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Development status of petrochemical pump

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Development status of petrochemical pump

Release date:2015-06-15 16:16 Source: Views:

Chemical pump chemical process pump is a general term for various pumps in chemical production process.. Chemical process pump variety is very much, according to action principle can be divided into vane pump, such as centrifugal pump, axial flow pump, mixed flow pump, flow pump, vortex pump; positive displacement pump, such as reciprocating pumps (including the pump plunger, piston pumps, diaphragm pumps, etc.); rotary pumps (including the pump, liquid ring pump gear pump, sliding vane pumps, roots pumps, radial piston pump); other types of pumps, such as injection pump, electromagnetic pump, water hammer pumps. According to the production process or product characteristics, can be divided into high-pressure Methylamine Pump, cryogenic pumps, phosphate slurry pump etc..

In chemical or petrochemical production, the pump working in high temperature, low temperature (or ultra low temperature), high pressure, flammable, explosive, toxic and strong corrosion medium, some still in high inlet pressure, high lift, high viscosity, small flow, high cavitation conditions, the performance of the chemical pump put forward quite demanding requirements, especially on corrosion resistance, does not allow leakage (poisonous medium) and wear resistance of high requirements. In order to meet the special requirements of chemical production, chemical pump is specialized in chemical industry, such as plastic pump, glass pump, Tao Cibeng, Shi Mobeng, shield pump, magnetic pump, impurity pump, etc..

Phosphate fertilizer production process requires the transmission medium are mainly phosphate rock slurry, phosphoric acid slurry, a variety of filtrate, concentrated phosphoric acid dilute phosphoric acid, sulfuric acid, dilute sulfuric acid and fluoride acid, etc., pump and are highly susceptible to media corrosion and erosion corrosion or wear. Phosphate slurry pump is a pump all kinds of phosphate fertilizer production process, generally referred to, is a very strong representation of corrosion and abrasion of pump. In the early stages of the development of the phosphate fertilizer industry, the commonly used chemical resistant corrosion pump, some life span of only a week, so experts home and abroad pump in phosphate slurry pump in the structural design, materials testing, sealing and so on were a large number of research and development. In the phosphate slurry pump design, the first to solve the corrosion and erosion corrosion or wear problems. Therefore, the structural design and the matching between the impeller and the impeller should be considered specially.. The metal material used in foreign phosphate slurry pump, is based on a series of different media conditions. Domestic manufacturing facilities and research units were also on a variety of materials for corrosion resistance and wear resistance performance of the research, create their own iron ferrite stainless steel, dual phase steel, austenitic stainless steel material series. Domestic many phosphate slurry pump professional manufacturing factory, and Chinese Academy of Sciences, universities, design institutes, research institutes and to participate in scientific research and development, phosphate slurry pump in the localization problem has been basically solved. Shi Huabeng

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