CN103007558A - Liquid ammonia evaporator - Google Patents
Liquid ammonia evaporator Download PDFInfo
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- CN103007558A CN103007558A CN2012105687092A CN201210568709A CN103007558A CN 103007558 A CN103007558 A CN 103007558A CN 2012105687092 A CN2012105687092 A CN 2012105687092A CN 201210568709 A CN201210568709 A CN 201210568709A CN 103007558 A CN103007558 A CN 103007558A
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- tank body
- ammonia
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- liquid ammonia
- evaporation coil
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Abstract
The invention relates to a liquid ammonia evaporator. The liquid ammonia evaporator comprises a tank body, wherein a steam inlet is formed in the lower part of the tank body; a water supplementing port is formed in the upper part of the tank body; a liquid ammonia inlet is formed in the top of the tank body; an evaporation coil, a steam coil and an ammonia gas collecting pipe which are connected with the liquid ammonia inlet are arranged inside the tank body; and the evaporation coil adopts a finned pipe, so that the heat transfer area of a unit length of evaporation coil is increased, thus increasing the heat flux of a unit length of evaporation coil. Compared with the prior art, the liquid ammonia evaporator has the advantages of high heat transfer efficiency, energy conservation, small equipment size and the like.
Description
Technical field
The present invention relates to a kind of heat exchanger, especially relate to a kind of liquid ammonia evaporator.
Background technology
Liquid ammonia evaporator is a kind of heat exchanger, provides gasification institute calorific requirement by hot side medium to liquefied ammonia, liquefied ammonia is evaporated to gas ammonia uses.It is widely used in the industries such as petrochemical industry, medicine, generating.Liquid ammonia evaporator of the prior art, steam directly sprayed in the water heat, make the gasification of being heated of liquefied ammonia in the coil pipe be gas ammonia, this structured liquid ammonia evaporator comprises and is provided with evaporation coil, the gas ammonia collecting pipe that links to each other with the liquefied ammonia import in tank body, the tank body, the gas ammonia collecting pipe is positioned at the tank body center, gas ammonia collecting pipe one end is positioned at tank body, and the other end stretches out outside the tank body.
The characteristics of heat transfer of liquefied ammonia evaporation coil is: the pipe outside is the immersion heat exchange, its heat transfer coefficient is little, liquefied ammonia evaporative phase-change heat exchange in the coil pipe, and heat transfer coefficient is large, thereby whole heat transfer resistance mainly concentrates on the coil pipe outside, and the heat transfer coefficient in the pipe outside plays a decisive role to total heat transfer coefficient.What liquid ammonia evaporator main element evaporation coil of the prior art adopted is the stainless steel light pipe, and this structure does not have specific aim to consider the characteristics of liquefied ammonia evaporative phase-change heat exchange in coil pipe outside immersion heat exchange and the coil pipe, and heat transfer efficiency is poor.Thereby determined that liquid ammonia evaporator heat transfer efficiency of the prior art is poor, the shortcomings such as energy consumption height.
Summary of the invention
Purpose of the present invention is exactly that a kind of heat transfer efficiency height, energy efficient, liquid ammonia evaporator that equipment volume is little are provided in order to overcome the defective that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of liquid ammonia evaporator, comprise that tank body, tank body lower part are provided with steam inlet, tank body top is provided with water supplement port, the tank body top is provided with the liquefied ammonia import, be provided with the evaporation coil that links to each other with the liquefied ammonia import and steam pipe coil, gas ammonia collecting pipe in the described tank body, described evaporation coil adopts finned tube, has increased the heat transfer area of unit pipe range evaporation coil, thereby increases the heat flux on the unit pipe range.
Offer perforate on the described steam pipe coil, steam pipe coil is collected the steam obtain evenly in perforate is injected to water-bath in the tank body, makes bath temperature remain on 40-70 ℃.
Described evaporation coil is immersed in the water-bath of tank body.
Liquefied ammonia flow in the evaporation coil from the liquefied ammonia import, and the water-bath heat absorption through the outside is evaporated to gaseous ammonia.
