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Preparation and treating methods and application of fermentation broth of 1,3-propylene glycol, preparation method for water-soluble fertilizer, and water-soluble fertilizer

A treatment method and technology of fermented liquid, applied in the direction of application, sewage/sludge fertilizer, potash fertilizer, etc., can solve the problems of insufficient environmental protection and thoroughness, and achieve the effects of improving quality, increasing fertilizer efficiency, and reducing use

Active Publication Date: 2017-03-01
ZHANGJIAGANG GLORY CHEM IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the processing method of the fermented liquid in the existing 1,3-propanediol production technology is not environmentally friendly and thorough enough, and provides a preparation method of the fermented liquid of 1,3-propanediol, a kind of 1,3-propanediol Processing method of propylene glycol fermentation liquid, preparation method of a kind of water-soluble fertilizer and water-soluble fertilizer obtained by the method

Method used

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  • Preparation and treating methods and application of fermentation broth of 1,3-propylene glycol, preparation method for water-soluble fertilizer, and water-soluble fertilizer
  • Preparation and treating methods and application of fermentation broth of 1,3-propylene glycol, preparation method for water-soluble fertilizer, and water-soluble fertilizer
  • Preparation and treating methods and application of fermentation broth of 1,3-propylene glycol, preparation method for water-soluble fertilizer, and water-soluble fertilizer

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Experimental program
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Embodiment approach

[0035] According to the present invention, in step 2), the separation method for separating 1,3-propanediol and the solid containing organic acid potassium salt and inorganic salt from the fermentation supernatant can be a conventional choice in the art. For example, concentration, desalting and rectification may be performed in sequence. According to a preferred embodiment of the present invention, the method for separating the fermentation supernatant comprises the following steps: by concentrating the fermentation supernatant, and then feeding it to a scraped film evaporator, obtaining Liquids of 1,3-propanediol and 2,3-butanediol, glycerin and water are obtained from the bottom of the tower as solids containing potassium salts of organic acids and inorganic salts. The liquid containing 1,3-propanediol, 2,3-butanediol, glycerin and water is rectified to obtain 1,3-propanediol.

[0036] In the present invention, the inorganic salt can be nitrogen salt and / or phosphorus salt...

Embodiment 1

[0055] This embodiment is used to illustrate the preparation and processing method and application of the fermentation liquid of 1,3-propanediol provided by the present invention and the preparation method of water-soluble fertilizer and water-soluble fertilizer

[0056] (1-1) Preparation method of fermented liquid of 1,3-propanediol

[0057] Klebsiella pneumoniae (Klebsiella) was inoculated into a fermenter containing a fermentation medium under aseptic conditions for fermentation. The fermentation temperature was 30° C., the stirring speed was 250 rpm, and the ventilation volume was 2.0 VVM. Use potassium hydroxide all (100% by weight) to replace sodium hydroxide to adjust the pH of the fermented liquid to be 6.5, when the concentration of 1,3-propanediol in the fermented liquid no longer rises, stop fermentation, obtain 1,3-propanediol fermented liquid, Its composition is listed in Table 1.

[0058] (1-2) The processing method of 1,3-propanediol fermentation broth

[0059...

Embodiment 2

[0080] This embodiment is used to illustrate the preparation and processing method and application of the fermentation liquid of 1,3-propanediol provided by the present invention and the preparation method of water-soluble fertilizer and water-soluble fertilizer

[0081] (2-1) Preparation method of fermented liquid of 1,3-propanediol

[0082] Klebsiella pneumoniae (Klebsiella) was inoculated into a fermenter containing a fermentation medium under aseptic conditions for fermentation. The fermentation temperature was 37° C., the stirring speed was 150 rpm, and the ventilation volume was 1.0 VVM. Use potassium hydroxide part (potassium hydroxide accounts for 75% by weight of neutralizing agent) to replace sodium hydroxide to adjust the pH of fermented liquid to be 6, when the concentration of 1,3-propanediol no longer rises in the fermented liquid, stop fermentation, obtain 1 , 3-propanediol fermentation broth, its composition is listed in table 5.

[0083] (2-2) The processing ...

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Abstract

The invention discloses a preparation method for fermentation broth of 1,3-propylene glycol, a treating method for the fermentation broth of 1,3-propylene glycol, application of a bacterial degradation supernatant and a solid containing an organic acid potassium salt and an organic acid salt produced by the treating method to preparation of a water-soluble fertilizer, a preparation method for the water-soluble fertilizer, and the water-soluble fertilizer prepared by using the method, belonging to the field of fermentation of 1,3-propylene glycol. The fermentation broth of 1,3-propylene glycol is obtained through microbial fermentation of glycerin; a neutralizer is used for adjusting the pH value of the fermentation broth in the process of fermentation; and the neutralizer contains more than 50 wt% of potassium hydroxide. The treating method comprises a step of treating the fermentation broth of 1,3-propylene glycol. According to the invention, direct or indirect pollution of by-products to environment is eliminated and production cost for the fertilizer is reduced on the basis that microbial fermentation conditions for production of 1,3-propylene glycol are guaranteed.

Description

technical field [0001] The present invention relates to the field of 1,3-propanediol fermentation, in particular, to a preparation method of 1,3-propanediol fermentation broth, a treatment method of 1,3-propanediol fermentation broth, and organic-containing The invention discloses the application of the solid of acid potassium salt and inorganic salt and the degraded liquid of bacteria in the preparation of water-soluble fertilizer, a preparation method of water-soluble fertilizer and the water-soluble fertilizer obtained by the method. Background technique [0002] 1,3-propanediol (1,3-propanediol) is an important chemical raw material, which can be used in industries such as materials, solvents, lubricants and antifreeze agents, especially in the material industry, 1,3-propanediol can be used to synthesize polymers Propylene Terephthalate (PTT). PTT is a biodegradable polyester material with excellent performance. It has good ductility and washability. It has broad applic...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05F7/00C05G3/80
CPCC05D1/00C05F7/00C05G3/80C05F11/08Y02A40/20
Inventor 韩冰陶春平
Owner ZHANGJIAGANG GLORY CHEM IND CO LTD
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