Continuous carbonizing treatment process for biomass

Abstract

The invention discloses a continuous carbonizing treatment process for biomass. Biochar is obtained by carbonizing a biomass raw material; biomass gas which is produced in a carbonizing process is subjected to gas-solid separation at first in a settling chamber and a dust collector, is sprayed in a spraying tower and is separated and purified in a gas-liquid separating tower, so that wood vinegarand tar are separated; part of the purified and separated biomass gas serves as rotary furnace fuel, and surplus biomass gas is supplied to production of soil conditioner carbon fertilizer or domesticfuel. The continuous carbonizing treatment process improves comprehensive utilization of crops and the like, and achieves an important effect on protecting the environment of a producing place, stabilizing agricultural ecological balance, alleviating resource constraints, and promoting income of farmers.

Description

technical field [0001] The invention relates to a biomass continuous carbonization treatment process, belonging to the technical field of biomass carbonization and its energy utilization. Background technique [0002] Biomass pyrolysis and carbonization technology is a very promising biomass energy utilization technology. After pyrolysis, two types of products, gas and solid, will be obtained. After the solid product is cooled, biochar will be obtained, and the gaseous product will be purified after cooling. Biomass gas, wood tar and wood vinegar are separated to obtain biomass gas, wood tar, and wood vinegar. It decomposes biomass into biomass charcoal, pyrolysis gas, tar, wood vinegar and other products through pyrolysis technology. [0003] Currently developed and utilized earth-injected carbonization furnaces, pool-type carbonization furnaces, etc., generally have defects such as poor adaptability of raw materials, high energy consumption, long carbonization time, low ca...

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Problems solved by technology

[0004] CN102226092A discloses a continuous biomass low-temperature pyrolysis carbonization method and its carbonization furnace, but the method requires supplementary fuel, and in addition pyrolysis gas and tar are collected in stages, without purification treatment measures, it is easy to block

And wood vinegar and wood tar are mixed together, wasting resources

[0005] CN101353596A discloses a fluidized bed biomass charcoal, gas, and oil co-production system, but the method adopts air fluidized biomass, and the biomass will react with oxygen in the air at high temperature to generate carbon dioxide, resulting in waste of resources, and the air When used for fluidization, part of the heat will be taken away, and the biomass oil will be oxidized. After being separated by the cyclone, it will directly enter the cooling tower, which will cause the biomass oil and dust to bond and block the pipeline.

[0008] CN103627415A discloses that the biomass pyrolysis carbonization furnace enters the oil-gas separation device after pyrolysis, the separated liquid phase is separated from oil and water, and wood vinegar liquid and wood tar are separated, and the gas phase enters the gas storage tank for the carbonization furnace, and the gas has no further purification measures. The gas will carry wood tar and fine toner solid particles, which will stick together to block the pipeline, and the tar is also easy to coke at the nozzle

[0009] CN101955780A discloses a biochar, gas, oil and wood vinegar co-production system and co-production method, which can only be produced intermittently

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