CN103185430A - Method and system for energy matching based on liquefied natural gas - Google Patents
Method and system for energy matching based on liquefied natural gas Download PDFInfo
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- CN103185430A CN103185430A CN2011104600896A CN201110460089A CN103185430A CN 103185430 A CN103185430 A CN 103185430A CN 2011104600896 A CN2011104600896 A CN 2011104600896A CN 201110460089 A CN201110460089 A CN 201110460089A CN 103185430 A CN103185430 A CN 103185430A
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Abstract
The invention provides a system for energy matching based on liquefied natural gas, which comprises a storage tank set, a booster pump, a first compressor, a first heat exchanger and a first expander, wherein the storage tank set is used for storing liquefied natural gas; the booster pump outputs pressurized liquefied natural gas from the storage tank set; the first compressor is used for compressing air; the first heat exchanger is used for heating the liquefied natural gas outputted by the booster pump; the first expander is used for carrying out depressurization expansion gasification on the liquefied natural gas which is heated by the first heat exchanger; the first heat exchanger is provided with a first heat exchange passage and a second heat exchange passage; the first heat exchange passage allows the liquefied natural gas outputted by the booster pump to flow through; the second heat exchange passage is used for releasing heat to the liquefied natural gas in the first heat exchange passage when the compressed air outputted by the first compressor flows through the second heat exchange passage; and an energy transmission mechanism transmitting driving force to the first compressor is connected between the first compressor and the first expander; and work produced in expansion depressurization to the liquefied natural gas in the first expander serves as the driving force. The invention further provides a method for energy matching based on liquefied natural gas. The system and the method have higher energy utilization efficiency.
Description
Technical field
The present invention relates to a kind of method and system that mates based on the energy of liquefied natural gas.
Background technology
Prior art is to adopt liquefied natural gas decompression gasification, and gasifying gas directly enters conveyance conduit, arrives client.In the middle of the lower environment of temperature, also require the expenditure of energy (as a part of fuel that burns) heats gas.
Liquefied natural gas (as the LNG-liquefied natural gas) conventional process flow of standing capacity usage ratio is on the low side at present, and may need to heat energy under low temperature environment, and energy efficiency is further reduced.
The greatest problem of technical scheme is that the liquefied natural gas purposes is single at present, and in the process of decompression gasification, lot of energy (as pressure energy, cold etc.) loss is arranged.
Summary of the invention
At the problem that exists in the correlation technique, the object of the present invention is to provide a kind of method and system that mates based on the energy of liquefied natural gas, to improve efficiency of energy utilization.
For achieving the above object, the invention provides a kind of energy matching process based on liquefied natural gas, it is characterized in that, comprising: will be through the air after for the first time compression heats up, carry out the heat exchange first time with liquefied natural gas from tank battery; The step-down of will carrying out earlier through the liquefaction sky hot gas of the described heat exchange first time expanding the first time is handled, and the air with the described heat exchange first time of process carries out the heat exchange second time then; To carry out through the air of the described heat exchange second time obtaining target gas after the compression second time heats up; And will heat up the target liquefied natural gas that is complementary with the temperature and pressure that obtains with described target gas through the liquefied natural gas of the described heat exchange second time.
Preferably, the inventive method also comprises: target gas is mixed in the combustion chamber with target liquefaction is natural.
On the other hand, the present invention also provides a kind of energy matching system based on liquefied natural gas, and it comprises: in order to store the tank battery of liquefied natural gas, have gas storage entrance and gas storage outlet; First compressor to air compresses has air entry and exhaust outlet; First heat exchanger has first heat exchanger channels of the feed flow natural gas flow warp that is communicated with gas storage outlet, second heat exchanger channels of the voltage supply stream of compressed air warp that is communicated with exhaust outlet; To first decompressor that the liquefied natural gas after the heating of first heat exchanger carries out the puffing gasification, have expansion step-down entrance and expansion step-down outlet, expansion step-down entrance is communicated with the outlet of described second heat exchanger channels.Preferably, on the connecting pipeline between first heat exchanger channels of gas storage outlet and described first heat exchanger, also be connected with booster pump.
Preferably, between first compressor and first decompressor, be connected with the merit that liquefied natural gas is produced during the expansion step-down is transferred to first compressor as driving force energy transmission mechanism in first decompressor.
