Porous carbon material and its preparation method

Abstract

The invention discloses a porous carbon material and its preparation method. The preparation method provided by the invention successively comprises steps of: raw material and auxiliary material selection, pulverization, spheroidization, grading, burdening, mixing, molding, roasting and the like. Green petroleum coke and green pitch coke are creatively used as raw materials. A filtration materialprepared after spheroidization of a green coke powder has large contractility, high strength, uniform pore distribution, smooth pore path, high filtration precision and good transmissivity, is not easy to block during the purification process, is easy to regenerate, and has long service life. The porous carbon material prepared in the invention can be widely used as a filtration material, a thermal insulation material, a conductance electrode and the like.

Description

Technical field

[0001] The invention relates to a new type of material, in particular to a porous carbon material and a preparation method thereof. Background technique

[0002] Currently, porous materials used to purify liquids and gases are mostly ceramic materials, metal and alloy materials, polymer materials and fiber materials. Some of these materials are resistant to corrosion but not high temperature, and some are resistant to high temperature but not corrosion resistant. In high-risk substances, heavy metals, precious metals, coal gasification, and environmental protection, a purification material that can withstand high temperature and corrosion, has good permeability, high filtration accuracy, and easy cleaning is required. Due to the chemical stability, high temperature resistance and corrosion resistance of carbon, the filtration requirements can be met by controlling the pore formation. However, the porous carbon filter material manufactured by the traditional meth...