Low-low-temperature coal economizer system for high-sulfur coal unit
A low-low temperature economizer, high-sulfur coal technology, applied in indirect heat exchangers, feed water heaters, heat exchanger types, etc., can solve the problem of not achieving low-low temperature economizer effects, removal rates and energy-saving benefits It is easy to cause problems such as ash blocking and corrosion, etc., to achieve the effect of improving SO3 removal rate, reducing coal consumption for power generation, and reducing risks.
Pending Publication Date: 2019-11-22
XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD +1
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Problems solved by technology
[0004] The application of traditional low and low temperature economizer technology to high-sulfur coal units is prone to ash plugging and corrosion, which leads to the failure of normal operation of the unit. 3 The removal rate and energy-saving benefits will be greatly reduced, and the effect of the low-temperature economizer will not be achieved
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[0026] The present invention is described in further detail below in conjunction with accompanying drawing:
[0027] refer to figure 1 , the low-low temperature economizer system for high-sulfur coal units according to the present invention includes a boiler 1, an air preheater 2, a low-low temperature economizer 3, a flue gas treatment system, a flue gas reheater 7, and a chimney 8 , heater 9 and condensate heater 12; the flue gas outlet of boiler 1 is connected with the flue gas inlet of air preheater 2, and the flue gas outlet of air preheater 2 is connected with the flue gas of low-low temperature economizer 3 The side inlets are connected, the flue gas side outlet of the low-low temperature economizer 3 is connected with the inlet of the flue gas treatment system, the outlet of the flue gas treatment system is connected with the heat-absorbing side inlet of the flue gas reheater 7, and the flue gas is reheated The heat-absorbing side outlet of the heater 7 is connected w...
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The invention discloses a low-low-temperature coal economizer system for a high-sulfur coal unit. a flue gas outlet of a boiler is connected with a flue gas inlet of an air preheater, a flue gas outlet of the air preheater is connected with a flue gas side inlet of a low-low-temperature coal economizer, a flue gas side outlet of the low-low-temperature coal economizer is connected with an inlet ofa flue gas treatment system, an outlet of the flue gas treatment system is connected with an inlet of a heat absorption side of a flue gas reheater, and a heat absorption side outlet the of flue gasreheater is connected with a chimney; and a water inlet of the low-low-temperature coal economizer is connected with a water outlet of an air heater and a circulating water outlet of a condensed waterheater, a water outlet of the low-low-temperature coal economizer is connected with a water inlet of the air heater and a heat release side inlet of the flue gas reheater, a heat release side outletof the flue gas reheater is connected with a circulating water inlet of the condensation water heater, an air outlet of the air heater is connected with an air inlet of the air preheater. The system has relatively high SO3 removal rate and energy-saving benefit.
Description
technical field [0001] The invention belongs to the technical field of generating sets, and relates to a low-temperature economizer system for high-sulfur coal generating sets. Background technique [0002] The energy-saving and environmental protection industry is one of the seven strategic emerging industries that my country is vigorously cultivating and developing at the present stage. The flue gas waste heat utilization technology with flue gas deep cooling as the core is one of the main technologies for energy conservation and environmental protection on the boiler side of thermal power generation units. The low and low temperature economizer arranged in front of the electrostatic precipitator can reduce the coal consumption of the unit, cooperate with the low and low temperature dust collector to improve the dust removal efficiency and remove SO 3 and various metal pollutants; various forms of hot water heaters can greatly increase the inlet air temperature and outlet ...
Claims
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IPC IPC(8): F22D1/00F23L15/02F23J15/08B03C3/011B03C3/014F28D7/08F23J15/02F23J15/06
CPCF22D1/00F23L15/02F23J15/08B03C3/011B03C3/014F28D7/082F23J15/02F23J15/06Y02E20/34
Inventor 张知翔徐党旗邹小刚车宏伟李楠薛宁李文锋
Owner XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD