CN203837406U - Precooling device for raw natural gas and mixed refrigerant - Google Patents
Precooling device for raw natural gas and mixed refrigerant Download PDFInfo
- Publication number
- CN203837406U CN203837406U CN201420189588.5U CN201420189588U CN203837406U CN 203837406 U CN203837406 U CN 203837406U CN 201420189588 U CN201420189588 U CN 201420189588U CN 203837406 U CN203837406 U CN 203837406U
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- China
- Prior art keywords
- natural gas
- raw natural
- refrigerant
- outlet
- heat exchanger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 239000003507 refrigerant Substances 0.000 title claims abstract description 75
- 239000003345 natural gas Substances 0.000 title claims abstract description 68
- 238000005057 refrigeration Methods 0.000 claims description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 239000003949 liquefied natural gas Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a precooling device for a raw natural gas and a mixed refrigerant. The precooling device comprises a raw natural gas precooling heat exchanger, a mixed refrigerant precooling heat exchanger and a refrigerator, wherein a raw natural gas inlet and a raw natural gas outlet, a refrigerant inlet communicated with the outlet of the refrigerant and a refrigerant outlet communicated with the inlet of the refrigerant are formed in the raw natural gas precooling heat exchanger; a mixed refrigerant inlet, a mixed refrigerant outlet, a refrigerant inlet communicated with the outlet of the refrigerator and a refrigerant outlet communicated with the inlet of the refrigerator are formed in the mixed refrigerant precooling heat exchanger. Before liquefaction of natural gas, the raw natural gas and the mixed refrigerant are precooled in the raw natural gas precooling heat exchanger and the mixed refrigerant precooling heat exchanger, respectively, and therefore, the temperatures of the raw natural gas and the mixed refrigerant are reduced, and the temperature and the yield of the liquefied natural gas are satisfied.
Description
Technical field
The utility model relates to technical field of chemical, more particularly, relates to the pre-cooler of a kind of raw natural gas and mix refrigerant.
Background technology
In the liquefaction process of existing gaseous natural gas, raw natural gas and mix refrigerant are directly inputted in natural gas liquefaction ice chest and carried out heat exchange, realize the object of the raw natural gas liquefaction to gaseous state.
But actual production process, raw natural gas and mix refrigerant, to enter before natural gas liquefaction ice chest temperature all higher, cause the temperature of liquefied natural gas not reach requirement, underproduce.
By the above, how a kind of cooling device is provided, solve raw natural gas and mix refrigerant temperature drift, cause the temperature of liquefied natural gas not reach requirement, underproduce problem, becomes those skilled in the art and needs badly the technical problem of solution.
Utility model content
In view of this, the utility model provides the pre-cooler of a kind of raw natural gas and mix refrigerant, to reduce the temperature of raw natural gas and mix refrigerant, the temperature of liquefied natural gas and output is met the requirements.
For achieving the above object, the utility model provides following technical scheme:
A pre-cooler for raw natural gas and mix refrigerant, comprises raw natural gas precool heat exchanger device, mix refrigerant precool heat exchanger device and refrigeration machine;
On raw natural gas precool heat exchanger device, be provided with raw natural gas entrance, raw natural gas outlet, the refrigerant inlet being connected with the outlet of refrigeration machine and the refrigerant outlet being connected with the entrance of refrigeration machine;
On mix refrigerant precool heat exchanger device, be provided with mix refrigerant entrance, mix refrigerant outlet, the refrigerant inlet being connected with the outlet of refrigeration machine and the refrigerant outlet being connected with the entrance of refrigeration machine.
Preferably, in above-mentioned pre-cooler, refrigeration machine is ammonia machine.
The utility model provides the pre-cooler of a kind of raw natural gas and mix refrigerant, comprises raw natural gas precool heat exchanger device, mix refrigerant precool heat exchanger device and refrigeration machine.Wherein, on raw natural gas precool heat exchanger device, be provided with raw natural gas entrance, raw natural gas outlet, and the refrigerant inlet being connected with the outlet of refrigeration machine, the refrigerant outlet being connected with the entrance of refrigeration machine; On mix refrigerant precool heat exchanger device, be provided with mix refrigerant entrance, mix refrigerant outlet, and the refrigerant inlet being connected with the outlet of refrigeration machine, and the refrigerant outlet being connected with the entrance of refrigeration machine.
Before pre-cooler provided by the utility model is arranged to natural gas liquefaction ice chest, raw natural gas entrance is connected with raw natural gas source, raw natural gas outlet is connected with gas inlet in natural gas liquefaction ice chest; By mix refrigerant entrance with mix refrigerant source to being communicated with, mix refrigerant outlet is connected with mix refrigerant entrance in natural gas liquefaction ice chest.
Carrying out before natural gas liquefaction, raw natural gas, mix refrigerant carry out precooling respectively in raw natural gas precool heat exchanger device, mix refrigerant precool heat exchanger device, reduce the temperature of raw natural gas and mix refrigerant, make the natural gas after liquefaction there is satisfactory temperature and output.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the annexation schematic diagram of the pre-cooler of the utility model natural gas that embodiment supplies raw materials and mix refrigerant.
Detailed description of the invention
The utility model embodiment discloses the pre-cooler of a kind of raw natural gas and mix refrigerant, to solve raw natural gas and mix refrigerant temperature is higher, the temperature of liquefied natural gas and the undesirable problem of output.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in fig. 1, the pre-cooler that the present embodiment provides comprises raw natural gas precool heat exchanger device 1, mix refrigerant precool heat exchanger device 2 and refrigeration machine 3.Wherein, on raw natural gas precool heat exchanger device 1, be provided with raw natural gas entrance 11, raw natural gas outlet 12, and the refrigerant inlet being connected with the outlet 32 of refrigeration machine 3, the refrigerant outlet being connected with the entrance 31 of refrigeration machine 3; On mix refrigerant precool heat exchanger device 2, be provided with mix refrigerant entrance 21, mix refrigerant outlet 22, and the refrigerant inlet being connected with the outlet 32 of refrigeration machine 3, and the refrigerant outlet being connected with the entrance 31 of refrigeration machine 3.
Before pre-cooler provided by the utility model is arranged to natural gas liquefaction ice chest 4, raw natural gas entrance 11 is connected with raw natural gas source, raw natural gas outlet 12 is connected with gas inlet in natural gas liquefaction ice chest 4; By mix refrigerant entrance 21 with mix refrigerant source to being communicated with, mix refrigerant outlet 22 is connected with mix refrigerant entrance in natural gas liquefaction ice chest 4.
Carrying out before natural gas liquefaction, first raw natural gas enters in raw natural gas precool heat exchanger device 1, and the cold-producing medium that refrigeration machine 3 provides carries out heat exchange.Raw natural gas cooling, is admitted to natural gas liquefaction ice chest afterwards; Cold-producing medium heat absorption heats up, and is sent back to afterwards in refrigeration machine 3 by cooling, liquefaction.Mix refrigerant first the cold-producing medium providing with refrigeration machine 3 in mix refrigerant precool heat exchanger device 2 is provided and carries out heat exchange.Mix refrigerant is admitted to natural gas liquefaction ice chest after further being lowered the temperature; Cold-producing medium heat absorption heats up, and is sent back to afterwards in refrigeration machine 3 by cooling, liquefaction.
Raw natural gas and mix refrigerant all carry out precooling treatment, have reduced temperature, make the natural gas after liquefaction have satisfactory temperature and output.
Concrete, in the pre-cooler providing at above-described embodiment, refrigeration machine 3 is ammonia machine.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a pre-cooler for raw natural gas and mix refrigerant, is characterized in that, comprises raw natural gas precool heat exchanger device, mix refrigerant precool heat exchanger device and refrigeration machine;
On described raw natural gas precool heat exchanger device, be provided with raw natural gas entrance, raw natural gas outlet, the refrigerant inlet being connected with the outlet of described refrigeration machine and the refrigerant outlet being connected with the entrance of described refrigeration machine;
On described mix refrigerant precool heat exchanger device, be provided with mix refrigerant entrance, mix refrigerant outlet, the refrigerant inlet being connected with the outlet of described refrigeration machine and the refrigerant outlet being connected with the entrance of described refrigeration machine.
2. pre-cooler according to claim 1, is characterized in that, described refrigeration machine is ammonia machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420189588.5U CN203837406U (en) | 2014-04-18 | 2014-04-18 | Precooling device for raw natural gas and mixed refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420189588.5U CN203837406U (en) | 2014-04-18 | 2014-04-18 | Precooling device for raw natural gas and mixed refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837406U true CN203837406U (en) | 2014-09-17 |
Family
ID=51515233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420189588.5U Expired - Lifetime CN203837406U (en) | 2014-04-18 | 2014-04-18 | Precooling device for raw natural gas and mixed refrigerant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203837406U (en) |
-
2014
- 2014-04-18 CN CN201420189588.5U patent/CN203837406U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |