23 results about "Hydrogen phosphide" patented technology

The invention belongs to the technical field of granary access control, and particularly relates to an intelligent granary access control system which comprises an environment sensing module, an identity recognition module, a processing control module and an execution and feedback module. The environment sensing module is used for collecting environment parameter data at the entrance of the granary in real time and comprises a phosphine sensor, an oxygen sensor and a carbon dioxide sensor; according to the invention, by fusing the technical characteristics of the hydrogen phosphide sensor, the oxygen sensor and the carbon dioxide sensor, the environmental safety is comprehensively evaluated, and compared with the dependence of a single sensor, the accuracy and reliability of environmental state judgment are remarkably improved, and the occurrence of false alarms and missing alarms is effectively prevented. Due to the fact that a control logic process of'absolute priority of environmental safety 'is adopted, the technical characteristic ensures that personnel safety is put at the first place under any condition, which is a core guarantee of high safety of the system, and the effect of the system is directly reflected as protection of life safety.

The unattended granary hydrogen phosphide fumigation device comprises a first supporting plate and a second supporting plate, two groups of generating gas tanks are symmetrically arranged between the first supporting plate and the second supporting plate, and heat dissipation assemblies are arranged in the two groups of generating gas tanks and on the surfaces of the two groups of generating gas tanks; the heat dissipation assembly comprises a conveying pipe, the upper end of the conveying pipe is in through connection with a first flow dividing pipe and a second flow dividing pipe, the end, away from the conveying pipe, of the surface of the second flow dividing pipe is in through connection with a heat dissipation plate, and a wavy water guide groove is formed in the heat dissipation plate. Water is conveyed into a second flow dividing pipe, the water entering the second flow dividing pipe flows into a heat dissipation plate, is guided by a wave groove and then flows into a filtering water tank again through a water drainage pipe, and the circulation is carried out, so that rapid heat dissipation of the heat dissipation plate can be realized, heat generated when hydrogen phosphide is generated in the gas generation tank is reduced, and the reaction stability is improved.

The invention relates to the technical field of semiconductor material precision machining, in particular to a chemical mechanical polishing solution as well as a preparation method and application thereof. The chemical mechanical polishing solution comprises the following components in percentage by mass: 6-12% of a composite abrasive, 3-7% of a composite oxidant, 2-5% of a complexing agent, 0.5-2% of a phosphine antidote, 0.3-1.5% of a dispersion stabilizer, 0.1-1% of a pH regulator and the balance of water. The composite abrasive is a composite material of aluminum oxide and silicon dioxide; the composite oxidant comprises a sodium hypochlorite solution and a hydrogen peroxide solution. Through reasonable proportioning and synergistic effect of the composite abrasive, the composite oxidant, the complexing agent, the phosphine antidote, the dispersion stabilizer and the pH regulator, the polishing solution is not only suitable for a single substrate, but also compatible with chemical mechanical polishing of three typical third-generation semiconductor materials of indium phosphide, gallium arsenide and germanium, has good universality and process adaptability, and is suitable for industrial production. And the production cost and the process switching complexity can be reduced.

[Problem] To provide acetylene and acetylene derivatives safely usable as raw materials for various plastics while reducing an environmental load, and to provide a method for efficiently producing the acetylene. [Solution] One aspect of the present invention provides acetylene containing carbon atoms derived from waste, the acetylene containing hydrogen phosphide and / or hydrogen sulfide, the volume fraction of hydrogen phosphide being 0.1% or less, the volume fraction of hydrogen sulfide being 0.2% or less.

The invention provides a calcium carbide process acetylene purification post-treatment method, H2S and PH3 in acetylene gas are treated by sequentially adopting wet catalytic oxidation and an adsorbent adsorption method, an oxidizing agent for wet catalytic oxidation is a mixed solution of ferric sulfate and sulfuric acid, a water-soluble manganese salt and a water-soluble tungstate are also added into the mixed solution, and the water-soluble manganese salt and the water-soluble tungstate are added into the mixed solution. The adsorbent is a cerium-zirconium solid solution loaded with copper oxide. Mn < 2 + > dissociated from manganese salt is introduced into a catalytic oxidation system and forms a bi-component catalytic center with original Fe < 3 + > / Fe < 2 + >, so that the regeneration rate of Fe < 2 + > to Fe < 3 + > can be remarkably accelerated, and the oxidation of the catalyst on hydrogen sulfide and hydrogen phosphide is greatly improved; tungstate is introduced to effectively prevent elemental sulfur from depositing and blocking on the filler and equipment by changing the crystal form of the elemental sulfur, so that the system is guaranteed, PH3 molecules are catalyzed to generate hydrolysis reaction, and phosphorous acid which is easier to oxidize is generated.

The present application relates to the field of potassium hypophosphite production, and particularly relates to a method and system for co-producing potassium hypophosphite and potassium phosphite, which comprises: replacing all the reaction kettles and pipelines with nitrogen to maintain a slight positive pressure in the system; continuously feeding potassium hydroxide aqueous solution and molten yellow phosphorus into the first-stage reaction kettle to generate potassium hypophosphite and phosphine through disproportionation reaction; feeding the reaction liquid into the second-stage reaction kettle to gradually increase the alkali concentration, and convert part of the potassium hypophosphite into potassium phosphite; feeding the reaction liquid into the third-stage reaction kettle to maintain the alkali concentration at a certain level, and convert part of the potassium hypophosphite into potassium phosphite and release hydrogen; feeding the reaction liquid into the fourth-stage reaction kettle to maintain the alkali concentration at a certain level, and continuously discharge the product containing the mixture of potassium phosphite and potassium hypophosphite from the fourth-stage reaction kettle after the reaction approaches equilibrium, thereby improving the production efficiency, reducing the raw material cost, improving the process safety, thermal energy utilization efficiency and product quality, and realizing the comprehensive utilization of the gas byproducts.

The application provides a tail gas purification control method and device, equipment and storage medium for phosphine production, and belongs to the technical field of automatic control. The method comprises the following steps: obtaining running state data of a tail gas purification system at multiple time points in a current period; the running state data comprises inlet gas concentration, outlet gas concentration and inlet-outlet pressure difference; determining the execution sequence of absorption liquid flow regulation, catalyst bed temperature regulation and gas flow rate regulation in the tail gas purification system based on the running state data at the multiple time points, and the regulation direction of the absorption liquid flow regulation, the catalyst bed temperature regulation and the gas flow rate regulation; and performing control regulation of the tail gas purification system based on the execution sequence and the regulation direction. The tail gas purification control method and device, equipment and storage medium provided by the application can improve the tail gas purification effect.

The utility model provides an acetylene purification device, an acetylene production system and an acetylene carbon black production system, and relates to the technical field of chemical process, acetylene enters a shell through an acetylene gas inlet end and enters purification packing layers again along a distributor, the purification packing layers are arranged in the shell at intervals, and the acetylene carbon black production system is arranged in the shell. Acetylene is purified through the purification filler layer, harmful impurities such as hydrogen phosphide and hydrogen sulfide in the acetylene are purified, reaction and generation of subsequent products are facilitated, and the purified acetylene is conveyed out through the acetylene gas outlet end to enter the next procedure. According to the acetylene carbon black purification device, acetylene is purified by arranging the purification filler layer, and the obtained acetylene carbon black is low in ash content and high in quality when the acetylene carbon black is subsequently prepared from the acetylene.

The utility model discloses a hydrogen phosphide tail gas treatment device. According to the technical scheme, the aluminum phosphide residual material recycling device comprises an air compression mechanism, a vacuum material suction mechanism, an aluminum phosphide residual material generation device, a fan circulation device and a control center. The air compression mechanism comprises an air compressor and a high-pressure air supply pipe connected with the air compressor; the vacuum material suction mechanism comprises a first vacuum material conveyor and a second vacuum material conveyor which are arranged in parallel, the aluminum phosphide residual material generation device comprises a first-stage reaction tank and a second-stage reaction tank which are connected in series, and the fan circulation device comprises a circulation fan communicated with the second-stage reaction tank; and the circulating fan is communicated with a circulating air duct system of a grain pile through a positive pressure end air inlet pipe and a return pipe. The scheme provided by the utility model is used for treating residual powder after deliquescence of aluminum phosphide for further thorough reaction, and poison gas after reaction is sent back to a grain pile for effective utilization.

The utility model discloses an aluminum phosphide deliquescence rate detection device, and relates to the technical field of aluminum phosphide deliquescence rate detection, the aluminum phosphide deliquescence rate detection device comprises a machine body, the bottom end in the machine body is provided with a heating cavity, the rear side of the machine body is fixedly provided with a purification assembly, and the purification assembly is used for absorbing hydrogen phosphide gas generated by aluminum phosphide and purifying the hydrogen phosphide gas; a detection assembly is arranged in the machine body and used for detecting the deliquescence rate of aluminum phosphide, and the purification assembly comprises a box body. According to the hydrogen phosphide purification device, hydrogen phosphide gas remaining in the gas outlet cavity is conveyed to the bottom end of the interior of the purification box through the exhaust pipe, the hydrogen phosphide gas is absorbed by sodium hypochlorite to generate stable and harmless phosphates, the risk of the hydrogen phosphide gas is reduced, and the use safety is improved.

The utility model belongs to the technical field of aluminum phosphide crushing, and particularly relates to a high-safety aluminum phosphide reaction solid block crushing device which comprises an outer box body, a feeding hopper is arranged at the top of the outer box body, two movable plates are rotatably connected to the top of an inner cavity of the outer box body through torsional springs, two crushing rollers are arranged in the inner cavity of the outer box body, and the two movable plates are arranged on the outer box body. The bottom of the outer box body is movably connected with a movable box, and the two sides of the movable box are provided with a first winding bin and a second winding bin correspondingly. The space between the inner cavity of the outer box body and the feeding hopper can be shielded through the two movable plates, the sealing performance in the crushing process is guaranteed, the protective layer automatically covers the top of the movable box, the situation that crushed aluminum phosphide solid blocks in the movable box make contact with the external environment and workers can be avoided, and the working efficiency is improved. The safety in the crushing process is improved, meanwhile, toxic hydrogen phosphide can be converted into relatively harmless substances through a sodium hydroxide solution in the fixing groove, and the crushing safety is further improved.

This invention relates to the field of precision machining technology for semiconductor materials, and in particular to a chemical mechanical polishing (CMP) slurry, its preparation method, and its application. The CMP slurry comprises the following components by mass percentage: 6-12% composite abrasive, 3-7% composite oxidant, 2-5% complexing agent, 0.5-2% phosphine detoxifier, 0.3-1.5% dispersant stabilizer, 0.1-1% pH adjuster, and water as the balance. The composite abrasive is a composite material of alumina and silicon dioxide. The composite oxidant includes sodium hypochlorite solution and hydrogen peroxide solution. This invention, through the rational proportioning and synergistic effect of the composite abrasive, composite oxidant, complexing agent, phosphine detoxifier, dispersant stabilizer, and pH adjuster, is not only suitable for single substrates but also compatible with the CMP polishing of three typical third-generation semiconductor materials: indium phosphide, gallium arsenide, and germanium. It exhibits good versatility and process adaptability, helping to reduce production costs and process changeover complexity.

The invention discloses a preparation method of a fibrous catalyst for simultaneous purification of hydrogen sulfide and phosphine. The prepared fibrous catalyst is composed of a carbon fiber carrier and a surface metal active component. The fibrous catalyst for synchronous removal of hydrogen sulfide and phosphine is prepared through an electrostatic spinning process, a hydrogen peroxide curing process, a metal salt ultrasonic impregnation process and a roasting process. The fibrous catalyst prepared by the method has rich internal pore structures and high-dispersity surface active components, has strong adsorption and catalysis capabilities, realizes synchronous deep removal of H2S and PH3, and also prolongs the service life of the catalyst. The preparation process is simple, and industrial production is easy to realize.

The invention provides a tail gas purification control method and device for hydrogen phosphide production, equipment and a storage medium, and belongs to the technical field of automatic control. The method comprises the steps that running state data of a tail gas purification system at multiple time points in the current time period are obtained; the operation state data comprises inlet gas concentration, outlet gas concentration and inlet and outlet pressure difference; determining an execution sequence of absorption liquid flow adjustment, catalyst bed temperature adjustment and gas flow rate adjustment in the tail gas purification system and respective adjustment directions of the absorption liquid flow adjustment, the catalyst bed temperature adjustment and the gas flow rate adjustment based on the operation state data at the plurality of time points; and controlling and adjusting the tail gas purification system based on the execution sequence and the adjusting direction. According to the tail gas purification control method and device for hydrogen phosphide production, the equipment and the storage medium, the tail gas purification effect can be improved.

The application discloses a preparation method of modified superfine sodium hypophosphite and belongs to the technical field of sodium hypophosphite preparation. The preparation method of the modified superfine sodium hypophosphite comprises the following steps: step (1), mixing quicklime and water to prepare lime milk, then adding a sodium hydroxide solution into a reaction kettle containing the lime milk, uniformly mixing and obtaining a mixed solution; step (2), heating the mixed solution while introducing nitrogen, adding yellow phosphorus into the reaction kettle, heating and reacting to obtain a reaction solution, collecting generated gas through a pipeline during the reaction process, and treating the gas; and step (3), adding a modified surfactant into the reaction solution, stirring and mixing, filtering, removing calcium, adjusting pH, concentrating, crystallizing, centrifuging, drying and obtaining the modified superfine sodium hypophosphite. The prepared sodium hypophosphite has small and uniform particle size, and the content of phosphine gas in the preparation process is low.

The invention relates to the technical field of aluminum processing, and discloses a manufacturing method of a high-conductivity aluminum foil for a power battery based on continuous casting and rolling, which comprises an online sonochemical purification technology, and trace impurities in molten aluminum are removed by utilizing the synergistic effect of a sound-sensitive fluxing agent containing tin-bismuth alloy particles and rare earth oxide particles and ultrasonic waves. Then, the aluminum foil formed through continuous casting and rolling is not cooled, surface pre-activation is immediately conducted through online plasma jet, in-situ reaction is conducted in the hydrogen phosphide-containing atmosphere by means of residual heat of the aluminum foil, and a compact aluminum phosphide functional layer is generated on the surface of the aluminum foil. The invention also discloses the aluminum foil prepared by the method. According to the technical scheme, the bulk resistivity of the aluminum foil is reduced through melt purification, a high-resistance natural oxide layer is replaced by generating an aluminum phosphide functional layer, the interface contact resistance is remarkably reduced, and the binding force with an active material coating is enhanced.

This invention relates to the field of water treatment technology, and more particularly to a phosphorus-containing wastewater treatment system. The system comprises, from bottom to top: a biological phosphorus removal reaction unit, an electrobiological oxidation adsorption unit, and a gas membrane separation unit. The biological phosphorus removal reaction unit includes an anaerobic tank and an aerobic tank arranged in parallel. The electrobiological oxidation adsorption unit includes an electrobiological phosphorus oxidation tank and a baffled adsorption tank arranged in parallel. The electrobiological phosphorus oxidation tank is located above the anaerobic tank, and its bottom is connected to the interior of the anaerobic tank through a first exhaust port. The baffled adsorption tank is located above the aerobic tank, and its bottom is connected to the interior of the aerobic tank through a second exhaust port. The gas membrane separation unit is located above the baffled adsorption tank, and its bottom is connected to the interior of the baffled adsorption tank through a fourth exhaust port. This phosphorus-containing wastewater treatment system, while performing biological phosphorus removal from phosphorus-containing wastewater, can also treat the accompanying phosphine gas and bioaerosols, helping to eliminate safety hazards and protect the atmospheric environment.

This invention relates to the field of water treatment technology, and more particularly to an integrated treatment method for liquid, gas, and microbial aerosols of phosphorus-containing wastewater. The method includes: anaerobic treatment of phosphorus-containing wastewater in an anaerobic tank to obtain intermediate treated wastewater and a first waste gas; aerobic treatment of the intermediate treated wastewater in an aerobic tank to obtain purified water and a second waste gas; introduction of the first waste gas into an electroactive reaction zone; spraying a portion of the purified water as a nutrient conductive liquid into the electroactive reaction zone; treating the second waste gas using adsorption packing to obtain intermediate purified gas; separating the intermediate purified gas using a gas separation membrane module to obtain oxygen-enriched gas and other gases; and introducing the oxygen-enriched gas into the aeration port of the aerobic tank as supplementary aeration. This treatment method, while biologically removing phosphorus from phosphorus-containing wastewater, can also treat the accompanying phosphine gas and bioaerosols, helping to eliminate safety hazards and protect the atmospheric environment.

The utility model discloses a deliquescence type hydrogen phosphide gas generating device. According to the technical scheme, the phosphine generating device comprises a plurality of phosphine generating chambers, the phosphine generating chambers are fixed together through a top fixing plate and a bottom fixing plate, and each phosphine generating chamber comprises a keel mechanism playing a supporting role. A generating mechanism for generating phosphine gas, a material closing mechanism for preventing powder from falling and a powder collecting mechanism for collecting the powder are fixedly arranged in the keel mechanism, and a dust isolation mechanism for sealing the phosphine generating chamber is further arranged outside the keel mechanism. The scheme provided by the utility model is used for generating hydrogen phosphide gas, that is, the hydrogen phosphide gas is fully subjected to deliquescence reaction with moisture in flowing air, and residues are automatically fed into the treatment unit, so that the contact between people and medicines and the contact between the medicines and the environment are minimized, the harm of toxic gas in the environment is reduced, and the personal safety is ensured.

The utility model relates to an aluminum phosphide crushing device, and belongs to the technical field of aluminum phosphide processing. Comprising a smashing main machine with a feeding opening and a finished product outlet, a buried air return opening is formed in the ground supported by the smashing main machine and connected with a cyclone separator through a first pipeline, and the cyclone separator is connected with a cloth bag separator through a second pipeline; the other end of the dry air supply pipeline A is connected with a hood top air inlet in the air distribution hood, drooping dust collection soft curtains are installed on the periphery of the air distribution hood, the smashing main machine is located in a space defined by the dust collection soft curtains, and the air distribution hood is installed above the smashing main machine. And a first dehumidifier and a first circulating fan are mounted on the dry air supply pipeline A. The aluminum phosphide crushing device has the following beneficial effects that the consequence that the aluminum phosphide absorbs moisture in air and releases hydrogen phosphide gas due to the fact that damp air is mixed into the aluminum phosphide when the aluminum phosphide is crushed is avoided as much as possible, and the occurrence rate of aluminum phosphide poisoning events is effectively reduced.

The invention discloses a high-voltage-resistant red phosphorus flame-retardant polyamide composition and a preparation method thereof, and belongs to the technical field of flame-retardant materials. The composition comprises the following components in percentage by mass: 30-80 wt% of aliphatic polyamide, 2-10 wt% of red phosphorus, 0.5-10 wt% of aromatic zinc carboxylate, 0.5-5 wt% of hydroxyapatite, 5.0-20 wt% of a toughening agent, 10-50 wt% of a reinforcing agent and 0-5 wt% of other auxiliaries, the sum of the contents of all the components is 100 wt%, and the raw material components are subjected to melt blending processing through a single-screw or double-screw extruder. The invention provides the high-voltage-resistant red phosphorus flame-retardant polyamide composition, the natural color and black CTI (comparative tracking index) of the composition is greater than 500V, the IPT (inclined plane tracking) of the composition is greater than 1.5 kV, the composition has high-level flame retardance and cost effect, and meanwhile, the problem of hydrogen phosphide precipitation of a material is solved.

The invention discloses an amino phosphonic acid metal compound as well as a preparation method and application thereof. The amino phosphonic acid metal compound is a compound formed by combining amino phosphonic acid radicals and aluminum ions through ionic bonds. The invention provides a UL94V2 flame retardant scheme based on an amino phosphonic acid metal salt flame retardant / melamine and a hydrobromide of a derivative thereof / a free radical initiator. Compared with an aluminum hypophosphite component, the amino phosphonic acid metal compound disclosed by the invention is used for producing and processing the flame retardant, so that hydrogen phosphide gas can be prevented from being decomposed, the risk of fire is avoided, and the problem of yellowing of a polymer product cannot be caused. Besides, the aminophosphonic acid metal aluminum flame retardant also contains a flame-retardant element N, inert gas N2 can be released in the combustion process, O2 around comburent can be diluted, the flame-retardant effect of the flame retardant is further improved, and the flame-retardant UL94V2 level can be realized when the additive amount of the aminophosphonic acid metal aluminum flame retardant acting on polypropylene is required to be 1wt%.

The invention discloses a waste aluminum phosphide and rotary kiln linkage safety disposal method and system, and relates to the technical field of hazardous waste disposal and recycling. The invention discloses a safe disposal method for linkage of waste aluminum phosphide and a rotary kiln. The safe disposal method comprises the steps that firstly, waste aluminum phosphide and water are added into a corrosion-resistant reaction kettle to be stirred and hydrolyzed, and hydrogen phosphide gas and residue slurry are obtained; and then the phosphine gas diluted by the nitrogen and the residue slurry are conveyed to a combustion area of the rotary kiln to be subjected to high-temperature oxidation sintering, residue particles are collected, incineration tail gas is subjected to multi-stage purification treatment, and the tail gas is discharged after being detected to reach the standard. According to the safe and harmless treatment method and system for the waste aluminum phosphide, through the pretreatment coupling high-temperature rotary kiln incineration technology, synchronous high-temperature oxidative decomposition of residues and hydrogen phosphide gas is achieved, toxicity and fire blast risks are thoroughly eliminated, closed operation and automatic control are achieved in the whole process, and safety, environmental protection and high efficiency are guaranteed.