Method for cooling biomass gasification gas and recovering waste heat by using heat exchanger

Abstract

The invention relates to a method for cooling biomass gasification gas and recovering waste heat by using a heat exchanger, which solves the problem on high-efficiency heat exchange / cooling and waste heat recovery of tar-enriched biomass gasification gas.

Description

technical field [0001] The invention relates to a method for cooling biomass gasification gas and recovering waste heat by using a heat exchanger. Background technique [0002] At present, energy shortage, environmental pollution and greenhouse effect make the development of renewable energy the only way for human sustainable development. Among many renewable energy sources, biomass absorbs and burns CO2 equivalently, and is the only renewable carbon source, known as a neutral fuel with zero CO2 emissions. Especially compared with other renewable energy sources, although solar energy and wind energy can provide energy, they do not have material production capacity, and cannot form a huge chemical industry like coal and petroleum to produce thousands of products. The main component of biomass is carbohydrates. It is not only a high-quality renewable energy source, but also a chemical raw material. Especially when fossil energy is exhausted, biomass will become the most impor...

AI Technical Summary

Problems solved by technology

For example, the main difficulty of the thermal cracking method is that the tar decomposition efficiency is too low, the required high temperature is difficult to achieve, and the economy is poor, etc.

At present, there are at least two major problems in the catalytic cracking method: the problem of secondary heating of gas and the problem of catalyst.

[0011] According to Table 1-1, it can be seen that various existing tar purification methods have various problems such as low efficiency, high energy consumption, waste of heat energy, and secondary pollution to varying degrees.

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