CN113154250A - LNG vaporizing device - Google Patents
LNG vaporizing device Download PDFInfo
- Publication number
- CN113154250A CN113154250A CN202110462499.8A CN202110462499A CN113154250A CN 113154250 A CN113154250 A CN 113154250A CN 202110462499 A CN202110462499 A CN 202110462499A CN 113154250 A CN113154250 A CN 113154250A
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- Prior art keywords
- heater
- natural gas
- lng
- gas
- lng vaporization
- Prior art date
- 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.)
- Pending
Links
- 230000008016 vaporization Effects 0.000 title claims abstract description 78
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 188
- 239000003345 natural gas Substances 0.000 claims abstract description 93
- 238000009834 vaporization Methods 0.000 claims abstract description 76
- 239000007789 gas Substances 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 230000008676 import Effects 0.000 claims abstract description 13
- 239000006200 vaporizer Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002309 gasification Methods 0.000 claims 3
- 238000009413 insulation Methods 0.000 claims 1
- 239000003949 liquefied natural gas Substances 0.000 description 83
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a LNG vapourizing unit, includes LNG vaporization jar, heater, circulating pump, the LNG vaporization jar contains LNG vaporization jar import, natural gas export, the heater contains the heating pipe, through natural gas import that pipeline and LNG vaporization jar natural gas export are connected, be located circulating gas export, the natural gas export of the heating pipe middle part of heater, the circulating pump import is through the circulating gas exit linkage of pipeline and heater, circulating pump export and the natural gas access linkage of LNG vaporization jar. The LNG vaporization tank is low in effect speed and easy to freeze by arranging the LNG vaporization tank.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to an LNG vaporization device.
Background
Liquefied Natural Gas (LNG), the main component of which is methane, is known as the cleanest fossil energy on earth. The liquefied natural gas is colorless, tasteless, nontoxic and noncorrosive, the volume of the liquefied natural gas is about 1/625 of the volume of the same amount of gaseous natural gas, and the mass of the liquefied natural gas is only about 45 percent of the same volume of water.
The LNG is required to be vaporized into a gaseous state in the use process of the LNG, and the problems that the liquefaction response speed is low, the LNG is easy to freeze and the like exist in the use process of a common LNG vaporizer.
Disclosure of Invention
In order to solve the problems, the invention provides an LNG vaporization device, which solves the problem of low vaporization response speed by arranging an LNG vaporization tank; the problem of easy icing is solved by arranging the gas internal circulation device.
The invention is realized by the following technical scheme, an LNG vaporization device comprises: LNG vaporization jar, heater, circulating pump, LNG vaporization jar contains LNG vaporization jar import, LNG vaporization jar natural gas export, the heater contains the heating pipe, the heater natural gas import that is connected with LNG vaporization jar natural gas export through the pipeline, is located the heater circulation gas export of the heating pipe middle part of heater, is located the terminal heater natural gas export of heater, the circulating pump import is through the natural gas access connection of the circulation gas exit linkage of pipeline and heater, circulation pump export and LNG vaporization jar.
Further, LNG vaporization jar outside contains the heat preservation, can avoid the freezing and the purpose of storing LNG in the LNG vaporization jar of LNG vaporization jar outer skin through setting up the heat preservation.
Furthermore, a circulating pump valve is arranged between the outlet of the circulating pump and the natural gas inlet of the LNG vaporization tank, and the flow of the outlet of the circulating pump can be adjusted by arranging the valve.
Furthermore, the circulating pump valve is a ball valve, a stop valve or a plunger valve.
Further, be equipped with cavity and the upper portion in the LNG vaporization jar and establish the gas distributor of trompil structure, the gas distributor lower extreme passes through the pipeline and is connected with LNG vaporization jar natural gas import inboard, can make gaseous more even contact with LNG through setting up gas distributor, improves heat transfer efficiency.
Further, the upper side in the LNG vaporization tank is provided with a gas-liquid separator, and the gas-liquid separator is of a flat plate structure with a gas channel inside.
Further, the heater sets up and has the circulation natural gas import that is located heater circulation gas export before, the heater contains the gas heating circulating pump, the circulating pump import passes through the heater circulation gas exit linkage of pipeline and heater, the gas heating circulating pump export is connected with heater circulation natural gas import.
Further, a gas heating circulating pump valve is arranged between the outlet of the gas heating circulating pump and the inlet of the heater circulating natural gas.
Further, the gas heating circulating pump valve is a ball valve, a stop valve or a plunger valve.
Drawings
Further features and further advantages of the device according to the invention are obtained from the following description of a preferred embodiment and with reference to the drawings. The invention is further illustrated below on the basis of a schematic drawing.
