CN105333693A - Efficient and energy-saving BOG (boil-off gas) recycling device - Google Patents
Efficient and energy-saving BOG (boil-off gas) recycling device Download PDFInfo
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Abstract
The invention relates to an efficient and energy-saving BOG (boil-off gas) recycling device which comprises a nitrogen gas storage tank, a first control valve, a nitrogen gas compressor, a nitrogen gas water cooler, a water tank, a pump, a second control valve, an expander, a third control valve, a heat exchanger I, a fourth control valve, a fifth control valve, a sixth control valve, a heat exchanger II, a seventh control valve, an eighth control valve, an LNG (liquefied natural gas) storage bottle, a weigher and a ninth control valve. According to the efficient and energy-saving BOG recycling device, a common oil-free nitrogen gas compressor and a turbo expander are adopted, low-temperature nitrogen is adopted as a heat transfer medium to exchange heat with BOG and liquefy the BOG; and dependence, on an aboard BOG compressor, of a current BOG recycling device is avoided, and therefore, the efficient and energy-saving BOG recycling device has the advantages of being safe, energy-saving, efficient and environmentally-friendly.
Description
Technical field
The present invention relates to LNG Storage, Transport technical field, be specifically related to a kind of energy-efficient BOG retracting device, for reclaiming the BOG gas produced in liquefied natural gas storage and transport process.
Background technology
Accelerate development the most effective measures that Liquefied Natural Gas Import (LNG) is current China Optimization of Energy Structure, environmental protect and raising efficiency.According to the ENERGY PLANNING of country, the ratio of the year two thousand twenty natural gas in primary energy reaches 12%, China will build about 10 LNG receiving stations in the Yangtze River Delta, Bohai Rim, Pan Pearl River Delta area, form the LNG reception facilities of year import more than 5,000 ten thousand tons scales to the year two thousand twenty.Due to LNG at ambient pressure temperature be low to moderate-162 DEG C, its special condition of storage, hourglass heat is stored just inevitable in receiving station, namely LNG can produce a large amount of boil-off gas (boil-offgas in storage, BOG), LNG low-temperature storage tank in LNG steamer, LNG tank car and receiving station, accumulator plant, peak regulation station, all also exists standard evaporation rate every day 0.05%; Produce except BOG except storage tank leaks heat simultaneously, during LNG ship unloading, also can produce a large amount of BOG.If the BOG produced can not be recycled and utilize, can only be discharged in air, cause huge waste, there is potential safety hazard, also will cause harmful effect to environment.Therefore consider that it is very necessary for how BOG being carried out disposal and utilization.
At present, engineering mainly contains two kinds of technological processes to the process of BOG, i.e. direct compression process and recondensation process.Direct compression process is that BOG gas is entered outer defeated pipe network by compressor direct weighting; Recondensation process is to BOG gas by compressor pressurizes, then with excessively cold LNG heat exchange, make BOG condensation of gas.
These two kinds of techniques are all compressed BOG by BOG compressor, although flow process is simple, power consumption is large, and has certain potential safety hazard.Meanwhile, the main dependence on import of key equipment BOG compressor, cost is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of energy-efficient BOG retracting device for above drawback, adopts common without oily nitrogen compressor and turbo-expander, take low temperature nitrogen as heat transfer medium and BOG gas converting heat and make it liquefy; The present invention has broken away from the dependence of existing BOG retracting device to external BOG compressor, has advantage that is safe, energy-conservation, efficient, environmental protection.
For solving the problems of the technologies described above, technical scheme of the present invention is:
An energy-efficient BOG retracting device, comprises nitrogen storage tank, the first by-pass valve control, nitrogen compressor, nitrogen water cooler, water tank, pump, the second by-pass valve control, decompressor, the 3rd by-pass valve control, heat exchanger, the 4th by-pass valve control, the 5th control valve family status six by-pass valve control, No. two heat exchangers, the 7th by-pass valve control, the 8th by-pass valve control, LNG storage bottle, weighing instrument, the 9th by-pass valve controls;
The outlet of described nitrogen storage tank is connected by the first pipeline with the import of nitrogen compressor, and the first pipeline is provided with the first control valve; The outlet of nitrogen compressor is connected by second pipe with the hot logistics import of nitrogen water cooler, and the cold logistics import of nitrogen water cooler is connected with pump, pump is connected with water tank, and water tank is connected with the cold stream outlet of nitrogen water cooler, forms peripheral passage; The hot stream outlet of nitrogen water cooler is connected with the pressurized end of decompressor by the 3rd pipeline, and the 3rd pipeline is provided with the second control valve; The pressurized end outlet of decompressor is connected by the 4th pipeline with an exchanger heat logistics import, and the 4th pipeline is provided with the 3rd control valve; An exchanger heat stream outlet is connected by the 5th pipeline with the expanding end import of decompressor, and the 5th pipeline is provided with the 4th control valve; The expanding end outlet of decompressor is connected by the 6th pipeline with No. two cold logistics imports of heat exchanger, and the 6th pipeline is provided with the 5th control valve; No. two cold stream outlet of heat exchanger are connected by the 7th pipeline with a cold logistics import of heat exchanger, and the 7th pipeline is provided with the 7th control valve; A cold stream outlet of heat exchanger is connected by the 8th pipeline with nitrogen storage tank import, and the 8th pipeline is provided with the 9th by-pass valve control; BOG gas introduces No. two exchanger heat logistics imports by the 9th pipeline, and the 9th pipeline is provided with the 6th by-pass valve control; No. two exchanger heat stream outlet are connected by the tenth pipeline with the import of LNG storage bottle, and the tenth pipeline is provided with the 8th by-pass valve control, and described weighing instrument is fixed on bottom LNG storage bottle.
Above-mentioned a kind of energy-efficient BOG retracting device, wherein, a described heat exchanger, No. two heat exchangers, the expanding end of decompressor, the 4th pipeline, the 5th pipeline, the 6th pipeline, all coated one layer of heat preservation floor of the 7th pipeline, described 3rd control valve, the 4th control valve, the 5th control valve, the 7th control valve all adopt low temperature major axis valve.
Above-mentioned a kind of energy-efficient BOG retracting device, wherein, described nitrogen compressor is reciprocating without oily nitrogen compressor, and decompressor is turbo-expander.
Above-mentioned a kind of energy-efficient BOG retracting device, wherein, a described heat exchanger and No. two heat exchangers are plate-fin heat exchanger or tubular heat exchanger.
Above-mentioned a kind of energy-efficient BOG retracting device, its recovery process is as follows:
(1) start shooting the precooling stage
1. the 6th by-pass valve control and the closedown of the 8th by-pass valve control is controlled, all the other by-pass valve controls are opened, 0.1Mpa in nitrogen storage tank, the nitrogen of 15-25 DEG C enter in nitrogen compressor through the first control valve and are compressed to 0.6Mpa, temperature is increased to 150-200 DEG C, then enter in nitrogen water cooler and lower the temperature, nitrogen temperature is down to 20-30 DEG C, and nitrogen water cooler plays by the ringing of pump and water tank the effect continuing to cool;
2. 0.6Mpa, the nitrogen of 20-30 DEG C enter decompressor compression end through the second by-pass valve control, be compressed to 0.7Mpa further, temperature is increased to 30-50 DEG C, then a heat exchanger is entered through the 3rd by-pass valve control, now a heat exchanger not yet has cold logistics to enter, and therefore nitrogen keeps 0.7Mpa, 30-50 DEG C temperature-resistant;
3. 0.7Mpa, the nitrogen of 30-50 DEG C enters expander end through the 4th by-pass valve control, through expander, Pressure Drop is to 0.03Mpa, temperature is down to-20 DEG C and is entered the second heat exchanger through the 5th by-pass valve control, BOG gas is not yet introduced in now the second exchanger heat logistics import, therefore 0.03Mpa, the nitrogen of-20 DEG C enters a cold logistics import of heat exchanger through the 7th by-pass valve control, 0.03Mpa, the nitrogen of-20 DEG C and 0.7Mpa, the nitrogen heat exchange of 30-50 DEG C, make 0.7Mpa, the nitrogen temperature of 30-50 DEG C is reduced to-5 DEG C, 0.03Mpa, 0.03Mpa, the nitrogen temperature of-20 DEG C is then increased to 20 DEG C and enters nitrogen storage tank, and the above-mentioned flow process that circulates,
4. repeat 1. 2. operation 3., by continuous circulation, the hot stream outlet nitrogen temperature of a heat exchanger is constantly reduced, until expander end nitrogen temperature reaches-170 DEG C--180 DEG C, pressure is 0.03Mpa;
5.-170 DEG C--180 DEG C, pressure is that the nitrogen of 0.03Mpa enters the second heat exchanger through the 5th by-pass valve control subsequently;
(2) BOG liquefaction stage
1. after expander end nitrogen temperature reaches-170 DEG C--180 DEG C, continue to open the 6th by-pass valve control and the 8th by-pass valve control, the BOG gas of-150 DEG C is passed into No. two exchanger heat logistics imports, with 0.03Mpa, the nitrogen heat exchange of-170 DEG C--180 DEG C, make BOG gas liquefaction be LNG after obtaining enough colds and flow into LNG storage bottle, nitrogen temperature is increased to-140--160 DEG C simultaneously;
2. No. two heat exchangers nitrogen of-140--160 DEG C out enters a heat exchanger, with the 0.7Mpa of the pressurized end from decompressor, the nitrogen heat exchange of 30 ~ 50 DEG C, make 0.7Mpa, the nitrogen of 30-50 DEG C is cooled to-140--150 DEG C, the nitrogen temperature of-140--160 DEG C is increased to 15-25 DEG C and enters nitrogen storage tank simultaneously, nitrogen stream repeats above-mentioned steps subsequently, continuous circulation, enough colds are provided to BOG gas, make BOG gas liquefaction be LNG and reclaim by the continuous circular flow of equipment, the continuous liquefaction finally realizing BOG is reclaimed.
Beneficial effect of the present invention is:
(1) compressor that this process unit adopts be normal reciprocating without oily nitrogen compressor, decompressor is common turbo-expander, and heat exchanger is plate-fin and tubular heat exchanger, very common on market at home, without the need to dependence on import, reduce installation cost, reduce equipment investment;
(2) low temperature nitrogen of No. two cold stream outlet of heat exchanger is introduced a cold logistics import of heat exchanger by this technique, and the nitrogen unnecessary cold being passed to an exchanger heat logistics import carries out precool heat exchanger, improves cryogenic energy utilization rate, reduces energy consumption;
(3) decompressor cooling externally acting after expanding in this technique, for better reaching energy-conservation object, utilizing decompressor compression end to be compressed to 0.7Mpa further the 0.6Mpa nitrogen after compressor compresses, reducing compressor power consumption.
(4), can batch (-type) operation, not by BOG quantum of output and the restriction of time, the impact of be not bullied source stability and downstream user demand, user's air feed and BOG reclaim and carry out simultaneously, and amount can regulate according to demand.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
A BOG retracting device energy-efficient as shown in the figure, comprises nitrogen storage tank 1, first by-pass valve control 2, nitrogen compressor 3, nitrogen water cooler 4, water tank 5, pump 6, second by-pass valve control 7, decompressor 8, the 3rd by-pass valve control 9, heat exchanger 10, the 4th by-pass valve control 11, the 5th by-pass valve control 12 the 6th by-pass valve control 13, No. two heat exchangers 14, the 7th by-pass valve control 15, the 8th by-pass valve control 16, LNG storage bottle 17, weighing instrument 18, the 9th by-pass valve control 19;
The outlet 32 of described nitrogen storage tank 1 is connected by the first pipeline 22 with the import 33 of nitrogen compressor 3, and the first pipeline 22 is provided with the first control valve 2;
The outlet 34 of nitrogen compressor 3 is connected by second pipe 23 with the hot logistics import 35 of nitrogen water cooler 4, the cold logistics import 36 of nitrogen water cooler 4 is connected with pump 6, pump 6 is connected with water tank 5, water tank 5 is connected with the cold stream outlet 37 of nitrogen water cooler 4, forms peripheral passage;
The hot stream outlet 38 of nitrogen water cooler 4 is connected with pressurized end 20 import 52 of decompressor 8 by the 3rd pipeline 24, and the 3rd pipeline 24 is provided with the second control valve 7;
The pressurized end 20 of decompressor 8 is exported 39 and is connected by the 4th pipeline 25 with a hot logistics import 40 of heat exchanger 10, and the 4th pipeline 25 is provided with the 3rd control valve 9;
A hot stream outlet 41 of heat exchanger 10 is connected by the 5th pipeline 26 with expanding end 21 import 42 of decompressor 8, and the 5th pipeline 26 is provided with the 4th control valve 11;
The expanding end 21 of decompressor 8 is exported 43 and is connected by the 6th pipeline 27 with No. two cold logistics imports 44 of heat exchanger 14, and the 6th pipeline 27 is provided with the 5th control valve 12;
No. two cold stream outlet of heat exchanger 14 45 are connected by the 7th pipeline 28 with a cold logistics import 46 of heat exchanger 10, and the 7th pipeline 28 is provided with the 7th control valve 15;
A cold stream outlet 47 of heat exchanger 10 is connected by the 8th pipeline 29 with nitrogen storage tank 1 import 48, and the 8th pipeline 29 is provided with the 9th by-pass valve control 19;
BOG gas is introduced No. two heat exchanger 14 hot logistics import the 49, nine pipelines 30 by the 9th pipeline 30 and is provided with the 6th by-pass valve control 13;
No. two hot stream outlet 50 of heat exchanger 14 are connected by the tenth pipeline 31 with LNG storage bottle 17 import 51, and the tenth pipeline 31 is provided with the 8th by-pass valve control 16, and described weighing instrument 18 is fixed on bottom LNG storage bottle 17.
