950 results about "Liquid ammonia" patented technology

The invention relates to the technical field of risk analysis, in particular to a dangerous chemical transportation risk prediction system and method based on big data analysis, and the system comprises a multi-dimensional data acquisition module which is used for collecting human-machine-ring-pipe four-dimensional data in the liquid ammonia water transportation process, and carrying out the standardization processing and time-space synchronization, and obtaining a multi-source heterogeneous data set; the risk level acquisition module is used for constructing a man-machine-ring-management collaborative risk assessment model and analyzing the multi-source heterogeneous data set to obtain a risk assessment result; the human-machine-environment-management collaborative risk assessment model comprises a human-machine interaction key node identification layer, a management behavior-equipment response association analysis layer, an environment-material interaction dynamic risk assessment layer and a multi-dimensional factor risk cascade assessment layer; and the emergency disposal scheme acquisition module constructs an emergency disposal scheme intelligent recommendation model to perform grading and classification analysis on the risk assessment result, generates a multi-level risk early warning and emergency disposal scheme, and optimizes the emergency disposal scheme.

The invention relates to the technical field of industrial process control, and discloses a denitration intelligent monitoring method and system based on data analysis and a storage medium. The method comprises the following steps: performing working condition identification by using an improved K-means algorithm to obtain stable operation, fire change preparation, fire change proceeding and fire change recovery modes; matching a segmented control strategy according to an identification result, and carrying out weighted fusion on feedforward and predictive control in a fire exchange preparation stage to generate a differentiated liquid ammonia regulation instruction; the disturbance feed-forward compensation amount is calculated in combination with the combustion state of the kiln, the adjusting instruction is restrained, and a liquid ammonia control instruction is obtained; the execution effect is monitored in real time through standardized deviation detection, manual intervention is switched in case of abnormity, and control parameters are fed back and updated in case of normal. The problems that NOx control lags behind and liquid ammonia consumption is not economical under the fire exchange working condition are solved, and the control precision and the self-adaptive capacity of the denitration system are improved.

A method for continuously producing m-xylylenediamine belongs to the technical field of organic synthesis and comprises the following steps: (1) mixing isophthalonitrile, toluene and liquid ammonia according to a mass ratio of 1: (3-5): (13-17) in a nitrogen atmosphere to form a reaction mixture; (2) heating the interior of a reaction bed containing a catalyst to 90-95 DEG C, continuously introducing hydrogen into the reaction bed, introducing the reaction mixture after the pressure intensity of the reaction bed is stable, and carrying out a catalytic hydrogenation reaction to generate a reaction product; and (3) carrying out gas-liquid separation on the reaction product, removing liquid ammonia from the liquid-phase product through an ammonia distillation process, and separating toluene and m-xylylenediamine through a rectification process to obtain m-xylylenediamine. According to the method, isophthalonitrile and hydrogen are used as raw materials, liquid ammonia and methylbenzene are used as reaction solvents, the raw materials and the reaction solvents are heated to 90-95 DEG C under the catalytic action of a catalyst for an exothermic reaction, m-xylylenediamine is generated through the reaction, and the reaction yield is larger than 99%.

The invention provides a liquid ammonia in-cylinder direct injection engine combustion system and method with an active pre-combustion chamber, and relates to the technical field of internal combustion engines, the liquid ammonia in-cylinder direct injection engine combustion system comprises a cylinder cover and a cylinder sleeve arranged below the cylinder cover, the pre-combustion chamber is vertically arranged in the center of the cylinder cover, a liquid ammonia injector is arranged on one side of the pre-combustion chamber, and the active pre-combustion chamber is arranged in the cylinder sleeve. A hydrogen ejector and a spark plug are arranged on the pre-combustion chamber; and spraying holes are formed in the pre-combustion chamber and located in the bottom of the pre-combustion chamber, and the spraying holes of the pre-combustion chamber face one side of the liquid ammonia ejector. According to the liquid ammonia in-cylinder direct injection engine combustion system and method with the active pre-combustion chamber, the effect that diffusion combustion is promoted through premixed combustion of ammonia fuel is achieved, accurate control over the combustion initial point and the heat release rate is achieved, and the requirements for the low hydrogen energy ratio, high ignition efficiency and high heat efficiency of an ammonia fuel engine in the full working condition range are met.

The invention provides a preparation method of 2-pyrrolidone, which comprises the following steps: by taking gamma-butyrolactone and liquid ammonia as raw materials, premixing to generate 4-hydroxybutyramide, then removing excessive liquid ammonia, and then dehydrating the 4-hydroxybutyramide to synthesize the 2-pyrrolidone. According to the method disclosed by the invention, the 2-pyrrolidone is synthesized by firstly deaminating and then dehydrating, so that the contents of light and heavy components are effectively reduced, and the yield can reach 95% or above.

The invention provides a liquid ammonia leakage detection and spraying system based on multi-mode sensing. The system comprises a sensing module, a decision module and an execution module, the sensing module is used for collecting multi-modal data around the liquid ammonia storage device; the decision module is used for judging whether liquid ammonia leakage occurs or not according to the multi-modal data, fusing the multi-modal data through a Kalman filtering algorithm to obtain leakage parameters, and generating a dynamic spraying strategy according to the leakage parameters; and the execution module is used for spraying according to the dynamic spraying strategy. Compared with the prior art, the liquid ammonia leakage detecting and spraying system based on multi-modal sensing has the advantages that the occurrence of liquid ammonia leakage is judged by collecting multi-modal data, the dynamic spraying strategy is generated, and the multi-degree-of-freedom spraying head is controlled according to the dynamic spraying strategy to accurately spray a leakage point; therefore, the effects of accurately and efficiently inhibiting liquid ammonia leakage and saving water resources are achieved. The method has the same beneficial effects.

The invention discloses a metal element doped MnO2 and MnFe oxide composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of flue gas desulfurization and denitrification. The preparation method comprises the following steps: dissolving potassium permanganate, divalent manganese salt and doped metal salt in water for reaction to prepare metal element doped MnO2; and mixing and reacting with a template agent, ferric salt and sodium salt, drying and roasting to obtain the final catalyst. The MnO2 electronic structure is modulated by doping metal elements, and the three-dimensional porous structure of the MnFe oxide is constructed by using the template agent, so that the catalyst has efficient adsorption and strong catalytic oxidation capacity, NO and SO2 can be synergistically removed at the same time, and the catalyst has desulfurization and denitrification activity in a wide temperature range of 30-300 DEG C, and is suitable for industrial production. And liquid ammonia does not need to be used in the purification process, so that the purification agent is high in safety and is particularly suitable for purification treatment under complex flue gas conditions in the non-electric industry.

The invention relates to an all-cotton four-way stretch fabric and a preparation method thereof, and belongs to the technical field of textile dyeing and finishing. The preparation method comprises the following steps: performing singeing, enzyme desizing, liquid ammonia finishing, loose alkali shrinkage and overfeeding soft heat setting on gray fabric to obtain the all-cotton four-way stretch fabric. The warp-wise and weft-wise shrinkage rates of the prepared four-way stretch fabric are-3.0%-0%, the warp-wise elastic elongation rate is 12%-15%, the weft-wise elastic elongation rate is 12%-18%, and the elastic residual elongation rate is smaller than or equal to 8%; obvious warp and weft elasticity can be achieved without elastic fibers, the problems that elastic fabrics such as spandex core-spun yarn fabrics are complex to manufacture, unstable in fabric size and the like are solved, the warp and weft elasticity is obvious, the size stability is good, the hand feeling is soft, and the price is low; the preparation method is simple, does not need equipment transformation, is easy to operate and does not damage fiber strength.

The invention provides a catalytic material, a preparation method thereof and application of the catalytic material in high-purity ethyl aliphatic amine, and belongs to the technical field of fine chemical engineering. The catalytic material provided by the invention has a porous structure, so that the specific surface area of the catalytic material can be remarkably increased, more active sites can be used for contact between reaction raw materials and a catalyst, the reaction process is accelerated, meanwhile, the retention time of the reaction raw materials on the surface of the catalyst is prolonged by the porous structure, and the conversion rate of the reaction raw materials (liquid ammonia) is further improved; active components are loaded on the surface of the AB2O4 type porous composite transition metal oxide, so that the number of active sites can be further increased, and the conversion rate of liquid ammonia is further improved. Results of the embodiment show that when the catalytic material provided by the invention is used for preparing ethyl aliphatic amine by an ethanol catalytic amination method, the conversion rate of liquid ammonia is 95% or above.

The invention relates to the technical field of ceramic materials, and discloses a nitrogen-rich Si-Zr-N precursor, a nitrogen-rich amorphous SiZrN ceramic preparation method and a nitrogen-rich Si-Zr-N. The preparation method comprises the following steps: mixing perhydropolysilazane and tetrakis (dicarboxamide) zirconium, and then carrying out low-temperature liquid ammonia crosslinking and room-temperature ammonification to obtain the nitrogen-rich Si-Zr-N precursor. According to the preparation method of the nitrogen-rich amorphous SiZrN ceramic, high-temperature ammonolysis is carried out on a nitrogen-rich Si-Zr-N precursor, and the nitrogen-rich amorphous SiZrN ceramic is obtained. According to the invention, the nitrogen content of the precursor is increased through the molecular-level structure design, so that the formation of the high-nitrogen-ratio amorphous ceramic is facilitated; the pyrolysis path can be regulated and controlled, the product structure is compact, the components are uniform, and the problem of uneven mixing or incomplete reaction in the traditional method is avoided; the precursor is high in universality, is suitable for various processing and pyrolysis modes, and has good application expansibility; the cost is controllable and the method is environment-friendly.

The invention discloses a vehicle-mounted ammonia hydrogen production system, belongs to the technical field of vehicle-mounted ammonia hydrogen production, and solves the technical problems that the existing vehicle-mounted ammonia hydrogen production method cannot fully recycle high-pressure ammonia energy and cannot use air energy. The system comprises a liquid ammonia tank, an ammonia hydrogen production heat exchange catalytic reactor, an engine and a controller, the liquid ammonia tank is connected with the ammonia hydrogen production heat exchange catalytic reactor through an ammonia gas pipe, the engine is connected with the ammonia hydrogen production heat exchange catalytic reactor through an exhaust pipe, and the ammonia gas pipe is sequentially provided with a control valve, a first heat exchanger, a turbine generator, a large-area heat exchanger and a second heat exchanger. The turbine generator is electrically connected with the vehicle-mounted storage battery, the large-area heat exchanger is connected with a variable-frequency air blower through an air pipe, the engine is connected with the first heat exchanger through a cooling water pipe, and the ammonia hydrogen production heat exchange catalytic reactor is connected with the second heat exchanger through a nitrogen hydrogen pipe. High-pressure ammonia gas energy and air energy can be fully recycled and used through the turbine generator and the large-area heat exchanger.

The invention discloses hydrogen production equipment and a hydrogen production method based on sodium-catalyzed ammonia cracking, and the hydrogen production equipment comprises a reactor which is a pressure-bearing shell and tube type heat exchange reactor and is internally provided with a plurality of heat exchange tubes filled with a sodium-based catalyst, two ends of the reactor are sealed through a first sealing cover and a second sealing cover, and the first sealing cover is connected with an ammonia storage tank; the second sealing cover is connected with a gas purification separator; the ammonia storage tank is used for storing liquid ammonia and supplying ammonia to the reactor through the booster pump; the gas purification separator is used for separating unreacted ammonia, nitrogen and hydrogen from emissions of the reactor; the temperature control system controls the reaction temperature by adjusting the flow of the heat source gas entering the reactor. A sodium-based catalyst is adopted, and in-situ regeneration of the catalyst is realized through a dynamic circular reaction mechanism; sodium serves as an intermediate medium and is continuously consumed and regenerated in the ammonia cracking process, external supplementation is not needed, the reaction path specificity is high, the byproduct generation rate is low, and the heat transfer efficiency is improved through the design of the countercurrent shell and tube type heat exchange reactor.

The utility model discloses a gas turbine system based on ammonia catalytic cracking. The gas turbine system comprises a liquid ammonia assembly, a cracking assembly, a liquid ammonia combustion assembly, a heat exchange component and a gas turbine, the cracking assembly is used for pressurizing and cracking part of liquid ammonia provided by the liquid ammonia assembly to generate cracking gas; the liquid ammonia combustion assembly comprises a gasification part and a combustion part which are connected with the liquid ammonia assembly, the gasification part is used for gasifying the other part of liquid ammonia provided by the liquid ammonia assembly, and the combustion part is used for combusting ammonia gas generated by the gasification part so as to provide required heat for the cracking assembly; the heat exchange part and the gas turbine are sequentially connected with the cracking assembly, the heat exchange part is used for cooling cracking gas, and the cooled cracking gas is conveyed into the gas turbine for combustion; smoke exhausted by the combustion component and the gas turbine provides heat needed by the gasification component. Pyrolysis gas generated by pure ammonia catalytic cracking can be used as fuel, the combustion effect is improved, and the energy utilization efficiency is improved.

The invention relates to the technical field of engines, and provides a liquid ammonia engine mechanism and a control method and system. The liquid ammonia engine structure comprises a liquid ammonia supply structure which is communicated with the inlet end of a high-pressure ammonia rail through a pipeline; the high-pressure ammonia rail is connected with the cooling structure, and liquid ammonia in the high-pressure ammonia rail exchanges heat with cooling liquid of the cooling structure for cooling; a liquid ammonia temperature sensor is also arranged on the high-pressure ammonia rail; the outlet end of the high-pressure ammonia rail is communicated with the high-pressure liquid ammonia nozzle through a pipeline; the high-pressure liquid ammonia nozzle atomizes high-pressure liquid ammonia into tiny liquid drops and then sprays the tiny liquid drops into the combustion chamber; a cylinder pressure sensor is arranged at the top of the combustion chamber; an oxygen sensor is arranged on the exhaust pipeline; the system further comprises an ECU module. The ECU module carries out dynamic decision making through a preset sub-working-condition control strategy on the basis of the operation working condition of an engine and obtained monitoring data. The problem that the actual injection amount is reduced due to the liquid-gas entrainment phenomenon in the liquid ammonia conveying process is solved.

The utility model discloses a vehicle ammonia supply device which comprises a liquid ammonia storage tank, a liquid outlet and a gas outlet are arranged on the liquid ammonia storage tank, the liquid outlet is respectively connected with one end of a filling pipeline and one end of a liquid outlet pipeline, the liquid outlet pipeline is connected with a stop valve and an electromagnetic valve in series, the other end of the liquid outlet pipeline is connected with a first medium inlet of a water bath type vaporizer, and the other end of the water bath type vaporizer is connected with a second medium inlet of the water bath type vaporizer. A first medium outlet of the water bath type vaporizer is connected with an inlet of the buffer tank, an outlet of the buffer tank is used for providing ammonia gas, one end of the gas return pipeline is connected with the gas outlet, a pressure gauge, a stop valve and a safety valve are connected to the gas return pipeline in series, and a second medium inlet and a second medium outlet of the water bath type vaporizer are used for being connected with an engine cooling liquid outlet and an engine cooling liquid inlet respectively. And a saturation pressurization pipeline is further arranged, an electromagnetic valve and a heat exchange pipe located in the liquid ammonia storage tank are connected to the saturation pressurization pipeline in series, and two ports of the saturation pressurization pipeline are used for being connected with an engine cooling liquid inlet and an engine cooling liquid outlet respectively. The ammonia supply device for the vehicle can stably supply gas to the vehicle.

This invention discloses a deep peak-shaving system and method for thermal power plants based on ammonia cracking hydrogen production coupled with deep utilization of waste heat. It relates to the field of thermal power generation and includes a gasifier, an ammonia cracking hydrogen production unit, a cooler, a separator, an ammonia storage tank, an ammonia-hydrogen storage system, a peak-shaving burner, and a boiler. This invention utilizes the waste heat of the thermal power boiler to vaporize liquid ammonia into gaseous ammonia. The ammonia cracking hydrogen production unit uses medium- and high-temperature waste heat or electrical energy, along with an ammonia cracking catalyst, to crack a portion of the ammonia gas, producing an ammonia-hydrogen-nitrogen mixture. This mixture is then separated by a separator to obtain an ammonia-hydrogen mixture. The ammonia-hydrogen mixture is mixed with ammonia gas to produce mixtures with different ammonia-hydrogen ratios, which are stored in the ammonia-hydrogen storage tanks. The ammonia-hydrogen ratio used in the burner is adjusted according to different loads to maintain stable combustion. This invention can maintain stable combustion in the burner under low loads, achieving deep peak-shaving of thermal power plants, and can also deeply utilize waste heat from thermal power plants, improving power generation efficiency.

Provided are: a welded joint and a high-strength cladding steel plate that is excellent in ammonia SCC resistance, low-temperature toughness, and bondability and is suitable for conveying liquid ammonia and supplying the same to a storage tank and the like; and a method for manufacturing said cladding steel plate and said welded joint.　The cladding steel plate includes: a base material having a prescribed chemical component; and a cladding material having a prescribed chemical component bonded to at least one surface (the surface serving as the inner surface). The tensile strength of the base material is 780 MPa or more, the absorption energy of the base material according to a Charpy impact test at -40°C is 47 J or more, the maximum hardness of the cladding material is 210 HV or less, and the bonding rate of the base material and the cladding material is 70% or more.

The invention belongs to a urea synthesis system using liquid carbon dioxide and a urea synthesis method. Comprising a urea synthesis tower, the urea synthesis tower is respectively connected with a liquid ammonia pipeline and a carbon dioxide gas pipeline, the carbon dioxide gas pipeline is connected with an outlet of a liquid-phase carbon dioxide delivery pump through a liquid-phase carbon dioxide vaporization unit, and an inlet of the liquid-phase carbon dioxide delivery pump is connected with a liquid-phase carbon dioxide delivery pipeline; liquid carbon dioxide is directly used as a raw material, a liquid-phase carbon dioxide delivery pump is used for pressurization, and gasification is carried out after pressurization, so that the liquid carbon dioxide meets the requirements of a urea synthesis tower, and the characteristics of saving urea synthesis energy consumption, reducing the use amount of circulating water and reducing the occupied area of equipment are achieved.

The invention provides a dual-fuel composite pre-cooling engine system based on jet flow / heat exchanger pre-cooling and a using method of the dual-fuel composite pre-cooling engine system, and relates to the field of aircraft engine systems. An air inlet channel, a fuel pump, a precooler, a jet device, an air compressor, a main combustion chamber, a turbine, an afterburner and an exhaust nozzle sequentially form an engine main body in the axial direction. According to the system, the characteristics of jet flow precooling and heat exchanger precooling are combined, liquid ammonia / kerosene dual-fuel layout is adopted, and a cooling working medium can realize conversion of precooling working places through a control valve according to precooling requirements, so that incoming flow air in different flight states is efficiently precooled; and the problems that a heat exchanger is large in precooling weight and flow resistance and a jet device is poor in precooling heat exchange effect are effectively solved. And finally, the system gives consideration to the simple jet flow pre-cooling structure and the high efficiency of heat exchanger pre-cooling, and the pre-cooling effect and the propelling performance of the pre-cooling engine are effectively improved.

The invention provides a ternary precursor wastewater deamination method and device, and belongs to the technical field of wastewater treatment.The ternary precursor wastewater deamination device comprises a deamination system and an ammonia liquefaction system, the deamination system comprises a supergravity bed, a liquid inlet of the supergravity bed is connected with a wastewater preheating system, and a liquid outlet of the supergravity bed is connected with an ammonia liquefaction system; the liquid outlet is connected with the reboiling system, and the gas outlet is connected with the condensing system. The method comprises the following steps: adjusting the pH value of a wastewater raw material, heating, rectifying the heated wastewater raw material through a supergravity bed, reboiling the separated liquid, refluxing into the supergravity bed, condensing the separated gas, carrying out gas-liquid separation, and compressing and condensing the separated ammonia gas to obtain liquid ammonia; and the separated liquid flows back into the supergravity bed or enters the stronger ammonia water storage tank to be stored. The ammonia concentration of the deaminated wastewater is lower than 10mg / L, and concentrated ammonia water with the mass concentration of 15-20% and liquid ammonia with the purity of more than 99% can be recovered. Recycled stronger ammonia water and liquid ammonia can be reused for production.

The utility model relates to a constant pressure liquid ammonia storage tank, which comprises a tank body and a nitrogen inflation system, the tank body comprises a main tank body, an end cover and a flexible lining, a thermal insulation layer is arranged outside the tank body, the flexible lining is arranged inside the tank body and isolates the main tank body from the chamber space of the end cover, the chamber of the main tank body is filled with liquid ammonia, and the chamber of the end cover is filled with nitrogen. A liquid ammonia filling port and a liquid outlet are formed in the other end of the main tank body; and a nitrogen filling port, a pressure release valve and a pressure gauge are arranged on the end cover. According to the utility model, the pressure in the tank body can be increased by utilizing the nitrogen inflation system for pressurizing and stabilizing the liquid ammonia in the main tank body, so that the liquid outlet stability of the system is improved; the nitrogen chamber and the liquid ammonia chamber are isolated by a flexible material, and expand or contract according to the pressure change to balance the pressure on the two sides; and a thermal insulation material is arranged outside the tank body to keep the temperature of the tank body relatively stable.

This invention discloses a flexible ammonia synthesis process. The feed gas, after preheating, enters a temperature-controlled ammonia synthesis tower, where it reacts under the action of a catalyst. After the reaction, the gas recovers heat energy through an outlet waste boiler, undergoes multi-stage cooling, and then enters an ammonia separator. Liquid ammonia is obtained at the bottom, while the non-condensable gas at the top is pressurized by a circulating compressor and returned to the inlet of the temperature-controlled ammonia synthesis tower. In the tower, the feed gas enters through the feed gas inlet and passes radially from the outside in through a distribution plate, catalyst bed section I, another distribution plate, and catalyst bed section II, undergoing heat exchange and reaction simultaneously. The reacting gases converge at the center and are then exited through the reaction gas outlet at the bottom. This invention features a simple process, easy control, low equipment investment and operating costs, energy saving and consumption reduction, high reaction efficiency, relaxed reaction conditions, and the bed is less prone to overheating or temperature loss under high loads. The system can maintain stable operation even with fluctuations in feed gas flow rate of 0–120%.

The low-NOX-emission hydrogen-ammonia fusion micro gas turbine comprises a combustion chamber, a plurality of secondary air inlet holes are formed in the wall face of the combustion chamber, and the secondary air inlet holes are used for feeding part of compressed air and a first path of liquid ammonia fuel into the combustion chamber; a cracking chamber with a cracked gas outlet is arranged in the combustion chamber and located at one end close to the turbine, a catalyst is arranged in the cracking chamber, a second path of liquid ammonia fuel is fed into the cracking chamber, the second path of liquid ammonia fuel is cracked under the action of heat energy of the combustion chamber and the catalyst, and the second path of liquid ammonia fuel is fed into the cracking chamber. And obtained cracked gas enters the combustion chamber through the cracked gas outlet to be combusted. High-temperature flue gas generated by the combustion chamber is used as a heat source, ammonia is catalytically cracked in the combustion chamber of the gas turbine to generate hydrogen-rich mixed gas, the hydrogen-rich mixed gas is introduced into the combustion chamber to serve as a combustion improver, ammonia combustion flame is stabilized, NOX emission is reduced, and meanwhile stepped utilization of energy is achieved.

A toxic ammonia gas absorption system for a liquid ammonia fuel ship, comprising a toxic ammonia gas release source (100), an ammonia gas absorption tank (200), an ammonia gas guide pipe, and a diluted ammonia gas discharge pipe. The ammonia gas absorption tank (200) is provided with an absorbent (201), a gas diffusion layer (202), a liquid level switch (203), a gas phase space (206) and a temperature control device (207). The present system can improve the safety, environmental friendliness and economy of ships using ammonia fuel.

The invention relates to the technical field of chemical engineering, in particular to a food-grade ammonia water production system and method. The food-grade ammonia water production system comprises a liquid ammonia tank, a first heat exchanger, a first buffer device, an absorption tower and a second heat exchanger which are connected in sequence; the first heat exchanger is used for heating liquid ammonia to form ammonia gas; the second heat exchanger is used for cooling the ammonia water; an ammonia gas pipeline is arranged between the first buffer device and the absorption tower, and a pressure sensor is arranged on the ammonia gas pipeline; a second buffer device is arranged between the pressure sensor and the ammonia gas pipeline; the first buffer device internally comprises an air inlet pipe, a plurality of distribution pipes arranged in parallel and an exhaust pipe which are connected in sequence; the pipe diameter of the distribution pipe is smaller than that of the gas inlet pipe or the gas outlet pipe. The food-grade ammonia water production system provided by the invention can reduce the fluctuation amplitude of pipeline pressure caused by the process of forming ammonia gas from liquid ammonia, improves the production stability, and enables the detected pipeline pressure value to have a higher reference value.

According to the decontaminating agent for ammonia gas decontamination and the preparation method thereof, the whole decontaminating agent is weakly acidic, and ammonia molecules are converted into ammonia ions by utilizing a chemical reaction between organic acid and ammonia, so that the mass transfer driving force is increased, the absorption efficiency of water mist to ammonia is remarkably improved, and the effect of thoroughly decontaminating ammonia is achieved; by adding the surfactant, the solubility of the organic acid can be improved, the corrosivity of the decontaminating agent can be further reduced, the flowing property and the anti-freezing property of the decontaminating agent can be improved, ammonia gas leaked from liquid ammonia evaporation can be quickly neutralized, and the efficient decontaminating effect is achieved. The decontaminating agent is simple in preparation process, the organic acid, the low-alcohol and the surfactant are added, so that the decontaminating agent has a larger consumption amount on ammonia gas and a faster decontaminating capacity, the decontaminating efficiency is high, decontaminating is thorough, a decontaminating product is non-toxic and harmless, and the decontaminating agent is an economical, efficient and environment-friendly decontaminating agent, can be better applied to the decontaminating field and has wide application prospects. The material can be used as a fire-fighting decontamination material.

The solvated metal particle-coating system includes a metal additive and a polar outer-sphere electron transferring solvent. The metal additive is solvated in the polar outer-sphere electron transferring solvent. The polar outer-sphere electron transferring solvent may include liquid ammonia, methylamine, and / or hexamethylphosphoramide. The metal additive may include an alkali metal and / or an alkaline earth metal. The solvated metal additive within the polar outer-sphere electron transferring solvent may be used to coat a metal particle and / or a metalloid particle as a layer. As the polar outer-sphere electron transferring solvent evaporates, the solvated metal additive is coupled to the metal particle and / or the metalloid particle.