CN102078760A - Method for desulfurizing and denitrifying flue gas - Google Patents
Method for desulfurizing and denitrifying flue gas Download PDFInfo
- Publication number
- CN102078760A CN102078760A CN2010105728746A CN201010572874A CN102078760A CN 102078760 A CN102078760 A CN 102078760A CN 2010105728746 A CN2010105728746 A CN 2010105728746A CN 201010572874 A CN201010572874 A CN 201010572874A CN 102078760 A CN102078760 A CN 102078760A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- flue gas
- heated separator
- cooling device
- pipeline
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a method for desulfurizing and denitrifying flue gas, which is mainly to absorb SO2 and NXOX in the flue gas by utilizing H2O2 and separate H2SO4 and HNO3 by utilizing the temperature in waste flue gas to heat, and is implemented by a device consisting of a boiler discharge flue, a HNO3 storage tank, a cooling device, a heating separator, an absorption column, a chimney, a pump, a H2O2 storage tank and a H2SO4 storage tank. Burt gas of a boiler is conveyed to the heating separator through a conveying pipeline, and the heating separator conveys one part of the burnt gas which is then conveyed to the HNO3 storage tank to the cooling device through a conveying pipeline. The heating separator is also connected to the absorption column, and the absorption column is also connected to the chimney. The absorption column is connected to the H2O2 storage tank and the heating separator through a pipeline and the pump, and the heating separator is connected to the H2O2 storage tank through a pipeline and the cooling device. The heating separator is also connected to the H2SO4 storage tank through a pipeline and the cooling device. In the method, the integral process is simple, the desulfurization and denitrification are synchronously performed, and particularly the economic benefit in a treatment process is high.
Description
Technical field
The present invention relates to the flue gas ash removal method, relate in particular to a kind of flue gas desulfuration and denitrification method.
Background technology
Utilizing in the process of heat energy, flue dust can pollute environment and atmosphere, and especially sulphur in the flue dust and nitrogen are serious to the pollution of atmosphere to environment damage.So carried out widely in the world to the flue gas desulfuration and denitrification Study on Technology, dry process wherein has small investment, advantages such as the simple and easy processing of product of equipment, but dry process also exists the absorbent utilization rate low, low and can not remove the shortcoming of nitrogen simultaneously to the removal efficiency of sulphur.Prior art is a system complex aspect flue gas desulfurization and denitrogenation on the whole, and the investment of equipment and the expense of operation maintenance are higher.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art part, a kind of flue gas desulfuration and denitrification method is provided, adopt the program of simplifying as far as possible, reach effect effective desulfurization of flue gas and denitrogenation.
A kind of flue gas desulfuration and denitrification method of the present invention mainly is to utilize H
2O
2Absorb the SO in the flue gas
2, N
XO
X, utilize the temperature heating in the expense flue gas to isolate H
2SO
4And HNO
3, include boiler exhaust gas road, HNO
3Storage tank, cooling device A, heated separator A, absorption tower, chimney, cooling device B, heated separator B, pump, H
2O
2Storage tank, cooling device C and H
2SO
4Storage tank is formed.The present invention adopts the SO in the hydrogen peroxide absorption flue gas
2And N
XO
X, can extract H
2SO
4With industrial HNO
3, make flue gas reach emission standards, its reaction equation is:
SO
2+H
2O
2===H
2SO
?4
2NO
?2+H
2O
2===2HNO
3
2NO
2+3H
2O
2===2HNO
3+2H
2O
N
2O+4H
2O
2===2HNO
3+3H
2O
N
2O
4+H
2O
2===2HNO
3
Concrete technological process is: the boiler combustion waste gas by the boiler exhaust gas road is sent here, be transported to heated separator A and heated separator B through conveyance conduit, and heated separator A is transported to cooling device A with a part wherein through conveyance conduit, is transported to HNO again
3Storage tank.Heated separator A also connects absorption tower and heated separator B simultaneously, and heated separator B also is connected to the absorption tower simultaneously, and the absorption tower is connected to chimney again.The absorption tower is connected to H by pipeline
2O
2Storage tank and heated separator A, heated separator B is connected to H by pipeline and cooling device B
2O
2Storage tank.Heated separator B is connected to H by pipeline and cooling device C again simultaneously
2SO
4Storage tank.120 to 140 ℃ boiler smoke after heated separator A and heated separator B heat exchange, is transported to the absorption tower by the road, by pump with H
2O
2H in the storage tank
2O
2Be pressed into the absorption tower, counter current contacting absorbs the SO in the flue gas
2And N
XO
XAfter, flue gas drains into chimney.Liquid after the absorption is delivered to heated separator A, isolates HNO
3After deliver to heated separator B again, isolate H
2SO
4, isolated HNO
3Behind cooling device A, deliver to HNO
3Storage tank, isolated H
2SO
4C delivers to H through cooling device
2SO
4Storage tank.The moisture content of heated separator B evaporation turns back to H again after cooling device B cooling
2O
2In the storage tank.
A kind of flue gas desulfuration and denitrification method of the present invention, integrated artistic is simple, and desulfurization and denitrogenation are carried out simultaneously, and especially good in economic efficiency in the treatment process learnt 1 ton of SO of every absorption through experiment
2Or N
XO
XBut 623 yuan of additional incomes so the present invention can do the processing procedure of boiler waste gas as the good industry of economy, make the normal operation of boiler and exhaust-gas treatment become optimum cyclic process.
Description of drawings
The specific embodiment
Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: a kind of flue gas desulfuration and denitrification method of the present invention mainly is to utilize H
2O
2Absorb the SO in the flue gas
2, N
XO
X, utilize the temperature heating in the expense flue gas to isolate H
2SO
4And HNO
3, include boiler exhaust gas road 1, HNO
3 Storage tank 2, cooling device A3, heated separator A4, absorption tower 5, chimney 6, cooling device B7, heated separator B8, pump 9, H
2O
2 Storage tank 10, cooling device C11 and H
2SO
4Storage tank 12 is formed.The present invention adopts the SO in the hydrogen peroxide absorption flue gas
2And N
XO
X, can extract H
2SO
4With industrial HNO
3, make flue gas reach emission standards, its reaction equation is:
SO
2+H
2O
2===H
2SO
?4
2NO
?2+H
2O
2===2HNO
3
2NO
2+3H
2O
2===2HNO
3+2H
2O
N
2O+4H
2O
2===2HNO
3+3H
2O
N
2O
4+H
2O
2===2HNO
3
Concrete technological process is: the boiler combustion waste gas by boiler exhaust gas road 1 is sent here, be transported to heated separator A4 and heated separator B8 through conveyance conduit, and heated separator A4 is transported to cooling device A3 with a part wherein through conveyance conduit, is transported to HNO again
3Storage tank 2.Heated separator A4 also connects absorption tower 5 and heated separator B8 simultaneously, and heated separator B8 also is connected to absorption tower 5 simultaneously, and absorption tower 5 is connected to chimney 6 again.Absorption tower 5 is connected to H by pipeline and pump 9
2O
2Storage tank 10 and heated separator A4, heated separator B8 is connected to H by pipeline and cooling device B7
2O
2Storage tank 10.Heated separator B8 is connected to H by pipeline and cooling device C11 again simultaneously
2SO
4Storage tank 12.120 to 140 ℃ boiler smoke after heated separator A4 and heated separator B8 heat exchange, is transported to absorption tower 5 by the road, by pump 9 with H
2O
2H in the storage tank 10
2O
2Be pressed into absorption tower 5, counter current contacting absorbs the SO in the flue gas
2And N
XO
XAfter, flue gas drains into chimney 6.Liquid after the absorption is delivered to heated separator A4, isolates HNO
3After deliver to heated separator B8 again, isolate H
2SO
4, isolated HNO
3Behind cooling device A3, deliver to HNO
3 Storage tank 2, isolated H
2SO
4C11 delivers to H through cooling device
2SO
4Storage tank 12.The moisture content of heated separator B8 evaporation turns back to H again after cooling device B7 cooling
2O
2In the storage tank 10.A kind of flue gas desulfuration and denitrification method of the present invention, integrated artistic is simple, and desulfurization and denitrogenation are carried out simultaneously, and especially good in economic efficiency in the treatment process learnt 1 ton of SO of every absorption through experiment
2Or N
XO
XBut 623 yuan of additional incomes so the present invention can do the processing procedure of boiler waste gas as the good industry of economy, make the normal operation of boiler and exhaust-gas treatment become optimum cyclic process.
