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57 results about "Aluminium phosphide" patented technology

Aluminium phosphide (aluminum phosphide) is a highly toxic inorganic compound with the chemical formula AlP used as a wide band gap semiconductor and a fumigant. This colorless solid is generally sold as a grey-green-yellow powder due to the presence of impurities arising from hydrolysis and oxidation.

Method and device for treating residues of aluminum phosphide tablet fumigation agent

The invention discloses a method and a device for treating residues of an aluminum phosphide tablet fumigation agent. A gas conveying tube on a polymerization reactor is utilized to feed generated hydrogen phosphide gas into an absorbing tower; the absorbing tower adopts counter-current operation; an absorbing liquid is sprayed from the top of the tower, the hydrogen phosphide gas enters from the bottom of the tower; a 25-75wt% sodium chlorite absorbing liquid is stored in a storage slot; the absorbing liquid is fed into the absorbing tower so as to be circulated and absorbed by a pump; a pollution-free phosphate liquor is formed after the absorbing liquid is statured, and can be used as an agricultural fertilizer; after being hydrolyzed in the polymerization reactor, the aluminum phosphide residues are polymerized at 65-75 DEG C under normal pressure and enter a separator, so that auxiliary materials are separated out, the pH of the filtrate is regulated to obtain a polymerized aluminum chloride water treating agent which can be directly sold as a product; the separated waste residues are harmless talcum powder or magnesium stearate which can directly enter soil. The method and the device disclosed by the invention have the advantage that the residues of the aluminum phosphide tablet fumigation agent are completely treated in a harmless manner.
Owner:中国人民解放军防化学院

Aluminum phosphide residue harmless treatment method and treatment device system

The invention discloses an aluminum phosphide residue harmless treatment method and a treatment device system. The aluminum phosphide residue harmless treatment method comprises the following steps: 1) adding aluminum phosphide residues into a residue treatment container, and adding an alkaline chemical agent and water to carry out a reaction so as to obtain hydrogen phosphide gas and first residue slurry, wherein the alkaline chemical agent is an alkaline chemical agent dissolved into water to be reacted with aluminum hydroxide; 2) adding an oxidizing agent into the first residue slurry until no hydrogen phosphide escapes so as to obtain second residue slurry, wherein the oxidizing agent is an oxidizing agent reacted with the hydrogen phosphide; 3) adding an acid into the second residue slurry for performing pre-curing treatment so as to obtain third residue slurry, wherein the acid is an acid reacted with aluminum hydroxide; and 4) adding a curing agent into the third residue slurry for curing, thereby obtaining the massive condensate. According to the treatment method, aluminum phosphide residues can be safely, rapidly and completely treated in a fumigation warehouse on site, and the treated residues do not contain any aluminum phosphide residue.
Owner:SHANGHAI TOBACCO GRP CO LTD +1

Aluminum phosphide sustained-release coating treatment method

The invention relates to an aluminum phosphide sustained-release coating treatment method. In the production process of aluminum phosphide, after an aluminum phosphide tablet is formed, the aluminum phosphide tablet is put in liquid paraffin for soaking for 20-60 seconds, and the soaked aluminum phosphide tablet is dried and then packaged after being taken out. The quality of liquid paraffin is different, stored grains can be damaged after poor liquid paraffin is used, and thus colorless and tasteless liquid paraffin with high quality needs to be adopted, and residues harm to the health of people cannot be generated after the stored grains are fumigated. By utilizing macromolecular coating treatment, the leakage of hydrogen phosphide molecules is caused, so that the discharging speed of aluminum phosphide in unit time is greatly reduced, the duration time of pesticide effect is prolonged, the killing effect of pests is improved, the safety of workers in a production packaging process is improved, and the intoxicating phenomenon of workers in a aluminium phosphide packaging process is completely eradicated. Through verification of an applicant for many years, the aluminum phosphide sustained-release coating treatment method disclosed by the invention is safe, reliable, good in using effect and free of harmful residues for grains.
Owner:赵华林

Synthesis method of indium phosphide and synthesis device thereof

The invention relates to a synthesis method of indium phosphide and a synthesis device thereof. A first container for storing indium and a second container for storing phosphorus in a sealed pipe areboth placed in a phosphorus pressure control area initially, the temperature of the phosphorus pressure control area is greater than or equal to the vaporization temperature of phosphorus and is lowerthan the melting point of indium phosphide, the temperature of the phosphorous pressure control area is utilized to melt and preheat indium and vaporize phosphorus, and in the moving direction of thesealed pipe, the first container is located in front of the second container; the sealed pipe moves from the phosphorous pressure control area to a reaction area, the temperature of the reaction areais greater than or equal to the melting point of indium phosphide, in the reaction area, phosphorus steam is melted into an indium melt to form an indium phosphide melt; the sealed pipe moves from the reaction area to a polycrystal cooling area, the temperature of the polycrystal cooling area is lower than the reaction area, and the indium phosphide melt cools into an indium phosphide polycrystalin the polycrystal cooling area. According to the invention, the phosphorous pressure control area is utilized to store liquid indium to effectively avoid the Si pollution problem caused by reactionof high temperature indium with a quartz crucible wall, and the InP polycrystal product has higher purity.
Owner:珠海鼎泰芯源晶体有限公司

Insect-and-ant prevention polyethylene water supply tubular product and preparation method thereof

The invention discloses an insect-and-ant prevention polyethylene water supply tubular product and a preparation method thereof. The insect-and-ant prevention polyethylene water supply tubular product is prepared from the following raw materials in parts by weight: 40-60 parts of high density polyethylene, 20-40 parts of linear low density polyethylene, 15-25 parts of polyethylene naphthalate, 5-10 parts of nano aluminium phosphide, 10-15 parts of bis(2-ethylhexyl) terephthalate, 7-14 parts of naphthenic acid butyl ester, 2-3 parts of propyl gallate, 10-15 parts of steel slag micro powder, 8-16 parts of germanium powder, 15-20 parts of filling master batch, 3-6 parts of polyethylene wax, 2-4 parts of coconut monoethanol amide, 3-4 parts of polyamide wax micro powder, 2.5-4.5 parts of eucalyptus oil, 1.5-2.5 parts of 2-ethylhexyl diphenyl phosphate, 2-3 parts of dibasic lead stearate, 1-2 parts of di(beta-butoxy carbonyl-ethyl) tin bis(isooctyl mercaptoacetate), 1-2 parts of dichlorodiphenyltrichloroethane and 2-3 parts of benzyl benzoate. According to the invention, insect-and-ant prevention elements such as nano aluminium phosphide, eucalyptus oil and dichlorodiphenyltrichloroethane are added in the PE (polyethylene) water supply tubular product, so that the polyethylene water supply tubular product can be effectively prevented from being bitten by insects and ants; in addition, the prepared tubular product has excellent mechanical property, ageing resistance, heat resistance and processability, and is long in service life and wide in application prospect.
Owner:ANHUI DINGYUAN ZHENYUN PLASTIC

Device and process for safely treating aluminum phosphide fumigating residues

The invention discloses a device and process for safely treating aluminum phosphide fumigating residues. The process comprises the steps that firstly, inert gas is introduced into a hydrolyzing and absorbing tank, air in the hydrolyzing and absorbing tank is discharged, then water is injected into the hydrolyzing and absorbing tank, then a hydrolyzing agent, the aluminum phosphide fumigating residues and a site absorption agent are sequentially added to the hydrolyzing and absorbing tank, and absorption liquid is sprayed for absorption in an exhaust absorption device; and secondly, reaction liquid generated after a hydrolyzing reaction is conducted is discharged and filtered, filter residues are neutralized and buried safely, filter liquid returns to the hydrolyzing and absorbing tank to replace the water added to the hydrolyzing and absorbing tank in the first step, residual liquid is absorbed by exhaust to complement the insufficient part, and raw materials are added for a next reaction. According to the device and process, the hydrolyzing reaction is performed in the hydrolyzing and absorbing tank, exhaust absorption comprises site absorption in the hydrolyzing and absorbing tank and further absorption in a two-stage exhaust absorption tower, and the residual liquid absorbed by exhaust can be reused for hydrolyzing agent preparation.
Owner:ZHEJIANG GONGSHANG UNIVERSITY +1

Fumigation insecticide, preparation method of fumigation insecticide and disinfection and killing method adopting fumigation insecticide

InactiveCN112237204ASmooth sustained releaseLong-lasting insect repellentBiocideAnimal repellantsPolyolPolythylene glycol
The invention relates to a fumigating insecticide, a preparation method of the fumigating insecticide and a disinfection and killing method adopting the fumigating insecticide. The fumigating insecticide is prepared from the following components in parts by weight: aluminum phosphide, cyhalothrin, chlorantraniliprole, ethanol, polyethylene glycol, phenolic resin, guar gum, calcium alginate and castor oil polyether polyol. The preparation method of the fumigating insecticide comprises the following steps: mixing and stirring all the raw materials at the temperature of 55-65 DEG C, then rapidlycondensing, and drying at the temperature of 40-50 DEG C to obtain the fumigating insecticide. The disinfecting and killing method adopting the fumigating insecticide comprises the following steps: atthe temperature of 20-25 DEG C and the humidity of 30-33RH%, putting the fumigating insecticide into a closed space at the usage amount of 6-10g / m < 3 >; the fumigating insecticide has the effect ofstably and durably releasing hydrogen phosphide, so that the effect of durably preventing and killing insects can be achieved by using a relatively small amount of fumigating insecticide, and the costof the disinfecting and killing process is saved.
Owner:河南省紫风养护发展有限公司
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