tower upper side wall.
2. desulfurization and denitrification integral desulfurizing tower according to claim 1 is characterized in that: the gradient that described gas approach (10) is located is designed to 7-9 °.
3. desulfurization and denitrification integral desulfurizing tower according to claim 1 is characterized in that: every layer of spraying layer of described ground floor desulfurization and denitrification integral spray (9), second layer desulfurization and denitrification integral spray (8), the 3rd pull-up sulphur denitrification integral spray (7), the 4th pull-up sulphur denitrification integral spray (6) is provided with 21 atomizers.
4. desulfurization and denitrification integral desulfurizing tower according to claim 1 is characterized in that: can also be provided with cat ladder (11) at tower side wall.
CN201110111097XA 2011-05-01 2011-05-01 Desulphurization-denitration integrated desulfurization tower Pending CN102225310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110111097XA CN102225310A (en) 2011-05-01 2011-05-01 Desulphurization-denitration integrated desulfurization tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110111097XA CN102225310A (en) 2011-05-01 2011-05-01 Desulphurization-denitration integrated desulfurization tower

Publications (1)

Publication Number Publication Date
CN102225310A true CN102225310A (en) 2011-10-26

Family

ID=44806330

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110111097XA Pending CN102225310A (en) 2011-05-01 2011-05-01 Desulphurization-denitration integrated desulfurization tower

Country Status (1)

Country Link
CN (1) CN102225310A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266212A (en) * 2014-10-08 2015-01-07 淮南市明月环保科技有限责任公司 Desulfurization, denitration and dedusting integrated straw pellet boiler
CN105013312A (en) * 2015-07-27 2015-11-04 航天环境工程有限公司 Desulfurization and denitration integration absorbing device and application
CN107497271A (en) * 2017-07-31 2017-12-22 江苏天诺环境工程技术开发有限公司 A kind of integrated desulphurization denitration desulfurizing tower
CN110368794A (en) * 2019-07-22 2019-10-25 浙江宏电环保股份有限公司 A kind of smoke gas multi-section formula disappears white device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2746971Y (en) * 2004-12-07 2005-12-21 镇江市江南环保设备研究所 Desulfurization and denitration integrated flue-gas purification tower
CN201320447Y (en) * 2008-10-27 2009-10-07 江苏新世纪江南环保有限公司 Integrated smoke purification device for desulphurization and denitration
CN202087228U (en) * 2011-05-01 2011-12-28 镇江金锐环保设备有限公司 Desulphurization denitration integrated desulphurization tower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2746971Y (en) * 2004-12-07 2005-12-21 镇江市江南环保设备研究所 Desulfurization and denitration integrated flue-gas purification tower
CN201320447Y (en) * 2008-10-27 2009-10-07 江苏新世纪江南环保有限公司 Integrated smoke purification device for desulphurization and denitration
CN202087228U (en) * 2011-05-01 2011-12-28 镇江金锐环保设备有限公司 Desulphurization denitration integrated desulphurization tower

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266212A (en) * 2014-10-08 2015-01-07 淮南市明月环保科技有限责任公司 Desulfurization, denitration and dedusting integrated straw pellet boiler
CN104266212B (en) * 2014-10-08 2019-09-20 淮南市明月环保科技有限责任公司 A kind of straw particle boiler desulphurization denitration dedusting integration process
CN105013312A (en) * 2015-07-27 2015-11-04 航天环境工程有限公司 Desulfurization and denitration integration absorbing device and application
CN107497271A (en) * 2017-07-31 2017-12-22 江苏天诺环境工程技术开发有限公司 A kind of integrated desulphurization denitration desulfurizing tower
CN110368794A (en) * 2019-07-22 2019-10-25 浙江宏电环保股份有限公司 A kind of smoke gas multi-section formula disappears white device
CN110368794B (en) * 2019-07-22 2022-04-08 浙江宏电环保股份有限公司 Flue gas multistage formula disappears and whitewashes device

Similar Documents

Publication Publication Date Title
CN101482262B (en) Lignite boiler combustion method capable of reducing nitrogen oxide emission
CN203447967U (en) Combined smoke desulfuration, denitration and demercuration device of industrial boiler
CN102936651A (en) Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method
CN203436995U (en) Cooperative control device for multi-pollutant in sintering flue gas
CN202169137U (en) Integrated device for ammonia method simultaneous desulfurization and denitrification technology of flue gas
CN204159203U (en) A kind of flue gas denitrification system being exclusively used in three-waste fluidized mix combustion furnace
CN102225310A (en) Desulphurization-denitration integrated desulfurization tower
CN204247052U (en) Single tower type double-cycle spray composite absorption device
CN204170591U (en) Perforated trays spray column
CN202478814U (en) Integral equipment integrating downstream washing desulfuration with ozone jetting back-flow denitration
CN206715647U (en) A kind of desulphurization denitration dust removal integrated plant
CN104437039B (en) Denitration demister after wet desulphurization and method
CN202087228U (en) Desulphurization denitration integrated desulphurization tower
CN202478813U (en) Wet flue gas desulphurization system used for coal-fired power plant boiler
CN205340553U (en) Dust absorption water circulating spray system
CN204034567U (en) A kind of application SCR technology equipment for denitrifying flue gas
CN107420927A (en) A kind of fire coal boiler fume high-efficient purification and UTILIZATION OF VESIDUAL HEAT IN technique
CN204891598U (en) System for nitrogen oxide and oxysulfide in while desorption flue gas
CN203955015U (en) Denitration demister after wet desulphurization
CN205084558U (en) Flue gas two -stage condensation dust collector after desulfurization
CN201040229Y (en) Flue gas simultaneous desulfurize denitrate integrated two-stage spraying type absorption reactor
CN204412058U (en) A kind of coupling synergy mass transfer apparatus of wet desulfurization system
CN203090746U (en) Desulfurization and denitrification integrated device for smoke
CN203389527U (en) Low-temperature multi-effect flue gas treatment device
CN207102319U (en) SDA alkali adding method deep desulfuration dedustings and wastewater zero discharge flue gas processing device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20111026