Biomass-based electric heating gas-fertilizer poly-generation comprehensive energy system

Abstract

The invention discloses a biomass-based electric heating gas-fertilizer poly-generation comprehensive energy system. Biomass is combusted through a biomass boiler to generate high-temperature and high-pressure steam, most of the steam directly generates power, steam is extracted to heat and preserve heat of a biogas digester, ash generated through boiler combustion is used for adjusting a PH value of the biogas digester, and through adjustment of the temperature and the PH value of the biogas digester, the biogas production efficiency of the biogas digester is ensured; and ash generated by combustion of the boiler and biogas slurry and biogas residues of the biogas digester can further be used for production of organic chemical fertilizers. Therefore, through the system, the problem of efficient gas production of the biogas digester is solved, comprehensive utilization of biogas residues and ash residues and full utilization of heat of the biomass boiler are realized, electricity, heat, gas and fertilizer are produced through biomass, comprehensive utilization of energy is realized, and carbon peak reaching and carbon neutralization are effectively promoted.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of biomass in rural areas, and in particular relates to a biomass-based comprehensive energy system for polygeneration of electric heating, gas and fertilizer. Background technique [0002] Biomass energy refers to the energy converted from biomass and other organic matter generated by green plants through photosynthesis, which can be directly used as fuel or converted into an energy carrier for gaseous or liquid fuel. my country has abundant biomass resources and has inherent advantages in the development and utilization of biomass energy. Biomass energy resources in rural areas mainly refer to lignocellulose such as straw and trees other than grain and fruit in the process of agricultural and forestry production, leftovers from the agricultural product processing industry, agricultural and forestry waste, and poultry manure and waste in the process of animal husbandry production. and ot...

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Problems solved by technology

[0004] The present invention aims at the problems of ash and slag output, waste heat utilization, and winter fermentation in the existing biomass utilization technology, and provides a comprehensive energy system based on biomass-based electric heating, gas and fertilizer polygeneration. Through the comprehensive supply of various energy sources, it ensures The biogas digester can maintain a relatively stable temperature no matter what the weather conditions are, which not only saves energy, but also improves the efficiency of gas production

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