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Waste heat electricity-water cogeneration device and method for diesel power station in sea island

A technology for power stations and islands, which is applied to waste heat, electricity and water cogeneration devices and fields of island diesel power stations, which can solve the problems that people cannot live for a long time, and achieve the effect of reducing temperature and improving efficiency

Inactive Publication Date: 2015-01-14
辽宁中成永续水工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are 6,536 islands in China with an area of ​​more than 500 square meters, and currently there are only 450 inhabited islands. Most of the islands are unable to live on the islands for a long time due to lack of water and electricity.

Method used

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  • Waste heat electricity-water cogeneration device and method for diesel power station in sea island
  • Waste heat electricity-water cogeneration device and method for diesel power station in sea island

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Using an evaporative seawater desalinator

[0033] see figure 1 , The combined waste heat boiler 1 is installed on the exhaust channel 2 of the internal combustion engine of the island diesel power station, divided into two parts, a high temperature section and a low temperature section. The temperature of the high temperature section reaches 400-450 o C, low temperature section temperature 200-250 o C. The working medium evaporator 21 of the ORC power generation system is set on the high temperature section, and the steam generator 22 is set on the low temperature section. The working fluid evaporator obtains heat from the exhaust gas of the internal combustion engine, adjusts the working fluid booster pump 6 to evaporate the organic working fluid to a critical or supercritical state, and sends it to the turbo expander 23 to perform work, which drives the coaxial generator 5 to send out electricity. The exhaust gas of the organic working medium discharged from ...

Embodiment 2

[0036] Example 2: Using reverse osmosis membrane type seawater desalinator

[0037] see figure 2 , The combined waste heat boiler 1 is installed on the exhaust channel 2 of the internal combustion engine of the island diesel power station, divided into two parts, a high temperature section and a low temperature section. The temperature of the high temperature section reaches 400-450 o C, low temperature section temperature 200-250 o C, an evaporator 22 is provided on the low temperature section. A superheater 21 is provided on the high temperature section. The organic working fluid is pressurized and sent to the evaporator 22 by the working fluid booster pump 6, and then sent to the superheater 21 after evaporation, reaching a critical or supercritical state, and sent to the turbo expander 23 to perform work, which drives the coaxial generator 5 to send out electricity. The exhaust gas of the organic working medium discharged from the turboexpander 23 is sent to the working me...

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Abstract

The invention relates to a waste heat electricity-water cogeneration device and method for a diesel generating station in a sea island. The waste heat electricity-water cogeneration device is characterized by comprising an ORC (organic Rankine cycle) power generation system and a sea water desalination system which are matched with each other, wherein the seawater desalination system heats seawater entering a seawater desalinator by a large amount of heat energy emitted during a working medium condensation process of a working medium condenser of the ORC power generation system, so that the seawater desalination efficiency is improved; the ORC power generation system adopts a large amount of seawater provided by the seawater desalination system as a refrigerant, so that the temperature of the working medium condenser is effectively reduced, and the ORC generation efficiency is improved; the two systems are matched with each other and coordinated, so that electricity and water cogeneration is realized; and a combined waste heat boiler is arranged on an internal combustion engine exhaust passage of the power station in the sea island, fresh water entering an evaporator passes an internal combustion engine cooling-water heat exchanger and is heated by internal combustion engine cooling water, thus, waste heat recovery of internal combustion engine cooling water is realized, and the steam yield is increased. According to the waste heat electricity-water cogeneration device and method for the diesel generating station in the sea island, power and steam energy are not required to be provided externally, the fresh water yield can reach 500t / d, and 2,000 KWh / d power can be provided for the outside.

Description

Technical field [0001] The present invention relates to a technology for recovering diesel generator exhaust and cooling water waste heat by using organic Rankine cycle (ORC) low-temperature power generation technology, desalinating seawater without consuming other energy, and having surplus power output, especially A cogeneration device and method for waste heat, electricity and water in an island diesel power station. Background technique [0002] There are 6,536 islands with an area of ​​more than 500 square meters in China, and only 450 islands are currently inhabited. Most of the islands are unable to live on the islands for a long time because of lack of water and electricity. The development of islands, especially the development of the South China Sea Islands, the first thing to be solved is electricity and fresh water. At present, the electricity developed in the offshore islands is mainly supplied by diesel generators, and the fresh water is mainly solved by ship trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/04C02F1/16C02F1/44F01D15/10F22B33/18C02F103/08
CPCY02A20/124Y02A20/131
Inventor 邹锦元沈铁方李雨桐程名扬
Owner 辽宁中成永续水工科技有限公司
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