CN211372820U - Hundred kW-MW level SOFC cold and hot electric system - Google Patents
Hundred kW-MW level SOFC cold and hot electric system Download PDFInfo
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- CN211372820U CN211372820U CN201921893216.XU CN201921893216U CN211372820U CN 211372820 U CN211372820 U CN 211372820U CN 201921893216 U CN201921893216 U CN 201921893216U CN 211372820 U CN211372820 U CN 211372820U
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Abstract
The utility model discloses a hundred kW-MW level SOFC cold and hot electric system, including SOFC electricity generation power supply system and waste heat utilization system, solid oxidation fuel cell electricity generation power supply system takes place electrochemical reaction and changes chemical energy into the electric energy, provides the power consumption for the electricity user, and the waste heat utilization system utilizes the energy that SOFC negative pole exhaust provided for the energy supply of changes in temperature user, provides life hot water for the live hot water user. The utility model discloses with SOFC, this cold charge of absorption formula, flue gas hot water heat exchanger and the effectual integration of life hot water heat exchanger in hundred kW-MW level SOFC cooling and heating system, showing and improving hundred kW-MW level SOFC cooling and heating system's efficiency to 88%, its operation method can effectively match user load characteristic, and the operating efficiency of lift system is more than 5%.
Description
Technical Field
The utility model relates to a well low temperature heat recovery and power engineering field, especially a hundred kW-MW level SOFC cold and hot electric system.
Background
Solid Oxide Fuel Cells (SOFC) are third-generation Fuel cells, which operate at medium and high temperatures by using Solid Oxide as a medium to directly convert chemical energy stored in Fuel into electrical energy with high efficiency and environmental protection, and have a power generation efficiency of 60% or more, and can be used as a main power generation device in the future. At present, domestic SOFC research is mainly focused on a theoretical research level, domestic battery manufacturers lack system integration capacity, and large-scale (MW-level) SOFC power generation systems do not exist due to low battery service life and high manufacturing cost. Meanwhile, as the hundred kW-MW SOFC is manufactured at the initial stage, the system is integrated, and an application scene and an application method are still explored, how to improve the system efficiency of the hundred kW-MW SOFC and match the load characteristics of a user to improve the operation efficiency becomes a difficult problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a with SOFC, this cold charge of absorption formula, the effectual integration of flue gas hot water heat exchanger and life hot water heat exchanger is in hundred kW-MW level SOFC cooling and heating system, is showing the efficiency that has improved hundred kW-MW level SOFC cooling and heating system, provides hundred kW-MW level SOFC cooling and heating system's operation method simultaneously and can effectively match user load characteristic, lift system operating efficiency.
The utility model adopts the following technical proposal:
a hundred kW-MW-level SOFC (solid oxide fuel cell) cold and hot electric system comprises an SOFC power generation and supply system and a waste heat utilization system, wherein the SOFC power generation and supply system generates electrochemical reaction to convert chemical energy into electric energy and provide electricity for electric users; after the electrochemical reaction is finished, returning part of the SOFC anode outlet gas of the SOFC power generation and supply system to the SOFC power generation and supply system for recycling; the other part is mixed with SOFC cathode outlet gas for combustion, chemical energy of gas fuel which is not fully reacted in the electrochemical reaction is converted into internal energy through mixed combustion of SOFC anode outlet gas and SOFC cathode outlet gas, the combusted tail gas is discharged to the atmosphere through an SOFC system and a waste heat utilization system in sequence, and the combusted tail gas is used as energy to be supplied to an SOFC power generation and supply system and a waste heat utilization system; the waste heat utilization system utilizes the burnt tail gas to supply energy to the cooling and heating users and supply heat to the biochemical hot water users.
The hundred kW-MW stage SOFC cold and hot electric system comprises the SOFC power generation and supply system and the SOFC cold and hot electric system comprises: the system comprises a desulfurizing device, a reformer, a blower, an air preheater, an electric heating device, an SOFC (solid oxide fuel cell), a flue gas bypass valve and a post combustion chamber, wherein the SOFC comprises an SOFC anode and an SOFC cathode, the desulfurizing device is communicated with the reformer, the reformer is respectively communicated with the air preheater and the SOFC anode, the blower is communicated with the air preheater, the air preheater is communicated with a waste heat utilization system through the flue gas bypass valve, the electric heating device is positioned on a pipeline between the air preheater and the SOFC cathode, and the post combustion chamber is communicated with the reformer.
The hundred kW-MW stage SOFC thermoelectric cooling system comprises a tap water pump, a separator IV, a softened water device, a softened water tank, an absorption type refrigerating device, a separator II, a cold and heat accumulation tank, a valve I, a mixer I, a cold and warm user, a delivery pump, a flue gas hot water heat exchanger, a separator III, a domestic hot water storage tank, a valve II, a mixer II, a domestic hot water system side pump, a domestic hot water heat exchanger and a domestic hot water user, wherein an air inlet of the absorption type refrigerating device is connected with an air outlet of an air preheater, an air outlet of the absorption type refrigerating device is connected with an air inlet of the flue gas hot water heat exchanger, a water outlet of the absorption type refrigerating device is respectively connected with a water inlet of the cold and heat accumulation tank and a water inlet of the mixer I through a pipeline provided with the valve I, a water outlet of the mixer I is connected with the cold and warm user, the cold and warm user passes through the delivery pump and softens water installation intercommunication, soften water installation and soften the water tank and pass through the pipe connection, soften water installation and flue gas hot water heat exchanger water inlet and pass through the pipe connection, flue gas hot water heat exchanger delivery port passes through separator III and is connected with life hot water storage tank water inlet and blender II water inlet respectively, life hot water storage tank delivery port and blender II water inlet are through being provided with valve II's pipe connection, blender II's delivery port and life hot water heat exchanger hot water inlet are connected, life hot water heat exchanger hot water delivery port passes through life hot water system side pump and is connected with the water installation of softening, life hot water heat exchanger's cold water inlet and separator IV delivery port are connected, life hot water heat exchanger cold water delivery port is connected with life hot.
In the hundred kW-MW SOFC cold and hot electric system, the capacity of the softening water tank is 3m3-5m3。
In the hundred kW-MW SOFC cold and hot electric system, the temperature of the tail gas discharged to the atmosphere after combustion is 71-75 ℃.
The operation method of the hundred kW-MW stage SOFC cold and hot electric system comprises the following steps:
step S1: in the SOFC preheating stage, a flue gas bypass valve is opened, a reformer, a blower, an air preheater, an electric heating device and an SOFC are started, air enters the air preheater after being pressurized by the blower, enters the SOFC cathode through the air preheater and the pipeline, the electric heating device heats the air in the pipeline between the air preheater and the SOFC, the air out of the SOFC cathode enters a post-combustion chamber, the air at the outlet of the post-combustion chamber enters the reformer, the air at the outlet of the reformer returns to the air preheater again, the air at the outlet of the air preheater is discharged into the atmosphere through the flue gas bypass valve, the preheating process of another wheel pair SOFC is started in such a circulating way, after a period of time, the SOFC is preheated to a specified temperature, the specified temperature is 600-800 ℃, and the SOFC;
step S2: the SOFC stable operation stage, namely the SOFC preheating stage is finished, the electric heating device and the flue gas bypass valve are closed, natural gas is desulfurized by the desulfurizer and then enters the reformer to be mixed and reformed with outlet gas of the SOFC anode part, the reformed mixed gas enters the SOFC anode and is subjected to electrochemical reaction with air entering the SOFC cathode in the SOFC, chemical energy is directly converted into electric energy, and the electric energy is converted into alternating current through the direct current-alternating current converter to be used by users; after the electrochemical reaction is finished, the SOFC anode outlet gas is divided into two parts through a flow divider I, one part of SOFC anode outlet gas enters a reformer to be reformed with natural gas passing through a desulphurization device, mixed gas enters an SOFC anode after reforming, the electrochemical reaction is carried out on the mixed gas and air entering an SOFC cathode after being preheated by an air preheater after being pressurized by a blower inside the SOFC, the air entering the SOFC cathode is pressurized by the blower, then is conveyed to the air preheater, enters the cathode after being preheated by the air preheater, and the cycle is carried out; the other part of SOFC anode outlet gas enters a post-combustion chamber and is mixed and combusted with SOFC cathode outlet gas, the chemical energy of the gas fuel which is not fully reacted in the electrochemical reaction is converted into internal energy through the mixed combustion of the SOFC anode outlet gas and the SOFC cathode outlet gas, the post-combustion chamber outlet gas sequentially passes through a reformer to provide heat for the reformer, the air preheater provides heat for an air preheater, an absorption refrigerating device provides energy for the refrigeration and heating of the absorption refrigerating device, a flue gas hot water heat exchanger provides heat for softened water which exchanges heat in the flue gas hot water heat exchanger, the post-combustion chamber outlet gas passes through the flue gas hot water heat exchanger and then is discharged into the atmosphere, tap water is pressurized by a tap water pump and then is divided into two parts through a separator IV, one part of tap water provides cold water/hot water for cold and warm users through a softened water device, a softened water tank, an absorption refrigerating device, a separator II, a cold and, the return water of the cold and warm users is pumped into the softened water device through the delivery pump, the circulation supplies energy to the cold and warm users, cold water is provided for the cold users in summer, the absorption type refrigerating device refrigerates, the cold and heat storage tank stores the cold water, and warm water is provided for the warm users in winter, the absorption type refrigerating device heats, and the cold and heat storage tank stores the warm water; the other part of tap water exchanges heat with hot water obtained by heat exchange of the flue gas hot water heat exchanger in the domestic hot water heat exchanger to provide domestic hot water for domestic hot water users, the hot water exchanged in the domestic hot water heat exchanger is pumped into the water softening device by the domestic hot water side pump, and domestic hot water is provided for the domestic hot water users in a circulating mode. After the waste heat utilization system operates stably, the water supply amount of tap water is the domestic hot water amount and the water supplement amount of cold and warm users.
In the foregoing method for operating a hundred kW-MW SOFC cooling and heating system, when the SOFC is stopped for less than 48 hours, the method further includes:
and in the SOFC heat preservation stage, starting the electric heating device, opening the flue gas bypass valve, keeping the reformer, the blower, the air preheater and the SOFC in the running state, and sequentially closing other devices of the SOFC cold and heat power system to start the cycle process of the SOFC preheating stage.
In the operation method of the hundred kW-MW stage SOFC cold and hot electric system, when the system operates in summer, the operation method of the waste heat utilization system comprises the following processes:
tap water is pressurized by a tap water pump and then is divided into two parts by a separator IV, one part of the tap water passes through a softened water device and is processed into softened water by the tap water, the softened water out of the softened water device is divided into two parts, one part of the softened water enters a softened water tank and then exits the softened water tank and enters an absorption type refrigerating device provided with energy by gas at the outlet of a post-combustion chamber for refrigeration, cold water obtained by the absorption type refrigerating device is divided into two parts by a separator II, when the cold load is low, one part of the cold water is directly supplied for cold and warm users by a mixer I, the other part of the cold water is supplied to a cold and warm user and enters a cold and heat storage tank for storage, and at the moment, a valve I is; when the cold load is high, all cold supply water obtained after refrigeration by an absorption refrigeration device enters a mixer I through a separator II, a valve I is opened, cold storage and heat storage tanks discharge the stored cold supply water, two water streams jointly enter the mixer I to supply cold water for cold and warm users, the temperature of the cold supply water is 5-9 ℃, return water of the cold and warm users is pumped into a softened water device through a delivery pump for recycling, softened water of the softened water device is discharged, the other part of the cold supply water enters a flue gas hot water heat exchanger for providing energy by gas at an outlet of a post-combustion chamber for heat exchange, hot water obtained through heat exchange of the flue gas hot water heat exchanger is divided into two parts through a separator III, when the load of the domestic hot water is low, one part of the hot water enters the domestic hot water heat exchanger for heat exchange through the mixer II, the other part of the hot water enters a domestic hot water storage; when the load of the domestic hot water is high, the hot water obtained by heat exchange of the flue gas hot water heat exchanger completely enters the mixer II through the separator III, meanwhile, the valve II is opened, the hot water stored in the domestic hot water storage tank also enters the mixer II, the two hot water streams completely enter the domestic hot water heat exchanger for heat exchange, the hot water after heat exchange of the domestic hot water heat exchanger is pumped into the softening water device through the side pump of the domestic hot water system for recycling, the tap water is pressurized by the tap water pump and then is divided into two parts through the separator IV, one part of the tap water passes through the softening water device and is recycled according to the above steps, the other part of the tap water enters the domestic hot water heat exchanger for heat exchange with the hot water, and the tap water is subjected to heat exchange to heat. After the waste heat system operates stably, the water supply amount of tap water is the domestic hot water amount and the water supplement amount of cold water supplied by cold and warm users.
In the operation method of the hundred kW-MW stage SOFC cold and hot electric system, when the system operates in winter, the operation method of the waste heat utilization system comprises the following processes:
tap water is pressurized by a tap water pump and then is divided into two parts by a separator IV, one part of the tap water passes through a softened water device and is processed into softened water by the tap water, softened water out of the softened water device is divided into two parts, one part of the softened water enters a softened water tank and then exits the softened water tank and enters an absorption type refrigerating device which is powered by gas at the outlet of a post-combustion chamber to heat, heating water obtained by heating of the absorption type refrigerating device is divided into two parts by a separator II, when the heat load is low, one part of the heating water directly supplies heating water for cold and warm users by a mixer I, the other part of the heating water enters a cold and heat storage tank to be stored, and at the moment, a valve I is in a closed state; when the heat load is high, all the heating water obtained by heating of the absorption type refrigerating device enters the mixer I through the separator II, the valve I is opened, the cold and heat storage tank discharges the stored heating water, the two water flows jointly enter the mixer I to supply the heating water for cold and hot users, the temperature of the heating water is 85-95 ℃, the return water of the cold and hot users is pumped into the softened water device for recycling through the delivery pump, the softened water of the softened water device is discharged, the other part of the return water enters the flue gas hot water heat exchanger for supplying energy to the outlet gas of the afterburner for heat exchange, the hot water obtained by heat exchange of the flue gas hot water heat exchanger is divided into two parts through the separator III, when the load of the domestic hot water is low, one part of the hot water enters the domestic hot water heat exchanger for heat exchange through the mixer II, the other part of the hot water enters the domestic hot; when the load of the domestic hot water is high, the hot water exchanged by the flue gas hot water heat exchanger completely enters the mixer II through the separator III, meanwhile, the valve II is opened, the hot water stored in the domestic hot water storage tank also enters the mixer II, two hot water flows completely enter the domestic hot water heat exchanger for heat exchange, the hot water after the heat exchange of the domestic hot water heat exchanger is pumped into the softening water device through the side pump of the domestic hot water system for recycling, the tap water is pressurized by the tap water pump and then is divided into two parts through the separator IV, one part of the tap water passes through the softening water device and is recycled according to the above steps, the other part of the tap water enters the domestic hot water heat exchanger for heat exchange with the hot water, and the tap water heat exchange is used for providing the. After the waste heat system operates stably, the water supply amount of tap water is the domestic hot water amount and the water supplement amount of the heating water for cold and warm users.
In the operation method of the hundred kW-MW SOFC cold and thermal power system, the hot tap water temperature is 55-60 ℃ and the hot supply water temperature is 65-70 ℃.
Compared with the prior art, the utility model discloses an useful part lies in:
1. the utility model discloses a hundred kW-MW level SOFC thermoelectric system can provide the energy of three kinds of forms of cold and hot electricity for the user simultaneously to hundred kW-MW level SOFC thermoelectric system contains cold-storage heat accumulation jar and life hot water storage tank, has cold and hot load regulatory function.
2. The utility model relates to an among hundred kW-MW level SOFC cooling and heating system, used the demineralized water device to handle the running water, because demineralized water device low price has reduced hundred kW-MW level SOFC cooling and heating system manufacturing cost.
3. The utility model provides a waste heat utilization system can effectively utilize the afterburner to discharge fume the waste heat, and after waste heat utilization system utilized the afterburner to discharge fume the waste heat, the temperature that afterburner export gas passes through behind the flue gas hot water heat exchanger was 71-75 ℃, improves SOFC cold and hot electrical system's efficiency to 88%.
4. The utility model discloses well natural gas gets into SOFC positive pole and uses as solid oxide fuel cell's fuel behind desulphurization unit, therefore NOx, SO in SOFC negative pole exhaust gasXThe content of (A) is less than 5mg/m3The clean and environment-friendly hundred kW-MW SOFC cold and hot electric system is realized.
5. The utility model discloses among hundred kW-MW level SOFC cooling and heating system, used electric heater unit to preheat SOFC and keep warm, shortened battery start time, battery start time is SOFC start time 10% -50% among the prior art.
6. The utility model discloses hundred kW-MW level SOFC cooling and heating electric system operation method effectively matches user load characteristic, promotes system operating efficiency more than 5%.
Drawings
FIG. 1 is a schematic structural diagram of a hundred kW-MW stage SOFC cooling and heating system;
the meaning of the reference numerals: 1-desulphurization unit 2-reformer 3-blower 4-air preheater 5-electric heating unit 6-SOFC 7-DC AC converter 8-electricity consumer 9-separator I10-afterburner 11-absorption refrigerating unit 12-separator II 13-cold accumulation and heat accumulation tank 14-valve I15-mixer I16-cold and heat consumer 17-delivery pump 18-running water pump 19-separator IV 20-softened water unit 21-softened water tank 22-flue gas hot water heat exchanger 23-separator III 24-domestic hot water storage tank 25-valve II 26-mixer II 27-domestic hot water heat exchanger 28-domestic hot water system side pump 29-domestic hot water consumer 30-flue gas bypass valve 31-anode SOFC 32-SOFC cathode lower combined with attached water The invention is further illustrated by the figures and the detailed description.
Detailed Description
As shown in fig. 1, the SOFC cooling and heating system in hundred kW-MW level includes an SOFC power generation and supply system and a waste heat utilization system, where the SOFC power generation and supply system generates an electrochemical reaction to convert chemical energy into electric energy to provide electricity for an electricity consumer 8; after the electrochemical reaction is finished, part of the gas at the outlet of the SOFC anode 31 of the SOFC power generation and supply system returns to the SOFC power generation and supply system for recycling; the other part is mixed with SOFC cathode 32 outlet gas for combustion, chemical energy of gas fuel which is not fully reacted in the electrochemical reaction is converted into internal energy through mixed combustion of SOFC anode outlet gas and SOFC cathode outlet gas, the combusted tail gas is discharged to the atmosphere through an SOFC system and a waste heat utilization system in sequence, and the combusted tail gas is used as energy to be supplied to an SOFC power generation and supply system and a waste heat utilization system for use; the waste heat utilization system utilizes the burnt tail gas to supply energy to the cooling and heating users 16 and supply heat to the biochemical hot water users 29. The system provides energy of three forms of cold, heat and electricity for users, and a waste heat utilization system in the hundred kW-MW SOFC cold and heat power system comprises a cold and heat storage tank and a domestic hot water storage tank and has a cold and heat load adjusting function. Further, the temperature of the burned tail gas exhausted to the atmosphere of the hundred kW-MW SOFC cold and heat electric system is 71-75 ℃. The tail gas after burning loops through SOFC system and waste heat utilization system and discharges to the atmosphere, and the tail gas temperature after the burning of this moment discharging to the atmosphere is 71-75 ℃, thereby will the utility model discloses 88% is mentioned to hundred kW-MW level SOFC cooling and heating electric system's efficiency.
As shown in fig. 1, the SOFC power generation and supply system includes: the desulfurization device 1, the reformer 2, the blower 3, the air preheater 4, the electric heating device 5, the SOFC6, the flue gas bypass valve 30 and the afterburner 10, the SOFC6 includes an SOFC anode 31 and an SOFC cathode 32, the desulfurization device 1 is communicated with the reformer 2, the reformer 2 is respectively communicated with the air preheater 4 and the SOFC anode 31, the blower 3 is communicated with the air preheater 4, the air preheater 4 is communicated with a waste heat utilization system through the flue gas bypass valve 30, the electric heating device 5 is positioned on a pipeline between the air preheater 4 and the SOFC cathode 32, and the afterburner 10 is communicated with the reformer 2. The electric heating device 5 is positioned on the pipeline between the air preheater 4 and the SOFC cathode 32 and used for heating air passing through the pipeline, the electric heating device 5 preheats and keeps warm for the SOFC6 by heating the air passing through the pipeline, the starting time of the battery is shortened, and the starting time of the battery is 10% -50% of the starting time of the SOFC6 in the prior art.
As shown in fig. 1, the waste heat utilization system comprises a tap water pump 18, a separator IV19, a softened water device 20, a softened water tank 21, an absorption type refrigerating device 11, a separator II12, a cold and heat accumulation tank 13, a mixer I15, a cold and warm user 16, a valve I14, a delivery pump 17, a flue gas and hot water heat exchanger 22, a separator III23, a domestic hot water storage tank 24, a valve II25, a mixer II26, a domestic hot water system side pump 28, a domestic hot water heat exchanger 27 and a domestic hot water user 29, wherein an air inlet of the absorption type refrigerating device 11 is connected with an air outlet of an air 4, an air outlet of the absorption type refrigerating device 11 is connected with an air inlet of the flue gas and hot water heat exchanger 22, a water outlet of the absorption type refrigerating device 11 is respectively connected with a water inlet of the cold and heat accumulation tank 13 and a water inlet of the mixer I15 through the separator I12, a water outlet of the cold and, the water outlet of the mixer I15 is connected with a cooling and heating user 16, the cooling and heating user 16 is communicated with a softened water device 20 through a pump 17 pump, the softened water device 20 is connected with a softened water tank 21 through a pipeline, the softened water device 20 is connected with a water inlet of a flue gas hot water heat exchanger 22 through a pipeline, the water outlet of the flue gas hot water heat exchanger 22 is connected with a water inlet of a life hot water storage tank 24 and a water inlet of a mixer II26 through a separator III23, the water outlet of the life hot water storage tank 24 is connected with a water inlet of the mixer II26 through a pipeline provided with a valve II25, the water outlet of the mixer II26 is connected with a hot water inlet of theThe hot water outlet of the hot water heat exchanger 27 is connected with the softened water device 20 through the domestic hot water system side pump 28, the cold water inlet of the domestic hot water heat exchanger 27 is connected with the water outlet of the separator IV19, and the cold water outlet of the domestic hot water heat exchanger 27 is connected with a domestic hot water user 29. Further, the volume of the softening water tank 21 is 3-5m3. The volume of the softened water tank is 3-5m according to the maximum water supply amount and the minimum water supply amount when the waste heat utilization system operates3。
Claims (5)
1. The SOFC cooling and heating system is characterized by comprising an SOFC power generation and supply system and a waste heat utilization system, wherein the SOFC power generation and supply system generates electrochemical reaction to convert chemical energy into electric energy and provide electricity for electric users (8); after the electrochemical reaction is finished, part of the gas at the outlet of the SOFC anode (31) of the SOFC power generation and supply system returns to the SOFC power generation and supply system for reuse; the other part is mixed with SOFC cathode (32) outlet gas for combustion, the SOFC anode outlet gas and the SOFC cathode outlet gas are mixed and combusted to convert chemical energy of gas fuel which is not fully reacted in the electrochemical reaction into internal energy, the combusted tail gas is discharged to the atmosphere sequentially through an SOFC system and a waste heat utilization system, and the combusted tail gas is used as energy to be supplied to the SOFC power generation and supply system and the waste heat utilization system; the waste heat utilization system utilizes the burnt tail gas to supply energy to a cooling and heating user (16) and supply heat to a domestic hot water user (29).
2. The hundred kW-MW class SOFC cold thermal electric system of claim 1, the SOFC power generation and supply system is characterized by comprising a desulfurizing device (1), a reformer (2), a blower (3), an air preheater (4), an electric heating device (5), an SOFC (6), a flue gas bypass valve (30) and a post-combustion chamber (10), wherein the SOFC (6) comprises an SOFC anode (31) and an SOFC cathode (32), the desulfurizing device (1) is communicated with the reformer (2), the reformer (2) is respectively communicated with the air preheater (4) and the SOFC anode (31), the blower (3) is communicated with the air preheater (4), the air preheater (4) is communicated with a waste heat utilization system through the flue gas bypass valve (30), the electric heating device (5) is positioned on a pipeline between the air preheater (4) and the SOFC cathode (32), and the post-combustion chamber (10) is communicated with the reformer (2).
3. The hundred-kW-MW-level SOFC cold-thermal power system as recited in claim 1, wherein the waste heat utilization system comprises a tap water pump (18), a separator IV (19), a softened water device (20), a softened water tank (21), an absorption refrigeration device (11), a separator II (12), a cold and heat storage tank (13), a valve I (14), a mixer I (15), a cold and warm user (16), a delivery pump (17), a flue gas hot water heat exchanger (22), a separator III (23), a domestic hot water storage tank (24), a valve II (25), a mixer II (26), a domestic hot water system side pump (28), a domestic hot water heat exchanger (27) and a domestic hot water user (29), an air inlet of the absorption refrigeration device (11) is connected with an air outlet of the air preheater (4), an air outlet of the absorption refrigeration device (11) is connected with an air inlet of the flue gas hot water heat exchanger (22), the water outlet of the absorption refrigeration device (11) is respectively connected with the water inlet of a cold and heat accumulation tank (13) and the water inlet of a mixer I (15) through a separator II (12), the water outlet of the cold and heat accumulation tank (13) is connected with the water inlet of the mixer I (15) through a pipeline provided with a valve I (14), the water outlet of the mixer I (15) is connected with a cold and warm user (16), the cold and warm user (16) is communicated with a softened water device (20) through a delivery pump (17), the softened water device (20) is connected with a softened water tank (21) through a pipeline, the softened water device (20) is connected with the water inlet of a flue gas hot water heat exchanger (22) through a pipeline, the water outlet of the flue gas hot water heat exchanger (22) is respectively connected with the water inlet of a domestic hot water storage tank (24) and the water inlet of the mixer II (26) through a separator III (23), the water outlet of the domestic hot water storage tank (24) is connected with, the water outlet of the mixer II (26) is connected with the hot water inlet of the domestic hot water heat exchanger (27), the hot water outlet of the domestic hot water heat exchanger (27) is connected with the softened water device (20) through a domestic hot water system side pump (28), the cold water inlet of the domestic hot water heat exchanger (27) is connected with the water outlet of the separator IV (19), and the cold water outlet of the domestic hot water heat exchanger (27) is connected with a domestic hot water user (29).
4. The hundred kW-MW stage SOFC cold thermal electric system according to claim 3, wherein the softened water tank (21) has a volume of 3m3-5m3。
5. The hundred kW-MW class SOFC cold thermal system according to claim 1, characterised by a post combustion tail gas temperature vented to atmosphere of 71-75 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701826A (en) * | 2019-11-05 | 2020-01-17 | 中国华电科工集团有限公司 | Hundred kW-MW-level SOFC (solid oxide fuel cell) cooling and heating system and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110701826A (en) * | 2019-11-05 | 2020-01-17 | 中国华电科工集团有限公司 | Hundred kW-MW-level SOFC (solid oxide fuel cell) cooling and heating system and operation method thereof |
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