Claims (1)
1. a flue gas desulfuration and denitrification method mainly is to utilize H
2O
2Absorb the SO in the flue gas
2, N
XO
X, utilize the temperature heating in the expense flue gas to isolate H
2SO
4And HNO
3It is characterized in that the boiler combustion waste gas sent here by boiler exhaust gas road (1), be transported to heated separator A(4 through conveyance conduit) and heated separator B(8), heated separator A(4) will be wherein a part be transported to cooling device A(3 through conveyance conduit), be transported to HNO again
3Storage tank (2); Heated separator A(4) also connect absorption tower (5) and heated separator B(8 simultaneously), heated separator B(8) also be connected to absorption tower (5) simultaneously, absorption tower (5) are connected to chimney (6) again; Absorption tower (5) is connected to H by pipeline and pump (9)
2O
2Storage tank (10) and heated separator A(4), heated separator B(8) by pipeline and cooling device B(7) be connected to H
2O
2Storage tank (10); Heated separator B(8) again simultaneously by pipeline and cooling device C(11) be connected to H
2SO
4Storage tank (12).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105728746A CN102078760A (en) | 2010-12-05 | 2010-12-05 | Method for desulfurizing and denitrifying flue gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105728746A CN102078760A (en) | 2010-12-05 | 2010-12-05 | Method for desulfurizing and denitrifying flue gas |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102078760A true CN102078760A (en) | 2011-06-01 |
Family
ID=44085072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010105728746A Pending CN102078760A (en) | 2010-12-05 | 2010-12-05 | Method for desulfurizing and denitrifying flue gas |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102078760A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105692563A (en) * | 2016-01-27 | 2016-06-22 | 山东三维石化工程股份有限公司 | SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device |
CN106390741A (en) * | 2016-10-20 | 2017-02-15 | 武汉华喻燃能工程技术有限公司 | H2O2-catalytic-oxidation-based system and method for removing NO, SO2 and Hg0 in flue gas |
-
2010
- 2010-12-05 CN CN2010105728746A patent/CN102078760A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105692563A (en) * | 2016-01-27 | 2016-06-22 | 山东三维石化工程股份有限公司 | SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device |
CN105692563B (en) * | 2016-01-27 | 2018-11-13 | 山东三维石化工程股份有限公司 | SWSR-7 sulfur recovery technologies and device |
CN106390741A (en) * | 2016-10-20 | 2017-02-15 | 武汉华喻燃能工程技术有限公司 | H2O2-catalytic-oxidation-based system and method for removing NO, SO2 and Hg0 in flue gas |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103900391A (en) | Selective sintering-machine flue-gas heat exchange and denitration system and method thereof | |
CN204786491U (en) | Boiler smoke waste -heat application system | |
CN104296543A (en) | Denitration and waste heat recovery integrated furnace | |
CN104324575B (en) | A kind of system of spray absorber formula sintering flue gas and desulfurizing and denitrifying | |
CN202224052U (en) | Device for removing mercury in coal-fired power plant with wet flue gas desulfurization wastewater | |
CN107469595A (en) | A kind of dust removal integrated device and method of waste gas of industrial kiln and furnace desulphurization denitration | |
CN103706239A (en) | Low temperature rotary electric station flue gas denitrification system based on absorption technology | |
CN203043801U (en) | Flue gas pollutant removal device | |
CN204735114U (en) | Exhaust treatment device of steam power plant | |
CN104548900A (en) | Process device of coke oven fume denitrification, desulfuration and reheating system | |
CN204380479U (en) | A kind of system of coke oven flue exhuast gas desulfurization denitration | |
CN204365119U (en) | A kind of coke oven flue gas denitration desulfurization and reheat system process unit | |
CN103047660A (en) | Yellow phosphorus tail gas recycling system | |
CN102078760A (en) | Method for desulfurizing and denitrifying flue gas | |
CN203777934U (en) | Denitration device for flue gas purification of steel sintering machine | |
CN102954476A (en) | Processing method of tail gas containing trace organic constituents | |
CN102847430A (en) | System and technology for cleaning flue gas | |
CN204469519U (en) | A kind of flue gas desulfurization denitration dust-removing integrated device | |
CN207287094U (en) | A kind of dust removal integrated equipment of waste gas of industrial kiln and furnace desulphurization denitration | |
CN202705199U (en) | Sludge gasification treatment system | |
CN205127744U (en) | CFB boiler denitration demercuration device | |
CN103537187A (en) | Sulfur dioxide enriched gas purification system and method for preparing sulfur by gas purification | |
CN207137667U (en) | A kind of reclamation of stack gas afterheat and the integrated apparatus of desulfurization | |
CN201251192Y (en) | Air-purifying, warming and discharged-waste-gas recovering device | |
CN202893177U (en) | Smoke purifying system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C12 | Rejection of a patent application after its publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110601 |