CN204170600U - The flue gas purification system of a kind of NOx, dioxin backflow - Google Patents
The flue gas purification system of a kind of NOx, dioxin backflow Download PDFInfo
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- CN204170600U CN204170600U CN201420598411.0U CN201420598411U CN204170600U CN 204170600 U CN204170600 U CN 204170600U CN 201420598411 U CN201420598411 U CN 201420598411U CN 204170600 U CN204170600 U CN 204170600U
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Abstract
The utility model provides a kind of NO
x, dioxin backflow flue gas purification system, reduce denitrating flue gas treating capacity, reduce the heat that heating needs containing NOX flue gas, improve dioxin removal efficiency simultaneously, reduce adsorbing medium consumption, the efficiency of dust collection of flue gas can also be improved.Greatly reduce energy resource consumption and system cloud gray model expense, decrease equipment investment scale, solve day by day serious NO
x, dioxin contamination and problem of resource waste, it is characterized in that: it comprises NO
x, dioxin enriching apparatus, described NO
x, dioxin enriching apparatus comprise gas approach, exhanst gas outlet, heat medium import, Crude product input, cooling medium inlet, cooling medium outlet, reaction tower connects described gas approach by deduster, described exhanst gas outlet connects chimney by smoke exhaust fan, described Crude product input connects incinerator, is connected ammonia blender between described Crude product input with described incinerator.
Description
Technical field
The utility model relates to the technical field of combustion product gases process, is specially a kind of NO
x, dioxin backflow flue gas purification system and method.
Background technology
Burn away the refuse and can produce a large amount of sour gas and dioxin, can badly influence the living environment of people, dioxin contamination thing toxicity is wherein larger, and it is one-level carcinogenic substance.Current waste incinerated smoke purification system process chloride, sulfide etc. mainly adopt lime and its reaction to generate solid salts substances, eliminate chloride, sulfide etc.; Process dioxin is substantially all adopt activated carbon pulvis to adsorb it, removes dioxin.Enter deduster dedusting after both mixing, the flue gas after dedusting heats, and then enters SCR reactor, removes the NO in flue gas under the effect of SCR catalyst
x.
Because activated carbon pulvis sprays in the flue gas containing volume of smoke by pipeline, activated carbon pulvis and flue gas mixture homogeneity, directly can affect the adsorption rate of dioxin, and deposit in case at volume of smoke, activated carbon pulvis absorption property can decline greatly.For improving dioxin removal efficiency, excessively spray into a large amount of activated carbon pulvis, dioxin removal efficiency does not also promote how many.The activated carbon pulvis sprayed into is removed by deduster together with flue dust, and activated carbon pulvis mixes with flue dust and can not recycle, and abandons the valuable resource of waste in vain.The dioxin of absorption does not disappear, and deals with improperly and can cause secondary pollution.In addition, heating is containing NO
xflue gas need high temperature heat source, and flue gas flow is larger, and energy resource consumption is just very large, and system cloud gray model expense is quite high, and apply very difficult, denitration utilization rate is lower, has a strong impact on NO
xreduction of discharging.
In recent years, along with China's garbage burning factory build in a large number and Public environmental attitude, troxerutine tabtets improve constantly with National Environmental management increasingly strict, the pollution problem of flue gas of refuse burning receives the concern of the whole society day by day, has influence on the development of waste incineration industry.
Summary of the invention
For existing the problems referred to above, the utility model provides a kind of NO
x, dioxin backflow flue gas purification system, reduce denitrating flue gas treating capacity, reduce heating containing NO
xthe heat that flue gas needs, improves dioxin removal efficiency simultaneously, reduces adsorbing medium consumption, can also improve the efficiency of dust collection of flue gas.Greatly reduce energy resource consumption and system cloud gray model expense, decrease equipment investment scale, solve day by day serious NO
x, dioxin contamination and problem of resource waste.
Its technical scheme is such, a kind of NO
x, dioxin backflow flue gas purification system, it is characterized in that: it comprises NO
x, dioxin enriching apparatus, described NO
x, dioxin enriching apparatus comprise gas approach, exhanst gas outlet, heat medium import, Crude product input, cooling medium inlet, cooling medium outlet, reaction tower connects described gas approach by deduster, described exhanst gas outlet connects chimney by smoke exhaust fan, described Crude product input connects incinerator, is connected ammonia blender between described Crude product input with described incinerator.
It is further characterized in that: described cooling medium outlet connects heat medium import, described cooling medium outlet is connected described heat medium import by blower fan with heater successively, described NO
x, dioxin enriching apparatus comprises casing, rotating cylinder is provided with in described casing, described gas approach, heat medium import and cooling medium inlet to be arranged on described casing inside described rotating cylinder, described exhanst gas outlet, Crude product input, cooling medium outlet to be separately positioned on described casing outside described rotating cylinder, seal diaphragm is provided with in described casing, casing isolation is formed adsorption zone by described seal diaphragm, desorption zone, cooling zone, described gas approach and described exhanst gas outlet are arranged in described adsorption zone, described heat medium import and described Crude product input are arranged in described desorption zone, described cooling medium inlet and the outlet of described cooling medium are arranged in described cooling zone, described rotating cylinder runs through described seal diaphragm and can rotate in described casing, described rotating cylinder comprises internal layer orifice plate and outer orifice, absorptive media layers is filled with between described internal layer orifice plate and described outer orifice.
In said system of the present utility model, NO
x, dioxin enriching apparatus comprises gas approach, exhanst gas outlet, heat medium import, Crude product input, cooling medium inlet, cooling medium exports, reaction tower connects described gas approach by deduster, described exhanst gas outlet connects chimney by smoke exhaust fan, described Crude product input connects incinerator, ammonia blender is connected between described Crude product input with described incinerator, first flue gas of refuse burning fully mixes with lime and reacts in reaction tower, eliminate chloride, the materials such as sulfide, then deduster dedusting is entered, NO is entered after flue gas ash removal
x, two dislike enriching apparatus flue gases at NO
x, dioxin enriching apparatus realize be separated, containing NO
x, dioxin concentration flue gas up to standard directly gets rid of from chimney, passes through NO
x, after the process of dioxin enriching apparatus containing NO
x, after dioxin gas mixes with ammonia, send into incinerator, make NO
x, dioxin is back to incinerator.Under incinerator hot environment, the NO in gas
xwith ammonia generation reduction reaction, generate N
2, H
2o, simultaneously pyrolytic dioxin, final nitrogen oxide and the dioxin eliminating backflow, because in native system, flue gas passes through NO
x, dioxin enriching apparatus carries out enrichment process, makes NO
x, dioxin is comparatively concentrated, improve containing NO
x, dioxin gas concentration, reduce containing NO
x, dioxin gas flow, improve denitration efficiency, dioxin removal efficiency and efficiency of dust collection, stopped the secondary pollution of dioxin to environment, reduced the concentration of emission of flue gas, save investment and operating cost thereof simultaneously, improve economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the utility model NO
x, dioxin backflow flue gas purification system schematic diagram;
Fig. 2 is NO
x, the main sectional view of dioxin enriching apparatus;
Fig. 3 is Fig. 2 left view.
Detailed description of the invention
See Fig. 1,
A kind of NO
x, dioxin backflow flue gas purification system, it comprises NO
x, dioxin enriching apparatus 1, NO
x, dioxin enriching apparatus 1 comprise gas approach 2, exhanst gas outlet 3, heat medium import 4, Crude product input 5, cooling medium inlet 6, cooling medium outlet 7, reaction tower 9 connects gas approach 2 by deduster 8, exhanst gas outlet 3 connects chimney 10 by smoke exhaust fan 12, Crude product input 5 connects incinerator 14, is connected ammonia blender 13 between Crude product input 5 with incinerator 14.
Cooling medium outlet 7 connects heat medium import 4, and refrigerating gas is at NO
x, heat up in dioxin enriching apparatus 1 after, using the refrigerating gas after heating as the source gas of heated air, define the circulation of cold and hot medium, improve the temperature of source gas, saved the energy, significantly reduce the consumption of energy, improve economic benefit.
See Fig. 2, Fig. 3,
NO
x, dioxin enriching apparatus 1 comprises casing 17, rotating cylinder 11 is provided with in casing 17, gas approach 2, heat medium import 4 and cooling medium inlet 6 to be arranged on casing 17 inside rotating cylinder 11, exhanst gas outlet 3, Crude product input 5, cooling medium outlet 7 to be separately positioned on casing 17 outside rotating cylinder 11, rotated by rotating cylinder 11, will containing NO after flue gas processes
x, dioxin concentration flue gas up to standard directly got rid of by chimney, comprises NO
x, dioxin gas, by rotating cylinder 18 rotate carry out NO
x, got rid of by Crude product input 5 after dioxin enrichment process.
Seal diaphragm 19 is provided with in casing 17, casing isolation is formed adsorption zone 20, desorption zone 21, cooling zone 22 by seal diaphragm 19, gas approach 2 and exhanst gas outlet 3 are arranged in adsorption zone 20, heat medium import 4 and Crude product input 5 to be arranged in desorption zone 21, cooling medium inlet 6 and cooling medium outlet 7 are arranged in cooling zone 22, rotating cylinder 11 runs through seal diaphragm 19 and can rotate in casing 17, rotating cylinder 11 comprises internal layer orifice plate 23-1 and outer orifice 23-2, be filled with absorptive media layers 18 between internal layer orifice plate 23-1 and outer orifice 23-2, flue gas is at NO
x, adsorption zone 20 in dioxin enriching apparatus 1 casing 17, desorption zone 21, carried out Adsorption and desorption, the cool cycles process of flue gas in cooling zone 22 by the rotation of rotating cylinder 11, realize the NO of flue gas
x, dioxin enrichment, afterwards again by after the process of dioxin enriching apparatus containing NO
x, after dioxin gas mixes with ammonia, send into incinerator, make NO
x, dioxin is back to incinerator.Under incinerator hot environment, the NO in gas
xwith ammonia generation reduction reaction, generate N
2, H
2o, simultaneously pyrolytic dioxin, final nitrogen oxide and the dioxin eliminating backflow.
Separate out NO
x, dioxin adsorbing medium must cool, just can adsorb next time.Pass into refrigerating gas to precipitation NO
x, dioxin adsorbing medium cool, the adsorbing medium after cooling is to the NO in flue gas
x, dioxin adsorbs again, discharge the refrigerating gas after by adsorbing medium heat temperature raising, achieve NO
x, dioxin circulation absorption.
See Fig. 1, Fig. 2, Fig. 3,
NO
x, dioxin backflow flue gas purifying method:
(1), flue gas enters in reaction tower 9 and fully mixes with lime and react, material such as elimination chloride, sulfide etc.;
(2) flue gas, after step (1) process carries out dust removal by filtration by deduster 8;
(3) flue gas, after dust removal by filtration sends into NO
x, dioxin enriching apparatus 1 carries out separating treatment, containing NO
x, dioxin concentration flue gas up to standard directly discharged from chimney 10 by smoke exhaust fan 12;
A, flue gas enter NO
x, in adsorption zone 20 in dioxin enriching apparatus 1, the absorptive media layers 18 on rotating cylinder 11 adsorbs the NO in flue gas
x, dioxin, containing NO
x, dioxin concentration flue gas up to standard directly discharged from chimney 10 by smoke exhaust fan 12;
B, rotating cylinder 11 rotate, and adsorb NO in rotating cylinder 11
x, dioxin part enter desorption zone 21, be adsorbed on the NO on adsorbing medium on rotating cylinder 11
x, dioxin heated up by heated air, the NO on adsorbing medium
x, dioxin is desorbed desorption, defines NO
x, dioxin enriched gas, containing NO
x, dioxin enriched gas get rid of from Crude product input 5, simultaneously refrigerating gas passes into NO
x, dioxin enriching apparatus 1 cooling zone 22 in, rotating cylinder 11 rotates, the adsorbing medium heated up in desorption zone 21 in rotating cylinder 11 rotates into cooling zone 22, cooled by refrigerating gas, adsorbing medium is lowered the temperature, and refrigerating gas heats up simultaneously, achieve the cooling of adsorbing medium, rotating cylinder 11 rotates, and the barrel sections after adsorbing medium cooling enters adsorption zone, completes Adsorption and desorption, cool cycles.
(4), NO is passed through
x, after dioxin enrichment process containing NO
x, dioxin enriched gas mix with ammonia after pass back in incinerator 14.
