【Major Equipment in the Chemical Equipment Industry】3.25–1 million tons/year coal tar hydrogenation unit VGO circulation pump
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Comply with the Work Safety Law! Take on the role of the primary responsible person! ---------------------------------------------- The past decade has been a period of rapid development in China’s chemical industry, marked by the emergence of many new processes, products, and equipment. The development of chemical processing equipment in our country has also been significant, and it has contributed to the rapid progress of the petrochemical industry. Here, we have compiled some of the achievements and breakthroughs made by domestic equipment manufacturers in terms of larger-scale equipment production and localization. We invite everyone to share their insights and discuss these matters together, to cheer for Made in China and to support the advancement of chemical processing equipment! ------------------------------------------------------ Your participation is the greatest support for the forum. Click on the blue link to access it: The 【Haichuan Equipment Guessing Game】 series is being updated continuously in 2022; all forum members are welcome to take part actively! https://bbs.hcbbs.com/thread-2079686-1-1.html Summary post for the 【Major Chemical Equipment】 series. https://bbs.hcbbs.com/thread-3312079-1-1.html -------------------------------------------------- In July 2020, the SDT70-300 type VGO circulation pump, developed independently by Chongpu Company and being the first of its kind in China capable of transporting high-temperature, high-pressure fluids containing solid catalyst particles, was put into use. This pump was successfully commissioned on-site at a coal chemical plant with an annual capacity of 1 million tons for coal tar hydrogenation, and it has since been operating in industrial settings. On-site operation data show that the main performance indicators of this product exceed those of similar international products, breaking the foreign technological monopoly in this field. The SDT70-300 VGO circulation pump is a key equipment in hydrogenation units of the coal chemical industry, petroleum refining industry, and organic chemical industry. By overcoming multiple technical barriers through independent research and development, Heavy Pump Company has created another high-end pump product that fills a gap in the domestic market; this pump is suitable for transporting media that are high-temperature, high-pressure, flammable, explosive, toxic, or contain solid particles. During the development of this pump, new casting technologies were developed. By combining techniques for casting with varying shrinkage rates, high-strength water-soluble casting materials, and casting materials resistant to gas formation and sintering, a new casting process was created that solved the challenges associated with casting large pressure-bearing castings in narrow and complex spaces with interconnecting flow channels.
The VGO circulation pump also incorporates a number of advanced technologies with entirely independent intellectual property rights. This product features a high safety factor; the centrifugal pump with a double-cylinder structure can transport VGO at a maximum temperature of 350°C and a maximum pressure of 28 MPa. It features high efficiency; the specific speed of the VGO circulation pump is less than 40, making it an ultra-low specific speed centrifugal pump suitable for low flow rates and high head pressures ； It has a long service life; the internal surfaces of the pump are treated using special processes to enhance the surface properties of the materials. At 350°C, the surface hardness of components such as impellers and casings reaches over 700 HV, with a hardening layer thickness of 0.6 mm. This prevents wear and erosion caused by catalyst particles with sizes ranging from 10–200 μm and a hardness of 500 HV in the fluid, ensuring that the pump’s operational life in industrial applications exceeds 8000 hours ； It features a high degree of integration, consisting of a VGO circulation pump, a speed increase gearbox, an electric motor, a lubrication system, a flushing system, a cooling system, an electrical system, and an online monitoring and control system for the entire life cycle. The development of this pump originated in 2018. Guided by the \"Several Opinions of the State Council on Accelerating the Revitalization of the Equipment Manufacturing Industry\" and the \"13th Five-Year Plan for Building Chongqing into a Major Modern Manufacturing Hub,\" which emphasize the need for domestic production and industrialization of key equipment for large-scale coal chemical processes, Zhongpo Company carried out research and development on the VGO circulation pump – the pump used in coal tar hydrogenation processes under the most severe operating conditions, handling high temperature, high pressure, and solid catalyst particles – over a period of more than two years, and was successful in its efforts. It has enhanced the level of independent innovation in Chongqing’s equipment manufacturing industry, met the demand for equipment products in the national economy and key construction projects, and contributed to the development of the domestic petrochemical industry.
Cheer for Made in China, give support to chemical processing equipment!
Cheer for Made in China, give support to chemical processing equipment