CN208082232U - It is a kind of can on-line maintenance low temperature SCR denitration reactor - Google Patents
It is a kind of can on-line maintenance low temperature SCR denitration reactor Download PDFInfo
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- CN208082232U CN208082232U CN201820332229.9U CN201820332229U CN208082232U CN 208082232 U CN208082232 U CN 208082232U CN 201820332229 U CN201820332229 U CN 201820332229U CN 208082232 U CN208082232 U CN 208082232U
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Abstract
The utility model discloses it is a kind of can on-line maintenance low temperature SCR denitration reactor, include subregion, total inlet pipe, total escape pipe, the first collateral line pipe and the second collateral line pipe for being equipped at least two groups in reactor and being set up in parallel, the air inlet of each subregion is communicated with total inlet pipe and the first collateral line pipe, the gas outlet of each subregion is communicated with total escape pipe and the second collateral line pipe, first collateral line pipe is also communicated with total escape pipe, second collateral line pipe is also communicated with total inlet pipe, and the first collateral line pipe is equipped with hot-blast stove and wind turbine；The air inlet of first collateral line pipe, the second collateral line pipe and each subregion is equipped with the baffle door of control flue gas break-make with gas outlet.The utility model has the advantages that：The present apparatus can on-line regeneration catalyst do not have to worry the discharge beyond standards of nitrogen oxides when maintenance without stopping the operation of denitrification apparatus.This reactor types is used, due to renewable processing, catalyst amount can be suitably reduced, extend catalyst life, reduce an investment cost and operating cost.
Description
Technical field
The utility model is related to it is a kind of can on-line maintenance low temperature SCR denitration reactor.
Background technology
Present reactor be in the form of whole based on, i.e., all catalyst and equipment are all disposed within a reactor
Interior, this is a kind of middle temperature catalyst commonly reactor types.
Since sulfur dioxide under cryogenic conditions and ammonia reaction are easy to form ammonium bisulfite and catalyst blockage caused to inactivate, make
At present low temperature catalyst short life, efficiency is low.Present reactor is all whole form, can only pass through increase catalysis in this way
The quantity of agent achievees the purpose that denitration steady in a long-term.If reactor needs to safeguard or overhauls, then need to stop denitrating system
Operation.
Utility model content
The purpose of this utility model is to provide it is a kind of can on-line maintenance low temperature SCR denitration reactor, can effectively solve
Certainly the problem of existing low temperature SCR denitration reactor low temperature catalyst short life.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：One kind can be tieed up online
The low temperature SCR denitration reactor of shield, including reactor, the interior subregion being set up in parallel equipped at least two groups of the reactor, are also wrapped
Total inlet pipe, total escape pipe, the first collateral line pipe and the second collateral line pipe are included, each subregion includes air inlet and gas outlet, Mei Gefen
The air inlet in area is communicated with total inlet pipe and the first collateral line pipe, the gas outlet of each subregion and total escape pipe and the second collateral line pipe phase
Logical, the first collateral line pipe is also communicated with total escape pipe, and the second collateral line pipe is also communicated with total inlet pipe, and the first collateral line pipe is equipped with
Hot-blast stove and wind turbine；
The first collateral line pipe, the air inlet of the second collateral line pipe and each subregion and gas outlet are equipped with control flue gas break-make
Baffle door.
Preferably, the first subregion and the second subregion being set up in parallel are divided into the reactor, further includes first point of air inlet
Pipe, the second branched inlet pipe, first separate tracheae and second and separate tracheae；
Be connected with first branched inlet pipe between the total inlet pipe and the air inlet of the first subregion, total escape pipe and
It is connected with described first between the gas outlet of first subregion and separates tracheae, connects between the total inlet pipe and the air inlet of the second subregion
There is second branched inlet pipe, described second is connected between total escape pipe and the gas outlet of the second subregion and separates tracheae；
The inlet end of the first collateral line pipe is connected with total escape pipe, and the outlet side of the first collateral line pipe is connected with first point
Pipe and second it is in charge of, described first is in charge of and is communicated with the air inlet of the first subregion, and described second is in charge of the air inlet with the second subregion
Mouth communicates, and the outlet side of the second collateral line pipe is connected with total inlet pipe, and the inlet end of the second collateral line pipe is connected with third point
Pipe and the 4th is in charge of, and the third is in charge of to be communicated with the gas outlet of the first subregion, and the described 4th is in charge of the outlet with the second subregion
Mouth communicates；
First branched inlet pipe, the second branched inlet pipe, first separate tracheae, second separate tracheae, first be in charge of, second
It is in charge of, third is in charge of to be in charge of with the 4th and is also equipped with baffle door.Generally online not maintenance shut-downs can be realized in two subregions of setting,
It is divided into the air inlet pipe and an air outlet pipe of each subregion simultaneously, facilitates the working condition of two subregions of control.
Preferably, it is additionally provided with first-class heat exchanger on the total inlet pipe；It exchanges heat to the flue gas of entrance, keeps entrance
Flue gas is in suitable reaction temperature.
Preferably, it is additionally provided with secondary heat exchanger on total escape pipe；Flue gas heat recycling to emitting.
Compared with prior art, the utility model has the advantages that：More than two conversion zones, each reflecting regional are set
It is relatively independent, 350 DEG C or so of heat smoke is periodically passed through one of partitioned regenerative catalyst.If a hot-blast stove, will be anti-
It answers device exiting flue gas that part is sucked out with wind turbine and is heated to 350 DEG C or so with hot-blast stove, each subregion is each led into, with baffle door
Control which subregion heat smoke enters, the flue gas for regenerating generation is connected to former flue gases duct again.The each subregion inlet and outlet of reactor
Baffle door is all set, when a subregion catalyst needs regeneration, closes the inlet and outlet baffle of this subregion, opens hot-blast stove and goes point
The baffle and subregion in area return the baffle of former flue gases duct, and the catalyst regeneration for carrying out this subregion is safeguarded.In this way to each point
Area carries out regeneration treatment successively.
The present apparatus can on-line regeneration catalyst do not have to worry nitrogen oxides when maintenance without stopping the operation of denitrification apparatus
Discharge beyond standards.This reactor types is used, due to renewable processing, catalyst amount can be suitably reduced, extend catalysis
The agent service life reduces an investment cost and operating cost.
Description of the drawings
Fig. 1 be the utility model it is a kind of can on-line maintenance low temperature SCR denitration reactor structural schematic diagram.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Be refering to fig. 1 the utility model it is a kind of can on-line maintenance low temperature SCR denitration reactor embodiment, arrow in figure
For flow of flue gas direction, it is a kind of can on-line maintenance low temperature SCR denitration reactor, including reactor 1 sets in the reactor 1
There is the subregion that at least two groups are set up in parallel, further include total inlet pipe 2, total escape pipe 3, the first collateral line pipe 4 and the second collateral line pipe 5,
Each subregion includes air inlet and gas outlet, and the air inlet of each subregion is communicated with total inlet pipe 2 and the first collateral line pipe 4, each
The gas outlet of subregion is communicated with total escape pipe 3 and the second collateral line pipe 5, and the first collateral line pipe 4 is also communicated with total escape pipe 3, by the of second
It is that pipe 5 is also communicated with total inlet pipe 2, the first collateral line pipe 4 is equipped with hot-blast stove 6 and wind turbine 7；
It is logical that the first collateral line pipe 4, the air inlet of the second collateral line pipe 5 and each subregion and gas outlet are equipped with control flue gas
Disconnected baffle door 8.
More than two conversion zones are set, and each reflecting regional is relatively independent, periodically leads to 350 DEG C or so of heat smoke
Enter one of partitioned regenerative catalyst.If a hot-blast stove 6, part hot wind is sucked out in 1 exiting flue gas wind turbine 7 of reactor
Stove 6 is heated to 350 DEG C or so, each leads into each subregion, and controlling heat smoke with baffle door 8 enters which subregion, reproduction
Raw flue gas is connected to former flue gases duct again.Baffle door 8 is also arranged in 1 each subregion of reactor inlet and outlet, when a subregion is catalyzed
When agent needs regeneration, the inlet and outlet baffle of this subregion is closed, hot-blast stove 6 is opened and the baffle of subregion and subregion is gone to return former flue gases duct
Baffle, carry out this subregion catalyst regeneration safeguard.Regeneration treatment is carried out successively to each subregion in this way.