In the drawings:
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of an LNG vaporization tank of the present invention;
fig. 3 is another schematic diagram of the structure of the present invention.
The system comprises a LNG vaporization tank, a heater, a circulating pump, a gas heating circulating pump, a heater natural gas outlet, a heater, a heating pipe, a heating pump inlet, a circulating pump valve, a gas heating circulating pump inlet, a gas heating circulating pump outlet, a gas heating circulating pump valve, a gas heating circulating pump outlet and a gas heating circulating pump valve, wherein the LNG vaporization tank, the heater, the gas circulating pump, the gas heating circulating pump, the heater, the gas heating circulating pump and the gas heating circulating pump are arranged in a pipeline.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the LNG vaporizer according to the present invention includes an LNG vaporizer 1, a heater 2, a circulation pump 3, a gas heating circulation pump 4, an LNG vaporizer natural gas outlet 101, an LNG vaporizer inlet 102, an LNG vaporizer natural gas inlet 103, a heater natural gas inlet 201, a heater natural gas outlet 202, a heater circulation gas outlet 203, a heating pipe 204, a circulation pump inlet 301, a circulation pump inlet 302, and a circulation pump valve 303. The heater 2 comprises a heating pipe 204, a heater natural gas inlet 201 connected with the LNG vaporization tank natural gas outlet 101 through a pipeline, a heater circulating gas outlet 203 in the middle of the heating pipe 204 of the heater 2, and a heater natural gas outlet 202 located at the tail end of the heater 2, wherein a circulating pump inlet 301 is connected with the circulating gas outlet 203 of the heater 2 through a pipeline, and a circulating pump outlet 301 is connected with the LNG vaporization tank natural gas inlet 303.
When the LNG vaporizer is used, LNG is injected into the LNG vaporizer 1 through the LNG vaporizer inlet 102, the LNG in the LNG vaporizer 1 is vaporized into gaseous natural gas, the gaseous natural gas flows through the LNG vaporizer natural gas outlet 101 and then flows into the heater natural gas inlet 201 through a pipeline, the gaseous natural gas enters the heater 2 through the heater natural gas inlet 201 and then exchanges heat with the environment through the heating pipe 204, the natural gas in the heat exchange pipe 204 is heated, a part of heated natural gas is introduced into the circulating pump inlet 301 through the heater circulating gas outlet 203, is pressurized through the circulating pump 3, and then enters the LNG vaporizer 1 through the pipeline and is connected with the LNG vaporizer natural gas inlet 103 through the circulating pump outlet 302, the heated natural gas enters the LNG vaporizer 1 to contact with the liquid natural gas to heat the liquid natural gas, the liquid natural gas is heated and vaporized, and the gaseous natural gas flows into the LNG heater inlet 201 through the pipeline after flowing through the LNG vaporizer natural gas outlet 101, after entering the heater 2 through the heater natural gas inlet 201, the natural gas exchanges heat with the environment through the heating pipe 204, the natural gas in the heat exchange pipe 204 is heated, one part of the natural gas reenters the circulating pump 3, and the other part of the natural gas flows out of the heater through the heater natural gas outlet 202 to finish the vaporization process.
In order to adjust the vaporization volume, a circulating pump valve 303 is arranged between the outlet 302 of the circulating pump and the natural gas inlet 103 of the LNG vaporization tank, the natural gas volume entering the LNG vaporization tank 1 can be adjusted by adjusting the circulating pump valve 303, and the vaporization volume is adjusted by adjusting the natural gas volume by adjusting the heat entering the LNG vaporization tank 1, so that the purpose of adjusting the vaporization volume is achieved. The circulating pump valve is a ball valve, a stop valve or a plunger valve.
This technical scheme's characteristics are through gaseous natural gas heating LNG, and gaseous natural gas is big with LNG direct contact heat transfer efficiency to gaseous natural gas is lower than the LNG temperature as heating medium freezing point temperature, so can not freeze in the use, thereby influences heat exchange efficiency. Meanwhile, LNG is heated by natural gas, the vaporization amount can be controlled by adjusting the amount of the natural gas entering the LNG vaporization tank, the introduced natural gas is more in vaporization amount, so that the vaporization amount and the vaporization speed can be conveniently controlled, and the corresponding vaporization speed of the system can be greatly increased.
Referring to fig. 2, in order to avoid the influence of environmental heat transfer on the LNG vaporization in the LNG vaporization tank 1, an insulating layer 105 is disposed on the outer side of the LNG vaporization tank 1, and after the insulating layer 105 is disposed, the LNG vaporization tank 1 can be used as an LNG storage tank to store natural gas under the condition that no natural gas enters the LNG vaporization tank through the LNG vaporization tank natural gas inlet 103, so that the LNG vaporization can be terminated quickly when the LNG vaporization is not required.
Referring to fig. 2, in order to promote sufficient contact between the natural gas and the LNG, a gas distributor 104 is provided at a lower portion of the LNG vaporization tank, and a lower end of the gas distributor is connected to an inner side of a natural gas inlet of the LNG vaporization tank through a pipe. The gas distributor 104 is hollow, the upper part of the gas distributor 104 is provided with the gas distributor 104 with a pore structure, and the lower end of the gas distributor 104 is connected with the inner side of the natural gas inlet 103 of the LNG vaporization tank through a pipeline. The natural gas enters the natural gas inlet 103, then enters the gas distributor 104 through a pipeline, and then uniformly enters the LNG vaporization tank through the opening on the upper side of the gas distributor 104, so that the natural gas is fully contacted with the LNG for heat exchange.
Referring to fig. 2, in order to avoid the LNG from being carried by the natural gas in the LNG vaporization tank 1, a gas-liquid separator 106 is disposed at an upper side inside the LNG vaporization tank 1, the gas-liquid separator 106 is a flat plate structure having a gas channel therein, and the carried LNG passes through the gas-liquid separator 106 due to its large diameter and is separated, thereby preventing the LNG from being carried into the vaporizer 2.
Response speed and icing problem in the vaporization process have been solved through above-mentioned technical scheme, but the natural gas temperature after the vaporization is lower, can make heater 2 surface icing after getting into heater 2, influence the heat transfer with the environment. In order to solve this problem, a natural gas circulation device is added to the heater 2.
With reference to fig. 3, the heater 2 is provided with a circulating natural gas inlet 205 located in front of a heater circulating gas outlet 203 of the heater 2, the heater 2 comprises a gas heating circulating pump 4, an inlet 401 of the circulating pump is connected with the heater circulating gas outlet 203 of the heater through a pipeline, and an outlet 402 of the gas heating circulating pump is connected with the heater circulating natural gas inlet 205. When the natural gas heating device is used, gaseous natural gas flows through the LNG vaporization tank natural gas outlet 101 and then flows into the heater natural gas inlet 201 through a pipeline, enters the heater 2 through the heater natural gas inlet 201 and then exchanges heat with the environment through the heating pipe 204, the natural gas in the heat exchange pipe 204 is heated, a part of the natural gas reenters the circulating pump 3, a part of the natural gas enters the gas heating circulating pump 4, the heated natural gas is reentered into the front end of the heater 2 by the gas heating circulating pump 4 and is mixed with the cooler natural gas at the front end of the heater 2, so that the temperature of the natural gas in the heater 2 is increased, and the phenomenon that the.
In order to regulate the amount of circulating gas, a gas heating circulating pump valve 403 is arranged between the gas heating circulating pump outlet 402 and the heater circulating natural gas inlet 205. The natural gas amount entering the heater circulating natural gas inlet 205 can be adjusted by adjusting the gas heating circulating pump valve 403, the temperature of the mixed natural gas is adjusted by adjusting the natural gas amount, and the influence of icing on the surface of the heater 2 on heat exchange is avoided by setting the proper natural gas temperature. The gas heating circulation pump valve 403 is a ball valve, a stop valve, or a plunger valve.
It must be noted that the invention has been described herein in several preferred embodiments. It is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various combinations or modifications of its features and several other applications included within the scope of the invention as defined in the appended claims. The features mentioned in connection with the different embodiments can also be utilized in connection with other embodiments and/or combined in different combinations within the basic concept of the invention, if so desired and technical possibilities exist for these.
Claims (9)
1. An LNG vaporization unit, comprising: LNG vaporization jar, heater, circulating pump, LNG vaporization jar contains LNG vaporization jar import, LNG vaporization jar natural gas export, the heater contains the heating pipe, the heater natural gas import that is connected with LNG vaporization jar natural gas export through the pipeline, is located the heater circulation gas export of the heating pipe middle part of heater, is located the terminal heater natural gas export of heater, the circulating pump import is through the circulation gas exit linkage of pipeline and heater, circulating pump export and LNG vaporization jar natural gas access connection.
2. The LNG vaporization device of claim 1, wherein an insulation layer is provided outside the LNG vaporization tank.
3. The LNG gasification apparatus of claim 1, wherein a circulation pump valve is disposed between the circulation pump outlet and the LNG vaporizer natural gas inlet.
4. The LNG vaporization device of claim 3, wherein the valve is a ball valve, a stop valve, or a plunger valve.
5. The LNG vaporization device of claim 1, wherein the LNG vaporization tank is provided at a lower portion thereof with a hollow gas distributor having an open structure at an upper portion thereof, and a lower end of the gas distributor is connected to an inner side of a natural gas inlet of the LNG vaporization tank through a pipe.
6. The LNG vaporization device according to claim 1, wherein the LNG vaporization tank is provided with a gas-liquid separator at an upper side inside thereof, and the gas-liquid separator has a flat plate structure with a gas passage therein.
7. The LNG gasification device of claim 1, wherein the heater is provided with a heater circulating natural gas inlet before a heater circulating gas outlet, the heater comprises a gas heating circulating pump, the circulating pump inlet is connected with the heater circulating gas outlet through a pipeline, and the gas heating circulating pump outlet is connected with the heater circulating natural gas inlet.
8. The LNG gasification apparatus of claim 7, wherein a gas heating circulation pump valve is disposed between the gas heating circulation pump outlet and the heater circulation natural gas inlet.
9. The LNG vaporization device of claim 8, wherein the valve is a ball valve, a stop valve, or a plug valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110462499.8A CN113154250A (en) | 2021-04-27 | 2021-04-27 | LNG vaporizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110462499.8A CN113154250A (en) | 2021-04-27 | 2021-04-27 | LNG vaporizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113154250A true CN113154250A (en) | 2021-07-23 |
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ID=76871930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110462499.8A Pending CN113154250A (en) | 2021-04-27 | 2021-04-27 | LNG vaporizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113154250A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168995A (en) * | 1984-07-30 | 1985-09-02 | Hitachi Ltd | Preheater for liquefied gas |
| CN1793715A (en) * | 2006-01-12 | 2006-06-28 | 河南中原绿能高科有限责任公司 | Air-temperature type liquefied natural gas vaporizer |
| US20070214806A1 (en) * | 2006-03-15 | 2007-09-20 | Solomon Aladja Faka | Continuous Regasification of LNG Using Ambient Air |
| CN203979872U (en) * | 2014-07-27 | 2014-12-03 | 苟仲武 | A kind of new liquid gasification installation |
| CN206093507U (en) * | 2016-10-08 | 2017-04-12 | 王合顺 | White equipment of supplementaryization of LNG air temperature vaporize |
| CN109000151A (en) * | 2018-09-30 | 2018-12-14 | 洛阳天泽气体有限公司 | A kind of liquefied ammonia recirculated water carburetor arrangement with energy conservation and shock-absorbing function |
| CN112097108A (en) * | 2019-06-18 | 2020-12-18 | 无锡辉腾科技有限公司 | Novel booster-type gasifier |
| CN212745975U (en) * | 2020-07-27 | 2021-03-19 | 宜昌力能液化燃气有限公司 | Rewarming system of LNG vaporizer |
-
2021
- 2021-04-27 CN CN202110462499.8A patent/CN113154250A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60168995A (en) * | 1984-07-30 | 1985-09-02 | Hitachi Ltd | Preheater for liquefied gas |
| CN1793715A (en) * | 2006-01-12 | 2006-06-28 | 河南中原绿能高科有限责任公司 | Air-temperature type liquefied natural gas vaporizer |
| US20070214806A1 (en) * | 2006-03-15 | 2007-09-20 | Solomon Aladja Faka | Continuous Regasification of LNG Using Ambient Air |
| CN203979872U (en) * | 2014-07-27 | 2014-12-03 | 苟仲武 | A kind of new liquid gasification installation |
| CN206093507U (en) * | 2016-10-08 | 2017-04-12 | 王合顺 | White equipment of supplementaryization of LNG air temperature vaporize |
| CN109000151A (en) * | 2018-09-30 | 2018-12-14 | 洛阳天泽气体有限公司 | A kind of liquefied ammonia recirculated water carburetor arrangement with energy conservation and shock-absorbing function |
| CN112097108A (en) * | 2019-06-18 | 2020-12-18 | 无锡辉腾科技有限公司 | Novel booster-type gasifier |
| CN212745975U (en) * | 2020-07-27 | 2021-03-19 | 宜昌力能液化燃气有限公司 | Rewarming system of LNG vaporizer |
Non-Patent Citations (1)
| Title |
|---|
| 雒淑娟等: "橇装式液化天然气加气站泄放气体处理及其加热器计算", 《石油化工设备》 * |
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| PB01 | Publication | ||
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Application publication date: 20210723 |