Described gas ammonia collecting pipe one end is arranged in the tank body, and the other end extends in outside the tank body.
Described gas ammonia collecting pipe is connected with evaporation coil in tank body.
Described gas ammonia collecting pipe extends in the outer end of tank body and is provided with the gas ammonia outlet, or the inclination vertical with the gas ammonia collecting pipe of this gas ammonia outlet communicates.
The top of described tank body is provided with overfall, liquid level gauge mouth, thermometer mouth, and the bottom is provided with liquid level gauge mouth, sewage draining exit.
Steam pipe coil in the steam inlet tank of heating steam by tank body lower part has been offered several apertures on the steam pipe coil, steam directly can be sprayed into uniformly in the water-bath in the tank, makes bath temperature remain on a certain assigned temperature between 40～70 ℃.Evaporation coil is immersed in the water-bath, and liquefied ammonia enters to absorb heat in the evaporation coil from the liquefied ammonia import and is evaporated to gaseous ammonia.Output after gas ammonia is collected by the gas ammonia collecting pipe.
Compared with prior art, the present invention has the following advantages:
One, heat transfer efficiency is high: liquefied ammonia evaporation coil of the present invention has adopted efficient external finned tube, the external finned tube coil pipe is immersed in the water-bath, compare in common light pipe, increased the contact area of evaporation coil and water-bath side, overall heat-transfer coefficient owing to evaporation coil is determined by the pipe outside heat transfer coefficient again, thereby this invention has increased the heat flux on the unit pipe range, has improved whole heat transfer efficiency.
Two, energy efficient: liquefied ammonia steaming device of the present invention is compared with the prior art liquid ammonia evaporator, and heat transfer efficiency is high, can save the energy consumption of heating steam.
Three, equipment volume is little: liquefied ammonia steaming device of the present invention is compared with the prior art liquid ammonia evaporator, and heat transfer efficiency is high, and under the identical thermic load condition, required coil lengths is little, thereby has reduced equipment volume, has saved the locus.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of evaporation coil;
Fig. 3 is the structure for amplifying schematic diagram of evaporation coil;
Fig. 4 is the structural representation of gas ammonia collecting pipe.
Among the figure, 1 is base plate, and 2 is bearing rib, and 3 is steam pipe coil, 4 is tank body, and 5 is the gas ammonia collecting pipe, and 5-1 is supervisor, 5-2 is the liquid level gauge mouth, and 5-3 is gauge port, and 5-4 is the gas ammonia outlet, 6 is evaporation coil, and 7 is water supplement port, and 8 is top board, 9 is the liquefied ammonia import, and 10 is hand hole, and 11 is overfall, 12 is the liquid level gauge mouth, and 13 is the thermometer mouth, and 14 is sewage draining exit.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
A kind of liquid ammonia evaporator, its structure comprise tank body 4 as shown in Figure 1, are respectively arranged with top board 8 and base plate 1 in the above and below of tank body 4, and base plate 1 is through bearing rib 2 support and connection.Tank body 4 bottoms are provided with steam inlet, liquid level gauge mouth 12, sewage draining exit 15, tank body top is provided with water supplement port 7, hand hole 10, overfall 11, liquid level mouth 12 and thermometer mouth 13, tank body 4 tops are provided with liquefied ammonia import 9, in tank body, be provided with the evaporation coil 6 that links to each other with liquefied ammonia import 9 and steam pipe coil 3, gas ammonia collecting pipe 5, offer perforate at steam pipe coil 3, steam pipe coil 3 is collected the steam that obtains evenly in perforate is injected to water-bath in the tank body 4, makes bath temperature remain on 40-70 ℃.The structure of evaporation coil 6 is shown in Fig. 2-3, adopt finned tube, increased the heat transfer area of the evaporation coil 6 of unit pipe range, thereby increase the heat flux on the unit pipe range, evaporation coil 6 is immersed in the water-bath, liquefied ammonia enters evaporation coil 6 interior heat absorptions from the liquefied ammonia import and is evaporated to gaseous ammonia, output after gas ammonia is collected by gas ammonia collecting pipe 5.The structure of gas ammonia collecting pipe 5 comprises supervisor 5-1 as shown in Figure 4, is provided with liquid level gauge mouth 5-2, gauge port 5-3 and gas ammonia outlet 5-4 at the top of supervisor 5-1.One end of gas ammonia collecting pipe 5 is arranged in the tank body 4, and the other end extends in outside the tank body 4.
This liquid ammonia evaporator passes through first water supplement port 7 to wherein moisturizing before work, make water flooding evaporation coil 6.Then pass into steam by steam pipe coil 3, steam directly enters the housing water-bath by steam pipe coil 3, make coolant-temperature gage reach a certain setting value that process conditions require, its temperature value can be measured by thermometer mouth 12, and controls bath temperature by the steam regulation flow.
After the liquid ammonia evaporator bath temperature reaches the temperature value of technique initialization, can pass into liquefied ammonia by liquefied ammonia import 9, liquefied ammonia is distributed to 6 groups of each evaporation coils through distributor pipe and is subjected to thermal evaporation, the gaseous ammonia of evaporation is collected by gas ammonia collecting pipe 5 again, is delivered to subsequent technique equipment by gas ammonia outlet 5-4 at last.
Novel liquid ammonia evaporimeter of the present invention, efficient is high, compared with prior art, can improve 30～50%, has saved the energy; Volume is little, and compared with prior art, volume reduces 10～30%, saves to take up an area the space.
Claims (8)
1. liquid ammonia evaporator, comprise that tank body, tank body lower part are provided with steam inlet, tank body top is provided with water supplement port, the tank body top is provided with the liquefied ammonia import, be provided with the evaporation coil that links to each other with the liquefied ammonia import and steam pipe coil, gas ammonia collecting pipe in the described tank body, it is characterized in that, described evaporation coil adopts finned tube, increase the heat transfer area of unit pipe range evaporation coil, thereby increased the heat flux on the unit pipe range.
2. a kind of liquid ammonia evaporator according to claim 1 is characterized in that, offers perforate on the described steam pipe coil, and steam pipe coil is collected the steam obtain evenly in perforate is injected to water-bath in the tank body, makes bath temperature remain on 40-70 ℃.
3. a kind of liquid ammonia evaporator according to claim 2 is characterized in that, described evaporation coil is immersed in the water-bath of tank body.
4. a kind of liquid ammonia evaporator according to claim 3 is characterized in that, liquefied ammonia flow in the evaporation coil from the liquefied ammonia import, and the water-bath heat absorption through the outside is evaporated to gaseous ammonia.
5. a kind of liquid ammonia evaporator according to claim 1 is characterized in that, described gas ammonia collecting pipe one end is arranged in the tank body, and the other end extends in outside the tank body.
6. a kind of liquid ammonia evaporator according to claim 5 is characterized in that, described gas ammonia collecting pipe is connected with evaporation coil in tank body.
7. a kind of liquid ammonia evaporator according to claim 5 is characterized in that, described gas ammonia collecting pipe extends in the outer end of tank body and is provided with the gas ammonia outlet, or the inclination vertical with the gas ammonia collecting pipe of this gas ammonia outlet communicates.
8. a kind of liquid ammonia evaporator according to claim 1 is characterized in that, the top of described tank body is provided with overfall, liquid level gauge mouth, thermometer mouth, and the bottom is provided with liquid level gauge mouth, sewage draining exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105687092A CN103007558A (en) | 2012-12-24 | 2012-12-24 | Liquid ammonia evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105687092A CN103007558A (en) | 2012-12-24 | 2012-12-24 | Liquid ammonia evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103007558A true CN103007558A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105687092A Pending CN103007558A (en) | 2012-12-24 | 2012-12-24 | Liquid ammonia evaporator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000140A (en) * | 2016-07-08 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Ammonia-air mixing device for flue gas denitration |
| CN106039742A (en) * | 2016-07-08 | 2016-10-26 | 大唐环境产业集团股份有限公司 | Liquid ammonia evaporation device |
| CN106166455A (en) * | 2016-08-10 | 2016-11-30 | 大唐环境产业集团股份有限公司 | A kind of denitration ammonia gas for pretreatment system |
| CN107126714A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of liquid ammonia evaporator for denitration device line |
| CN110947194A (en) * | 2019-12-26 | 2020-04-03 | 陈玉平 | Heating chamber of Liangwen evaporator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092733U (en) * | 1990-12-25 | 1992-01-08 | 重庆建筑工程学院 | Double surface v-grooved rib pipe for ammonia cold air blower |
| JP2000121195A (en) * | 1998-10-15 | 2000-04-28 | Osaka Gas Co Ltd | Ammonia absorption refrigerating machine |
| CN202070175U (en) * | 2011-05-13 | 2011-12-14 | 成都锐思环保技术有限责任公司 | Steam heating liquid ammonia evaporator used for smoke gas denitration |
| CN202263402U (en) * | 2011-09-29 | 2012-06-06 | 镇江市东方节能设备有限公司 | Liquid ammonia evaporator for fuel gas denitrification |
| CN202376778U (en) * | 2011-09-29 | 2012-08-15 | 镇江市东方节能设备有限公司 | Novel liquid ammonia evaporator |
| CN102743889A (en) * | 2012-07-19 | 2012-10-24 | 北京中新国能环保科技有限公司 | Liquid ammonia evaporator and liquid ammonia evaporation system for flue gas denitration |
| CN203060863U (en) * | 2012-12-24 | 2013-07-17 | 上海建安化工设计有限公司 | Liquid ammonia evaporator |
-
2012
- 2012-12-24 CN CN2012105687092A patent/CN103007558A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092733U (en) * | 1990-12-25 | 1992-01-08 | 重庆建筑工程学院 | Double surface v-grooved rib pipe for ammonia cold air blower |
| JP2000121195A (en) * | 1998-10-15 | 2000-04-28 | Osaka Gas Co Ltd | Ammonia absorption refrigerating machine |
| CN202070175U (en) * | 2011-05-13 | 2011-12-14 | 成都锐思环保技术有限责任公司 | Steam heating liquid ammonia evaporator used for smoke gas denitration |
| CN202263402U (en) * | 2011-09-29 | 2012-06-06 | 镇江市东方节能设备有限公司 | Liquid ammonia evaporator for fuel gas denitrification |
| CN202376778U (en) * | 2011-09-29 | 2012-08-15 | 镇江市东方节能设备有限公司 | Novel liquid ammonia evaporator |
| CN102743889A (en) * | 2012-07-19 | 2012-10-24 | 北京中新国能环保科技有限公司 | Liquid ammonia evaporator and liquid ammonia evaporation system for flue gas denitration |
| CN203060863U (en) * | 2012-12-24 | 2013-07-17 | 上海建安化工设计有限公司 | Liquid ammonia evaporator |
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| 韩宝琦，李树林: "《制冷空调原理及应用》", 30 September 2002, article "空气冷却器（冷风机）的蒸发器", pages: 163 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000140A (en) * | 2016-07-08 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Ammonia-air mixing device for flue gas denitration |
| CN106039742A (en) * | 2016-07-08 | 2016-10-26 | 大唐环境产业集团股份有限公司 | Liquid ammonia evaporation device |
| CN106166455A (en) * | 2016-08-10 | 2016-11-30 | 大唐环境产业集团股份有限公司 | A kind of denitration ammonia gas for pretreatment system |
| CN106166455B (en) * | 2016-08-10 | 2020-01-07 | 大唐环境产业集团股份有限公司 | Denitration ammonia pretreatment systems |
| CN107126714A (en) * | 2017-07-01 | 2017-09-05 | 成都国化环保科技有限公司 | A kind of liquid ammonia evaporator for denitration device line |
| CN110947194A (en) * | 2019-12-26 | 2020-04-03 | 陈玉平 | Heating chamber of Liangwen evaporator |
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Application publication date: 20130403 |