421 results about "Ammonia production" patented technology

A green ammonia production hydrogen load prediction method based on sparse attention variational Bayes comprises the following steps: acquiring historical data of a green ammonia electrolysis hydrogen production industry through an acquisition sensor, and dividing the historical data into a training set, a verification set and a test set; performing standardization processing on the training set, and constructing an SVAE soft measurement training model; determining a final objective function suitable for SVAE; and performing real-time online prediction on the output target variable by using the current input characteristic variable by adopting the trained SVAE. The SVAE combines CNNs, PSSAM and a cross attention mechanism, and captures a long-term dependency relationship and a complex mutual relationship in industrial data. An optimized objective function is formulated in combination with variational reasoning and a Monte Carlo method and is used for offline training. The SVAE has remarkable advantages in the process of accurately predicting the hydrogen flow and optimizing the production process of the green ammonia, the production efficiency is improved, and the energy consumption is reduced.

The invention provides a synthetic ammonia production load intelligent regulation and control method and system based on wind and light prediction, and relates to the technical field of energy and chemical production, and the method comprises the steps: collecting wind and light data and synthetic ammonia process data, and predicting a power generation power curve and a process parameter trend through a double-flow variational auto-encoder in combination with a residual connection mechanism; the method comprises the following steps: determining a technological parameter constraint and a safety boundary, establishing a technological parameter safety constraint model, obtaining a load regulation space, generating an optimal load instruction based on an optimization algorithm, and realizing intelligent load regulation and control through cascade PID (Proportion Integration Differentiation). According to the invention, accurate dynamic regulation and control of the load of the ammonia synthesis device are realized, and the wind and light absorption capability and the production efficiency are improved.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The invention relates to the technical field of industrial waste gas treatment, and discloses an acid gas treatment device and method for synthesis ammonia production, the acid gas treatment device for synthesis ammonia production comprises an absorption tower, a spraying system and a filler layer, the spraying system and the filler layer are installed in the absorption tower, and a receiving disc is arranged below the filler layer; the receiving disc comprises a plurality of annular plates which are vertically and coaxially distributed, the diameters of the annular plates are gradually reduced from top to bottom, the bottom of the annular plate on the lowermost side is fixedly connected with a drainage ring, the outer wall of the lower portion of the drainage ring is sleeved with a collecting cylinder, the inner wall of the drainage ring is fixedly connected with a flow slowing cylinder, and the lower portion of the flow slowing cylinder extends into the collecting cylinder. The solvent flows on the annular plate, and after the flow speed of the solvent is slowed down through the flow slowing cylinder, the solvent and impurities form a falling speed difference in the collecting cylinder, so that the impurities can effectively precipitate at the bottom in the collecting cylinder and are prevented from flowing to a filtering system of the recycling box along with the solvent, the burden of the filtering system is relieved, and the recycling efficiency of the solvent is improved.

The utility model discloses hydrogen purification equipment and an ammonia production system, and relates to the technical field of hydrogen purification, and the hydrogen purification equipment comprises an air separation device, a hydrogen production device, a heat exchange part and a filtering part; the air separation device is provided with a refrigerant discharge pipe; the hydrogen production device is provided with a hydrogen discharge pipe; the heat exchange part is provided with a refrigerant inlet end, a hydrogen inlet end and a hydrogen outlet end, the refrigerant discharge pipe is communicated with the refrigerant inlet end, the hydrogen discharge pipe is communicated with the hydrogen inlet end, and a refrigerant discharged by the refrigerant discharge pipe and hydrogen discharged by the hydrogen discharge pipe can be subjected to heat exchange; the filter is provided with an inlet end and an outlet end which are mutually communicated; the inlet end is communicated with the hydrogen outlet end; according to the technical scheme, the utilization rate of hydrogen is increased.

The invention relates to the technical field of industrial process on-line monitoring, in particular to a multi-parameter on-line collaborative monitoring method in ammonia water production, which comprises the following steps: preprocessing a signal; obtaining an equivalent conductivity value after temperature compensation and a corrected pH value after comprehensive compensation; according to the equivalent conductivity value and the corrected pH value, carrying out parallel calculation to obtain a first concentration presumption value and a second concentration presumption value; comparing the deviation with a preset rationality threshold value to check the consistency of the monitoring system; carrying out weighted fusion on the two values by utilizing the dynamic weight, and outputting a final fusion concentration value; under the abnormal working condition, a potential fault source is identified, and a reliable standby data source is adaptively selected to output a temporary concentration value. By means of temperature compensation, concentration presumption, data fusion and fault-tolerant processing, the system can accurately monitor the concentration of ammonia water in real time and automatically conduct self-correction under the abnormal condition, and high-precision and high-reliability monitoring of the production process is guaranteed.

