CN206910818U - A kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas - Google Patents
A kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas Download PDFInfo
- Publication number
- CN206910818U CN206910818U CN201720200299.4U CN201720200299U CN206910818U CN 206910818 U CN206910818 U CN 206910818U CN 201720200299 U CN201720200299 U CN 201720200299U CN 206910818 U CN206910818 U CN 206910818U
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- CN
- China
- Prior art keywords
- flue gas
- liquid ammonia
- denitration
- evaporator
- mixing chamber
- Prior art date
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 136
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000003546 flue gas Substances 0.000 title claims abstract description 60
- 238000001704 evaporation Methods 0.000 title claims abstract description 14
- 230000008020 evaporation Effects 0.000 title claims abstract description 13
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 39
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
It the utility model is related to a kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas.Wherein liquid ammonia evaporator includes the Heat Room of bottom and the mixing chamber on top, is provided with liquefied ammonia coil pipe in Heat Room, the port of export of liquefied ammonia coil pipe communicates with mixing chamber, and mixing chamber bottom is provided with revaporizer and multiple spoilers；Liquid ammonia evaporation system, including air preheater, liquid ammonia evaporator, liquid ammonia storage tank, liquid ammonia storage tank are connected by liquefied ammonia conveyance conduit with the arrival end of liquefied ammonia coil pipe.The beneficial effects of the utility model are：The high-temperature flue gas that can discharge boiler carries out denitration to it again after first passing through liquid ammonia evaporator, heat exchange efficiency greatly improves, and the flue gas after denitration is passed through in mixing chamber again liquefied ammonia steam is carried out to be mixed to form gaseous mixture, further increase the reaction efficiency of liquefied ammonia.
Description
Technical field
It the utility model is related to a kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas.
Background technology
In the gas cleaning processing of coal-burning boiler, denitration operation is typically carried out by liquefied ammonia, and traditional liquefied ammonia evaporates
For system often using equipment such as liquid ammonia evaporator, surge tank, dilution trap, dilution airs, structure is complex, and due to liquefied ammonia
It is directly entered in system, denitration efficiency is low, and liquefied ammonia consumption is big, and easily air preheater is resulted in blockage.Therefore, relevant technology
Personnel have developed one kind and first it heated before liquefied ammonia enters system, it is entered back into system after evaporating, but thermal source is
Heat supply is carried out using the flue gas after denitration, the thermal efficiency is relatively low, therefore, invents a kind of higher liquid ammonia evaporation system of thermal efficiency and seems
It is very necessary.
Utility model content
For above-mentioned deficiency, the purpose of this utility model be to provide a kind of liquid ammonia evaporator that denitration is carried out to flue gas and
Liquid ammonia evaporation system.
The technical scheme in the invention for solving the technical problem is：
A kind of liquid ammonia evaporator that denitration is carried out to flue gas, including the Heat Room of bottom and the mixing chamber on top, it is described to change
Liquefied ammonia coil pipe is provided with hot cell, the port of export of the liquefied ammonia coil pipe is communicated with the mixing chamber, and the mixing chamber bottom is set
There is revaporizer, multiple spoilers are staggeredly equipped with above the revaporizer, mixing is provided with the top of the mixing chamber
Gas outlet, flue gas inlet port and flue gas discharge opening are offered in the side wall of the Heat Room, is opened in the side wall of the mixing chamber
Provided with denitration flue gas inlet port.
It is a kind of to flue gas carry out denitration liquid ammonia evaporation system, including be arranged on boiler admission line air preheater, with
The liquid ammonia evaporator of boiler exhaust gas pipeline connection, the liquid ammonia storage tank to liquid ammonia evaporator offer liquefied ammonia, wherein, the liquefied ammonia
Evaporator is above-mentioned liquid ammonia evaporator, the arrival end phase that the liquid ammonia storage tank passes through liquefied ammonia conveyance conduit and the liquefied ammonia coil pipe
Even, the smoke discharging pipe of the boiler is connected with the flue gas inlet port of the liquid ammonia evaporator, the flue gas row of the liquid ammonia evaporator
Outlet is connected with denitrating flue gas pipeline, and the denitrating flue gas pipeline is connected with denitration flue, on the denitration flue
The denitration flue gas branch pipe being connected with the denitration flue gas inlet port is provided with, the gaseous mixture outlet of the liquid ammonia evaporator passes through
Mixed gas pipeline road is connected with the liquefied ammonia nozzle in the denitrating flue gas pipeline.
