Biomass Ash Resource Utilization Method

Abstract

The invention discloses a biomass ash resource utilization method which comprises the following steps: 1) pretreating biomass ash so as to obtain primary biomass ash; 2) soaking the primary biomass ash with an acid liquid so as to obtain first biomass ash; 3) melting and boiling the first biomass ash with an alkali liquid so as to obtain sodium silicate; 4) introducing a carbon dioxide gas into apart of the sodium silicate, neutralizing till the pH value of the solution is 9-11, further adding a flocculant according to a mass ratio of the flocculant to the solution of 1:(40-100), performing flocculation precipitation, filtering, and drying so as to obtain a solid sample; 5) roasting the solid sample so as to obtain nano silicon dioxide; 6) taking the rest sodium silicate and the nano silicon dioxide as a silicon source, and performing synthesis with an aluminum source, deionized water and crystal seeds, thereby obtaining a porous ZSM-5 molecular sieve. By adopting the method, the porous ZSM-5 molecular sieve of high quality is prepared, the waste residue treatment efficiency is improved, zero emission and zero pollution are achieved, and efficient utilization of biomass raw materials is achieved.

Description

technical field

[0001] The invention relates to solid waste resource utilization technology, in particular to a biomass ash resource utilization method. Background technique

[0002] Biomass is a green and renewable resource, and its efficient and clean utilization has always been a research hotspot. According to my country's biomass energy development plan, the total amount of biomass energy resources that can be used as biomass energy is about 460 million tons of standard coal per year, but the amount used is only 22 million tons of standard coal, and a large amount of biomass is discarded as waste or used as primary fuel , which wastes resources and pollutes the environment. At present, biomass energy is mainly used for heat supply, power generation and synthetic chemical industry. Biomass fast pyrolysis power generation and synthesis gas technology can convert abundant biomass resources into huge amounts of electrical energy and biological chemicals. However, after biom...

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