Biomass power generation steam-water system having function of flue gas waste heat recovery
A biomass power generation and flue gas waste heat technology, which is applied in the directions of preheating, supplementary water supply, steam generation, etc., can solve the problems of low capacity and parameters of biomass generating sets, inability to fully utilize flue gas, and low energy efficiency of power plants. Enhanced anti-fouling and corrosion resistance, improved capacity and parameters, and improved energy efficiency
Inactive Publication Date: 2011-09-14
XIAN HUAXIN NEW ENERGY CO LTD
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Problems solved by technology
[0003] The present invention provides a steam-water system for biomass power generation with the function of recovering waste heat from flue gas, so as to overcome the problems in the prior art that the heat energy discharged from the flue gas cannot be fully utilized, the capacity and parameters of the biomass generating set are low, and the overall energy efficiency of the power plant is partial. low problem
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[0012] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0013] see figure 1 , the original steam and water system for biomass power generation includes biomass boiler 1, steam turbine 2, generator 3, condenser 4, condensate pump 5, steam seal heater 6, deaerator 7, deaeration water tank 8, electric feed water pump 9 , High pressure heater 10 and low pressure heater 11. The steam generated by the biomass boiler 1 is processed by the steam turbine 2 to form exhausted steam. After the exhausted steam is condensed in the condenser 4, it is pressurized by the condensate pump 5. After the pressurization, the condensed water first passes through the seal heater 6, and then passes through the low-pressure heater 11. After being heated, it is sent to the deaerator 7, and finally the electric feed water pump 9 is used to pressurize it, and after being heated by the high-pressure heater 10, it is sent back to the biomass boiler 1 f...
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The invention relates to a biomass power generation steam-water system having a function of flue gas waste heat recovery. At present, by adopting an original flue gas emission standard of a coal-fired boiler to process the temperature of emitted flue gas of the boiler, the heat energy discharged from the flue gas cannot be fully utilized, the capacity and parameters of a biomass generator set are relative low and the whole energy benefit of a power plant is on the low side. The biomass power generation steam-water system comprises a condensing type condensed water heater, wherein the condensing type condensed water heater comprises an outer shell; an exchange cavity and a dewatering cavity which are communicated from top to bottom are arranged in the outer shell; a flue gas outlet of a biomass boiler is communicated with the exchange cavity; an uprightly placed condensed water coiler is arranged in the exchange cavity; a condensed water outlet and a condensed water inlet which are placed up and down are arranged on the outer shell of the exchange cavity; a flue gas outlet and a flue gas condensed water outlet which are placed up and down are arranged on the outer shell of the dewatering cavity; a deaerator is connected to the condensed water outlet; and the condensed water inlet is connected to a vapor-sealing heater. The biomass power generation steam-water system can be used for discharging the flue gas condensed water in time, thereby enhancing the dust-proof resistance and decay resistance of the heater. The saved heat and steam are all used for generating electricity.
Description
technical field [0001] The invention relates to the technical field of waste heat recovery, in particular to a biomass power generation steam-water system with the function of flue gas waste heat recovery. Background technique [0002] At present, in domestic biomass direct combustion power generation projects, the main thermal system equipment used includes biomass boilers, steam turbines, generators, condensers, condensate pumps, steam seal heaters, deaerators, deaeration water tanks, electric feed water pumps, For high-pressure heaters and low-pressure heaters, the boiler exhaust gas temperature still adopts the exhaust gas standard of the original coal-fired boiler. Due to the low-temperature corrosion of the flue gas in the original coal-fired boiler, the temperature of the exhaust gas of the boiler is relatively high to avoid the problem of low-temperature corrosion of the flue gas. However, in practical application, it is found that biomass fuel has its own character...
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Login to View More IPC IPC(8): F22D11/06
Inventor 耿迺弟靳强王江涛贺钧李媛
Owner XIAN HUAXIN NEW ENERGY CO LTD