As a kind of optimal technical scheme of the present utility model, the air preheater passes through hot blast conveying pipe road and the denitration
Flue gas branch pipe is connected, and liquefied ammonia is heated so as to supplement offer hot blast by air preheater in the incipient stage.
As a kind of optimal technical scheme of the present utility model, blower fan is provided with the denitration flue gas branch pipe, further
Improve the fluid ability of hot blast.
The beneficial effects of the utility model are：
By above-mentioned technical scheme, the high-temperature flue gas for discharging boiler takes off to it again after first passing through liquid ammonia evaporator
Nitre so that the thermal efficiency is greatly improved, and the flue gas after denitration is passed through in mixing chamber again and carries out mixing shape to liquefied ammonia steam
Into gaseous mixture, the reaction efficiency of liquefied ammonia is further increased, in summary, the liquid ammonia evaporator and its system of the technical program have
There is heat exchange efficiency high, reaction efficiency is high, saves the energy and raw material, substantially reduces the cost in commercial Application.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model liquid ammonia evaporator；
Fig. 2 is the structural representation of the utility model liquid ammonia evaporation system.
In figure：1 Heat Room；2 mixing chambers；3 liquefied ammonia coil pipes；4 revaporizers；5 spoilers；6 gaseous mixture outlets；7 cigarettes
Gas inlet port；8 flue gas discharge openings；9 denitration flue gas inlet ports；10 boiler admission lines；11 air preheaters；12 boiler exhaust gas pipelines；
13 liquid ammonia storage tanks；14 liquefied ammonia conveyance conduits；15 denitrating flue gas pipelines；16 denitration flues；17 denitration flue gas branch pipes；18 mixing
Letter shoot road；19 liquefied ammonia nozzles；20 hot blast conveying pipe roads；21 blower fans；22 boilers.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.Therefore, below to attached
The detailed description of the embodiment of the present utility model provided in figure is not intended to limit claimed the scope of the utility model,
But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belong to the model of the utility model protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship, or
The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter
Change description, rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that instruction or hint relative importance.
As illustrated in fig. 1 and 2, a kind of liquid ammonia evaporator that denitration is carried out to flue gas, including the Heat Room 1 of bottom and top
Mixing chamber 2, liquefied ammonia coil pipe 3 is provided with the Heat Room 1, the port of export of the liquefied ammonia coil pipe 3 communicates with the mixing chamber 2,
The bottom of mixing chamber 2 is provided with revaporizer 4, and the top of revaporizer 4 is staggeredly equipped with multiple spoilers 5, institute
State the top of mixing chamber 2 and be provided with gaseous mixture outlet 6, flue gas inlet port 7 and flue gas row are offered in the side wall of the Heat Room 1
8 are exported, denitration flue gas inlet port 9 is offered in the side wall of the mixing chamber 2.
A kind of liquid ammonia evaporation system to flue gas progress denitration is additionally provided in this embodiment, including is arranged on
Air preheater 11 on boiler admission line 10, the liquid ammonia evaporator being connected with boiler exhaust gas pipeline 12, to the liquid ammonia evaporator
The liquid ammonia storage tank 13 of liquefied ammonia is provided, wherein, the liquid ammonia evaporator is above-mentioned liquid ammonia evaporator, and the liquid ammonia storage tank 13 passes through
Liquefied ammonia conveyance conduit 14 is connected with the arrival end of the liquefied ammonia coil pipe 3, the boiler exhaust gas pipeline 12 and the liquid ammonia evaporator
Flue gas inlet port 7 be connected, the flue gas discharge opening 8 of the liquid ammonia evaporator is connected with denitrating flue gas pipeline 15, and the flue gas takes off
Nitre pipeline 15 is connected with denitration flue 16, is provided with the denitration flue 16 and the denitration flue gas inlet port 9
Connected denitration flue gas branch pipe 17, the gaseous mixture outlet 6 of the liquid ammonia evaporator is by mixed gas pipeline road 18 with being located at
Liquefied ammonia nozzle 19 in the denitrating flue gas pipeline 15 is connected.
In technical scheme embodiment, heat is provided in order to be supplemented in the incipient stage by air preheater 11
Wind is heated to liquefied ammonia, and the air preheater 11 is connected by hot blast conveying pipe road 20 with the denitration flue gas branch pipe 17.
