8results about How to "Improve acid production efficiency" patented technology

The invention discloses a method for realizing high-efficiency low-consumption micro-aerobic hydrolytic acidification of petrochemical wastewater by regulating and controlling the aeration rate in combination with a space-time diagram neural network and reinforced learning, and relates to a method for realizing high-efficiency low-consumption micro-aerobic hydrolytic acidification of petrochemical wastewater by regulating and controlling the aeration rate. The method comprises the following steps of: 1, collecting and cleaning data; 2, constructing a graph data set; 3, training the ST-GNN model; 4, constructing a deep Q reinforcement learning model; 5, the trained ST-GNN model is embedded into an automatic control system of a sewage treatment plant, and the model outputs the optimal aeration rate of the current time step and predicts the micro-aerobic hydrolytic acidification effect through interaction of the current working condition and historical data; and adjusting operation parameters of aeration equipment according to the output of the model, and carrying out hydrolytic acidification treatment. The method is high in regulation and control efficiency and low in operation error, and can be applied to the field of digital and intelligent management of sewage treatment plants.

The invention discloses a preparation method of a photoacid generator for a semiconductor photoresist, which comprises the following specific steps: firstly, treating raw materials by using anion exchange resin to obtain triphenyl sulfur tetrafluorobutanol sulfonic acid onium salt; organic acid and organic acid anhydride are adopted as esterification reagents, esterification reaction is carried out on the esterification reagents and adamantanecarboxylic acid under mild conditions, and ((triphenylsulfonium, adamantane-1-carbonyl) oxy)-tetrafluorobutyl sulfonate and the derivative thereof are synthesized. The invention provides the efficient, economic and environment-friendly preparation method of the photoacid generator, the product has efficient acid production efficiency, the raw materials are wide in source and low in price, and the production cost is reduced; reaction conditions are mild, extreme conditions such as high temperature and high pressure are avoided, and production safety is improved; the esterification process is stable and controllable, and high quality and yield of the product are ensured; meanwhile, the selected esterification reagent has good solubility with water, removal in the subsequent treatment process is facilitated, and the production process is simplified.

The invention belongs to the technical field of microorganisms, and discloses a production strain screening and production method of L-serine, which comprises the following steps: adding quantitative ectoine and L-serine into a screening culture medium to screen out a strain capable of tolerating and producing L-serine at high yield; and then adding ectoine while adding an inducer L-arabinose during fermentation, so that the content of L-serine in the fermentation liquor is remarkably increased. The method is simple, the screened high-yield strain is high in stability, the yield of L-serine produced through fermentation is high, and the method is suitable for large-scale industrial production.

The invention belongs to the technical field of biochemistry, and particularly relates to a microorganism-surfactant solution and a method for producing lactic acid and acetic acid. The invention provides a microorganism-surfactant solution. The microorganism-surfactant solution comprises microorganisms and a surfactant, the microorganisms comprise cellulose degrading bacteria and / or lactic acid bacteria; the surfactant comprises alkyl glycoside; the mass ratio of the microorganisms to the surfactant is 1: 1. Wherein the lactic acid bacteria generate lactic acid in the anaerobic fermentation system, and the cellulose degrading bacteria generate acetic acid. The surface active agent can obviously reduce the surface tension of liquid of a fermentation system, so that microbial cells are easier to contact with fermentation raw materials, and the fermentation efficiency is improved. The invention provides a method for synchronously and directionally producing lactic acid and acetic acid by using a solution, which adopts variable-temperature gradient regulation and distillation in the anaerobic fermentation process to realize directional efficient synthesis of lactic acid and acetic acid and improve the acid production efficiency.

The present invention discloses an efficient immobilized propionic acid continuous fermentation system, and relates to the technical field of microbial fermentation, the system comprises: a fermentation tank main body, in which propionibacterium immobilization units containing porous ceramic carriers and chitosan alginic acid composite anchoring layers are detachably and circumferentially distributed; the material supplementing unit is connected with the tank top and comprises a raw material storage tank, a pretreatment cavity, a filter screen, a buffer cavity and a flow metering pump; the circulating pipeline is connected with two ends of the tank, is provided with a circulating pump and is internally provided with a membrane separation unit of an ultrafiltration membrane assembly; the temperature control unit consists of a jacket outside the tank and a temperature sensor inside the tank; the pH adjusting unit comprises an acid-base storage tank, a metering pump and an in-tank pH sensor; the tank is internally connected with an aeration unit of an external air source, and the bottom of the tank is provided with a blow-off unit of a blow-off pipeline with a stop valve; by constructing the propionibacterium immobilization unit combining the porous ceramic carrier and the chitosan alginic acid composite anchoring layer, the problems of low cell density and easy loss of strains in traditional propionic acid fermentation are effectively solved.

The application discloses a sludge anaerobic acid production strengthening method based on synergistic degradation of melanoid-like substances by thermal hydrolysis and potassium permanganate, which comprises the following steps: (1) screening and removing impurities from sludge, and then performing gravity sedimentation and concentration; (2) thermal hydrolysis treatment: high-temperature and high-pressure treatment, pressure relief and cooling; (3) adding potassium permanganate for oxidation, and combining with ultrasonic dispersion; (4) anaerobic fermentation: inoculating active sludge, and controlling fermentation conditions; and (5) separating and extracting short-chain fatty acids. The application realizes the synergistic effect of thermal hydrolysis and potassium permanganate, targets the degradation of melanoid-like substances generated in the thermal hydrolysis process, eliminates the inhibition of the melanoid-like substances on anaerobic microorganisms, and promotes the efficient dissolution of organic matters in sludge. The nano manganese dioxide generated by potassium permanganate oxidation serves as an electron transfer medium, further strengthens the metabolic activity of acid-producing bacteria, and the pickling recovery rate is greater than or equal to 90%. The method makes the yield of short-chain fatty acids increase by 65% (up to 456 mg / g VS), has high efficiency and environmental protection, and provides an innovative solution for sludge resource treatment.

The utility model provides smelting flue gas acid making equipment which comprises a base, the top of the base is fixedly connected with a heating tower, the left side of the top of the heating tower is fixedly connected with a gas inlet pipeline, the left side of the gas inlet pipeline is fixedly connected with a butt joint pipe, and the interior of the butt joint pipe is fixedly connected with a first filter plate. A waste heat recovery assembly is arranged on the right side of the air inlet pipeline, a spraying tower is fixedly connected to the middle side of the top of the base, a suction pump is installed on the top of the spraying tower, a conveying pipe is fixedly connected to the output end of the suction pump, and a rotating frame is rotationally connected to the bottom of the conveying pipe. According to the utility model, the suction pump is used for sucking the desulfurization liquid, so that the fan blades can be driven to rotate, at the moment, the spray head can rotate, the maximum-area contact between the desulfurization liquid and the flue gas can be realized, and the desulfurization efficiency and the acid making efficiency can be greatly improved.

This invention provides an L-homoserine-producing strain, its construction method, and its applications. The strain does not contain plasmids. E.coli W3110, as a chassis strain, had the relA and thrB genes knocked out, and heterologously expressed genes derived from... Clostridium acetobutylicum The gapC gene and the aspB gene derived from Bacillus subtilis were overexpressed, along with ppc, asd, and thrA. fbr ,rhtA,pntAB,spoT fbr Genes; the strain described above can effectively improve the L-homoserine synthesis efficiency by knocking out genes of the L-homoserine degradation pathway, enhancing the expression of key enzymes in the pathway, optimizing the L-homoserine transport system, increasing the reducing power NADPH content, and enhancing the ability to withstand amino acid starvation. It is genetically stable, requires no addition of resistance substances, has high acid production efficiency, and has good L-homoserine synthesis capacity.