15 results about "Gaseous ammonia" patented technology

A method for combustion of an ammonia mixed fuel, according to one embodiment, comprises: a fuel adjustment step of preparing a mixed fuel containing ammonia and hydrogen by mixing ammonia and hydrogen such that hydrogen is mixed in an amount in excess of gaseous ammonia on a volume basis; and a combustion step of supplying the mixed fuel and oxygen to an ammonia combustion catalyst to perform combustion.

The present application provides a kind of light weight liquid ammonia storage tank filling and discharging performance test platform, including light weight composite reinforced corrosion-resistant storage tank system, input or export gaseous ammonia to the storage tank to be tested by the ammonia supply and transportation system connected therewith;Light weight composite reinforced corrosion-resistant storage tank system is internally provided with multi-zone temperature monitoring system for real-time monitoring of temperature variation at different positions inside the storage tank;The light weight composite reinforced corrosion-resistant storage tank system is internally provided with internal gas circulation homogenization system for promoting gas flow inside the storage tank and improving temperature distribution;The control and safety protection system is used for real-time acquisition and regulation of storage tank internal pressure, liquid level, flow and temperature parameters, and safety pressure relief and protection under abnormal conditions;The present application can monitor and control the liquefaction process after ammonia is filled into the storage tank and the vaporization process when liquid ammonia is output, so as to test and analyze the temperature distribution, liquid level change, flow change and internal flow state during filling and discharging process.

The application provides a fuel supply system and method suitable for liquid ammonia and gaseous ammonia, and relates to the field of ammonia fuel supply. The fuel supply system comprises a liquid ammonia supply module, a liquid ammonia delivery module, a gaseous ammonia delivery module and a machine belt pipeline. The liquid ammonia supply module is connected with the machine belt pipeline through the liquid ammonia delivery module and the gaseous ammonia delivery module, the machine belt pipeline is used for delivering fuel to a use terminal, and the liquid ammonia delivery module and the gaseous ammonia delivery module are connected in parallel. The liquid ammonia delivery module comprises a first stop valve and a pressurizing pump, and the first stop valve and the pressurizing pump are connected between the liquid ammonia supply module and the machine belt pipeline. The gaseous ammonia delivery module comprises a second stop valve, a heat exchanger and a pressure regulating valve group, the second stop valve, the heat exchanger and the pressure regulating valve group are connected between the liquid ammonia supply module and the machine belt pipeline, and the heat exchanger is used for converting liquid ammonia into gaseous ammonia.

The present application relates to a kind of ammonia oxidation catalyst and its preparation method and application, the catalyst includes outer layer structure, intermediate layer structure and inner layer structure, wherein, outer layer structure includes Mo, V, Co, optional metal Bi and metal A, wherein the metal A is selected from one or more of Cs, K, Cu;Intermediate layer structure includes Mo, Cr, optional Sb, optional W and element X, wherein metal X is selected from one or more of Fe, P, Na, Mg;Inner layer structure includes Mo, Al, Si and optional element Y, element Y is selected from one or more of Sb, Sr, Ru, B, Ce.The catalyst has the characteristics of high activity, high thermal conductivity, which is applied to the reaction process of gaseous ammonia oxidation hydrocarbon or alcohol to prepare nitrile compound, and the catalyst has good stability, long service life, and high selectivity, high yield.

This utility model discloses a liquid ammonia and gaseous ammonia separation device, including a shell and a gas guiding section. The shell has a separation chamber and an air inlet, the air inlet being connected to the separation chamber and tangent to its inner wall. The gas guiding section is connected to the shell and located within the separation chamber. The gas guiding section has a gas guiding channel with a guiding end connecting to the separation chamber and an outlet for connecting to the outside of the shell. The outlet, air inlet, and guiding end are arranged sequentially near the bottom of the separation chamber. This design can mitigate the adverse effects of reduced flow rate, improve gas-liquid separation efficiency, and has a simple structure and low cost.

A method for embedding sulfur into conductive carbon is provided. Elemental sulfur is dissolved in liquid ammonia to form a sulfur-ammonia solution. Conductive carbon is soaked in the sulfur-ammonia solution to embed the conductive carbon with the dissolved sulfur. The liquid ammonia in the sulfur-ammonia solution can be removed as gaseous ammonia to yield sulfur-embedded conductive carbon. The sulfur-embedded conductive carbon can be used to manufacture sulfur cathodes. Such sulfur cathodes and batteries incorporating such sulfur cathodes are provided.

This application relates to an absorption refrigeration system for a low-temperature methanol washing device, comprising a liquid ammonia evaporation unit, an absorption pressurization unit, a heating and desorption unit, and a gaseous ammonia condensation unit arranged sequentially. The absorption pressurization unit is used to spray and absorb the gaseous ammonia after phase change from the liquid ammonia evaporation unit, and to pressurize the rich liquid after ammonia absorption. The heating and desorption unit is used to heat the pressurized rich liquid and desorb ammonia to release pressurized gaseous ammonia. The gaseous ammonia condensation unit is used to receive and condense the pressurized gaseous ammonia from the heating and desorption unit, and to recycle the condensed liquid ammonia back to the liquid ammonia evaporation unit. This invention can effectively reduce the energy consumption of the ice machine system and improve the steam thermal energy utilization rate. By combining the steam turbine of the ice machine system with the absorption refrigeration system, it can reduce the energy consumption of the ice machine or completely replace the gaseous ammonia compression and condensation performed in traditional ice machine systems.

This application discloses a system and process for producing liquid ammonia from ammonia-containing condensate, including a carbon dioxide separation component, a high-gravity ammonia desorption component, a gaseous ammonia condensation component, a high-gravity ammonia refining component, and a sulfur adsorption component. The carbon dioxide separation component includes a carbon dioxide separation tower body and a high-gravity scrubber. Ammonia-containing condensate from coal-water slurry gasification enters the carbon dioxide separation tower body, where carbon dioxide and some hydrogen sulfide are removed. During this process, acidic gas from the top of the carbon dioxide separation tower enters the high-gravity scrubber, which absorbs ammonia from the acidic gas through scrubbing water. The scrubber then returns the ammonia-containing scrubbing water to the carbon dioxide separation tower body and sends the acidic gas to an external sulfur recovery component. Subsequently, the ammonia-containing condensate enters the remaining components. This system can produce liquid ammonia with a mass fraction of 99.8% and ammonia water with a mass fraction of 20% to 50% as a byproduct.

A ship includes a fuel tank storing ammonia fuel, an engine to which ammonia stored in the fuel tank is supplied and which combusts the ammonia, a first tank for collecting liquid ammonia discharged from the engine, and a second tank for collecting gaseous ammonia discharged from the engine, wherein the liquid ammonia is first collected in the first tank and the gaseous ammonia is then collected in the second tank.

The invention relates to a flame hydrolysis process for producing metal and / or metalloid oxides by means of a burner having a burner head with at least two gas channels and an outlet end, wherein the metal or metalloid oxide is selected from the group consisting of oxides of aluminum (Al), titanium (Ti), zirconium (Zr), yttrium (Y), lithium (Li), magnesium (Mg), lanthanum (La), cerium (Ce), iron (Fe), zinc (Zn) and silicon (Si) or mixtures thereof, the process comprising the steps of providing an oxygen-containing gas, a fuel gas and a gaseous metal precursor and / or a mixture containing a gaseous metal precursor to the burner head, providing a flame by combusting at least a portion of the oxygen-containing gas and the fuel gas at the outlet end of the burner head, releasing the MP and / or the MP-containing mixture into the provided flame, and providing gaseous ammonia (NH3) and / or a gaseous mixture containing ammonia (NH3) in at least one gas channel to the outlet end of the burner head and releasing the gaseous ammonia into the flame, and wherein ammonia (NH3) is not pre-mixed with the metal precursor before the outlet end of the burner head.

This utility model discloses a gaseous ammonia buffer tank, including a tank body and a buffering mechanism. The tank body has a buffer cavity, an inlet end, and an outlet end, both of which are connected to the buffer cavity. The buffering mechanism includes a guide component, multiple elastic components, and a blocking component. The guide component is disposed within the buffer cavity and has a guide channel, one end of which is connected to the inlet end. The multiple elastic components are mounted on the guide component and connected to the blocking component, with the blocking component corresponding to the other end of the guide channel. When the blocking component is subjected to the impact force of gaseous ammonia, it can move relative to the guide component. The elastic components can reduce the impact force on the blocking component and drive it to reset. This solves the problem in the prior art where gaseous ammonia easily generates an impact force on the buffer tank when it is delivered, causing the buffer tank to vibrate.

The utility model discloses a kind of protective devices for ammonia storage tank breather valve vent pipe orifice, belong to chemical industry environmental protection equipment technical field, including horn mouth part, wire mesh demister, liquid baffle, spray nozzle, metal mesh type firestop core, front collection bag and rear collection bag, horn mouth part is connected at the breather valve vent pipe end, for reducing gas flow rate;Wire mesh demister is located in the straight pipe portion downstream of horn mouth part, for intercepting liquid droplet entrained in gaseous ammonia;Liquid baffle is located at the rear side of wire mesh demister, for gas-liquid baffle separation;Spray nozzle is located at the top of straight pipe portion, into desalted water to absorb gaseous ammonia;Metal mesh type firestop core is integrated in the rear end of wire mesh demister, for blocking fire source;Front collection bag and rear collection bag are respectively located at the front and rear side of wire mesh demister, connected to recovery tank by drainage pipeline.The five-stage protection mechanism of flared deceleration→wire mesh demisting→spray absorption→fire prevention and explosion prevention→two-stage collection, realize the efficient recovery and safety control of ammonia.

The present invention relates to a fuel processing system and a ship including same. The fuel processing system comprises: a fuel supply unit for supplying toxic fuel to a demand source; a recovery processing unit for processing the toxic fuel recovered from the demand source; a purging unit for supplying a purging material to at least a part of the fuel supply unit and the demand source; a separation unit for recovering the purging material mixed with liquid and gaseous ammonia during purging to separate ammonia from the purging material; and a leakage processing unit for processing the toxic fuel leaking from the fuel supply unit, wherein the leakage processing unit includes: a leakage detection unit for detecting leakage of the fuel supply unit; and a leakage transmission unit for blocking the supply of the toxic fuel from the fuel supply unit, closing one point upstream of a leakage point, and connecting the downstream of the leakage point to the separation unit.

The application provides a pump-free self-pressure ammonia supplement device for an ammonia ice machine system, and belongs to the technical field of ammonia ice machine systems.The pump-free self-pressure ammonia supplement device comprises a supporting mechanism, a liquid ammonia storage tank is horizontally and fixedly arranged on the top surface of the supporting mechanism, an ammonia ice machine outlet liquid ammonia storage tank is horizontally and fixedly arranged on the top surface of the supporting mechanism, an ammonia ice machine three-section inlet separation tank is horizontally and fixedly arranged on the top surface of the supporting mechanism, a liquid ammonia pump is fixedly connected to the bottom surface of the supporting mechanism, a liquid level meter of the liquid ammonia storage tank is fixedly arranged on the top surface of the liquid ammonia storage tank, and a pressure gauge of the liquid ammonia storage tank is fixedly arranged on the top surface of the liquid ammonia storage tank.The device realizes self-pressure supplement of gaseous ammonia by using the natural pressure difference between the liquid ammonia storage tank and the ammonia ice machine three-section inlet separation tank (0.1 MPa-0.6 MPa), and cancels the liquid ammonia pump required by traditional ammonia supplement, thereby avoiding ammonia leakage caused by medium corrosion and equipment wear of the ammonia pump machine seal from the root, and greatly improving the safety of the ammonia supplement process.

The fuel supply apparatus includes a main ammonia line through which liquid ammonia flows; a vaporizer connected to an end portion of the main ammonia line, which heats a heating medium and the liquid ammonia in heat exchange with each other to heat the liquid ammonia and thereby vaporize the liquid ammonia; a gaseous ammonia line connected to the vaporizer, which guides gaseous ammonia, which is ammonia vaporized by the vaporizer, as fuel to a combustor of a gas turbine; a liquid ammonia line, which guides the liquid ammonia that is not heat-exchanged with the heating medium in the vaporizer, as fuel to the combustor; and a switcher that switches an ammonia supply state between a first state in which the gaseous ammonia is guided from the gaseous ammonia line to the combustor and a second state in which the liquid ammonia is guided from the liquid ammonia line to the combustor.