A device and method for preparing bio-crude oil by continuous hydrothermal liquefaction of biomass

A technology of bio-crude oil and hydrothermal liquefaction, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, chemical/physical/physicochemical processes, etc., can solve the problems of difficult product separation and high cost, and achieve cost reduction and low cost , Improve the effect of universality

Active Publication Date: 2021-06-08
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An object of the present invention is to provide a method for preparing bio-crude oil by continuous hydrothermal liquefaction of biomass, which can solve the problems of high cost of biomass continuous production of bio-crude oil, difficulty in product separation and how to improve the stability of continuous operation of the system question

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  • A device and method for preparing bio-crude oil by continuous hydrothermal liquefaction of biomass

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Effect test

Embodiment 1

[0108] The device for preparing bio-crude oil by continuous hydrothermal liquefaction of biomass of the present invention is used to process microalgae materials. Among them, the moisture content of the biomass of the microalgae material is 80%, the reaction temperature of hydrothermal liquefaction is 285°C, the system pressure is 9.0MPa, and the reaction time is 20 minutes. After 10 hours of stable operation of the reactor, 52.0% of crude oil can be obtained. The state is stable, and the fluctuation range of temperature and pressure is not obvious.

Embodiment 2

[0110] The device for preparing bio-crude oil by biomass continuous hydrothermal liquefaction of the present invention is used to process animal feces materials. Among them, the water content of animal manure is 86%, the reaction temperature of hydrothermal liquefaction is 300°C, the system pressure is 10.8MPa, and the reaction time is 30 minutes. After 10 hours of stable operation of the reactor, 60.2% of crude oil can be obtained, and the operation state is stable. The fluctuation range of temperature and pressure is not obvious.

Embodiment 3

[0112] The device for preparing bio-crude oil by biomass continuous hydrothermal liquefaction of the present invention is used to process kitchen waste materials. Among them, the water content of kitchen waste is 89%, the reaction temperature of hydrothermal liquefaction is 320°C, the system pressure is 12.8MPa, and the reaction time is 45 minutes. After 8 hours of stable operation of the reactor, 59.2% of crude oil can be obtained. Stable, temperature and pressure fluctuation range is not obvious.

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Abstract

The invention belongs to the field of biomass energy utilization, in particular to a device and method for preparing bio-crude oil through continuous hydrothermal liquefaction of biomass. The device includes a double hydraulic cylinder feeding system (5), a material stirring tank (2), a preheating reactor (6), a hydrothermal liquefaction reactor (10), a product collection tank (23), and a back pressure valve (15) , filter (22), gas-liquid oil separator (17), circulating water pipeline (42) and control element. The feeding system of the device adopts a combination of a double hydraulic cylinder system and a high-pressure pump, which can improve the universality of raw materials and pumping efficiency, and reduce the cost of the feeding system. The product separation effect of this method is good, the safety of the experiment is improved, and the product can be efficiently and continuously separated without the additional use of organic reagents, and the separation device has a simple structure and low cost, and can be widely used in the continuous separation of biomass hydrothermal liquefaction products .

Description

technical field [0001] The invention belongs to the field of biomass energy utilization, in particular to a method and device for preparing bio-crude oil through continuous hydrothermal liquefaction of biomass. Background technique [0002] Biomass hydrothermal liquefaction (Hydrothermal liquefaction) uses biomass such as microalgae, crop straw, tree branches and leaves, livestock and poultry manure, kitchen waste, municipal solid waste and energy plants as raw materials, and uses water as the reaction solvent. It is a technology for rapidly converting biomass into bio-crude oil under the reaction temperature and pressure of 450°C and 5-28MPa. Bio-crude oil is a mixture of complex organic components with extremely high carbon content and properties similar to crude oil produced by hydrothermal liquefaction of biomass. Hydrothermal liquefaction technology prepares bio-crude raw materials without drying, and can directly undergo hydrothermal reaction to avoid drying energy co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01J19/00B01J19/20C10G1/00C11B1/04C11B1/00C11B3/00
CPCB01J19/0013B01J19/18B01J19/20C10G1/00C10G1/002C10G1/008C10G2300/1011C11B1/00C11B1/04C11B3/008
Inventor 刘志丹李虎岗朱张兵卢建文孔德亮张源辉
Owner CHINA AGRI UNIV
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