CN205550045U - But SCR reactor of deashing - Google Patents
But SCR reactor of deashing Download PDFInfo
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- CN205550045U CN205550045U CN201620266147.XU CN201620266147U CN205550045U CN 205550045 U CN205550045 U CN 205550045U CN 201620266147 U CN201620266147 U CN 201620266147U CN 205550045 U CN205550045 U CN 205550045U
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Abstract
The utility model provides a but SCR reactor of deashing, includes entry flue, reactor casing, ash bucket, exhaust pass, its characterized in that: entry flue, reactor casing, ash bucket, exhaust pass loop through the expansion joint and connect, inside rectification grid, the catalyst platform of being provided with of reactor casing, reactor casing outside is provided with eccentric motor, pressure transmitter, eccentric motor links to each other with the catalyst platform pressure transmitter sets up in catalyst platform lower part, the bottom of ash bucket is provided with manual valve, the star type batcher pulled of discharge dust. The utility model discloses can realize automatic deashing under normal denitration operating mode, deashing coverage area is big, no high temperature, no dead angle, effectively improves denitration efficiency, has lengthened the life of catalyst simultaneously.
Description
Technical field
This utility model relates to a kind of equipment for denitrifying flue gas, be specifically related to a kind of can the SCR reactor of deashing.
Background technology
Catalysts selective reduction denitration (SCR) method, for denitrating flue gas, has the advantage that denitration efficiency is high, stability is strong, adaptability is good, is now widely used in fixed source pollution thing and controls, and its principle is, utilizes reducing agent NH3, under catalyst action, the NOx in flue gas is reduced to N2Removing, makes gas cleaning.Catalyst is the core of SCR, but owing to often containing a large amount of flying dust in flue gas, easily makes catalyst inactivate because of dust stratification to a certain extent, reduces the denitration efficiency of SCR.
Conventional catalyst purge mode is sonic soot blowing and steam soot blowing.Sonic soot blowing technology is compressed air (or steam) to be converted into high-power sound wave send in reactor, when the dust stratification on catalyst repeatedly drawn by with the dilatational wave of certain frequency alternate, pressure effect time, loosen because of fatigue and come off, take away with flue gas stream.But sonic soot blowing needs to be equipped with air compression station, and equipment one-time investment is big, the shortcomings such as also energy is less, and operating distance is limited.Steam soot blowing uses steam to do sootblowing dielectric, consumes that quantity of steam is big, soot blowing process affects catalyst service life.
Summary of the invention
For solving the problems referred to above, this utility model provide one can automatic ash removing, and deashing area coverage is big, without high temperature, without the scheme at dead angle.
This utility model uses following scheme: a kind of can the SCR reactor of deashing, including gas approach, reactor shell, ash bucket, exhaust pass, gas approach, reactor shell, ash bucket, exhaust pass pass sequentially through expansion joint and connect；Reactor shell is internally provided with flow straightening grid, catalyst platform, and reactor enclosure external body is provided with eccentric motor, pressure transmitter, and eccentric motor is connected with catalyst platform, and pressure transmitter is arranged on catalyst platform bottom；The bottom of ash bucket be provided with discharge dust manually pull valve, star-shaped feeding machine.
Preferably, a kind of can the expansion joint of SCR reactor of deashing be type metal expansion joint.
Preferably, a kind of can deashing SCR reactor catalyst platform use " 2+1 " or " 3+1 " arrange；Wherein " 2+1 " is 2 layers and comes into operation, and 1 layer standby, and " 3+1 " is 3 layers and comes into operation, and 1 layer standby.
Preferably, a kind of can frequency 20-100Hz of eccentric motor of SCR reactor of deashing.
Preferably, a kind of can deashing SCR reactor catalyst platform on be equipped with catalyst,
For one or several in card catalyst, flat board catalyst, honeycomb catalyst.
This utility model detects catalyst dust stratification situation by pressure transmitter, according to dust stratification situation eccentric adjustment electric machine frequency, the vibration utilizing eccentric motor to produce passes to catalyst, the dust stratification in catalyst pores is made to shake, by the produced stress of expansion joint buffer mechanism vibration, guarantee equipment normally uses.
Vibration cleaning is compared to the advantage of steam soot blowing and sonic soot blowing: (1) simple in construction, and installation difficulty is low, it is not necessary to the auxiliary equipment such as high steam and high pressure tank, pipeline etc.；(2) can work deashing continuously, it is not necessary to waits dust stratification to a certain extent, Z can be continuously maintained catalyst clean；(3) frequency of vibration and adjustable amplitude joint, can load corresponding vibration pattern to reach good ash-removal effect according to concrete flue dust and equipment situation, can tackle the various working of change in subsequent use flexibly；(4) eccentric motor is connected with catalyst platform and can produce the vibration of various dimensions, and ash-removal effect can each corner of covering catalyst.
By the enforcement of technique scheme, this utility model provides the benefit that, flue gas carries out denitration reaction in the reactor, catalyst dust stratification is detected by pressure transmitter, eccentric motor regulates vibration mode according to catalyst dust stratification situation, certain frequency vibration is passed to catalyst platform, and on platform, therefore catalyst produces slight vibration, thus reaches deashing optimum efficiency.This utility model in normal denitration situation simultaneously, can automatic ash removing continuously, and deashing area coverage greatly, without high temperature, without dead angle, denitration efficiency can be effectively improved, extend the replacement cycle of catalyst.
Accompanying drawing explanation
Fig. 1 is that this utility model is a kind of can the SCR reactor schematic diagram of deashing；
Wherein: 1 gas approach, 2 expansion joints, 3 flow straightening grids, 4 eccentric motors, 5 reactor shell, 6 pressure transmitters, 7 catalyst platform, 8 ash buckets, 9 manually pull valve, 10 star-shaped feeding machines, 11 catalyst, 12 exhaust pass.
Detailed description of the invention
Come below in conjunction with the accompanying drawings carefully to illustrate the technical solution of the utility model:
A kind of can the SCR reactor of deashing, including gas approach 1, reactor shell 5, ash bucket 8, exhaust pass 11, gas approach 1, reactor shell 5, ash bucket 8, exhaust pass 11 pass sequentially through expansion joint 2 and connect；Reactor shell 5 is internally provided with flow straightening grid 3, catalyst platform 7, and reactor shell 5 is outside is provided with eccentric motor 4, pressure transmitter 6, and eccentric motor 4 is connected with catalyst platform 7, and pressure transmitter 6 is arranged on catalyst platform 7 bottom；The bottom of ash bucket 8 be provided with discharge dust manually pull valve 9, star-shaped feeding machine 10.
This utility model a kind of can deashing SCR reactor work time:
The flue gas drawn from boiler is by entering the catalyst 11 placed on reactor shell, flue gas and catalyst platform 7 and spraying into the reducing agent NH of reactor after gas approach 1 rectified grid 3 rectification3Reacting, the NOx in flue gas is reduced to N2 and removes, and clean flue gas returns to boiler by exhaust pass 12.Continuation along with reaction, flow through the flue gas of catalyst 11 the more, flying dust in flue gas can be deposited in catalyst 11 hole, pressure transmitter 6 detects setting pressure reduction, eccentric motor 4 regulates frequency of vibration according to pressure reduction, vibration is passed on catalyst platform 7, thus cause catalyst 11 slight vibration on platform, dust stratification is made to shake, flue gas flow direction or action of gravity entrance ash bucket 8, when the dust stratification in ash bucket 8 reaches a certain amount of, open and manually pull valve 9 and star-shaped feeding machine 10, dust stratification is discharged and transports.
Claims (5)
1. one kind can the SCR reactor of deashing, including gas approach (1), reactor shell (5), ash bucket (8), exhaust pass (12), it is characterised in that: described gas approach (1), reactor shell (5), ash bucket (8), exhaust pass (12) pass sequentially through expansion joint (2) and connect；Described reactor shell (5) is internally provided with flow straightening grid (3), catalyst platform (7), described reactor shell (5) is outside is provided with eccentric motor (4), pressure transmitter (6), described eccentric motor (4) is connected with catalyst platform (7), and described pressure transmitter (6) is arranged on catalyst platform (7) bottom；The bottom of described ash bucket (8) be provided with discharge dust manually pull valve (9), star-shaped feeding machine (10).
The most according to claim 1 a kind of can the SCR reactor of deashing, it is characterised in that: described expansion joint (2) is type metal expansion joint.
The most according to claim 1 a kind of can the SCR reactor of deashing, it is characterised in that: described catalyst platform (7) uses " 2+1 " or " 3+1 " mode to arrange；Described " 2+1 " is 2 layers and comes into operation, and 1 layer standby, and described " 3+1 " is 3 layers and comes into operation, and 1 layer standby.
The most according to claim 1 a kind of can the SCR reactor of deashing, it is characterised in that: frequency 20-100Hz of described eccentric motor (4).
5. according to claim 1-4 arbitrary described a kind of can the SCR reactor of deashing, it is characterized in that: be equipped with catalyst (11) on described catalyst platform (7), described catalyst (11) is one or several in card catalyst, flat board catalyst, honeycomb catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620266147.XU CN205550045U (en) | 2016-04-03 | 2016-04-03 | But SCR reactor of deashing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620266147.XU CN205550045U (en) | 2016-04-03 | 2016-04-03 | But SCR reactor of deashing |
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| Publication Number | Publication Date |
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| CN205550045U true CN205550045U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620266147.XU Active CN205550045U (en) | 2016-04-03 | 2016-04-03 | But SCR reactor of deashing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201533A (en) * | 2019-04-26 | 2019-09-06 | 华电电力科学研究院有限公司 | A kind of clear ash exhauster of SCR denitration system catalyst and its working method |
-
2016
- 2016-04-03 CN CN201620266147.XU patent/CN205550045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201533A (en) * | 2019-04-26 | 2019-09-06 | 华电电力科学研究院有限公司 | A kind of clear ash exhauster of SCR denitration system catalyst and its working method |
| CN110201533B (en) * | 2019-04-26 | 2024-01-23 | 华电电力科学研究院有限公司 | SCR denitration system catalyst ash removal and discharge device and working method thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |