Process for preparing humic acid coproduced energy gas and biological carbon by hydrothermal carbonization of organic wastes

A technology of hydrothermal carbonization and organic waste, applied in waste fuel, petroleum industry, special form of dry distillation, etc., can solve the problems of prolonging anaerobic digestion cycle, complex organic waste composition, reducing anaerobic digestion production capacity, etc., to improve the quality of agricultural products , the effect of high yield of renewable resources and low yield of waste

Active Publication Date: 2017-09-26
DALIAN UNIV OF TECH
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Problems solved by technology

However, the composition of organic waste is very complex, especially containing more refractory organic matter, which will greatly prolong the anaerobic digestion cycle and reduce the anaerobic digestion capacity

Method used

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  • Process for preparing humic acid coproduced energy gas and biological carbon by hydrothermal carbonization of organic wastes

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Embodiment Construction

[0020] A process for producing humic acid and co-producing energy gas and biochar by hydrothermal carbonization of organic waste. The devices used in the process include an organic waste mixing unit, a hydrothermal carbonization reactor, a solid-liquid separation device, an alkali extraction unit, and a humic acid extraction unit. Acid plus acid precipitation concentration unit, membrane separation humic acid extraction unit, pH adjustment tank, anaerobic treatment unit, wastewater treatment unit, gas furnace, biogas recovery tank;

[0021] The organic waste mixing unit, hydrothermal carbonization reactor, solid-liquid separation device, alkali extraction unit and humic acid plus acid precipitation concentration unit are connected in sequence; organic waste with a particle size of 30 mesh and water are mixed in the organic waste with a mass ratio of 8:2 Mix evenly in the mixing unit, and then send it to the hydrothermal carbonization reactor for hydrothermal carbonization react...

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Abstract

The invention discloses a process for preparing humic acid coproduced energy gas and biological carbon by hydrothermal carbonization of organic wastes and belongs to the field of recycling of the organic wastes. The process disclosed by the invention comprises an organic waste mixing unit, a hydrothermal carbonization reactor, a solid-liquid separating device, an alkali extraction unit, a humic acid adding precipitation and concentration unit, a membrane separation humic acid extraction unit, a pH regulating reservoir, an anaerobic treatment unit, a wastewater treatment unit, a gas furnace and a methane recovering tank. The organic wastes are treated by using the process disclosed by the invention, so reduction of the organic wastes is realized, and the progress of converting the organic wastes into renewable resources such as humic acid, biological carbon and energy gas is also accelerated.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of organic waste, and in particular relates to a process for preparing humic acid and co-producing energy gas and biochar by hydrothermal carbonization of organic waste. Background technique [0002] The output of organic waste in my country is huge, and organic waste contains a large amount of biomass, which is an important renewable resource. The resource utilization of organic waste is of great significance to the sustainable development of the environment and economy. There are many methods for organic solid waste treatment, and different methods can be used for different types of waste. Municipal solid waste can be landfilled, incinerated and biologically treated. Biological treatment methods include aerobic composting and anaerobic digestion. The composting process requires a large amount of oxygen, which consumes a lot of energy; while anaerobic digestion not only does not con...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C08H99/00C12P5/02
CPCC08H6/00C10B53/00C12P5/023Y02E50/30
Inventor 张雷刘秋彤李爱民朱孔云
Owner DALIAN UNIV OF TECH
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