Method for preparing medium-chain fatty acid on hollow fiber membrane by utilizing fermentation of synthesis gas

A medium-chain fatty acid and synthesis gas technology, which is applied in the field of environmental engineering, can solve the problems of ecological environment pollution, difficult disposal of organic waste, and large energy consumption of medium-chain fatty acids, so as to ensure long-term operation and realize the effect of engineering integrated application.

Inactive Publication Date: 2018-12-21
TONGJI UNIV
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing medium-chain fatty acids by fermentation of synthesis gas on a hollow fiber membrane in order to overcome the defects in the above-mentioned prior art, so as to solve...

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  • Method for preparing medium-chain fatty acid on hollow fiber membrane by utilizing fermentation of synthesis gas
  • Method for preparing medium-chain fatty acid on hollow fiber membrane by utilizing fermentation of synthesis gas

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Embodiment

[0022] The reactor for preparing medium-chain fatty acids by fermentation of syngas is a continuous reactor with a double-layer glass structure, and its specific structure is as follows figure 1 Shown. The hollow fiber membrane 12 is bonded in the organic glass tube, inserted into the half-open cover at both ends of the reactor, and then sealed. The synthesis gas enters the reactor through the gas cylinder 11 through the air inlet at the bottom, and penetrates into the reactor through the hollow fiber membrane. The gas inlet volume is adjusted by the pressure reducing valve on the gas cylinder 11, and the aqueous solution circulates into the overflow through the pipeline. In the bottle 6, the peristaltic pump 10 circulates into the reactor. If there is air in the reactor, the gas enters the water-sealed bottle 9 from the overflow bottle 6 and then is discharged into the atmosphere. The outer glass of the reactor is a water bath heating layer, which is provided with a water bath...

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Abstract

The invention relates to a method for preparing medium-chain fatty acid on a hollow fiber membrane by utilizing fermentation of synthesis gas. The hollow fiber membrane is adhered to the interior of areactor, sludge, a medium needed by growth of microorganisms and a methane inhibitor are added into the reactor, the synthesis gas is injected into the reactor continuously, the reaction temperatureis controlled, so that substances in the reactor flows cyclically to react stably, and the medium-chain fatty acid is prepared. Compared with the prior art, the method solves the problem that competitiveness exists between the plant oil generated from the grain crop needed by preparing the medium-chain fatty acid and the grain needed by adequate food of human beings, and meanwhile, solves the problems that organic solid wastes are difficult to treat, and energy consumption is high.

Description

Technical field [0001] The invention belongs to the technical field of environmental engineering and solid waste pollution control, and particularly relates to a method for preparing medium-chain fatty acids on hollow fiber membranes by using synthesis gas fermentation. Background technique [0002] Medium-chain fatty acids refer to straight-chain single-molecule carboxylic acids with a number of carbon atoms between 6-10. They are the precursors for the production of chemical fuels and other chemical substances. They have higher energy density and lower water solubility. It can be used simply An effective method of separation without consuming too much energy, and ultimately reducing dependence on petroleum fuels, is an important breakthrough in solving the oil crisis. In summary, the advantages of medium-chain fatty acids mainly include: (1) Simple operating environment; (2) Low energy consumption and low cost consumption; (3) High energy density; (4) Low solubility in water, e...

Claims

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Application Information

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IPC IPC(8): C12P7/40C12M1/00C12M1/34C12M1/04C12R1/145
CPCC12M25/12C12M29/06C12M29/18C12M41/22C12M41/26C12P7/40
Inventor 倪丙杰吴书林孙婧黄琦苏严小芳曾舒婷
Owner TONGJI UNIV
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