Electrothermal storage type method and system for co-production of pyrolysis oil, gas and carbon from waste polymer materials

Abstract

The application discloses a kind of electric heat storage type abandoned polymer material pyrolysis oil gas carbon co-production method and system, belong to energy storage and solid waste resource field.Method will be after pre-treatment abandoned polymer material pyrolysis under anaerobic 300~700 ℃, generate pyrolysis carbon and high-temperature oil gas containing heavy tar;Oil gas is after pyrolysis oil by dust removal, condensation separation, pyrolysis gas is preheated by high-temperature oil gas, high-temperature hydrogen-rich pyrolysis gas is heated once, secondary heating of heat storage medium, synchronous completion residual tar cracking and low-carbon hydrocarbon steam reforming, generate high-temperature hydrogen-rich pyrolysis gas, part as circulating carrier gas for pyrolysis energy supply, the rest as product gas output.System includes pyrolysis unit, dust removal unit, pyrolysis oil collection unit, electric heat storage unit and circulating fan, electric heat storage unit with grid valley electricity or green electricity heating heat storage medium realizes energy storage and release.The application gets rid of fossil fuel dependence, absorbs surplus power, eliminates pipeline blockage, realizes abandoned polymer material full component high-value co-production, and has environmental protection and economic benefits.

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