6 results about "Trimethyl phosphite" patented technology

The application provides a reaction device and method for continuously synthesizing trimethyl phosphite, and belongs to the technical field of trimethyl phosphite synthesis. The reaction device comprises a raw material tank group, a composite reaction kettle, a solvent tank, a pre-cooler, a water washing kettle, an alkali liquid buffer tank, a layered system and a rectification system. The raw material tank group comprises a methanol tank and a phosphorus trichloride tank. The raw material tank group and the solvent tank are connected with the composite reaction kettle through pipelines via the pre-cooler, and the composite reaction kettle is connected with the water washing kettle through a pipeline. The phosphorus trichloride drop-like feed is efficiently converted into a uniform liquid film by a centrifugal disc, and then the liquid film is converted into a fine jet flow by a spraying ring. The fine jet flow is instantaneously and highly intensively sheared with a strong vortex-shaped methanol / solvent flow formed through a tangential feeding pipe. The secondary intensified mixing mode replaces the macroscopic mixing limitation of a traditional stirred tank, realizes instant and uniform mixing of materials at a micro level, thereby inhibiting a side reaction and effectively improving a reaction rate.

The invention relates to the field of lithium ion batteries, and discloses a non-aqueous electrolyte, a lithium battery and electric equipment. Three additives including the N-sulfonyl substituted 2-imidazolidinone derivative, the sulfur-containing compound and the trimethyl phosphite are added into the non-aqueous electrolyte, the three additives generate a synergistic effect, volume expansion of a silicon-based negative electrode is inhibited, excessive decomposition of the electrolyte is avoided, consumption of active lithium and excessive generation of an SEI film are slowed down, and the service life of the non-aqueous electrolyte is prolonged. Therefore, the comprehensive performance of the silicon-based negative electrode lithium ion battery is improved. From the non-aqueous electrolyte formula optimization direction, a series of problems of interface damage and the like caused by volume expansion of the silicon-based negative electrode are improved by a simple, economical and effective method, and the application range of the silicon-based negative electrode lithium battery is widened.

The invention belongs to the technical field of lithium ion batteries, and provides an aluminum alkoxide-phosphate / phosphite electrolyte as well as a preparation method and application thereof. The aluminum alkoxide-phosphate ester / phosphite ester electrolyte comprises aluminum triethoxide, a phosphate ester / phosphite ester compound, an electrolyte solute and a non-aqueous solvent; the phosphate ester / phosphite ester compound is trimethyl phosphate, triethyl phosphate, triisobutyl phosphate, triphenyl phosphate, tripropargyl phosphate, tris (trimethylsilyl) phosphate, dimethyl methylphosphonate, diethyl ethylphosphonate, trimethyl phosphite, triethyl phosphite and triisopropyl phosphite, and the solvent is a solvent. The catalyst is one or more of triphenyl phosphite and tri (trimethylsilyl) phosphite. The electrolyte has good thermal stability and flame retardance under high voltage, and the safety of the battery is greatly improved; in addition, the electrolyte additive composition can inhibit the corrosion of the aluminum current collector, so that the side effect of the corrosion of the current collector on the battery is reduced.

The utility model relates to the technical field of trimethyl phosphite safety production, in particular to a tail gas treatment device for trimethyl phosphite safety production, which comprises an operation box, a spraying mechanism is mounted at the top end of the operation box, the spraying mechanism comprises a placing box and a spraying part, the spraying part is mounted at the bottom end of the placing box, and the spraying part is mounted at the bottom end of the placing box. The spraying part is installed on the upper side of the interior of the spraying box, an air inlet pipe is arranged at the left end of the spraying box and extends to the outer side of the left end of the operation box, a C-shaped pipe is installed on the right side of the spraying box, a water collecting box is arranged on the bottom side of the spraying box, and a purification mechanism is installed on the bottom side of the interior of the operation box and comprises a purification box and a screen. Primarily treated tail gas can be conveyed through a C-shaped pipe on the right side of the spraying box to be matched with a purification box on the bottom side to be purified, operation can be carried out continuously through the design, resource consumption is reduced, inactivated activated carbon can be taken out through an extension rod to be replaced, and therefore the applicability of the device is improved.

This invention relates to the field of deodorization equipment technology, specifically to a deodorization device and method for trimethyl phosphite distillation tail gas. It includes a spray tower, within which spray pipes and nozzles installed at the lower ends of the spray pipes are arranged. A dynamic demisting packing layer is provided at the top inner part of the spray tower. The dynamic demisting packing layer comprises multiple thin plates arranged parallel and at equal intervals at the top inner part of the spray tower. Adjacent thin plates form a tail gas channel for the tail gas to pass through. The spray direction of the nozzles is towards the upper end of the thin plates and the upper port of the tail gas channel. A driving mechanism is also provided within the spray tower to drive the thin plates to reciprocate within the spray tower, periodically changing the flow cross-section of the tail gas channel formed by adjacent thin plates. This invention effectively solves the problems of liquid flow deviation and asynchronous gas-liquid distribution in traditional packing layers by periodically reciprocating the thin plates and alternately changing the cross-sectional shape of the tail gas channel.

The invention discloses a microencapsulated modified aluminum phosphite and organic phosphorus synergistic flame-retardant epoxy resin composition and a preparation method thereof, and belongs to the technical field of high polymer material modification and flame retardance. The composition comprises the following components in parts by mass: 98-102 parts of epoxy resin, 10-15 parts of microencapsulated modified aluminum phosphite, 5-10 parts of an organophosphorus flame retardant and 25-35 parts of a curing agent, the microencapsulated modified aluminum phosphite is of a core-shell structure formed by coating aluminum phosphite with melamine-formaldehyde resin through in-situ polymerization, and the organophosphorus flame retardant is prepared from trimethyl phosphite, phosphorus oxychloride and pentaerythritol through catalytic condensation. During preparation, all the components are uniformly mixed and then cured and molded. By constructing a synergistic flame-retardant system, the problems that a traditional flame retardant is poor in compatibility and uneven in dispersion are solved, efficient flame retardance is achieved under the condition of low total addition amount, the smoke suppression and heat suppression effects are achieved, and the flame retardant is suitable for the fields of electronic appliances, aerospace and the like and has good practicability and industrial application value.