The present apparatus can on-line regeneration catalyst do not have to worry nitrogen oxides when maintenance without stopping the operation of denitrification apparatus
Discharge beyond standards.This 1 form of reactor is used, due to renewable processing, catalyst amount can be suitably reduced, extend catalysis
The agent service life reduces an investment cost and operating cost.
Specifically, setting 9 and second subregion 10 of independent first subregion side by side in the reactor 1, further include first point into
Tracheae 11, the second branched inlet pipe 12, first separate tracheae 13 and second and separate tracheae 14；
First branched inlet pipe 11, total outlet are connected between the total inlet pipe 2 and the air inlet of the first subregion 9
It is connected with described first between pipe 3 and the gas outlet of the first subregion 9 and separates tracheae 13, the total inlet pipe 2 and the second subregion 10
It is connected with second branched inlet pipe 12 between air inlet, institute is connected between the gas outlet of 3 and second subregion 10 of total escape pipe
It states second and separates tracheae 14；
The inlet end of the first collateral line pipe 4 is connected with total escape pipe 3, and the outlet side of the first collateral line pipe 4 is connected with
One, which is in charge of 15 and second, is in charge of 16, and described first is in charge of 15 communicates with the air inlet of the first subregion 9, and described second is in charge of 16 and
The air inlet of two subregions 10 communicates, and the outlet side of the second collateral line pipe 5 is connected with total inlet pipe 2, the second collateral line pipe 5
Inlet end, which is connected with third, to be in charge of 17 and the 4th and is in charge of 18, and the third is in charge of 17 and is communicated with the gas outlet of the first subregion 9, and described
Four are in charge of 18 communicates with the gas outlet of the second subregion 10；
First branched inlet pipe 11, the second branched inlet pipe 12, first separate tracheae 13, second separate tracheae 14, first
It is in charge of 15, second and is in charge of 16, third and is in charge of the 17, the 4th and is in charge of the inlet end of the 18, first collateral line pipe 4 and going out for the second collateral line pipe 5
Gas end is equipped with baffle door 8.
First-class heat exchanger 19 is additionally provided on total inlet pipe 2, the temperature for keeping entering flue gas in reactor 1, total
Secondary heat exchanger 20 is additionally provided on escape pipe 3, for recycling the heat in discharge flue gas.
When general operation, the inlet end of the first collateral line pipe 4, the outlet side of the second collateral line pipe 5, first are in charge of 15, second points
Pipe 16, third are in charge of 17 and the 4th and are in charge of 18 baffle door 8 and all close, the first branched inlet pipe 11, the second branched inlet pipe 12, first
Separate tracheae 13 and second separate tracheae 14 baffle door 8 all open, flue gas is from total inlet pipe 2, by first-class heat exchanger 19, so
The first subregion 9 is had respectively entered by the first air inlet pipe and the second air inlet pipe afterwards and the second subregion 10 is filtered, then from first
Escape pipe and the second escape pipe enter total escape pipe 3, are discharged after secondary heat exchanger 20 recycles heat.
When needing to clear up the first subregion 9, closes the first branched inlet pipe 11 and first and separate the baffle door 8 of tracheae 13, beat
Open the outlet side of the second collateral line pipe 5, the inlet end of the first collateral line pipe 4, first be in charge of 15 and third be in charge of 17 baffle door 8,
Two subregions 10 are normally carried out denitrating flue gas, and the flue gas of discharge is drawn by wind turbine 7 into the first collateral line pipe 4, passes through hot-blast stove 6
Be heated to 350 degrees centigrades, flue gas is in charge of 15 by first and is entered in the first subregion 9, from the gas outlet of the first subregion 9 into
Enter third and be in charge of 17, is then back to total inlet pipe 2 from the second collateral line pipe 5, using the second subregion 10, though it is possible thereby to ensure
Regeneration treatment so is being carried out to the first subregion 9, but appointing can not so shut down, and ensure that reactor 1 can also work normally, Er Qiepai
The flue gas put also complies with relevant criterion.If necessary to clean the second subregion 10, corresponding gear is operated by 9 cleaning method of the first subregion
Plate door 8 is opened and closed.
The foregoing is merely specific embodiment of the utility model, but the technical characteristics of the utility model is not limited to
This, any those skilled in the art in the field of the utility model, made by changes or modifications all cover it is new in this practicality
Among the scope of the claims of type.
Claims (4)
1. it is a kind of can on-line maintenance low temperature SCR denitration reactor, including reactor (1), it is characterised in that：The reactor
(1) subregion being set up in parallel equipped at least two groups in, further include total inlet pipe (2), total escape pipe (3), the first collateral line pipe (4) and
Second collateral line pipe (5), each subregion include air inlet and gas outlet, air inlet and total inlet pipe (2) and first of each subregion
Collateral line pipe (4) communicates, and the gas outlet of each subregion is communicated with total escape pipe (3) and the second collateral line pipe (5), the first collateral line pipe (4)
It is also communicated with total escape pipe (3), the second collateral line pipe (5) is also communicated with total inlet pipe (2), and the first collateral line pipe (4) is equipped with
Hot-blast stove (6) and wind turbine (7)；
It is logical that the first collateral line pipe (4), the air inlet of the second collateral line pipe (5) and each subregion and gas outlet are equipped with control flue gas
Disconnected baffle door (8).
2. it is as described in claim 1 it is a kind of can on-line maintenance low temperature SCR denitration reactor, it is characterised in that：The reaction
Is divided into the first subregion (9) being set up in parallel and the second subregion (10) in device (1), further include the first branched inlet pipe (11), second point
Air inlet pipe (12), first separate tracheae (13) and second and separate tracheae (14)；
First branched inlet pipe (11) is connected between the total inlet pipe (2) and the air inlet of the first subregion (9), it is described always to go out
It is connected with described first between tracheae (3) and the gas outlet of the first subregion (9) and separates tracheae (13), the total inlet pipe (2) and
Second branched inlet pipe (12), total escape pipe (3) and the second subregion (10) are connected between the air inlet of two subregions (10)
Gas outlet between be connected with described second and separate tracheae (14)；
The inlet end of the first collateral line pipe (4) is connected with total escape pipe (3), and the outlet side of the first collateral line pipe (4) is connected with
First, which is in charge of (15) and second, is in charge of (16), and described first is in charge of (15) communicates with the air inlet of the first subregion (9), and described second
It is in charge of (16) to communicate with the air inlet of the second subregion (10), outlet side and total inlet pipe (2) phase of the second collateral line pipe (5)
Even, the inlet end of the second collateral line pipe (5), which is connected with third, is in charge of (17) and the 4th and is in charge of (18), the third be in charge of (17) and
The gas outlet of first subregion (9) communicates, and the described 4th is in charge of (18) communicates with the gas outlet of the second subregion (10)；
First branched inlet pipe (11), the second branched inlet pipe (12), first separate tracheae (13), second separate tracheae (14),
First be in charge of (15), second be in charge of (16), third is in charge of (17) and the 4th and is in charge of (18) and is also equipped with baffle door (8).
3. it is as described in claim 1 it is a kind of can on-line maintenance low temperature SCR denitration reactor, it is characterised in that：It is described always into
First-class heat exchanger (19) is additionally provided on tracheae (2).
4. it is as described in claim 1 it is a kind of can on-line maintenance low temperature SCR denitration reactor, it is characterised in that：It is described always to go out
Secondary heat exchanger (20) is additionally provided on tracheae (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820332229.9U CN208082232U (en) | 2018-03-12 | 2018-03-12 | It is a kind of can on-line maintenance low temperature SCR denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820332229.9U CN208082232U (en) | 2018-03-12 | 2018-03-12 | It is a kind of can on-line maintenance low temperature SCR denitration reactor |
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| Publication Number | Publication Date |
|---|---|
| CN208082232U true CN208082232U (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820332229.9U Active CN208082232U (en) | 2018-03-12 | 2018-03-12 | It is a kind of can on-line maintenance low temperature SCR denitration reactor |
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| CN (1) | CN208082232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151130A (en) * | 2020-02-27 | 2020-05-15 | 东方电气集团东方锅炉股份有限公司 | SCR (selective catalytic reduction) flue gas denitration system with online regeneration function for garbage incinerator and denitration method thereof |
-
2018
- 2018-03-12 CN CN201820332229.9U patent/CN208082232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151130A (en) * | 2020-02-27 | 2020-05-15 | 东方电气集团东方锅炉股份有限公司 | SCR (selective catalytic reduction) flue gas denitration system with online regeneration function for garbage incinerator and denitration method thereof |
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