CN108730679A - A kind of anticorrosion parsing gas discharge system - Google Patents
A kind of anticorrosion parsing gas discharge system Download PDFInfo
- Publication number
- CN108730679A CN108730679A CN201810904634.8A CN201810904634A CN108730679A CN 108730679 A CN108730679 A CN 108730679A CN 201810904634 A CN201810904634 A CN 201810904634A CN 108730679 A CN108730679 A CN 108730679A
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- China
- Prior art keywords
- manifold
- valve
- compressed air
- pneumatic
- gas
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000006227 byproduct Substances 0.000 claims abstract description 17
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 230000023556 desulfurization Effects 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of anticorrosions to parse gas discharge system, including manifold, compressed air line and bypass branch；The both ends manifold are separately connected the parsing gas vent and byproduct system of regenerator；Bypass branch one end is connected with manifold, and the other end is connected with the smoke inlet of the desulphurization denitration tower in flue gas desulfurization and denitrification system, and bypass branch is equipped with the pneumatic on-off valve of third；Compressed air line one end is connected with manifold, and the other end is connected with compressed air source, and compressed air hose road is equipped with the 4th pneumatic on-off valve；On manifold, it is located between parsing gas vent and compressed air line equipped with the first pneumatic on-off valve；On manifold, the second pneumatic on-off valve is equipped between compressed air line and byproduct system.The present invention can be imported compressed air in manifold in system-down by the setting of compressed air line, and remaining parsing gas in manifold is discharged from smoke inlet or byproduct system, carries out the displacement of parsing gas, prevents from corroding valve and pipeline part.
Description
Technical field
The invention belongs to field of environment engineering, and in particular to a kind of using carbon base catalyst as adsorbent and the boiler of catalyst
In flue gas combined desulfurization and denitration device, the anti-corrosion system for the high temperature parsing gas in regenerative process to be discharged.
Background technology
Carbon base catalyst flue gas desulfurization and denitrification technical principle is：Flue gas under the absorption and catalytic action of carbon base catalyst,
SO in flue gas2And O2And H20, which reacts, generates H2SO4, H2SO4It is adsorbed on carbon base catalyst surface；It is urged simultaneously using charcoal base
The catalytic performance of agent, NOx occurs catalytic reduction reaction with ammonia and generates N in flue gas2, realize the desulphurization denitration of flue gas, adsorb
Carbon base catalyst after catalysis reaction recycles after being regenerated.Ammonia is injected in desulfuring and denitrifying apparatus, for realizing flue gas
NOx conversion in flue gas is N by the denitration reaction of purification process2。
In the actual production process, high temperature, SO containing high concentration2Parsing gas, easily corrode valve and pipe in operation
Road, therefore, those skilled in the art, which has been devoted to exploitation one kind, can meet the parsing smooth conveying of gas, and can prevent valve
The parsing gas discharge system of door and corrosive pipeline.
Invention content
The purpose of the present invention is to solve defects existing in the prior art, provide one kind and can effectively prevent high temperature parsing
Discharge system of the gas to pipeline, valve erosion.
In order to achieve the above object, the present invention provides a kind of anticorrosions to parse gas discharge system, the system and flue gas
Regenerator in system for desulfuration and denitration is connected, the resolution gas for will be formed in the carbon base catalyst regenerative process after absorption flue gas
Body is expelled to byproduct system；Anticorrosion parsing gas discharge system of the present invention includes manifold, compressed air line and bypass
Branch pipe；The both ends manifold are separately connected the parsing gas vent and byproduct system of regenerator；Bypass branch one end is connected with manifold,
The other end is connected with the smoke inlet of the desulphurization denitration tower in flue gas desulfurization and denitrification system, and bypass branch is pneumatic equipped with third
On-off valve；Compressed air line one end is connected with manifold, and the other end is connected with compressed air source, and compressed air hose road is equipped with
4th pneumatic on-off valve；On manifold, it is located between parsing gas vent and compressed air line equipped with the first pneumatic on-off valve；Always
Guan Shang, the second pneumatic on-off valve is equipped between compressed air line and byproduct system.
By the setting of compressed air line, compressed air can be imported in manifold in system-down, it will be residual in manifold
The parsing gas stayed is discharged from smoke inlet or byproduct system, carries out the displacement of parsing gas, prevents to valve and pipeline part
Corrosion.Parsing gas can be passed through in desulphurization denitration tower by the setting of bypass branch simultaneously when byproduct system breaks down.
Further, anticorrosion parsing gas discharge system further includes sampling branch pipe；Sampling branch pipe one end is connected with manifold,
And sampling branch pipe is equipped with manually-operated gate.
The setting of the sampling branch pipe facilitates extraction parsing gas to be chemically examined.
Further, manifold, bypass branch outside are equipped with insulating layer.
Further, branch pipe is sampled, compressed air line outside is equipped with insulating layer.
By the setting of pipeline heat insulation layer, can avoid high temperature resolution gas temperature reduction leads to the corrosion to pipeline.The guarantor
The setting of warm layer can also be used other Insulations and be replaced.
Further, the first pneumatic on-off valve, the second pneumatic on-off valve, the pneumatic on-off valve of third, the 4th pneumatic on-off valve,
Electric heater is equipped on manually-operated gate.
The valvular electric heater of institute is opened in advance before system starts, and valve is heated to the temperature close with gas is parsed
Degree prevents the valve that the parsing gas of start-up course high temperature touches room temperature from generating acid dew corrosion valve.
The present invention has the following advantages compared with prior art：
The present invention can be imported compressed air in manifold in system-down by the setting of compressed air line, will be in manifold
Remaining parsing gas is discharged from smoke inlet or byproduct system, carries out the displacement of parsing gas, prevents to valve and pipeline
Part corrosion.Parsing gas can be passed through desulphurization denitration tower by the setting of bypass branch simultaneously when byproduct system breaks down
It is interior.
Description of the drawings
Fig. 1 is the structural schematic diagram that anticorrosion of the present invention parses gas discharge system.
In figure, 1- nitrogen first entrances；2- nitrogen second entrances；3- heating gas inlets；4- heat gas exports；5- is cold
But gas access；6- cooling gas exports；7- parses gas vent；8- parses gas main；9- bypass branch；10- third gas
Dynamic on-off valve；The first pneumatic on-off valves of 11-；12- compressed air lines；The 4th pneumatic on-off valves of 13-；14- sampling hand-operated valves
Door；The second pneumatic on-off valves of 15-；16- regenerators；17- desulphurization denitration towers；18- bringing-up sections；19- changeover portions；20- cooling sections；
21- byproduct systems；22- compressed air sources.
Specific implementation mode
Following embodiment is only to enumerating explanation.The present invention can have various suitable changes and variation, all in the present invention
Spirit and principle within any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.And the carbon base catalyst mentioned in the present invention is the activated carbon of improvement, belongs to one kind of activated carbon, it is all to belong to activated carbon class
Adsorbent, including：Conventional activated carbon, activated coke, carbon-supported catalyst etc., should be included in protection scope of the present invention it
It is interior.
It is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the regeneration in the present invention a kind of anticorrosion parsing gas discharge system, with flue gas desulfurization and denitrification system
Tower 16 is connected, for the parsing gas formed in the carbon base catalyst regenerative process after absorption flue gas to be expelled to by-product strain
System 21.
Wherein, the detailed process of carbon base catalyst recycling is：Flue gas is from the entrance smoke box of desulphurization denitration tower 17
Into carbon base catalyst adsorption layer, purified flue gas is discharged into chimney by exporting smoke box.The carbon base catalyst of adsorption saturation is logical
Material circulating system is crossed to enter in regenerator 16；In the bringing-up section 18 of regenerator 16, recirculated hot air walks shell side, from heat gas
Entrance 3 enters from 4 discharge of heat gas outlet, and carbon base catalyst walks tube side and enters bringing-up section from top, is heated in bringing-up section 18
It regenerates, when reaching changeover portion 19, carbon base catalyst completes regeneration, and parsing gas is detached with carbon base catalyst, parses gas from solution
It analyses and is arranged outside gas vent 7, and carbon base catalyst enters cooling section 20；In the cooling section 20 of regenerator, cooling air walks shell side,
Enter from cooling gas inlet 5 from 6 discharge of cooling gas outlet, carbon base catalyst walks tube side, enters cooling section from top, cooling
After regenerator is discharged, by material circulating system transport to desulphurization denitration tower reuse；The bringing-up section 18 of regenerator 16 simultaneously
Top and cooling pars infrasegmentalis 20, by nitrogen first entrance 1 and ammonia second entrance 2, being passed through nitrogen enters regenerator simultaneously respectively
Tube side, protection carbon base catalyst reduces in heat regenerative process and scaling loss and prevents from catching fire, and will be after as gas is delivered
Analytically gas vent 7 is discharged the parsing gas discharged in journey, to release SO2Volume ratio is more than 20%, temperature and is higher than 400
DEG C parsing gas, through the invention anticorrosion parsing gas discharge system be delivered to byproduct for treatment system, realize the money of sulphur
Sourceization utilizes.
As shown in Figure 1, a kind of anticorrosion of the present invention parses gas discharge system, first pneumatic on-off valve is set in manifold 8
11 and the second pneumatic on-off valve 15, compressed air provide air source as driving power, control the break-make of the branch pipe, it can be achieved that regeneration
The outlet of tower parsing flue gas and the entrance of byproduct system control break-make respectively.Bypass branch 9 is set on manifold 8, and is being bypassed
The pneumatic on-off valve 10 of third is arranged in branch pipe 9, and compressed air provides air source as driving power, the break-make of the branch pipe controlled, in pair
Parsing gas can be passed through desulphurization denitration tower entrance when product systems failure.Simultaneously sampling manually-operated gate is provided on manifold 8
14, it is chemically examined to extract parsing gas.Compressed air line 12 is set on manifold 8, in the setting of compressed air line 12 the
Four pneumatic on-off valves 13, compressed air provide air source as driving power, the break-make of the branch pipe are controlled, to replace after a shutdown
Remaining acid parsing gas, prevents the corrosion to valve and pipeline in manifold 8.
Manifold 8, bypass branch 9 prevent corrosion of the high temperature resolution gas temperature reduction to pipeline according to Insulation is taken.
First pneumatic on-off valve 8, the second pneumatic on-off valve 15, the pneumatic on-off valve 10 of third, 13 and of the 4th pneumatic on-off valve
Manually-operated gate 14 is both provided with electric heater, and takes Insulation.
The valvular electric heater of institute is opened in advance before system starts, and valve is heated to the temperature close with gas is parsed
Degree prevents the valve that the parsing gas of start-up course high temperature touches room temperature from generating acid dew corrosion valve.
The valvular electric heater time-delay closing of institute after system is closed, remaining acid parsing gas replaces in manifold 8
Electric heater is closed after finishing, prevents corrosion of the system-down in the process to valve.
Claims (5)
1. a kind of anticorrosion parses gas discharge system, which is connected with the regenerator in flue gas desulfurization and denitrification system, is used for
The parsing gas formed in carbon base catalyst regenerative process after absorption flue gas is expelled to byproduct system；Its feature exists
In：The anticorrosion parsing gas discharge system includes manifold, compressed air line and bypass branch；The both ends the manifold difference
Connect the parsing gas vent and byproduct system of regenerator；Described bypass branch one end is connected with manifold, the other end and flue gas
The smoke inlet of desulphurization denitration tower in system for desulfuration and denitration is connected, and bypass branch is equipped with the pneumatic on-off valve of third；It is described
Compressed air line one end is connected with manifold, and the other end is connected with compressed air source, and compressed air hose road is equipped with the 4th gas
Dynamic on-off valve；On the manifold, it is located between parsing gas vent and compressed air line equipped with the first pneumatic on-off valve；It is described
On manifold, the second pneumatic on-off valve is equipped between compressed air line and byproduct system.
2. anticorrosion according to claim 1 parses gas discharge system, it is characterised in that：The anticorrosion parses gas
Discharge system further includes sampling branch pipe；Described sampling branch pipe one end is connected with the manifold, and samples branch pipe and be equipped with hand-operated valve
Door.
3. anticorrosion according to claim 2 parses gas discharge system, it is characterised in that：The manifold, bypass branch
Outside is equipped with insulating layer.
4. anticorrosion according to claim 3 parses gas discharge system, it is characterised in that：The sampling branch pipe, compression
Insulating layer is equipped with outside air pipe line.
5. anticorrosion according to claim 4 parses gas discharge system, it is characterised in that：The first pneumatic break-make
Valve, the pneumatic on-off valve of third, the 4th pneumatic on-off valve, is equipped with electric heater on manually-operated gate at the second pneumatic on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810904634.8A CN108730679B (en) | 2018-08-09 | 2018-08-09 | Corrosion-resistant analysis gas exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810904634.8A CN108730679B (en) | 2018-08-09 | 2018-08-09 | Corrosion-resistant analysis gas exhaust system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108730679A true CN108730679A (en) | 2018-11-02 |
| CN108730679B CN108730679B (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810904634.8A Active CN108730679B (en) | 2018-08-09 | 2018-08-09 | Corrosion-resistant analysis gas exhaust system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN141353B (en) * | 1973-06-29 | 1977-02-19 | Bundy Corp | |
| JPH01130715A (en) * | 1987-11-17 | 1989-05-23 | Toho Kako Kensetsu Kk | Adsorption and desorption device |
| CN105865853A (en) * | 2016-05-16 | 2016-08-17 | 威海捷诺曼自动化科技有限公司 | Online analysis system of ship exhaust emission |
| CN106178811A (en) * | 2015-04-29 | 2016-12-07 | 湖南中冶长天节能环保技术有限公司 | Prevent from resolving activated carbon Thermal desorption method and the device thereof of gas line clogging |
| CN207371539U (en) * | 2017-10-20 | 2018-05-18 | 国电科学技术研究院 | Three-stage carbon base catalyst regenerates Tower System |
| CN108096988A (en) * | 2018-02-09 | 2018-06-01 | 中冶长天国际工程有限责任公司 | A kind of flue gas purifying method and system for realizing wastewater zero discharge |
| CN208719688U (en) * | 2018-08-09 | 2019-04-09 | 国电环境保护研究院有限公司 | A kind of anticorrosion parsing gas discharge system |
-
2018
- 2018-08-09 CN CN201810904634.8A patent/CN108730679B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN141353B (en) * | 1973-06-29 | 1977-02-19 | Bundy Corp | |
| JPH01130715A (en) * | 1987-11-17 | 1989-05-23 | Toho Kako Kensetsu Kk | Adsorption and desorption device |
| CN106178811A (en) * | 2015-04-29 | 2016-12-07 | 湖南中冶长天节能环保技术有限公司 | Prevent from resolving activated carbon Thermal desorption method and the device thereof of gas line clogging |
| CN105865853A (en) * | 2016-05-16 | 2016-08-17 | 威海捷诺曼自动化科技有限公司 | Online analysis system of ship exhaust emission |
| CN207371539U (en) * | 2017-10-20 | 2018-05-18 | 国电科学技术研究院 | Three-stage carbon base catalyst regenerates Tower System |
| CN108096988A (en) * | 2018-02-09 | 2018-06-01 | 中冶长天国际工程有限责任公司 | A kind of flue gas purifying method and system for realizing wastewater zero discharge |
| CN208719688U (en) * | 2018-08-09 | 2019-04-09 | 国电环境保护研究院有限公司 | A kind of anticorrosion parsing gas discharge system |
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| CN108730679B (en) | 2023-12-08 |
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