CN103697327B - A kind of zero-emission liquid feeding system and method thereof - Google Patents
A kind of zero-emission liquid feeding system and method thereof Download PDFInfo
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- CN103697327B CN103697327B CN201310675721.8A CN201310675721A CN103697327B CN 103697327 B CN103697327 B CN 103697327B CN 201310675721 A CN201310675721 A CN 201310675721A CN 103697327 B CN103697327 B CN 103697327B
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Abstract
The invention discloses a kind of zero-emission liquid feeding system and method thereof, it comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump, liquid outlet are connected in turn, storage tank liquid outlet is connected with pump intake through the second valve, heat exchanger is connected with low-temperature receiver, liquid feeding system of the present invention can also comprise pump pond, makes pump be connected with pump pond or pump is placed in pump pond. The present invention is used for again condensation storage tank and flows into the boil-off gas in storage tank because leaking the hot boil-off gas generating and use procedure from external system, has avoided boil-off gas directly to discharge the environmental problem and the wasting of resources that cause.
Description
Technical field
The present invention relates to fluid storage and transportation art, relate in particular to a kind of zero-emission liquid feeding system and method thereof.
Background technology
In chemical industry, liquid is generally stored in large-scale storage tank. Some liquid, because boiling point is lower, easily absorb the generation of the leakage thermal conductance induced evaporation gas of storage tank. In use, because circulation needs, boil-off gas also can flow in storage tank from external system. The accumulation of boil-off gas will cause tank internal pressure to rise, to the withstand voltage formation test of storage tank. If storage tank by too high compression failure, will cause inner material to be directly discharged in environment, to environment, also cause direct economic loss simultaneously. Solve the original processing mode of boil-off gas problem for often initiatively discharge is a part of by boil-off gas at regular intervals, although this scheme has ensured the safety of storage tank, but make material in storage tank have certain loss, and the discharge of boil-off gas also pollutes the environment, and produce noise in discharge process.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of zero-emission liquid feeding system and method thereof are provided.
A kind of zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump, liquid outlet are connected in turn, and storage tank liquid outlet is connected with pump intake through the second valve, and heat exchanger is connected with low-temperature receiver.
A kind of zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve, pump pond; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump pond the first entrance, pump, liquid outlet are connected in turn, and storage tank liquid outlet is connected with pump pond the second entrance through the second valve, and heat exchanger is connected with low-temperature receiver.
A kind of zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve, pump pond; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump pond, the second valve, storage tank liquid outlet are connected in turn, and pump is placed in pump pond, and pump is connected with liquid outlet, and heat exchanger is connected with low-temperature receiver.
Described a kind of zero-emission liquid feeding system, the low-temperature receiver described in it is refrigeration plant or cold fluid.
Described a kind of zero-emission liquid feeding system, described in it, the pressure of the connector of storage tank and the second valve is greater than the pressure of pump pond and the second valve connector.
Described a kind of zero-emission liquid feeding system, described in it, the liquid level of storage tank is higher than the entrance of pump.
A kind of step of zero-emission liquid feeding method is as follows:
1) the first valve, the 3rd valve is initially closed condition, and the second valve is initially opening; Open the first valve, the gas in storage tank enters heat exchanger, after gas and low-temperature receiver heat exchange, is condensed into liquid, flows into reservoir; In reservoir, have after liquid, close the second valve, open the 3rd valve, the liquid in reservoir flows out from the 3rd valve, then is delivered to liquid outlet by pump, realizes boil-off gas liquefaction;
2) the 3rd valve is initially closed condition, and the second valve is initially opening; Liquid in storage tank flows out from the second valve, then is delivered to liquid outlet by pump.
A kind of step of zero-emission liquid feeding method is as follows:
1) the first valve, the 3rd valve is initially closed condition, and the second valve is initially opening; Open the first valve, the gas in storage tank enters heat exchanger, after gas and low-temperature receiver heat exchange, is condensed into liquid, flows into reservoir; In reservoir, have after liquid, close the second valve, open the 3rd valve, the liquid in reservoir is through the 3rd valve inflow pump pond, then is delivered to liquid outlet by pump, realizes boil-off gas liquefaction;
2) the 3rd valve is initially closed condition, and the second valve is initially opening; Liquid in storage tank is through the second valve inflow pump pond, then is delivered to liquid outlet by pump.
The present invention is used for again condensation storage tank and flows into the boil-off gas in storage tank because leaking the hot boil-off gas generating and use procedure from external system, has avoided boil-off gas directly to discharge the environmental problem and the wasting of resources that cause.
Brief description of the drawings
Fig. 1 is zero-emission liquid feeding system schematic;
Fig. 2 is zero-emission liquid feeding system (pump pond is connected with pump) schematic diagram;
Fig. 3 is zero-emission liquid feeding system (pump is in pump pond) schematic diagram;
In figure, storage tank 1, heat exchanger 2, low-temperature receiver 3, reservoir 4, pump 5, liquid outlet 6, the first valve 7.1, the second valve 7.2, the 3rd valve 7.3, pump pond 8.
Detailed description of the invention
As shown in Figure 1, zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump, liquid outlet are connected in turn, and storage tank liquid outlet is connected with pump intake through the second valve, and heat exchanger is connected with low-temperature receiver.
As shown in Figure 2, zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve, pump pond; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump pond the first entrance, pump, liquid outlet are connected in turn, and storage tank liquid outlet is connected with pump pond the second entrance through the second valve, and heat exchanger is connected with low-temperature receiver.
As shown in Figure 3, zero-emission liquid feeding system comprises storage tank, heat exchanger, low-temperature receiver, reservoir, pump, liquid outlet, the first valve, the second valve, the 3rd valve, pump pond; Wherein storage tank gas vent, the first valve, heat exchanger, reservoir, the 3rd valve, pump pond, the second valve, storage tank liquid outlet are connected in turn, and pump is placed in pump pond, and pump is connected with liquid outlet, and heat exchanger is connected with low-temperature receiver.
Described low-temperature receiver is refrigeration plant or cold fluid. The pressure of the connector of described storage tank and the second valve is greater than the pressure of pump pond and the second valve connector. The liquid level of described storage tank is higher than the entrance of pump.
A kind of step of zero-emission liquid feeding method is as follows:
1) the first valve 7.1, the three valves 7.3 are initially closed condition, and the second valve 7.2 is initially opening; Open the first valve 7.1, the gas in storage tank 1 enters heat exchanger 2, after gas and low-temperature receiver 3 heat exchange, is condensed into liquid, flows into reservoir 4; In reservoir 4, have after liquid, close the second valve 7.2, open the 3rd valve 7.3, the liquid in reservoir 4 flows out from the 3rd valve 7.3, then is delivered to liquid outlet 6 by pump 5, realizes boil-off gas liquefaction;
2) the 3rd valve 7.3 is initially closed condition, and the second valve 7.2 is initially opening; Liquid in storage tank 1 flows out from the second valve 7.2, then is delivered to liquid outlet 6 by pump 5.
A kind of step of zero-emission liquid feeding method is as follows:
1) the first valve 7.1, the three valves 7.3 are initially closed condition, and the second valve 7.2 is initially opening; Open the first valve 7.1, the gas in storage tank 1 enters heat exchanger 2, after gas and low-temperature receiver 3 heat exchange, is condensed into liquid, flows into reservoir 4; In reservoir 4, have after liquid, close the second valve 7.2, open the 3rd valve 7.3, the liquid in reservoir 4 is through the 3rd valve 7.3 inflow pump ponds 8, then is delivered to liquid outlet 6 by pump 5, realizes boil-off gas liquefaction;
2) the 3rd valve 7.3 is initially closed condition, and the second valve 7.2 is initially opening; Liquid in storage tank 1 is through the second valve 7.2 inflow pump ponds 8, then is delivered to liquid outlet 6 by pump 5.
The course of work of the present invention is as follows:
Boil-off gas in storage tank arrives heat exchanger by the first valve, with low-temperature receiver heat exchange, is condensed into liquid after transferring heat to low-temperature receiver. Liquid flows into reservoir and stores. Reservoir reaches after the liquid level of setting, flows out, and be delivered to liquid outlet by pump from the 3rd valve. Liquid in storage tank also can and be delivered to liquid outlet by pump by the second valve. Liquid, before entering pump, can be introduced into according to actual needs pump pond and store.
The present invention is used for again condensation storage tank and flows into the boil-off gas in storage tank because leaking the hot boil-off gas generating and use procedure from external system, has avoided boil-off gas directly to discharge the environmental problem and the wasting of resources that cause.
Claims (5)
1. a zero-emission liquid feeding method, is characterized in that, its step is as follows:
1) the first valve (7.1), the 3rd valve (7.3) is initially closed condition, and the second valve (7.2) is initially opening; Open the first valve (7.1), the gas in storage tank (1) enters heat exchanger (2), after gas and low-temperature receiver (3) heat exchange, is condensed into liquid, flows into reservoir (4); Reservoir has after liquid in (4), close the second valve (7.2), open the 3rd valve (7.3), the liquid in reservoir (4) flows out from the 3rd valve (7.3), be delivered to liquid outlet (6) by pump (5) again, realize boil-off gas liquefaction;
2) the 3rd valve (7.3) is initially closed condition, and the second valve (7.2) is initially opening; Liquid in storage tank (1) flows out from the second valve (7.2), then is delivered to liquid outlet (6) by pump (5).
2. a zero-emission liquid feeding method, is characterized in that, its step is as follows:
1) the first valve (7.1), the 3rd valve (7.3) is initially closed condition, and the second valve (7.2) is initially opening; Open the first valve (7.1), the gas in storage tank (1) enters heat exchanger (2), after gas and low-temperature receiver (3) heat exchange, is condensed into liquid, flows into reservoir (4); Reservoir has after liquid in (4), close the second valve (7.2), open the 3rd valve (7.3), the liquid in reservoir (4) is through the 3rd valve (7.3) inflow pump pond (8), be delivered to liquid outlet (6) by pump (5) again, realize boil-off gas liquefaction;
2) the 3rd valve (7.3) is initially closed condition, and the second valve (7.2) is initially opening; Liquid in storage tank (1) is through the second valve (7.2) inflow pump pond (8), then is delivered to liquid outlet (6) by pump (5).
3. use a zero-emission liquid feeding system for method as claimed in claim 1, it is characterized in that comprising storage tank (1), heat exchanger (2), low-temperature receiver (3), reservoir (4), pump (5), liquid outlet (6), the first valve (7.1), the second valve (7.2), the 3rd valve (7.3); Wherein storage tank (1) gas vent, the first valve (7.1), heat exchanger (2), reservoir (4), the 3rd valve (7.3), pump (5), liquid outlet (6) are connected in turn, storage tank (1) liquid outlet is connected with pump (5) entrance through the second valve (7.2), and heat exchanger (2) is connected with low-temperature receiver (3); Described low-temperature receiver (3) is refrigeration plant or cold fluid; The pressure of the connector of described storage tank (1) and the second valve (7.2) is greater than the pressure of pump pond (8) and the second valve (7.2) connector; The liquid level of described storage tank (1) is higher than the entrance of pump (5).
4. use a zero-emission liquid feeding system for method as claimed in claim 2, it is characterized in that comprising storage tank (1), heat exchanger (2), low-temperature receiver (3), reservoir (4), pump (5), liquid outlet (6), the first valve (7.1), the second valve (7.2), the 3rd valve (7.3), pump pond (8); Wherein storage tank (1) gas vent, the first valve (7.1), heat exchanger (2), reservoir (4), the 3rd valve (7.3), pump pond (8) first entrances, pump (5), liquid outlet (6) are connected in turn, storage tank (1) liquid outlet is connected with pump pond (8) second entrances through the second valve (7.2), and heat exchanger (2) is connected with low-temperature receiver (3); Described low-temperature receiver (3) is refrigeration plant or cold fluid; The pressure of the connector of described storage tank (1) and the second valve (7.2) is greater than the pressure of pump pond (8) and the second valve (7.2) connector; The liquid level of described storage tank (1) is higher than the entrance of pump (5).
5. use a zero-emission liquid feeding system for method as claimed in claim 2, it is characterized in that comprising storage tank (1), heat exchanger (2), low-temperature receiver (3), reservoir (4), pump (5), liquid outlet (6), the first valve (7.1), the second valve (7.2), the 3rd valve (7.3), pump pond (8); Wherein storage tank (1) gas vent, the first valve (7.1), heat exchanger (2), reservoir (4), the 3rd valve (7.3), pump pond (8), the second valve (7.2), storage tank (1) liquid outlet are connected in turn, pump (5) is placed in pump pond (8), pump (5) is connected with liquid outlet (6), and heat exchanger (2) is connected with low-temperature receiver (3); Described low-temperature receiver (3) is refrigeration plant or cold fluid; The pressure of the connector of described storage tank (1) and the second valve (7.2) is greater than the pressure of pump pond (8) and the second valve (7.2) connector; The liquid level of described storage tank (1) is higher than the entrance of pump (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310675721.8A CN103697327B (en) | 2013-12-13 | 2013-12-13 | A kind of zero-emission liquid feeding system and method thereof |
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| CN201310675721.8A CN103697327B (en) | 2013-12-13 | 2013-12-13 | A kind of zero-emission liquid feeding system and method thereof |
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| CN103697327A CN103697327A (en) | 2014-04-02 |
| CN103697327B true CN103697327B (en) | 2016-05-18 |
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| CN104110574B (en) * | 2014-07-29 | 2016-08-31 | 江苏克劳特低温技术有限公司 | A kind of cryogenic gas condensate recovery system and method thereof |
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| CN101421554A (en) * | 2006-04-13 | 2009-04-29 | 氟石科技公司 | Lng vapor handling configurations and methods |
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Owner name: JIANGSU CROUT CRYOGENIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HANGZHOU KELAOTE LOW TEMPERATURE EQUIPMENT CO., LTD. Effective date: 20141211 |
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Effective date of registration: 20141211 Address after: 213022 Jiangsu city of Changzhou province Hehai West New District No. 538 state electromechanical Park Building No. 17 Applicant after: JIANGSU CRYOTE CRYOGENIC TECHNOLOGY CO., LTD. Address before: Room 161, C building, No. 525 Xixi Road, Xihu District, Zhejiang, Hangzhou 310007, China Applicant before: HANGZHOU KELAOTE LOW TEMPERATURE EQUIPMENT CO., LTD. |
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