Method and device for oil production by means of mixed hydrothermal decomposition of kitchen garbage and microalgae

A kitchen waste, thermal decomposition technology, applied in the petroleum industry, fat oil/fat production, liquid carbon-containing fuel, etc., can solve the problems of incomplete conversion of biomass, low yield of liquefied oil, multi-process heat, etc., to achieve Alleviate the increasing shortage, be conducive to industrial application, and have high photosynthetic efficiency

Inactive Publication Date: 2018-12-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Hydrothermal liquefaction technology has unique advantages in biomass conversion, but the current technical level still has certain defects, such as incomplete biomass conversion (<95%), low yield of liquefied oil (<35%), and low oxygen content. High (12-18%), low calorific value (30-35MJ / kg) and other issues, compared with the standard oil calorific value (41.8MJ / kg), there is still a certain gap, and more process heat needs to be consumed, so further research is required Only by optimizing the technology can the process of industrial application be promoted

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  • Method and device for oil production by means of mixed hydrothermal decomposition of kitchen garbage and microalgae

Examples

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Effect test

Embodiment 1

[0038] A method for producing oil by mixing kitchen waste and microalgae through hydrothermal decomposition, comprising the following steps:

[0039] (1) Pretreatment of kitchen waste and microalgae raw materials: After collecting kitchen waste, sort out the inorganic impurities in the kitchen waste, and use the residues as raw materials; centrifuge and stand still the sorted raw materials, separate After the upper layer of oil is removed, it can be used as raw material for biodiesel or industrial oil, and the residue is roughly crushed to make food waste raw material; the microalgae is crushed to make microalgae raw material; the mixture of microalgae and kitchen waste is added to water and fully mixed Form a mass fraction of 10% slurry stand-by;

[0040] (2) Seal the hydrothermal reaction device 9 of high temperature and high pressure, and fill in an inert gas to adjust the initial pressure in the reaction device;

[0041] (3) Input the mixed slurry into the hydrothermal re...

Embodiment 2

[0052] A method for producing oil by mixing kitchen waste and microalgae through hydrothermal decomposition, comprising the following steps:

[0053] (1) Pretreatment of kitchen waste and microalgae raw materials: After collecting kitchen waste, sort out the inorganic impurities in the kitchen waste, and use the residues as raw materials; centrifuge and stand still the sorted raw materials, separate After the upper layer of oil is removed, it can be used as raw material for biodiesel or industrial oil, and the residue is roughly crushed to make food waste raw material; the microalgae is crushed to make microalgae raw material; the mixture of microalgae and kitchen waste is added to water and fully mixed Forming mass fraction is that the slurry of 50% is stand-by;

[0054] (2) Seal the hydrothermal reaction device 9 of high temperature and high pressure, and fill in an inert gas to adjust the initial pressure in the reaction device;

[0055] (3) Input the mixed slurry into the...

Embodiment 3

[0066] A method for producing oil by mixing kitchen waste and microalgae through hydrothermal decomposition, comprising the following steps:

[0067] (1) Pretreatment of kitchen waste and microalgae raw materials: After collecting kitchen waste, sort out the inorganic impurities in the kitchen waste, and use the residues as raw materials; centrifuge and stand still the sorted raw materials, separate After the upper layer of oil is removed, it can be used as raw material for biodiesel or industrial oil, and the residue is roughly crushed to make food waste raw material; the microalgae is crushed to make microalgae raw material; the mixture of microalgae and kitchen waste is added to water and fully mixed Forming mass fraction is that the slurry of 60% is stand-by;

[0068] (2) Seal the hydrothermal reaction device 9 of high temperature and high pressure, and fill the initial pressure in the reducing gas to adjust the reaction device;

[0069] (3) Input the mixed slurry into th...

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Abstract

The invention discloses a method and a device for oil production by means of mixed hydrothermal decomposition of kitchen garbage and microalgae. The method comprises the following steps: carrying outpretreatment on raw materials, i.e., the kitchen garbage and the microalgae to obtain slurry; (2) sealing a hydrothermal reaction device with high temperature and high pressure, and adjusting the initial pressure in the reaction device; (3) inputting the mixed slurry into the hydrothermal reaction device for carrying out a co-liquefaction reaction; (4) carrying out solid-liquid separation on sinking products after the reaction is finished, drying solids obtained by means of the solid-liquid separation, then inputting into a combustion apparatus for burning, and inputting the liquid and the gasobtained after the hydrothermal reaction into a cracking device together for cracking; (5) carrying out gas-liquid separation on the product obtained by cracking, and then condensing the liquid obtained by means of the gas-liquid separation to obtain refined oil; drying the separated non-condensable gas, and then directly entering the combustion apparatus for burning; (6) using the flue gas extracted from the combustion apparatus to provide heat for the hydrothermal reaction device and the cracking device. The method and the device do not need external energy supply, can continuously run, ishigh in production efficiency, and can be used for large-scale bio-oil production.

Description

technical field [0001] The present invention relates to a method and device for producing liquid fuel through hydrothermal liquefaction of food waste and microalgae, in particular to a method and device for producing fuel oil through hydrothermal liquefaction of food waste and microalgae with self-balanced production process energy . Background technique [0002] As the highest proportion of municipal solid waste, kitchen waste has the characteristics of coexistence of hazard and resource. Its harmfulness is reflected in the fact that there are a large number of perishable substances in kitchen waste, which are easy to pollute the environment and affect the city appearance during transportation or storage; the resource nature is reflected in the fact that kitchen waste contains rich organic matter. For the treatment of kitchen waste, there is no systematic and industrialized treatment mode at present. The common treatment method is to landfill or burn together with municipa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C11B1/14C11B1/04C11B1/02
CPCC10L1/02C11B1/02C11B1/04C11B1/14
Inventor 余昭胜唐芳芳方诗雯马晓茜
Owner SOUTH CHINA UNIV OF TECH
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