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Method for comprehensively utilizing biomass waste containing rich silicon

A biomass waste and biomass technology, which is applied in the direction of solid waste removal, etc., can solve problems such as environmental protection and shortage of resources and energy, and achieve the effect of solving environmental protection and shortage of resources and energy.

Inactive Publication Date: 2010-08-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to efficiently transform and utilize agricultural and forestry wastes to solve the problems of environmental protection and resource and energy shortages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1: Remove foreign matter from the biomass waste, pulverize and dry, extract according to the dry biomass:dichloromethane-alcohol weight ratio of 1:10-20, and then use the biomass:hot water weight ratio of 1:5-15 Extraction, concentration of the extract to obtain bioactive substances and residue 1;

[0022] Step 2: the residual residue 1 is naturally dried and needs to be treated with a catalyst, and the dosage is 0.3 to 3% of the weight of the dry residual residue 1, and the catalyst is added; the dry residue 1: polymer weight ratio is 3 to 1: 1; discharge reaction The air of the device; the cracking reaction is carried out at 400-550 °C, and the reaction time is 0.5-3 hours;

[0023] Step 3: Collect gaseous products while cracking. The hydrocarbon gas containing C1~C4 is condensed at low temperature to obtain liquefiable gas; the liquid product is collected while cracking, and the liquid product is collected after being condensed by the condenser. After layering...

Embodiment 2

[0028] According to the preparation steps and method of Example 1, co-cracking was carried out in an atmospheric pressure reaction device. Rice husks were removed from foreign matter, crushed, 0.1 kg was taken, extracted with 1.5 kg of dichloromethane-alcohol, and then extracted with 1 kg of hot water, and concentrated to obtain biologically active substances and residue 1. Residual residue 1 is air-dried naturally and needs to be treated with a catalyst. Add an inorganic acid catalyst at 2.5% of the weight of residual residue 1, and add 0.7 kg of pulverized waste polypropylene. Exhaust the air, raise the temperature to 420°C, crack for 1 hour, collect the gas products while cracking, and condense the hydrocarbon gases containing C1 to C4 at low temperature to obtain liquefied gas; collect the liquid products while cracking, and the liquid products are condensed by the condenser Collect, and then separate to obtain hydrocarbon liquid products; at the same time, obtain water-so...

Embodiment 3

[0030] According to the preparation steps and method of Example 1, co-cracking was carried out in a normal pressure reactor. 0.1 kg of dried bamboo powder was extracted with 1.2 kg of dichloromethane-alcohol, and then extracted with 1.5 kg of hot water. After concentration, bioactive substances and residue 1 were obtained. Residual residue 1 is air-dried naturally, needs catalyst treatment, adds inorganic alkali catalyst by 3% of residual residue 1 weight, adds 0.8 kilogram of crushed waste polyethylene. Exhaust the air, raise the temperature to 520°C, and crack for 2 hours. Gas products are collected while cracking, and hydrocarbon gases containing C1 to C4 are condensed at low temperature to obtain liquefiable gases; liquid products are collected while cracking, and liquid products are collected after being condensed by a condenser, and then hydrocarbon liquid products are obtained through stratification; at the same time Obtain water-soluble oxygen-containing organic matte...

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Abstract

A method for comprehensively utilizing biomass waste containing rich silicon comprises the following steps that: firstly, agriculture and forestry biomass waste is extracted by using dichloromethane-ethanol and hot water to obtain bioactive materials with different uses, the balance is polymer cellulose, lignin and minerals, then the balance and polymer waste are cracked together, the lysate is hydrocarbon gas, oil-like hydrocarbons and oxygenated organic compound, and the residue is cracked to obtain silicide. Conversion percent of waste in the total mixed reaches 85-95%, hydrocarbon gas of the total product accounts for 15-22%, liquid hydrocarbons accounts for 38-56%, organic oxygen accounts for 19-25%, and the silicide accounts for 10-15%.

Description

technical field [0001] The invention relates to a technology for comprehensive utilization of silicon-rich biomass waste, specifically preparing biologically active substances, lysates and silicides by extracting and then cracking the silicon-rich biomass waste. Background technique [0002] As fossil resources such as petroleum are gradually decreasing, we are faced with the dilemma of whether to use food and feed to convert biomass energy; at the same time, the annual increase of agricultural and forestry waste also plagues our environmental protection; researchers have set their sights on agricultural and forestry waste cleaning, Efficient transformation and utilization. The main components of agricultural and forestry waste are cellulose, lignin, bioactive substances and silicon, etc., such as rice husk varieties and origins, the composition is different, roughly composed of: crude fiber 35.5% ~ 45% (polycondensation pentose 16% to 22%), xylin 21% to 26%, silicon dioxid...

Claims

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Application Information

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IPC IPC(8): B09B5/00B09B3/00
Inventor 崔艳丽毛建卫俞永平
Owner ZHEJIANG UNIV
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