CN208599490U - A kind of cement kiln SCR denitration device - Google Patents
A kind of cement kiln SCR denitration device Download PDFInfo
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- CN208599490U CN208599490U CN201821244545.7U CN201821244545U CN208599490U CN 208599490 U CN208599490 U CN 208599490U CN 201821244545 U CN201821244545 U CN 201821244545U CN 208599490 U CN208599490 U CN 208599490U
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- pipeline
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- scr denitration
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Abstract
The utility model relates to a kind of cement kiln SCR denitration devices, including reducer feeding device, top cyclone cylinder, first pipe, second pipe, third pipeline, the 4th pipeline, the 5th pipeline, SP boiler, conditioning Tower, high-temperature blower, raw material silo feeding device, deduster, SCR reactor and material conveyor；The utility model, which is gathered dust cement kiln exit gas, is melted into the low cloud of dust gas of high temperature, helps to improve SCR denitration device and uses the service life of catalyst, and then greatly improve denitration efficiency, without frequent more catalyst changeout, significantly reduces denitration cost.
Description
Technical field
The utility model relates to a kind of cement kiln SCR denitration devices.
Background technique
The technology that cement kiln reduces nitrogen oxides at present mainly has: fractional combustion denitration technology, SNCR denitration technology, this two
Kind technology is unable to satisfy the minimum discharge (50mg/Nm3 or less) of cement kiln nitrogen oxides.
Now, be widely used, the method that denitration efficiency is high, denitration effect is good is SCR denitration technology, SCR denitration technology exists
300~400 DEG C of denitration effects of power plant exhaust temperature are preferable, are avoided that ammonia synthesizes ammonium hydrogen sulfate with sulfur dioxide and crystallizes, effectively
It reduces and even avoids ammonium hydrogen sulfate blocking catalyst reactor.
The flue gas that cyclone cylinder comes out at the top of from cement kiln, general amount of nitrogen oxides are 500mg/Nm3More than, if in time
Using SNCR denitration technology, amount of nitrogen oxides is generally also in 300mg/Nm3More than, it is not able to satisfy as defined in environmental regulation
100mg/Nm3 hereinafter, and dust concentration it is also higher, easily cause in SCR denitration technology use process catalyst blockage to inactivate, into
And denitration efficiency is caused to decline to a great extent, need frequently more catalyst changeout that can keep higher denitration effect, so that denitration cost is big
Width increases, and needs further improvement.
Utility model content
In view of the above-mentioned state of the art, the technical problem to be solved by the utility model is to provide one kind to facilitate
It improves SCR denitration device and uses the service life of catalyst, and then greatly improve denitration efficiency, without frequent more catalyst changeout, substantially
Reduce the cement kiln SCR denitration device of denitration cost.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of cement kiln SCR denitration device, packet
Include reducer feeding device, top cyclone cylinder, first pipe, second pipe, third pipeline, the 4th pipeline, the 5th pipeline, SP pots
Furnace, conditioning Tower, high-temperature blower, raw material silo feeding device, deduster, SCR reactor and material conveyor, which is characterized in that institute
The input end for stating top cyclone cylinder is connected with reducer feeding device；The first pipe is connected on the outlet end of the top cyclone cylinder
Road, the other end of the first pipe are connected with third pipeline and the 4th pipeline respectively, the other end and SP of the third pipeline
The input end of boiler is connected, and the other end of the 4th pipeline is connected with the input end of conditioning Tower, the SP boiler and conditioning Tower
Outlet end is connected after merging with the input end of high-temperature blower, and one end of the second pipe is connected in first pipe, and described the
The other end of two pipelines is connected with the air inlet of deduster, and the gas outlet of the deduster is connected with the air inlet of SCR reactor,
One end of 5th pipeline is connected with the gas outlet of SCR reactor, and the other end of the 5th pipeline is connected to first pipe
On；The cinder-discharging port of the deduster and SCR reactor is connected with the feed inlet of material conveyor, the discharging of the material conveyor
Mouth is connected with the entrance of raw material silo feeding device.
Preferably, the first louver valve is additionally provided on the third pipeline.
