CN202087228U - Desulphurization denitration integrated desulphurization tower - Google Patents
Desulphurization denitration integrated desulphurization tower Download PDFInfo
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- CN202087228U CN202087228U CN2011201342563U CN201120134256U CN202087228U CN 202087228 U CN202087228 U CN 202087228U CN 2011201342563 U CN2011201342563 U CN 2011201342563U CN 201120134256 U CN201120134256 U CN 201120134256U CN 202087228 U CN202087228 U CN 202087228U
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- denitrification integral
- desulfurization
- spray
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- tower
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Abstract
The utility model relates to a desulphurization denitration integrated desulphurization tower, which comprises a smoke outlet (1), an upper layer defogger (2), an upper layer rinsing sprayer (3), a lower layer defogger (4), a lower layer rinsing sprayer (5), a fourth layer desulphurization denitration integrated sprayer (6), a third layer desulphurization denitration integrated sprayer (7), a second layer desulphurization denitration integrated sprayer (8), a first layer desulphurization denitration integrated sprayer (9) and a smoke inlet (10); the smoke inlet is arranged on the lower side wall of the tower, the first layer desulphurization denitration integrated sprayer (9), the second layer desulphurization denitration integrated sprayer (8), the third layer desulphurization denitration integrated sprayer (7), the fourth layer desulphurization denitration integrated sprayer (6), the lower layer rinsing sprayer (5), the lower defogger (4), the upper rinsing sprayer (3) and the upper layer defogger (2) are arranged inside the tower from bottom to top, the first layer desulphurization denitration integrated sprayer (9) is arranged above the smoke inlet (10), and the smoke outlet (1) is arranged on the upper side wall of the tower.
Description
Technical field
The utility model relates to a kind of desulfurizing tower, relates 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.
The utility model content
Provide a kind of under present domestic medium small boiler operating mode at above not enough the utility model, built, operating cost is lower, uses the comparatively easy novel desulfurizing tower of control.
In order to overcome the above problems, the utility model 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 utility model can switch 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 the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described 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.
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
2）
2CO（a.q）＝2H
2O（l）＋CO
2（g）＋2N
2（g）（4）
SO2（g）＋（NH
2）
2CO（a.q）＋2H
2O（l）＋0.5?O
2（g）=（NH
4）
2SO
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201342563U CN202087228U (en) | 2011-05-01 | 2011-05-01 | Desulphurization denitration integrated desulphurization tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201342563U CN202087228U (en) | 2011-05-01 | 2011-05-01 | Desulphurization denitration integrated desulphurization tower |
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| Publication Number | Publication Date |
|---|---|
| CN202087228U true CN202087228U (en) | 2011-12-28 |
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ID=45362327
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201342563U Expired - Fee Related CN202087228U (en) | 2011-05-01 | 2011-05-01 | Desulphurization denitration integrated desulphurization tower |
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225310A (en) * | 2011-05-01 | 2011-10-26 | 镇江金锐环保设备有限公司 | Desulphurization-denitration integrated desulfurization tower |
-
2011
- 2011-05-01 CN CN2011201342563U patent/CN202087228U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225310A (en) * | 2011-05-01 | 2011-10-26 | 镇江金锐环保设备有限公司 | Desulphurization-denitration integrated desulfurization tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130501 |