72 results about "Ammonium chlorate" patented technology

The invention provides a room-temperature-cured-type clean solid propellant. The room-temperature-cured-type clean solid propellant is prepared from, by mass, 55%-70% of chlorine-free oxidizing agents, 5%-20% of metal fuels, 5%-15% of plasticizers, 5%-10% of amine-terminated polyether adhesives, 0.5%-1.0% of isocyanate curing agents and 0.01%-3% of function auxiliaries. According to the room-temperature-cured-type clean solid propellant, the detect that in the prior art, due to the fact that an oxidizing agent ammonium perchlorate is used in a compound solid propellant, a large amount of HCl gas is contained in a combustion product, and atomospheric pollution is serious is overcome; the amine-terminated polyether adhesives with the high reaction activity are introduced into a compound solid propellant system, and a cross-linking and curing reaction of terminal amino groups and the isocyanate curing agents is utilized, so that room-temperature curing of the amine-terminated polyether propellant is achieved; no HCl gas exists in the combustion product by adding the chlorine-free oxidizing agents.

A chlorine-containing gas generant composition and a related method for generating an inflation gas for use in an inflatable restraint system are provided. The chlorine-containing gas generant composition includes a nitrogen-containing fuel such as guanidine nitrate, ammonium perchlorate oxidizer, and a chlorine scavenger present in an amount effective to result in a gaseous effluent that is substantially free of hydrogen chloride when the gas generant is combusted, wherein at least about 98 weight percent of the chlorine scavenger is a copper-containing compound such as a copper nitrate complex, basic copper nitrate, cupric oxide or a combination thereof.

The invention discloses an ammonium perchlorate embedded carbon / metallic oxide composite catalyst, and a preparation method thereof. According to the ammonium perchlorate embedded carbon / metallic oxide composite catalyst, three-dimensional ordered macroporous-mesoporous carbon is taken as a carrier material, and at the same time, the ammonium perchlorate embedded carbon / metallic oxide composite catalyst is obtained via loading of nano metallic oxide particles and ammonium perchlorate. The ammonium perchlorate embedded carbon / metallic oxide composite catalyst possesses excellent catalytic effect on thermal decomposition of ammonium perchlorate, and is capable of reducing high temperature thermal decomposition temperature of ammonium perchlorate greatly, and increasing apparent heat release greatly.

The invention discloses a chemical energy-increasing high-efficiency discharge aiding agent and a preparation method and a use method thereof and belongs to the field of oil exploitation. The chemicalenergy-increasing high-efficiency discharge aiding agent is prepared from a cationic surface active agent, a fluorocarbon surface active agent and an energy producing chemical agent, wherein a mass ratio of the cationic surface active agent to the fluorocarbon surface active agent to the energy producing chemical agent is (6 to 8) to (1 to 1.6) to 1; the energy producing chemical agent is a mixture of compound A and compound B; the compound A is ammonium bioxalate, ammonium oxalate, ammonium chlorate, hydrogen peroxide or ammonium chloride; the compound B is potassium nitrite. The discharge aiding agent can generate a lot of gas to improve flowback energy of a fracturing and gel breaking solution, promote high-efficiency flowback of the fracturing and gel breaking solution, reduce fracturing solution adhesion damage and is suitable for being applied to a compact oil reservoir oil well fracturing and production increasing technology to promote the flowback of fracturing and gel breaking solution. The preparation method comprises the steps: taking the cationic surface active agent, the fluorocarbon surface active agent and the energy producing chemical agent; mixing; fully and evenly stirring to prepare the chemical energy-increasing high-efficiency discharge aiding agent. The method is simple, and the utilized raw materials are easy to obtain.

The invention discloses a nearly spherical core-shell structure composite energetic material and a preparation method thereof. Recrystallization is carried out by a solvent-non-solvent method, and dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate is sheared by a colloid mill to obtain nearly spherical dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate particles; ammonium perchlorate is dissolved inwater, the dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate particles are added into an ethanol / ethyl acetate mixed solvent and stirred, an ammonium perchlorate aqueous solution is dripped into dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate suspension, and the ammonium perchlorate is saturated and separated out to obtain the core-shell structure composite energetic material with the ammoniumperchlorate tightly coating the dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate. The composite energetic material prepared by the method provided by the invention has the advantages of high bulk density, low sensitivity and high explosion heat, and can effectively improve the explosion heat of the dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate and improve the oxygen balance of the dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate.

Provided is a method of producing a quaternary alkyl ammonium hypochlorite solution with an excellent storage stability. Specifically, provided is a method of producing a quaternary alkyl ammonium hypochlorite solution, the method including: a preparation step in which a quaternary alkyl ammonium hydroxide solution is prepared and the concentration of amines in the quaternary alkyl ammonium hydroxide solution is set to 20 ppm by mass or less; and a reaction step in which the quaternary alkyl ammonium hydroxide solution is brought into contact with chlorine gas, wherein the concentration of carbon dioxide of a gas phase in the reaction step is 100 ppm by volume or less and the pH of a liquid phase in the reaction step is 10.5 or more.

Provided is a method of producing a quatenary alkyl ammonium hypochlorite solution with an excellent storage stability. Specifically, provided is a method of producing a quaternary alkyl ammonium hypochlorite solution, the method including: a preparation step in which a quaternary alkyl ammonium hydroxide solution is prepared and the concentration of amines in the quaternary alkyl ammonium hydroxide solution is set to 20 ppm by mass or less; and a reaction step in which the quaternary alkyl ammonium hydroxide solution is brought into contact with chlorine gas, wherein the concentration of carbon dioxide of a gas phase in the reaction step is 100 ppm by volume or less and the pH of a liquid phase in the reaction step is 10.5 or more.

The invention relates to modified hydroxyl-terminated polybutadiene as well as a preparation method and application thereof; the modified hydroxyl-terminated polybutadiene has the following structure:HTPB is used as a starting material for chemical modification of the modified hydroxyl-terminated polybutadiene to prepare modified HTPB containing hydroxyl, tertiary amine group and borate group orcyano group at the same time; then the modified product partially replaces HTPB and is added into the formula of the hydroxyl-terminated polybutadiene propellant, wherein the borate group or cyano group in the molecular structure has the function of interfacial bonding of the nitramine filler, the tertiary amine group has the function of interfacial bonding of the ammonium perchlorate and also hasa function of inhibiting decomposition of the ammonium perchlorate, and the hydroxyl group has the function of in cross-linking enhancement in the curing stage. Besides, the modified HTPB integratingthe functions of crosslinking enhancement, interface bonding, combustion speed adjustment and the like has excellent compatibility with a traditional HTPB adhesive, and after the modified HTPB and the traditional HTPB adhesive are mixed, the overall polarity of a propellant adhesive matrix can be improved, and the thermodynamic compatibility with other functional auxiliaries is enhanced.

The invention discloses a device and method for degrading ammonium perchlorate waste water by hydrothermal combined biological method. Mix wastewater, adjust the pH of the reaction system to acidic conditions, and perform the first-order reduction degradation of ammonium perchlorate; the hydrothermal liquid cooling unit is used to cool the ammonium perchlorate hydrothermal liquid after the first-level degradation; the second-level biological method The degradation unit is used to degrade the cooled ammonium perchlorate hydrothermal solution twice by biological method, and discharge it after the treatment reaches the standard; among them, the supernatant of the hydrolysis and fermentation stage of food waste and landfill leachate is used as the electron donor, The source of carbon and trace elements, the inoculum mud comes from the domestication stage of ammonium perchlorate reducing bacteria. The invention can remarkably improve the removal effect of high-concentration ammonium perchlorate wastewater, and at the same time significantly improve the economical rationality and process operability of the process of biologically removing ammonium perchlorate wastewater.

The invention discloses a continuous crystallization device and method for spheroidization of large-particle ammonium perchlorate, and belongs to the technical field of preparation processes of propellants of rockets, missiles and the like. Ammonium perchlorate is a common oxidizing agent. The continuous crystallization device comprises a crystallizer, a material circulating pump, a refined solution raw material tank, a crystallization heat exchanger, a mother liquor overflow tank, a filter, a vacuum pump and a control device. A hot ammonium perchlorate solution is subjected to continuous feeding and continuous discharging, and a product with uniform particle and qualified quality is produced. Continuous crystallization and continuous centrifugal separation processes of ammonium perchlorate are established, manual operation is reduced, and production efficiency of the product is improved; the device and the method are particularly applicable to continuous crystallization preparation ofammonium perchlorate.

The invention discloses a preparation method of a supported ammonium perchlorate / graphene oxide 3D (Three-Dimensional) energetic material. The preparation method comprises the following steps: step one, preparing graphene oxide, and carrying out high-strength ultrasonic treatment, thus preparing a graphene oxide water solution in uniform dispersion; step two, dissolving ammonium perchlorate crystals in the graphene oxide water solution, and putting and completely freezing the mixed solution in a low-temperature environment; step three, removing water in a mixture by utilizing a freeze-drying method, and reserving a 3D structure of ammonium perchlorate / graphene oxide. According to the preparation method of the supported ammonium perchlorate / graphene oxide 3D energetic material, disclosed bythe invention, the cost is low, the safety is high, all components of the supported ammonium perchlorate / graphene oxide 3D energetic material are uniform in distribution, residual impurities or reactants cannot be generated, and a rate of finished products is high; the formed 3D structure is well kept, heat transfer during a thermal decomposition process is increased, efficient and continuous occurrence of catalytic reaction is ensured, and the burning rate of a propellant can be remarkably increased.

The invention relates to the technical field of ammonium perchlorate, in particular to a production process for 400-micron ammonium perchlorate, wherein the refined ammonium perchlorate solution is input into a thermal insulation tank, and the ammonium perchlorate solution in the thermal insulation tank is input in the crystallizer, and control the input rate according to the crystallization process, so that the ammonium perchlorate solution in the crystallizer maintains a stable supersaturation, and the concentration of the crystal slurry is 37%-42%. Circulate through the external cooler and return to the crystallizer. The circulation volume is 170m3 / h-200m3 / h, and the temperature of the solution is kept at 26°C-28°C, so that the generated crystal nuclei grow in the circulation pipeline and control the fineness of the belt. The range of the crystal is 0.2%-2.0%. After the crystal grain size in the crystallizer is qualified, the discharge pump is used to discharge the material several times intermittently. The present invention directly controls the production of ammonium perchlorate with a particle size of 400 microns, which is once in the crystallizer. Forming, the product yield is over 99.5%.

The invention discloses a method for treating ammonium perchlorate waste water, which comprises the following steps: obtaining intermediate product hydrogen and volatile fatty acid through anaerobic digestion of kitchen waste to produce hydrogen and acid; using the intermediate product hydrogen and volatile fatty acid as The reduction of ammonium perchlorate by perchlorate-reducing bacteria provides electron donors and carbon sources; a three-stage degradation joint process of hydrogen autotrophic reduction, organic acid heterotrophic reduction and iron / sulfur autotrophic reduction is used to reduce ammonium perchlorate For chloride ions, reduce the concentration of ammonium perchlorate wastewater, and complete the treatment of ammonium perchlorate wastewater. The invention can remarkably improve the removal effect of ammonium perchlorate wastewater, and at the same time generate methane as clean energy for life and production, thereby significantly improving economical rationality and process operability.

The invention provides a solid propellant with nitrated hydroxyl-terminated polybutadiene as a binder, which also includes network regulator, curing agent TDI, ammonium perchlorate AP, aluminum powder Al, plasticizer and anti-aging agent , wherein the number-average molecular weight of nitrated hydroxyl-terminated polybutadiene is 3600-5100, the hydroxyl value is 0.42mmol / g-0.55mmol / g, the mass fraction of nitrate ester groups is 5%-9%, and the network regulator has a specified structure Polyester-butylene hydroxyl block polymer, the solid propellant mechanical properties of the present invention are significantly improved, wherein the application of nitrated hydroxyl-terminated polybutadiene improves the compatibility of the binder and the energetic plasticizer, It can improve the oxygen coefficient and energy performance of the propellant.