CN104110979A - U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator - Google Patents
U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator Download PDFInfo
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- CN104110979A CN104110979A CN201310135114.2A CN201310135114A CN104110979A CN 104110979 A CN104110979 A CN 104110979A CN 201310135114 A CN201310135114 A CN 201310135114A CN 104110979 A CN104110979 A CN 104110979A
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- heat exchanger
- natural gas
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- recuperator
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Abstract
The invention provides a U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator which comprises a first heat exchanger and a second heat exchanger. The first heat exchanger and the second heat exchanger are placed in an overlapped manner, one ends of the first heat exchanger and the second heat exchanger are connected through an elbow, a circulating water inlet, a circulating water outlet, and a non-condensable gas emptying port and an emptying port are arranged on each of the first heat exchanger and the second heat exchanger; the circulating water outlet of the first heat exchanger is connected with the circulating water inlet of the second heat exchanger; a liquefied natural gas inlet is arranged at the other end of the first heat exchanger, and a gaseous natural gas outlet is arranged at the other end of the second heat exchanger. The U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator has the advantages that the recuperator is free of influence of heat-induced expansion and cold-induced contraction of media large in temperature difference, and is resistant to low temperature and corrosion; hot and cold media form reverse flow, and hot fluid is forced to circulate; a baffle plate is arranged, so that heat transfer effect is improved, heat exchange area is reduced; an overlapped structure is adopted, so that heat exchange area can be guaranteed, heat exchange requirements can be met, occupied area can be saved, space can be utilized effectively, and the like.
Description
Technical field
The invention belongs to heat exchange equipment technical field, especially relate to the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation.
Background technology
In existing technology, natural gas is widely used as a kind of clean energy resource, but most areas is far away apart from air feed point, pipeline gas is difficult to arrive, in the source of the gas place of production, natural gas can be carried out to cooling fluid by gas-liquid volume ratio 625:1 and change into liquified natural gas-LNG, utilize low-temperature tanker to be transported to and use gas point, utilize gasifier to gasify and reduce pressure to add after smelly and enter rear gas pipe network, be applicable to industry and civilian users, liquified natural gas gasifier is generally the gasification of air temperature type form, save the energy, but environment temperature is inoperative lower than 0 ℃ of air-heating type gasifier, this just need to adopt the gasifier of forced heat-exchanging.
In this equipment design, there is following difficult point to need to solve: 1, cold and hot medium excessive temperature differentials, 250 ℃, device structure will consider that heat exchanger tube significantly expands with heat and contract with cold, and considers the low temperature resistant and requirement for anticorrosion of material simultaneously nearly.2, for improving the flow velocity of natural gas in tube side, increase tube side film coefficient of heat transfer, heat exchanger tube quantity is too much unsuitable.3, the required heat exchange area of natural gas gasifying is larger, and heat exchanger tube quantity is few, causes Tube Sheet of Heat Exchanger length to increase, and occupation area of equipment is excessive.4, because required heat exchange area is larger, during structural design, need consider to improve heat exchange efficiency, reduce heat exchange area.
Summary of the invention
The problem to be solved in the present invention is to provide the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation, is especially suitable for the eclipsed form tubulation natural gas gasifier of applying working condition.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation, comprise First Heat Exchanger and the second heat exchanger, described First Heat Exchanger is placed its one end with the second heat exchanger eclipsed form and is connected by elbow; Described First Heat Exchanger includes end socket, official's case, tube sheet with cylindrical shell and is connected successively with the second heat exchanger, in described cylindrical shell, is provided with heat-exchanging tube bundle; On described First Heat Exchanger and the second heat exchanger, be equipped with recirculated water entrance, circulating water outlet, on-condensible gas evacuation port and discharging hole, the circulating water outlet of described First Heat Exchanger is connected with the recirculated water entrance of described the second heat exchanger; The described First Heat Exchanger other end is provided with liquified natural gas entrance, and the described second heat exchanger other end is provided with gaseous natural gas outlet.
Further, described First Heat Exchanger supports by saddle support.
Further, in described cylindrical shell, be provided with deflection plate, pull bar and distance sink tube.
Further, described elbow is 180 ° of elbows.
Further, described First Heat Exchanger and the second heat exchanger are 304 stainless steel tubulation structures.
Advantage and good effect that the present invention has are: owing to adopting 304 stainless steel tubulation structures, not affected by the expanding with heat and contract with cold of medium that the temperature difference is large, and not only low temperature resistant but also anticorrosion; Cold and hot medium forms adverse current, and hot fluid forced circulation, arranges deflection plate, strengthens heat-transfer effect, reduces heat exchange area; Adopt eclipsed form structure, the first and second heat exchanger series connection are used, and can guarantee heat exchange area, meet heat exchange demand, can save floor occupying area again, effectively utilize the advantages such as space.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1.
In figure:
1, discharging hole 2, end socket 3, bobbin carriage
4, flange 5, tube sheet 6, saddle support
7, cylindrical shell 8, deflection plate 9, heat-exchanging tube bundle
10, pull bar and distance sink tube 11, recirculated water entrance 12, circulating water outlet
13, elbow 14, liquified natural gas entrance 15, gaseous natural gas outlet
16, on-condensible gas evacuation port
The specific embodiment
As illustrated in fig. 1 and 2, the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation of the present invention, comprises First Heat Exchanger and the second heat exchanger, and described First Heat Exchanger is placed its one end with the second heat exchanger eclipsed form and is connected by elbow 13; Described First Heat Exchanger includes end socket 2, official's case 3, tube sheet 5 and cylindrical shell 7 and is connected successively with the second heat exchanger, in described cylindrical shell 7, is provided with heat-exchanging tube bundle 9; On described First Heat Exchanger and the second heat exchanger, be equipped with recirculated water entrance 11, circulating water outlet 12, on-condensible gas evacuation port 16 and discharging hole 1, the circulating water outlet 12 of described First Heat Exchanger is connected with the recirculated water entrance 11 of described the second heat exchanger; The described First Heat Exchanger other end is provided with liquified natural gas entrance 14, and the described second heat exchanger other end is provided with gaseous natural gas outlet 15.Described First Heat Exchanger supports by saddle support.In described cylindrical shell 7, be provided with deflection plate 8, pull bar and distance sink tube 10.Heat-exchanging tube bundle 9 is fixing by deflection plate 8, pull bar and distance sink tube 10.Described elbow 13 is 180 ° of elbows 13.Described First Heat Exchanger and the second heat exchanger are 304 stainless steel tubulation structures.Bobbin carriage 3 is connected by flange 4 with tube sheet 5.
The course of work of this example: the liquified natural gas entrance 14 of liquified natural gas from First Heat Exchanger enters in the heat-exchanging tube bundle 9 of First Heat Exchanger, the recirculated water entrance 11 of recirculated water from First Heat Exchanger enters heat exchanger shell pass; In First Heat Exchanger, liquified natural gas by shell and tube heat exchanger tube with warm water countercurrent flow, gasification enters in the heat-exchanging tube bundle 9 of the second heat exchanger by 180 ° of elbows 13, First Heat Exchanger circulating water outlet 12 is connected by flange with the second heat exchanger recirculated water entrance 11, and recirculated water enters the second heat exchanger complete heat exchange in First Heat Exchanger shell side after; In the second heat exchanger, liquified natural gas further gasifies after heating up and finally along airflow direction, from gaseous state outlet mouthful output, enters rear pipe network, and recirculated water is flowed out by the circulating water outlet 12 on the second heat exchanger.
As shown in Figure 1, eclipsed form tubulation natural gas gasifier mainly supports whole equipment by saddle support to structure; The first and second heat exchangers adopt reduplicative forms, dock the docking with the mouth of pipe support by saddle; With 180 ° of elbows 13, the first and second heat exchanger series connection are used; The recirculated water entrance 11 of the first and second heat exchangers is connected by flange with circulating water outlet 12; Natural gas is imported and exported and all by flange, is connected with outside ductwork.
The large flow natural gas recuperator of U-shaped tube bank Warm water circulation, this heat exchanger be after the pluses and minuses of having summed up tubular heat exchanger in conjunction with actual applying working condition, carry out improved a kind of tubulation structure heat exchanger that is applicable to cryogenic media.When meeting heat exchange demand, can save floor space, make full use of space.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (5)
1. the large flow natural gas recuperator of U-shaped tube bank Warm water circulation, is characterized in that: comprise First Heat Exchanger and the second heat exchanger, described First Heat Exchanger is placed its one end with the second heat exchanger eclipsed form and is connected by elbow; Described First Heat Exchanger includes end socket, official's case, tube sheet with cylindrical shell and is connected successively with the second heat exchanger, in described cylindrical shell, is provided with heat-exchanging tube bundle; On described First Heat Exchanger and the second heat exchanger, be equipped with recirculated water entrance, circulating water outlet, on-condensible gas evacuation port and discharging hole, the circulating water outlet of described First Heat Exchanger is connected with the recirculated water entrance of described the second heat exchanger; The described First Heat Exchanger other end is provided with liquified natural gas entrance, and the described second heat exchanger other end is provided with gaseous natural gas outlet.
2. the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation according to claim 1, is characterized in that: described First Heat Exchanger supports by saddle support.
3. the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation according to claim 1, is characterized in that: in described cylindrical shell, be provided with deflection plate, pull bar and distance sink tube.
4. the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation according to claim 1, is characterized in that: described elbow is 180 ° of elbows.
5. the large flow natural gas recuperator of a kind of U-shaped tube bank Warm water circulation according to claim 1, is characterized in that: described First Heat Exchanger and the second heat exchanger are 304 stainless steel tubulation structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135114.2A CN104110979A (en) | 2013-04-18 | 2013-04-18 | U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135114.2A CN104110979A (en) | 2013-04-18 | 2013-04-18 | U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator |
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| Publication Number | Publication Date |
|---|---|
| CN104110979A true CN104110979A (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310135114.2A Pending CN104110979A (en) | 2013-04-18 | 2013-04-18 | U-shaped-pipe-bundle warm-water-circulating large-flow natural gas recuperator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953620A (en) * | 2016-06-23 | 2016-09-21 | 江阴中南重工有限公司 | Serial efficient floating heat exchanger |
| CN106017150A (en) * | 2016-07-21 | 2016-10-12 | 黄志钊 | U-shaped shell type liquefied natural gas gasifier |
| CN107643007A (en) * | 2017-09-30 | 2018-01-30 | 苏州海陆重工股份有限公司 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
-
2013
- 2013-04-18 CN CN201310135114.2A patent/CN104110979A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953620A (en) * | 2016-06-23 | 2016-09-21 | 江阴中南重工有限公司 | Serial efficient floating heat exchanger |
| CN106017150A (en) * | 2016-07-21 | 2016-10-12 | 黄志钊 | U-shaped shell type liquefied natural gas gasifier |
| CN107643007A (en) * | 2017-09-30 | 2018-01-30 | 苏州海陆重工股份有限公司 | Heat exchange pipe mechanism in blast furnace gas heat exchange device |
| CN107643007B (en) * | 2017-09-30 | 2024-02-23 | 苏州海陆重工股份有限公司 | Heat exchange tube mechanism in blast furnace gas heat exchanger |
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Application publication date: 20141022 |