The expanding end 21 of a described heat exchanger 10, No. two heat exchangers 14, decompressor 8, the 4th pipeline 25, the 5th pipeline 26, the 6th pipeline 27, all coated one layer of heat preservation floor of the 7th pipeline 28, described 3rd control valve 9, the 4th control valve 11, the 5th control valve 12, the 7th control valve 15 all adopt low temperature major axis valve.
Described nitrogen compressor is reciprocating without oily nitrogen compressor, and decompressor is turbo-expander, and a described heat exchanger and No. two heat exchangers are plate-fin heat exchanger.
An energy-efficient BOG retracting device, its recovery process is as follows:
(1) start shooting the precooling stage
1. control the 6th by-pass valve control 13 and the 8th by-pass valve control 16 are closed, all the other by-pass valve controls are opened, 0.1Mpa in nitrogen storage tank, the nitrogen of 20 DEG C enter in nitrogen compressor 3 through the first control valve 2 and are compressed to 0.6Mpa, temperature is increased to 150-200 DEG C, then enter in nitrogen water cooler 4 and lower the temperature, nitrogen temperature is down to 25 DEG C, nitrogen water cooler 4 plays by the ringing of pump and water tank the effect continuing to cool;
2. 0.6Mpa, the nitrogen of 25 DEG C enter decompressor 8 compression end through the second by-pass valve control 7, be compressed to 0.7Mpa further, temperature is increased to 45 DEG C, then a heat exchanger 10 is entered through the 3rd by-pass valve control 9, now a heat exchanger 10 not yet has cold logistics to enter, and therefore nitrogen keeps 0.7Mpa, 45 DEG C temperature-resistant;
3. 0.7Mpa, the nitrogen of 45 DEG C enters decompressor 8 expanding end through the 4th by-pass valve control 11, expand through decompressor 8, Pressure Drop is to 0.03Mpa, temperature is down to-20 DEG C and is entered the second heat exchanger 14 through the 5th by-pass valve control 12, BOG gas is not yet introduced in the now hot logistics import of the second heat exchanger 14, therefore 0.03Mpa, the nitrogen of-20 DEG C enters a cold logistics import of heat exchanger through the 7th by-pass valve control 15, 0.03Mpa, the nitrogen of-20 DEG C and 0.7Mpa, the nitrogen heat exchange of 45 DEG C, make 0.7Mpa, the nitrogen temperature of 45 DEG C is reduced to-5 DEG C, 0.03Mpa, 0.03Mpa, the nitrogen temperature of-20 DEG C is then increased to 20 DEG C and enters nitrogen storage tank 1, and the above-mentioned flow process that circulates,
4. repeat 1. 2. operation 3., by continuous circulation, the hot stream outlet nitrogen temperature of a heat exchanger 10 is constantly reduced, until decompressor 8 expanding end nitrogen temperature reaches-180 DEG C, pressure is 0.03Mpa;
5.-180 DEG C, pressure is that the nitrogen of 0.03Mpa enters the second heat exchanger through the 5th by-pass valve control 12 subsequently;
(2) BOG liquefaction stage
1. after decompressor 8 expanding end nitrogen temperature reaches-180 DEG C, continue to open the 6th by-pass valve control 13 and the 8th by-pass valve control 16, the BOG gas of-150 DEG C is passed into No. two exchanger heat logistics imports, with 0.03Mpa, the nitrogen heat exchange of-180 DEG C, make BOG gas liquefaction be LNG after obtaining enough colds and flow into LNG storage bottle 17, nitrogen temperature is increased to-140--160 DEG C simultaneously;
2. No. two heat exchangers nitrogen of-140--160 DEG C out enters a heat exchanger, with the 0.7Mpa of the pressurized end from decompressor, the nitrogen heat exchange of 45 DEG C, make 0.7Mpa, the nitrogen of 45 DEG C is cooled to-140--150 DEG C, the nitrogen temperature of-140--160 DEG C is increased to 20 DEG C and enters nitrogen storage tank simultaneously, nitrogen stream repeats above-mentioned steps subsequently, continuous circulation, enough colds are provided to BOG gas, make BOG gas liquefaction be LNG and reclaim by the continuous circular flow of equipment, the continuous liquefaction finally realizing BOG is reclaimed.
When the present invention works, cam stroke switch is followed ground connection operating axis and is rotated together, can detect separating brake and the "on" position of earthed switch, and meanwhile, VCB switch can well play a protective role.
The present invention can be used for pressing cabinet ground connection in boats and ships, and size is less, and structure is simple, is convenient to safeguard, decreases the trouble point of earthed switch, safe and reliable, has saved cost.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments, and therefore, the present invention is not by the restriction of the present embodiment, and the technical scheme that any employing equivalence replacement obtains is all in the scope of protection of the invention.
Claims (5)
1. an energy-efficient BOG retracting device, it is characterized by, comprise nitrogen storage tank, the first by-pass valve control, nitrogen compressor, nitrogen water cooler, water tank, pump, the second by-pass valve control, decompressor, the 3rd by-pass valve control, heat exchanger, the 4th by-pass valve control, the 5th control valve family status six by-pass valve control, No. two heat exchangers, the 7th by-pass valve control, the 8th by-pass valve control, LNG storage bottle, weighing instrument, the 9th by-pass valve controls;
The outlet of described nitrogen storage tank is connected by the first pipeline with the import of nitrogen compressor, and the first pipeline is provided with the first control valve; The outlet of nitrogen compressor is connected by second pipe with the hot logistics import of nitrogen water cooler, and the cold logistics import of nitrogen water cooler is connected with pump, pump is connected with water tank, and water tank is connected with the cold stream outlet of nitrogen water cooler, forms peripheral passage; The hot stream outlet of nitrogen water cooler is connected with the pressurized end of decompressor by the 3rd pipeline, and the 3rd pipeline is provided with the second control valve; The pressurized end outlet of decompressor is connected by the 4th pipeline with an exchanger heat logistics import, and the 4th pipeline is provided with the 3rd control valve; An exchanger heat stream outlet is connected by the 5th pipeline with the expanding end import of decompressor, and the 5th pipeline is provided with the 4th control valve; The expanding end outlet of decompressor is connected by the 6th pipeline with No. two cold logistics imports of heat exchanger, and the 6th pipeline is provided with the 5th control valve; No. two cold stream outlet of heat exchanger are connected by the 7th pipeline with a cold logistics import of heat exchanger, and the 7th pipeline is provided with the 7th control valve; A cold stream outlet of heat exchanger is connected by the 8th pipeline with nitrogen storage tank import, and the 8th pipeline is provided with the 9th by-pass valve control; BOG gas introduces No. two exchanger heat logistics imports by the 9th pipeline, and the 9th pipeline is provided with the 6th by-pass valve control; No. two exchanger heat stream outlet are connected by the tenth pipeline with the import of LNG storage bottle, and the tenth pipeline is provided with the 8th by-pass valve control, and described weighing instrument is fixed on bottom LNG storage bottle.
2. a kind of energy-efficient BOG retracting device as claimed in claim 1, it is characterized by, a described heat exchanger, No. two heat exchangers, the expanding end of decompressor, the 4th pipeline, the 5th pipeline, the 6th pipeline, all coated one layer of heat preservation floor of the 7th pipeline, described 3rd control valve, the 4th control valve, the 5th control valve, the 7th control valve all adopt low temperature major axis valve.
3. a kind of energy-efficient BOG retracting device as claimed in claim 1, is characterized by, and described nitrogen compressor is reciprocating without oily nitrogen compressor, and decompressor is turbo-expander.
4. a kind of energy-efficient BOG retracting device as claimed in claim 1, is characterized by, and a described heat exchanger and No. two heat exchangers are plate-fin heat exchanger or tubular heat exchanger.
