Jiangsu Haifa Machinery Manufacturing Co., Ltd.

The global single-train 1.8 million tons/year ethylene steam cracker is a large-scale continuous petrochemical unit. A typical process includes feedstock pretreatment, cracking furnaces, quenching, cracked gas compression, caustic washing, cryogenic separation, ethylene/propylene distillation, and product delivery. Public technical data from Linde indicates that after quenching, the cracked enters a multi-stage compression system followed by cryogenic separation; therefore, pump equipment is continuously exposed to high-temperature hydrocarbons, low NPSH conditions, easily vaporized light hydrocarbons, and high-pressure continuous operation. API 610 pump types and typical process sections — OH1, OH2: used for feedstock oil, quench water, process water, and general chemical media; among them, OH2 features centerline mounting, making it more suitable for high-temperature hydrocarbons, quench oil, and hot process liquids. OH3, OH4: vertical in-line pumps with compact layout, suitable for light hydrocarbons, condensate, and auxiliary process transfer in the unit area. OH6: high-speed integrally geared pump, suitable for low-flow, high-head light hydrocarbon or high-pressure injection services. BB1, BB2: suitable large-flow quench water, circulating hydrocarbons, and high-temperature process media; BB features radial split and double-end support, suitable for continuous heavy-duty service. BB3, BB4: multi-stage between-bearings configurations, applicable to higher-head process transfer, condensate, and booster systems. BB5 double-casing multi-stage barrel pump is suitable for high-pressure, low-density hydrocarbons and product boosting. International pump manufacturers have applied API 610 BB5 to high-pressure ethylene services such as Ethylene Shipping. VS1 can be used for large circulating water, cooling water, and underground sump pits; VS4, VS5 are suitable for sewage, condensate, and submerged applications; VS6, VS7 can pumps are suitable for low NPSH, easily vaporized light hydrocarbons, cryogenic liquids, and high-head transfer. The international API 610 product system also applies VS6/VS7 to high-vapor-pressure, low-specific-gravity media such as LPG. Jiangsu Haifa Machinery Manufacturing Co., Ltd. (www.jslgpump.com) provides API 610 chemical process pumps for refining, petrochemical, and coal chemical industries, covering OH, BB, and VS series, and can perform engineering selection based on the Flow, Head, NPSHa, Vapor Pressure, Operating Temperature, API 682 Seal Plan, and material corrosion allowance of the 1.8 million tons/year ethylene cracker. Its public information shows that the company has long OH, BB, and VS series API 610 process pumps. Abstract references: [1] API Std 610, Centrifugal Pumps Petroleum, Petrochemical and Natural Gas Industries. [2] ISO 13709, Cental Pumps for Petroleum, Petrochemical and Natural Gas Industries. [3] Linde Engineering, Steam Cracking Technology. [4] Sulzer, API 610 / ISO 13709 Pump Applications.

https://www.jslgpump.com