An extraction and separation method for reducing moisture in biomass hydrothermal liquefaction oil

A technology of hydrothermal liquefaction and separation method, which is applied in the preparation of liquid hydrocarbon mixtures, the treatment of hydrocarbon oil, and the petroleum industry. The effect of low production cost and improved quality

Active Publication Date: 2021-06-29
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have shown that 46-79% of the oxygen in biomass is converted into water and most of the water finally exists in the biomass hydrothermally liquefied oil, but too high water content will cause the biomass hydrothermally liquefied oil to stratify
[0004] At present, there are mainly problems such as high water content, high oxygen content, and low calorific value of biomass hydrothermally liquefied oil. There is no report on the method of reducing moisture in biomass hydrothermally liquefied oil.

Method used

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  • An extraction and separation method for reducing moisture in biomass hydrothermal liquefaction oil

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Effect test

Embodiment 1

[0041] An extraction and separation method for reducing moisture in biomass hydrothermally liquefied oil, the process flow diagram is shown in figure 1 , including the following steps:

[0042] First, 15g of corn stalk powder and 150mL of deionized water were added to a batch-type high-temperature and high-pressure reactor, and after hydrothermal liquefaction at 320°C and a pressure of 10MPa, a biomass hydrothermally liquefied oil-solid-liquid mixture with a moisture content of 20.32% was obtained. A. After uniform stirring for 10 minutes, the biomass hydrothermal liquefaction oil solid-liquid mixture A is suction-filtered with a 0.45 μm organic filter membrane to obtain the biomass hydrothermal liquefaction oil-liquid phase product, which is preserved as a sample; for the solid-phase product obtained by suction filtration Add 50mL of ethanol, stir evenly for 10min, then use 0.45μm organic filter membrane to carry out suction filtration to obtain biomass hydrothermally liquefi...

Embodiment 2

[0047] An extraction and separation method for reducing moisture in biomass hydrothermally liquefied oil, the process flow diagram is shown in figure 1 , including the following steps:

[0048]First, 15g of corn stalk powder and 150mL of deionized water were added to a batch-type high-temperature and high-pressure reactor. After hydrothermal liquefaction at 320°C and a pressure of 10MPa, a biomass hydrothermally liquefied oil-solid-liquid mixture with a moisture content of 18.85% was obtained. A. After stirring evenly for 20 minutes, the biomass hydrothermal liquefaction oil solid-liquid mixture A is suction-filtered with a 0.45 μm organic filter membrane to obtain the biomass hydrothermal liquefaction oil-liquid phase product, and save the reserved sample; the solid-phase product obtained by suction filtration Add 50mL of ethanol, stir evenly for 20min, then use 0.45μm organic filter membrane to carry out suction filtration to obtain biomass hydrothermally liquefied oil treat...

Embodiment 3

[0052] An extraction and separation method for reducing moisture in biomass hydrothermally liquefied oil, the process flow diagram is shown in figure 1 , including the following steps:

[0053] First, 15g of corn stalk powder and 150mL of deionized water were added to a batch-type high-temperature and high-pressure reactor. After hydrothermal liquefaction at 320°C and a pressure of 10MPa, a biomass hydrothermally liquefied oil-solid-liquid mixture with a moisture content of 21.96% was obtained. A. After uniform stirring for 15 minutes, the biomass hydrothermal liquefaction oil solid-liquid mixture A is suction-filtered with a 0.45 μm organic filter membrane to obtain the biomass hydrothermal liquefaction oil-liquid phase product, and the reserved sample is preserved; the solid phase obtained by suction filtration Add 100mL of ethanol and methanol mixed alcohol with a volume ratio of 1:1 to the product, stir evenly for 15min, and then filter with 0.45μm organic filter membrane ...

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Abstract

The invention discloses an extraction and separation method for reducing moisture in biomass hydrothermally liquefied oil, which belongs to the field of biomass energy. The method obtains a liquid-phase product and a solid-phase product through solid-liquid separation; adds a polar water-soluble small molecule alcohol compound to the solid-phase product, and then separates solid-liquid to obtain a biomass hydrothermally liquefied oil-alcohol phase; Add acetone to the biomass hydrothermally liquefied oil treatment B, and then separate the solid and liquid to obtain the biomass hydrothermally liquefied oil treatment C and the biomass hydrothermally liquefied oil acetone phase; to the liquid phase product and the biomass hydrothermally liquefied oleyl alcohol phase, adding chlorinated alkanes for extraction to obtain the chlorinated alkane phase of the biomass hydrothermally liquefied oil and the aqueous phase waste liquid; the chlorinated alkane phase of the biomass hydrothermally liquefied oil and the acetone phase of the biomass hydrothermally liquefied oil are evaporated to remove the extraction agent to obtain biomass hydrothermally liquefied oil. The method can effectively reduce the water content of the biomass hydrothermally liquefied oil, significantly improve the quality of the biomass hydrothermally liquefied oil, and has a simple process and convenient operation.

Description

technical field [0001] The invention belongs to the field of biomass energy, and in particular relates to an extraction and separation method for reducing moisture in biomass hydrothermally liquefied oil. Background technique [0002] Biomass hydrothermal liquefaction oil is a kind of bio-oil obtained by thermochemically converting biomass in sub / supercritical water, and has very little sulfur, nitrogen and carbon zero emission performance. Biomass hydrothermal liquefaction oil It is more environmentally friendly than traditional fossil fuels and is of great significance to solving the energy crisis. It is one of the most promising liquid fuels in the future. In recent years, biomass hydrothermal liquefaction technology has attracted more and more researchers' attention because of its advantages over other biomass energy utilization technologies. [0003] Usually, the moisture content in biomass hydrothermally liquefied oil is about 5-30%, which is higher than that of other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10G53/04
CPCC10G1/002C10G53/04C10G2300/1011C10G2300/4006C10G2300/4012C10G2300/44
Inventor 李秉硕刘懿萱杨天华李润东开兴平
Owner SHENYANG AEROSPACE UNIVERSITY
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