Biomass gas production system and process based on microwave heating

Abstract

The invention discloses a biomass gas making system and a biomass gas making technology based on microwave heating. The biomass gas making system comprises a microwave gasifier, a heat exchanger, a cleaning and dedusting device and a gas accumulation device, wherein the microwave gasifier, the heat exchanger, the cleaning and dedusting device and the gas accumulation device are sequentially connected; the heat exchanger is used for carrying out heat exchange with gas generated by the microwave gasifier; air and water enter the heat exchanger from one end of the heat exchanger and can be input into the microwave gasifier through the other end of the heat exchanger after being subjected to the heat exchange with the gas generated by the microwave gasifier; a residue outlet of the cleaning and dedusting device is connected with the microwave gasifier. The biomass gas making system disclosed by the invention has the beneficial effects that a biomass gasifying conversion process can be strengthened by utilizing the combined action of heat of materials per se and microwave auxiliary heating, the temperature needed for splitting and gasifying of plant materials can be rapidly reached, the gas production rate is high, and efficient and clean energy conversion on biomass type waste resources can be realized; sensible heat and waste heat which are generated during a gas making process can be fully utilized, the heat utilization rate is high, and the energy source is saved; automatic feeding and automatic discharging can be realized by the whole gas making device, the automation degree is high, and the safety is high.

Description

technical field [0001] The invention relates to biomass materials, in particular to a biomass gas production system and process based on microwave heating. Background technique [0002] my country is rich in biomass resources, such as crop stalks, forestry branches, industrial medicine residues, etc. In recent years, attention has been paid to the energy conversion and utilization of low calorific value fuels. With the strengthening of human awareness of environmental protection, while paying attention to waste utilization, energy conversion technologies with higher efficiency and less pollution are gradually being adopted by industrial production. [0003] Conventional biomass fixed-bed gasification technology is limited by process conditions, and there are mainly problems such as low gasification reaction temperature, low carbon conversion rate, high tar content, and low-quality syngas utilization. The current microwave plasma gasification equipment cannot completely heat...

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Problems solved by technology

[0003] Conventional biomass fixed-bed gasification technology is limited by process conditions, and there are mainly problems such as low gasification reaction temperature, low carbon conversion rate, high tar content, and low quality of syngas utilization.

The current microwave plasma gasification equipment cannot completely heat the biomass raw materials, or requires a large heating power to achieve a good heating effect, so the heating efficiency is low, the power consumption is large, and the operating cost is high. The defect of wasting energy seriously restricts the energy and chemical industry utilization of biomass resources

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