Preferably, the second louver valve is additionally provided on the 4th pipeline.
Preferably, be additionally provided with third louver valve in the first pipe, the third louver valve be located at second pipe and
Between 5th pipeline and the junction of first pipe.
Preferably, the 5th louver valve is additionally provided on the 5th pipeline.
Preferably, the 4th louver valve is additionally provided on the second pipe.
Compared with the prior art, the advantages of the utility model are: the utility model receives cement kiln exit gas
Dirt is melted into the low cloud of dust gas of high temperature, helps to improve SCR denitration device and uses the service life of catalyst, and then greatly improves denitration effect
Rate significantly reduces denitration cost without frequent more catalyst changeout.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model.
Specific embodiment
As shown in Figure 1, a kind of cement kiln SCR denitration device, including reducer feeding device 1, top cyclone cylinder 2, first
Pipeline 15, second pipe 16, third pipeline 17, the 4th pipeline 18, the 5th pipeline 19, SP boiler 9, conditioning Tower 11, high-temperature blower
12, raw material silo feeding device 13, deduster 5, SCR reactor 6 and material conveyor 14, the input end of top cyclone cylinder 2 with also
Former agent feeding device 1 is connected；First pipe 15, the other end point of first pipe 15 are connected on the outlet end of top cyclone cylinder 2
It is not connected with third pipeline 17 and the 4th pipeline 18, the other end of third pipeline 17 is connected with the input end of SP boiler 9, the 4th pipe
The other end in road 18 is connected with the input end of conditioning Tower 11, SP boiler 9 merge with 11 outlet end of conditioning Tower after with high-temperature blower 12
Input end be connected, one end of second pipe 16 is connected in first pipe 15, the other end of second pipe 16 and deduster 5
Air inlet is connected, and the gas outlet of deduster 5 is connected with the air inlet of SCR reactor 6, and one end of the 5th pipeline 19 is reacted with SCR
The gas outlet of device 6 is connected, and the other end of the 5th pipeline 19 is connected in first pipe 15；Deduster 5 and SCR reactor 6 unload
Grey mouth is connected with the feed inlet of material conveyor 14, the entrance phase of the discharge port and raw material silo feeding device 13 of material conveyor 14
Even, it is additionally provided with the first louver valve 8 on third pipeline 17, is additionally provided with the second louver valve 10, first pipe on the 4th pipeline 18
Third louver valve 3 is additionally provided on 15, third louver valve 3 is located at the company of second pipe 16 and the 5th pipeline 19 and first pipe 15
Between connecing；It is additionally provided with the 5th louver valve 7 on 5th pipeline 19, the 4th louver valve 4 is additionally provided on second pipe 16；First
Louver valve 8, the second louver valve 10, third louver valve 3, the 4th louver valve 4 and the 5th louver valve 7 play control pipeline on-off
Effect.
Handling principle: the 4th louver valve 4 of third louver valve 3, the 5th louver valve 7, the first louver valve 8 and the second blinds are opened
Valve 10 is closed, and the flue gas come out from 2 outlet end of top cyclone cylinder enters in deduster 5 via second pipe 16 to be dusted,
To which the exhaust gas dustiness for coming out top cyclone cylinder 2 is down to 30mg/Nm3 or so, then flue gas enters the progress of SCR reactor 6
Denitration, low dust flue gas extend SCR denitration catalyst life substantially, it is ensured that the higher denitration effect of SCR denitration technology
Amount of nitrogen oxides can be down to 100mg/Nm3 or less even 50mg/Nm3 or less by rate；The ash material warp that dedusting and denitration generate
It is transported in raw material silo feeding device 13 by material conveyor 14；The flue gas handled through SCR reactor 6 is in high-temperature blower 12
Wind-force effect under return in first pipe 15 and have respectively entered SP boiler 9 and conditioning Tower 11 via the 5th pipeline 19, SP pots
The setting of furnace 9, which is avoided, causes 12 stop jumping of high-temperature blower due to dust content increases suddenly in exhaust gas, and conditioning Tower 11 reduces useless
Specific resistance value in gas, and increase the moisture content of flue gas；By SP boiler 9 and conditioning Tower 11 treated after flue gas converges through by
High-temperature blower 12 is discharged to external feed mill.
The flue gas that cyclone cylinder comes out at the top of from cement kiln, general amount of nitrogen oxides are 500mg/Nm3More than, if in time
Using SNCR denitration technology, amount of nitrogen oxides is generally also in 300mg/Nm3More than, it is not able to satisfy as defined in environmental regulation
100mg/Nm3 hereinafter, and dust concentration it is also higher, easily cause in SCR denitration technology use process catalyst blockage to inactivate, into
And denitration efficiency is caused to decline to a great extent, need frequently more catalyst changeout that can keep higher denitration effect, so that denitration cost is big
Width increases；The utility model, which is gathered dust cement kiln exit gas, is melted into the low cloud of dust gas of high temperature, helps to improve SCR denitration
Device uses the service life of catalyst, and then greatly improves denitration efficiency, without frequent more catalyst changeout, significantly reduce denitration at
This.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to
It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is replaced on an equal basis
It changes；And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (6)
1. a kind of cement kiln SCR denitration device, including reducer feeding device, top cyclone cylinder, first pipe, second pipe,
Third pipeline, the 4th pipeline, the 5th pipeline, SP boiler, conditioning Tower, high-temperature blower, raw material silo feeding device, deduster, SCR are anti-
Answer device and material conveyor, which is characterized in that the input end of the top cyclone cylinder is connected with reducer feeding device；The top
Be connected with first pipe on the outlet end of portion's cyclone cylinder, the other end of the first pipe respectively with third pipeline and the 4th pipeline
It is connected, the other end of the third pipeline is connected with the input end of SP boiler, the other end of the 4th pipeline and conditioning Tower
Input end is connected, and the SP boiler is connected after merging with conditioning Tower outlet end with the input end of high-temperature blower, the second pipe
One end be connected in first pipe, the other end of the second pipe is connected with the air inlet of deduster, the deduster
Gas outlet is connected with the air inlet of SCR reactor, and one end of the 5th pipeline is connected with the gas outlet of SCR reactor, described
The other end of 5th pipeline is connected in first pipe；The cinder-discharging port and material conveyor of the deduster and SCR reactor
Feed inlet is connected, and the discharge port of the material conveyor is connected with the entrance of raw material silo feeding device.
2. a kind of cement kiln SCR denitration device according to claim 1, which is characterized in that also set on the third pipeline
It is equipped with the first louver valve.
3. a kind of cement kiln SCR denitration device according to claim 1, which is characterized in that also set on the 4th pipeline
It is equipped with the second louver valve.
4. a kind of cement kiln SCR denitration device according to claim 1, which is characterized in that also set in the first pipe
It is equipped with third louver valve, the third louver valve is between second pipe and the 5th pipeline and the junction of first pipe.
5. a kind of cement kiln SCR denitration device according to claim 1, which is characterized in that also set on the 5th pipeline
It is equipped with the 5th louver valve.
6. a kind of cement kiln SCR denitration device according to claim 1, which is characterized in that also set on the second pipe
It is equipped with the 4th louver valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821244545.7U CN208599490U (en) | 2018-08-03 | 2018-08-03 | A kind of cement kiln SCR denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821244545.7U CN208599490U (en) | 2018-08-03 | 2018-08-03 | A kind of cement kiln SCR denitration device |
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| Publication Number | Publication Date |
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| CN208599490U true CN208599490U (en) | 2019-03-15 |
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| CN201821244545.7U Active CN208599490U (en) | 2018-08-03 | 2018-08-03 | A kind of cement kiln SCR denitration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021109448A1 (en) * | 2019-12-02 | 2021-06-10 | 南京凯盛国际工程有限公司 | Self-resolving scr denitration system |
-
2018
- 2018-08-03 CN CN201821244545.7U patent/CN208599490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021109448A1 (en) * | 2019-12-02 | 2021-06-10 | 南京凯盛国际工程有限公司 | Self-resolving scr denitration system |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Zhongcai International Intelligent Technology Co.,Ltd. Address before: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING KISEN INTERNATIONAL ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |