Low temperature flue gas waste heat power generation system in waste incineration power plant
A low-temperature flue gas and waste heat power generation technology, applied in the direction of incinerators, combustion methods, combustion types, etc., can solve the problems of large power consumption and large power consumption, and achieve the effect of strong energy conversion ability
Active Publication Date: 2016-03-09
SHANGHAI TECHSPRAY ENG
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Problems solved by technology
The supporting process equipment of the incineration power generation system needs to consume a large part of electricity, and the water supply system, pumps and fans, flue gas treatment, wastewater treatment equipment, etc. all need a lot of power consumption
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[0018] The waste-to-energy plant has 4 production lines equipped with 2 sets of 20MW turbogenerator sets. The flue gas volume of each production line is 100,000 Nm3 / h. After the flue gas is dedusted, desulfurized and denitrified, the exhaust gas temperature is 170°C and contains 50mg / h of sulfur dioxide. Nm, moisture content 17.38%;
[0019] Flue gas input data
[0020]
[0021] The acid dew point calculated according to the flue gas parameters is 105°C. In order to ensure that the flue and chimney do not cause acid corrosion, the design consideration for the flue gas discharge temperature is not lower than 120°C. The temperature range of the waste heat utilized by the low-temperature flue gas waste heat ORC power generation system is between 170°C and 120°C.
[0022] The 4 waste incineration lines of this system are equipped with 2 sets of low-temperature flue gas waste heat ORC power generation systems, which can generate a net power generation of 703.2kW, which is incor...
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The invention discloses a waste incineration power plant low temperature flue gas waste heat power generating system in the field of waste incineration power generating. The system comprises a flue gas heat exchanging system, an organic Rankine cycle power generating system and a cooling system and is characterized in that the flue gas heat exchanging system comprises a flue gas hot water heat exchanger and an overheated water pump, the organic Rankine cycle power generating system comprises an organic working medium evaporator, an organic working medium steam turbine, a recycler and a cooler, and the cooling system comprises a condenser and a cooling water circulating pump. Flue gas of a boiler enters the flue gas hot water heat exchanger through a draught fan, the heat exchange is performed between the flue gas of the boiler and circulating water, the heated circulating water enters the organic working medium evaporator through the overheated water pump, the hot circulating water heats organic working medium, the organic working medium is evaporated and gasified, the organic working medium steam pushes the steam turbine to work, the organic working medium steam turbine is connected with a turbine generator to operate and generate the power, and the condenser of the cooling system cools and liquefies the organic working medium. The system has the advantages of being energy-saving, environment-friendly, zero in emission, high in conversion efficiency, advanced and reasonable in equipment and the like.
Description
technical field [0001] The invention relates to a low-temperature flue gas waste heat recovery and reuse device in the field of waste incineration power generation, and a low-temperature flue gas waste heat power generation system in a waste incineration power plant. Background technique [0002] Municipal solid waste has been treated by incineration for many years. With the development of cities and the strengthening of waste management, incineration technology and equipment have gradually developed. Incineration has become one of the main methods of urban waste treatment. The investment is relatively high, but volume reduction and harmlessness are relatively thorough. In addition to social benefits, considerable economic benefits can also be obtained from heat recovery for power generation. In recent years, a lot of work has been done to realize the localization of incineration equipment, which has important practical significance for reducing the initial investment and pr...
Claims
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IPC IPC(8): F01K25/10F01K27/00F23G5/46
CPCY02E20/12
Inventor 徐文辉付永强朱晔斐
Owner SHANGHAI TECHSPRAY ENG