CN103335467A - LNG energy comprehensive utilization system - Google Patents
LNG energy comprehensive utilization system Download PDFInfo
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- CN103335467A CN103335467A CN2013102958580A CN201310295858A CN103335467A CN 103335467 A CN103335467 A CN 103335467A CN 2013102958580 A CN2013102958580 A CN 2013102958580A CN 201310295858 A CN201310295858 A CN 201310295858A CN 103335467 A CN103335467 A CN 103335467A
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Abstract
The invention provides an LNG energy comprehensive utilization system which comprises a cold recovery system, a distribution type energy system, an ice storage air-conditioner system, a water collector, a water segregator, and air-conditioner tail end equipment. The cold recovery system and the ice storage air-conditioner system are connected with the ice storage device through cold recovery equipment. The distribution type energy system is connected with the cold recovery system. The ice storage air-conditioner system is connected with the distribution type energy system through the water collector and the water segregator. The efficient LNG energy comprehensive utilization system is formed through the organic combination of LNG gasification equipment and the cold recovery equipment, the organic combination of natural gas generation equipment and waste heat recovery equipment, and the organic combination of the ice storage device and the air-conditioner equipment, and the gradient utilization and the comprehensive utilization of energy are realized. The LNG energy comprehensive utilization system uses LNG as a source, only emits little low-temperature smoke finally, greatly reduces carbon emission amount and heat emission amount, and greatly improves comprehensive energy utilization efficiency.
Description
Technical field
The present invention relates to cold recovery, distributed energy, ice-storage air-conditioning system, relate in particular to LNG comprehensive utilization of energy system.
Background technology
LNG is-162 ℃ cryogenic liquid mixture, and LNG per ton can produce about 230kWh cold energy when gasifying, and rationally utilizes this part cold energy can produce considerable economic.Be that the energy sets up that the distributed energy station provides generating, the application of freezing, heating is more and more with the natural gas, but because electricity needs, refrigeration demand and the asynchronism that heats demand cause the efficiency of energy utilization at distributed energy station to be restricted.In addition, conventional ice-storage air-conditioning system is to utilize the night low-price electricity to carry out ice-reserving, the power consumption when daytime, the ice-melt cooling reduced the load peak during air conditioner load peak, and the power consumption of ice-storage system does not reduce on the contrary and increases.The comprehensive utilization of energy system that does not also integrate at present cold energy recovery, distributed energy supply and ice storage air conditioner.
When the LNG cold energy is used for the air-conditioning cooling, because asynchronous on LNG gasification and air-conditioning refrigeration duty life period and the space, when utilizing LNG gasification cold energy as cold source of air conditioning, can store cold energy by the ice storage air conditioner mode, thereby improve the cold energy service efficiency.The natural gas that the LNG gasification produces can be used for distributing-supplying-energy system, satisfies user's hot and cold, electric demand, realizes energy cascade utilization.LNG cold energy and distributed energy cooling can be realized organically combining by ice storage air conditioner, realize complementing each other with standby by the group net operation of air-conditioning system.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of LNG comprehensive utilization of energy system.
The invention provides a kind of LNG comprehensive utilization of energy system, comprise cold recovery system, distributed energy resource system, ice-storage air-conditioning system, water collector, water knockout drum, air conditioner end equipment, described cold recovery system comprises LNG storage tank, LNG pump, cold reclaimer, gasifier, described LNG storage tank links to each other with described LNG pump intake end, described LNG pump discharge end is connected with described cold reclaimer arrival end, and the described cold reclaimer port of export links to each other with described gasifier arrival end; Described distributed energy resource system comprises gas turbine, lithium bromide refrigerator, described gas turbine is communicated with the described gasifier port of export, natural gas burns in described gas turbine and generates electricity, described gas turbine links to each other with described lithium bromide refrigerator, the high-temperature flue gas that described gas turbine combustion produces enters described lithium bromide refrigerator, and described lithium bromide refrigerator is reduced to described air conditioner end equipment by kind of refrigeration cycle with the air-conditioner circulating water temperature air conditioning water is provided; Described ice-storage air-conditioning system comprises ice storage unit, heat exchanger, described ice storage unit links to each other with described cold reclaimer with the 8th connecting pipe by the 7th connecting pipe, and described ice storage unit links to each other with described heat exchanger with the tenth connecting pipe by the 9th connecting pipe; Described distributed energy resource system is connected with described water collector and described water knockout drum respectively, and described ice-storage air-conditioning system is connected with described water collector and described water knockout drum respectively, and described air conditioner end equipment is connected with described water collector and described water knockout drum respectively.
As a further improvement on the present invention, described distributed energy resource system also comprises domestic hot-water's water supply line, domestic hot-water's water return pipeline, smoke discharge tube road, described lithium bromide refrigerator has heat-production functions, and described lithium bromide refrigerator is connected with described domestic hot-water's water supply line, described domestic hot-water's water return pipeline, described smoke discharge tube road respectively.
As a further improvement on the present invention, described ice storage unit comprises first Ice Storage Tank, second Ice Storage Tank, the 11 connecting pipe, the 12 connecting pipe, the 13 connecting pipe, the 14 connecting pipe, the 15 connecting pipe, the 16 connecting pipe, the 17 connecting pipe, the 18 connecting pipe, first motor-driven valve, second motor-driven valve, the 3rd motor-driven valve, the 4th motor-driven valve, the 5th motor-driven valve, the 6th motor-driven valve, the 7th motor-driven valve, the 8th motor-driven valve, described the 11 connecting pipe one end is communicated with described second Ice Storage Tank, described the 11 connecting pipe other end is communicated with described the 7th connecting pipe, and described the 3rd motor-driven valve is installed on described the 11 connecting pipe; Described the 12 connecting pipe one end is communicated with described first Ice Storage Tank, described the 12 connecting pipe other end is communicated with described the 9th connecting pipe one end, described the 9th connecting pipe other end is communicated with described heat exchanger, and described the 4th motor-driven valve is installed on described the 12 connecting pipe; Described the 13 connecting pipe one end is communicated with described the 7th connecting pipe, and described the 13 connecting pipe other end is communicated with described first Ice Storage Tank, and described first motor-driven valve is installed on described the 13 connecting pipe; Described the 14 connecting pipe one end is communicated with described the 9th connecting pipe, and described the 14 connecting pipe other end is communicated with described second Ice Storage Tank, and described second motor-driven valve is installed on described the 14 connecting pipe; Described the 15 connecting pipe one end is communicated with described second Ice Storage Tank, and described the 15 connecting pipe other end is communicated with described the 8th connecting pipe, and described the 7th motor-driven valve is installed on described the 15 connecting pipe; Described the 16 connecting pipe one end is communicated with described first Ice Storage Tank, described the 16 connecting pipe other end is communicated with described the tenth connecting pipe one end, described the tenth connecting pipe other end is communicated with described heat exchanger, and described the 8th motor-driven valve is installed on described the 16 connecting pipe; Described the 17 connecting pipe one end is communicated with described the 8th connecting pipe, and described the 17 connecting pipe other end is communicated with described first Ice Storage Tank, and described the 6th motor-driven valve is installed on described the 17 connecting pipe; Described the 18 connecting pipe one end is communicated with described the tenth connecting pipe, and described the 18 connecting pipe other end is communicated with described second Ice Storage Tank, and described the 5th motor-driven valve is installed on described the 18 connecting pipe.
As a further improvement on the present invention, described lithium bromide refrigerator is communicated with by first connecting pipe with described water collector, and described first connecting pipe is used for the air-conditioner circulating water in the described water collector is inputed to described lithium bromide refrigerator; Described lithium bromide refrigerator is for formation air conditioning water that air-conditioner circulating water is cooled, described lithium bromide refrigerator is connected by second connecting pipe with described water knockout drum, and described second connecting pipe is used for the cooled air conditioning water of described lithium bromide refrigerator is inputed to described water knockout drum.
As a further improvement on the present invention, described heat exchanger is communicated with described water knockout drum by the 5th connecting pipe, and described the 5th connecting pipe is used for the air conditioning water in the described heat exchanger is inputed to described water knockout drum; Described heat exchanger is communicated with described water collector by the 6th connecting pipe, and described the 6th connecting pipe is used for the air-conditioner circulating water in the described water collector is inputed to described heat exchanger; Ethylene glycol solution in the described heat exchanger by described the tenth connecting pipe be delivered in described first Ice Storage Tank or second Ice Storage Tank with described first Ice Storage Tank or second Ice Storage Tank in the phase change medium heat exchange, the ethylene glycol solution in described first Ice Storage Tank or second Ice Storage Tank enters by described the 9th connecting pipe again and forms circulation in the described heat exchanger.
As a further improvement on the present invention, described water knockout drum is connected by the 3rd connecting pipe with described air conditioner end equipment, described the 3rd connecting pipe is used for the air conditioning water in the water knockout drum is inputed to described air conditioner end equipment, described air conditioner end equipment is used for discharging cold makes the rising of air-condition freezing coolant-temperature gage form air-conditioner circulating water, described air conditioner end equipment is connected by the 4th connecting pipe with described water collector, and described the 4th connecting pipe is used for the air-conditioner circulating water in the described air conditioner end equipment is inputed to described water collector.
As a further improvement on the present invention, described second connecting pipe is provided with valve, and described the 3rd connecting pipe is provided with valve, and described the 5th connecting pipe is provided with valve; Described first connecting pipe is provided with valve, and described the 4th connecting pipe is provided with valve, and described the 6th connecting pipe is provided with valve.
As a further improvement on the present invention, described the 7th connecting pipe is provided with valve, and described the 8th connecting pipe is provided with valve, and described the 9th connecting pipe is provided with valve, and described the tenth connecting pipe is provided with valve.
As a further improvement on the present invention, described ice-storage air-conditioning system also comprises main frame, and described main frame two ends link to each other with described the tenth connecting pipe with described the 9th connecting pipe respectively, and described main frame is provided with valve with the pipeline that described the 9th connecting pipe is communicated with.
The invention has the beneficial effects as follows: LNG comprehensive utilization of energy of the present invention system has following advantage:
1. this LNG comprehensive utilization of energy system comprises three using energy source core: LNG gasify cold reclaimer, natural gas power and waste heat recovery apparatus, ice-reserving and air-conditioning equipment, this three using energy source cores acting in conjunction, constitute a system of LNG comprehensive utilization of energy efficiently, realized cascade utilization and the comprehensive utilization of the energy;
2. this LNG comprehensive utilization of energy system carries out cold recovery earlier when LNG gasifies, and utilizes the cold of cold recovery to carry out ice-reserving, has reduced the loss of refrigeration capacity in the LNG gasification;
3. this LNG comprehensive utilization of energy system utilizes the natural gas of LNG gasification generation to generate electricity, and reclaims the high-temperature flue gas heat that generating produces, and utilizes lithium bromide refrigerator to freeze, and for air-conditioning system provides chilled water, also can prepare domestic hot-water and heating;
4. lithium bromide refrigerator and the generator surplus cigarette of draining can also prepare the domestic hot-water by UTILIZATION OF VESIDUAL HEAT IN and carries out commercial distribution, creates economic benefit, reduces hot water user's carbon emission on a small scale;
5. the cold that ice-storage air-conditioning system stores in this LNG comprehensive utilization of energy system derives from the cold in the LNG gasification, does not have extra energy resource consumption, not discharging;
6. the energy source of this LNG comprehensive utilization of energy system and user side does not need extra mains supply in gas turbine, has increased substantially generating and power consumption efficiency;
7. this LNG comprehensive utilization of energy system has realized cold energy recycling and heat energy recycle, and primary energy (LNG) is increased substantially to the trans-utilization efficient of secondary energy sources (electric energy);
8. this LNG comprehensive utilization of energy system has taken full advantage of phase transformation potential and the heat energy of LNG, can whole electricity needs, refrigeration demand efficiently is provided and heat demand for the user, does not rely on utility network and public gas ductwork;
9. this LNG comprehensive utilization of energy system is the source with LNG, and final discharging only is a spot of low-temperature flue gas, and the carbon emission amount reduces significantly, and hot type high-volume reduces significantly, has improved comprehensive utilization of energy efficient largely.
Description of drawings
Fig. 1 is LNG comprehensive utilization of energy system principle diagram of the present invention.
Fig. 2 is LNG comprehensive utilization of energy of the present invention system one embodiment theory diagram.
The specific embodiment
As shown in Figure 1, the invention discloses a kind of LNG comprehensive utilization of energy system, comprise cold recovery system, distributed energy resource system, ice-storage air-conditioning system, water collector 201, water knockout drum 202, air conditioner end equipment 203, described cold recovery system comprises LNG storage tank 501, LNG pump 502, cold reclaimer 208, gasifier 209, described LNG storage tank 501 links to each other with described LNG pump 502 arrival ends, described LNG pump 502 ports of export are connected with described cold reclaimer 208 arrival ends, and described cold reclaimer 208 ports of export link to each other with described gasifier 209 arrival ends; Described distributed energy resource system comprises gas turbine 204, lithium bromide refrigerator 205, described gas turbine 204 is communicated with described gasifier 209 ports of export, natural gas burns in described gas turbine 204 and generates electricity, described gas turbine 204 links to each other with described lithium bromide refrigerator 205, the high-temperature flue gas that described gas turbine 204 burnings produce enters described lithium bromide refrigerator 205, and described lithium bromide refrigerator 205 is reduced to described air conditioner end equipment 203 by kind of refrigeration cycle with the air-conditioner circulating water temperature air conditioning water is provided; Described ice-storage air-conditioning system comprises ice storage unit, heat exchanger 206, described ice storage unit links to each other with described cold reclaimer 208 with the 8th connecting pipe 312 by the 7th connecting pipe 311, and described ice storage unit links to each other with described heat exchanger 206 with the tenth connecting pipe 314 by the 9th connecting pipe 313; Described distributed energy resource system is connected with described water collector 201 and described water knockout drum 202 respectively, described ice-storage air-conditioning system is connected with described water collector 201 and described water knockout drum 202 respectively, and described air conditioner end equipment is connected with described water collector 201 and described water knockout drum 202 respectively.
Described distributed energy resource system also comprises domestic hot-water's water supply line 308, domestic hot-water's water return pipeline 309, smoke discharge tube road 310, described lithium bromide refrigerator 205 has heat-production functions, and described lithium bromide refrigerator 205 is connected with described domestic hot-water's water supply line 308, described domestic hot-water's water return pipeline 309, described smoke discharge tube road 310 respectively.
Described ice storage unit comprises first Ice Storage Tank 210, second Ice Storage Tank 211, the 11 connecting pipe 315, the 12 connecting pipe 316, the 13 connecting pipe 317, the 14 connecting pipe 318, the 15 connecting pipe 319, the 16 connecting pipe 320, the 17 connecting pipe 321, the 18 connecting pipe 322, the first motor-driven valve V1, the second motor-driven valve V2, the 3rd motor-driven valve V3, the 4th motor-driven valve V4, the 5th motor-driven valve V5, the 6th motor-driven valve V6, the 7th motor-driven valve V7, the 8th motor-driven valve V8, described the 11 connecting pipe 315 1 ends are communicated with described second Ice Storage Tank 211, described the 11 connecting pipe 315 other ends are communicated with described the 7th connecting pipe 311, and described the 3rd motor-driven valve V3 is installed on described the 11 connecting pipe 315; Described the 12 connecting pipe 316 1 ends are communicated with described first Ice Storage Tank 210, described the 12 connecting pipe 316 other ends are communicated with described the 9th connecting pipe 313 1 ends, described the 9th connecting pipe 313 other ends are communicated with described heat exchanger 206, and described the 4th motor-driven valve V4 is installed on described the 12 connecting pipe 316; Described the 13 connecting pipe 317 1 ends are communicated with described the 7th connecting pipe 311, and described the 13 connecting pipe 317 other ends are communicated with described first Ice Storage Tank 210, and the described first motor-driven valve V1 is installed on described the 13 connecting pipe 317; Described the 14 connecting pipe 318 1 ends are communicated with described the 9th connecting pipe 313, and described the 14 connecting pipe 318 other ends are communicated with described second Ice Storage Tank 211, and the described second motor-driven valve V2 is installed on described the 14 connecting pipe 318; Described the 15 connecting pipe 319 1 ends are communicated with described second Ice Storage Tank 211, and described the 15 connecting pipe 319 other ends are communicated with described the 8th connecting pipe 312, and described the 7th motor-driven valve V7 is installed on described the 15 connecting pipe 319; Described the 16 connecting pipe 320 1 ends are communicated with described first Ice Storage Tank 210, described the 16 connecting pipe 320 other ends are communicated with described the tenth connecting pipe 314 1 ends, described the tenth connecting pipe 314 other ends are communicated with described heat exchanger 206, and described the 8th motor-driven valve V8 is installed on described the 16 connecting pipe 320; Described the 17 connecting pipe 321 1 ends are communicated with described the 8th connecting pipe 312, and described the 17 connecting pipe 321 other ends are communicated with described first Ice Storage Tank 210, and described the 6th motor-driven valve V6 is installed on described the 17 connecting pipe 321; Described the 18 connecting pipe 322 1 ends are communicated with described the tenth connecting pipe 314, and described the 18 connecting pipe 322 other ends are communicated with described second Ice Storage Tank 211, and described the 5th motor-driven valve V5 is installed on described the 18 connecting pipe 322.
Described lithium bromide refrigerator 205 is communicated with by first connecting pipe 301 with described water collector 201, and described first connecting pipe 301 is used for the air-conditioner circulating water in the described water collector 201 is inputed to described lithium bromide refrigerator 205; Described lithium bromide refrigerator 205 is for formation air conditioning water that air-conditioner circulating water is cooled, described lithium bromide refrigerator 205 is connected by second connecting pipe 302 with described water knockout drum 202, and described second connecting pipe 302 is used for described lithium bromide refrigerator 205 cooled air conditioning waters are inputed to described water knockout drum 202.
Described heat exchanger 206 is communicated with described water knockout drum 202 by the 5th connecting pipe 305, and described the 5th connecting pipe 305 is used for the air conditioning water in the described heat exchanger 206 is inputed to described water knockout drum 202; Described heat exchanger 206 is communicated with described water collector 201 by the 6th connecting pipe 306, and described the 6th connecting pipe 306 is used for the air-conditioner circulating water in the described water collector 201 is inputed to described heat exchanger 206; Ethylene glycol solution in the described heat exchanger 206 is delivered in described first Ice Storage Tank 210 or second Ice Storage Tank 211 and the phase change medium heat exchange in described first Ice Storage Tank 210 or second Ice Storage Tank 211 by described the tenth connecting pipe 314, and the ethylene glycol solutions in described first Ice Storage Tank 210 or second Ice Storage Tank 211 enter to form in the described heat exchanger 206 by described the 9th connecting pipe 313 again and circulate.
Described water knockout drum 202 is connected by the 3rd connecting pipe 303 with described air conditioner end equipment 203, described the 3rd connecting pipe 303 is used for the air conditioning water in the water knockout drum 202 is inputed to described air conditioner end equipment 203, described air conditioner end equipment 203 is used for discharging cold makes the rising of air-condition freezing coolant-temperature gage form air-conditioner circulating water, described air conditioner end equipment 203 is connected by the 4th connecting pipe 304 with described water collector 201, and described the 4th connecting pipe 304 is used for the air-conditioner circulating water in the described air conditioner end equipment 203 is inputed to described water collector 201.
Described second connecting pipe 302 is provided with valve, and described the 3rd connecting pipe 303 is provided with valve, and described the 5th connecting pipe 305 is provided with valve; Described first connecting pipe 301 is provided with valve, and described the 4th connecting pipe 304 is provided with valve, and described the 6th connecting pipe 306 is provided with valve.
Described the 7th connecting pipe 311 is provided with valve, and described the 8th connecting pipe 312 is provided with valve, and described the 9th connecting pipe 313 is provided with valve, and described the tenth connecting pipe 314 is provided with valve.
Described ice-storage air-conditioning system also comprises main frame 207, and described main frame 207 two ends link to each other with described the tenth connecting pipe 314 with described the 9th connecting pipe 313 respectively, and described main frame 207 is provided with valve with the pipeline that described the 9th connecting pipe 313 is communicated with.
First Ice Storage Tank, 210 ice-reservings, second Ice Storage Tank 211 are put when cold, and the first motor-driven valve V1 opens, the second motor-driven valve V2 opens, the 3rd motor-driven valve V3 closes, the 4th motor-driven valve V4 closes, the 5th motor-driven valve V5 opens, the 6th motor-driven valve V6 opens, the 7th motor-driven valve V7 closes, the 8th motor-driven valve V8 closes.
Second Ice Storage Tank, 211 ice-reservings, first Ice Storage Tank 210 are put when cold, and the first motor-driven valve V1 closes, the second motor-driven valve V2 closes, the 3rd motor-driven valve V3 opens, the 4th motor-driven valve V4 opens, the 5th motor-driven valve V5 closes, the 6th motor-driven valve V6 closes, the 7th motor-driven valve V7 opens, the 8th motor-driven valve V8 opens.
Ethylene glycol solution in the described heat exchanger 206 exports in described first Ice Storage Tank 210 or second Ice Storage Tank 211 and the phase change medium heat exchange in described first Ice Storage Tank 210 or second Ice Storage Tank 211 melts the ice, and the ethylene glycol solution that temperature reduces enters to form in the heat exchanger 206 again and circulates.
As shown in Figure 2, as one embodiment of the present of invention, this LNG comprehensive utilization of energy system also comprises natural gas line 307, and described gasifier 209 is communicated with gas distributing system by described natural gas line 307, and described gas turbine 204 is connected with described natural gas line 307.
In LNG comprehensive utilization of energy of the present invention system, must gasification before LNG acts as a fuel and uses.LNG enters cold reclaimer 208 all or part of gasifications after 502 pressurizations of LNG pump, temperature raises, enter gasifier 209 temperature and be increased to normal temperature, LNG all gasification is natural gas, be divided into two-way, one the tunnel enters the distributed energy resource system combustion power generation, and another road gas enters gas distributing system and supplies with resident or industrial gas.
Distributed energy resource system is fuel with the natural gas that the LNG gasification produces, and natural gas is combustion power generation in gas turbine 204, supplies with the user power utilization demand.The high-temperature flue gas that burning produces enters lithium bromide refrigerator 205.Lithium bromide refrigerator 205 reclaims the heat of the generating flue gases that produce, and by cold-producing medium refrigerating and air conditioning recirculated water, 12 ℃ air-conditioner circulating waters is cooled to 7 ℃ air conditioning water, supply air-conditioning system institute chilling requirement.Lithium bromide refrigerator 205 can prepare the domestic hot-water simultaneously.
The chilled water of distributed energy resource system and the chilled water of ice storage air conditioner and converge at water collector 201 and water knockout drum 202 places of air-conditioning system, Personalized air conditioning end-equipment 203 can be air conditioning terminal user cooling simultaneously.Ice-storage air-conditioning system and distributed energy resource system cooling are realized the air-conditioning system group net operation.
Ice-storage air-conditioning system reclaims the LNG cold energy by cold reclaimer 208, and is stored in first Ice Storage Tank 210 and/or second Ice Storage Tank 211.The ethylene glycol solution of ice-storage air-conditioning system and LNG heat exchange in cold reclaimer 208, ethylene glycol solution obtains cold, temperature reduces, and enters in first Ice Storage Tank 210 and/or second Ice Storage Tank 211 again, discharges cold in first Ice Storage Tank 210 and/or second Ice Storage Tank 211.Phase change medium (phase transition temperature is 0 ℃) in first Ice Storage Tank 210 and/or second Ice Storage Tank 211 undergoes phase transition, and cold is stored.
During the ice storage air conditioner cooling, 3.5 ℃ the ethylene glycol solution that first Ice Storage Tank 210 and/or second Ice Storage Tank 211 provide and air-conditioner circulating water heat exchange in heat exchanger 206 of about 12 ℃, the air-conditioner circulating water temperature is reduced to 7 ℃ by 12 ℃ after the heat exchange, enters air conditioner end equipment 203.Ethylene glycol solution in heat exchanger 206 after the heat exchange temperature be increased to 10 ℃, get back to first Ice Storage Tank 210 and/or second Ice Storage Tank 211, with the phase change medium heat exchange in first Ice Storage Tank 210 and/or second Ice Storage Tank 211, phase change medium melts gradually emits cold, the ethylene glycol solution temperature is down to 3.5 ℃, enter heat exchanger 206 again, form circulation.
Ice storage system and lithium bromide refrigerator 205 provide air conditioner refrigerating for the user simultaneously as two independent low-temperature receivers, at water knockout drum 202 and water collector 201 import and export are set respectively, mounted valve on the pipeline of turnover water collector 201 and water knockout drum 202 is controlled the running status of two cover systems respectively.Independent separately at water collector 201 and water knockout drum 202 preceding two cover systems, water collector 201 and water knockout drum 202 complement each other between system with standby to the terminal temperature difference partial common.
LNG comprehensive utilization of energy system has following advantage:
LNG comprehensive utilization of energy system by optimizing and coupling, has improved efficiency of energy utilization according to energy demand and the supply characteristic of the recovery of LNG cold energy, distributed energy, ice-storage air-conditioning system;
The natural gas that the LNG gasification produces is used for generating as the raw material of distributed energy, and the electric power that produces can provide electric power for electrically-actuated devices such as the lithium bromide refrigerator 205 in the system, main frame 207, air conditioner end equipment 203, pumps;
The domestic hot-water that distributed energy resource system produces can satisfy user domestic hot-water demand, and unnecessary part can be carried out commercial distribution, can produce economic benefit, also can reduce the high energy consumption that some little users prepare hot water, reduces discharging;
The cold that the LNG gasification produces reclaims by cold reclaimer 208, be stored in first Ice Storage Tank 210 and/or second Ice Storage Tank 211 of ice-storage air-conditioning system first Ice Storage Tank 210 and/or second Ice Storage Tank, 211 released cold quantities when cold or refrigeration duty is big in idle call.Conventional air-conditioning refrigeration, the place that also can provide cold air distribution or other to have low temperature to need can be provided the cold that first Ice Storage Tank 210 and second Ice Storage Tank 211 store;
Air conditioner load has fluctuation, the stable cold that when system moves lithium bromide refrigerator 205 is provided is as main low-temperature receiver, the part of the cold deficiency that lithium bromide refrigerator 205 provides is replenished by ice-storage air-conditioning system, can regulate because first Ice Storage Tank 210 and/or second Ice Storage Tank 211 are put the cooling rate rate, can guarantee the demand that air conditioner load changes flexibly; Under the situation that extra excess load refrigeration requirement is arranged, also can start main frame 207 cooperations, extra cold is provided.
For the large size city synthesis or the regional energy centre that contain regional area low temperature demand (as rink, freezer, pharmaceutical technology factory building etc.), can utilize lithium bromide refrigerator 205 that conventional air-conditioning is provided, provide low-temperature air conditioner to satisfy the energy resource consumption of zones of different in the regional energy centre with ice-storage air-conditioning system.
Above content be in conjunction with concrete preferred embodiment to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. LNG comprehensive utilization of energy system, it is characterized in that: comprise cold recovery system, distributed energy resource system, ice-storage air-conditioning system, water collector (201), water knockout drum (202), air conditioner end equipment (203), described cold recovery system comprises LNG storage tank (501), LNG pump (502), cold reclaimer (208), gasifier (209), described LNG storage tank (501) links to each other with described LNG pump (502) arrival end, described LNG pump (502) port of export is connected with described cold reclaimer (208) arrival end, and described cold reclaimer (208) port of export links to each other with described gasifier (209) arrival end; Described distributed energy resource system comprises gas turbine (204), lithium bromide refrigerator (205), described gas turbine (204) is communicated with described gasifier (209) port of export, natural gas burns in described gas turbine (204) and generates electricity, described gas turbine (204) links to each other with described lithium bromide refrigerator (205), the high-temperature flue gas that described gas turbine (204) burning produces enters described lithium bromide refrigerator (205), and described lithium bromide refrigerator (205) is reduced to described air conditioner end equipment (203) by kind of refrigeration cycle with the air-conditioner circulating water temperature air conditioning water is provided; Described ice-storage air-conditioning system comprises ice storage unit, heat exchanger (206), described ice storage unit links to each other with described cold reclaimer (208) with the 8th connecting pipe (312) by the 7th connecting pipe (311), and described ice storage unit links to each other with described heat exchanger (206) with the tenth connecting pipe (314) by the 9th connecting pipe (313); Described distributed energy resource system is connected with described water collector (201) and described water knockout drum (202) respectively, described ice-storage air-conditioning system is connected with described water collector (201) and described water knockout drum (202) respectively, and described air conditioner end equipment is connected with described water collector (201) and described water knockout drum (202) respectively.
2. LNG comprehensive utilization of energy according to claim 1 system, it is characterized in that: described distributed energy resource system also comprises domestic hot-water's water supply line (308), domestic hot-water's water return pipeline (309), smoke discharge tube road (310), described lithium bromide refrigerator (205) has heat-production functions, and described lithium bromide refrigerator (205) is connected with described domestic hot-water's water supply line (308), described domestic hot-water's water return pipeline (309), described smoke discharge tube road (310) respectively.
3. LNG comprehensive utilization of energy according to claim 2 system, it is characterized in that: described ice storage unit comprises first Ice Storage Tank (210), second Ice Storage Tank (211), the 11 connecting pipe (315), the 12 connecting pipe (316), the 13 connecting pipe (317), the 14 connecting pipe (318), the 15 connecting pipe (319), the 16 connecting pipe (320), the 17 connecting pipe (321), the 18 connecting pipe (322), first motor-driven valve (V1), second motor-driven valve (V2), the 3rd motor-driven valve (V3), the 4th motor-driven valve (V4), the 5th motor-driven valve (V5), the 6th motor-driven valve (V6), the 7th motor-driven valve (V7), the 8th motor-driven valve (V8), described the 11 connecting pipe (315) one ends are communicated with described second Ice Storage Tank (211), described the 11 connecting pipe (315) other end is communicated with described the 7th connecting pipe (311), and described the 3rd motor-driven valve (V3) is installed on described the 11 connecting pipe (315); Described the 12 connecting pipe (316) one ends are communicated with described first Ice Storage Tank (210), described the 12 connecting pipe (316) other end is communicated with described the 9th connecting pipe (313) one ends, described the 9th connecting pipe (313) other end is communicated with described heat exchanger (206), and described the 4th motor-driven valve (V4) is installed on described the 12 connecting pipe (316); Described the 13 connecting pipe (317) one ends are communicated with described the 7th connecting pipe (311), described the 13 connecting pipe (317) other end is communicated with described first Ice Storage Tank (210), and described first motor-driven valve (V1) is installed on described the 13 connecting pipe (317); Described the 14 connecting pipe (318) one ends are communicated with described the 9th connecting pipe (313), described the 14 connecting pipe (318) other end is communicated with described second Ice Storage Tank (211), and described second motor-driven valve (V2) is installed on described the 14 connecting pipe (318); Described the 15 connecting pipe (319) one ends are communicated with described second Ice Storage Tank (211), described the 15 connecting pipe (319) other end is communicated with described the 8th connecting pipe (312), and described the 7th motor-driven valve (V7) is installed on described the 15 connecting pipe (319); Described the 16 connecting pipe (320) one ends are communicated with described first Ice Storage Tank (210), described the 16 connecting pipe (320) other end is communicated with described the tenth connecting pipe (314) one ends, described the tenth connecting pipe (314) other end is communicated with described heat exchanger (206), and described the 8th motor-driven valve (V8) is installed on described the 16 connecting pipe (320); Described the 17 connecting pipe (321) one ends are communicated with described the 8th connecting pipe (312), described the 17 connecting pipe (321) other end is communicated with described first Ice Storage Tank (210), and described the 6th motor-driven valve (V6) is installed on described the 17 connecting pipe (321); Described the 18 connecting pipe (322) one ends are communicated with described the tenth connecting pipe (314), described the 18 connecting pipe (322) other end is communicated with described second Ice Storage Tank (211), and described the 5th motor-driven valve (V5) is installed on described the 18 connecting pipe (322).
4. LNG comprehensive utilization of energy according to claim 3 system, it is characterized in that: described lithium bromide refrigerator (205) is communicated with by first connecting pipe (301) with described water collector (201), and described first connecting pipe (301) is used for the air-conditioner circulating water in the described water collector (201) is inputed to described lithium bromide refrigerator (205); Described lithium bromide refrigerator (205) is for formation air conditioning water that air-conditioner circulating water is cooled, described lithium bromide refrigerator (205) is connected by second connecting pipe (302) with described water knockout drum (202), and described second connecting pipe (302) is used for the cooled air conditioning water of described lithium bromide refrigerator (205) is inputed to described water knockout drum (202).
5. LNG comprehensive utilization of energy according to claim 4 system, it is characterized in that: described heat exchanger (206) is communicated with described water knockout drum (202) by the 5th connecting pipe (305), and described the 5th connecting pipe (305) is used for the air conditioning water in the described heat exchanger (206) is inputed to described water knockout drum (202); Described heat exchanger (206) is communicated with described water collector (201) by the 6th connecting pipe (306), and described the 6th connecting pipe (306) is used for the air-conditioner circulating water in the described water collector (201) is inputed to described heat exchanger (206); Ethylene glycol solution in the described heat exchanger (206) is delivered in described first Ice Storage Tank (210) or second Ice Storage Tank (211) and the phase change medium heat exchange in described first Ice Storage Tank (210) or second Ice Storage Tank (211) by described the tenth connecting pipe (314), and the ethylene glycol solution in described first Ice Storage Tank (210) or second Ice Storage Tank (211) enters to form in the described heat exchanger (206) by described the 9th connecting pipe (313) again and circulates.
6. LNG comprehensive utilization of energy according to claim 5 system, it is characterized in that: described water knockout drum (202) is connected by the 3rd connecting pipe (303) with described air conditioner end equipment (203), described the 3rd connecting pipe (303) is used for the air conditioning water in the water knockout drum (202) is inputed to described air conditioner end equipment (203), described air conditioner end equipment (203) is used for discharging cold makes the rising of air-condition freezing coolant-temperature gage form air-conditioner circulating water, described air conditioner end equipment (203) is connected by the 4th connecting pipe (304) with described water collector (201), and described the 4th connecting pipe (304) is used for the air-conditioner circulating water in the described air conditioner end equipment (203) is inputed to described water collector (201).
7. LNG comprehensive utilization of energy according to claim 6 system, it is characterized in that: described second connecting pipe (302) is provided with valve, and described the 3rd connecting pipe (303) is provided with valve, and described the 5th connecting pipe (305) is provided with valve; Described first connecting pipe (301) is provided with valve, and described the 4th connecting pipe (304) is provided with valve, and described the 6th connecting pipe (306) is provided with valve.
8. LNG comprehensive utilization of energy according to claim 7 system, it is characterized in that: described the 7th connecting pipe (311) is provided with valve, described the 8th connecting pipe (312) is provided with valve, described the 9th connecting pipe (313) is provided with valve, and described the tenth connecting pipe (314) is provided with valve.
9. LNG comprehensive utilization of energy according to claim 8 system, it is characterized in that: described ice-storage air-conditioning system also comprises main frame (207), described main frame (207) two ends link to each other with described the tenth connecting pipe (314) with described the 9th connecting pipe (313) respectively, and described main frame (207) is provided with valve with the pipeline that described the 9th connecting pipe (313) is communicated with.
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| CN108106297A (en) * | 2017-12-26 | 2018-06-01 | 广东申菱环境系统股份有限公司 | A kind of LNG cold energy for data center module recycles distributed energy resource system |
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| CN109681326A (en) * | 2019-01-16 | 2019-04-26 | 新奥数能科技有限公司 | A kind of cold, heat and power triple supply system based on cold energy of liquefied natural gas cascade utilization |
| CN114856824A (en) * | 2022-05-27 | 2022-08-05 | 华能桂林燃气分布式能源有限责任公司 | Gas turbine inlet air cooling system and cooling method with double-stage cooling coupled ice cold accumulation |
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| CN109681326A (en) * | 2019-01-16 | 2019-04-26 | 新奥数能科技有限公司 | A kind of cold, heat and power triple supply system based on cold energy of liquefied natural gas cascade utilization |
| CN114856824A (en) * | 2022-05-27 | 2022-08-05 | 华能桂林燃气分布式能源有限责任公司 | Gas turbine inlet air cooling system and cooling method with double-stage cooling coupled ice cold accumulation |
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