5. a kind of energy-efficient BOG retracting device as claimed in claim 1, it is characterized by, its recovery process is as follows:
(1) start shooting the precooling stage
1. the 6th by-pass valve control and the closedown of the 8th by-pass valve control is controlled, all the other by-pass valve controls are opened, 0.1Mpa in nitrogen storage tank, the nitrogen of 15-25 DEG C enter in nitrogen compressor through the first control valve and are compressed to 0.6Mpa, temperature is increased to 150-200 DEG C, then enter in nitrogen water cooler and lower the temperature, nitrogen temperature is down to 20-30 DEG C, and nitrogen water cooler plays by the ringing of pump and water tank the effect continuing to cool;
2. 0.6Mpa, the nitrogen of 20-30 DEG C enter decompressor compression end through the second by-pass valve control, be compressed to 0.7Mpa further, temperature is increased to 30-50 DEG C, then a heat exchanger is entered through the 3rd by-pass valve control, now a heat exchanger not yet has cold logistics to enter, and therefore nitrogen keeps 0.7Mpa, 30-50 DEG C temperature-resistant;
3. 0.7Mpa, the nitrogen of 30-50 DEG C enters expander end through the 4th by-pass valve control, through expander, Pressure Drop is to 0.03Mpa, temperature is down to-20 DEG C and is entered the second heat exchanger through the 5th by-pass valve control, BOG gas is not yet introduced in now the second exchanger heat logistics import, therefore 0.03Mpa, the nitrogen of-20 DEG C enters a cold logistics import of heat exchanger through the 7th by-pass valve control, 0.03Mpa, the nitrogen of-20 DEG C and 0.7Mpa, the nitrogen heat exchange of 30-50 DEG C, make 0.7Mpa, the nitrogen temperature of 30-50 DEG C is reduced to-5 DEG C, 0.03Mpa, 0.03Mpa, the nitrogen temperature of-20 DEG C is then increased to 20 DEG C and enters nitrogen storage tank, and the above-mentioned flow process that circulates,
4. repeat 1. 2. operation 3., by continuous circulation, the hot stream outlet nitrogen temperature of a heat exchanger is constantly reduced, until expander end nitrogen temperature reaches-170 DEG C--180 DEG C, pressure is 0.03Mpa;
5.-170 DEG C--180 DEG C, pressure is that the nitrogen of 0.03Mpa enters the second heat exchanger through the 5th by-pass valve control subsequently;
(2) BOG liquefaction stage
1. after expander end nitrogen temperature reaches-170 DEG C--180 DEG C, continue to open the 6th by-pass valve control and the 8th by-pass valve control, the BOG gas of-150 DEG C is passed into No. two exchanger heat logistics imports, with 0.03Mpa, the nitrogen heat exchange of-170 DEG C--180 DEG C, make BOG gas liquefaction be LNG after obtaining enough colds and flow into LNG storage bottle, nitrogen temperature is increased to-140--160 DEG C simultaneously;
2. No. two heat exchangers nitrogen of-140--160 DEG C out enters a heat exchanger, with the 0.7Mpa of the pressurized end from decompressor, the nitrogen heat exchange of 30 ~ 50 DEG C, make 0.7Mpa, the nitrogen of 30-50 DEG C is cooled to-140--150 DEG C, the nitrogen temperature of-140--160 DEG C is increased to 15-25 DEG C and enters nitrogen storage tank simultaneously, nitrogen stream repeats above-mentioned steps subsequently, continuous circulation, enough colds are provided to BOG gas, make BOG gas liquefaction be LNG and reclaim by the continuous circular flow of equipment, the continuous liquefaction finally realizing BOG is reclaimed.
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| CN105627694A (en) * | 2016-03-14 | 2016-06-01 | 江苏德邦工程有限公司 | System and method for compression, liquefaction and recovery of BOG in LNG filling station |
| CN109297797A (en) * | 2017-07-24 | 2019-02-01 | 深圳国技仪器有限公司 | Automatic nitrogen condensed flue gas processor |
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| CN105627694A (en) * | 2016-03-14 | 2016-06-01 | 江苏德邦工程有限公司 | System and method for compression, liquefaction and recovery of BOG in LNG filling station |
| CN109297797A (en) * | 2017-07-24 | 2019-02-01 | 深圳国技仪器有限公司 | Automatic nitrogen condensed flue gas processor |
| CN113933081A (en) * | 2021-10-11 | 2022-01-14 | 江苏国富氢能技术装备股份有限公司 | Refrigeration expander performance testing device with zero consumption of nitrogen |
| CN113933081B (en) * | 2021-10-11 | 2023-08-11 | 江苏国富氢能技术装备股份有限公司 | Performance test device for nitrogen zero-consumption refrigeration expander |
| CN115900228A (en) * | 2023-03-02 | 2023-04-04 | 杭氧集团股份有限公司 | Device for recycling variable-low-temperature gas and using method thereof |
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Application publication date: 20160217 |