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Method of preparing charcoal from antibiotic mushroom dregs

A technology of antibiotic bacteria residue and biochar, which is applied in the field of resource utilization of solid waste, can solve problems such as low resource utilization rate, incomplete removal of residual pollutants, and difficult dehydration, so as to achieve resource utilization and good environmental benefits , Solve the effect of dehydration

Inactive Publication Date: 2017-11-21
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the difficulties in the dehydration of the existing bacterial residues, the low utilization rate of resources, and the incomplete removal of residual pollutants, etc., to provide a method that enables efficient dehydration of antibiotic residues with high water content, and at the same time, high added value utilizes A method for preparing biochar with high utilization value from by-products in the process of fungal residue treatment

Method used

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  • Method of preparing charcoal from antibiotic mushroom dregs

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Experimental program
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Effect test

Embodiment 1

[0038] The antibiotic bacteria residue with a water content of 80% is injected into the preheating mixing tank, and the remaining steam after the subsequent hydrothermal reaction is completed is used to preheat the antibiotic bacteria residue. Send the preheated slag into the hydrothermal reaction kettle, and pass the saturated steam generated by the steam boiler at 180°C through the steam pipe into the reaction kettle to directly contact the preheated slag for heating, so that the reaction temperature of the hydrothermal reaction kettle is 160 ℃, the pressure is 1.5MPa, and the hydrothermal reaction time is 0.5h. Under the environment of high temperature and high pressure, the structure of the colloid and cells in the antibiotic residue is destroyed, and the precipitation of the liquid in the antibiotic residue is promoted. After the completion of the hydrothermal reaction, the temperature of the remaining steam is 150°C, and it is sent to the preheating mixing tank for prehe...

Embodiment 2

[0041] The antibiotic bacteria residue with a water content of 85% is injected into the preheating mixing tank, and the remaining steam after the subsequent hydrothermal reaction is completed is used to preheat the antibiotic bacteria residue. Then feed the preheated slag into the hydrothermal reaction kettle, and pass the saturated steam generated by the steam boiler at 200°C through the steam pipe into the reaction kettle to directly contact the preheated slag for heating, so that the reaction temperature of the hydrothermal reaction kettle is 180°C, pressure 1.8MPa, hydrothermal reaction time 1.5h. Under the environment of high temperature and high pressure, the structure of the colloid and cells in the antibiotic residue is destroyed, and the precipitation of the liquid in the antibiotic residue is promoted. After the completion of the hydrothermal reaction, the temperature of the remaining steam is 160°C, which is sent to the preheating mixing tank for preheating the anti...

Embodiment 3

[0044] The antibiotic bacteria residue with a water content of 90% is injected into the preheating mixing tank, and the remaining steam after the subsequent hydrothermal reaction is completed is used to preheat the antibiotic bacteria residue. Then feed the preheated slag into the hydrothermal reaction kettle, and pass the saturated steam generated by the steam boiler at 220°C through the steam pipe into the reaction kettle to directly contact the preheated slag for heating, so that the reaction temperature of the hydrothermal reaction kettle is 200°C, pressure 2MPa, hydrothermal reaction time 1h. Under the environment of high temperature and high pressure, the structure of the colloid and cells in the antibiotic residue is destroyed, and the precipitation of the liquid in the antibiotic residue is promoted. After the completion of the hydrothermal reaction, the temperature of the remaining steam is 180°C, and it is sent to the preheating mixing tank for preheating the antibio...

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Abstract

The invention discloses a method of preparing charcoal from antibiotic mushroom dregs. The method comprises the following steps: pre-heating treatment: feeding the antibiotic mushroom dregs into a pre-heating mixing tank for pre-heating treatment to obtain preheated mushroom dregs; hydrothermal reaction: feeding the pre-heated antibiotic mushroom dregs into a hydrothermal reaction kettle, introducing saturated steam into the hydrothermal reaction kettle to be directly contacted with the pre-heated antibiotic mushroom dregs to be heated for hydrothermal reaction, to obtain a hydrothermal mixture, and after discharging residual steam, feeding the mixture to the pre-heating mixing tank; solid-liquid separation: feeding the obtained hydrothermal mixture to mechanical dehydrating equipment for solid-liquid separation to obtain the mushroom dreg solids, the solid content rate of which is over 60% and a hydrothermal liquid; and pyrolysis carbonization: feeding the antibiotic mushroom dreg solids obtained by solid-liquid separation into a carbonization furnace for pyrolysis carbonization to obtain charcoal and combustible gas. According to the method disclosed by the invention, the high water content rate antibiotic mushroom dregs can be efficiently dehydrated, and meanwhile, byproducts in the mushroom dreg treatment process are utilized with high additional value, so that charcoal with high utilization value is output.

Description

technical field [0001] The invention relates to the field of resource utilization of solid waste, in particular to a method for preparing biochar from antibiotic bacteria residues. Background technique [0002] At present, China is the world's largest producer of antibiotics. In 2009, my country's antibiotic output reached 147,000 tons, accounting for about 70% of the world's total output. According to the calculation of 8-10 tons of antibiotic residues produced by producing 1 ton of antibiotics, my country's antibiotic bacteria The annual output of slag reaches about 1.3 million tons. As a kind of solid waste, antibiotic residue mainly includes unused culture medium and mycelia, and also includes a small amount of antibiotic residues. At present, how to realize the safe disposal and resource utilization of antibiotic residues is an urgent problem for antibiotic pharmaceutical companies. [0003] In the past, the main disposal technology of antibiotic residues was to dry th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02
CPCC10B53/02Y02E50/10
Inventor 汪印李春星李杰
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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