【Ten Years of Rapid Development in Chemical Processing Equipment】1028-2022 Dual-cylinder, double-acting hydraulic diaphragm pump for gasification pulp production systems
Thread Content
In April 2022, the two-cylinder double-acting hydraulic diaphragm pump developed and produced by **Pump Company for slurry transportation passed a 24-hour continuous water-testing trial, with all performance indicators meeting or exceeding the design requirements, resulting in a successful test run on the first attempt. Current tasks include painting and sealing the boxes to complete the work. This device is a low-pressure coal slurry pump for optimizing the slurry preparation system in the gasification workshop of a company in Shandong, used for transporting coal slurry. The successful development of the double-cylinder, double-acting hydraulic diaphragm pump has laid a solid foundation for the company’s diaphragm pumps to enter the coal slurry market and for the diversification of its diaphragm pump products.
【Ten Years of Rapid Development in Chemical Equipment】Acrylonitrile Reactors for 260,000 tons/year Acrylonitrile Production Projects from 2019 to 2023 https://bbs.hcbbs.com/thread-4304716-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Since the 1990s, the successful operation of China’s Wengfu phosphate mine and Jianshan iron ore slurry pipeline projects has spurred the development of the industry related to slurry pipeline transportation technologies and equipment. Core power equipment for slurry pipelines, such as diaphragm pumps, piston pumps, slurry pumps, and screw pumps, have evolved from non-existent to high-performance models. Domestic pump manufacturing companies have filled numerous technical gaps through independent research and development as well as the adoption of advanced foreign technologies. In particular, the technical level and production capacity of diaphragm pumps have reached international advanced standards after nearly a decade of development. The pump is the heart of the slurry pipeline; whether its selection is appropriate not only directly affects the capital investment required for pipeline construction, but more importantly, it impacts the safety and reliability of the pipeline system’s operation as well as its operational costs after it goes into use. Currently, the power pumps suitable for slurry transportation mainly include several categories such as centrifugal slurry pumps, piston diaphragm pumps, water diaphragm pumps, plunger pumps, and screw pumps
The piston diaphragm pump is an improved version of the traditional oil-sealed pump; it was developed as a new type of power pump designed to meet the requirements of high-temperature, high-pressure, and highly abrasive corrosive environments found in coal chemical industries, alumina production, as well as various long-distance slurry transportation projects. Diaphragm pumps come in three structural configurations: single-cylinder, double-cylinder, and triple-cylinder. A complete set of such pumps consists of components such as the power unit, hydraulic unit, hydraulic control system, motor reduction system, and electrical control system. The research, development, and manufacturing of diaphragm pumps in our country started relatively late. Due to the complex structure of these pumps and their limited range of applications, there are currently less than 5 machinery manufacturing companies in the country that possess the capability to produce them.
China Nonferrous Shenyang Pump Industry and Chongqing Water Pump Factory are the industry leaders in diaphragm pump manufacturing in China. Chongqing Water Pump Factory successfully developed China’s first three-cylinder high-pressure reciprocating pump in 1955; in the late 1980s, it began to develop, produce large-scale hydraulic diaphragm pumps based on reciprocating piston pumps and diaphragm metering pumps. In 1989, it produced China’s first piston diaphragm pump. Sinoma Shenyang Pump Co., Ltd. began research and development work on diaphragm pumps in 1991; the first double-cylinder double-acting diaphragm pump was manufactured in 1994. In 2007, advanced third-generation double-cylinder double-acting and three-cylinder single-acting diaphragm pump series were developed. The company is now capable of producing over 100 large-scale diaphragm pumps per year. Based on independent research and development as well as the adoption of advanced foreign technologies, these two companies have helped to raise China’s manufacturing capabilities in diaphragm pumps to world-class levels within just twenty years. At present, China’s diaphragm pump manufacturers are growing rapidly and becoming more competitive; the performance of domestically produced pumps is improving steadily. Some of their test parameters are now on par with those of internationally renowned diaphragm pump brands such as GEHO from the Netherlands, WIRTH and FELUWA from Germany. In particular, the 34 main diaphragm pumps used in the stage 6 pumping stations of the Shenwei coal transport pipeline project are all of domestic manufacture, which will help propel China’s diaphragm pump industry onto the international stage. The advent of diaphragm pumps has created favorable conditions for the construction of slurry pipeline projects over long distances and under harsh operating conditions in our country.