CN105781787A - Recovering system for LNG fuel tail gas waste heat - Google Patents
Recovering system for LNG fuel tail gas waste heat Download PDFInfo
- Publication number
- CN105781787A CN105781787A CN201610278972.6A CN201610278972A CN105781787A CN 105781787 A CN105781787 A CN 105781787A CN 201610278972 A CN201610278972 A CN 201610278972A CN 105781787 A CN105781787 A CN 105781787A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- lng
- condenser
- regenerator
- booster pump
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention provides a recovering system for LNG fuel tail gas waste heat. The recovering system comprises an LNG gas supplying end, a low temperature pump, a condenser, an engine, an evaporator, a heat regenerator and a booster pump, wherein the condenser, the evaporator and the heat regenerator are heat exchange systems respectively formed through first pipelines and second pipelines; the LNG gas supplying end is sequentially connected with the low temperature pump, the second pipeline of the condenser, the engine and the first pipeline of the evaporator in series through a pipeline to form a gas system; and the pipeline forms a circulating system sequentially through the booster pump, the first pipeline of the heat regenerator, the second pipeline of the evaporator, an expander, the second pipeline of the heat regenerator, the first pipeline of the condenser and the booster pump. According to the recovering system provided by the invention, cooling capacity released by LNG vaporization and tail gas waste heat discharged after the engine combusts are fully utilized, so that the energy efficiency of the whole power system is improved.
Description
Technical field
The present invention relates to a kind of LNG fuel exhaust gas WHRS.
Background technology
In existing LNG fuel combustion process, often directly by exhaust emissions, but containing substantial amounts of heat in the tail gas of discharge, therefore directly heat energy is easily wasted in discharge, does not meet the demand of energy-saving and emission-reduction.
Summary of the invention
The present invention proposes a kind of LNG fuel exhaust gas WHRS, LNG cycle of engine and Organic Rankine Cycle is combined closely, and by the ingenious setting of heat-exchange system (vaporizer, condenser, regenerator), reduces system space occupancy.
The technical scheme is that and be achieved in that:
A kind of LNG fuel exhaust gas WHRS, end, cryopump, condenser, electromotor, vaporizer, regenerator and booster pump is supplied including LNG, described condenser, vaporizer, regenerator are the heat-exchange system formed by the first pipeline and the second pipeline all respectively, LNG supply end be sequentially connected in series by pipeline, the first pipeline formation gas burning system of the second pipeline of cryopump, condenser, electromotor and vaporizer；Pipeline passes sequentially through booster pump, the first pipeline of regenerator, the second pipeline of vaporizer, decompressor, the second pipeline of regenerator, the first pipeline of condenser and booster pump and forms blood circulation.
Preferably, the second pipeline of described condenser, pipeline between electromotor are provided with the gas collecting apparatus ensureing gas temperature and the stability of flow entering electromotor.
The present invention produce have the beneficial effect that the present invention make full use of LNG vaporization release cold and engine combustion after discharge tail gas waste heat, improve the energy efficiency of whole dynamical system.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of LNG fuel exhaust gas WHRS as shown in Figure 1, end 1, cryopump 2, condenser 3, electromotor 4, vaporizer 5, regenerator 6 and booster pump 7 is supplied including LNG, described condenser 3, vaporizer 5, regenerator 6 are the heat-exchange system formed by the first pipeline and the second pipeline all respectively, LNG supply end 1 be sequentially connected in series by pipeline, the first pipeline formation gas burning system of the second pipeline of cryopump 2, condenser 3, electromotor 4 and vaporizer 5；Pipeline passes sequentially through booster pump 7, the first pipeline of regenerator 6, the second pipeline of vaporizer 5, decompressor 8, the second pipeline of regenerator 6, the first pipeline of condenser 3 and booster pump 7 and forms blood circulation.
In LNG circulates, LNG enters before engine combustion, it is desirable to have gas collecting apparatus ensures stablizing of temperature and flow, and the state parameter of LNG blood circulation is affected limited by gas collecting apparatus, therefore omits at this.In circulation of tail gas after being combusted, the flow of tail gas is the flow of LNG and the corresponding air mass flow sum needed of burning.First tail gas can provide power through turbine for supercharging air, and the vaporizer being then Rankine cycle system then through vaporizer provides heat.Through overexpansion and heat release, the energy of tail gas can be reclaimed as far as possible.The reason simultaneously adopting air cooling and LNG cooling is because, and in system, the cold of LNG is insufficient for the demand of the organic rankine cycle system of design.
In organic Rankine bottoming cycle, refrigeration working medium becomes subcooled liquid through booster pump 7 supercharging from liquid saturation point, and then heating up again through the waste gas heat exchange backflowed in working medium and vaporizer 5 in regenerator 6 becomes gas or supercritical material.After decompressor 8 blood pressure lowering, refrigeration working medium becomes gas, then through regenerator 6 with forward working medium heat exchange, with LNG heat exchange and after air cooler, be condensed into liquid through condenser 3, refrigeration working medium becomes original state, and so far blood circulation terminates.In LNG vaporization and tail gas waste heat recovery section, first LNG supplies to drive through cryopump 2 end 1 from LNG and flows out, then condensed device 3 inputs electromotor as fuel after being vaporizated into gas, and the vehicle exhaust after burning, after turbine output, enters air after evaporator 5 is lowered the temperature further.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (2)
1. a LNG fuel exhaust gas WHRS, it is characterized in that, end, cryopump, condenser, electromotor, vaporizer, regenerator and booster pump is supplied including LNG, described condenser, vaporizer, regenerator are the heat-exchange system formed by the first pipeline and the second pipeline all respectively, LNG supply end be sequentially connected in series by pipeline, the first pipeline formation gas burning system of the second pipeline of cryopump, condenser, electromotor and vaporizer；Pipeline passes sequentially through booster pump, the first pipeline of regenerator, the second pipeline of vaporizer, decompressor, the second pipeline of regenerator, the first pipeline of condenser and booster pump and forms blood circulation.
2. a kind of LNG fuel exhaust gas WHRS as claimed in claim 1, it is characterised in that the pipeline between the second pipeline of described condenser, electromotor is provided with the gas collecting apparatus ensureing gas temperature and the stability of flow entering electromotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278972.6A CN105781787A (en) | 2016-04-28 | 2016-04-28 | Recovering system for LNG fuel tail gas waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278972.6A CN105781787A (en) | 2016-04-28 | 2016-04-28 | Recovering system for LNG fuel tail gas waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105781787A true CN105781787A (en) | 2016-07-20 |
Family
ID=56400143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610278972.6A Pending CN105781787A (en) | 2016-04-28 | 2016-04-28 | Recovering system for LNG fuel tail gas waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105781787A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045539A (en) * | 2017-12-01 | 2018-05-18 | 中国船舶重工集团公司第七〇九研究所 | A kind of draining system and ship steam/water circulating dynamical system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016857A (en) * | 2007-02-12 | 2007-08-15 | 西安交通大学 | Liquefied natural gas double-driving automobile circulatory system based on opening Rankine cycle |
| CN102996194A (en) * | 2012-12-06 | 2013-03-27 | 西安交通大学 | Comprehensive energy recycling system based on liquefied natural gas automobile |
| CN103016084A (en) * | 2013-01-04 | 2013-04-03 | 成都昊特新能源技术有限公司 | LNG (Liquefied Natural Gas) cold energy double-turbine power generation system |
| CN205859598U (en) * | 2016-04-28 | 2017-01-04 | 中国船舶重工集团公司第七一九研究所 | A kind of LNG fuel exhaust gas WHRS |
-
2016
- 2016-04-28 CN CN201610278972.6A patent/CN105781787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016857A (en) * | 2007-02-12 | 2007-08-15 | 西安交通大学 | Liquefied natural gas double-driving automobile circulatory system based on opening Rankine cycle |
| CN102996194A (en) * | 2012-12-06 | 2013-03-27 | 西安交通大学 | Comprehensive energy recycling system based on liquefied natural gas automobile |
| CN103016084A (en) * | 2013-01-04 | 2013-04-03 | 成都昊特新能源技术有限公司 | LNG (Liquefied Natural Gas) cold energy double-turbine power generation system |
| CN205859598U (en) * | 2016-04-28 | 2017-01-04 | 中国船舶重工集团公司第七一九研究所 | A kind of LNG fuel exhaust gas WHRS |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045539A (en) * | 2017-12-01 | 2018-05-18 | 中国船舶重工集团公司第七〇九研究所 | A kind of draining system and ship steam/water circulating dynamical system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
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| RJ01 | Rejection of invention patent application after publication |