CN113818940B - A system and method for generating electricity using waste heat from ship desulfurization pre-cooling water - Google Patents
A system and method for generating electricity using waste heat from ship desulfurization pre-cooling water Download PDFInfo
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- CN113818940B CN113818940B CN202111135380.6A CN202111135380A CN113818940B CN 113818940 B CN113818940 B CN 113818940B CN 202111135380 A CN202111135380 A CN 202111135380A CN 113818940 B CN113818940 B CN 113818940B
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- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 34
- 230000023556 desulfurization Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000498 cooling water Substances 0.000 title claims abstract description 17
- 230000005611 electricity Effects 0.000 title claims 2
- 238000001816 cooling Methods 0.000 claims abstract description 74
- 239000007921 spray Substances 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 239000002351 wastewater Substances 0.000 claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 238000010248 power generation Methods 0.000 claims abstract description 15
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- 239000013535 sea water Substances 0.000 claims description 37
- 230000003009 desulfurizing effect Effects 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007791 liquid phase Substances 0.000 claims description 8
- 239000012071 phase Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/085—Sulfur or sulfur oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a system and a method for generating power by utilizing waste heat of ship desulfurization pre-cooling water, wherein the system is arranged based on a pre-cooling spray system, an evaporator is communicated with an air inlet throat at the outlet of the lower end, the evaporator is communicated with a working pump, the working pump is communicated with a liquid storage tank, a liquid working medium is contained in the liquid storage tank, the evaporator is communicated with an expansion generator at the outlet of a gaseous working medium, and the method is characterized in that the liquid working medium is heated into the gaseous working medium by utilizing the waste heat of the pre-cooling spray waste water generated by the pre-cooling spray system, and the gaseous working medium is used as an expanding agent to drive the expansion generator to generate power in the expansion generator. According to the invention, the pre-cooling spraying waste water of the pre-cooling spraying system in the desulfurization system is connected into the waste heat power generation system, and the waste heat of the pre-cooling spraying waste water is utilized to generate power, so that the energy utilization efficiency is improved, the fuel cost is effectively saved, and meanwhile, the waste gas treatment effect of the desulfurization system is effectively ensured, so that the requirement of low sulfur emission is met.
Description
Technical Field
The invention relates to a power generation system and a method, in particular to a system and a method for generating power by utilizing ship desulfurization pre-cooling water waste heat.
Background
The ship is a transport means with high energy consumption, and the ship operation is accompanied by serious environmental pollution. At present, EEDI (new energy efficiency design index) is an index for checking the running energy consumption of a ship, and for the problem of low energy utilization efficiency of the ship, the EEDI is faced with additional fines in addition to high fuel cost so as to compensate the damage to the environment.
At present, a large number of ships are equipped with ship desulfurization systems, and exhaust gas generated by combusting diesel fuel by a ship main engine is treated by the desulfurization systems. In the process of treating high-temperature waste gas by a desulfurization system, a large amount of waste heat can be formed, so that the utilization efficiency of the waste heat can be effectively improved, the method is one of important ways for improving the self competitiveness of the shipbuilding industry, if the waste heat cannot be fully utilized, the fuel cost can be further improved, the energy utilization efficiency can be reduced, and therefore, in order to effectively reduce the energy consumption index of ship operation, the need for providing a power generation system and a method capable of fully utilizing the waste heat of the ship desulfurization pre-cooling water is urgent.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a system and a method for generating power by utilizing the waste heat of ship desulfurization pre-cooling water.
In order to solve the technical problems, the invention adopts the technical scheme that the system for generating power by utilizing the waste heat of the ship desulfurization pre-cooling water is arranged based on a pre-cooling spray system, and the pre-cooling spray system is positioned in an air inlet throat at one side of a desulfurizing tower;
The air inlet throat is communicated with the evaporator at the outlet of the lower end, and pre-cooling spray water generated by the pre-cooling spray system flows into the evaporator through the outlet of the lower end of the air inlet throat; the evaporator is communicated with a working pump, the working pump is communicated with a liquid storage tank, and liquid working medium is contained in the liquid storage tank;
The liquid working medium absorbs heat and then becomes a gaseous working medium, the evaporator is communicated with the expansion generator at the outlet of the gaseous working medium, and the gaseous working medium is used as an expanding agent to drive the expansion generator in the expansion generator to generate power.
Further, the rear end of the expansion generator is communicated with a condenser, the condenser is communicated with a sea water pump, the condenser is also communicated with a liquid storage tank, sea water pumped by the sea water pump provides a cold source for the condenser, a working medium condensed into a liquid phase enters the liquid storage tank, and the working medium is pumped again by the working medium pump for the next cycle.
Further, the evaporator is communicated with a heat exchanger at the water outlet of the pre-cooling spray wastewater, and the seawater pump is communicated with the pre-cooling spray system through the heat exchanger.
Further, the top of the desulfurizing tower is provided with a desulfurizing tower exhaust port, and the top of the air inlet throat is provided with a desulfurizing tower air inlet.
A power generation method of a system for generating power by utilizing ship desulfurization pre-cooling water waste heat is characterized in that pre-cooling spray waste water containing waste heat is discharged from the lower end of an air inlet throat where an air inlet of a desulfurizing tower is positioned and flows into an evaporator, and meanwhile, a working pump pumps liquid organic working medium in a liquid storage tank and pumps the liquid organic working medium into the evaporator;
The gaseous organic working medium enters the expansion generator to convert the pressure energy and the heat energy of the gaseous organic working medium into mechanical energy, and then the expansion machine of the expansion generator is driven to drag the generator to convert the mechanical energy into electric energy.
Further, the temperature and pressure of the gaseous organic working medium after acting in the expansion generator are reduced, the gaseous organic working medium is in a gas-liquid two-phase state and enters the condenser to exchange heat with seawater supplied by the seawater pump, the organic working medium in the gas-liquid two-phase state is completely condensed into a liquid phase, the liquid working medium enters the liquid storage tank, and the liquid working medium is pumped again by the working medium pump for use, so that the cyclic utilization of the condensed liquid working medium is realized.
Further, the pre-cooling spray wastewater still containing waste heat enters an evaporator to exchange heat with seawater supplied by a seawater pump, and the path of water of the seawater pump is preheated and then used for the work of the pre-cooling spray system.
Further, the waste heat of the pre-cooling spraying waste water is obtained by absorbing the heat of high-temperature waste gas generated by a ship host in the primary cooling process of the pre-cooling spraying system.
The invention discloses a system and a method for generating power by utilizing waste heat of ship desulfurization pre-cooling water, which are characterized in that pre-cooling spraying waste water of a pre-cooling spraying system in a desulfurization system is connected into a waste heat power generation system, so that the ship is simultaneously assembled with the waste heat power generation system and the desulfurization system, the power generation system generates power by utilizing the waste heat of the pre-cooling spraying waste water, and the power generated by the power generation system can be used for running of the ship, thereby improving the energy utilization efficiency and effectively saving the fuel cost. Meanwhile, the waste heat of the pre-cooling spraying wastewater is also used for preheating spraying water used by the pre-cooling spraying system, and the assembly of the power supply system can not cause the problem of overhigh back pressure of the desulfurization system, so that the waste gas treatment effect of the desulfurization system is effectively ensured, and the requirement of low sulfur emission is met.
Drawings
FIG. 1 is a schematic diagram of the system connection relationship of the present invention.
1. The device comprises a condenser, an expansion generator, a3 part, an evaporator, a4 part pre-cooling spray system, a 5 part of a desulfurizing tower air inlet, a 6 part of a desulfurizing tower air outlet, a 7 part of a spray system, a 8 part of a sea water pump, a 9 part of a heat exchanger, a 10 part of a working medium pump, a 11 part of a liquid storage tank, a 12 part of a desulfurizing tower.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The system for generating power by utilizing the ship desulfurization pre-cooling water waste heat is based on the design of the prior ship pre-cooling spray system 4, as shown in figure 1, the pre-cooling spray system 4 is matched with a spray system 7, the spray system 7 is positioned in a desulfurization tower 12, one side of the desulfurization tower 12 is communicated with an air inlet throat, and the pre-cooling spray system 4 is positioned in the air inlet throat;
The power generation system comprises an evaporator 3, an expansion generator 2, a condenser 1, a working medium pump 10 and a sea water pump 8, wherein the evaporator 3 is communicated with an inlet throat at the outlet of the lower end, the evaporator 3 is communicated with a working pump 10, the working pump 10 is communicated with a liquid storage tank 11, pre-cooling spray water generated by a pre-cooling spray system 4 flows into the evaporator 3 through the outlet of the lower end of the inlet throat, pre-cooling spray wastewater containing waste heat enters the evaporator 3, meanwhile, the working medium pump 10 sucks liquid working medium in the liquid storage tank 11 and pumps the liquid working medium into the evaporator 3 to exchange heat with the pre-cooling spray wastewater containing the waste heat, the liquid working medium absorbs heat and then becomes a gaseous working medium, the evaporator 3 is communicated with the expansion generator 2 at the outlet of the gaseous working medium, and the gaseous working medium is used as an expanding agent to drive the expansion generator 2 to generate power.
The gaseous working medium is cooled and depressurized after acting, and is in a gas-liquid two-phase state, the expansion generator 2 is further communicated with the condenser 1, the working medium in the gas-liquid two-phase state enters the condenser 1 to exchange heat with seawater pumped into the condenser 1 by the seawater pump 8, at the moment, all the working medium is condensed into a liquid phase, enters the liquid storage tank 11, and is pumped again by the working medium pump 10 for the next cycle.
For the pre-cooling spray wastewater in the evaporator 3, the temperature is reduced due to the fact that the pre-cooling spray wastewater is absorbed by the liquid working medium, and the waste heat which is not utilized is still contained, in order to further fully utilize the waste heat, the evaporator 3 is communicated with the heat exchanger 9 at the water outlet of the pre-cooling spray wastewater, the heat exchanger 9 is communicated with the pre-cooling spray system 4 and is communicated with the seawater pump 8, therefore, the pre-cooling spray wastewater flowing out of the evaporator 3 enters the heat exchanger 9 to exchange heat with the seawater supplied by the seawater pump 8, the temperature is raised after the seawater absorbs heat, the pre-cooling spray wastewater is used as the pre-cooling spray water of the pre-cooling spray system, the water temperature of the pre-cooling spray water is higher than the normal seawater temperature used by the spray system, the problem of overhigh back pressure of a desulfurization system is not caused, and the desulfurization spray effect of a desulfurization tower is effectively ensured.
The sea water pump 8 is divided into three paths, one path is communicated with the spray system 7, the other path is communicated with the pre-cooling spray system 4 through the heat exchanger 9, the other path is communicated with the condenser 1, high-temperature waste gas generated by a ship host enters an air inlet throat of the desulfurizing tower 12 from the air inlet 5 of the desulfurizing tower, is firstly cooled for the first time by the pre-cooling spray system 4 at the air inlet throat, enters the desulfurizing tower 12, is subjected to desulfurization treatment by the spray system 7, and is finally discharged from the air outlet 6 of the desulfurizing tower.
The high-temperature waste gas generated by the host machine is subjected to primary cooling through the pre-cooling spraying system 4, meanwhile, the pre-cooling spraying water absorbs the heat of the high-temperature waste gas to form pre-cooling spraying waste water, the pre-cooling spraying waste water contains a large amount of waste heat, and if the pre-cooling spraying waste water is directly discharged, the serious waste of energy can be caused.
The method for generating power by utilizing the ship desulfurization pre-cooling water waste heat is realized based on the power generation system and specifically comprises the steps that pre-cooling spray wastewater is discharged from the lower end of an air inlet throat where an air inlet 5 of a desulfurizing tower is positioned and flows into an evaporator 3, meanwhile, a working pump 10 pumps liquid organic working medium in a liquid storage tank 11 and pumps the liquid organic working medium into the evaporator 3, and the high-temperature pre-cooling spray wastewater exchanges heat with low-temperature liquid organic working medium in the evaporator 3, wherein the liquid organic working medium absorbs heat to be changed into gaseous organic working medium;
The temperature and pressure of the gas-state organic working medium after working are reduced, the gas-state organic working medium is in a gas-liquid two-phase state and enters the condenser 1 to exchange heat with seawater supplied by the seawater pump 8, the gas-liquid two-phase state organic working medium is completely condensed into a liquid phase, the liquid phase is fed into the liquid storage tank 11, the cyclic utilization of the condensed liquid working medium is realized, and the liquid working medium is pumped into the evaporator 3 again by the working medium pump 10 for the next working cycle.
The pre-cooling spraying wastewater cooled in the evaporator 3 enters the heat exchanger 9 and exchanges heat with the seawater pumped by the seawater pump 8, and the seawater is preheated and heated and then is used for desulfurization spraying of the pre-cooling spraying system, so that the reutilization of waste heat is realized, the energy utilization efficiency is further provided, and the desulfurization spraying effect is ensured.
Normally, the sea water temperature pumped by the sea water pump 8 is about 32 ℃, the waste gas generated by the main engine is 220 ℃ high-temperature waste gas, the 220 ℃ high-temperature waste gas enters the air inlet throat through the air inlet 5 of the desulfurizing tower, the pre-cooling spray water is subjected to primary cooling through the pre-cooling spray system, absorbs a large amount of heat in the process of cooling the high-temperature waste gas, is heated to about 120 ℃, is discharged from the lower end of the air inlet throat in the form of pre-cooling spray waste water, enters the evaporator to be heated by liquid organic working medium, is cooled to about 90 ℃ after heat exchange, then flows into the heat exchanger, and is preheated to 58 ℃ by the pre-cooling spray water pumped into the pre-cooling spray system by the sea water pump 8, so that the pre-cooling spray water is preheated, and the full utilization of waste heat is realized. Finally, the pre-spray wastewater in the heat exchanger is converged with a wastewater discharge pipe of the desulfurizing tower and discharged to a drainage system.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be limited to the following claims.
Claims (6)
1. A system for generating power by utilizing ship desulfurization pre-cooling water waste heat is arranged based on a pre-cooling spray system (4), wherein the pre-cooling spray system (4) is positioned in an air inlet throat at one side of a desulfurizing tower (12), and is characterized in that the power generation system comprises an evaporator (3), an expansion generator (2) and a working medium pump (10);
The evaporator (3) is communicated with a working medium pump (10), the working medium pump (10) is communicated with a liquid storage tank (11), and liquid working medium in the liquid storage tank (11) is pumped by the working medium pump (10) and pumped into the evaporator (3) to exchange heat with the pre-cooling spray wastewater;
The liquid working medium absorbs heat and then turns into gaseous working medium, the evaporator (3) is communicated with the expansion generator (2) at the outlet of the gaseous working medium, and the gaseous working medium drives the expansion generator (2) in the expansion generator (2) to generate electricity;
The back end of the expansion generator (2) is communicated with a condenser (1), the condenser (1) is communicated with a sea water pump (8), and the condenser (1) is also communicated with a liquid storage tank (11), sea water pumped by the sea water pump (8) provides a cold source for the condenser, a working medium condensed into a liquid phase enters the liquid storage tank (11) and is pumped again by a working medium pump (10) for the next cycle;
The evaporator (3) is communicated with a heat exchanger (9) at a water outlet of the pre-cooling spray wastewater, and the seawater pump (8) is communicated with the pre-cooling spray system (4) through the heat exchanger (9);
the water supply path of the seawater pump (8) is divided into three paths, one path is communicated with the spraying system (7), the other path is communicated with the pre-cooling spraying system (4) through the heat exchanger (9), and the other path is communicated with the condenser (1).
2. The system for generating power by utilizing the waste heat of ship desulfurization pre-cooling water according to claim 1, wherein a desulfurizing tower exhaust port (6) is arranged at the top of the desulfurizing tower (12), and a desulfurizing tower air inlet (5) is arranged at the top of the air inlet throat.
3. A power generation method of a system for generating power by utilizing ship desulfurization pre-cooling water waste heat is characterized in that pre-cooling spray waste water containing waste heat is discharged from the lower end of an air inlet throat where an air inlet (5) of a desulfurizing tower is positioned and flows into an evaporator (3), meanwhile, a working medium pump (10) pumps liquid organic working medium in a liquid storage tank (11) and pumps the liquid organic working medium into the evaporator (3), high-temperature pre-cooling spray waste water exchanges heat with low-temperature liquid organic working medium in the evaporator (3), wherein the liquid organic working medium absorbs heat to be gaseous organic working medium, and the pre-cooling spray waste water absorbs a large amount of heat and reduces the temperature;
The gaseous organic working medium enters the expansion generator (2) to convert the pressure energy and the heat energy of the gaseous organic working medium into mechanical energy, and then the expansion machine of the expansion generator (2) is driven to drag the generator to convert the mechanical energy into electric energy.
4. The power generation method of the system for generating power by utilizing the waste heat of the ship desulfurization pre-cooling water is characterized in that the temperature and the pressure of gaseous organic working media are reduced after working in an expansion generator (2), the gaseous organic working media are in a gas-liquid two-phase state and enter a condenser (1) to exchange heat with seawater supplied by a seawater pump (8), the organic working media in the gas-liquid two-phase state are completely condensed into a liquid phase, the liquid phase enters a liquid storage tank (11), and the liquid working media are pumped again by a working media pump (10) for use, so that the condensed liquid working media can be recycled.
5. The power generation method of the system for generating power by utilizing the waste heat of the ship desulfurization pre-cooling water, which is disclosed in claim 4, is characterized in that the pre-cooling spray waste water still containing the waste heat enters a heat exchanger (9) to exchange heat with seawater supplied by a seawater pump (8), and the water in the seawater pump (8) is preheated and then used for the operation of the pre-cooling spray system (4).
6. The power generation method of the system for generating power by utilizing the waste heat of the ship desulfurization pre-cooling water, which is characterized in that the waste heat of the pre-cooling spray waste water is obtained by absorbing the heat of high-temperature waste gas generated by a ship host in the primary cooling process of the pre-cooling spray system (4).
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| CN202111135380.6A CN113818940B (en) | 2021-09-27 | 2021-09-27 | A system and method for generating electricity using waste heat from ship desulfurization pre-cooling water |
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| CN202111135380.6A CN113818940B (en) | 2021-09-27 | 2021-09-27 | A system and method for generating electricity using waste heat from ship desulfurization pre-cooling water |
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| CN216477509U (en) * | 2021-09-27 | 2022-05-10 | 山东佩森环保科技有限公司 | System for generating power by using waste heat of ship desulfurization pre-cooling water |
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| JP2011106302A (en) * | 2009-11-13 | 2011-06-02 | Mitsubishi Heavy Ind Ltd | Engine waste heat recovery power-generating turbo system and reciprocating engine system including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211753959U (en) * | 2020-02-27 | 2020-10-27 | 山东船舶技术研究有限公司 | Outer U type desulfurizing tower |
| CN111744333A (en) * | 2020-07-15 | 2020-10-09 | 昊姆（上海）节能科技有限公司 | Self-balancing system for high-temperature flue gas desulfurization, dust removal and waste heat recovery |
| CN216477509U (en) * | 2021-09-27 | 2022-05-10 | 山东佩森环保科技有限公司 | System for generating power by using waste heat of ship desulfurization pre-cooling water |
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