Chemical raw material production must see! Application of nitrogen making machine

The production of chemical raw materials involves methanol, olefins, aromatics, fine chemical intermediates and other products. The production process is mostly accompanied by high temperature, high pressure, flammable and explosive risks, and most of the raw materials and products are easy to oxidize and sensitive to oxygen moisture. Nitrogen, as an inert gas, is the key medium to ensure production safety, stabilize the process and improve product quality. Nitrogen making machine, as the core equipment of nitrogen production, runs through the whole process of chemical raw material production. Its application scenarios are directly related to production safety and product quality.

Common raw material categories in chemical raw material production

The chemical raw materials mentioned in this paper cover all kinds of core raw materials and intermediates that need to be protected in the production process, mainly including basic chemical raw materials and fine chemical raw materials. Basic chemical raw materials such as methanol, ethylene, propylene, aromatics, etc., are the basic carriers of chemical production; Fine chemical raw materials are mainly all kinds of fine chemical intermediates, which are sensitive to oxygen and water and easy to oxidize and deteriorate. All of them need to use nitrogen and nitrogen making machine to achieve safe production.

The core application logic of nitrogen making machine

In the whole production process of methanol, olefin, aromatics, fine chemical intermediates and other chemical raw materials, nitrogen can effectively realize the anti-oxidation deterioration of raw materials, reactive anaerobic process protection, equipment safety purge and replacement, inert carrier gas transportation of materials and tail gas dilution and inerting. As the core equipment of nitrogen production, nitrogen making machine can stably provide high-purity nitrogen to meet the process requirements of each link. It is the key auxiliary equipment to ensure the production safety of this kind of chemical raw materials, stabilize the process parameters, and improve the purity and yield of raw materials.

Nitrogen prevents oxidation to ensure the stability of raw materials

In the production of chemical raw materials, most of the raw materials, such as methanol, olefin and fine chemical intermediates, have the characteristics of easy oxidation, volatilization, easy coking or deterioration in case of oxygen, and some of the raw materials also have the safety risk of spontaneous combustion in case of oxygen. The high-purity nitrogen gas taken by the nitrogen making mechanism will be filled into the raw material storage tank, silo and other storage containers to form an inert gas phase sealing layer, which will isolate the contact between air and raw material, prevent the oxidation decomposition, color change and failure of raw material from the source, and reduce the hidden danger of explosive mixed gas formed by the mixing of volatile raw material and oxygen, so as to ensure the safety of raw material storage.

No oxygen protection, improve production efficiency and product purity

The synthesis reaction of chemical raw materials is mostly high temperature, high pressure or catalytic reaction, the presence of oxygen will lead to catalyst poisoning, side reactions, product yield decline, and even cause combustion and explosion. Nitrogen making machine continues to fill nitrogen into the reaction kettle, reactor tower and other equipment, which can effectively replace the air and oxygen in the system, create a stable oxygen-free reaction atmosphere, protect the activity of precious metal catalyst, and reduce the formation of by-products. At the same time, nitrogen can also be used as inert carrier gas in some low-pressure synthesis reactions to adjust the pressure of the reaction system, stabilize the process parameters, avoid reaction interruption caused by pressure fluctuations, and further improve the purity and yield of the target chemical raw materials.

Purge and replace to avoid maintenance safety risks

Flammable, explosive, toxic and harmful raw materials or mixtures will remain inside the reaction reactor, pipeline, rectification tower and other equipment of chemical raw material production line during process switch, shutdown for maintenance or pretreatment before feeding, and direct operation is easy to cause explosion and poisoning accidents. As a safe purge and replacement medium, nitrogen provided by nitrogen making machine can completely replace residual materials, oxygen and combustible gas in equipment and pipeline through positive pressure purge and negative pressure extraction, reduce oxygen content below the safety threshold, dilute toxic and harmful gases, and provide a safe working environment for equipment maintenance and process switching. In addition, before the equipment starts, nitrogen can also purge water vapor and impurities in the pipeline to prevent hydrolysis reaction between raw materials and water vapor, which affects product quality.

Dilution inert, improve site safety level

In the production process of chemical raw materials, exhaust gas containing flammable, explosive, toxic and harmful components will be produced. Such exhaust gas needs to be diluted before direct discharge to avoid safety accidents. The nitrogen provided by the nitrogen making machine can dilute the high concentration of flammable and explosive exhaust gas, and then send the exhaust gas concentration below the explosion limit into the exhaust gas treatment system to ensure the safety of the exhaust gas treatment process. At the same time, in the dangerous areas such as raw material unloading area and reaction kettle area of the production workshop, a small amount of nitrogen can be continuously introduced to form an inert protective atmosphere. Once material leakage occurs, nitrogen can quickly dilute the leakage to prevent it from mixing with air to form explosive mixed gas, and further improve the safety protection level of the production site.

Nitrogen making machine is the "safety guarantor" of chemical raw material production

From raw material storage, reaction production, equipment operation and maintenance, material transportation, finished product packaging and tail gas treatment, nitrogen making machine stably produces high-purity nitrogen, providing inert protection, safe purging, carrier gas transportation and other core support for the whole process of chemical raw material production such as methanol, olefines, aromatics and fine chemical intermediates. Its application not only effectively avoids the safety risk in the production process, but also stabilizes the production process, improves the purity and yield of products, and becomes an indispensable core auxiliary equipment in the chemical raw material production industry, helping the chemical raw material production to achieve safe, efficient and stable operation.