Preferably, energy matching system of the present invention also comprises: to second heat exchanger from the liquefied natural gas heating of first decompressor output, have first heat exchanger channels of flowing through for the liquefied natural gas of first decompressor output, when flowing through for the compressed air of in first heat exchanger, discharging after the heat release in first heat exchanger channels second heat exchanger channels of liquefied natural gas heat release; Second compressor to the compressed air compression of exporting after through the 3rd heat exchanger of the liquefied natural gas heating of second heat exchanger heating, to heat release in second heat exchanger; Reception is from the liquefied natural gas of the heating of the 3rd heat exchanger output and the compressed-air actuated surge tank of discharging from second compressor.
Preferably, energy matching system of the present invention also comprises: the 4th heat exchanger that the liquefied natural gas air gas mixture from surge tank is heated, for the combustion chamber of being burnt therein by the mist after the heating of the 4th heat exchanger, expand second decompressor of step-down of the flue gas that mist when burning in the combustion chamber discharged, the 4th heat exchanger has first heat exchanger channels of flowing through for from the mist of surge tank, when flowing through for the flue gas of second decompressor output in first heat exchanger channels second heat exchanger channels of mist heat release, wherein, between second decompressor and second compressor, be connected with the merit that flue gas is produced during the expansion step-down is transferred to second compressor as driving force another energy transmission mechanism in second decompressor.
Preferably, energy transmission mechanism and another energy transmission mechanism are power transmission shaft.
Preferably, energy matching system of the present invention also comprises: waste heat boiler, have the first passage of flowing through for the flue gas of discharging from second heat exchanger channels of the 4th heat exchanger and from the first passage flue gas heat absorption of supplying water when flowing through second channel, wherein, exit at first passage, be connected with will be in waste heat boiler the flue gas after the heat release introduce and heat the wherein guiding pipeline of liquefied natural gas in the 3rd heat exchanger, in the exit of second channel, be connected with the hot water delivery pipe road that the water after the flue gas heat absorption in the waste heat boiler is discharged.
Preferably, energy matching system of the present invention also comprises: the 6th heat exchanger, second heat exchanger channels that has first heat exchanger channels that the flue gas of discharging behind the liquefied natural gas for heating in the 3rd heat exchanger flows through, flows through for the cold-producing medium of the heat absorption of flue gas from first heat exchanger channels; The 3rd compressor that the cold-producing medium of discharging from second heat exchanger channels of the 6th heat exchanger is compressed; The 5th heat exchanger has the 3rd heat exchanger channels that the cold-producing medium of discharging for the 3rd compressor enters, enters wherein the 4th heat exchanger channels for the water of the heat absorption of cold-producing medium from the 3rd heat exchanger channels; To the pressure regulator of lowering the temperature from the cold-producing medium throttling of the 3rd heat exchange pipeline discharge, its arrival end is communicated with the outlet of the 3rd heat exchanger channels, its port of export is communicated with the entrance of second heat exchanger channels of the 6th heat exchanger, and the water that enters the water in the 3rd heat exchanger channels of the 5th heat exchanger and enter waste heat boiler is from same pipeline.
Preferably, replace aforesaid the 3rd compressor and pressure regulator with refrigerant line.
Preferably, energy matching system of the present invention also comprises: receive the hot water of discharging from the hot water delivery pipe road and the hot water client of the hot water of discharging from the 3rd heat exchanger channels of the 5th heat exchanger.
Preferably, energy matching system of the present invention also comprises: reclaim first cold energy reclamation device of cold from the expansion decompression liquefied natural gas of first decompressor output, have the cold recovery end that is communicated with the expansion step-down outlet of first decompressor.
Preferably, energy matching system of the present invention also comprises: reclaim second cold energy reclamation device of cold from the expansion decompression flue gas of second decompressor output, have the cold recovery end that is communicated with the expansion step-down outlet of second decompressor.
Compared with prior art, beneficial effect of the present invention is: the present invention utilizes the turbine expansion system, realizes adiabatic constant entropy expansion, and the energy (as the pressure merit) of decompression process is recycled.The energy that utilizes liquid pressurization, gas to produce in processes such as compression, expansion, burning simultaneously carries out the heat exchange circulation in internal system, especially the cold that produces in the gas expansion process is recycled, thereby reached the purpose that improves system capacity efficient.
Description of drawings
Fig. 1 is the schematic diagram that the present invention is based on the energy matching system of liquefied natural gas.
Among the figure:
1 liquefied natural gas (LNG) tank battery
2 booster pumps
3 first heat exchangers
4 second compressors
5 second heat exchangers
6 the 3rd heat exchangers
7 surge tanks
8 the 4th heat exchangers
9 combustion chambers
10 second decompressors
11 the 5th heat exchangers
12 the 3rd compressors
13 pressure regulators
14 the 6th heat exchangers
15 waste heat boilers (or refrigeration machine)
16 first compressors
17 first decompressors
18 air feed mouths
19 water charging apertures
20 gas outlets
21 hot water outlets
22-23 energy power transmission shaft
24-25 cold recovery end (cold user side)
26 pipelines
The specific embodiment
The present invention includes following examples but be not limited to following examples.Below in conjunction with accompanying drawing technical solution of the present invention is specifically described.
On the one hand, the invention provides a kind of energy matching process based on liquefied natural gas, for ease of understanding this method, be described with reference to Fig. 1, the inventive method comprises the steps: through the air after for the first time compression heats up, carry out the heat exchange first time with liquefied natural gas from tank battery 1, in the situation shown in Fig. 1, compression for the first time heats up and can be finished by first compressor 16; The step-down of will carrying out earlier through the liquefaction sky hot gas of the described heat exchange first time expanding the first time is handled, air with the described heat exchange first time of process carries out the heat exchange second time then, in the situation shown in Fig. 1, heat exchange is for the first time carried out in first heat exchanger 3, the step-down of expanding is for the first time handled and can be finished by first decompressor 17, and heat exchange is for the second time carried out in second heat exchanger 5; To carry out through the air of the described heat exchange second time obtaining target gas after the compression second time heats up, in the situation shown in Fig. 1, compression for the second time heats up and can carry out in second compressor 4; And will heat up through the liquefied natural gas of the described heat exchange second time, the target liquefied natural gas that is complementary with the temperature and pressure that obtains with described target gas, in the situation shown in Fig. 1, heat up by the liquefied natural gas after the 6 pairs of described heat exchanges second time of the 3rd heat exchanger.Generally speaking, the present invention pressurizes to lower the temperature to compressed air and handles, liquefied natural gas is carried out the step-down hyperthermic treatment, occur the situation (being the unmatched situation of the described energy) that is not complementary with the pressure and temperature of the liquefied natural gas of avoiding to enter combustion chamber 7 and air.
Further, the inventive method also comprises: target gas is mixed in combustion chamber 7 with target liquefaction is natural, and this as can be seen from Figure 1.
On the other hand, the invention provides a kind of energy matching system based on liquefied natural gas, the energy matching system that the present invention is based on liquefied natural gas is described referring to Fig. 1, it comprises: in order to the tank battery 1 that stores liquefied natural gas, first compressor 16 that air is compressed, to first heat exchanger 3 from the liquefied natural gas heating of tank battery 1 output, liquefied natural gas after 3 heating of first heat exchanger is carried out first decompressor 17 that puffing gasifies, first compressor has air entry and exhaust outlet (following other compressors and first compressor are similar), first decompressor 17 has expansion step-down entrance and expansion step-down outlet (following other decompressors and first decompressor are similar), and expansion step-down entrance is communicated with the outlet of described second heat exchanger channels.First heat exchanger 3 has first heat exchanger channels of the feed flow natural gas flow warp that is communicated with the gas storage of air accumulator 1 outlet, second heat exchanger channels of the voltage supply stream of compressed air warp that is communicated with the exhaust outlet of first compressor 16, wherein liquefied natural gas heat release in first heat exchanger channels during compressed air in second heat exchanger channels.Further, as seen from Figure 1, the gas storage of air accumulator 1 outlet and on the connecting pipeline between first heat exchanger channels of first heat exchanger 3, can also be connected with booster pump 2.Booster pump 2 has pump intake and pump discharge, and wherein the pump intake of booster pump 2 is communicated with first heat exchanger channels of pump discharge and first heat exchanger 3 with the liquefied natural gas outlet of tank battery 1.Between first compressor 16 and first decompressor 17, be connected with energy transmission mechanism (being power transmission shaft 22 in the present embodiment), this energy transmission mechanism is transferred to first compressor 16 with the merit that liquefied natural gas produces during the expansion step-down as driving force in first decompressor 17, the merit of Chan Shenging can this first compressor 16 of all or part of transmission herein.
Continuation is referring to Fig. 1, energy matching system of the present invention also comprises: to second heat exchanger 5 from the liquefied natural gas heating of first decompressor 17 output, wherein, second heat exchanger channels that second heat exchanger 5 has first heat exchanger channels of flowing through for the liquefied natural gas of first decompressor 17 output, flows through for the compressed air of discharging after the heat release in first heat exchanger 3, compressed air liquefied natural gas heat release in first heat exchanger channels in second heat exchanger channels; Second compressor 4 to the compressed air compression of exporting after through the 3rd heat exchanger 6 of the liquefied natural gas heating of second heat exchanger 5 heating, to heat release in second heat exchanger 5; Reception is from the liquefied natural gas of the heating of the 3rd heat exchanger 6 outputs and the compressed-air actuated surge tank 7 of discharging from second compressor 4.
Continuation is referring to Fig. 1, and energy matching system of the present invention also comprises: the 4th heat exchanger 8 that the liquefied natural gas air gas mixture from surge tank 7 is heated, for the combustion chamber 9 of being burnt therein by the mist after 8 heating of the 4th heat exchanger, to expand second decompressor 10 of step-down of the flue gas of discharging during the mist burning in the combustion chamber 9.The 4th heat exchanger 8 has second heat exchanger channels of flowing through for first heat exchanger channels of flowing through from the mist of surge tank 7, for the flue gas of second decompressor, 10 outputs, flue gas mist heat release in first heat exchanger channels in second heat exchanger channels.Also illustrate among Fig. 1, between second decompressor 10 and second compressor 4, be connected with another energy transmission mechanism (in the present embodiment for power transmission shaft 23), be transferred to second compressor 4 with the merit that flue gas is produced during the expansion step-down as driving force in second decompressor 10.The merit of Chan Shenging can this second compressor 4 of all or part of transmission herein.
Continuation is referring to Fig. 1, energy matching system of the present invention also comprises: waste heat boiler 15 has the first passage of flowing through for the flue gas of discharging from second heat exchanger channels of the 4th heat exchanger 8 and (from the water charging aperture 19) second channel that flue gas absorbs heat from first passage when flowing through that supplies water.In the exit of first passage, be connected with the flue gas after the heat release in waste heat boiler 15 introduced and heat the wherein guiding pipeline of liquefied natural gas in the 3rd heat exchanger 6.In the exit of second channel, be connected with the hot water delivery pipe road that the water after the flue gas heat absorption in the waste heat boiler 15 is discharged.
Continuation is referring to Fig. 1, energy matching system of the present invention also comprises: the 6th heat exchanger 14, second heat exchanger channels that has first heat exchanger channels that the flue gas of discharging behind the liquefied natural gas for heating in the 3rd heat exchanger 6 flows through, flows through for the cold-producing medium of the heat absorption of flue gas from first heat exchanger channels; The 3rd compressor 12 that the cold-producing medium of discharging from second heat exchanger channels of the 6th heat exchanger 14 is compressed; The 5th heat exchanger 11 has the 3rd heat exchanger channels that the cold-producing medium of discharging for the 3rd compressor 12 enters, enters wherein the 4th heat exchanger channels for the water (from water charging aperture 19) of the heat absorption of cold-producing medium from the 3rd heat exchanger channels; To the pressure regulator 13 that the cold-producing medium throttling of discharging from the 3rd heat exchange pipeline is lowered the temperature, pressure regulator 13 arrival ends are communicated with the outlet of the 3rd heat exchanger channels, and pressure regulator 13 ports of export are communicated with the entrance of second heat exchanger channels of the 6th heat exchanger 14.Preferably, the water that enters the water in the 3rd heat exchanger channels of the 5th heat exchanger 11 and enter waste heat boiler 15 is from same pipeline.Further, Fig. 1 also illustrates system of the present invention and comprises the hot water client, is connected hot water outlet 21 places, to receive the hot water of discharging from aforesaid hot water delivery pipe road and the hot water of discharging from the 3rd heat exchanger channels of the 5th heat exchanger 11.In addition, account in economy under the situation of permission, can use cold-producing medium or other low-temperature receivers to replace the 3rd compressor 12 and pressure regulator 13, namely replace the 3rd compressor 12 and pressure regulator 13 with refrigerant line.
Further, system of the present invention also can comprise: reclaim first cold energy reclamation device of cold (surplus cold) from the expansion decompression liquefied natural gas of first decompressor, 17 outputs, this first cold energy reclamation device has the cold recovery end 24 that is communicated with the expansion step-down outlet of first decompressor 17; Reclaim second cold energy reclamation device of cold from the expansion decompression flue gas of second decompressor, 10 outputs, this second cold energy reclamation device has the cold recovery end 25 that is communicated with the expansion step-down outlet of second decompressor 10.
According to above description, energy matching system of the present invention can realize that (can realize twice pressurization in the situation of Fig. 1) handled in the cooling of pressurizeing to compressed air, liquefied natural gas is carried out the step-down hyperthermic treatment, so that the pressure and temperature of liquefied natural gas and air just enters combustion chamber 7 after mating mutually.
The present invention utilize the turbine expansion technology to system internal pressure merit loss reclaim, utilize self-loopa heat transfer system system in to increase utilization rate to system thermal, the surplus cold that can produce in any expansion process directly reclaims output simultaneously.
Below referring to Fig. 1, to describe workflow of the present invention:
To booster pump 2 pressurizations, enter first heat exchanger 3 by liquefied natural gas such as LNG tank battery output liquefied natural gas such as LNG, enter the gasification of first decompressor, 17 puffings after being heated up, after entering 5 intensifications of second heat exchanger, after entering the 3rd heat exchanger 6 further intensifications, enter gas outlet 20 respectively and arrive user sides; Enter surge tank 7.
After air enters first compressor 16 by air feed mouth 18, enter after the pressurization and enter second heat exchanger 5 after the cooling of first heat exchanger 3 and lowered the temperature, after 4 compressions of second compressor, enter gas buffer jar 7 then.
In surge tank 7, gas enters the 4th heat exchanger 8 after mixing, enter combustion chamber 9 after the intensification, light back gas flue gas and enter second decompressor 10, after entering the 4th heat exchanger 8 behind the puffing, enter waste heat boiler 15 or refrigeration machine after the cooling, after heat recovery, enter the 3rd heat exchanger 6, enter the 6th heat exchanger 14 after the cooling, discharge from pipeline 26 the cooling back.
Water is entered by water charging aperture 19, enters waste heat boiler or refrigeration machine 15 respectively, is transported to user side by hot water outlet 21 by reclaiming after heat heats up; After entering 11 intensifications of the 5th heat exchanger, be transported to user side by hot water outlet 21.
Cold-producing medium enters the 6th heat exchanger 14, after the intensification, enters the 3rd compressor 12, enters the 5th heat exchanger 11 after the supercharging, enters pressure regulator 13 after the cooling, enters the 6th heat exchanger 14 after the throttling cooling, beginning heat exchange circulation.
Referring to the energy matching system of the present invention shown in Fig. 1, with pressure be 1 standard atmospheric pressure, temperature for-162 ℃, the LNG of 1000kg/h be example, the cold energy of the pressure energy of this system recoveries 70KW, recovery 100kw, when adopting the generator utilization to expand the acting generating, the pressure of the 70kw that reclaims can be equivalent to reduce the energy consumption 70kw of compression section in the generator, thereby the cold energy of the 100kw that reclaims has been equivalent to reduce the efficient that the inlet temperature of generator has improved the engine compresses part.Combustion gas is directly by generator for electricity generation in the prior art, and the generating efficiency of prior art is 42%-43%, and the present invention can bring up to 49.2% with generating efficiency.
To sum up, basic principle of the present invention is to use first, second law of heating power, utilizes the turbine expansion system, realizes adiabatic constant entropy expansion, and the energy (as the pressure merit) of decompression process is recycled.The energy that utilizes liquid pressurization, gas to produce in processes such as compression, expansion, burning simultaneously carries out the heat exchange circulation in internal system, especially the cold that produces in the gas expansion process is recycled, thereby reached the purpose that improves system capacity efficient.
The present invention increases its useful work efficient to the liquid supercharging of liquefied natural gas.The energy (as the pressure energy) that loses in the general transmission course of liquefied natural gas is reclaimed, and convert to other form energies (as) be used.Liquefied natural gas because the variations in temperature that the compression in the transmission course or expansion bring is used, is increased the system capacity utilization.Can realize directly reclaiming externally supply to the excessive cold that produces in any link of technical process.To being realized that by liquefied natural gas the various ways function provides total solution.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the energy matching process based on liquefied natural gas is characterized in that, comprising:
Will be through the air after for the first time compression heats up, carry out the heat exchange first time with liquefied natural gas from tank battery;
The step-down of will carrying out earlier through the liquefaction sky hot gas of the described heat exchange first time expanding the first time is handled, and the air with the described heat exchange first time of process carries out the heat exchange second time then;
To carry out through the air of the described heat exchange second time obtaining target gas after the compression second time heats up; And
To heat up the target liquefied natural gas that is complementary with the temperature and pressure that obtains with described target gas through the liquefied natural gas of the described heat exchange second time.
2. energy matching process according to claim 1 is characterized in that, also comprises: described target gas is mixed in the combustion chamber with described target liquefaction is natural.
3. the energy matching system based on liquefied natural gas is characterized in that, comprising:
In order to the tank battery (1) that stores liquefied natural gas, has gas storage entrance and gas storage outlet;
First compressor (16) to air compresses has air entry and exhaust outlet;
First heat exchanger (3) has first heat exchanger channels of the feed flow natural gas flow warp that is communicated with described gas storage outlet, second heat exchanger channels of the voltage supply stream of compressed air warp that is communicated with described exhaust outlet;
First decompressor (17) to the liquefied natural gas after described first heat exchanger heating carries out the puffing gasification has expansion step-down entrance and expansion step-down outlet, and described expansion step-down entrance is communicated with the outlet of described second heat exchanger channels.
4. energy matching system according to claim 3 is characterized in that, on the connecting pipeline between first heat exchanger channels of described gas storage outlet and described first heat exchanger (3), also is connected with booster pump (2).
5. energy matching system according to claim 4 is characterized in that,
Between described first compressor (16) and described first decompressor (17), be connected with the merit that liquefied natural gas is produced during the expansion step-down is transferred to described first compressor (16) as driving force energy transmission mechanism in described first decompressor (17).
6. energy matching system according to claim 5 is characterized in that, also comprises:
To second heat exchanger (5) from the liquefied natural gas heating of described first decompressor (17) output, have first heat exchanger channels of flowing through for the liquefied natural gas of described first decompressor (17) output, when flowing through for the compressed air of in described first heat exchanger (3), discharging after the heat release in described first heat exchanger channels second heat exchanger channels of liquefied natural gas heat release;
Second compressor (4) that the compressed air of exporting after through the 3rd heat exchanger (6) of the liquefied natural gas heating of described second heat exchanger (5) heating, to heat release in described second heat exchanger (5) is compressed;
Reception is from the liquefied natural gas of the heating of described the 3rd heat exchanger (6) output and the compressed-air actuated surge tank (7) of discharging from described second compressor (4).
7. energy matching system according to claim 6 is characterized in that, also comprises:
The 4th heat exchanger (8) that liquefied natural gas air gas mixture from described surge tank (7) is heated, for described combustion chamber (9) of being burnt therein by the mist after described the 4th heat exchanger (8) heating, to expand second decompressor (10) of step-down of the flue gas of discharging during mist burning in described combustion chamber (9)
Wherein, described the 4th heat exchanger (8) have for first heat exchanger channels of flowing through from the mist of described surge tank (7), when flowing through for the flue gas of described second decompressor (10) output in described first heat exchanger channels second heat exchanger channels of mist heat release
Wherein, between described second decompressor (10) and described second compressor (4), be connected with the merit that flue gas is produced during the expansion step-down is transferred to described second compressor (4) as driving force another energy transmission mechanism in described second decompressor (17).
8. energy matching system according to claim 7 is characterized in that, described energy transmission mechanism and described another energy transmission mechanism are power transmission shaft (22,23).
9. according to claim 7 or 8 described energy matching systems, it is characterized in that, also comprise:
Waste heat boiler (15) has the first passage of flowing through for the flue gas of discharging from second heat exchanger channels of described the 4th heat exchanger (8) and the second channel that flue gas absorbs heat from described first passage when flowing through that supplies water,
Wherein, exit at described first passage, be connected with will be in described waste heat boiler (10) flue gas after the heat release introduce and heat the wherein guiding pipeline of liquefied natural gas in described the 3rd heat exchanger (6), in the exit of described second channel, be connected with the hot water delivery pipe road that the water after the flue gas heat absorption in the described waste heat boiler (10) is discharged.
10. energy matching system according to claim 9 is characterized in that, also comprises:
The 6th heat exchanger (14), second heat exchanger channels that has first heat exchanger channels that the flue gas of discharging behind the liquefied natural gas for heating in described the 3rd heat exchanger (6) flows through, flows through for the cold-producing medium of the heat absorption of flue gas from described first heat exchanger channels;
The 3rd compressor (12) that the cold-producing medium of discharging from second heat exchanger channels of described the 6th heat exchanger (14) is compressed;
The 5th heat exchanger (11) has the 3rd heat exchanger channels that the cold-producing medium of discharging for described the 3rd compressor (12) enters, enters wherein the 4th heat exchanger channels for the water of the heat absorption of cold-producing medium from described the 3rd heat exchanger channels;
To the pressure regulator (13) that the cold-producing medium throttling of discharging from described the 3rd heat exchange pipeline is lowered the temperature, its arrival end is communicated with the outlet of described the 3rd heat exchanger channels, and its port of export is communicated with the entrance of second heat exchanger channels of described the 6th heat exchanger (14),
Wherein, the water that enters the water in the 3rd heat exchanger channels of described the 5th heat exchanger (11) and enter described waste heat boiler (15) is from same pipeline.
11. energy matching system according to claim 10 is characterized in that, replaces the 3rd compressor (12) and the pressure regulator (13) described in the claim 10 with refrigerant line.
12. according to claim 10 or 11 described energy matching systems, it is characterized in that, also comprise:
The hot water client of the hot water that reception is discharged from described hot water delivery pipe road and the hot water of discharging from the 3rd heat exchanger channels of described the 5th heat exchanger (11).
13. energy matching system according to claim 3 is characterized in that, also comprises:
From the expansion decompression liquefied natural gas of described first decompressor (17) output, reclaim first cold energy reclamation device of cold, have the cold recovery end (24) that is communicated with the expansion step-down outlet of described first decompressor (17).
14. energy matching system according to claim 7 is characterized in that, also comprises:
From the expansion decompression flue gas of described second decompressor (10) output, reclaim second cold energy reclamation device of cold, have the cold recovery end (25) that is communicated with the expansion step-down outlet of described second decompressor (10).
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| CN201110460089.6A CN103185430B (en) | 2011-12-31 | The method and system of the energy based on liquefied natural gas coupling |
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| CN201110460089.6A CN103185430B (en) | 2011-12-31 | The method and system of the energy based on liquefied natural gas coupling |
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| CN103185430B CN103185430B (en) | 2016-12-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104832780A (en) * | 2015-05-21 | 2015-08-12 | 新奥气化采煤有限公司 | Compressed methane gas recovery system and method |
| CN112127961A (en) * | 2013-07-19 | 2020-12-25 | Itm动力（研究）有限公司 | Pressure reducing system |
| CN114526135A (en) * | 2022-02-23 | 2022-05-24 | 中国科学院工程热物理研究所 | Pressure and flow regulating mechanism, compressed gas energy storage system and regulating method |
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| JPS57122107A (en) * | 1981-01-21 | 1982-07-29 | Toshiba Corp | Combined cycle generator |
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| WO2008136122A1 (en) * | 2007-04-26 | 2008-11-13 | Hitachi, Ltd. | Gas turbine equipment and method of altering the same |
| CN202420073U (en) * | 2011-12-31 | 2012-09-05 | 新奥科技发展有限公司 | Energy matching system based on liquefied natural gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112127961A (en) * | 2013-07-19 | 2020-12-25 | Itm动力（研究）有限公司 | Pressure reducing system |
| CN104832780A (en) * | 2015-05-21 | 2015-08-12 | 新奥气化采煤有限公司 | Compressed methane gas recovery system and method |
| CN114526135A (en) * | 2022-02-23 | 2022-05-24 | 中国科学院工程热物理研究所 | Pressure and flow regulating mechanism, compressed gas energy storage system and regulating method |
| CN114526135B (en) * | 2022-02-23 | 2023-06-27 | 中国科学院工程热物理研究所 | Pressure and flow regulating mechanism, compressed gas energy storage system and regulating method |
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