47 results about "Acid production" patented technology

The application discloses a preparation method of yellow rice wine, the yellow rice wine and application. The preparation method of the yellow rice wine comprises the following steps: gelatinizing starch raw materials to prepare gelatinized starch; uniformly mixing the gelatinized starch, yellow rice wine starter, acidic protease, saccharomyces cerevisiae, yellow rice wine and water to prepare fermentation material, and performing fermentation; adding lactic acid bacteria at 72h-74h of fermentation, and continuing fermentation; and performing solid-liquid separation after the fermentation is completed, collecting clear liquid, decocting wine, aging, and preparing the yellow rice wine. The preparation method of the yellow rice wine breaks through the technical bottleneck that the metabolic time sequence of strains is uncontrollable in traditional mixed fermentation, optimizes the inoculation time of lactic acid bacteria, guarantees the acid production capacity of lactic acid bacteria under the condition of controlling alcohol metabolism, and obtains the yellow rice wine with the characteristics of high sugar, high acid and high ester, which can be used for seasoning.

The present application relates to a kind of dry method for viscose fiber factory waste gas recovery, including the following sequentially performed steps: (1) waste gas incineration;(2) purification;(3) deacidification mist;(4) drying;(5) sulfur combustion;(6) high temperature furnace gas B is imported into the acid making device to obtain finished product concentrated sulfuric acid.The present application overcomes the shortcomings of existing viscose factory waste gas acid making process equipment, such as easy to be corroded, frequent shutdown, difficult to maintain, low acid production, easy to escape sulfur waste gas, easy to mix furnace gas and external air, low economic benefit, complex process, and many by-products, etc.By adding liquid sulfur mixed combustion, controlling the temperature of each step, setting a booster fan in the front section of the drying tower, a main fan in the rear section, and reasonably arranging the inlet positions of furnace gas and external air, the present application has the advantages of simple process, large-scale acid production, no sulfur waste gas escaping, more environmentally friendly, no mixing of furnace gas and external air, high economic benefit, few by-products, and low maintenance cost.

The utility model discloses a micro -channel reactor for chloropropionic acid production belongs to chemical production equipment technical field, including cooling temperature control water tank, the inner wall fixedly connected with equidistance arrangement's micro -channel pipeline of cooling temperature control water tank, the outer surface of every micro -channel pipeline all fixedly communicated with the convex pipe, the outer surface of every micro -channel pipeline all fixedly communicated with the installation turbulence cylinder, the inside of every installation turbulence cylinder all rotatoryly connected with turbulence helical fan blade, the outer surface of every group turbulence helical fan blade all fixedly connected with equidistance circumferential arrangement's limit mobile link. The micro -channel reactor for chloropropionic acid production, through setting up micro -channel pipeline, convex pipe, waterproof solenoid valve and the cooperation of water jet pipe, the flow rate of raw materials is changed to facilitate the mixing of raw materials in micro -channel pipeline, and then the cooperation of cooling temperature control water tank, circulating water pump, connecting pipe and refrigerator is utilized, and the reaction temperature is accurately controlled, the occurrence of side reaction is effectively reduced, and the service life and operating efficiency of the equipment are improved.

The application discloses a strain of Staphylococcus carnosus and application of the strain in improving sour taste of soy sauce, and belongs to the technical field of food fermentation. The Staphylococcus carnosus CS1.21 is first isolated from soy sauce mash, and has the characteristics of salt tolerance, strong acid production, ester production and bacteriostasis. The strain is used for fermenting high-salt dilute soy sauce, and can effectively produce lactic acid, acetic acid and succinic acid, and the production of lactic acid, acetic acid and succinic acid is respectively increased by 28.13%, 27.78% and 50.00% compared to the soy sauce without adding the CS1.21. Meanwhile, the accumulation of ester substances is promoted, and the content of the ester substances is increased by 86.23% compared to the soy sauce without adding the CS1.21, wherein the content of ethyl lactate and ethyl acetate is respectively increased by 70.11% and 85.76%. The addition of the Staphylococcus carnosus CS1.21 is beneficial to improving the sour taste of the soy sauce, and can improve the quality and flavor of the soy sauce without adding preservatives.

The utility model discloses a kind of mixed reaction devices for aminosulfonic acid production belong to aminosulfonic acid technical field, including fixed plate, the top of the fixed plate is equipped with cylinder, the bottom surface of the cylinder is inlaid with mixing mechanism, the outer surface of the cylinder is connected with a group of support rods, the bottom surface of each support rod is connected with the upper surface of fixed plate. Through the design of motor and connecting rod, it is convenient for connecting rod to rotate, while driving the rotation of mixing plate, while mixing and stirring the raw materials inside the cylinder using the mixing plate, at this time, through the cooperation of dispersion plate and mixing plate, it is convenient for raw material mixing and dispersion, while being beneficial to uniform mixing of raw materials, and then it is convenient to speed up its mixing and reaction speed, using the design of fan, control valve and straw, it is convenient to suck the gas inside the cylinder, and it is convenient for gas discharge to the inside of box, while being beneficial to the treatment and discharge of gas by multiple filter elements, thereby reducing the influence of gas on surrounding environment.

This invention provides an itaconic acid-producing strain, its construction method, and its application. E.coli W3110, as the chassis strain, upregulated the gltA, acnA, ACS, and gatA genes, knocked out the aceA and Pta genes, downregulated the transcription level of the icd gene using the BBa_J23115 promoter, and carried the high-copy plasmid PET-28a-WAL. The plasmid was used with the T7 promoter to overexpress a gene derived from... Aspergillus terreus The strain constructed using the CAD1 gene exhibits excellent itaconic acid synthesis capabilities and stable performance. It can efficiently and stably synthesize itaconic acid de novo using glucose as a carbon source through fermentation, with low production costs and high acid production efficiency, thus achieving efficient itaconic acid production and showing excellent prospects for industrial applications.

The utility model discloses a crosslinked sodium glass acid production device's flow guide structure relates to crosslinked sodium glass acid production technical field, including stirring drum and crushing box, the feeding pipe of stirring drum top intercommunication, still include filter assembly, filter assembly includes the filter screen of setting in the crushing box inside, and the fixed link is connected between filter screen and the inner wall of crushing box, is provided with the casing on the one side of fixed link of crushing box, is provided with motor in the casing and the output of fixed link is connected with motor, and vibration subassembly, vibration subassembly includes the limiting board of setting in the crushing box, is provided with the chute on the one side of limiting board of crushing box, and limiting board is connected on the chute and slides, through setting vibration subassembly, make filter screen produce tiny amplitude through high frequency vibration, avoid granular object and form compact accumulation layer on the net face.

This invention provides a method for producing superphosphate, its application, and the co-production of superphosphate from phosphogypsum using sulfuric acid, relating to the field of chemical synthesis technology. The method includes the following steps: drying and sieving phosphogypsum to obtain a sample; mixing the sample with a composite catalyst and a calcium regulator to obtain a mixture; decomposing the mixture at high temperature to obtain a highly active calcium-based intermediate and high-temperature flue gas; separating and purifying the highly active calcium-based intermediate, recovering the composite catalyst, obtaining the separated and purified calcium-based intermediate, and recycling the recovered composite catalyst back to the previous step; mixing the highly active calcium-based intermediate with phosphate rock powder to prepare a solid mixture; mixing the solid mixture with the aforementioned mixed acid solution, heating the mixture, and then stacking it for 40-50 hours to obtain superphosphate. This invention, through method improvements, results in a superphosphate fertilizer with high available phosphorus content and good physical properties; simultaneously, the generated sulfuric acid product has high purity.

The application relates to a sulfur foam acid production pretreatment system and a pretreatment method, and belongs to the field of industrial acid production. The system comprises, in sequence, a demulsification stirring tank, a hot melt separation device, an evaporation crystallization device, a drying device and a sulfur particle granulator. The hot melt separation device comprises a hot melt shell, a heat supply unit and a stirring unit. A feeding port is arranged at the top of the hot melt shell. The demulsification stirring tank is communicated with the feeding port. An overflow port and a discharge port are sequentially arranged on the side wall of the hot melt shell from top to bottom. Sealing doors and first valves are arranged at the overflow port and the discharge port respectively. The evaporation crystallization device is communicated with the discharge port. The heat supply unit is arranged on the hot melt shell. The stirring unit is arranged in the hot melt shell. The stirring unit is used for stirring sulfur foam in the hot melt shell. The application has the technical effects that the sulfur foam treatment system is simple and convenient to operate.

The present invention relates to a method for high production of heparic acid using a recombinant E. coli strain and to the heparic acid produced thereby. The E. coli strain according to the present invention has the advantage of efficiently increasing the flux of the entire heparic acid biosynthetic pathway through the optimization of the dual plasmid system, promoter combination, and culture medium, thereby increasing the heparic acid production compared to the wild-type strain and enabling the securing of high-purity heparic acid even through a simple purification process.

The present application relates to the field of food fermentation, and particularly relates to a process for producing fermented peppers by sectional fermentation, and specific steps of the process are as follows: step S1: the peppers are placed in a freezer, put into a crusher, stirred, passed through an 8-12 mm sieve plate, and then placed in a separator, passed through a sieve, to obtain seed residues and pepper pulp; the present application separates the seed residues and the pulp after freezing the peppers, and performs compound protease enzymolysis treatment on the seed residues, effectively releasing the protein and flavor precursor substances in the seed residues, significantly improving the amino acid nitrogen content and sauce flavor intensity of the fermented peppers; meanwhile, the sectional salt addition and sectional temperature control fermentation strategies are adopted, low salt is added first to promote the rapid start of microorganisms to produce acid, and then salt is added to regulate the metabolism of the microbial population, which not only inhibits the contamination of miscellaneous bacteria, but also avoids the continuous inhibition of the fermentation activity in a high-salt environment, greatly shortening the fermentation period.

The utility model relates to drying device technical field discloses a kind of 2-chloronicotinic acid production material drying device, including hot air machine and containing vessel, the left side of hot air machine is fixedly connected with connecting pipe, the upper side of connecting pipe is provided with vibration component, the upper side of connecting pipe is fixedly connected in the downside of containing vessel, the downside of containing vessel is fixedly connected with support frame, the left side of containing vessel is rotatably connected with rotating door, the left side of rotating door is provided with concave handle, the upper side of containing vessel is fixedly connected with motor, the rotating end of motor is fixedly connected with stirring shaft, the outer wall of stirring shaft is fixedly connected with stirring vane, the right side of containing vessel upper end is fixedly connected with inlet port. In the utility model, on material processing, fan drives rotating ring to make carrier plate vibrate, prevent material to be bottomed and be concreted;On filter screen maintenance, realize filter screen frame convenient loading and unloading by limiting design, guarantee exhaust efficiency and safety.

This invention discloses the application of L-tryptophan in the preparation of anti-caries oral care products, belonging to the field of biomedical technology. Addressing the safety issues, oral microecological disruption, and susceptibility to drug resistance associated with existing anti-caries agents (such as fluoride and chlorhexidine), this invention proposes using L-tryptophan as the effective active ingredient in anti-caries agents. Utilizing the specific effects of L-tryptophan on *Streptococcus mutans*, it achieves the effects of inhibiting tooth decay, maintaining oral microecological balance, and reducing the risk of bacterial drug resistance. This specific effect, without affecting the survival of *Streptococcus mutans*, simultaneously inhibits the synthesis of water-insoluble extracellular polysaccharides, inhibits acid production and acid tolerance, and inhibits oxygen tolerance and interspecies competition. It is characterized by its clear efficacy and high safety.

This invention discloses a method for cooling circulating acid in a dry acid production process, comprising the following steps: (1) the circulating acid in the cooling tower is drawn out by an external circulating acid pump and sequentially enters a primary plate heat exchanger and a secondary plate heat exchanger, and after cooling, returns to the top spray system of the cooling tower; (2) the circulating liquid in the tail gas absorption tower is drawn out by an external circulating pump and enters the primary plate heat exchanger to exchange heat with the circulating acid in the cooling tower, and after heating, returns to the top spray system of the tail gas absorption tower; the secondary plate heat exchanger uses circulating water for cooling. This invention utilizes a lower temperature circulating absorbent liquid as the cooling medium of the primary plate heat exchanger, removing the heat of the circulating dilute acid in the purification cooling and washing system, thereby greatly reducing the consumption of circulating water, while recovering part of the cooling energy of the circulating absorbent liquid.

The application discloses an anaerobic acid-producing device for kitchen garbage suitable for engineering application and relates to the technical field of garbage treatment. The anaerobic acid-producing device for kitchen garbage suitable for engineering application comprises a rigid pressure-bearing outer cylinder, a feeding port, a multi-parameter sensor integrated seat, a feeding pipe, a conical bulk material cap and a residue discharge screw conveyor, and the inside of the rigid pressure-bearing outer cylinder is provided with a flexible shearing assembly and a capsule driving assembly. The flexible shearing assembly and the capsule driving assembly are matched to facilitate continuous rubbing, dispersing and forward dredging of the heterogeneous impurities mixed in the kitchen garbage, avoid the accumulation of the impurities on the inner wall of the feeding tank, eliminate the risk of feeding interruption and feeding quantity fluctuation, adapt to the working condition requirements of engineering 24-hour continuous feeding, continuously scatter the high solid content materials in groups, improve the contact efficiency of the organic matter in the kitchen garbage and acid-producing bacteria, and further improve the treatment efficiency of anaerobic acid production.

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.

This invention discloses an acid-tolerant Pichia pastoris and its application in succinic acid fermentation, belonging to the field of microbial breeding and fermentation engineering. Firstly, using Pichia pastoris GS115 as the starting strain, this invention constructs an engineered succinic acid-producing strain, GS115-SH, through metabolic engineering. To address the problem of inhibited growth and low succinic acid synthesis efficiency in this strain under acidic conditions, an acidic gradient stress environment from pH 3.8 to pH 3.0 was constructed by progressively lowering the pH of the culture medium using hydrochloric acid. Through continuous subculturing, the bacterial community adapted and solidified under low pH conditions, ultimately resulting in an acid-tolerant acclimatized strain. This strain achieved stable growth at pH 3.0 using glucose as the sole carbon source, with succinic acid production approximately 1.9 times higher than the starting strain; it also exhibited significant acid-producing capacity even without the addition of neutralizing agents such as CaCO3 or NaOH. This invention effectively reduces the amount of neutralizing agent used and simplifies the post-processing procedure, showing promising prospects for industrial application.

The application belongs to the technical field of fermentation, and particularly relates to a method for producing medium and long chain dibasic acid by fermentation, which comprises the following steps: fermenting Candida, adding a fermentation substrate to perform fermentation, continuously adding carbon source and nitrogen source into the fermentation system when the fermentation lasts for 30-60 hours, and controlling the C / N ratio of the added carbon source and nitrogen source to be (20-30):1; the fermentation substrate is selected from any one or a combination of several of fatty acids with 9-11 carbon atoms, fatty acid esters, fatty acid salts or alkanes. By regulating the carbon-nitrogen ratio in the fermentation process, the application can not only promote the growth of the bacteria and ensure the stable activity of the bacteria, but also make the substrate be as much as possible and efficiently converted into medium and long chain dibasic acid, significantly improve the acid production of the target chain length dibasic acid, and has the potential for industrial scale production.

This invention belongs to the field of metallurgical technology and discloses a method for the comprehensive recycling and utilization of electro-fogging slag from acid production. The method includes the following steps: S1. Slurrying: Electro-fogging slag, mercury-containing crude selenium, and concentrated sulfuric acid are mixed and slurried to obtain a slurry material; S2. Primary acid roasting: The slurry material is fed into a roasting furnace for roasting at a temperature of 220-320℃ for 20-60 h, with a negative pressure of 0--50 Pa inside the furnace during the roasting process; primary roasting slag is obtained; selenium dioxide is recovered through sedimentation of the roasting flue gas; S3. Secondary roasting: The primary roasting slag is roasted again at a temperature of 340-440℃ for 3-10 h, with a negative pressure of -50--200 Pa inside the furnace during the roasting process; secondary roasting slag is obtained; mercury-containing crude selenium is recovered from the roasting flue gas. This invention achieves effective separation and efficient recovery of selenium and mercury, and also recovers valuable metals such as selenium, mercury, lead, gold, and silver in stages.

The utility model discloses a kind of production sulphuric acid with fluidized bed furnace, including the fluidized bed furnace body fixed on mounting bracket, fluidized bed furnace body is sequentially equipped with boiling chamber and calcining chamber from bottom to top, the top of calcining chamber is fixed with expansion cavity, the top of expansion cavity is fixed with flue, expansion cavity includes inverted conical cavity and cylindrical cavity connected in sequence, the inner wall of inverted conical cavity is annularly fixed with multiple flow guide ribs, the flow guide rib is set along the axial extension of inverted conical cavity, the utility model expands volume by expansion cavity, significantly prolongs flue gas residence time, makes sulfur dioxide conversion rate improve, directly improves sulphuric acid production, and the setting of flow guide rib effectively inhibits vortex formation, makes flue gas flow resistance reduce, reduces equipment energy consumption, avoid local airflow scouring caused furnace wall abrasion simultaneously, prolong equipment service life.

The utility model discloses a kind of pyrite acid-making system cooling tower with spraying device, it is related to cooling tower technical field.The utility model includes at least one spraying part, the spraying part includes spraying cylinder and spraying assembly, the spraying assembly is set in spraying cylinder, it includes cross pipe and multiple spraying pipes, multiple the spraying pipe is evenly set in the bottom of cross pipe and is fixedly connected with cross pipe, the spraying assembly is used to provide spraying to the connection cavity inside and below spraying part.It is ensured that the spraying uniformity and stability in the utility model, the cooling efficiency is significantly improved by water flow driving spraying pipe horizontal rotation, forming annular track self-adapting rotary spraying mechanism;By using modularization installation part design, using the selection use of first installation cylinder and second installation cylinder, gas-liquid double operating condition demand can be adapted, equipment versatility is enhanced, while optimizing energy consumption, maintenance cost is reduced, efficient cooling and resource intensification operation are realized.

The present application relates to the field of water pollution control and treatment technology, and discloses a kind of contaminated water purification's synergistic bioremediation process, comprising: collecting the real-time oxidation-reduction potential of water to be treated and real-time water temperature, using real-time water temperature to compensate potential decay rate to establish metabolic intensity reference value, calculate potential time sequence second-order change rate to identify electron transfer acceleration characteristics, monitor change rate negative peak, and when the deviation of negative peak and metabolic intensity reference value exceeds threshold, start time sequence non-uniform pulsed microbubble aeration, synchronously add electron acceptor, the present application uses the potential gradient formed in aeration moment to drive special degrading bacterial group to directional oxidation of metabolic product formed in acid production stage, selectively inhibit indigenous heterotrophic bacterial group proliferation by potential time sequence rebound, effectively guarantee the colonization advantage and succession stability of remediation bacterial group in open environment.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for treating and recycling high-ammonia nitrogen wastewater generated by flue gas desulfurization, denitrification, and acid production systems. This invention organically combines stripping, chemical treatment, membrane technology, and energy-saving resource recovery processes to form a complete solution for the treatment and recycling of high-ammonia nitrogen wastewater, offering comprehensive advantages such as good denitrification effect, high treatment efficiency, high resource recovery rate, environmental friendliness, and low operating costs.

This invention relates to the field of flue gas denitrification and environmental protection technology, and discloses a combined acid production and denitrification treatment system and method. The system includes an acid production unit, a denitrification device, and a third heat exchanger. The acid production unit comprises a first heat exchanger, a second heat exchanger, a purification device, a drying device, a conversion device, and an absorption device connected sequentially along the process gas delivery pipeline. Process gas containing sulfur dioxide is treated by the acid production unit, and sulfuric acid is produced in the absorption device, while acid production tail gas containing nitrogen oxides is discharged. The acid production tail gas from the absorption device first enters the third heat exchanger for a primary heat exchange with the denitrified tail gas from the denitrification device, then enters the second heat exchanger for a secondary heat exchange with the process gas from the first heat exchanger, and finally enters the denitrification device for a denitrification reaction. This system meets the requirements for low-concentration nitrogen oxide emissions without increasing the energy consumption of the equipment.

The present application relates to a kind of kiln gas double-flow lifting gypsum acid-making SO2 concentration method and system, kiln gas double-flow lifting gypsum acid-making SO2 concentration method includes the following steps: by preparing raw material by gypsum, reducing agent, correction material;Part of calcium sulfate in it is reduced to primary solid phase material and primary kiln gas, and primary kiln gas is sent into tail gas treatment device after preheating raw material via suspension preheater;Primary solid phase material is made into secondary solid phase material and secondary kiln gas after decomposition reaction, sintering reaction;Kiln gas double-flow lifting gypsum acid-making SO2 concentration system includes suspension preheater, reduction kiln and decomposition sintering kiln, reduction kiln is equipped with first gas phase outlet, and decomposition sintering kiln is equipped with second gas phase outlet, first gas phase outlet is connected with suspension preheater and tail gas treatment device in series, and second gas phase outlet is connected with waste heat recovery device and acid-making system in series.The technical scheme of the present application, primary kiln gas is discharged outside acid-making system alone, and the concentration of SO2 in secondary kiln gas is greatly improved.

This invention belongs to the field of food fermentation and functional beverage technology, specifically relating to a strain of *Lactobacillus fermentans* and its application in the preparation of fermented goji berry juice that enhances immunity. The *Lactobacillus fermentans* strain LFY21 was deposited on November 17, 2025, at the China Center for Type Culture Collection (CCTCC), with accession number CCTCC NO: M 20252569; the deposit address is Wuhan University. This strain grows vigorously in goji berry juice, but exhibits weak acid production during fermentation, resulting in a high sugar-acid ratio, good flavor and palatability, and high free radical scavenging activity and total phenol content. Furthermore, animal experiments have demonstrated that fermented goji berry juice prepared with this strain can effectively enhance immune function, showing potential as an immune enhancer.

The utility model discloses a reaction unit for leucic acid production relates to leucic acid production device technical field. Including base, the both sides top wall of base all are fixed with the stand, and the clamping cavity of two stands is provided with jar body, and the both sides wall of jar body all are fixed with hollow shaft, and two hollow shafts are rotatoryly connected between two sides'stand respectively, and the top of base is provided with the rotating lever, and the stem of rotating lever penetrates the inner chamber of jar body and the axle body of hollow shaft, and rotatoryly connected between rotating lever and the axle body inner wall of hollow shaft, and the top of base is provided with transmission mechanism. The utility model discloses through adding the reaction material for leucic acid production to jar body, and through starting motor drives the mixing rod rotation to mix and stir the material in jar body, under the action of transmission mechanism, make the mixing rod can mix and stir the reaction material in jar body all -round, avoid appearing because the reaction material deposit and cause the situation that cannot be stirred, be beneficial to the promotion mixing quality.

The application discloses lactobacillus reuteri ZY18 and application thereof as a feed additive. The lactobacillus reuteri ZY18 is obtained through isolation and screening from the excrement of weaned piglets, and is identified through morphology and molecular biology, and the microbial preservation number of the lactobacillus reuteri ZY18 is CGMCC No. 28938. The lactobacillus reuteri ZY18 has good acid production performance, has tolerance to a simulated gastrointestinal environment, can tolerate an acid or bile salt environment and has bile salt hydrolyase activity, has good safety, has good hydrophobicity and self-aggregation capacity and adhesion capacity. It is proved through experiments that the lactobacillus reuteri ZY18 has the purposes of inhibiting bacteria, promoting animal growth, improving animal intestinal inflammation and damage, improving animal antioxidant capacity and regulating animal intestinal flora, and has application prospects in preparation of feed additives or medicines.