241 results about "Ammonia production" patented technology

Systems and methods for synthesizing ammonia include one or more electrochemical hydrogen pumps to recover excess hydrogen gas from the ammonia synthesis product stream. The systems and methods improve overall yield and efficiency of the ammonia production process by separating and purifying hydrogen gas that otherwise would be lost.

The invention discloses a carboxyl-functionalized porous organic polymer, a preparation method thereof and application of the carboxyl-functionalized porous organic polymer in ammonia gas adsorption separation and sensing. The polymer is obtained by free radical polymerization, hydrolysis and acidification of monomers containing vinyl and ester groups, and has a mesoporous structure and a skeleton carboxyl functional group. The preparation method is simple and mild in condition. The polymer has excellent adsorption selectivity and high adsorption capacity on ammonia gas, the static adsorption capacity on the ammonia gas under the conditions of 298 K and 1 bar is not lower than 6.5 mmol / g, the ammonia gas can be efficiently separated from NH / N / H and NH / COs mixed gas, and the cycling stability is good. An ammonia gas sensor prepared by taking the graphene oxide as a sensitive material has linear or piecewise linear response to ammonia gas with the concentration of 1-100 ppm at room temperature, the detection limit is lower than 30 ppb, and the selectivity is excellent. The invention overcomes the defects of the existing ammonia gas adsorption separation material and sensor, has important significance for optimizing the ammonia production process and reducing pollution, and has wide application prospects.

The invention relates to a urea hydrolysis ammonia preparation reaction device, belongs to the technical field of ammonia preparation reaction, and aims to solve the problems that a scraper blade is in frictional contact with a hard crystal layer for a long time, blade abrasion, structural deformation and the like are easy to occur, and the scraper blade needs to be replaced by dismounting related parts after shutdown, the urea hydrolysis ammonia preparation reaction device comprises a reaction tank, and a hollow pipe is rotatably connected in the reaction tank; a driving part is installed at one end of the reaction tank, the driving part is in transmission connection with the hollow pipe, an air pump is further installed at one end of the reaction tank, the output end of the air pump is rotationally connected with the hollow pipe, a pushing part is installed in the hollow pipe, and transverse pipes are installed on the two sides of the hollow pipe in a communicating mode. When the scraper is used, the abraded first scraper can be retracted into the shell, meanwhile, the standby second scraper is pushed out and positioned, the whole process is completed in the running state of the device, the production continuity and the equipment utilization rate are greatly improved, and the labor intensity of workers and the operation and maintenance cost are remarkably reduced.

The application discloses an energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method, and particularly comprises the following steps: S1, a raw material gas is separated from a pressurized coal gasification methanol device as alcohol pre-gas and is sent to a shift device of synthetic ammonia through a sealed pipeline; S2, when entering the shift device, the alcohol pre-gas is mixed with a crude synthetic gas to form a mixed gas, then high-pressure steam is introduced to adjust the water-gas and increase the mixed temperature, carbon monoxide is reacted with water vapor in the shift device, and hydrogen gas is prepared as a shift gas; S3, the shift gas is subjected to low-temperature methanol washing and liquid nitrogen washing, then nitrogen gas produced by air separation is added, a synthetic gas is prepared, and the synthetic gas is sent to an ammonia synthesis device. The energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method is adopted, raw material gas is comprehensively utilized in an energy-saving mode, the methanol and synthetic ammonia production yield is flexibly adjusted, and enterprise benefits are improved.

The invention discloses a hydrolyzer ammonia production and denitration whole-process cooperative control method based on NOx prediction, and the method comprises the steps: collecting the real-time state parameters of the operation of a boiler, inputting the real-time state parameters into an LSTM neural network prediction model, and obtaining an SCR inlet NOx concentration prediction value which is earlier than the actual measurement; on the basis of the SCR inlet NOx concentration predicted value and in combination with the load change parameters of the boiler, an advanced ammonia demand signal is obtained through calculation; and synchronously generating an ammonia spraying optimization instruction for controlling an SCR denitration system and an ammonia production optimization instruction for controlling a hydrolyzer ammonia production system by using the advanced ammonia demand signal. The advanced ammonia demand signal capable of guiding the hydrolyzer ammonia production system and the SCR denitration system to carry out advanced actions at the same time is generated by calculating the NOx concentration predicted value at the SCR inlet, supply and demand cooperation and advanced response of the ammonia production and denitration links are achieved, and the problems of ammonia spraying control lag and ammonia supply pressure fluctuation caused by measurement delay and system isolation are effectively solved.

The invention discloses a liquid metal-based catalyst with flowable amorphous cobalt active sites as well as a preparation method and application of the liquid metal-based catalyst. The spherical gallium-based liquid metal loaded amorphous cobalt nanosheet material is synthesized by using a sodium borohydride ice bath method. Due to the optimization of the synthesis process, the amorphous cobalt nanosheets are uniformly distributed on the surfaces of the liquid gallium balls, are small in size, are high in utilization rate and are not easy to agglomerate; the intrinsic flow characteristic of the liquid metal gallium realizes the efficient reverse hydrogen overflow effect, optimizes the formation process of a catalytic reaction intermediate, and accelerates the formation of the intermediate. The composite material has the advantages of low overpotential, high Faraday efficiency, high ammonia production rate, good stability and the like during nitrate electrocatalytic reduction reaction, meets the requirements of production and use, and is low in preparation cost.

Systems and methods for synthesizing ammonia include one or more electrochemical hydrogen pumps to recover excess hydrogen gas from the ammonia synthesis product stream. The systems and methods improve overall yield and efficiency of the ammonia production process by separating and purifying hydrogen gas that otherwise would be lost.

The invention relates to an enzyme-mimic CeO2-based multi-active-site catalyst, a preparation method and application thereof, an electrolytic tank and a battery. CeO2 nanorods are synthesized through hydrothermal and high-temperature pyrolysis methods, and then metal ions are anchored to the surfaces of the CeO2 nanorods through strong interaction of carriers; metal nanoclusters and nanoparticles with specific sizes are synthesized, and then chemical vapor deposition reaction is performed through sodium hypophosphite, so that the bionic nano-enzyme electrocatalyst with multiple active sites is obtained. The multi-active-site catalytic material provided by the invention has high selectivity of ammonia production from nitrate radicals, ammonia production efficiency and Faraday efficiency when being used as a cathode. When the RuO2 is used as an anode, in an alkaline water electrolysis reaction, when the current density is 50 mA / cm < 2 >, the overpotential is 288 mV, which is far better than that of commercial RuO2. Based on excellent oxidation and reduction performance, the zinc nitrate battery has high power density, high ammonia yield and good charge-discharge cycle stability, and nitrate removal, ammonia production and power supply can be achieved at the same time.

The invention relates to the technical field of new energy and renewable energy sources, and discloses a wind-light-hydrogen-ammonia source network load storage integrated park synthetic ammonia flexible control method, which comprises the following steps of: performing multistable load setting optimization by taking the maximum daily net income as a target through wind-light prediction, time-of-use electricity price, hydrogen storage capacity and ammonia market demand; obtaining a plurality of discrete steady-state loads and operation durations thereof; a rare earth doped catalyst and a synthesis tower are adopted for cooperative control, the low-load activity interval is widened, and operation parameters are optimized; executing ultra-short-term, short-term and medium-and-long-term source network load storage cooperative scheduling, and cooperating with security boundary adaptive control; and constructing an electricity-hydrogen-ammonia integrated digital twinborn model, realizing control parameters, and realizing whole-process closed-loop rolling optimization. According to the method, through multi-steady-state load setting optimization, the operation condition of the ammonia synthesis device is dispersed into a plurality of steady-state load grades, the operation duration is reasonably arranged, park source network load storage multi-element collaboration is achieved, and the overall ammonia production cost is reduced.

The invention relates to the technical field of energy scheduling, in particular to a dynamic scheduling method for a green electricity ammonia production system based on deep reinforcement learning. According to the big name, a deep reinforcement learning agent is constructed, a near-end strategy optimization algorithm is adopted, and training is carried out by maximizing an innovative composite reward function. According to the composite reward function, accumulated green penalty constraints and multiple high-risk aversion penalty terms are introduced, and complex economic, physical and policy constraints are coupled and optimized. According to the method, multiple constraints can be effectively treated, the load smoothness and energy storage dynamic balance of the electrolytic cell are realized, the accumulated electricity purchase quantity is strictly controlled to be below a preset proportion, the problems of greenness, stability and economy in a high green electricity ammonia production project are solved, and the continuity of back-end production is guaranteed.

The invention provides a preparation method of a cobalt-based intermetallic carbide material and application of the cobalt-based intermetallic carbide material in a preparation method of an electrocatalytic nitrate reduction electrolytic tank or a zinc-nitrate battery. The preparation method of the cobalt-based intermetallic carbide material comprises the following steps that cobalt chloride hexahydrate, indium chloride tetrahydrate, dicyandiamide and ketjen black are ground and mixed and then put into a tubular furnace for thermal annealing reduction, and the cobalt-based intermetallic carbide material is obtained. According to the method, cobalt-based intermetallic carbide material Co3InC0.75 powder is prepared into slurry, the slurry is dropped on carbon paper to be used for an electro-catalysis reaction, the material strengthens nitrate adsorption and water decomposition and inhibits a hydrogen evolution reaction, and therefore the performance of electro-catalysis of nitrate reduction to produce ammonia is improved.

The invention relates to the technical field of industrial control, in particular to a synthetic ammonia production control method, system and equipment, a medium and a product. The method comprises the following steps: acquiring production modeling data of a synthetic ammonia field section, performing unsupervised analysis on the production modeling data through a preset big data model, determining key features and an analysis result of the key features in a synthetic ammonia production process, performing visualization processing on the key features, generating a visual chart, and displaying the visual chart on a database. Therefore, semantic analysis and causal reasoning are carried out on the visual chart and the analysis result through a preset large language model, a target optimization strategy is generated, optimization control is carried out on a synthetic ammonia production site, and the production efficiency of synthetic ammonia is improved.

The invention discloses an integral reactor for ammonia synthesis, and relates to the technical field of ammonia synthesis equipment. The reactor comprises catalyst layers, heat exchange layers and interlayer sealing structures, wherein the catalyst layers and the heat exchange layers are alternately stacked. The catalyst layer adopts a honeycomb integral ruthenium-based catalyst with porosity greater than or equal to 70%, the cross section of a pore channel is a regular hexagon, and the diameter is 1-5mm; the heat exchange layer is provided with a matched pore channel structure and is made of a metal material with the heat conductivity coefficient larger than or equal to 16 W / (m.K), and a corrugated micro-channel network is arranged in the heat exchange layer. And the interlayer sealing structure comprises a nickel foil gasket and an annular hoop. Fresh feed gas enters from the first gas inlet of the heat exchange layer for preheating and enters the catalyst layer for reaction through the first gas outlet, a reaction product is cooled through the adjacent heat exchange layer and then is discharged through the second gas outlet, and reaction-heat exchange deep coupling is achieved. The catalyst utilization rate is increased to 85% or above, the axial temperature difference of the bed is smaller than or equal to 15 DEG C, the radial temperature difference is smaller than or equal to 10 DEG C, the flow fluctuation response time is shortened to be within 10 minutes, the energy consumption is reduced by 12% under the low-pressure condition of 3-5 MPa, and the method is particularly suitable for distributed green ammonia production.

The utility model relates to a molecular sieve regeneration device for liquid nitrogen wash purified gas of a synthetic ammonia production device. In the device, a low-pressure nitrogen pipeline is connected with a molecular sieve adsorber, the bottom of the molecular sieve adsorber is connected with a nitrogen heater through a pipeline, and the nitrogen heater is connected to a phosphoric acid device hot blast stove through a fuel gas pipeline. The top of the molecular sieve adsorber is connected with the liquid nitrogen washing cold box. A track ball valve I is arranged on a connecting pipeline between the bottom of the molecular sieve adsorber and the nitrogen heater; and a regulating valve II is arranged on the nitrogen heater and the fuel gas pipeline. According to the utility model, high-concentration CO adsorbed by the molecular sieve is sent to the hot blast stove of the phosphoric acid device for combustion at the initial stage of the regeneration preheating stage of the liquid nitrogen wash molecular sieve, thereby improving the automatic control level of molecular sieve regeneration programs; the problem of fluctuation of a low first washing device during regeneration of the molecular sieve is effectively solved, the problem that a combustible poisonous gas detector gives an alarm due to direct emptying of high CO during regeneration is thoroughly solved, and part of energy is recycled.

The utility model discloses a urea hydrolysis ammonia production system capable of recycling heat. The urea hydrolysis ammonia production system comprises a urea hydrolysis reactor, an energy-saving heat exchanger, a steam-water flash tank, a steam-driven pump, a drain tank, a urea dissolving tank and a urea solution storage tank, a steam drain outlet of the urea hydrolysis reactor is communicated with a heat source side inlet of the energy-saving heat exchanger, and a heat source side outlet is communicated with an inlet of the steam-water flash tank; a cold source side inlet of the energy-saving heat exchanger is communicated with an outlet of the urea solution delivery pump, and a cold source side outlet is communicated with a urea solution inlet of the urea hydrolysis reactor; an outlet of the steam-water flash tank is communicated with an inlet of the steam-driven pump, and an outlet of the steam-driven pump is communicated with an inlet of the drain tank. The device has the beneficial effects that the urea solution is preheated and the urea solution in the urea dissolving tank and the urea solution storage tank is heated by utilizing the steam drain of the urea hydrolysis reactor, the vibration of the drain tank and the visual pollution of white smoke are eliminated, the heat of the steam drain is recovered, the heat utilization rate is improved, and the energy consumption and the operation cost are reduced.

The application relates to a ternary metal nanocatalyst and a preparation method and application thereof, and relates to the field of catalytic chemistry. The specific steps of the method are as follows: soluble iron salt, soluble nickel salt and soluble aluminum salt are added into deionized water, and a carbon carrier is added as a substrate and is subjected to ultrasonic treatment. An alkaline solution containing sodium carbonate and sodium hydroxide is added dropwise into the prepared metal salt solution under vigorous stirring. The metal salt suspension is aged; the obtained solution is centrifuged, the solid is collected and vacuum dried and ground. The activated carbon loaded iron-nickel-aluminum ternary metal nanocatalyst can realize the complementary advantages among multiple components, and the synergistic mechanism makes the iron-nickel-aluminum catalyst exhibit better ammonia production rate and selectivity than single metal components in a neutral environment, and can be used for electrocatalytic nitrate reduction to prepare ammonia.

The utility model relates to the technical field of electro-catalysis ammonia production, in particular to an electrolysis device for ammonia production by alkaline electrolysis of nitrate, which comprises a plurality of electrolysis units and end plates positioned at two ends, the plurality of electrolysis units are overlapped between the two groups of end plates, an anode plate is arranged between the left end plate and the electrolysis unit, and a cathode plate is arranged between the right end plate and the electrolysis unit. A cathode plate is arranged between the right side end plate and the electrolysis unit, and electrode terminals are fixedly arranged on the upper sides of the anode plate and the cathode plate; the electrolysis unit is composed of two sets of bipolar electrode plates, two sets of partition plates and electrolysis cavity grooves, the two sets of partition plates are arranged between the two sets of bipolar electrode plates, the electrolysis cavity grooves are formed in the two sets of partition plates, a diaphragm is arranged between the two sets of partition plates, an anode catalyst layer is arranged on the left side of the diaphragm, and a cathode catalyst layer is arranged on the right side of the diaphragm. According to the utility model, the copper / oxygen double-defect Cu2O-coated Cu heterojunction catalytic electrode is adopted, so that the catalytic activity and selectivity are improved, the energy consumption and the cost are reduced, and a new technical path is provided for green low-carbon ammonia synthesis.

The invention discloses a new energy off-grid green, hydrogen and ammonia production integrated system coupled with liquid-air energy storage and power generation, and relates to the technical field of new energy comprehensive utilization and chemical production. A wind-light-electricity new energy power generation module converts wind energy and solar energy into electric energy, and a liquid air energy storage module stores energy through air compression-liquefaction-expansion; the hydrogen production module utilizes electric energy to electrolyze water to produce hydrogen, the air separation module produces nitrogen and supplies the nitrogen to the ammonia production module, and the ammonia production module reacts hydrogen and nitrogen to synthesize green ammonia. The problems of intermittency and instability of new energy power generation are effectively solved, integrated production of green hydrogen and green ammonia under the off-grid condition is achieved, dependence on traditional energy and external infrastructures is reduced, the production cost and carbon emission are reduced, and the energy utilization efficiency is improved; meanwhile, the circulating system of the ammonia production module improves the utilization rate of raw materials and improves the economic benefits of the system.

The invention provides a gas diffusion electrode device for electrochemical lithium-mediated ammonia synthesis and an electrochemical ammonia synthesis method, and belongs to the technical field of electrochemical ammonia synthesis. The gas diffusion electrode device comprises a nitrogen runner, a sealing gasket, a working electrode, a catholyte chamber, a diaphragm, an anolyte chamber, an anode catalyst, a hydrogen runner and an electrolyte, the electrolyte comprises a lithium salt, an organic solvent, a proton shuttling agent and an interface additive. According to the invention, high nitrogen transmission is realized by adopting a circulating type gas diffusion electrode device, and a three-phase interface chemical environment of gas, electrolyte and the gas diffusion electrode is regulated and controlled by an interface additive, so that the ammonia production rate and the Faraday efficiency are remarkably improved, and continuous and efficient nitrogen reduction reaction is realized at normal temperature and normal pressure.

Provided is an ammonia production apparatus comprising: a first electrolytic cell in which at least a portion of a first electrolytic medium is housed; a first electrode disposed in the first electrolytic cell; a second electrolytic cell in which at least a portion of a second electrolytic medium is housed; a second electrode disposed in the second electrolytic cell; a separator provided between the first electrolytic cell and the second electrolytic cell; and a first separation part separating ammonia from the second electrolytic medium. The first electrolytic cell is configured such that a proton source contained in the first electrolytic medium is oxidized at the first electrode, protons are generated, and, in the second electrolytic medium, ammonia and hydrogen are generated from nitrogen, protons, and electrons in the presence of a nitrogen activation catalyst. The first separation part is configured such that nitrogen and hydrogen that have been separated from the ammonia are supplied to the first electrolytic medium.

An active catalyst for ammonia synthesis is provided that is integrated in a composition or complex with a dedicated sorbent such that the catalyst portion and sorbent portion are in direct intimate contact, which overcomes the thermodynamic limits for conversion. The sorbent may include a metal halide absorbent, zeolite absorbent, other material absorbent or absorbent to capture ammonia in close molecular contact or near molecular contact with the catalyst in the production of ammonia, where the composition / complex may be provided in the form of a granular or pill structure. By removing the ammonia substantially while forming the ammonia, the forward reaction for producing the ammonia can continue with little attenuation, such that high net conversion is achieved in a single pass or accumulation within the segmented reactor while operating in series.

In a process for producing ammonia synthesis gas by electrolysis, comprising feeding a mixture of steam and compressed air into a first of a series of electrolysis units and passing it together with air through an outlet of one electrolysis unit to an inlet of the next electrolysis unit, the electrolysis units operating in an endothermic mode, and providing a nitrogen portion of the syngas by combusting hydrogen produced by steam electrolysis with air within or between the electrolysis units. The electrolysis unit is preferably a solid oxide electrolytic cell (SOEC) stack.

The invention discloses an ammonia carbamate pyrolysis coupling carbon capture device which comprises a tower body, and the tower body comprises a gas inlet section, a pyrolysis section, a capture section and an exhaust section which are sequentially arranged from bottom to top. Carbon dioxide in pyrolysis gas is separated, so that competitive adsorption of carbon dioxide on the surface of a catalyst in the SCR denitration system is reduced, and the efficiency of the SCR denitration system is improved. And meanwhile, a high-temperature condition required in the traditional process of preparing ammonia from urea is avoided, so that the energy consumption cost of a denitration system is reduced. In addition, the problem that the ammonium carbamate is easy to cake in a low-temperature and high-humidity environment or a severe-temperature-fluctuation environment due to the fact that the temperature is close to or exceeds 25 DEG C in the denitration process is effectively avoided, and the risks of pipeline blockage and difficult decomposition are reduced. Compared with urea ammonia preparation, the ammonia preparation efficiency is improved by 5.0%-24.8% and averagely improved by 14.9%, the ammonia preparation energy consumption is reduced by 35%-40.6%, and meanwhile, the denitration efficiency of the generated mixed gas entering the flue gas selective catalytic denitration reactor can be improved by 2.5%-3.2%.

The application provides a kind of multi-unit urea hydrolysis ammonia production system coordinated control method and system, method includes the following steps: with the DCS system linkage of unit control, real-time acquisition each unit key operating parameter and hydrolysis ammonia production system key parameter;According to the key operating parameter of each unit and the key parameter of hydrolysis ammonia production system, dynamic load distribution model, steam consumption model and economic operation model are established;According to the output / ammonia consumption of hydrolysis reactor of dynamic load distribution model, the opening of urea solution feed valve of hydrolysis reactor and operating temperature are controlled according to the output / ammonia consumption of hydrolysis reactor;According to steam consumption model, obtain the steam consumption, and control the opening of steam regulating valve according to the steam consumption;According to economic operation model, obtain the optimal solution of the lowest total cost between the number of hydrolysis reactor operation and start-stop times.The technical effect of the application is that the hydrolysis reactor can be safely operated to meet the ammonia supply demand of the unit, and the economic operation can be realized.

A system and method for ammonia production is disclosed. A system may generate a synthesis gas from a hydrocarbon and subsequently produce ammonia from the synthesis gas. The system includes a recuper

Systems and methods for production of gaseous products utilizing reaction vessels that integrate catalytic reaction and sorbent -based separation processes. The systems and methods may include introducing a reactant gas within a vessel containing a catalyst and sorbent, whereby the catalyst facilitates conversion of the reactant gas into a product species and the product species is selectively sorbed by the sorbent; withdrawing a first effluent stream from the vessel; and withdrawing a second effluent stream from the vessel that is enriched in the product species relative to the first effluent stream. The systems and methods may additionally be implemented using multiple reaction vessels operating in coordinated cycles to allow for continuous production and may be used in some variations for ammonia production where nitrogen and hydrogen reactants are converted to ammonia.

This invention relates to the field of power system technology and discloses a capacity configuration optimization method, apparatus, equipment, medium, and program product. By acquiring multiple operating models and multiple installed capacity values, this invention establishes a synthetic ammonia production capacity relationship, enabling a comprehensive understanding of the operating characteristics and possible configurations of each part of the system. This, in turn, allows for the quantification of the relationship between synthetic ammonia production capacity and various system factors. Furthermore, by establishing total investment cost and total operation and maintenance cost relationships, the cost composition of the system in terms of investment and operation and maintenance can be clearly understood. Moreover, by establishing an objective function with the goal of minimizing the sales value of synthetic ammonia and solving it using a genetic algorithm, the capacity configuration of the system can be optimized as a whole. Therefore, the capacity configuration optimization result obtained in this way can achieve optimal economic efficiency for a renewable energy hydrogen production, synthetic ammonia, and hydrogen power generation system while ensuring system safety and reliability.

The present application relates to wastewater treatment technical field and disclose a kind of wastewater recycling system and method, the system includes collection tank, comprehensive reuse water tank, filtration unit and reuse water pump;Collection tank is used to collect hot wastewater, comprehensive reuse water tank is connected with collection tank and temperature regulation is carried out to hot wastewater, filtration unit is used to remove solid impurities, and reuse water pump is pumped to urea dissolving tank after filtration hot wastewater as dissolving make-up water, or pumped to pipeline flushing circuit as flushing water source.The present application is by constructing collection, temperature regulation, filtration, distribution processing link, realizes to the high-efficiency recovery and closed loop reuse of urea ammonia production area heat tracing drain and various drain, effectively saves industrial fresh water consumption, recycles waste heat resource, guarantees the water temperature stability of urea dissolving process, with the advantages of water and energy saving, high degree of automation, stable operation.

A system and method for decarbonizing ammonia production is disclosed. A system may generate a synthesis gas from a hydrocarbon and subsequently produce ammonia from the synthesis gas. The system may include a recuperative reformer for generating a first reformate from the hydrocarbon, and a downstream autothermal reformer for receiving the first reformate and generating a second reformate that can be further processed and synthesized into ammonia. Carbon dioxide emissions associated with producing the ammonia can be reduced by recovering heat in the recuperative reformer and returning recovered heat to the reforming reaction. This can reduce the duty of the recuperative reformer and correspondingly, the required heat output and associated firing of a combustion-based heat source used to provide heat to the recuperative reformer. Hydrogen from an external source can be added to the reformate stream to maintain a desirable hydrogen-to-nitrogen ratio thereof. The hydrogen can be green hydrogen.

The utility model discloses a natural gas desulfurization device and belongs to the technical field of ammonia production from natural gas. Comprising a desulfurization tank, an air inlet pipe arranged on the side wall of the desulfurization tank and an air outlet pipe arranged at the top end of the desulfurization tank, the push-pull opening is formed in the side wall of the desulfurization tank; the U-shaped groove is formed in the inner wall of the desulfurization tank; the rectangular frame is arranged in the U-shaped groove in a sliding manner; the desulfurization agent storage box is detachably arranged in the rectangular frame; the side, located in the push-pull opening, of the rectangular frame is connected with a baffle arranged outside the desulfurization tank, and the U-shaped groove is communicated with the push-pull opening. Through the synergistic effect of all the devices, the desulfurizing agent storage box can be conveniently taken out of the desulfurizing tank, so that a desulfurizing agent in the desulfurizing agent storage box can be conveniently replaced, and the purposes of conveniently replacing the desulfurizing agent and conveniently disassembling and assembling the desulfurizing agent storage box are achieved.