Method and equipment for separating volatile organic matters from fermentation product in situ

A volatile, in-situ separation technology, used in separation methods, biochemical equipment and methods, distillation separation, etc. Separation Efficiency, Reduced Treatment Costs, and Effect of Reducing Separation Costs

Inactive Publication Date: 2013-04-17
青岛生物能源与过程研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent 200710062809 discloses a CO 2 The method and equipment for the preparation of ethanol are coupled with online separation of circulating gas stripping. The gas stripping product is designed with multiple online separation devices such as gas-liquid separation, adsorption separation, and solvent absorption. Because the efficiency of gas stripping itself is low, the energy consumption of the online separation device larger
Chinese patent 95243392 discloses a volatile organic compound gas stripping device, which integrates gas stripping-dehydration-capturing as a whole, but there is also the above-mentioned problem of high energy consumption in the separation of gas stripping products

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  • Method and equipment for separating volatile organic matters from fermentation product in situ

Examples

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Embodiment 1

[0026] Example 1: Using starch as raw material for CO 2 and H 2 Preparation of Butanol-Acetone-Ethanol (ABE) by Mixed Gas Circulation Stripping / Steam Permeation In-Situ Separation Coupling Process

[0027] The starch raw material enters the fermentation process through liquefaction and saccharification. according to figure 1 Assemble equipment, adopt 2L fermentation tank, inoculate according to 5% (v / v) inoculum amount, make the culture volume of fermentation tank be 1L, fermentation temperature is controlled at 37 ℃, stirring speed 150r / min. When the fermentation is carried out to 20 hours (h), the concentration of butanol in the fermentation broth is 4-5g / l, the stirring is turned off, and the inert gas CO 2 and H 2 mixed gas (or CO 2 or N 2 ) to start air stripping, the ventilation rate is 3000ml / min. The mixed gas from the fermenter enters the steam permeation device, the temperature of the steam permeation device is controlled at 37°C, and the other side of the ste...

Embodiment 2

[0028] Example 2: Using starch as raw material for CO 2 Production of Ethanol by Circulating Gas Stripping / Steam Permeation In-Situ Separation Coupling Process

[0029] The starch raw material enters the fermentation process through liquefaction and saccharification process, according to figure 1 Assemble equipment, adopt 2L fermentation tank, inoculate according to 5% (v / v) inoculum amount, make the culture volume of fermentation tank be 1L, fermentation temperature is controlled at 35 ℃, stirring speed 150r / min. Fermentation is carried out to 24 o'clock, the concentration of ethanol in the fermented liquid is 70g / l, close stirring, feed inert gas CO 2 Start gas stripping, the ventilation rate is 3000ml / min. The mixed gas from the fermenter enters the steam permeation device, the temperature of the steam permeation device is controlled at 35°C, and the other side of the steam permeation device is filled with CO 2 Purge and dehydrate. The gas dehydrated by steam permeation...

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Abstract

The invention discloses a method and equipment for separating volatile organic matters from a fermented product. In the method, in-situ separation of the volatile organic matters is realized by coupling fermentation with a gas stripping / vapor permeation process. The method and the equipment are characterized in that: inert gas is introduced from a gas distributor at the bottom of a fermentation tank; in-situ gas is extracted from the volatile organic matters and enters a vapor permeation device so as to separate water from the organic matters; dehydrated mixed gas enters a condenser to recycle the volatile organic matters; and non-condensable gas and a water vapor component containing a small number of organic matters can be recycled. The method and the equipment have the advantages of eliminating product inhibition, enhancing fermentation intensity, saving water and reducing energy consumption along with high in-situ movement efficiency of the volatile organic matters in a fermentation process. The volatile organic matters in the invention comprise ethanol, propanol, acetone, butanol and the like.

Description

technical field [0001] The invention belongs to the technical field of biochemical industry, and in particular relates to a method and equipment for producing volatile organic compounds (ethanol, propanol, acetone, butanol) through circulating air lift / steam permeation in-situ separation coupled fermentation. Background technique [0002] Ethanol, propanol, acetone, butanol and other volatile organic compounds are important organic chemical raw materials and solvents. In recent years, due to the continuous rise of crude oil prices, climate warming, energy crisis, etc., the production of ethanol, propanol, acetone, butanol and other chemicals by fermentation as biofuels and bio-based chemicals has become more and more popular. Pay attention to. In particular, the two largest industrial microbial fermentation processes, ethanol and butanol fermentation. Ethanol and butanol can be used as gasoline, and have the advantages of renewable and clean combustion. From the perspectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/74B01D3/00B01D5/00B01D53/22C12M1/00
CPCY02E50/343C12M21/12C12M47/10C12M47/18Y02E50/30
Inventor 马玉久杨华侯同刚
Owner 青岛生物能源与过程研究所
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