High-temperature wastewater dust removal filter device with waste heat recovery function

Abstract

The invention provides a high-temperature wastewater dust removal filter device with a waste heat recovery function. The device used for removing dust in waste gas produced through combustion of a combustion furnace and guiding the waste gas into a denitration reaction tower for denitration. The device comprises at least two dust removal working chambers and a combustion fan. The dust removal working chambers are sequentially opened and closed according to preset rules. Each dust removal working chamber comprises an upper air through hole, a lower air through hole and a filter body, wherein the upper air through hole is made communicated with the denitration reaction tower, the lower air through hole is made communicated with the combustion furnace, and the filter body is arranged between the upper air through hole and the lower air through hole. The combustion fan is made communicated with the upper air through holes and injects combustion air into the combustion furnace according to a preset rule. The combustion air passes through the dust removal working chambers to bring heat of the dust removal working chambers to the combustion furnace. According to the high-temperature wastewater dust removal filter device with the waste heat recovery function, dust catching and knocking-down performance is excellent, and heat storage performance and waste water recovery performance are excellent.

Description

technical field [0001] The invention relates to the field of dust removal, in particular to a high-temperature waste gas dust removal and filtering device with waste heat recovery. Background technique [0002] At present, the selective catalytic reduction (SCR) method is usually used for denitrification in power stations and other industrial equipment. However, this method requires that the inlet temperature of the dedusted exhaust gas entering the denitrification reaction tower should be greater than 300 ° C. It is difficult for ordinary dust removal equipment to meet this requirement. , Therefore, the application and operation of denitrification equipment have brought certain restrictions and restrictions. [0003] At present, the maximum operating temperature of the high-temperature exhaust gas dust removal and filtering device does not exceed 260°C. In recent years, in order to purify the harmful components in the exhaust gas, use waste heat and recover valuable compone...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a high-temperature exhaust gas dust removal and filtration device with waste heat recovery, which is used to solve the problem that the temperature in the prior art cannot meet the requirements, and it is necessary to increase auxiliary heating equipment and increase equipment investment. problem of wasting energy

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