10 results about "Strong salt" patented technology

This invention discloses a microorganism, a microbial agent, and their applications. The microorganism is *Zygosaccharomyces rouxii*, which was deposited on May 27, 2024, at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 30794. The novel *Zygosaccharomyces rouxii* strain obtained by this invention exhibits rapid growth, strong salt and acid tolerance, and a strong ability to metabolize nitrates and nitrites. Food or feed production methods developed using this novel strain and microbial agent demonstrate high salt tolerance, high fermentation efficiency, and a short production cycle, effectively reducing nitrate and nitrite content during fermentation. Fermented foods made using this novel strain are rich in yeast, low in nitrates and nitrites, and are nutritionally healthy with a unique flavor.

The application relates to a preparation method and application of a low-temperature-resistant ester-based electrolyte. The method comprises the following steps: firstly, dissolving lithium bistrifluoromethylsulfonylimide into a mixed solution of difluoropropionic acid ethyl ester and fluorinated ethylene carbonate to obtain solution A; secondly, dissolving lithium nitrate into ethylene glycol dimethyl ether to obtain solution B; and thirdly, adding solution B into solution A to obtain the low-temperature-resistant ester-based electrolyte. The weak-solvent electrolyte is composed of three solvents and two lithium salts, the carboxylic acid ester has a low melting point and a strong salt-dissolving capacity, the freezing point of the electrolyte can be significantly reduced, the electrolyte still has strong fluidity at low temperature, the migration rate of lithium ions at low temperature is improved, and the low-temperature performance of the battery is improved. The low-temperature-resistant ester-based electrolyte prepared by the application provides valuable insights for the next-generation electrolyte of lithium ion batteries operated under extreme conditions.

The application discloses Vibrio fluvialis JH-3, which is preserved in the Guangdong Microbial Culture Collection Center and has a preservation number of GDMCC NO: 66094. The application also discloses application of the Vibrio fluvialis JH-3 in denitrification and nitrogen removal. The application further discloses a denitrification and nitrogen removal method for salt-containing wastewater, which comprises the following steps: mixing the Vibrio fluvialis JH-3 with salt-containing wastewater to obtain a mixed solution, and culturing to carry out denitrification and nitrogen removal. The Vibrio fluvialis JH-3 screened by the application has strong salt-tolerant denitrification capacity and can be used for biological nitrogen removal of high-salt wastewater.

This invention discloses a composite sealant for metal artifacts and its preparation and application method, comprising a base sealant and a top sealant. The base sealant comprises 20-40 parts by weight of a film-forming substance, 0.5-5 parts by weight of a composite corrosion inhibitor, and 55-79 parts by weight of a first solvent. The composite corrosion inhibitor comprises benzotriazole and 2-mercaptobenzothiazole, with a mass ratio of benzotriazole to 2-mercaptobenzothiazole of 1:0.2-1:5. The top sealant comprises 20-40 parts by weight of a film-forming substance, 1-10 parts by weight of nano-silica, 0.5-5 parts by weight of a hydrophobic modifier, and 45-78 parts by weight of a second solvent. This invention achieves efficient and durable protection for metal artifacts through the synergistic combination of benzotriazole and 2-mercaptobenzothiazole in the base sealant, exhibiting advantages such as good water resistance, strong salt spray corrosion resistance, high transparency, and good reversibility.

The embodiment of the present application relates to the technical field of heavy-duty coating, and discloses a marine facility corrosion protection layer regulation and control method suitable for strong salt spray environment, which comprises preparing a self-activated intermediate paint and applying it between a primer and a topcoat to form a composite protective layer; the core is that a double-triggered mineralization precursor is contained in the main agent of the self-activated intermediate paint, the precursor is composed of BF4 ‑ loaded hydrophobic modified zeolite and zinc phosphate coated water glass microparticles; when the coating is damaged, the corrosion microenvironment of the damaged area can synergistically trigger the zeolite to release BF4 ‑ to buffer the pH, at the same time trigger the dissolution of the coated water glass microparticles and release silicate ions; the released silicate ions react in situ with cations in the environment to generate mineralization products, plugging the damaged area. The present application can actively inhibit corrosion propagation and cathodic delamination after coating damage, significantly improving the long-term reliability and service life of the protective layer.

This invention belongs to the field of petroleum extraction technology, specifically relating to a polymer thickener for oilfield fracturing and its preparation method. The polymer thickener is obtained by polymerizing the following four monomers: polyether, with the following structural formula: [structural formula would be inserted here], where n is a natural number from 5 to 50; allyl malonic acid, with the following structural formula: [structural formula would be inserted here]; 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonic acid inner salt, with the following structural formula: [structural formula would be inserted here]; and sodium p-styrene sulfonate, with the following structural formula: [structural formula would be inserted here]. The polymer thickener of this invention has the advantages of high apparent viscosity, strong shear resistance, and strong salt and hardness resistance.

The application relates to the field of petroleum chemical industry and discloses a composite initiation system, application of the composite initiation system and a polyacrylamide emulsion and a preparation method of the polyacrylamide emulsion. The composite initiation system comprises a compound A, a redox initiator and a first initiator; the first initiator is selected from azo initiators and / or peroxide initiators; wherein the compound A is at least one of compounds shown in formula I; in formula I, R1, R2 and R3 are independently C1-C5 linear alkylene, C3-C5 branched alkylene; R4, R5, R6, R7, R8 and R9 are independently C1-C3 alkyl; in formula I, X has a structure shown in formula I-1; in formula I-1, a, b and c are independently integers of 0-3. The composite initiation system is used for preparing the polyacrylamide emulsion, and the prepared polyacrylamide emulsion has the characteristics of high polymer molecular weight and strong salt resistance.

The present application relates to the technical field of oil and gas field acid liquid, in particular to an integrated three-dimensional variable viscosity acid system and a preparation method thereof, the temperature-resistant and salt-resistant polyacrylamide copolymer prepared by the present application can form a three-dimensional network structure by introducing strong polar groups such as sulfonic acid groups and amide groups, the structure can maintain high viscosity under high temperature and high salt environment through molecular chain stretching, and the viscosity is reduced at low temperature to realize the characteristics of three-dimensional variable viscosity; secondly, the sulfonic acid group of 2-acrylamide-2-methylpropanesulfonic acid has strong salt resistance, the cyclic structure of acryloyl morpholine can enhance the rigidity and thermal stability of the molecular chain, and polyvinyl alcohol fiber can be used as a physical crosslinking point to improve the shear resistance of the system through hydrogen bonding, and the synergistic effect of the three can make the prepared integrated three-dimensional variable viscosity acid system have a more stable molecular structure.

The present disclosure provides a chemical bonding lost circulation additive, a composite lost circulation additive comprising same, a drilling fluid, and a use thereof in drilling engineering. The chemical bonding lost circulation additive comprises a core layer and an inorganic material coating the outer surface of the core layer, wherein the material of the core layer has a structure as shown in formula (I). The lost circulation additive of the present application demonstrates a higher one-time plugging success rate, better pressure-bearing capacity, better compatibility with a drilling fluid, stronger temperature resistance, stronger contamination resistance, and stronger salt tolerance.(I)

The application relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifying agent for oilfield sewage treatment and a preparation method thereof. The composite water clarifying agent for oilfield sewage treatment is prepared from the following raw materials: double-modified polyacrylamide, imidazoline quaternary ammonium salt graft copolymer, scale inhibitor, adsorbent, dodecyl dimethyl betaine, coagulant aid and deionized water; the double-modified polyacrylamide is obtained by double modification of 2,3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer on polyacrylamide; and the imidazoline quaternary ammonium salt graft copolymer is a graft copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropane sulfonic acid. The composite water clarifying agent can be used for treating high-salt and high-oil sewage generated in the middle and late stages of oilfield exploitation, has the advantages of strong salt resistance, complete demulsification and good flocculation effect, can efficiently remove oil and suspended solids, ensures that the effluent meets the standards, and meets the complex sewage treatment requirements of oilfields.