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A method for producing microalgae oil by using flue gas

A microalgal oil and flue gas technology, applied in the fields of biotechnology and bioenergy, can solve the problem of limited SOx removal effect, and achieve the effects of promoting endurance improvement, increasing oil production, and high carbon sequestration efficiency.

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the tolerance to SOx and NOx in the flue gas, can purify the flue gas, and the removal rate of NOx can reach more than 80%, but the removal effect of SOx is limited

Method used

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  • A method for producing microalgae oil by using flue gas
  • A method for producing microalgae oil by using flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 8L BG11 microalgae culture medium, 400mL Scenedesmus HY-D3 seed liquid and 400mL Chlorella SF-B1 seed liquid into a 20L photobioreactor, and pass CO 2 Volume content is 40v%, NO volume content is 0.08%, SO 2 Flue gas with a volume content of 0.06%, 300mL Scenedesmus obliquus FSH-Y2 seed solution was added at one time after 24 hours of cultivation. The culture temperature of the control culture system was 25°C, the light cycle was 24h, the light-dark time ratio was 14:10, and the light intensity was 10000Lux. After culturing for 7 days, the culture was terminated, the algae liquid was collected by centrifugation, and the dry weight of the algae powder was measured after vacuum freeze-drying at -60°C to a constant weight, and the biomass production was calculated, and the total lipid content was measured by the n-hexane:ethyl acetate method . After testing, the dry cell weight can reach 12.3g / L, and the oil content is 46.5% of the dry cell weight. After detection a...

Embodiment 2

[0040] Add 8L BG11 microalgae culture medium, 800mL Scenedesmus HY-D3 seed liquid and 800mL Chlorella SF-B1 seed liquid into a 20L photobioreactor, and pass CO 2 Volume content is 40v%, NO volume content is 0.08%, SO 2 With a volume content of 0.06% flue gas, 200 mL of Scenedesmus obliquus FSH-Y2 seed solution was added at one time after 12 hours of cultivation. The culture temperature of the control culture system was 35°C, the light cycle was 24h, the light-dark time ratio was 14:10, and the light intensity was 10000Lux. After culturing for 7 days, the culture was terminated, the algae liquid was collected by centrifugation, and the dry weight of the algae powder was measured after vacuum freeze-drying at -60°C to a constant weight, and the biomass production was calculated, and the total lipid content was measured by the n-hexane:ethyl acetate method . After testing, the dry cell weight can reach 12.5g / L, and the oil content is 47.5% of the dry cell weight. After detecti...

Embodiment 3

[0042] Add 8L BG11 microalgae medium, 600mL Scenedesmus HY-D3 seed liquid and 200mL Chlorella SF-B1 seed liquid into a 20L photobioreactor, and pass CO 2 Volume content is 40v%, NO volume content is 0.08%, SO 2 With a volume content of 0.06% flue gas, 400 mL of Scenedesmus obliquus FSH-Y2 seed solution was added at one time after 48 hours of cultivation. The culture temperature of the control culture system was 20°C, the light cycle was 24h, the light-dark time ratio was 14:10, and the light intensity was 10000Lux. After culturing for 7 days, the culture was terminated, the algae liquid was collected by centrifugation, and the dry weight of the algae powder was measured after vacuum freeze-drying at -60°C to a constant weight, and the biomass production was calculated, and the total lipid content was measured by the n-hexane:ethyl acetate method . After testing, the dry cell weight can reach 12.1g / L, and the oil content is 46.2% of the dry cell weight. After detection and c...

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Abstract

The invention relates to a method for producing microalgae oil by using flue gas, adding microalgae culture medium, Scenedesmus HY‑D3 seed liquid and Chlorella SF‑B1 seed liquid into a photobioreactor, and feeding CO 2 The volume content is 5%~45%, SO 2 The flue gas with a volume content of no more than 0.06% and a NOx volume content of no more than 0.08% was cultivated for 12-48 hours by adding Scenedesmus oblique FSH-Y2 seed solution for mixed culture. The inventive method has improved microalgae culture system to high concentration CO 2 Excellent tolerance and solubility, improve the efficiency of carbon fixation, and at the same time remove SOx and NOx in the flue gas, and purify the flue gas.

Description

technical field [0001] The invention belongs to the fields of biotechnology and bioenergy, and in particular relates to a method for producing microalgae oil by using flue gas. Background technique [0002] Due to the decrease of fossil energy and the increase of greenhouse effect caused by the use of fossil energy, more and more scientific researchers focus on the development and utilization of renewable energy. As the most important renewable energy on earth, biomass energy includes forestry biomass, crops, aquatic plants, agricultural waste, etc. Among many biomass energy sources, microalgae is an important renewable resource. They have the characteristics of wide distribution, large biomass, high photosynthetic efficiency, strong environmental adaptability, short growth cycle, and high biomass yield. Its cells contain unique primary or secondary metabolites with complex chemical composition. The solar energy conversion efficiency of microalgae can reach 3.5%, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/6463C12P39/00B01D53/84B01D53/50B01D53/56C12R1/89
CPCC12P7/6463C12P39/00B01D53/84B01D53/50B01D53/56B01D2258/0283Y02P20/59Y02A50/20
Inventor 师文静樊亚超张霖廖莎李晓姝
Owner CHINA PETROLEUM & CHEM CORP
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