CN203090497U - Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification - Google Patents
Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification Download PDFInfo
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- CN203090497U CN203090497U CN 201320145843 CN201320145843U CN203090497U CN 203090497 U CN203090497 U CN 203090497U CN 201320145843 CN201320145843 CN 201320145843 CN 201320145843 U CN201320145843 U CN 201320145843U CN 203090497 U CN203090497 U CN 203090497U
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- ammonia
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- flue gas
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Abstract
The utility model discloses a steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification. The evaporator comprises an evaporator body (1), wherein a steam transition cavity, a condensed water outlet cavity and an ammonia transition cavity are formed in the evaporator body (1), heat exchange tubes (15) are arranged in the ammonia transition cavity and communicated with the condensed water outlet cavity. The evaporator can conveniently produce a great amount of ammonia gas when in use, so that the corresponding required amount of ammonia gas can be synchronously supplied in a denitrification process of a flue gas denitrification system, and the denitrification efficiency of the flue gas denitrification system applying the evaporator is increased.
Description
Technical field
The utility model relates to a kind of evaporimeter, specifically is the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas.
Background technology
Coal can produce nitrogen oxide NOx in combustion process, nitrogen oxide NOx is a kind of atmosphere pollution, NOx can further generate photochemical fog under the situation that carbonaceous material exists, the more important thing is that NOx can form acid rain and damages the ozone layer, cause greenhouse effects, bring serious harm for natural environment and human health.It is another major fields of China's control thermal power plant pollutant emission after flue gas desulfurization that denitrating flue gas becomes, from existing denitrating technique, no matter be selective catalytic reduction (being SCR), or non-selective catalytic reduction (SNCR) technology all is to utilize ammonia as reducing agent the NOx in the flue gas to be reduced into N
2And H
2O, thereby the purpose of realization denitration.Under the situation that NOx concentration is high in the big or flue gas in exhaust gas volumn, the consumption of needed reducing agent---ammonia also needs to increase the NOx concentration qualified discharge that just can make flue gas.Present flue gas denitrification system generally adopts liquefied ammonia to evaporate resulting ammonia as reducing agent, existing flue gas denitrification system is not easy to make synchronously a large amount of ammonias in denitrification process, in order to guarantee the supply of ammonia in the denitrification process, people carry out denitrating technique after preparing ammonia in advance again, and this has just influenced the efficient of denitration.
The utility model content
The purpose of this utility model is to solve that existing flue gas denitrification system need prepare ammonia in advance when the ammonia demand is big and the problem that influences denitration efficiency, a kind of horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas is provided, it makes a large amount of ammonias synchronously in denitrification process easy to operate, and then can satisfy the high ammonia consumption of flue gas denitrification system.
The purpose of this utility model is achieved through the following technical solutions: the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas, comprise evaporator body, be provided with steam adapter cavity, condensed water water chamber and ammonia adapter cavity in the described evaporator body, be provided with heat exchanger tube in the described ammonia adapter cavity, described steam adapter cavity is connected by heat exchanger tube and condensed water water chamber.When using, the utility model enters heat exchanger tube behind the process steam process of the present utility model steam adapter cavity, steam carries out heat exchange with the interior liquefied ammonia of ammonia adapter cavity when the heat exchanger tube, steam becomes condensed water and enters in the condensed water water chamber, and becomes the gas ammonia that can be used for flue gas denitrification system after the liquefied ammonia heat exchange in the ammonia adapter cavity.
Be provided with dividing plate and tube sheet in the described evaporator body, described tube sheet is separated the evaporator body inner chamber body and is constituted two cavitys, described dividing plate and heat exchanger tube lay respectively in two cavitys of tube sheet separation, the cavity of ccontaining heat exchanger tube is the ammonia adapter cavity in two cavitys, the cavity of ccontaining dividing plate is separated into steam adapter cavity and condensed water water chamber by dividing plate in two cavitys, and described heat exchanger tube is fixed on by its two openend and connects steam adapter cavity and condensed water water chamber on the tube sheet.The utility model is separated into steam adapter cavity and condensed water water chamber by dividing plate with the cavity of ccontaining dividing plate, so, can prevent that steam from directly discharging from the condensed water water chamber without heat exchanger tube; The utility model fixes heat exchanger tube by tube sheet, and this not only guarantees the stable of heat exchanger tube fixed structure, and is convenient to the installation and removal of heat exchanger tube.
