Electrostatic precipitation technology with flue gas heat exchange system configured
A flue gas heat exchange and electrostatic dust removal technology, which is applied in the field of electrostatic dust removal, can solve the problems of the emission concentration of flue gas and dust not meeting the emission standards, and the temperature of boiler exhaust gas is higher than the design value. Compact and easy to operate and maintain
Inactive Publication Date: 2014-04-30
BEIJING LONDIAN HONGTAI ENVIRONMENTAL TECH
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Problems solved by technology
[0003] Most coal-fired units in my country are equipped with electrostatic precipitators. In the actual operation process, on the one hand, there is a large deviation between the type of coal used and the type of coal designed; The large increase will cause the concentration of flue gas and dust emissions to fail to meet the increasingly stringent national emission standards
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[0015] exist figure 1 Along the flue gas flow direction, the flue gas heat exchange system and the electrostatic precipitator are installed in sequence after the boiler air preheater. The flue gas heat exchange system is equipped with a regulating valve and a frequency conversion booster pump on the condensate water inlet pipeline of the turbine.
[0016] When the present invention is in the working state, after the boiler flue gas enters the boiler air preheater (1), the flue gas with a temperature of about 150°C then enters the flue gas heat exchange system (2) of the present invention. After heat exchange, the flue gas The air temperature drops to a low and low temperature state of about 100°C. When the flue gas is in a low-temperature state, the volume flow rate of the flue gas decreases and the specific resistance of the dust increases, thereby improving the dust removal efficiency of the electrostatic precipitator (3) and reducing the emission concentration of the flue g...
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The invention relates to an electrostatic precipitation technology with a flue gas heat exchange system configured, and the electrostatic precipitation technology achieves not only emission reduction of contaminants, but also high efficiency and energy saving. The flue gas heat exchange system and an electrostatic dedusting device are sequentially arranged behind a boiler air pre-heater in the flue gas flowing direction, and the flue gas heat exchange system is provided with an adjusting valve and a frequency conversion booster pump. The efficiency of an electrostatic dust collector is improved, the emission concentration of flue gas and dust is reduced, the waste heat of flue gas is fully utilized, the energy saving is achieved, the running cost is low, adjustment, overhaul and operating maintenance are convenient, and the electrostatic precipitation technology is applicable to dust purification of coal-fired flue gas.
Description
technical field [0001] The invention relates to an electrostatic dust removal technology, in particular to an electrostatic dust removal technology equipped with a flue gas heat exchange system, which not only realizes pollutant emission reduction, but also has high efficiency and energy saving. Background technique [0002] At present, the society and the public's pursuit of environmental quality has become a real need of life. Most countries in the world, including my country, are constantly revising and improving pollutant discharge standards in order to achieve sustainable environmental development goals. [0003] Most coal-fired units in my country are equipped with electrostatic precipitators. In the actual operation process, on the one hand, there is a large deviation between the type of coal used and the type of coal designed; The large increase will cause the emission concentration of flue gas and dust to fail to meet the increasingly stringent emission standards of ...
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IPC IPC(8): F23J15/02F22D1/36
Inventor 刘惠勇李圣良么世杰徐杰英项光明赵江翔李丽
Owner BEIJING LONDIAN HONGTAI ENVIRONMENTAL TECH