A method for safe and efficient operation of low-temperature electrostatic precipitators based on coal combustion characteristics

Abstract

The invention discloses a safe and high-efficiency operation method for low-temperature electric dust removal based on coal-fired characteristics, and belongs to the technical field of thermal power generation. The low and low temperature technology of the existing technology has different adaptability to different coal types, and there is a possibility that the risk of low temperature corrosion will be aggravated by the decrease of flue gas temperature, and there is a lack of an operable quantitative risk assessment method and an operable means to reduce related risks. Ensure the safe operation of the electrostatic precipitator. Based on the coal quality analysis parameters of coal-fired power plants, the present invention calculates the low-temperature corrosion risk factors related to the operation of low-low temperature dust collectors according to the specific coal types used, and provides the method of effectively improving the operation safety of high-risk factor coal types by using coal blending technology Solutions to increase the safety and reliability of long-term equipment operation. At the same time, the invention also proposes the optimal operating temperature range of the low-temperature dust collector based on the "acid dew point calculation" and "submicron particle control mechanism", which can achieve the environmental protection effect of more efficient removal of full-size particles.

Description

technical field [0001] The invention relates to a safe and high-efficiency operation method for low-temperature electric dust removal based on coal-fired characteristics, and belongs to the technical field of thermal power generation. Background technique [0002] As the problem of environmental pollution has become increasingly prominent, the state has put forward higher requirements for the emission indicators of major pollutants of thermal power units. The existing conventional dry electrostatic precipitator has poor adaptability to the new environmental protection standards, especially the ultra-low emission standard (smoke concentration of 5 mg / Nm3), and it is necessary to improve the performance of new technologies such as low-temperature electrostatic precipitator technology. [0003] Low and low temperature electrostatic precipitator technology can expand the scope of application of traditional dry electrostatic precipitators to meet the requirements of the latest en...

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Problems solved by technology

[0007] Aiming at the defects of the prior art, the purpose of the present invention is to provide a risk assessment of coal quality adaptability of low-temperature electrostatic precipitator, avoiding the problem of increased low-temperature corrosion risk that may be caused by burning different coal types, and combining coal blending technology to reduce Possibility of low-temperature corrosion; Solve the problem that the operation of low-temperature dust removal equipment has a fixed smoke temperature, which cannot be optimized and adjusted to match the characteristics of the type of coal used; the calculation method of the best operating smoke temperature based on the acid dew point calculation method and the submicron particle control mechanism, A safe and efficient operation method for low and low temperature electrostatic precipitators based on coal combustion characteristics to obtain the optimal inlet flue gas temperature value, guide the operation of low and low temperature dust collectors, and realize the improvement of dust removal effect

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