Described evaporator body is provided with steam inlet, condensation-water drain, liquefied ammonia import and gas ammonia outlet, described steam inlet and steam adapter cavity are connected, condensation-water drain and condensed water water chamber are connected, gas ammonia outlet is positioned at the evaporator body top, and liquefied ammonia import and gas ammonia outlet are all connected with the ammonia adapter cavity.Liquefied ammonia entered the ammonia adapter cavity by the liquefied ammonia import when the utility model was used, steam enters the steam adapter cavity by steam inlet, and after the liquefied ammonia heat exchange in heat exchanger tube and ammonia adapter cavity, flow out from condensation-water drain after steam becomes condensed water and enters the condensed water water chamber, become gas ammonia after the liquefied ammonia heat exchange in the ammonia adapter cavity and be used for flue gas denitrification system from gas ammonia outlet discharge.
The passage that the ammonia adapter cavity is connected in described gas ammonia outlet is provided with mesh mist eliminator.The utility model can prevent so that by setting up mesh mist eliminator a small amount of liquefied ammonia that gas ammonia is carried secretly from exporting discharge from gas ammonia.
For the ease of the pressure and temperature in the monitoring ammonia adapter cavity, as preferably, described evaporator body top is provided with the teletransmission thermometer boss of connecting the ammonia adapter cavity, teletransmission pressure gauge connection and pressure gauge connection on the spot.The teletransmission thermometer boss is used to install the teletransmission thermometer when the utility model is used, and the teletransmission pressure gauge connection is used to install the teletransmission Pressure gauge, and pressure gauge connection is used to install Pressure gauge on the spot on the spot.
Described evaporator body top is provided with the relief valve connection of connecting the ammonia adapter cavity.The utility model is convenient to install safety valve by setting up relief valve connection, and when ammonia adapter cavity internal pressure surpassed certain limit, safety valve redirect automatically carried out pressure release to the ammonia adapter cavity, and then can try to avert accidents.
For the ease of the dirt in the ammonia adapter cavity is discharged, described evaporator body bottom is provided with the sewage draining exit of connecting the ammonia adapter cavity.
For the ease of the liquid level in the monitoring ammonia adapter cavity, as preferably, described evaporator body sidewall is provided with two interface of the level gauge of connecting the ammonia adapter cavities, and two interface of the level gauge are respectively near the top and the bottom of evaporator body.Two interface of the level gauge are connected with a liquid level gauge respectively when the utility model is used, and monitor liquid level in the ammonia adapter cavity by two liquid level gauges, and then the liquid level in the ammonia adapter cavity is controlled in the normal range (NR).
For the ease of the installation of heat exchanger tube with increase the contact area of liquefied ammonia in heat exchanger tube and the ammonia adapter cavity, as preferably, described heat exchanger tube is the U-shaped pipe.
Compared with prior art, the utlity model has following beneficial effect: be provided with the steam adapter cavity in the evaporator body of the present utility model, condensed water water chamber and ammonia adapter cavity, be provided with heat exchanger tube in the ammonia adapter cavity, the steam adapter cavity is connected by heat exchanger tube and condensed water water chamber, overall structure is simple, be convenient to realize, steam enters in the condensed water water chamber through becoming condensed water after liquefied ammonia carries out heat exchange in heat exchanger tube and the ammonia adapter cavity when the utility model is used, become gas ammonia behind the steam heat-exchanging in liquefied ammonia and the heat exchanger tube in the ammonia adapter cavity, gas ammonia is used for flue gas denitrification system after discharging, the utility model is at the gas ammonia of different demands, only need calculate the required heat exchange area of liquefied ammonia in heat exchanger tube and the ammonia adapter cavity, again the layout heat exchanger tube can guarantee the quantity delivered of gas ammonia, so, when the demand of the required gas ammonia of flue gas denitrification system is big, increasing the heat exchanger tube volume increases the contact area of liquefied ammonia in heat exchanger tube and the ammonia adapter cavity, and then can improve the growing amount of gas ammonia, can guarantee that flue gas denitrification system also can supply with gas ammonia by the utility model when the gas ammonia demand is big in denitrification process synchronously, guarantee denitration efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The pairing name of Reference numeral is called in the accompanying drawing: 1, liquefied ammonia evaporator body, 2, steam inlet, 4, the liquefied ammonia import, 5, gas ammonia outlet, 6, relief valve connection, 7, the teletransmission thermometer boss, 8, teletransmission pressure gauge connection, 9, pressure gauge connection on the spot, 10, interface of the level gauge, 11, sewage draining exit, 12, dividing plate, 13, tube sheet, 14, the tube sheet mounting flange, 15, heat exchanger tube, 16, mesh mist eliminator.
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas, comprise evaporator body 1, wherein, evaporator body 1 is provided with the steam adapter cavity, the condensed water water chamber, the ammonia adapter cavity, steam inlet 2, condensation-water drain 3, liquefied ammonia import 4 and gas ammonia outlet 5, wherein, the steam adapter cavity is positioned at condensed water water chamber top, steam inlet 2 is positioned at evaporator body 1 top, condensation-water drain 3 is positioned at evaporator body 1 bottom, and steam inlet 2 is connected with the steam adapter cavity, and condensation-water drain 3 is connected with the condensed water water chamber, gas ammonia outlet 5 is positioned at evaporator body 1 top, and liquefied ammonia import 4 and gas ammonia outlet 5 are all connected with the ammonia adapter cavity.Be provided with heat exchanger tube 15 in the ammonia adapter cavity, the steam adapter cavity is connected by heat exchanger tube 15 and condensed water water chamber.When present embodiment is used, the shell of evaporator body 1 is incubated, and then prevents thermal loss.
Embodiment 2:
Present embodiment further limits structure on the basis of embodiment 1: be provided with dividing plate 12 and tube sheet 13 in the evaporator body 1, tube sheet 13 is fixed on the evaporator body 1 by tube sheet mounting flange 14.Tube sheet 13 is separated evaporator body 1 inner chamber body and is constituted two cavitys, dividing plate 12 and heat exchanger tube 15 lay respectively in two cavitys of tube sheet 13 separations, the cavity of ccontaining heat exchanger tube 15 is the ammonia adapter cavity in two cavitys, and the cavity of ccontaining dividing plate 12 is separated into steam adapter cavity and condensed water water chamber by dividing plate 12 in two cavitys.The heat exchanger tube 15 preferred U-shaped pipes that adopt, heat exchanger tube 15 is fixed on by its two openend and connects steam adapter cavity and condensed water water chamber on the tube sheet 13, wherein, heat exchanger tube 15 combines by expanded and welded tube joint with tube sheet 13 and carries out sealing and fixing, avoids liquefied ammonia to leak out from the commissure.
Embodiment 3:
Present embodiment is being made following improvement on the basis of embodiment 1 or embodiment 2: be provided with mesh mist eliminator 16 on the passage of the gas ammonia outlet 5 connection ammonia adapter cavities of present embodiment, a small amount of liquefied ammonia that present embodiment can avoid gas ammonia to carry secretly by mesh mist eliminator 16 is discharged from gas ammonia outlet 5.
Embodiment 4:
Made following improvement on the basis of present embodiment any one embodiment in embodiment 1～3: evaporator body 1 top of present embodiment is provided with teletransmission thermometer boss 7, the teletransmission pressure gauge connection 8 of connecting the ammonia adapter cavity and reaches pressure gauge connection 9 on the spot, so, present embodiment is convenient to external teletransmission thermometer, teletransmission Pressure gauge and Pressure gauge on the spot when using, and then is convenient to the pressure and temperature in the ammonia adapter cavity is monitored.
Embodiment 5:
Made following improvement on the basis of present embodiment any one embodiment in embodiment 1～4: evaporator body 1 top of present embodiment is provided with the relief valve connection 6 of connecting the ammonia adapter cavity, when present embodiment is used, be convenient to external safety valve, security incident takes place in the time of so avoiding ammonia adapter cavity internal pressure excessive.
Embodiment 6:
Made following improvement on the basis of present embodiment any one embodiment in embodiment 1～5: evaporator body 1 bottom of present embodiment is provided with the sewage draining exit 11 of connecting the ammonia adapter cavity, be convenient to the dirt in the ammonia adapter cavity is discharged by sewage draining exit 11, guarantee to be heated unobstructed leading to of flows of liquid ammonia in the ammonia adapter cavity with liquefied ammonia.
Embodiment 7:
Made following improvement on the basis of present embodiment any one embodiment in embodiment 1～6: evaporator body 1 sidewall of present embodiment is provided with two interface of the level gauge 10 of connecting the ammonia adapter cavity, two interface of the level gauge 10 are respectively near the top and the bottom of evaporator body 1, present embodiment is convenient to external liquid level gauge by two interface of the level gauge 10, is convenient to the liquid level in the ammonia adapter cavity is monitored under the effect of liquid level gauge.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that the specific embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field,, all should be included in the protection domain of the present utility model not breaking away from other embodiments that draw under the technical solution of the utility model.
Claims (9)
1. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas, it is characterized in that: comprise evaporator body (1), be provided with steam adapter cavity, condensed water water chamber and ammonia adapter cavity in the described evaporator body (1), be provided with heat exchanger tube (15) in the described ammonia adapter cavity, described steam adapter cavity is connected by heat exchanger tube (15) and condensed water water chamber.
2. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1, it is characterized in that: be provided with dividing plate (12) and tube sheet (13) in the described evaporator body (1), described tube sheet (13) is separated evaporator body (1) inner chamber body and is constituted two cavitys, described dividing plate (12) and heat exchanger tube (15) lay respectively in two cavitys of tube sheet (13) separation, the cavity of ccontaining heat exchanger tube (15) is the ammonia adapter cavity in two cavitys, the cavity of ccontaining dividing plate (12) is separated into steam adapter cavity and condensed water water chamber by dividing plate (12) in two cavitys, and described heat exchanger tube (15) is fixed on by its two openend and connects steam adapter cavity and condensed water water chamber on the tube sheet (13).
3. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1, it is characterized in that: described evaporator body (1) is provided with steam inlet (2), condensation-water drain (3), liquefied ammonia import (4) and gas ammonia outlet (5), described steam inlet (2) is connected with the steam adapter cavity, condensation-water drain (3) is connected with the condensed water water chamber, gas ammonia outlet (5) is positioned at evaporator body (1) top, and liquefied ammonia import (4) and gas ammonia export (5) and all connect with the ammonia adapter cavity.
4. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 3 is characterized in that: the passage that the ammonia adapter cavity is connected in described gas ammonia outlet (5) is provided with mesh mist eliminator (16).
5. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1 is characterized in that: described evaporator body (1) top is provided with teletransmission thermometer boss (7), the teletransmission pressure gauge connection (8) of connecting the ammonia adapter cavity and reaches pressure gauge connection (9) on the spot.
6. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1 is characterized in that: described evaporator body (1) top is provided with the relief valve connection (6) of connecting the ammonia adapter cavity.
7. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1 is characterized in that: described evaporator body (1) bottom is provided with the sewage draining exit (11) of connecting the ammonia adapter cavity.
8. the horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas according to claim 1, it is characterized in that: described evaporator body (1) sidewall is provided with two interface of the level gauge (10) of connecting the ammonia adapter cavity, and two interface of the level gauge (10) are the top and the bottom of close evaporator body (1) respectively.
9. according to any described horizontal liquefied ammonia evaporimeter of the big evaporation capacity of Steam Heating that is used for denitrating flue gas in the claim 1～8, it is characterized in that: described heat exchanger tube (15) is the U-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145843 CN203090497U (en) | 2013-03-28 | 2013-03-28 | Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145843 CN203090497U (en) | 2013-03-28 | 2013-03-28 | Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification |
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| Publication Number | Publication Date |
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| CN203090497U true CN203090497U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320145843 Expired - Lifetime CN203090497U (en) | 2013-03-28 | 2013-03-28 | Steam heating large-evaporation-capacity horizontal liquid ammonia evaporator for flue gas denitrification |
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| CN (1) | CN203090497U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106166393A (en) * | 2016-07-26 | 2016-11-30 | 湖南百利工程科技股份有限公司 | A kind of ammonia evaporator of band heating coil |
| CN106166395A (en) * | 2016-08-31 | 2016-11-30 | 上海京藤化工有限公司 | A kind of sulfuric acid evaporator for refined acid process units |
| CN106178558A (en) * | 2016-09-13 | 2016-12-07 | 上海方政机电自控设备有限公司 | High-efficient liquid ammonia evaporator |
| CN106323027A (en) * | 2016-10-20 | 2017-01-11 | 北京石油化工工程有限公司 | Steam self-condensing device and application thereof |
| CN106595148A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Ammonia adding device for synthesis ammonia cooler |
| CN106823421A (en) * | 2017-03-31 | 2017-06-13 | 上海方政机电自控设备有限公司 | Horizontal efficient liquid ammonia evaporator |
| CN107449288A (en) * | 2017-08-11 | 2017-12-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer and its method of work |
| CN108027134A (en) * | 2015-07-07 | 2018-05-11 | 获劳动红旗勋章和Czsr劳动勋章的水压试验设计院联合股份公司 | Steam generator |
| CN111744222A (en) * | 2020-06-23 | 2020-10-09 | 莫清翔 | Liquid ammonia evaporator for flue gas denitration |
-
2013
- 2013-03-28 CN CN 201320145843 patent/CN203090497U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108027134A (en) * | 2015-07-07 | 2018-05-11 | 获劳动红旗勋章和Czsr劳动勋章的水压试验设计院联合股份公司 | Steam generator |
| CN106595148A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Ammonia adding device for synthesis ammonia cooler |
| CN106166393A (en) * | 2016-07-26 | 2016-11-30 | 湖南百利工程科技股份有限公司 | A kind of ammonia evaporator of band heating coil |
| CN106166393B (en) * | 2016-07-26 | 2018-07-27 | 湖南百利工程科技股份有限公司 | A kind of ammonia evaporator with heating coil |
| CN106166395A (en) * | 2016-08-31 | 2016-11-30 | 上海京藤化工有限公司 | A kind of sulfuric acid evaporator for refined acid process units |
| CN106178558A (en) * | 2016-09-13 | 2016-12-07 | 上海方政机电自控设备有限公司 | High-efficient liquid ammonia evaporator |
| CN106323027A (en) * | 2016-10-20 | 2017-01-11 | 北京石油化工工程有限公司 | Steam self-condensing device and application thereof |
| CN106823421A (en) * | 2017-03-31 | 2017-06-13 | 上海方政机电自控设备有限公司 | Horizontal efficient liquid ammonia evaporator |
| CN107449288A (en) * | 2017-08-11 | 2017-12-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of ammonia vaporizer and its method of work |
| CN111744222A (en) * | 2020-06-23 | 2020-10-09 | 莫清翔 | Liquid ammonia evaporator for flue gas denitration |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU RAISE ENVIRONMENTAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 307 No. 6, building B, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 610000 Patentee after: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 307 No. 6, building B, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 610000 Patentee before: Chengdu Raise Environmental Protection Technology Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |