CN210584498U - Cement kiln flue gas denitration ultralow emission process system - Google Patents
Cement kiln flue gas denitration ultralow emission process system Download PDFInfo
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- CN210584498U CN210584498U CN201921488933.4U CN201921488933U CN210584498U CN 210584498 U CN210584498 U CN 210584498U CN 201921488933 U CN201921488933 U CN 201921488933U CN 210584498 U CN210584498 U CN 210584498U
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- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model discloses a cement kiln flue gas denitration minimum discharge process systems, including high-efficient cyclone, high-efficient cyclone's air inlet and high-dust flue gas pipeline's exit end intercommunication, flue gas pipe connection to ceramic catalytic filtration reactor is passed through to high-efficient cyclone's gas outlet, flue gas pipe connection to waste heat recovery device is passed through to ceramic catalytic filtration reactor's the gas outlet of the pipeline of giving vent to anger, waste heat recovery device's gas outlet is connected to the roller through flue gas pipe connection, the gas outlet of roller is connected to ceramic filter tube dust remover through flue gas pipe connection, the gas outlet of ceramic filter tube dust remover passes through pipe connection to chimney, high-efficient cyclone and ceramic catalytic filtration reactor's bottom is equipped with the ash discharge mouth, the ash discharge mouth passes through the pipe-line transportation to the roller and grinds. The utility model discloses be applied to the ultralow environmental protection technical transformation field that discharges of cement kiln flue gas, can make the emission index of cement kiln flue gas NOx and particulate matter reach the requirement of ultralow emission index respectively.
Description
The technical field is as follows:
the utility model relates to a cement kiln flue gas emission purifies the field, mainly relates to a cement kiln flue gas denitration minimum discharge process systems.
Background art:
at present, the actual NOx emission concentration of dry-method cement enterprises is 500-1100 mg/Nm3, and some enterprises have over 1300mg/Nm3 in a certain time period. The main sources are three: 1, fuel type NOx: nitrogen oxides are generated by oxidizing nitrogen in fuel in a combustion process, the content of nitrogen in coal is generally about 0.5-2.5%, the nitrogen mainly exists in the form of organic nitrogen, the organic nitrogen is thermally cracked to generate intermediate product groups such as N, CN, HCN and the like, and then the intermediate product groups are oxidized to generate NOx; 2, thermal NOx: a great deal of thermal NOx is generated when the temperature of a burning zone in the cement kiln is higher than 1500 ℃; 3, rapid NOx: n in air2The amount of NOx formed rapidly in the vicinity of the reaction zone together with hydrocarbon radicals (CH, CH2, etc.) in the fuel is small, and generally accounts for 5% or less of the total NOx. At present, kiln flue gas of a cement plant has the characteristics of high NOx concentration, much dust, large flue gas amount and temperature change interval and the like, so that the traditional denitration and dedusting process cannot meet increasingly strict environmental protection standards, and the flue gas generated in the production process needs to be treated and purified.
The utility model has the following contents:
the utility model discloses the purpose is exactly in order to compensate prior art's defect, provides a cement kiln flue gas denitration minimum discharge process systems, can make the emission index of cement kiln flue gas NOx, particulate matter reach minimum discharge index's requirement, can be applied to cement kiln flue gas minimum discharge environmental protection technical transformation field.
The utility model discloses a realize through following technical scheme:
the utility model provides a cement kiln flue gas denitration minimum discharge process systems which characterized in that: including high-efficient cyclone, high-efficient cyclone's air inlet and the exit end intercommunication of high-dust flue gas pipeline, high-efficient cyclone's gas outlet passes through flue gas pipe connection to ceramic catalytic filtration reactor, ceramic catalytic filtration reactor's the gas outlet of giving vent to anger the pipeline and passes through flue gas pipe connection to waste heat recovery device, waste heat recovery device's gas outlet passes through flue gas pipe connection to the roller mill, the gas outlet of roller mill is connected to ceramic filter tube dust remover through flue gas pipe, the gas outlet of ceramic filter tube dust remover passes through pipe connection to chimney, the direct evacuation of the end of giving vent to anger of chimney, high-efficient cyclone and ceramic catalytic filtration reactor's bottom is equipped with the ash discharge mouth, the ash discharge mouth passes through the pipe-line and carries to the roller mill.
The cyclone dust collector, the ceramic catalytic filtering reactor and the ceramic filter tube dust collector are respectively connected with an automatic control system of the electric instrument in a control way.
And a plurality of ceramic catalytic filter tubes which are arranged in parallel at equal intervals are arranged in the ceramic catalytic filter reactor.
The bottom end of the ceramic filter tube dust remover is communicated with a slag discharge output pipeline.
The high-efficiency cyclone dust collector, the ceramic catalytic filtration reactor, the waste heat recovery device, the roller mill, the ceramic filter tube dust collector and the chimney are erected in a spatial structure, the roller mill and the chimney are directly installed on the ground, and the high-efficiency cyclone dust collector is located slightly below the ceramic catalytic filtration reactor.
The utility model has the advantages that:
the utility model has the advantages of reasonable design, the flue gas after the dust removal is through catalytic reaction device, is applicable to the operation of low temperature denitration among the cement kiln flue gas, and catalyst evenly distributed is on the ceramic fibre of labyrinth complicacy, and flue gas catalytic filtration is thorough, and the catalyst is difficult for producing to block up the poisoning, long service life, and denitration efficiency is high, can reach 99%; the flue gas after denitration passes through an ultralow-emission dust removal device, particulate matters are thoroughly filtered, and the filtering efficiency can reach 99.98%.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
see the drawings.
A cement kiln flue gas denitration dust removal ultralow emission process device comprises a high-efficiency cyclone dust collector 1, a ceramic catalytic filtration reactor 2 and a ceramic filter tube dust collector 5; a flue gas pipeline is connected between the high-efficiency cyclone dust collector 1 and the ceramic catalytic filtration reactor 2, flue gas is firstly subjected to pre-dedusting in the high-efficiency cyclone dust collector 1, a pipeline is connected between an outlet of the high-efficiency cyclone dust collector 1 and an inlet of the ceramic catalytic filtration reactor 2, a plurality of ceramic catalytic filtration tubes are arranged in the ceramic catalytic filtration reactor 2, an outlet of the ceramic catalytic filtration reactor 2 is connected with a waste heat recovery device 3 through a flue gas purification pipeline, and the waste heat recovery device 3 is connected with the roller mill through a flue; the roller mill outlet flue is connected to a ceramic filter tube dust remover 5, and the outlet of the ceramic filter tube dust remover 5 is connected with the inlet of a chimney 6 through a flue; residual ash generated by the high-efficiency dust removal device 1 and the ceramic catalytic filter reactor 2 is conveyed to the roller mill 4 through a pipeline; the high-efficiency cyclone dust collector 1, the ceramic catalytic filtration reactor 2 and the ceramic filter tube dust collector 5 are respectively connected with an electric instrument automatic control system phase in a control mode.
The high-efficiency cyclone dust collector 1, the ceramic catalytic filtration reactor 2, the waste heat recovery device 3, the roller mill 4, the ceramic filter tube dust collector 5 and the chimney 6 are erected in a spatial structure, the roller mill 4 and the chimney 6 are directly installed on the ground, and the high-efficiency cyclone dust collector is located slightly below the ceramic catalytic filtration reactor.
In the above structure:
the high-efficiency cyclone dust collector is a pre-dedusting reaction container, so that the content of particulate matters in high-dust flue gas can be reduced; the ceramic catalytic filtration reactor is used for purifying NOx flue gasThe reaction vessel has low-temperature catalytic denitration and high-efficiency dust removal performance and is mainly used for purifying NO in the flue gasX(ii) a The waste heat recovery device can recover the waste heat of the flue gas, then the flue gas and the residual dust are treated by the roller mill, and the ceramic filter tube dust remover is a reaction container for purifying particulate matters in the flue gas and has high-efficiency dust removal performance; the chimney is a clean smoke discharge port.
Claims (5)
1. The utility model provides a cement kiln flue gas denitration minimum discharge process systems which characterized in that: including high-efficient cyclone, high-efficient cyclone's air inlet and the exit end intercommunication of high-dust flue gas pipeline, high-efficient cyclone's gas outlet passes through flue gas pipe connection to ceramic catalytic filtration reactor, ceramic catalytic filtration reactor's the gas outlet of giving vent to anger the pipeline and passes through flue gas pipe connection to waste heat recovery device, waste heat recovery device's gas outlet passes through flue gas pipe connection to the roller mill, the gas outlet of roller mill is connected to ceramic filter tube dust remover through flue gas pipe, the gas outlet of ceramic filter tube dust remover passes through pipe connection to chimney, the direct evacuation of the end of giving vent to anger of chimney, high-efficient cyclone and ceramic catalytic filtration reactor's bottom is equipped with the ash discharge mouth, the ash discharge mouth passes through the pipe-line and carries to the roller mill.
2. The cement kiln flue gas denitration ultra-low emission process system as claimed in claim 1, wherein: the cyclone dust collector, the ceramic catalytic filtering reactor and the ceramic filter tube dust collector are respectively connected with an automatic control system of the electric instrument in a control way.
3. The cement kiln flue gas denitration ultra-low emission process system as claimed in claim 1, wherein: and a plurality of ceramic catalytic filter tubes which are arranged in parallel at equal intervals are arranged in the ceramic catalytic filter reactor.
4. The cement kiln flue gas denitration ultra-low emission process system as claimed in claim 1, wherein: the bottom end of the ceramic filter tube dust remover is communicated with a slag discharge output pipeline.
5. The cement kiln flue gas denitration ultra-low emission process system as claimed in claim 1, wherein: the high-efficiency cyclone dust collector, the ceramic catalytic filtration reactor, the waste heat recovery device, the roller mill, the ceramic filter tube dust collector and the chimney are erected in a spatial structure, the roller mill and the chimney are directly installed on the ground, and the high-efficiency cyclone dust collector is located slightly below the ceramic catalytic filtration reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488933.4U CN210584498U (en) | 2019-09-09 | 2019-09-09 | Cement kiln flue gas denitration ultralow emission process system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488933.4U CN210584498U (en) | 2019-09-09 | 2019-09-09 | Cement kiln flue gas denitration ultralow emission process system |
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| CN210584498U true CN210584498U (en) | 2020-05-22 |
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| CN201921488933.4U Active CN210584498U (en) | 2019-09-09 | 2019-09-09 | Cement kiln flue gas denitration ultralow emission process system |
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2019
- 2019-09-09 CN CN201921488933.4U patent/CN210584498U/en active Active
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