In the present embodiment,
Reaction tower 9 is tube structures, is mainly used in lime and chloride, sulfide fully react within it, removes chloride, sulfide.Reaction tower 9 is arranged in deduster upstream, and two imports are connected with incinerator, lime source respectively by pipeline, and its outlet is connected with deduster 8 by pipeline;
Deduster 8 is flue gas purifying equipments, and its inside is provided with dust arrester, carries out dedusting to the flue gas entered.Deduster 2 is arranged in reaction tower 9 and NO
x, between dioxin enriching apparatus 1, its import to be exported with reaction tower 9 by pipeline and is connected, exports by pipeline and NO
x, dioxin enriching apparatus 1 gas approach 2 is connected;
Smoke exhaust fan 12 provides power for the flowing of system flue gas.Smoke exhaust fan 12 is arranged in NO
x, between dioxin enriching apparatus 1 and chimney 10, import is by pipeline and NO
x, dioxin enriching apparatus 1 exhanst gas outlet 3 is connected, its outlet is connected with chimney 10 bottom inlet by pipeline;
Chimney 10 is cylindrical structures.After chimney 10 is arranged in smoke exhaust fan 12, lower inlet to be exported with smoke exhaust fan 12 by pipeline and is connected, and top exhaust outlet is communicated with air;
Air exhauster 15 provides power for the flowing of hot and cold gas.Air exhauster 15 is arranged in NO
x, between dioxin enriching apparatus 1 and heater 16, its import is by pipeline and NO
x, dioxin enriching apparatus 1 cooling medium outlet 7 be connected, its outlet is connected with heater 16 import by pipeline;
Heater 16 is firing equipments, heats heated air.Its import to be exported with air exhauster 15 by pipeline and is connected, and exports by pipeline and NO
x, dioxin enriching apparatus 1 heat medium import 4 is connected;
Ammonia blender 13 passes into ammonia and mixes with compressed air, then enters containing NO
x, fully mix with it in dioxin gas.Ammonia blender 13 compressed air inlet, ammonia import are connected with respective source of the gas respectively by pipeline, and its outlet is by pipeline and NO
x, dioxin enriching apparatus 1 Crude product input 5, incinerator 14 be connected.
Claims (4)
1. a NO
x, dioxin backflow flue gas purification system, it is characterized in that: it comprises NO
x, dioxin enriching apparatus, described NO
x, dioxin enriching apparatus comprise gas approach, exhanst gas outlet, heat medium import, Crude product input, cooling medium inlet, cooling medium outlet, reaction tower connects described gas approach by deduster, described exhanst gas outlet connects chimney by smoke exhaust fan, described Crude product input connects incinerator, is connected ammonia blender between described Crude product input with described incinerator.
2. the flue gas purification system of a kind of NOX according to claim 1, dioxin backflow, is characterized in that: described cooling medium outlet connects heat medium import.
3. the flue gas purification system of a kind of NOX according to claim 2, dioxin backflow, is characterized in that: described cooling medium outlet is connected described heat medium import by blower fan with heater successively.
4. according to the arbitrary described a kind of NOX of claim 1-3, the flue gas purification system of dioxin backflow, it is characterized in that: described NOX, dioxin enriching apparatus comprises casing, rotating cylinder is provided with in described casing, described gas approach, heat medium import and cooling medium inlet to be arranged on described casing inside described rotating cylinder, described exhanst gas outlet, Crude product input, cooling medium outlet to be separately positioned on described casing outside described rotating cylinder, seal diaphragm is provided with in described casing, casing isolation is formed adsorption zone by described seal diaphragm, desorption zone, cooling zone, described gas approach and described exhanst gas outlet are arranged in described adsorption zone, described heat medium import and described Crude product input are arranged in described desorption zone, described cooling medium inlet and the outlet of described cooling medium are arranged in described cooling zone, described rotating cylinder runs through described seal diaphragm and can rotate in described casing, described rotating cylinder comprises internal layer orifice plate and outer orifice, absorptive media layers is filled with between described internal layer orifice plate and described outer orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598411.0U CN204170600U (en) | 2014-10-16 | 2014-10-16 | The flue gas purification system of a kind of NOx, dioxin backflow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598411.0U CN204170600U (en) | 2014-10-16 | 2014-10-16 | The flue gas purification system of a kind of NOx, dioxin backflow |
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| CN204170600U true CN204170600U (en) | 2015-02-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307322A (en) * | 2014-10-16 | 2015-01-28 | 无锡雪浪环境科技股份有限公司 | Flue gas cleaning system for preventing NOx and dioxin from reflowing and method thereof |
| CN111841298A (en) * | 2020-07-06 | 2020-10-30 | 安徽绿能技术研究院有限公司 | Enameled wire pyrolysis waste gas treatment process |
-
2014
- 2014-10-16 CN CN201420598411.0U patent/CN204170600U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307322A (en) * | 2014-10-16 | 2015-01-28 | 无锡雪浪环境科技股份有限公司 | Flue gas cleaning system for preventing NOx and dioxin from reflowing and method thereof |
| CN111841298A (en) * | 2020-07-06 | 2020-10-30 | 安徽绿能技术研究院有限公司 | Enameled wire pyrolysis waste gas treatment process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 214000 no.2020 Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province Patentee after: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 214128, Wuxi, Jiangsu province Binhu District Taihu Street double new economic Park Patentee before: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |