Dedusting and denitration integrated functional filter material and preparation method thereof

Abstract

The invention discloses a dedusting and denitration integrated functional filter material which comprises a dust facing layer, a buffer layer, a catalytic decomposition layer, a base cloth layer and a support layer, wherein the dust facing layer is prepared by blending polytetrafluoroethylene fiber and polyimide fiber; the buffer layer is prepared by blending polytetrafluoroethylene fiber and polyimide fiber; the catalytic decomposition layer is prepared from a polytetrafluoroethylene film containing a V2O5-WO3 / TiO2 denitration catalyst; the base cloth layer is prepared from polytetrafluoroethylene fiber; the support layer is prepared from polytetrafluoroethylene fiber; the base cloth layer is located on the support layer; the catalytic decomposition layer is located on the base cloth layer; the buffer layer is located on the catalytic decomposition layer; the dust facing layer is located on the buffer layer; the dust facing layer, the buffer layer and the catalytic decomposition layer are hooked on the base cloth layer through a needle punching method; and the support layer is arranged below the base cloth layer through a needle punching method. The dedusting and denitration integrated functional filter material disclosed by the invention has the advantages that high-temperature dedusting and denitration can be realized, and the denitration efficiency can be improved. The invention also discloses a preparation method of the filter material.

Description

technical field [0001] The invention relates to a filter material and a preparation method thereof, in particular to a dust removal and denitrification integrated functional filter material and a preparation method thereof. Background technique [0002] On July 29, 2011, the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China released the latest "Emission Standards of Air Pollutants for Thermal Power Plants". The "Standard" stipulates that nitrogen oxides: [0003] Since January 1, 2012, the 100 mg / m 3 from July 1, 2014, the existing thermal power boilers and gas turbine units implement 100 mg / m 3 The nitrogen oxide limit of the country; thermal power boilers and gas turbine units in key areas implement 100 mg / m 3 The nitrogen oxide limit; [0004] The pollutants produced in the flue gas of coal-fired power plants include sulfur oxides, nitrogen oxides, dust and other harm...

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Problems solved by technology

[0006] In order to overcome the problems existing in the existing filter material, the object of the present invention is to provide a functional filter material integrated with dust removal and denitrification and its preparation method

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