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General pressure conversion absorption nitrogen production equipment
Nitrogen is the main component of air. It is colorless, odorless, non-toxic and non-combustible gas under room temperature and atmospheric pressure. Its boiling point is-195.8 ℃, and its chemical property is inactive. In addition to synthetic ammonia, nitrogen is usually used as protective gas in industries such as metallurgy, chemical industry, coal, food, medicine, electron, magnetic material, transportation, heat treatment, tire, thermoelectricity, aviation, etc.
Special pressure conversion nitrogen absorption equipment for petroleum and petrochemical industry
Chemical industry is the industry with the largest application of nitrogen equipment. Currently, the most widely used one is: PVC, with a purity of 99.5% and a relatively large flow rate. Polypropylene (PE) has a purity of 99.9% and a large flow rate. The application of nitrogen in this product is divided into two parts. One is that 99.9% nitrogen (small amount) is needed when filling and emptying the activator and catalyst ), the amount of nitrogen used in the reactor is 99.5%, and the purity is 99.9% habitually.
The purity of polyethylene and glycerol is 99.95%. The nitrogen used in the Catalyst regeneration of petrochemical products is about 4 times as usual, but the service life is short.
The purity of dexide and ethanol is 99.9% in general, and the purity of petrochemical products is 99.9% (there are not many domestic manufacturers at present, and the demand is strong.
Petroleum: it can be applied to the nitrogen purging of pipelines and containers in the system, the nitrogen filling, replacement and leak detection of storage tanks, and the protection of combustible gases. It can also be applied to diesel hydrofining and catalytic reforming, and the purity is generally 99.9%.
Oleanic acid: the purity is 99%.
Polyester: the upstream raw material PTA (refined paraben dimethanol), the actual use purity is 95%, generally 99%.
In the PTA production process, high-purity nitrogen is used to blow bubbles to measure the liquid level of ethylene glycol raw materials in high-temperature and low-temperature reactors, measure the pressure difference between high-pressure end and low-pressure end, and then deliver 4 ~ 20mA standard signal, and then convert to liquid level height. And use high-purity nitrogen to measure the pressure of vacuum system, and use high-purity nitrogen to backblow and wash the filter in PTA production process. Polyester Chips are generally 99% according to the actual process ~ 99.999%, sliced downstream products filament, short filament, 99.9 ~ 99.999%.
Float Glass: the purity is 99.9995%, no hydrogen.
Heat treatment: galvanized sheet can be divided into annealing process and galvanized process, and the purity of nitrogen is required to be 99.9995%, and H25 ~ 20%, the equipment composition is quite complicated.
Aluminum: generally 99.9995%, no hydrogen is required, otherwise there will be "hydrogen cell" phenomenon.
Automobile air conditioning: Liquid nitrogen is basically adopted, according to the actual situation, 99.999% is adopted, and combined with carbon combustion method, it can completely meet the requirements.
Tire nitrogen filling and pressure changing nitrogen adsorption equipment
The key to tire competition in the 21st century lies in technology and price, and the price of tire is closely related to manufacturing process and technology. Swiss gas PSA nitrogen production equipment can help you win the first chance in the competition, and has achieved effective value promotion in Shanghai Shuangqian load tire company.
According to the domestic traditional craft, the steel radial tire is shaped and vulcanized by using hot water. The so-called superhot water Vulcanization refers to the shaping of tires using low pressure steam, during the process of positive vulcanization of tires, the filling medium of capsule (similar to the effect of mould) is high pressure hot water above 170℃, the external temperature adopts low-pressure steam for vulcanization; and nitrogen-filled Vulcanization refers to the shaping of tires using low-pressure nitrogen (0.4 ~ 0.5 MPa), in the process of positive vulcanization of tires, the filling medium in the capsule is the mixed gas of high pressure steam and high pressure nitrogen (2.5MPa), and the external temperature adopts low pressure steam for vulcanization, both of the two methods use high temperature to change the molecular structure of the natural rubber chain into a network structure, and at the same time, combine the layers of bunching layer tightly, and form a pattern on the tire. Nitrogen vulcanization and the performance indicators of tires, such as mileage, durability, uniformity and pressing capacity, are all higher than the performance indicators of traditional superhot water vulcanization. The purchase cost of nitrogen production equipment can recover all the investment in almost over one year.
At present, some radial tires used in domestic cars have widely used nitrogen vulcanization like foreign ones, such as Jiatong tire, Linglong tire and so on. Shanghai Shuangqian tire company is the first one to use the radial tire, the above manufacturers all use the nitrogen equipment produced by Ruiqi company.
The nitrogen consumption of each car tyre is about: 1.25 m3
Nitrogen consumption of each load tyre is about: 12 m3
Generally, the factory uses nitrogen recovery to save the cost of using nitrogen, generally considering 40% ~ 50% nitrogen recovery.
Special fire prevention and extinguishing nitrogen equipment for coal mine
The essence of nitrogen injection fire prevention is to inject a certain flow of nitrogen into the oxidation zone of goaf or in the fire zone to reduce its oxygen content to 7% or 3%, so as to achieve the purpose of fire prevention, its function is to eliminate the danger of gas explosion; prevent the natural heating and spontaneous combustion of coal; reduce the burning intensity and prevent airtight air leakage.
According to the differences of mine conditions, coal production, ventilation, transportation distance, gas content and spontaneous combustion period, Ruifeng provides customers with two kinds of nitrogen equipments: KGZD series Ground fixed equipment and JXZD series underground mobile equipment.
This series of equipment is jointly manufactured by Wenzhou Ruifeng sub-Equipment Co., Ltd. and Chongqing branch of Coal Science Research Institute, and has obtained the National Coal Mine product safety mark permit.
Medical pressure swing adsorption nitrogen generation machine
Usually, water needles (penicillin, etc.) and large infusion (such as amino acids, etc.) which are easy to be oxidated need nitrogen protection, otherwise the liquid medicine is easy to be oxidated during the storage period, that is to say, it will deteriorate. Generally, before packaging, the method of front nitrogen washing and then nitrogen washing (or single nitrogen washing) is adopted to make the oxygen concentration in ambush bottle or infusion bottle lower than 0.5%, and the liquid medicine can keep quality for a long time. For now, the equipment bought by General manufacturers is about 5 ~ 20 m3/H, the purity is 99.99%. The difference between medical nitrogen generator and other nitrogen equipment is that the parts contacting with medicine or liquid medicine are made of stainless steel and the requirements of sterilization because of the international standard GMP standard of medicine industry, the equipment should be made of stainless steel, and the nitrogen outlet of the equipment should be equipped with sterilization filter device. It is also because the pharmaceutical factory has high overall requirements for equipment, and usually has high-end configuration.
In addition, crude drug manufacturers also need nitrogen protection, and their nitrogen technology is more like the way of using nitrogen in fine-grained factories. Generally, the purity is 99 ~ 99.9%, but the amount varies according to the size of the factory, but the amount is much larger than that of the medicinal nitrogen generator. For example, the dosage of Zhejiang Pharmaceutical Co., Ltd. and Yongning pharmaceutical factory is 300 cubic meters/hour.
Nitrogen production equipment in food industry
It is mainly applied to food preservation, cold storage and other aspects. The Post-purification system designed by Ruiqi air separation plant Co., Ltd. is a patent to ensure that the product is sterile, dustless and odorless, it is better to reduce the aftertaste of nitrogen used by food manufacturers.
Nitrogen generator of electronic magnetic material industry
It includes many branch categories, mainly including piezoelectric crystal, semiconductor and lead-free welding, etc.
