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A device and process for producing bio-oil by hydrothermal liquefaction of microalgae extracted from power plants

A hydrothermal liquefaction and bio-oil technology, applied in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of high energy consumption and low heating rate, and achieve the effects of saving energy consumption, improving quality, and rapidly heating up

Active Publication Date: 2017-09-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional hydrothermal liquefaction process for producing bio-oil has low heating rate and high energy consumption.

Method used

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  • A device and process for producing bio-oil by hydrothermal liquefaction of microalgae extracted from power plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The microalgae and ethanol are prepared according to the ratio of 1:8 to prepare the microalgae pulp. Each feeding amount is 1 / 3 of the volume of the interlayer 5 in the autoclave;

[0033] After the HZSM-5 catalyst is placed, start feeding. After the two-stage feeding is completed, hydrogen gas is introduced into the inner compartment 5 of the autoclave through the pneumatic conveying port 7, and the air in the inner compartment 5 of the autoclave is replaced twice to discharge the air;

[0034] Open the steam supply valve 11 of the inner compartment of the autoclave and the steam supply valve 10 of the outer compartment of the autoclave, and the four-pumped water steam of the steam turbine is divided into two ways to convey, and it is passed into the inner compartment 5 and the outer compartment 4 of the autoclave, and the inner layer of the autoclave 5 After reaching the pressure balance with the water vapor, close the valve 11 of the inner compartment of the autocla...

Embodiment 2

[0037] Prepare microalgae and ethanol at a ratio of 1:12 to prepare microalgae pulp. Each feeding amount is 2 / 3 of the volume of the interlayer 5 in the autoclave;

[0038] After placing the HZSM-5 catalyst, start feeding. After the two stages of feeding are completed, hydrogen gas is introduced into the inner compartment 5 of the autoclave through the pneumatic conveying port 7, and the air in the inner compartment 5 of the autoclave is replaced 3 times to discharge the air;

[0039] Open the steam supply valve 11 of the inner compartment of the autoclave and the steam supply valve 10 of the outer compartment of the autoclave, and the four-pumped water steam of the steam turbine is divided into two ways to convey, and it is passed into the inner compartment 5 and the outer compartment 4 of the autoclave, and the inner layer of the autoclave 5 After reaching the pressure balance with the water vapor, close the valve 11 of the inner compartment of the autoclave to stop the stea...

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Abstract

The invention belongs to the field of energy utilization, and relates to a device and technique for preparing biological oil by microalgae hydrothermal liquefaction by using power plant steam turbine extraction steam. The power plant steam turbine extraction steam is high-temperature high-pressure steam, and the quaternary extraction steam is used for hydrothermal liquefaction reaction of microalgae. The quaternary extraction steam of the steam turbine is divided into two streams, one stream is directly introduced into an inner interlayer of a high-pressure autoclave, and other stream is introduced into an outer interlayer of the high-pressure autoclave as a heat source. In the microalgae hydrothermal liquefaction reaction, the microalgae and ethanol are proportionally fed, a reticular filter layer is arranged inside the high-pressure autoclave, and an HZSM-5 catalyst is arranged. The steam of the power plant steam turbine after applying part of work is fully utilized, the pressure and temperature of the steam are utilized in the technique for preparing biological oil by microalgae hydrothermal liquefaction reaction, the conventional hydrothermal liquefaction technique is improved, the electric heating is utilized to reach the solvent critical value, and abundant energy consumption is lowered, thereby lowering the cost for preparing the biological oil, improving the oil preparation efficiency and enhancing the oil product.

Description

technical field [0001] The invention belongs to the field of energy utilization, and relates to a process and a device for producing bio-oil by hydrothermal liquefaction of microalgae, in particular to the reaction conditions for realizing hydrothermal liquefaction by using part of the high-temperature and high-pressure water vapor that has been worked by a steam turbine in a power plant. Background technique [0002] In order to solve the energy problem, the research on biomass energy in our country has been carried out one after another. At present, there are many sources of biomass raw materials, but most of them are faced with the problems of insufficient supply of raw materials, high cost of raw materials, conflicts between raw materials and food crops, and defects in conversion processes. Microalgae is a carbon three plant with high photosynthetic rate and high growth rate. In the field of biomass energy conversion, compared with other biomass, microalgae cultivation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/00
CPCC10L1/00C10L2200/0484C10L2290/02
Inventor 王爽孙超群曹斌王谦何志霞胡亚敏
Owner JIANGSU UNIV
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