CN203725018U - Dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification - Google Patents
Dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification Download PDFInfo
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- CN203725018U CN203725018U CN201420066751.9U CN201420066751U CN203725018U CN 203725018 U CN203725018 U CN 203725018U CN 201420066751 U CN201420066751 U CN 201420066751U CN 203725018 U CN203725018 U CN 203725018U
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- standby
- dilution water
- valve
- ball valve
- centrifugal pump
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Abstract
The utility model discloses an dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification, which comprises a supporting bracket and an dilution water storage tank, wherein the supporting bracket is provided with two dilution water conveying devices; each dilution water conveying device comprises a centrifugal pump, a check valve, a first ball valve and a relief valve; the output port of the storage tank is connected to a respective metering and mixing module via the centrifugal pump, check valve, first ball valve and relief valve through a pipeline; the output end of the first ball valve is connected to the input port of the storage tank; the dilution water conveyor also comprises a standby centrifugal pump, a standby check valve and a standby first ball valve; the outlet port of the storage tank is connected to the input end of the standby first ball valve via the standby centrifugal pump and standby check valve through a pipeline; and the output end of the standby first ball valve is communicated with the output ends of the two first ball valves through changeover valves. A second ball valve and a filter screen are sequentially connected between the output port of the storage tank and the centrifugal pump in series. The conveyor has the advantages of simple structure, low cost and high work efficiency, and is convenient for use and maintenance.
Description
Technical field
The utility model relates to the dilution water conveying device that a kind of SNCR denitration is used.
Background technology
SNCR denitration is to carry becoming a certain proportion of reducing agent after ammoniacal liquor and dilution water mixing by pump, at boiler correct position, injects the reducing agent after dilution, and denitration reaction is carried out in reducing agent and flue gas mixing.This technology maturation is reliable, the high system run all right EM equipment module of reducing agent effective rate of utilization, take up an area little, without byproduct, non-secondary pollution.Dilution water conveying device is indispensable conveying device in SNCR denitration device, without existing finished product.
Utility model content
The dilution water conveying device that the utility model provides a kind of SNCR denitration to use.
The technical solution of the utility model is:
The dilution water conveying device that a kind of SNCR denitration is used, comprise: bearing support and for the fluid reservoir of dilution water, two-way dilution water conveying device is installed on bearing support, every road dilution water conveying device comprises centrifugal pump, check-valves, the first ball valve and pressure-reducing valve, the delivery outlet of fluid reservoir by pipeline through centrifugal pump, check-valves, the first ball valve and pressure-reducing valve are to metering mixing module, the output of the first ball valve is also connected to the input port of fluid reservoir, also comprise standby centrifugal pump, standby check-valves and standby the first ball valve, the delivery outlet of fluid reservoir by pipeline through standby centrifugal pump, standby check-valves is to the input of standby the first ball valve, the output of standby the first ball valve is communicated with the output of the first ball valve through switching valve respectively.
Because the output flow of centrifugal pump is more constant, regulating pressure-reducing valve is the adjustable flow that flow into metering mixing module, and remaining is back to the input port of fluid reservoir, and metering mixing module is the target output equipment of this dilution water conveying device.
While closing switching valve, do not affect two-way dilution water conveying device and normally work, when one of them centrifugal pump damage maybe needs to safeguard, first ball valve of closing this road, opens stand-by provision and corresponding switching valve can maintain dilution water conveying function.
As preferably, between the delivery outlet of described fluid reservoir and centrifugal pump, be connected in series successively the second ball valve and screen pack.
In order to facilitate blowdown, the pipeline connection between described screen pack and centrifugal pump is to the first blowoff valve.
In order to maintain easily, between the input of described pressure-reducing valve and the input port of described fluid reservoir, be connected in series Cutoff ball valve, between the output of described pressure-reducing valve and the input port of described fluid reservoir, by isolating valve, be connected.
The output of described check-valves also connects Pressure gauge and the second blowoff valve.
As preferably, between the delivery outlet of described fluid reservoir and standby centrifugal pump, be connected in series successively standby the second ball valve and standby screen pack.
As preferably, the pipeline connection between described standby screen pack and standby centrifugal pump is to standby the first blowoff valve.
As preferably, the output of described standby check-valves also connects standby pressure table and standby the second blowoff valve.
The utlity model has beneficial effect simple in structure, that cost is low, working service is convenient, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
The specific embodiment
Now by reference to the accompanying drawings the utility model is further described:
As shown in the figure, the dilution water conveying device that a kind of SNCR denitration is used, comprise: bearing support 1 and for the fluid reservoir of dilution water, two-way dilution water conveying device is installed on bearing support 1, every road dilution water conveying device comprises centrifugal pump 24, check-valves 25, the first ball valve 28 and pressure-reducing valve 31, the delivery outlet of fluid reservoir by pipeline through centrifugal pump 24, check-valves 25, the first ball valve 28 and pressure-reducing valve 31 are to metering mixing module, the output of the first ball valve 28 is also connected to the input port of fluid reservoir, also comprise standby centrifugal pump 44, standby check-valves 45 and standby the first ball valve 48, the delivery outlet of fluid reservoir by pipeline through standby centrifugal pump 44, standby check-valves 45 is to the input of standby the first ball valve 48, the output of standby the first ball valve 48 is communicated with the output of the first ball valve 28 through switching valve 51 respectively.
Between the delivery outlet of described fluid reservoir and centrifugal pump 24, be connected in series successively the second ball valve 21 and screen pack 22.
Pipeline connection between described screen pack 22 and centrifugal pump 24 is to the first blowoff valve 23.
Between the input of described pressure-reducing valve 31 and described fluid reservoir input port, be connected in series Cutoff ball valve 30, between the output of described pressure-reducing valve 31 and described fluid reservoir input port, by isolating valve 32, be connected.
The output of described check-valves 25 also connects Pressure gauge 26 and the second blowoff valve 27.
Between the delivery outlet of described fluid reservoir and standby centrifugal pump 44, be connected in series successively standby the second ball valve 41 and standby screen pack 42.
Pipeline connection between described standby screen pack 42 and standby centrifugal pump 44 is to standby the first blowoff valve 43.
The output of described standby check-valves 45 also connects standby pressure table 46 and standby the second blowoff valve 47.
Centrifugal pump 24 symmetries in two-way dilution water conveying device are arranged on bearing support 1, and centrifugal pump 24 can be selected flow 3m3/h, lift 150m, 44 belows that are arranged on centrifugal pump 24 of standby centrifugal pump.
Claims (8)
1. the dilution water conveying device that SNCR denitration is used, it is characterized in that, comprise: bearing support (1) and for the fluid reservoir of dilution water, two-way dilution water conveying device is installed on bearing support (1), every road dilution water conveying device comprises centrifugal pump (24), check-valves (25), the first ball valve (28) and pressure-reducing valve (31), the delivery outlet of fluid reservoir by pipeline through centrifugal pump (24), check-valves (25), the first ball valve (28) and pressure-reducing valve (31) are to metering mixing module, the output of the first ball valve (28) also connects the input port of fluid reservoir, also comprise standby centrifugal pump (44), standby check-valves (45) and standby the first ball valve (48), the delivery outlet of fluid reservoir by pipeline through standby centrifugal pump (44), standby check-valves (45) is to the input of standby the first ball valve (48), the output of standby the first ball valve (48) is communicated with the output of the first ball valve (28) through switching valve (51) respectively.
2. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 1 is used, is characterized in that, between the delivery outlet of described fluid reservoir and centrifugal pump (24), is connected in series successively the second ball valve (21) and screen pack (22).
3. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 2 is used, is characterized in that, the pipeline connection between described screen pack (22) and centrifugal pump (24) is to the first blowoff valve (23).
4. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 3 is used, it is characterized in that, between the input of described pressure-reducing valve (31) and described fluid reservoir input port, be connected in series Cutoff ball valve (30), between the output of described pressure-reducing valve (31) and described fluid reservoir input port, by isolating valve (32), be connected.
5. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 4 is used, is characterized in that, the output of described check-valves (25) also connects Pressure gauge (26) and the second blowoff valve (27).
6. the dilution water conveying device that a kind of SNCR denitration as described in claim 1-5 any one is used, is characterized in that, between the delivery outlet of described fluid reservoir and standby centrifugal pump (44), is connected in series successively standby the second ball valve (41) and standby screen pack (42).
7. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 6 is used, is characterized in that, the pipeline connection between described standby screen pack (42) and standby centrifugal pump (44) is to standby the first blowoff valve (43).
8. the dilution water conveying device that a kind of SNCR denitration as claimed in claim 7 is used, is characterized in that, the output of described standby check-valves (45) also connects standby pressure table (46) and standby the second blowoff valve (47).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066751.9U CN203725018U (en) | 2014-02-14 | 2014-02-14 | Dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066751.9U CN203725018U (en) | 2014-02-14 | 2014-02-14 | Dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725018U true CN203725018U (en) | 2014-07-23 |
Family
ID=51195119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066751.9U Expired - Fee Related CN203725018U (en) | 2014-02-14 | 2014-02-14 | Dilution water conveyor for SNCR (selective non-catalytic reduction) denitrification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203725018U (en) |
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2014
- 2014-02-14 CN CN201420066751.9U patent/CN203725018U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170214 |