Wood tar fine purification device and its purification method

Abstract

The invention relates to a fine wood tar purification device and a purification method thereof. The fine wood tar purification device sequentially comprises a wood tar input part I, a crude phenol distillation extraction part II, a rectification purification part III and a moisture filtering part IV, wherein the wood tar input part I is used for sucking wood tar and used for conveying the wood tarto a distillation reaction kettle of the crude phenol distillation extraction part II; the crude phenol distillation extraction part II is used for distilling the wood tar at different sections, andused for performing condensation to collect fractions at different sections to obtain crude phenol; the rectification purification part III is used for performing rectification purification to obtaina light component product; the moisture filtering part IV is used for performing multi-layer filtering purification on vapor discharged from the crude phenol distillation extraction part II and residue moisture after condensation. The device is capable of separating and purifying phenol compounds such as 2,6-dimethyl oxo phenol and guaiacol from wood tar as a biomass pyrolysis byproduct and has the advantages of being economic and efficient, free of secondary pollution, high in purification compound concentration, and the like.

Description

technical field [0001] The invention relates to the technical field of biomass environmental protection application, in particular to a wood tar fine purification device and a purification method thereof. Background technique [0002] Biomass pyrolysis gasification refers to the process of converting organic matter into combustible gas at high temperature using a small amount of air or oxygen as gasification agent. Wood tar is an additional product in the process of biomass pyrolysis and gasification, especially wood tar in gas can block, pollute and corrode gas pipelines, gas cookers, etc., greatly shortening the service life of equipment and affecting the normal operation of the gasification system. limit. At the same time, any disposal or stacking of biomass wood tar will have a great impact on the environment, especially the atmosphere and water environment, and will also cause a waste of resources. It can be seen that the effective treatment and utilization of wood ta...

AI Technical Summary

Problems solved by technology

The invention can separate and purify 2,6-dimethyloxyphenol, guaiacol and other phenolic compounds from wood tar, which is a by-product of biomass pyrolysis, and has the advantages of economical efficiency, no secondary pollution, and high concentration of purified compounds. , solves the problem that the existing wood tar purification devices on the market often cause secondary pollution during actual use, and the treatment of wastewater is very complicated and will also increase the cost. It is suitable for application in industrial production

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