300,000 tons of chemical synthetic ammonia process model production instructions: specification: 4000*2000*1600mm
The three-dimensional miniature 300,000-ton-a-year ammonia plant three-dimensional model not only simulates the real ammonia plant in size, but also achieves a high degree of reproduction in details. This set of ammonia demonstration sand table model is designed and produced according to the teaching needs, and the important equipment, pipelines and workshops in the ammonia factory are carefully reproduced, making people feel as if they are in a real ammonia manufacturing plant.
The application of modern petrochemical sand table model 3D printing manufacturing technology makes this set of synthetic ammonia model devices very high. Dynamic, lighting, three-dimensional, perspective, logo, color and other elements are intertwined, providing excellent visual effects and structural display for teaching and training. Through this coal chemical sand table model, the trainees can gain an in-depth understanding of the process flow and the internal structure of typical equipment in the ammonia plant. This not only saves time in the factory, but also improves the efficiency of the internship, allowing you to focus more on practical operations and control during the valuable internship.
The chemical model is like a bridge between the school and the factory, allowing the perfect combination of theory and practice. Through it, participants can gain a better understanding of the actual operation of an ammonia plant and lay a solid foundation for their future careers. At the same time, this set of petrochemical sand table model also saves the internship time and improves the internship efficiency for the trainees, so that the trainees can better master the knowledge and skills required for the internship.
Teaching sand table model of ammonia synthesis plant.
In this model of ammonia synthesis plant, we carefully arranged six process sections, including gas production section, desulfurization section, compression shift section, copper elution and carburburization section, and ammonia synthesis and refrigeration section. Large-scale machines in these process sections, such as raw material conveyors, gas cabinets, nitrogen and hydrogen compressors, and transparent circulators, are powered by electric simulation technology. In addition, the main production process vividly shows the dynamics of the working fluid in the pipeline through the flow of light.
Gas, steam and solution pipelines and machines for different purposes have been color-separated, making the entire chemical plant more structured. At the same time, the main pipeline is also equipped with a safety valve with a reduced simulation according to the actual product, which makes the complex ammonia production process more intuitive.
This petrochemical plant model is exquisitely crafted, well-equipped, with clear designation, accurate principles, and bright colors for the pipelines. In addition, LED lights are installed in the pipeline to demonstrate the process of ammonia synthesis. The sand table model is also specially equipped with green belts and factory buildings, which are beautiful and practical as a whole.
The base bracket is mainly made of wooden materials, and the exterior is decorated with silver aluminum-plastic panels. The periphery of the countertop is made of aluminum-plastic panels of the same color as the outer frame, the base is in the overall tone of "diamond silver", and the three-dimensional vertical bar shape with a wide supporting color in the middle makes the whole look atmospheric and stable. At the same time, it is made into a number of combination forms according to specific needs, which is convenient for disassembly, assembly and handling.
Sand table model of a chemical plant.
The sand table model of the ammonia production process is carefully designed, which perfectly reproduces the actual factory section process of the coal-to-ammonia production unit. This model is like a miniature factory, in which the equipment and pipelines are presented one by one, which makes it clear at a glance. The main equipment structure is clearly visible, and the electric rotation and LED light simulation demonstration make the entire chemical process more vivid.
The pipelines of water, steam, liquid and other materials are displayed with preset LED lights, just like the working fluid in the busy running pipeline of the real production process. The synthetic ammonia production process model is meticulous, covering multiple sections such as gas production, desulfurization, transformation, decarburization, refining, and synthesis, each of which has been carefully designed, and all kinds of pumps, valves, and pipe gallery systems have been restored one by one.
1. Process flow of gas making section:
In the gas-making section, it starts from the steam sent from the boiler and enters the buffer tank after depressurization. Here, it is mixed with the steam generated by the waste heat ** of the section. This mixed steam then enters the gas generator, where it generates waste heat and softens the water to produce steam. After passing through the combined heat exchanger, this steam enters the buffer tank again, creating a perfect circulation.
In a gas furnace, air and steam are gasified with the burning carbon. During the blowing phase, the generated air gas is dedusted and fed into the blowing system. The water gas generated in the upper and lower blowing stage goes through a series of operations such as dust removal, waste heat **, cooling and dust removal of the gas washing tower, and finally enters the gas cabinet through the water seal of the gas inlet of the gas cabinet, and is ready to enter the next section - the desulfurization section.
The whole ammonia production process is accurate and clear, and the original complex process becomes easy to understand through vivid voice explanation and electric rotation and light demonstration methods. At the same time, the accurate perspective of the equipment structure and the professional voice explanation words make the introduction of this chemical process plant model more convincing. The whole explanation process is logical, follows the actual process of ammonia production, and shows the charm of its unique modern industrial plant.
Chemical sand table model.
2. Process flow of desulfurization section:
After the gas is processed in the gas production section, the dust is first removed through the coke filter. It then enters the dry electrostatic decoking tower and is fed to the cleaning tower by a roots blower. In the cleaning tower, the gas is in full contact with the ammonia to complete the deamination process. The gas then enters the scrubbering tower for desulfurization. After the cooling tower is cooled, the wet electrostatic decoking tower is decoking again. The gas then enters the compressor for compression and is then transported to the conversion section.
At the same time, the lye in the solution tank is processed in two parts. A portion is pumped to the scrubber, where the sulphur dioxide gas is absorbed and then returned to the recirculating tank. It is pumped to the ejector by regeneration and injected to the regenerator. The other part goes directly to the regenerator and the sulphur kettle. Inside the regenerator, the sulphur foam floats and overflows into the foam tank, where it eventually enters the sulphur kettle for sulphur extraction.
Petrochemical equipment model.
3. Transform the process flow of the section
The desulphurized semi-aqueous gas is compressed and enters the gas cooler. Here, the gas is rapidly cooled, removing most of the water vapor from it. The gas then enters the degreaser to remove impurities such as oil to ensure the purity of the gas. The gas then passes through a coke filter, which further filters out the tiny particles and impurities.
After these steps are completed, the gas enters from the bottom of the saturation tower. In the tower, the gas is in contact with the hot water against the current, absorbing the heat of the hot water and increasing humidity and heating. Through the outlet at the top of the tower, the gas enters the separator with the right amount of steam. Here, the water droplets in the gas are separated and the gas is purer.
The gas then enters the No. 1 heat exchanger pipe. In the tubing of the No. 1 heat exchanger, the gas is heated to the temperature required for the reaction. Then, the gas enters the No. 2 heat exchanger pipe, and after further heating, the gas is heated by the medium substation heater. At this time, the gas temperature has reached the reaction conditions required for the medium temperature shift furnace.
After heating, the gas smoothly enters the upper section of the medium-temperature shift furnace for transformation reaction. In order to better adjust the temperature of the bed, the gas after the transformation reaction in the upper section of the medium-temperature shift furnace enters the lower section of the medium-temperature shift furnace to ensure the smooth progress of the transformation reaction. This series of treatment processes not only ensures the purity of the gas, but also lays a solid foundation for its subsequent chemical reactions.
Demonstration model of chemical process process.
4. Process flow of decarburization section:
The shift gas generated by the compressor is introduced to the bottom of the carbonization tower, where it meets the packed section of the column where the carbon propylene liquid sprayed from the top meets it. This process is the process of mass transfer and absorption, with the aim of removing carbon dioxide from the shift gas. The purified gas is mixed with steam at the top outlet of the tower and subsequently enters the complex. In the integrated column, the entrained dilute liquid is separated and the purified gas enters the fine desulfurization tank. In this tank, the hydrogen sulfide is further removed, allowing the purified gas to reach a higher purity. After the desulfurization, the purified gas is fed into the compressor, where it is compressed and then re-enters the refining section.
After absorbing carbon dioxide, the carbon propylene rich liquid flows out of the carbonization tower, and most of it enters the carbonization tower together with the concentrated ammonia water from the concentrated ammonia tank through the mother liquor pump. The thicker part enters the thickener for solid-liquid separation. The separated carbon propylene liquid enters the circulation tank and is pumped into the high-level ammonia suction device together with the carbon propylene liquid from the integrated column. Here, the carbon propylene liquid absorbs ammonia, passes through the ammonia absorption cold drain, enters the concentrated ammonia tank, and finally is pumped into the carbonization tower again to start a new cycle.
Decarbonization process flow model.
5. Process flow of refining section:
The decarburized gas produced by the compressor first enters the oil separator, where it undergoes a delicate oil-gas separation. The pure gas then enters the bottom of the copper washer. The copper liquid sprayed down from the top of the tower is in contact with the gas countercurrent, like a magical absorber, absorbing carbon monoxide, carbon dioxide, oxygen, hydrogen sulfide and other impurities in the gas one by one. After the refining of the copper washing tower, the gas becomes purer and is exported from the top of the tower.
These refining gases enter the liquid copper separator, which separates the small amount of liquid copper that adheres to the gas. They then enter the compressor flawlessly, receiving compression again. The compressed gas is sent to the synthesis section for the next round of processing.
The copper liquid flows out from the bottom of the copper scrubber after absorbing the harmful substances in the gas. The molten copper is sent to the top of the reflux tower and sprays down like a waterfall. Here, they meet the regenerated gas desorbed by the regenerator for another counter-current absorption. The copper liquid successfully absorbs about 80% of the ammonia in the regenerated gas and removes most of the heat. After this process, the temperature of the molten copper is preheated to about 60.
Subsequently, the molten copper comes out of the reflux tower and into the tubing of the lower heater. Here, the molten copper is indirectly heated by the hot molten copper in the shell. Through the riser tube, the molten copper flows upwards into the intermediate reducer and then into the upper heater. Outside the tube, the vapor continues to heat the molten copper. After this series of treatments, the molten copper enters the regenerator, where it becomes even purer.
The regenerated molten copper comes out from the lower side of the regenerator and enters the shell of the lower heater, where it is counter-current with the molten copper in the pipe. After this process, the copper slag is separated and fed into the copper barrel. The pure molten copper goes into the underground tank and is filtered together with the molten copper from the copper scrubber and the molten copper separator. In this process, the oil and sediment in the copper melt are filtered out.
Finally, through the pressurization of the copper pump, this pure copper liquid enters the copper storage tank or return tower to start a new round of recycling. In the reflux tower, about 60% of carbon monoxide and carbon dioxide are analyzed. These gases, together with the regenerated gas, are carried out from the upper part of the return tower**. After that, the regenerated gas is mixed with dilute ammonia water and sent to the gas-liquid separator. The separated gas phase then enters from the bottom of the ammonia net tower and is in countercurrent contact with the desalinated water or dilute ammonia water at the top of the tower in the packing layer. After this process, the ammonia in the gas is absorbed. The gas coming out of the top of the ammonia purification tower is then sent to the roots blower inlet in the desulphurization section. The dilute ammonia water is sent to the ammonia location for other process treatment.
Demonstration model of petrochemical process.
6. Process flow of synthesis section:
Powered by a high-power compressor, the copper wash refining gas is sucked into the ammonia cooler outlet pipe. Here, it is mixed with circulating gases, which come from the cooling process of the ammonia cooler. The mixed gas enters the bottom of the cold exchanger, where it undergoes a series of separation processes to separate the liquid ammonia from the oil moisture. The gas then enters the upper heat exchanger tubes and is heat exchanged with the hot gas from the water cooler.
After the heat exchange, the gas pressure is increased and fed into the turbine. The turbine is an important piece of equipment that stabilizes the gas and improves its energy efficiency by pressurization. The gas coming out of the turbine enters the oil separator, where it goes through a fine separation process to completely remove the oil and water from the gas.
The separated gas is divided into four channels and enters the synthesis tower together. The main line gas first enters the annular gap of the synthesis tower, and after heat exchange, it exits the tower from the primary outlet. It then enters the gas-gas heat exchanger between the tubes and exchanges heat with the gas inside. The gas then enters the lower heat exchanger from the secondary inlet of the synthesis tower and exchanges heat with the reaction gas from the catalyst layer to further increase the temperature. After the reaction of the catalyst layer, the gas enters the waste heat boiler tube from the secondary outlet of the tower.
In a waste heat boiler, the gas is heat exchanged with the soft water, which vaporizes the soft water and produces saturated steam. The steam is sent to the conversion section to provide the required heat and power. The mixed gas coming out of the waste pot enters the soft water heater, and the hot soft water is heated for copper washing and regeneration. Then, the gas enters the gas-gas heat exchanger tube and undergoes the final heat exchange with the gas from the primary outlet of the synthesis tower.
After a series of heat exchange and cooling processes, the gas proceeds in two ways. One way is mixed through the turbine outlet pipe and then enters the oil-gas separator, and the separated gas is returned to the synthesis tower. The other way enters the water cooler for cooling and then into the heat exchanger tube in the upper part of the cold exchanger for further cooling. After this, the gas enters the ammonia and separates off part of the liquid ammonia. The remaining gas then enters the ammonia cooler for further cooling. The circulating gas after the ammonia cooler is mixed with fresh gas and then enters the cold exchanger again to separate the liquid ammonia.
This process is constantly circulating, and liquid ammonia is produced continuously. The liquid ammonia separated from the ammonia and cold exchanger is collected into the liquid ammonia storage tank for further treatment and utilization.
Petrochemical sand table model.