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Method for utilizing hydrothermal carbonization for preparing biomass barbecuing charcoal

A technology of hydrothermal carbonization and charcoal grilling, which is applied to biofuels, waste fuels, solid fuels, etc., can solve the problems of loss of cohesive properties of charcoal particles, detrimental to the health of grillers, and increased charcoal production costs, and achieve a simplified process, The effect of good bonding effect and lower production cost

Inactive Publication Date: 2016-05-25
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method of preparing barbecue charcoal is to pyrolyze biomass under the condition of high temperature and oxygen deficiency. The charcoal particles obtained by this process lose the bonding performance of raw materials, and must be bonded and formed by adding a binder, which increases the Carbon production cost
[0004] In addition, the ash content of agricultural and forestry waste such as straw is very large. After pyrolysis, the ash is all deposited in the barbecue charcoal, which reduces its combustion performance. In addition, during the barbecue, the ash sticking to the food is not conducive to a series of problems such as the health of the griller.

Method used

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  • Method for utilizing hydrothermal carbonization for preparing biomass barbecuing charcoal

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Experimental program
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Effect test

Embodiment 1

[0023] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0024] The biomass raw material in this embodiment is cotton stalks.

[0025] figure 1 It is a flowchart of the hydrothermal carbonization of biomass barbecue charcoal in this embodiment.

[0026] Such as figure 1 As shown, when cotton stalks are used as biomass raw materials to produce biomass barbecue charcoal through hydrothermal carbonization, the process flow is as follows:

[0027] The first step S1, stock preparation, cotton stalk is 1 kilogram, and water is 10 kilograms.

[0028] The second step S2, hydrothermal carbonization reaction, put the prepared materials into the reaction container for hydrothermal carbonization reaction. The reaction container selected this time is a high-pressure reactor. Oxygen, the temperature of the reaction vessel is raised to 350°C, the pressure of the vessel is increased to 4.5Mpa, and a hydrot...

Embodiment 1

[0034] Function and effect of implementing 1 example

[0035] The product parameters obtained according to this embodiment are as follows: ash content 2.31%, fixed carbon content 61.26%, calorific value 21.85MJ / Kg, ignition point 283°C, compressive strength 7MPa, wherein the ash content is significantly lower than that obtained by the traditional method of preparing barbecue charcoal The ash content and strength of biochar meet the transportation requirements.

Embodiment 2

[0037] The biomass raw material of this embodiment is coconut shell.

[0038] figure 1 It is the flow chart of hydrothermal carbonization system biomass barbecue charcoal in the present embodiment

[0039] Such as figure 1 As shown, when coconut shell is used as biomass raw material to produce biomass barbecue charcoal through hydrothermal carbonization, the process flow is as follows:

[0040] The first step S1 is to prepare materials, the coconut shell is 1 kg, and the water is 4 kg.

[0041] The second step S2, hydrothermal carbonization reaction, put the prepared materials into the reaction container for hydrothermal carbonization reaction. The reaction container selected this time is a high-pressure reactor. Oxygen, the temperature of the reaction vessel was raised to 300°C, the pressure of the vessel was increased to 4.0Mpa, and a hydrothermal carbonization reaction was carried out for 40 minutes to obtain a carbonized substance mixture.

[0042] The third step S3 is...

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Abstract

The invention provides a method for utilizing hydrothermal carbonization for preparing biomass barbecuing charcoal. The method is characterized by comprising the following step one of hydrothermal carbonization reaction, wherein a biomass raw material is any one of wood flour, cotton stalks, rice hulls and coconut shells, the biomass raw material and water are placed into a reaction vessel according to the mass ratio of 1: (4-12), inert gas is introduced, the hydrothermal carbonization reaction is carried out on the anoxic condition, reaction temperature ranges from 250 DEG C to 450 DEG C, reaction pressure ranges from 4 Mpa to 5 Mpa, and reaction time ranges from 20 min to 40 min, so that carbonized biomass mixed liquid is obtained; the step two of solid and liquid separation, wherein the carbonized mixed liquid is separated by utilizing a filtering device for obtaining a carbonized substance; the step three of crushing and screening, wherein the carbonized substance is crushed and screened to obtain charcoal particles with the particle size smaller than 0.5 mm; the step four of compressing and forming, wherein the carbonized substance is formed in a hot-pressed mode, so that the biomass barbecuing charcoal is obtained.

Description

technical field [0001] The invention belongs to the field of civil solid fuels, and in particular relates to a method for preparing biomass barbecue charcoal by hydrothermal carbonization. Background technique [0002] With the improvement of the quality of life, people's requirements for the output and quality of charcoal during barbecue are constantly increasing. At the same time, the amount of agricultural and forestry waste produced in China every year is considerable, and many wastes cannot be effectively treated. Therefore, it is of great significance to use agricultural and forestry wastes to prepare biomass barbecue charcoal. [0003] The traditional method of preparing barbecue charcoal is to pyrolyze biomass under the condition of high temperature and oxygen deficiency. The charcoal particles obtained by this process lose the bonding performance of raw materials, and must be bonded and formed by adding a binder, which increases the Charcoal cost. [0004] In addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCC10L5/445Y02E50/10Y02E50/30
Inventor 张守玉姚云隆张沛葛铭茆青李尤杨靖宁
Owner UNIV OF SHANGHAI FOR SCI & TECH
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