CN100507342C - Safety emptying device for liquefied natural gas factory - Google Patents
Safety emptying device for liquefied natural gas factory Download PDFInfo
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- CN100507342C CN100507342C CNB2005100180325A CN200510018032A CN100507342C CN 100507342 C CN100507342 C CN 100507342C CN B2005100180325 A CNB2005100180325 A CN B2005100180325A CN 200510018032 A CN200510018032 A CN 200510018032A CN 100507342 C CN100507342 C CN 100507342C
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- emptying
- natural gas
- liquefied natural
- lng
- tank
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Abstract
The present invention relates to liquefied natural gas plant safety blow-down equipment. It is a technique for eliminating flame for liquefied natural gas equipment. Said invention is characterized by that in the plant all the low-temperature liquefied natural gas and its vapor having need of making blow-down can be heated by aluminium-made carburator and made into normal temperature gas-state natural gas lighter than air, and is discharged into blow-down manifold together with other normal temperature gas having need of making blow-down and discharged into atomosphere by means of blow-down barrel. On the upstream of said blow-down barrel a water sealing tank and a fire-resisting device are set so as to produce the action of preventing backfire.
Description
One, technical field: what the present invention relates to is a kind of liquefied natural gas plant flare elimination technology, particularly safety emptying device for liquefied natural gas factory.
Two, background technique: liquefied natural gas (LNG) plant has some rock gases or other inflammable gas because security needs are discharged in the atmosphere in driving, parking and normal productive process.Be discharged into rock gas or other inflammable gas in the atmosphere in order to handle these, prior art is to adopt the torch facility that these rock gases or other inflammable gas are burnt both at home and abroad.Some are arranged is LNG Liquefied natural gas of low temperature because these are discharged into rock gas in the atmosphere, and the upstream of prior art torch facility on the emptying house steward is provided with the gas-liquid separator of charged heater, LNG Liquefied natural gas is heated into enter the torch facility again behind the gas and burn.Because of the LNG Liquefied natural gas and the temperature of steam or other low temperature inflammable gas thereof of discharging very low, the material of the blow-down pipe valve pipe fitting of prior art liquefied natural gas (LNG) plant, gas-liquid separator, torch facility is 0Cr18Ni9 low temperature stainless steel, increase material purchases expense, operating expenses and the difficulty of construction of liquefied natural gas (LNG) plant, be unfavorable for shortening the procurement cycle of material, equipment and the duration of whole factory.In order to prevent the tempering of torch facility, guarantee the safety of liquefied natural gas (LNG) plant, prior art enters the emptying house steward with a certain amount of rock gas and makes molecular seal gas, and keeping whole emptying house steward's malleation, and the facility that applies a torch is burnt.For guaranteeing that the inflammable gas that factory at any time discharges all can be burnt, prior art torch facility is provided with incandescent light, and small amounts of natural gas is given the incandescent light air feed always, guarantees that incandescent light is in combustion regime always.Because factory burns to molecular seal gas and incandescent light supply rock gas and by the torch facility, has additionally increased the consumption of liquefied natural gas (LNG) plant to rock gas, is unfavorable for the reduction of factory's energy consumption and the raising of economic benefit always.
Three, summary of the invention: the objective of the invention is to overcome the prior art above shortcomings, a kind of safety emptying device for liquefied natural gas factory is provided, the object of the present invention is achieved like this, be by the emptying tube, flame trap, water sealed tank, liquefied natural gas (LNG) tank, liquefied natural gas (LNG) tank emptying gas heater, ice chest, ice chest emptying LNG Liquefied natural gas heater, the emptying house steward, the pipeline valve pipe fitting is formed by connecting, it is characterized in that: the inlet of ice chest is provided with carbon steel natural gas line valve pipe fitting, outlet is connected with liquefied natural gas (LNG) tank by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare, and ice chest also is provided with refrigerant lines valve pipe fitting; Liquefied natural gas (LNG) tank is a double insulation structure, and its gaseous phase outlet is connected with liquefied natural gas (LNG) tank emptying gas heater by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare; Liquefied natural gas (LNG) tank emptying gas heater outlet is connected with the emptying house steward by carbon steel pipe line valve pipe fitting; The outlet of ice chest is connected with ice chest emptying LNG Liquefied natural gas heater by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare, and ice chest emptying LNG Liquefied natural gas heater outlet is connected with the emptying house steward by carbon steel pipe line valve pipe fitting; Normal temperature blow-down pipe valve pipe fitting is connected with the emptying house steward, and the emptying house steward is connected with the inlet of water sealed tank, and the outlet of water sealed tank is connected with the emptying tube by carbon steel pipe line valve pipe fitting; Water sealed tank also is provided with carbon steel water-line valve pipe fitting and carbon steel flowing line valve pipe fitting; Pipeline between water sealed tank and the emptying tube is provided with flame trap; Ice chest is aluminium product, liquefied natural gas (LNG) tank emptying gas heater, ice chest emptying LNG Liquefied natural gas heater are the aluminium-made air temp type vaporizer, and the material of pipeline valve pipe fitting, emptying house steward, water sealed tank, flame trap and the emptying tube in liquefied natural gas (LNG) tank emptying gas heater, ice chest emptying LNG Liquefied natural gas heater downstream is the normal temperature carbon steel.
Adopt the present invention, factory all need the low-temperature liquefaction rock gas and the steam thereof of emptying all to be heated to be lighter-than-air normal temperature gaseous natural gas by the aluminium-made air temp type vaporizer, thereby the pipeline valve pipe fitting of aluminium-made air temp type downstream from vaporizer, the emptying house steward, water sealed tank, the material of flame trap and emptying tube is the normal temperature carbon steel, and cancelled the 0Cr18Ni9 low temperature stainless steel gas liquid/gas separator of charged heater, significantly reduced 0Cr18Ni9 low temperature stainless steel equipment in the liquefied natural gas (LNG) plant, the consumption of pipeline valve pipe fitting, reduced equipment, the buying expenses of material and operating expenses, reduce difficulty of construction, helped shortening the construction period of whole factory; And because the present invention is provided with flame trap and water sealed tank, played the effect that prevents tempering, cancelled the discharging of molecular seal gas and incandescent light with rock gas, reduced the consumption of liquefied natural gas (LNG) plant to rock gas, factory's energy consumption and operating cost have been reduced, improve the economic benefit of factory, be particularly suitable for middle-size and small-size liquefied natural gas (LNG) plant flare elimination.
Four, description of drawings: Fig. 1 is the schematic representation of safety emptying device for liquefied natural gas factory, among the figure: 1, emptying tube 2, water sealed tank 3, flame trap 4, liquefied natural gas (LNG) tank 5, liquefied natural gas (LNG) tank Han Engel curve gas heater 6, ice chest 7, ice chest emptying LNG Liquefied natural gas heater 8, emptying house steward 9, pipeline valve pipe fitting
Five, embodiment: in Fig. 1, the inlet of ice chest 6 is provided with carbon steel natural gas line valve pipe fitting 9, its outlet is connected with liquefied natural gas (LNG) tank 4 by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare 9, also is provided with refrigerant lines valve pipe fitting 9 in the ice chest 6; Liquefied natural gas (LNG) tank 4 is a double insulation structure, and its gaseous phase outlet is connected with liquefied natural gas (LNG) tank emptying gas heater 5 by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare 9; 5 outlets of liquefied natural gas (LNG) tank emptying gas heater are connected with emptying house steward 8 by carbon steel pipe line valve pipe fitting 9; The outlet of ice chest 6 is connected with ice chest emptying LNG Liquefied natural gas heater 7 by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare 9, and 7 outlets of ice chest emptying LNG Liquefied natural gas heater are connected with emptying house steward 8 by carbon steel pipe line valve pipe fitting 9; Normal temperature blow-down pipe valve pipe fitting 9 is connected with emptying house steward 8, and emptying house steward 8 is connected with the inlet of water sealed tank 2, and the outlet of water sealed tank 2 is connected with emptying tube 1 by carbon steel pipe line valve pipe fitting 9; Water sealed tank 2 also is provided with carbon steel water-line valve pipe fitting 9 and carbon steel flowing line valve pipe fitting 9; Pipeline between water sealed tank 2 and the emptying tube 1 is provided with flame trap 3; Ice chest 6 is aluminium product, liquefied natural gas (LNG) tank emptying gas heater 5, ice chest emptying LNG Liquefied natural gas heater 7 are the aluminium-made air temp type vaporizer, and the material of pipeline valve pipe fitting 9, emptying house steward 8, water sealed tank 2, flame trap 3 and the emptying tube 1 in liquefied natural gas (LNG) tank emptying gas heater 5, ice chest emptying LNG Liquefied natural gas heater 7 downstreams is the normal temperature carbon steel.
Claims (3)
1, safety emptying device for liquefied natural gas factory is by emptying tube (1), water sealed tank (2), flame trap (3), liquefied natural gas (LNG) tank (4), liquefied natural gas (LNG) tank emptying gas heater (5), ice chest (6), ice chest emptying LNG Liquefied natural gas heater (7), emptying house steward (8), pipeline valve pipe fitting (9) is formed by connecting, it is characterized in that: the inlet of ice chest (6) is provided with carbon steel natural gas line valve pipe fitting (9), its outlet is connected with liquefied natural gas (LNG) tank (4) by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare (9), also is provided with refrigerant lines valve pipe fitting (9) in the ice chest (6); Liquefied natural gas (LNG) tank (4) is a double insulation structure, and its gaseous phase outlet is connected with liquefied natural gas (LNG) tank emptying gas heater (5) by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare (9); Liquefied natural gas (LNG) tank emptying gas heater (5) outlet is connected with emptying house steward (8) by carbon steel pipe line valve pipe fitting (9); The outlet of ice chest (6) is connected with ice chest emptying LNG Liquefied natural gas heater (7) by 0Cr18Ni9 low temperature stainless steel pipeline valve tube spare (9), and ice chest emptying LNG Liquefied natural gas heater (7) outlet is connected with emptying house steward (8) by carbon steel pipe line valve pipe fitting (9); Normal temperature blow-down pipe valve pipe fitting (9) is connected with emptying house steward (8), and emptying house steward (8) is connected with the inlet of water sealed tank (2), and the outlet of water sealed tank (2) is connected with emptying tube (1) by carbon steel pipe line valve pipe fitting (9); Water sealed tank (2) also is provided with carbon steel water-line valve pipe fitting (9) and carbon steel flowing line valve pipe fitting (9); Pipeline between water sealed tank (2) and the emptying tube (1) is provided with flame trap (3).
2, safety emptying device for liquefied natural gas factory according to claim 1 is characterized in that: ice chest (6) is aluminium product, and liquefied natural gas (LNG) tank emptying gas heater (5), ice chest emptying LNG Liquefied natural gas heater (7) are the aluminium-made air temp type vaporizer.
3, safety emptying device for liquefied natural gas factory according to claim 1 is characterized in that: the material of the pipeline valve pipe fitting (9) of aluminium-made air temp type downstream from vaporizer, emptying house steward (8), water sealed tank (2), flame trap (3) and emptying tube (1) is the normal temperature carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100180325A CN100507342C (en) | 2005-09-23 | 2005-09-23 | Safety emptying device for liquefied natural gas factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100180325A CN100507342C (en) | 2005-09-23 | 2005-09-23 | Safety emptying device for liquefied natural gas factory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1752508A CN1752508A (en) | 2006-03-29 |
| CN100507342C true CN100507342C (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100180325A Expired - Fee Related CN100507342C (en) | 2005-09-23 | 2005-09-23 | Safety emptying device for liquefied natural gas factory |
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| Country | Link |
|---|---|
| CN (1) | CN100507342C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851468B (en) * | 2006-03-31 | 2010-05-12 | 魏正森 | Positive pressure type sample gas on-line analysis complete discharge and safety system |
| CN107314241B (en) * | 2016-06-12 | 2019-05-07 | 中国石油化工股份有限公司 | Shale gas gas gathering station drops a hint processing method |
| CN111396746B (en) * | 2020-04-06 | 2021-05-28 | 西南石油大学 | Liquid-phase ethane pipeline valve chamber heat emptying process and device |
| CN115507298B (en) * | 2022-10-09 | 2023-06-23 | 北京中科富海低温科技有限公司 | Hydrogen discharging device and hydrogen discharging system |
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2005
- 2005-09-23 CN CNB2005100180325A patent/CN100507342C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1752508A (en) | 2006-03-29 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20160923 |
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| CF01 | Termination of patent right due to non-payment of annual fee |