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Method for preparing low-carbon alkene by catalytic cracking of micro algae

A low-carbon olefin, catalytic cracking technology, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc., can solve the problem of no public report on the production of olefins by microalgae

Inactive Publication Date: 2012-07-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are no public reports on the production of olefins by microalgae at home and abroad.

Method used

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  • Method for preparing low-carbon alkene by catalytic cracking of micro algae
  • Method for preparing low-carbon alkene by catalytic cracking of micro algae
  • Method for preparing low-carbon alkene by catalytic cracking of micro algae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Microalgae cultivation

[0030] Seawater golden algae cultivation:

[0031] Filter natural seawater with ten layers of gauze, sterilize at 121°C for 15 minutes, cool to room temperature, add f / 2 medium to obtain seawater microalgae culture nutrient solution, the specific concentration of each component is as follows: NaNO 3 (sodium nitrate) 8.83×10 -4 M, NaH 2 PO 4 (sodium dihydrogen phosphate) 3.63×10 -5 M, Na 2 SiO 3 (sodium silicate) 1.07×10 -4 M, FeCl 3 (ferric chloride) 1×10 -5 M, EDTA.2Na (EDTA disodium salt) 1×10 -5 M, CuSO 4 (copper sulfate) 4×10 -8 M, Na 2 MoO 4 (sodium molybdate) 3×10 -8 M, ZnSO 4 (zinc sulfate) 8×10 -8 M, CoCl 2 ·6H 2 O(cobalt chloride) 5×10 -8 M, MnCl 2 4H 2 O (manganese chloride) 9×10 -7 M, B 12 1×10 -10 M, B 1 3×10 -7 M, biotin 2 x 10 -9 M.

[0032] The golden algae cells to be cultured were divided into 1.0×10 6Cells / ml were inoculated into the plate reactor equipped with the above nutrient solut...

Embodiment 2

[0033] Embodiment 2: Microalgae cultivation

[0034] Seawater diatom culture:

[0035] Filter natural seawater with ten layers of gauze, sterilize at 121°C for 15 minutes, cool to room temperature, add f / 2 medium to obtain seawater microalgae culture nutrient solution, the specific concentration of each component is as follows: NaNO 3 (sodium nitrate) 8.83×10 -4 M, NaH 2 PO 4 (sodium dihydrogen phosphate) 3.63×10 -5 M, Na 2 SiO 3 (sodium silicate) 1.07×10 -4 M, FeCl 3 (ferric chloride) 1×10 -5 M, EDTA.2Na (EDTA disodium salt) 1×10 -5 M, CuSO 4 (copper sulfate) 4×10 -8 M, Na 2 MoO 4 (sodium molybdate) 3×10 -8 M, ZnSO 4 (zinc sulfate) 8×10 -8 M, CoCl 2 ·6H 2 O(cobalt chloride) 5×10 -8 M, MnCl 2 4H 2 O (manganese chloride) 9×10 -7 M, B 12 1×10 -10 M, B 1 3×10 -7 M, biotin 2 x 10 -9 M.

[0036] The diatom cells to be cultured were divided into 1.0×10 6 Cells / ml were inoculated into the plate reactor equipped with the above nutrient solution, cultured u...

Embodiment 3

[0037] Embodiment 3: Microalgae cultivation

[0038] Freshwater Chlorella Cultivation:

[0039] Add TAP nutrient salt to triple distilled water, sterilize at 121°C for 15 minutes, and cool to room temperature to obtain freshwater microalgae culture nutrient solution. The composition of each component is as follows (mg / l): NaNO 3 100. NaH 2 PO 4 2H 2 O20, EDTA-Na45, H 3 BO 3 33.6, FeCl 3 ·6H 2 O 1.3, MnCl 2 4H 2 O0.36, ZnCl 2 0.021, CoCl 2 ·6H 2 O 0.02, CuSO 4 ·5H 2 O 0.02, (NH 4 ) 6 MO 7 o 24 4H 2 O0.009.

[0040] The green algae cells to be cultured were divided into 0.6×10 6 Cells / ml were inoculated into the plate reactor equipped with the above nutrient solution, cultured under light in the cultivation room, the temperature was controlled at 25-28°C, and fluorescent lamps with a light intensity of 3000-10000Lx were used to irradiate from both sides of the reactor. The ratio is 14h:10h. After culturing for 8 days, the green algae reaching a certain den...

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Abstract

The invention provides a method for preparing low-carbon alkene by catalytic cracking of micro algae aiming at increasing shortage of fossil resources and the characteristics that biomass has greatly similar properties and utilization modes as the fossil resources and is environment-friendly and renewable. The method comprises the step of directly catalytically cracking the micro algae serving asa raw material to prepare the low-carbon alkene under the action of a catalyst, wherein the temperature of the catalytic cracking reaction is between 400 and 750 DEG C; the weight ratio of the catalyst to the dry micro algae is 1-70: 1; and the catalyst is one of zeolite molecular sieve, alumina, silicon dioxide, kieselguhr, kaolin and acid argil or mixture of a plurality of porous materials.

Description

technical field [0001] The invention relates to a method for directly producing basic chemicals from microalgae biomass, in particular to a method for producing low-carbon olefins such as ethylene, propylene and butene by direct high-temperature catalytic cracking of microalgae under the action of a catalyst. Background technique [0002] Fossil energy is the main energy we consume at present. From the perspective of the global energy consumption structure, fossil energy such as oil, coal, and natural gas account for nearly 90% of the total energy consumption. However, with the continuous development of mining, the depletion of global fossil energy is inevitable, and it is expected that it will be basically exhausted within this century. [0003] Biomass energy has the same utilization form as fossil energy. From a chemical point of view, the composition of biomass is C-H compounds, which are of the same kind as conventional fossil fuels, such as petroleum and coal. Since ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/00C07C11/04C07C11/06C07C11/08
Inventor 许磊刘中民张今令陈兆安张莹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI