Treatment method of phenol-containing wastewater from power generation from rice husk pyrolysis

Abstract

The invention provides a treatment method of phenol-containing wastewater from power generation from rice husk pyrolysis, and belongs to the field of biomass energy chemical industry. The treatment method of the phenol-containing wastewater from power generation from rice husk pyrolysis comprises the following steps of (1) conducting rice husk pyrolysis to produce pyrolysis gas and pyrolysis carbon, subjecting the pyrolysis gas to spraying, washing and purifying to generate phenol-containing tar wastewater, and crushing the pyrolysis carbon through a crusher to produce 5-10-[mu]m silicon carbon black powder; (2) carrying out an acid-catalyzed reaction on the phenol-containing wastewater and formaldehyde to produce a biomass phenolic resin aqueous solution, and adding a cross-linking agentto promote polymerization of other tar; (3) modifying the silicon carbon black with resin; and (4) mixing modified silicon carbon black and rubber, conducting kneading and mixing through an internal mixer, and conducting extrusion and granulation to produce silicon carbon black / rubber master batch. By means of the proposed method, not only is the phenol-containing wastewater from power generationfrom rice husk pyrolysis treated, but also the silicon carbon black powder is modified, used as a reinforcing agent and applied into various rubber products, so that the proposed method is a rice huskresourceful and comprehensive utilization method with power generation by pyrolysis, production of the phenolic resin from the wastewater, modification of the silicon carbon black and production of the rubber master batch achieved.

Description

technical field [0001] The invention belongs to the field of biomass energy chemical industry, and in particular relates to a treatment method for phenol-containing waste water generated by pyrolysis of rice husk. Background technique [0002] Rice husk pyrolysis power generation has become a preferred project strongly supported by the national and local governments, and has been promoted and applied at home and abroad. However, a large amount of phenol-containing wastewater is produced during the pyrolysis gas purification process, and the phenol-containing wastewater volatilizes and spreads throughout the plant area, causing an unpleasant smell, endangering the health of employees and polluting the surrounding environment. Phenol-containing wastewater is a substance with extremely complex components, containing a large amount of phenolic substances, such as phenol, cresol, catechol guaiacol and pyrogallol, as well as a large number of other aromatics with unknown structure...

AI Technical Summary

Problems solved by technology

[0003] So far, the phenolic wastewater produced by biomass pyrolysis has not attracted the attention of relevant departments, and has become a potential threat to restrict the development of biomass pyrolysis power generation industry