CN207605746U - A kind of catalyst heating regenerating unit - Google Patents
A kind of catalyst heating regenerating unit Download PDFInfo
- Publication number
- CN207605746U CN207605746U CN201721380423.6U CN201721380423U CN207605746U CN 207605746 U CN207605746 U CN 207605746U CN 201721380423 U CN201721380423 U CN 201721380423U CN 207605746 U CN207605746 U CN 207605746U
- Authority
- CN
- China
- Prior art keywords
- reactor
- boiler
- flue gas
- temperature flue
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 31
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 7
- 238000010438 heat treatment Methods 0.000 title abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003546 flue gas Substances 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 230000008676 import Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 4
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model provides a kind of catalyst heating regenerating unit, can avoid the problem of low temperature reduces the blocking of catalyst, activity, effectively prolongs the service life, reduce operating cost, improves denitration efficiency；It includes boiler and the reactor that is set in the boiler, the reactor at least there are two, first baffle is respectively set behind the door in reactor import and export end, it is correspondingly connected to low-temperature flue gas entrance, the low-temperature flue gas outlet of the boiler, the high-temperature flue gas entry of the boiler passes sequentially through the outlet end that the reactor is connected to after second baffle door, regulating valve.
Description
Technical field
The utility model is related to catalyst regeneration techniques field, specially a kind of catalyst heats regenerating unit.
Background technology
Catalyst is the capital equipment in SCR system, at be grouped as, structure, service life and relevant parameter directly affect and are
System denitration efficiency and operation conditions are transformed existing power plant's denitration, by the limitation in space and pipeline, used low temperature
Catalyst is easy to match with boiler system, small on the influence of other relevant apparatus, and building cost may make to be greatly lowered, but
Since low temperature catalyst is arranged in boiler or industrial furnace tail portion, the sulfur trioxide in flue gas sprays ammonia lattice with utilizing before this
The denitrification reducing agent gas ammonia that grid spray, at low temperature reaction form ammonium hydrogen sulfate, and can be adhered to catalyst surface keeps catalyst stifled
Plug reduces activity, so as to shorten the service life of catalyst, increases operating cost, denitration efficiency reduces.
Invention content
In view of the above-mentioned problems, the utility model provides a kind of catalyst heating regenerating unit, low temperature is can avoid to urging
The problem of blocking of agent, activity reduce, effectively prolongs the service life, and reduces operating cost, improves denitration efficiency.
Its technical solution is such comprising boiler and the reactor being set in the boiler, feature exist
In, the reactor at least there are two, first baffle is respectively set behind the door in reactor import and export end, is correspondingly connected to institute
Low-temperature flue gas entrance, the low-temperature flue gas outlet of boiler are stated, the high-temperature flue gas entry of the boiler passes sequentially through second baffle door, adjusts
The outlet end of the reactor is connected to after section valve.
It is further characterized by：
The reactor includes first reactor, second reactor, the first reactor, second reactor into and out of
The first baffle is respectively arranged behind the door in mouth end, is correspondingly connected to low-temperature flue gas entrance, the low-temperature flue gas outlet of the boiler,
The regulating valve includes the first regulating valve, the second regulating valve, and the outlet end of the first reactor passes through first regulating valve
It is connected to the second baffle door, the outlet end of the second reactor is connected to the second gear by second regulating valve
Plate door.
The utility model has the beneficial effects that when using low temperature catalyst denitration transformation, at least two are arranged in boiler
A reactor, can be respectively by opening or closing first baffle door, second baffle door, regulating valve, to realize that switching is different anti-
The exhaust gases passes of device are answered, high-temperature flue gas is then introduced to losing activity in reactor or amount of activated by high-temperature flue gas entry
Catalyst, the catalyst for adhering to ammonium hydrogen sulfate are heated, and realization is renewable, are restored catalyst activity, are avoided low temperature to urging
The problem of blocking of agent, activity reduce, effectively extends service life, reduces operating cost, improve denitration efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
As shown in Figure 1, the utility model includes boiler and the reactor that is set in boiler, reactor at least two
It is a, after first baffle door 1 is respectively set in reactor import and export end, it is correspondingly connected to low-temperature flue gas entrance, the low-temperature flue gas of boiler
Outlet, the high-temperature flue gas entry of boiler pass sequentially through the outlet end that reactor is connected to after second baffle door 2, regulating valve.
Specifically, reactor includes first reactor 3, second reactor 4, first reactor 3, second reactor 4 into,
After first baffle door 1 is respectively arranged in outlet end, it is correspondingly connected to low-temperature flue gas entrance, the low-temperature flue gas outlet of boiler, is adjusted
Valve includes the first regulating valve 5, the second regulating valve 6, and the outlet end of first reactor 3 is connected to second gear by the first regulating valve 5
The outlet end of plate door 2, second reactor 4 is connected to second baffle door 2 by the second regulating valve 6.
A kind of catalyst thermal regeneration methods, are reversible by the deposition in view of ammonium hydrogen sulfate, as long as by reactor
When interior running temperature promotion is to 180 DEG C or more, ammonium hydrogen sulfate will evaporate, and catalyst activity will restore, you can and realization is renewable,
Then by the renewable method, when being transformed using low temperature catalyst denitration, the limitation not by space and pipeline is realized, is easy to
It is matched with boiler system, small, the effect that building cost can be greatly lowered is influenced on other relevant apparatus, and can be again by heating
Raw low temperature catalyst, can maximum possible avoid low temperature to the blocking of catalyst and poison, substantially prolong making for catalyst
With the service life, reduces operating cost and frequent routine is safeguarded, and ensure that denitration efficiency.
Its regeneration method step is：
（1）, when catalyst blockage in first reactor 3, activity reduce, open second baffle door 2, the first regulating valve 5,
Close the first baffle door 1 at the import and export end of first reactor 3；And the second regulating valve 6 at second reactor 4 is closed, it opens
The first baffle door 1 at 4 import and export end of second reactor, flue gas flow to low-temperature flue gas outlet from second reactor 4, ensure boiler
Normal operation；
（2）, 420 DEG C of flue gas is drawn from high-temperature flue gas entry, introduced high-temperature flue gas is right in first reactor 3
It loses activity or the catalyst of amount of activated catalyst, adherency ammonium hydrogen sulfate carries out heating regeneration, promoted in first reactor 3
Running temperature, and it is maintained at 340 DEG C of temperature or more continuous heating 24min, ammonium hydrogen sulfate will evaporate, and catalyst activity restores, real
Show renewable；
（3）, when second reactor 4 is after running a period of time, there is same catalyst blockage, when activity reduces, weight
Multiple step（1）、（2）.
It is respectively arranged with thermocouple in first reactor 3, second reactor 4, to measure running temperature in reactor, to judge
Whether start and stop first baffle door 1；Boiler is connected with analyzer to show the exception of denitration efficiency value and catalyst pressure difference, to sentence
It is disconnected whether start and stop first baffle door 1, second baffle door 2, the first regulating valve 5, the second regulating valve 6, with switch first reactor 3,
The exhaust gases passes of second reactor 4 ensure boiler normal operation.
Claims (2)
1. a kind of catalyst heats regenerating unit comprising boiler and the reactor being set in the boiler, feature exist
In, the reactor at least there are two, first baffle is respectively set behind the door in reactor import and export end, is correspondingly connected to institute
Low-temperature flue gas entrance, the low-temperature flue gas outlet of boiler are stated, the high-temperature flue gas entry of the boiler passes sequentially through second baffle door, adjusts
The outlet end of the reactor is connected to after section valve.
2. a kind of catalyst according to claim 1 heats regenerating unit, which is characterized in that the reactor includes first
Reactor, second reactor, the first reactor, second reactor import and export end the first baffle is respectively set
Behind the door, be correspondingly connected to the boiler low-temperature flue gas entrance, low-temperature flue gas outlet, the regulating valve include the first regulating valve,
The outlet end of second regulating valve, the first reactor is connected to the second baffle door by first regulating valve, described
The outlet end of second reactor is connected to the second baffle door by second regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380423.6U CN207605746U (en) | 2017-10-25 | 2017-10-25 | A kind of catalyst heating regenerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380423.6U CN207605746U (en) | 2017-10-25 | 2017-10-25 | A kind of catalyst heating regenerating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207605746U true CN207605746U (en) | 2018-07-13 |
Family
ID=62793728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721380423.6U Expired - Fee Related CN207605746U (en) | 2017-10-25 | 2017-10-25 | A kind of catalyst heating regenerating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207605746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649185A (en) * | 2017-10-25 | 2018-02-02 | 无锡华光新动力环保科技股份有限公司 | A kind of catalyst thermal regeneration devices and methods therefor |
-
2017
- 2017-10-25 CN CN201721380423.6U patent/CN207605746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649185A (en) * | 2017-10-25 | 2018-02-02 | 无锡华光新动力环保科技股份有限公司 | A kind of catalyst thermal regeneration devices and methods therefor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |