Hubei University of Technology

Handan Puxin Electric Power Technology Co., Ltd.

Other

Electric Power Research Institute, China Southern Power Grid

Wuhan Grand Hoyo Co., Ltd.

Kun Wan

Jing Li

Xiaoxing Zhang

Shuangshuang Tian

Yalong Li

Guozhi Zhang

Xuechen Mei

Zhaodi Yang

Guoguang Zhang

Guangke Li

Aifu Liu

Haixia Su

Panpan Xing

Mengjun Song

Jiong Wang

Mingli Fu

Lei Jia

Yin Zhang

Yunjian Wu

Dibo Wang

Disclosed are a tungsten hexafluoride preparation method and apparatus based on photoelectric synergy. A photocatalyst and metal tungsten are sequentially filled in a discharge area of a plasma reactor in a direction of gas entry, and the discharge area of the plasma reactor is irradiated with light at the same time; the background gas generates a large amount of plasma in the discharge area, SFundergoes decomposition under the synergistic effect of photocatalysis and plasma, SFis decomposed to generate fluorine atoms and low-fluorine sulfides such as SFand SF. The generated fluorine ions, SF, SFand low-fluorine sulfides further react with metal tungsten to generate WFspecialty gas, which not only realizes the utilization of fluorine resources of SF, but also replaces highly toxic fluorine gas with non-toxic SFexhaust gas in the plasma reactor for reaction, thereby ensuring safe operation and low energy consumption.

Tungsten hexafluoride preparation method and apparatus based on photoelectric synergy

A method and a device for preparing MoFbased on plasma activation of SF. The method includes the following steps: S1, filling a discharge area of a plasma reactor with molybdenum powder; S2, introducing an inert gas and an SFgas into the discharge area of the plasma reactor, where the inert gas is ionized into plasma, and the SFgas is ionized into fluorine atoms and low-fluorine sulfides after being activated by the plasma; and S3, generating an MoFgas and sulfur elements through reaction of the fluorine atoms and the low-fluorine sulfides with the molybdenum powder.

Method for preparing MoFbased on plasma activation of SF

Provided is a method for screening aconstitutive expression vector promoter on the basis of transcriptome sequencing; and further provided are theconstitutive expression vector promoter screened on the basis of transcriptome sequencing, an expression vector comprising the promoter, a recombination strain obtained by transforming a host cellusing the expression vector, and applications thereof.

constitutive expression vector promoter screened on the basis of transcriptome sequencing, screening method thereof, and applications thereof

Disclosed is a L-isoleucine-producingfermentation medium, comprising a basal medium and a growth factor, wherein the growth factor consists of choline, betaine and vitamin B6, and the contents of each ingredient in the fermentation medium are: 0.2-1 g/L choline, 0.25-0.5 mg/L betaine, and 0.05-0.3 mg/L vitamin B6. Also disclosed is a method for cultivating the L-isoleucine-producing, comprising: inoculating the L-isoleucine-producingonto the fermentation medium, wherein the volume of the bacteria liquid accounts for 5-20% of the volume of the fermentation medium, adjusting the pH to 6.5-7 with aqueous ammonia, controlling the dissolved oxygen to 30-50%, and fermenting for 25-30 h; then decreasing the dissolved oxygen to 15-25%, and feeding a 50-80% glucose solution into the fermentation broth to control the residual sugar at 3-4%, continuing the fermentation until 60-70 hours, then terminating the fermentation, and controlling the temperature of the overall fermentation process at 29-33&#xb0; C.

L-isoleucine-producing corynebacterium glutamicum fermentation medium and culture method

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Wuhan, China

Kun Wan