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Method for preparing high-calorific-value fuel by utilizing fermentation residue of lignocellulosic material

A technology for lignocellulosic raw material and fermentation residue, which is applied in the field of preparing high-calorific value fuel by using lignocellulosic raw material fermentation residue, and achieves the effects of low nitrogen oxide and sulfide content, good mechanical performance and saving boiler energy consumption

Inactive Publication Date: 2017-05-10
BEIJING FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, solid fuels prepared from whole biomass such as straw or wood flour have been industrialized, but there is no report on related technologies that utilize the advantages of high calorific value and cross-linkability of lignin simply by using fermentation residues.

Method used

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  • Method for preparing high-calorific-value fuel by utilizing fermentation residue of lignocellulosic material
  • Method for preparing high-calorific-value fuel by utilizing fermentation residue of lignocellulosic material
  • Method for preparing high-calorific-value fuel by utilizing fermentation residue of lignocellulosic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take a certain quality of bagasse fermentation residue, wash it with water, and centrifuge it at a speed of 4,000 rpm for 10 minutes. Pour out the centrifuged liquid. The solid part has a light-colored protein layer and a dark-colored lignin layer. Use a medicine spoon The protein layer was separated, and the lignin layer was dried in an oven at 50° C. and crushed. The pulverized solid and wood tar are mixed at a mass ratio of 95 / 5, 90 / 10 and 85 / 15 respectively, and after stirring evenly, put into a briquetting machine to press into small pieces at a pressure of 10Mpa, and test its combustion performance and mechanical properties .

[0023] The specific test method is as follows: the calorific value is measured by the ZDHW-5000 calorimeter produced by Henan Hengke Instrument Factory; Put the fuel into the water for 5 seconds, absorb the water on the surface after taking it out, and weigh the mass change. The specific experimental data are shown in Table 1.

[0024] T...

Embodiment 2

[0028] Take a certain quality of straw fermentation residue, and prepare fermentation residue powder according to the method in Example 1. The pulverized solid and wood tar are mixed at a mass ratio of 95 / 5, 90 / 10 and 85 / 15 respectively, and after stirring evenly, put into a briquetting machine to press into small pieces at a pressure of 10Mpa, and test its combustion performance and mechanical properties .

[0029] The specific test method is as described in Example 1, and the specific experimental data are shown in Table 2.

[0030] Table 2:

[0031]

[0032] It can be seen from Table 2 that the combustion performance and mechanical properties of straw fermentation residues are similar to those of bagasse fermentation residues. With the addition of wood tar, the fuel calorific value also gradually increases, but at the same time the fuel density gradually decreases, and the water permeability becomes larger, but its calorific value and density are slightly higher than t...

Embodiment 3

[0034] Take a certain quality of furfural slag fermentation residue, and prepare the fermentation residue powder according to the method in Example 1. The pulverized solid and wood tar are mixed at a mass ratio of 95 / 5, 90 / 10 and 85 / 15 respectively, and after stirring evenly, put into a briquetting machine to press into small pieces at a pressure of 10Mpa, and test its combustion performance and mechanical properties .

[0035] The specific test method is as described in Example 1, and the specific experimental data are shown in Table 3.

[0036] table 3:

[0037]

[0038] It can be seen from the table that the combustion performance and mechanical properties of furfural residue fermentation residue are similar to those of bagasse fermentation residue, but the drop resistance and water permeability are poor. This is because the lignin structure of furfural residue lignin is different from that of other fiber raw materials , It has undergone severe condensation itself, so ...

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Abstract

The invention relates to a high-calorific-value fuel prepared by utilizing fermentation residue of a lignocellulosic material and a preparation method thereof. The preparation method comprises the following steps: washing the fermentation residue, carrying out centrifugal separation so as to obtain free sugar and protein, then carrying out drying, carrying out grinding or mechanical crushing so as to prepare particles with a particle size of 0.5 mm or below, carrying out blending with wood tar or coal powder, and carrying out extrusion molding so as to prepare a rod-shaped or block-shaped solid fuel. According the invention, a new utilization path is provided for solid residues produced in the process of producing bioethanol, and combined production of a liquid fuel and a solid fuel can be realized. The solid fuel provided by the invention can reach a calorific value of 5000 to 6000 kcal, has the advantages of low material-crushing energy consumption, less additive mass, mild molding conditions, good mechanical properties and low contents of nitrogen oxide and sulfide in a combustion product, and is a green and environment-friendly high-grade solid fuel.

Description

technical field [0001] The invention relates to the preparation of high-grade fuel solid fuel by using industrial waste, especially a kind of fuel prepared by blending lignocellulosic raw material fermentation residue with coal or tar. Background technique [0002] With the continuous development of the world economy and the deepening of industrialization, people's demand for energy has also increased, and the amount of energy reserves has become an important factor affecting the operation of society. The use of biomass as a renewable resource to produce energy can largely alleviate the current increasingly serious environmental and energy problems. However, the simple use of biomass combustion has problems such as low calorific value, low thermal efficiency, large volume, and difficulty in transportation. The thermal efficiency of directly burning biomass is only 10%-30%, and the fuel ash produced during the combustion process also has a low ash melting point, Easy to slag...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30C10L5/442C10L5/44C10L5/445C10L2290/30C10L2290/32
Inventor 蒋建新程毅刘彦涛赵鹏翔卜令习赵承宇
Owner BEIJING FORESTRY UNIVERSITY
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