CN104406052A - LG (Liquefied Gas) gasification system and method - Google Patents
LG (Liquefied Gas) gasification system and method Download PDFInfo
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- CN104406052A CN104406052A CN201410592030.6A CN201410592030A CN104406052A CN 104406052 A CN104406052 A CN 104406052A CN 201410592030 A CN201410592030 A CN 201410592030A CN 104406052 A CN104406052 A CN 104406052A
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- gasification
- transferring medium
- heat transferring
- aerification
- heat exchange
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Abstract
The invention relates to an LG (Liquefied Gas) gasification system which is mounted on an LG pipeline which is used for conveying LG. The system comprises a gasification component, a heat exchanger, a circulating pump, an expansion water cabinet and a gasifying heat exchange medium pipeline, wherein the gasification component is used for heating and gasifying the LG, the heat exchanger is used for introducing a heating heat exchange medium which undergoes heat exchange with a gasifying heat exchange medium, the circulating pump is used for supplying power to the gasifying heat exchange medium, and the expansion water cabinet is used for buffering impact, which is formed by the expansion and contraction of the gasifying heat exchange medium in closed circulation; the gasification component, the expansion water cabinet, the circulating pump and the heat exchanger are sequentially connected together by the gasifying heat exchange medium pipeline, so as to form the closed circulation of the gasifying heat exchange medium; the circulating pump drives the gasifying heat exchange medium to continuously undergo closed circulation, the temperature of the gasifying heat exchange medium rises after the gasifying heat exchange medium undergoes heat exchange with the heating heat exchange medium in the heat exchanger, then, the LG is heated in the gasification component and is gasified into gas, and the impact which is formed by the expansion and contraction of the gasifying heat exchange medium in the closed circulation is buffered in the expansion water cabinet. According to the system, the stability of the temperature of the gas is improved, and the risk of leakage is reduced, so that the system is suitable for gasifying the LG on a steamship.
Description
Technical field
The present invention relates to the gasification of liquid, more particularly, relate to one and liquid gas (liquefied gas, LG) is gasified effectively as the system and method for gas, belong to heat power engineering field.
Background technique
Rock gas is the gaseous mixture based on hydrocarbon, and its Main Ingredients and Appearance is methane, and having colorless and odorless, the characteristic such as nontoxic, corrosion-free, is a kind of compressible inflammable gas.Application ultra-low temperature cold freeze techniques makes rock gas become liquid state (volume-diminished about 600 times), then ultralow temperature cold insulation groove tank is adopted to preserve, it is a kind of mode realizing rock gas long distance transportation, this mode has the advantage that storage volume is little, transfer efficiency is high and safe and reliable, can solve conveying and the supply problem of natural air-air source well.
Along with the development of international trade and Shipping, the pollution of toxic emission to earth environment taking Conventional petroleum products as the boat diesel engine of fuel is more and more serious, International Maritime Organization IMO have passed " world prevents boats and ships from causing pollution of atmosphere pact " for this reason, further increases emission request when running ship at sea.Rock gas is a kind of clean energy resource fuel, and its advantage is without the need to or only need increases aftertreatment converter simply just can reach Tier III emission request easily, and thus increasing boats and ships adopt rock gas as power fuel at present.But due to nonuniformity and the various political war factor of our times resource distribution, the supply of rock gas is also unstable, thus market is proposed dual-fuel diesel engine, the feature of such diesel engine is, both Conventional petroleum products can have been used as fuel, also rock gas can be used as fuel, and can under bavin oil and gas two kinds of mode of operations flexible conversion, therefore, use the mode of duel fuel engine and double fuel collocation to provide power for boats and ships, become the emphasis of countries in the world production development.
Use liquid gas (liquefied gas, abbreviation LG) as fuel, need it to be gasificated as combustible gaseous state from liquid state when storing, this gasification generally adopts mode of heating.The working load of duel fuel engine is from 0 to 100%, the LNG Liquefied natural gas needed is also corresponding rises to 100% from 0%, the excursion of transition period LNG Liquefied natural gas flow can be very large, if directly use thermal source and LG to carry out heat exchange in aerification parts, LG can be caused significantly to change and thermal source supply not in time, thus cannot by LG heating reach the temperature required requirement of dual-fuel diesel engine.In addition, LNG Liquefied natural gas is as a kind of inflammable gas, great potential safety hazard will be caused once leak, and LG gasifying stage is because occur the liquid phase transformation being converted to gaseous state, change is violent, so there is larger risk of leakage, if use thermal source directly to heat LG, once leak, then the rock gas leaked is carried by thermal source most probably and propagates into non-anti-explosion area, causes great security risk.
Summary of the invention
The object of the invention is to the deficiency existed for prior art, a kind of LG gasification system is provided, for LG is gasified as gas, be convenient to control accurately the gasification temperature of the LG that flow significantly changes, to improve the stability of gas temperature, be convenient to carry out the closed monitoring of LG leak condition to gasification system and leak the collection of LG simultaneously, reduce risk of leakage, improve Security; Present invention also offers a kind of LG gasifying method.
The present invention is achieved by the following technical solutions:
A kind of LG gasification system, is arranged on the Liquefied petroleum gas pipe for carrying LG; It is characterized in that: described gasification system comprises:
Aerification parts, are connected on described Liquefied petroleum gas pipe, pass into gasification heat transferring medium and the described LG that heats and gasify;
Heat exchanger, connects described aerification parts and is arranged on the upstream of these aerification parts, passes into heating heat transferring medium and described gasification heat transferring medium carries out heat exchange, for described aerification parts provide thermal source;
Expansion water tank, connects described aerification parts and is arranged on the downstream of these aerification parts, expands for cushioning described gasification heat transferring medium and shrinks the impact formed in closed cycle;
Recycle pump, is connected between described expansion water tank and heat exchanger, for described gasification heat transferring medium provides power;
Gasification heat transferring medium pipeline, is connected in turn described aerification parts, expansion water tank, recycle pump and heat exchanger, forms the closed cycle of described gasification heat transferring medium.
As further improvement, described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water.
As further improvement, described heating heat transferring medium is steam or hot water.
As further improvement, described steam is from the steam on steamer, and described hot water is the cooling water from steamer diesel cylinder sleeve.
As further improvement, described recycle pump is one group with two, realizes one by a function for subsequent use.
As further improvement, in described expansion water tank, carry out collection and the monitoring of leaking LG.
Another technological scheme of the present invention is:
A kind of LG gasifying method adopting above-mentioned LG gasification system to realize, it comprises: described recycle pump drives described gasification heat transferring medium along described gasification heat transferring medium pipeline at described heat exchanger, aerification parts, constantly closed cycle is carried out between expansion water tank and recycle pump, this gasification heat transferring medium carries out heat exchange with described heating heat transferring medium in described heat exchanger and temperature rises, then in described aerification parts, heat described LG and this LG gasified for gas, this gasification heat transferring medium expands and shrinks the impact formed and cushioned in described expansion water tank in closed cycle.
As further improvement, described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water.
As further improvement, described heating heat transferring medium is steam or hot water.
As further improvement, described method also comprises: in described expansion water tank, carry out collection and the monitoring of leaking LG.
Compared with prior art, invention achieves following beneficial effect:
Heat converter structure is adopted to be carried out the mode heating and gasifying heat transferring medium of heat exchange by the external heating heat transferring medium stable with heat, and heat further and gasification LG, be conducive to the gasification temperature precisely controlling the LG that flow significantly changes, thus improve gas temperature stability; In addition, gasification heat transferring medium carries out closed cycle within the closed loop, thus can collect the leakage of monitoring and LG that LG carries out leak condition in expansion water tank, decreases risk of leakage, improves Security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
It is gas that LG gasification system of the present invention and method are used for LG gasification.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention being elaborated, in the hope of being more expressly understood structure of the present invention and using process, but can not limit the scope of the invention with this.
As shown in Figure 1, described LG gasification system is arranged on the Liquefied petroleum gas pipe a for carrying LG, comprises aerification parts 3, heat exchanger 31, recycle pump 32, expansion water tank 33 and gasification heat transferring medium line b.
Described aerification parts 3 are connected on described Liquefied petroleum gas pipe a, pass into gasification heat transferring medium, and by heating LG with the heat exchange of described LG, thus described LG is aerified.Described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water, namely the percent by volume of ethylene glycol accounts for the glycol water of 40% to 60%.
Described heat exchanger 31 connects described aerification parts 3, and is arranged on the upstream of these aerification parts 3, and it is for heating described gasification heat transferring medium.Described heat exchanger 31 is connected with thermal source supply line c, and this thermal source supply line c passes into the stable external heating heat transferring medium of heat, carries out heat exchange with described gasification heat transferring medium in this heat exchanger 31, for described aerification parts 3 provide thermal source.Described heating heat transferring medium can be steam or hot water, and described steam can be from the steam on steamer, and described hot water can be the cooling water from steamer diesel cylinder sleeve.
Described expansion water tank 33 connects described aerification parts 3, and is arranged on the downstream of these aerification parts 3, and it expands for cushioning described gasification heat transferring medium and shrink the impact formed in closed cycle.Because described LG gasification system forms a loop, therefore can carry out the monitoring of LG leakage and leak the collection of LG in described expansion water tank 33.
Described recycle pump 32 is connected between described expansion water tank 33 and heat exchanger 31, and it is for providing circulation power for described gasification heat transferring medium, and the heat transferring medium circulation-supplied that will gasify is to aerification parts 3; This recycle pump 32 can be one group with two, realizes one by a, function for subsequent use.
Described aerification parts 3, expansion water tank 33, recycle pump 32 and heat exchanger 31 are connected in turn by described gasification heat transferring medium line b, form the closed cycle of described gasification heat transferring medium.
LG gasifying method of the present invention is realized by above-mentioned LG gasification system, it comprises: described recycle pump 32 drives described gasification heat transferring medium along described gasification heat transferring medium line b at described heat exchanger 31, aerification parts 32, constantly carry out closed cycle between expansion water tank 33 and recycle pump 32, described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water; This gasification heat transferring medium carries out heat exchange with described heating heat transferring medium in described heat exchanger 31 and temperature rises, and described heating heat transferring medium is steam or hot water; Then the heat transferring medium that gasifies enters described aerification parts 3, and heats described LG by heat exchange method wherein and gasify this LG for gas.Described gasification heat transferring medium expands and shrinks the impact formed and cushioned in described expansion water tank 33 in closed cycle, can also carry out collection and the monitoring of leaking LG in described expansion water tank 33.
Although describe the present invention in detail by preferred embodiment in this article; but it must be understood that; the various equivalent modifications that those skilled in the art is all to be done according to the present patent application content, change and correction; all should become the protection domain of patent of the present invention; therefore description herein and accompanying drawing should be interpreted as the purpose of description, but not limit the scope of the invention.
Claims (10)
1. a LG gasification system, is arranged on the Liquefied petroleum gas pipe for carrying LG; It is characterized in that: described gasification system comprises:
Aerification parts, are connected on described Liquefied petroleum gas pipe, pass into gasification heat transferring medium and the described LG that heats and gasify;
Heat exchanger, connects described aerification parts and is arranged on the upstream of these aerification parts, passes into heating heat transferring medium and described gasification heat transferring medium carries out heat exchange, for described aerification parts provide thermal source;
Expansion water tank, connects described aerification parts and is arranged on the downstream of these aerification parts, expands for cushioning described gasification heat transferring medium and shrinks the impact formed in closed cycle;
Recycle pump, is connected between described expansion water tank and heat exchanger, for described gasification heat transferring medium provides power;
Gasification heat transferring medium pipeline, is connected in turn described aerification parts, expansion water tank, recycle pump and heat exchanger, forms the closed cycle of described gasification heat transferring medium.
2. LG gasification system according to claim 1, is characterized in that: described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water.
3. LG gasification system according to claim 1, is characterized in that: described heating heat transferring medium is steam or hot water.
4. LG gasification system according to claim 3, is characterized in that: described steam is from the steam on steamer, and described hot water is the cooling water from steamer diesel cylinder sleeve.
5. LG gasification system according to claim 1, is characterized in that: described recycle pump is one group with two, realizes one by a function for subsequent use.
6. LG gasification system according to claim 1, is characterized in that: in described expansion water tank, carry out collection and the monitoring of leaking LG.
7. the LG gasifying method adopting LG gasification system described in claim 1 to realize, it is characterized in that: described method comprises: described recycle pump drives described gasification heat transferring medium along described gasification heat transferring medium pipeline at described heat exchanger, aerification parts, constantly closed cycle is carried out between expansion water tank and recycle pump, this gasification heat transferring medium carries out heat exchange with described heating heat transferring medium in described heat exchanger and temperature rises, then in described aerification parts, heat described LG and this LG gasified for gas, this gasification heat transferring medium expands and shrinks the impact formed and cushioned in described expansion water tank in closed cycle.
8. LG gasifying method according to claim 7, is characterized in that: described gasification heat transferring medium to be percent by volume be 40% to 60% glycol water.
9. LG gasifying method according to claim 7, is characterized in that: described heating heat transferring medium is steam or hot water.
10. LG gasifying method according to claim 7, is characterized in that: described method also comprises: in described expansion water tank, carry out collection and the monitoring of leaking LG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592030.6A CN104406052A (en) | 2014-10-29 | 2014-10-29 | LG (Liquefied Gas) gasification system and method |
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| CN201410592030.6A CN104406052A (en) | 2014-10-29 | 2014-10-29 | LG (Liquefied Gas) gasification system and method |
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| CN104406052A true CN104406052A (en) | 2015-03-11 |
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| CN201410592030.6A Pending CN104406052A (en) | 2014-10-29 | 2014-10-29 | LG (Liquefied Gas) gasification system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105202364A (en) * | 2015-08-27 | 2015-12-30 | 沪东重机有限公司 | High-stability gasification method for LG |
| CN106440501A (en) * | 2016-11-18 | 2017-02-22 | 天津城建大学 | Running method of heat pump unit of energy-self-supplied gas engine |
| CN110651151A (en) * | 2017-04-19 | 2020-01-03 | 乔治洛德方法研究和开发液化空气有限公司 | Liquefied gas supply backup system and liquefied gas backup supply method |
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| EP1990272A1 (en) * | 2007-05-08 | 2008-11-12 | Daewoo Shipbuilding & Marine Engineering Co., Ltd | Fuel gas supply system and method of an LNG carrier |
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| CN102216668A (en) * | 2008-07-15 | 2011-10-12 | 克里奥斯塔股份有限公司 | Conversion of liquefied natural gas |
| CN203162531U (en) * | 2013-01-23 | 2013-08-28 | 国鸿液化气机械工程（大连）有限公司 | High-pressure gas supply system of marine power plant |
| US20130227967A1 (en) * | 2010-11-12 | 2013-09-05 | Yusuke Yamanaka | Lng vaporization equipment |
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Patent Citations (5)
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| CN101641545A (en) * | 2007-01-30 | 2010-02-03 | 福斯特惠勒（美国）公司 | Ecological liquefied natural gas (LNG) gasifier system |
| EP1990272A1 (en) * | 2007-05-08 | 2008-11-12 | Daewoo Shipbuilding & Marine Engineering Co., Ltd | Fuel gas supply system and method of an LNG carrier |
| CN102216668A (en) * | 2008-07-15 | 2011-10-12 | 克里奥斯塔股份有限公司 | Conversion of liquefied natural gas |
| US20130227967A1 (en) * | 2010-11-12 | 2013-09-05 | Yusuke Yamanaka | Lng vaporization equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105202364A (en) * | 2015-08-27 | 2015-12-30 | 沪东重机有限公司 | High-stability gasification method for LG |
| CN106440501A (en) * | 2016-11-18 | 2017-02-22 | 天津城建大学 | Running method of heat pump unit of energy-self-supplied gas engine |
| CN106440501B (en) * | 2016-11-18 | 2018-10-23 | 天津城建大学 | A kind of energy automatically supplies gas-burning machine heat pump formula unit operation method |
| CN110651151A (en) * | 2017-04-19 | 2020-01-03 | 乔治洛德方法研究和开发液化空气有限公司 | Liquefied gas supply backup system and liquefied gas backup supply method |
| CN110651151B (en) * | 2017-04-19 | 2021-04-02 | 乔治洛德方法研究和开发液化空气有限公司 | Liquefied gas supply backup system and liquefied gas backup supply method |
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Application publication date: 20150311 |