CN107570218A - Two-part carbon base catalyst regenerates Tower System - Google Patents
Two-part carbon base catalyst regenerates Tower System Download PDFInfo
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- CN107570218A CN107570218A CN201710986780.5A CN201710986780A CN107570218A CN 107570218 A CN107570218 A CN 107570218A CN 201710986780 A CN201710986780 A CN 201710986780A CN 107570218 A CN107570218 A CN 107570218A
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Abstract
The present invention provides a kind of two-part carbon base catalyst regeneration Tower System, improves the capacity usage ratio in carbon base catalyst regenerative process, matching and flexibility of the enhancing carbon base catalyst regenerator with desulphurization denitration adsorption tower.The system regeneration tower tower body is from top to bottom divided into preparing section, bringing-up section, changeover portion, cooling section and outlet section, and the bringing-up section and cooling section use pipe shell type heat exchange structure, and regenerator tower body is tube side, and tube side walks carbon base catalyst, and shell side walks heat transferring medium；Carbon base catalyst enters from tower top, and the bottom of regenerator is reached via tube side, wherein setting changeover portion between bringing-up section and cooling section, changeover portion is used to discharge to be enriched with SO in tower2Gas, discharge SO2Gas passes to sulphuric acid plant.
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
Two-part carbon base catalyst regenerator in flue gas combined desulfurization and denitration device.
Background technology
Carbon base catalyst dry method flue gas Pollutant Control Technology, it is possible to achieve desulfurization and denitrification integral, can also remove flue dust,
SO3, the impurity such as heavy metal.The technology does not consume water substantially, saves great lot of water resources, and desulfuration efficiency is high, desulfuration byproduct is high
Concentration SO2, it is easy to recycling, this is the fairly obvious flue gas pollutant control technology of new generation of an advantage.Steel,
The multiple fields such as metallurgy, electric power, waste incineration have great application prospect.
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, H2SO4Absorption is on carbon base catalyst surface；Urged simultaneously using charcoal base
The catalytic performance of agent, NO in flue gasxCatalytic reduction reaction generation N occurs with ammonia2, realize the desulphurization denitration of flue gas.Absorption
Carbon base catalyst after catalytic reaction carries out regenerating Posterior circle utilization.Carbon base catalyst is the material after activated carbon improvement, than work
Property charcoal has stronger adsorption capacity and Geng Gao compression strength, is more suitable for as the absorption in flue gas combined desulfurization and denitration technology
Agent.
The flow condition of carbon base catalyst will influence carbon base catalyst and heat, cold air heat exchange efficiency, and charcoal in regenerator
The uniform blanking knot of entrance cloth and outlet of the regeneration efficiency of base catalyst, and the structure of regenerator, especially carbon base catalyst
One of structure, key influence factor undoubtedly therein.
Because station boiler has the problem of load variations are big, therefore exhaust gas volumn changes greatly, and causes single regenerator knot
The carbon base catalyst regenerator of structure and desulphurization denitration adsorption tower matching, flexibility are poor, carbon base catalyst regenerator operation into
This is higher.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of two-part carbon base catalyst regenerator
System, improves the capacity usage ratio in carbon base catalyst regenerative process, and enhancing carbon base catalyst regenerator adsorbs with desulphurization denitration
The matching of tower and flexibility.
The technical solution adopted in the present invention is as follows：
A kind of two-part carbon base catalyst regenerates Tower System, and regenerator tower body is from top to bottom divided into preparing section, bringing-up section, mistake
Section, cooling section and outlet section are crossed, the bringing-up section and cooling section use pipe shell type heat exchange structure, and regenerator tower body is tube side,
Tube side walks carbon base catalyst, and shell side walks heat transferring medium；Carbon base catalyst enters from tower top, and the bottom of regenerator is reached via tube side
Portion, wherein setting changeover portion between bringing-up section and cooling section, changeover portion is used to discharge to be enriched with SO in tower2Gas, discharge SO2
Gas passes to sulphuric acid plant.
The further design of the present invention is：
Wherein prepared section is provided with nitrogen heater, and the nitrogen after heating is passed through in regenerator preparation section as protection gas through pipeline.
The bringing-up section shell side uses air as heat transferring medium, and heat transferring medium is after air heater heats, by hot empty
Feed channel is connected to heating pars infrasegmentalis, with delivering to air heating again by hot-air blower after carbon base catalyst heat exchange in bringing-up section tower
Device, the heat exchange after heating are situated between to delivering to bringing-up section circulating-heating；
The heat transferring medium of cooling section uses cold air (surrounding air).
The outlet section of regenerator is provided with two carbon base catalysts and exported, and each carbon base catalyst outlet corresponds to a tune respectively
The roll feeder of activated coke flow is saved, roll feeder has the function of VFC.
Deflector is provided with the bringing-up section and cooling section air side shell side of regenerator, deflector is horizontally disposed with.
Outside the bringing-up section of regenerator and the shell side of cooling section（I.e. outside tower body）It is provided with heat-insulation layer.
Level-sensing device is provided with by the carbon base catalyst entrance of regenerator preparation section top.
Isolation sieve plate is provided with regenerator regenerator is divided into two regions.
The present invention compared with prior art, has following features：
1st, regenerator enrichment SO2Gas typically requires that air outlet temperature reaches more than its acid dew-point temperature, can effectively avoid being enriched with SO2
Corrosion of the gas to outlet conduit.But the nitrogen containing protection and sealing in enriched gas, nitrogen temperature is relatively low, if pressing
Environment temperature is passed through in tower, not only will greatly reduce final enrichment SO2The temperature of mixed gas, it can also cause the high work of temperature
Property Jiao because thermal stress wear.The present invention to add tower in nitrogen first heated, overcome corresponding problem, improve protection and
Sealing nitrogen enters the temperature of regenerator, also improves the temperature of regenerator preheating section carbon base catalyst indirectly.The nitrogen being preheated
Regenerator enriched gas outlet air temperature can be also improved indirectly, avoid caused by pipeline corroding because enriched gas temperature is too low.
2nd, it is divided into Liang Geta areas in two-part carbon base catalyst regenerator tower since preparation section, the regenerator area after subregion
Section is approximately the half of prepared section square-section, is advantageous to the uniform blanking of carbon base catalyst exit portion, with not subregion
Regeneration tower structure is compared, and enhances the heat exchange efficiency and regeneration effect of overall carbon base catalyst in regenerator；
3rd, the roll feeder of regenerator outlet has the function of variable frequency adjustment, can change feelings according to station boiler load or exhaust smoke level
Condition, adjust the flow of activated coke, greatly improve the flexibility of regenerator, reduce the operation of carbon base catalyst regenerator into
This.
4th, the superiority compared to the two-piece design of prior art is embodied in, and first, the nitrogen entered in tower is carried out
Heating, the mean temperature that changeover portion is enriched with to SO2 gases improve 20%；Second, corrosive pipeline drops significantly with equipment failure rate
It is low.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1- carbon base catalyst entrances；2- level-sensing devices；3- preparation sections；4- bringing-up sections；5- changeover portions；6- cooling sections；7-
Outlet section；8- roll feeders；9- carbon base catalysts export；10- nitrogen heaters；11- tops nitrogen comes；12- bringing-up sections heat
Air goes out；13- hot-air blowers；14- bringing-up sections hot-air comes；15- air heaters；16- cooling section cold airs go out；17- is cold
Air blower；18- cooling sections cold air comes；19- bottoms nitrogen comes；20- parsing gas changeover portions go out.
Embodiment：
The invention will be further described below in conjunction with the accompanying drawings：
Embodiment one：
As shown in figure 1, two-part carbon base catalyst regeneration Tower System tower body of the present invention is from top to bottom divided into preparing section 3, added
Hot arc 4, changeover portion 5, cooling section 6 and outlet section 7, bringing-up section 4 and cooling section 6 use pipe shell type heat exchange structure, regenerator tower
As tube side, tube side walks carbon base catalyst, and shell side walks heat transferring medium.Carbon base catalyst enters from tower top, reaches again via tube side
The bottom of raw tower, wherein setting changeover portion 5 between bringing-up section 4 and cooling section 5, changeover portion 5 is used to discharge to be enriched with SO in tower2
Gas, discharge SO2Gas passes to sulphuric acid plant.
Wherein prepared section 3 is provided with nitrogen heater 10, and the nitrogen after heating is pre- as protecting gas through pipeline to be passed through regenerator
In standby section.
Bringing-up section shell side uses air as heat transferring medium, and heat transferring medium is after air heater heats, by warm-air pipe
Road is connected to heating pars infrasegmentalis, with delivering to air heater again by hot-air blower after carbon base catalyst heat exchange in bringing-up section tower,
Heat exchange after heating is situated between to delivering to bringing-up section circulating-heating.The heat transferring medium of cooling section uses cold air.
The outlet section 7 of regenerator is provided with two carbon base catalysts and exported, and each carbon base catalyst outlet corresponds to one respectively
The roll feeder of activated coke flow is adjusted, roll feeder has the function of VFC.
Deflector is provided with the bringing-up section and cooling section air side shell side of regenerator, deflector is horizontally disposed with, with profit
In water conservancy diversion.Outside the bringing-up section of regenerator and the shell side of cooling section（I.e. outside tower body）It is provided with heat-insulation layer.In regenerator preparation section
Level-sensing device is provided with by portion's carbon base catalyst entrance.Isolation sieve plate is provided with regenerator regenerator is divided into two regions.
Two-part carbon base catalyst regenerator, regenerator top nitrogen pipeline, after nitrogen heater heats, is connected to again
Raw tower preparation section；For air after the heating of air heater 15, hot-air duct is connected to heating pars infrasegmentalis, is urged with bringing-up section charcoal base
After agent heat exchange, hot-air blower 13 is connected to from bringing-up section top by hot-air duct, is continued after being heated by air heater
Complete hot-air circulation；Cold air from cooling section top by cold-air duct with after the carbon base catalyst heat exchange of cooling pars infrasegmentalis, connecting
Air is connected to, cold air introduces through cold air blower fan 17.Tower bottom is also passed into unheated nitrogen as protection gas.
In order to strengthen the matching of carbon base catalyst regenerator and desulphurization denitration adsorption tower and flexibility, further enhance again
The heat exchange efficiency and regeneration efficiency of Sheng Tanei carbon base catalysts, two-part carbon base catalyst regenerator of the present invention are divided into from preparation section
Liang Ge regenerators area, each area horizontal cross-section is square after preparing section subregion, and it is approximately square that each Ta Qu horizontal cross-sections, which are,
Half；Outlet section is provided with two carbon base catalysts and exported, and corresponds to a roll feeder respectively, and roll feeder has VFC
Function, the flow of activated coke can be adjusted.
Workflow：Carbon base catalyst enters regenerator through tower top entrance, initially enters and is divided into two towers in prepared section storehouse
Area, then heat exchange regeneration is carried out via the high temperature air of bringing-up section tube side and this section of shell-side, the carbon base catalyst after regeneration entered
Section is crossed, the sulphur dioxide rich gas for regenerating desorption is expelled to acid making system by changeover portion, and then, carbon base catalyst is through cooling section
The cooling air heat exchange of tube side and this section of shell-side cools, and finally exports discharge regenerator by outlet section.
Embodiment two：
The two-part carbon base catalyst regeneration Tower System of this example, regenerator tower body are from top to bottom divided into preparing section, heating
Section, changeover portion, cooling section and outlet section.Wherein prepared section is not provided with nitrogen heater, and other parts structure is the same as embodiment one.Should
Nitrogen is passed directly into regenerator preparation section as protection gas through pipeline in system.The temperature of such changeover portion enrichment SO2 gases
It can not improve, corrosive pipeline can be more with equipment failure rate.
The present invention can have various suitable changes and change, and that is made within the spirit and principles of the invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In the present invention, carbon-supported catalysts belong to living
One kind of property charcoal, all adsorbents for belonging to activated carbon class, including：Conventional activated carbon, carbon base catalyst, carbon-based adsorbent etc.,
It should be included in the scope of the protection.
Claims (9)
1. a kind of two-part carbon base catalyst regenerates Tower System, it is characterized in that：Regenerator tower body is from top to bottom divided into preparing
Section, bringing-up section, changeover portion, cooling section and outlet section, the bringing-up section and cooling section use pipe shell type heat exchange structure, regenerator
Tower body is tube side, and tube side walks carbon base catalyst, and shell side walks heat transferring medium；Carbon base catalyst enters from tower top, reaches via tube side
The bottom of regenerator, wherein setting changeover portion between bringing-up section and cooling section, changeover portion is used to discharge to be enriched with SO in tower2Gas
Body, discharge SO2Gas passes to sulphuric acid plant.
2. two-part carbon base catalyst regeneration Tower System according to claim 1, it is characterized in that：Wherein prepared section is provided with nitrogen
Heater, the nitrogen after heating are passed through in regenerator preparation section as protection gas through pipeline.
3. two-part carbon base catalyst according to claim 1 or claim 2 regenerates Tower System, it is characterized in that：The bringing-up section shell side
Heat transferring medium is used air as, heat transferring medium is connected to heating pars infrasegmentalis after air heater heats, by hot-air duct,
With by hot-air blower delivering to air heater again after carbon base catalyst heat exchange in bringing-up section tower, the heat exchange after heating is situated between to delivering to
Bringing-up section circulating-heating.
4. two-part carbon base catalyst regeneration Tower System according to claim 3, it is characterized in that：The heat transferring medium of cooling section is adopted
Use cold air.
5. two-part carbon base catalyst regeneration Tower System according to claim 3, it is characterized in that：The outlet section of regenerator is provided with
Two carbon base catalyst outlets, each carbon base catalyst outlet correspond to the roll feeder of a regulation activated coke flow respectively,
Roll feeder has the function of VFC.
6. two-part carbon base catalyst regeneration Tower System according to claim 5, it is characterized in that：The bringing-up section of regenerator and cold
But deflector is provided with section air side shell side, deflector is horizontally disposed with.
7. two-part carbon base catalyst regeneration Tower System according to claim 6, it is characterized in that：The bringing-up section of regenerator and cold
But it is provided with heat-insulation layer outside the shell side of section.
8. two-part carbon base catalyst regeneration Tower System according to claim 7, it is characterized in that：Regenerator preparation section top charcoal
Level-sensing device is provided with by base catalyst inlet.
9. two-part carbon base catalyst regeneration Tower System according to claim 1, it is characterized in that：Isolation sieve is provided with regenerator
Regenerator is divided into two regions by plate.
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| CN201710986780.5A CN107570218A (en) | 2017-10-20 | 2017-10-20 | Two-part carbon base catalyst regenerates Tower System |
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| CN201710986780.5A CN107570218A (en) | 2017-10-20 | 2017-10-20 | Two-part carbon base catalyst regenerates Tower System |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855247A (en) * | 2018-08-09 | 2018-11-23 | 国电环境保护研究院有限公司 | A kind of regeneration method and device of the carbon base catalyst suitable for flue gas purification system |
| CN109908757A (en) * | 2019-04-18 | 2019-06-21 | 国电环境保护研究院有限公司 | A kind of carbon base catalyst regenerating unit and regeneration method |
| CN114768887A (en) * | 2022-04-13 | 2022-07-22 | 成都达奇环境科技有限公司 | Catalyst washing and regenerating method for catalytic flue gas desulfurization device |
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| CN102580706A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Heat exchange type active coke purifying and generating process system and heat exchange type active coke purifying and generating process method |
| CN105233673A (en) * | 2015-11-12 | 2016-01-13 | 国电科学技术研究院 | Carbon-based catalyst desulfurization and denitrification system and method |
| CN205145970U (en) * | 2015-11-12 | 2016-04-13 | 国电科学技术研究院 | Charcoal base catalyst SOx/NOx control system |
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2017
- 2017-10-20 CN CN201710986780.5A patent/CN107570218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102580706A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Heat exchange type active coke purifying and generating process system and heat exchange type active coke purifying and generating process method |
| CN105233673A (en) * | 2015-11-12 | 2016-01-13 | 国电科学技术研究院 | Carbon-based catalyst desulfurization and denitrification system and method |
| CN205145970U (en) * | 2015-11-12 | 2016-04-13 | 国电科学技术研究院 | Charcoal base catalyst SOx/NOx control system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855247A (en) * | 2018-08-09 | 2018-11-23 | 国电环境保护研究院有限公司 | A kind of regeneration method and device of the carbon base catalyst suitable for flue gas purification system |
| CN109908757A (en) * | 2019-04-18 | 2019-06-21 | 国电环境保护研究院有限公司 | A kind of carbon base catalyst regenerating unit and regeneration method |
| CN114768887A (en) * | 2022-04-13 | 2022-07-22 | 成都达奇环境科技有限公司 | Catalyst washing and regenerating method for catalytic flue gas desulfurization device |
| CN114768887B (en) * | 2022-04-13 | 2024-01-26 | 成都达奇科技股份有限公司 | Catalyst washing and regenerating method for catalytic flue gas desulfurization device |
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Address after: 210000 Qixia, Jiangsu province Wen Dong Dong Road, No. 1, No. Applicant after: National Electric Science and Technology Research Institute Co., Ltd. Address before: 210000 Qixia, Jiangsu province Wen Dong Dong Road, No. 1, No. Applicant before: Guodian Science and Technology Research Institute |
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