The invention discloses a cobaltosic oxide catalyst doped with lanthanide metal, a preparation method of the cobaltosic oxide catalyst and application of the cobaltosic oxide catalyst to ammonia production through nitrate reduction. The method comprises the following steps: carrying out hydrothermal reaction on cobalt nitrate hexahydrate and a lanthanide metal salt precursor in a mixed system of isopropanol and glycerol, and then carrying out high-temperature calcination to prepare the lanthanide metal-doped cobaltosic oxide catalyst. The preparation method disclosed by the invention is simple to operate and low in cost, the prepared lanthanide metal-doped cobaltosic oxide catalyst shows excellent Faraday efficiency, ammonia yield and cycling stability in an electro-catalysis nitrate reduction reaction, a traditional path of preparing ammonia from nitrate is broken through, and more efficient performance is realized.

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 discloses an ammonium carbamate denitration agent pyrolysis box for preventing crystallization. The ammonium carbamate denitration agent pyrolysis box comprises a box body, a conveying belt, a first heating assembly and a second heating assembly. The ammonium carbamate powder is heated from the upper portion of the ammonium carbamate powder through the first heating assembly, the ammonium carbamate powder is heated from the lower portion of the ammonium carbamate powder through the second heating assembly, it is effectively guaranteed that ammonium carbamate is completely decomposed on the conveying belt, and the defect that a medium can only be heated and decomposed from a single face through traditional heating equipment is overcome. Ammonium carbamate powder is fully pyrolyzed on the conveying belt, so that the problem of pipeline blockage caused by caking of ammonium carbamate in the flue gas denitration process is avoided. The box body can ensure that ammonium carbamate is fully decomposed to generate enough ammonia gas for denitration reaction, so that the denitration efficiency is improved. As the ammonium carbamate is directly decomposed in the box body, the ammonia preparation method does not need to be carried out under a high-temperature condition like the traditional urea ammonia preparation method, the ammonia preparation efficiency is improved by 5.9%-23.5% and averagely improved by 14.70% compared with the urea, and the ammonia preparation energy consumption is reduced by 48.0%-65.0%.

The invention provides a maritime distributed green ammonia production scheduling system and method based on intelligent management, and relates to the technical field of maritime renewable energy utilization, and the system comprises a distributed ammonia production platform which is used for the distributed production of maritime green ammonia. A renewable energy power generation device, water electrolysis hydrogen production equipment, a synthetic ammonia reactor, a green ammonia energy storage device and an ammonia production platform sensor network are configured; the multifunctional ship node is used for production, transportation and consumption of green ammonia and is provided with a green ammonia transportation carrier, an offshore production node expansion unit, a green ammonia fuel consumption terminal and a ship state sensor; the intelligent green ammonia management platform integrates a data transmission module, a multi-target optimization scheduling module, a fault prediction and emergency response module and a supply chain management module, and is used for communicating with an ammonia production platform and ship nodes through the Internet of Things technology, so that intelligent closed-loop management of green ammonia production, transportation and consumption can be realized; the production scheduling efficiency and the energy utilization rate are improved, and the transportation cost is reduced.

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 green electricity ammonia production synthesis tower temperature control system which is arranged in a pipeline between a synthesis tower and a fused salt heating unit, a temperature acquisition end of a TC1 controller is arranged in a pipeline between fused salt electric heaters, and a signal output end of the TC1 controller is in communication connection with a lava electric heater; the temperature acquisition end of the TC2 controller is arranged in the f1 hot gas output pipeline between the fused salt heater and the synthesis tower, and the signal output end of the TC2 controller is in communication connection with the fused salt pump; a temperature acquisition end of the TC controller is arranged at an inlet of a 1 # catalytic bed of the synthetic tower; and a signal output end of the TC controller is in communication connection with an adjusting valve f0 on a process cold air pipeline of the synthetic tower and an adjusting valve f1 on a cold air pipeline of the molten salt heater. Through automatic control of the TC1TC2TC system, adverse effects caused by fluctuation of green electricity such as wind, light and the like can be completely met, and it is guaranteed that the inlet temperature of the 1 # catalytic bed of the synthesis tower is in a reasonable index.

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.

The invention belongs to the technical field of catalysts, and discloses a catalyst for preparing ammonia through urea hydrolysis and a preparation method thereof.The preparation method comprises the following steps that 1, after a carrier is calcined, the carrier is added into a mixed solution of a silane coupling agent and absolute ethyl alcohol to be subjected to ultrasonic treatment, the carrier is taken out and dried, and a modified carrier is obtained; (2) immersing the modified carrier into a transition metal salt solution for multiple times, after each time of immersion, firstly carrying out ultrasonic treatment, then taking out, drying and calcining, and repeating for multiple times to obtain a transition metal oxide-loaded modified carrier; and (3) adding a rare earth metal salt solution or an alkali metal salt solution into the modified carrier loaded with the transition metal oxide by several times, carrying out ultrasonic treatment and then stirring treatment after each time of addition, standing, taking out, drying and calcining after all the addition is finished, thereby obtaining the catalyst for preparing ammonia through urea hydrolysis. According to the invention, the catalytic activity, thermal stability, anti-clogging performance and anti-poisoning capability of the catalyst in the process of preparing ammonia by hydrolyzing urea are obviously improved.

According to the carbon cycle ammonia production system and method based on chemical-looping water splitting, in the carbon cycle ammonia production system based on chemical-looping water splitting, a chemical-looping carbon cycle nitrogen-hydrogen cogeneration module combines a fuel reactor and a high-temperature solid carbon dioxide electrolytic cell in a chemical-looping process, and hydrogen-nitrogen cogeneration with zero carbon emission is achieved. According to the Harbin process ammonia preparation module, multi-stage compression and intermediate cooling are carried out on raw material gas, the system energy consumption is reduced, and moisture used for a steam reactor is preheated. Then, a multi-stage reactor is adopted in the ammonia production process, heat recovery and raw material recovery are implemented, and a chemical chain product is efficiently converted into ammonia gas. The concentrating solar thermoelectric steam co-production module adopts molten salt as a working medium and is combined with a reheat return Rankine cycle containing a heat regenerator to meet the heat and electricity requirements of the system. The system utilizes a chemical-looping water splitting technology to prepare high-purity ammonia gas under a zero-carbon condition, and has the advantages of high efficiency, low emission, high resource utilization and the like.

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 discloses preparation of an Ag-modified Ni2P composite material and application of the Ag-modified Ni2P composite material to ammonia production through electro-catalysis of nitrate reduction, and belongs to the technical field of ammonia production through electro-catalysis of nitrate reduction. The preparation method of the Ag modified Ni2P composite material comprises the following steps: mixing a silver source, a nickel source, urea and ammonium fluoride, and reacting to obtain an Ag-Ni (OH) x precursor; and mixing the Ag-Ni (OH) x precursor with a phosphorus source, and carrying out phosphating treatment to obtain the Ag modified Ni2P composite material. According to the invention, Ni2P is used as a main catalytic substrate, and abundant Ni active sites are provided and are responsible for activating N-O bonds and carrying out multi-step electron transfer; ag is a doping element, so that the electron utilization rate of the catalyst can be increased, the electron structure of a Ni site can be optimized, and intermediate adsorption can be improved; and the two components cooperate to jointly promote efficient nitrate electro-catalysis ammonia preparation reaction, and convenience is provided for starting the whole reduction reaction chain, so that the yield of the target product NH4 < + > is improved.

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 present disclosure relates to a kind of renewable energy electrolytic water hydrogen synthesis ammonia system synergic control method and device, the method includes: according to the predicted power generation of target renewable energy electrolytic water hydrogen synthesis ammonia system corresponding, determine its corresponding full-day multi-period simulated hydrogen production power, and full-day multi-period simulated ammonia production power;Real-time monitoring is carried out to target renewable energy electrolytic water hydrogen synthesis ammonia system, determines its corresponding real-time power generation and real-time hydrogen inventory;According to real-time power generation, real-time correction adjustment is carried out to full-day multi-period simulated hydrogen production power, determines full-day multi-period real-time hydrogen production power;According to real-time hydrogen inventory, real-time correction adjustment is carried out to full-day multi-period simulated ammonia production power, determines full-day multi-period real-time ammonia production power.The embodiment of the present disclosure can realize the multi-time scale synergic control optimization of renewable energy electrolytic water hydrogen synthesis ammonia system, reduce the abandonment rate of renewable energy, improve energy utilization and system benefit and stability.

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 invention relates to the field of ammonia production through urea hydrolysis of an SCR flue gas denitration reducing agent, in particular to an ammonia supply pipeline system suitable for ammonia production through urea hydrolysis. The ammonia supply system is composed of a urea hydrolysis reactor, a pressure regulating valve, a product gas collecting pipe, a Venturi jet device, an SCR denitration device, a stop valve, a throttling valve, a temperature measuring point, a first pressure measuring point, a second pressure measuring point, a steam heat tracing device and an ammonia supply circulating pipeline. According to the invention, a large-section flowing dead zone is prevented from being formed in the ammonia supply pipeline of the product gas, the problems of recondensation and crystallization of the product gas caused by the flowing dead zone are avoided, the system is reliable and safe, reliable pressure gradient setting is provided for circular flowing of the ammonia supply pipeline, and the product gas effectively and reliably flows in the ammonia supply circulating pipeline.