In order to further improve the fluid ability of hot blast, blower fan 21 is provided with the denitration flue gas branch pipe 17.
The high-temperature flue gas that present embodiment discharges boiler 22 carries out denitration to it again after first passing through liquid ammonia evaporator,
So that the thermal efficiency greatly improves, and the flue gas after denitration is passed through in mixing chamber again liquefied ammonia steam be mixed to form it is mixed
Gas is closed, further increases the reaction efficiency of liquefied ammonia.
Above-mentioned embodiment is only specific case of the present utility model, and scope of patent protection of the present utility model includes
But the product form and style of above-mentioned embodiment are not limited to, it is any to meet claims of the present invention and any affiliated skill
The appropriate change or modification that the those of ordinary skill in art field is done to it, it should all fall into the scope of patent protection of the present invention.
Claims (4)
- A kind of 1. liquid ammonia evaporator that denitration is carried out to flue gas, it is characterised in that the mixing of Heat Room and top including bottom Room, liquefied ammonia coil pipe is provided with the Heat Room, the port of export of the liquefied ammonia coil pipe communicates with the mixing chamber, the mixing chamber Bottom is provided with revaporizer, and multiple spoilers are staggeredly equipped with above the revaporizer, are set at the top of the mixing chamber Gaseous mixture outlet is equipped with, flue gas inlet port and flue gas discharge opening are offered in the side wall of the Heat Room, the mixing chamber Denitration flue gas inlet port is offered in side wall.
- 2. a kind of liquid ammonia evaporation system that denitration is carried out to flue gas, including the air preheater and pot being arranged on boiler admission line The liquid ammonia evaporator of fire grate smoke pipeline connection, the liquid ammonia storage tank to liquid ammonia evaporator offer liquefied ammonia, it is characterised in that described Liquid ammonia evaporator is the liquid ammonia evaporator described in the claims 1, and the liquid ammonia storage tank passes through liquefied ammonia conveyance conduit and institute The arrival end for stating liquefied ammonia coil pipe is connected, and the boiler exhaust gas pipeline is connected with the flue gas inlet port of the liquid ammonia evaporator, described The flue gas discharge opening of liquid ammonia evaporator is connected with denitrating flue gas pipeline, and the denitrating flue gas pipeline is connected with denitration flue, The denitration flue gas branch pipe being connected with the denitration flue gas inlet port, the liquid ammonia evaporator are provided with the denitration flue Gaseous mixture outlet be connected by mixed gas pipeline road with the liquefied ammonia nozzle in the denitrating flue gas pipeline.
- 3. a kind of liquid ammonia evaporation system that denitration is carried out to flue gas according to claim 2, it is characterised in that described empty pre- Device is connected by hot blast conveying pipe road with the denitration flue gas branch pipe.
- 4. a kind of liquid ammonia evaporation system that denitration is carried out to flue gas according to Claims 2 or 3, it is characterised in that described Blower fan is provided with denitration flue gas branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200299.4U CN206910818U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200299.4U CN206910818U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206910818U true CN206910818U (en) | 2018-01-23 |
Family
ID=61309497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720200299.4U Active CN206910818U (en) | 2017-03-03 | 2017-03-03 | A kind of liquid ammonia evaporator and liquid ammonia evaporation system that denitration is carried out to flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206910818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806605A (en) * | 2019-03-22 | 2019-05-28 | 朋仁锋 | A kind of denitrating flue gas liquid ammonia evaporator |
| CN112169361A (en) * | 2020-11-10 | 2021-01-05 | 上海天晓环保工程有限公司 | An energy-saving and high-efficiency ammonia water evaporation device |
-
2017
- 2017-03-03 CN CN201720200299.4U patent/CN206910818U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806605A (en) * | 2019-03-22 | 2019-05-28 | 朋仁锋 | A kind of denitrating flue gas liquid ammonia evaporator |
| CN109806605B (en) * | 2019-03-22 | 2021-06-01 | 山东江宇环保科技有限公司 | Liquid ammonia evaporator for flue gas denitration |
| CN112169361A (en) * | 2020-11-10 | 2021-01-05 | 上海天晓环保工程有限公司 | An energy-saving and high-efficiency ammonia water evaporation device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |