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Method for removing smoke by virtue of ultrasonic atomization technique

An ultrasonic and technical technology, which is applied in the field of smoke removal by ultrasonic atomization technology, can solve the problems of adhesive strength decrease and high-ratio replacement, and achieve the effect of improving bonding strength, product purity, and increasing bonding strength

Inactive Publication Date: 2019-03-26
JILIN XIONGFEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for removing smog by using ultrasonic atomization technology to solve the problems in the prior art that the ratio of lignin to phenol is increased, the bonding strength of the adhesive is reduced, and a high ratio of replacement cannot be achieved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1, preparation of xylose solution

[0044] 1. Mix the biomass with a sulfuric acid solution with a concentration of 2wt% according to a solid-to-liquid ratio of 1Kg:10L, heat and reflux for 2h to 4h, cool down and filter, and obtain a hydrolyzed solution and hydrolyzed slag with a xylose concentration of 6.5wt%;

[0045] ② adjust the concentration of sulfuric acid in the hydrolyzate in ① to be 2wt% with a sulfuric acid solution with a concentration of 3wt%, add biomass by solid-liquid ratio 1Kg:10L, heat and reflux for 3h, cool down and filter, and obtain xylose concentration of 10wt%. Hydrolyzate and hydrolyzed slag;

[0046] ③Adjust the sulfuric acid concentration in the hydrolyzate in ② with a sulfuric acid solution with a concentration of 3wt% to be 2wt%, add biomass according to the solid-to-liquid ratio of 1Kg:10L, heat and reflux for 2h to 4h, cool down and filter, and obtain the xylose concentration of the hydrolyzate 15.6wt% xylose solution and hydrolyzed...

Embodiment 2

[0050] ① Concentrate the hydrolyzed slag in Step 1 of Example 1, wash until neutral, mix it with a sodium hydroxide solution with a concentration of 5wt% at a solid-to-liquid ratio of 1Kg:8L, heat and reflux for 4 hours, drop to room temperature, filter, Obtain alkali lignin solution and crude cellulose;

[0051] ② Add the alkali lignin solution, phenol and alkali catalyst obtained in ① into the reaction device, raise the temperature to 80°C-100°C, and reflux for 0.5h-2h to obtain a phenolic modified alkali lignin solution;

[0052] The mass of lignin in the alkali lignin solution accounts for 40% of the total mass of lignin and phenol, the alkali catalyst is a sodium hydroxide solution, and the mass of active ingredients in the alkali catalyst is 5% of the total mass of lignin and phenol;

[0053] ③ Add formaldehyde solution with a concentration of 37% in batches to the phenolic modified alkali lignin solution obtained in ②, and add 80% of the total amount of formaldehyde sol...

Embodiment 3

[0056] The mass of lignin accounted for 40% of the total mass of lignin and phenol, and the mass of furfural accounted for 10% of the total mass of furfural and formaldehyde. Other conditions were the same as in Example 2, and lignin-based phenolic resin adhesive LPF4010 was obtained.

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Abstract

The invention relates to a method for removing smoke by virtue of an ultrasonic atomization technique, belonging to the technical field of environmental protection. The method comprises the steps of catalyzing the hydration of biomass hemicellulose by virtue of diluted acid to prepare a xylose solution, catalyzing the dehydration of xylose through concentrated acid to prepare furfural, catalyzingthe extraction of lignin through alkali to obtain an alkali lignin solution, carrying out phenolation modification on alkali lignin by taking phenol as a phenolation reagent and alkali as a catalyst,substituting phenol with modified lignin in different proportions, substituting formaldehyde with furfural in different proportions, and preparing a lignin-base phenolic resin adhesive through quaternary synergetic copolymerization of lignin, furfural, phenol and formaldehyde. According to the method, a hydrolyzed and dehydrated product of hemicellulose is taken as a cross-linking agent, so that the industrial application problem that the bonding strength of the adhesive is decreased due to the increase the proportion of lignin substituted phenol in the prior art is solved, and the total substitution rate of biomass-derived chemicals to fossil resource-derived phenol and formaldehyde is increased.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for removing smog by using ultrasonic atomization technology. Background technique [0002] The comprehensive utilization of biomass resources and the preparation of biomass fuels and chemicals have attracted widespread attention from all walks of life in the world. The use of hemicellulose to produce xylose and furfural, and the use of cellulose to produce ethanol and papermaking have formed industrialized production. Relatively speaking, the utilization rate of lignin is low, which has become a bottleneck for the comprehensive utilization of biomass resources. For example, the by-product of pulp and paper industry is 50 million tons of lignin every year, only 2% is utilized, and the rest is passively burned. Lignin accounts for 25% to 35% in the organic components of biomass, and the energy content reaches 40%. Therefore, the study of lignin is of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/14C08G8/28C08G8/10C08H7/00C08B11/12C08B1/08C07D307/50
CPCC09J161/14C07D307/50C08B1/08C08B11/12C08G8/10C08G8/28C08H6/00
Inventor 肖雄飞
Owner JILIN XIONGFEI TECH