【Ten Years of Rapid Development in Chemical Equipment】1685–2011: The First Domestic Multi-stage Hydraulic Turbine Put into Use at Jinling Petrochemical
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Happy May Day 2024! Safety first. Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment. **********************【Ten Years of Great Development in Chemical Engineering Equipment】Regular updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** On June 14, 2011, the first domestically produced multi-stage hydraulic turbine developed jointly by Jinling Petrochemical and Shenyang Greide Pump Industry was successfully put into use in Jinling Petrochemical’s 1.3 million tons per year alkybenzene hydrogenation unit. Monitoring data show that all its design parameters meet the standards of similar foreign products, and it offers significant energy-saving benefits, contributing to the localization and widespread use of hydraulic turbines in China. A hydraulic turbine is a machine that converts the energy contained in liquid fluid media into mechanical work; it is also known as a turbine or turbomachine. Its basic working principle is that the energy possessed by the liquid fluid in the fluid is converted into kinetic energy as it passes through the turbine nozzle, thereby driving the turbine shaft to rotate and achieving the goal of reducing power consumption. This technology offers significant benefits in terms of energy savings and reduced consumption. In the energy-saving and emission-reduction renovation of the 1.3 million tons per year hydrorefining–molecular sieve dewaxing unit carried out last year at Jinling Petrochemical’s alkylbenzene plant, the addition of hydraulic turbines was one of the energy-saving measures. Since there were no domestic hydraulic turbines available at that time, imported hydraulic turbines had to be purchased. However, imported hydraulic turbines have long delivery times and high prices; as a result, Jinling Petrochemical developed the idea of researching and producing domestic hydraulic turbines. They negotiated with several domestic manufacturers of chemical process pumps and ultimately decided to cooperate with Shenyang Grid Pump Industry. Based on the research and theoretical analysis, the developers selected the optimal technical approach and carried out tasks such as model design, model selection, and performance testing for the hydraulic turbine. During the manufacturing process, the two parties worked together to overcome various technical challenges related to the hydraulic turbine pump’s ability to withstand high temperatures and pressures, as well as resistance to erosion, cavitation, gas-liquid mixing, and axial balancing forces. After 5 months of intense collaboration, China’s first multi-stage hydraulic turbine was developed; its cost is only 1/5 that of similar imported equipment, and various design parameters such as vibration levels, noise levels, temperature, and pressure all meet the standards of foreign counterparts. Shortly two months after the successful deployment of the domestically produced hydraulic turbines at Jinling Petrochemical, Shenyang Greide Pump Industry received orders or letters of intent from various companies including Sinopec and CNPC, demonstrating the good prospects for the use of these domestically produced hydraulic turbines.
The factory, in collaboration with Tsinghua University, developed a temperature-raising absorption-type lithium bromide heat pump that uses low-temperature waste heat as a heat source to generate high-temperature heat. It was put into operation in January 2012, generating steam for the plant’s sulfur unit to replace steam purchased at 1.0 MPa. The heat pump produces 55,600 tons of steam per year, reducing the factory’s reliance on purchased steam and saving production costs by 11.07 million yuan; it also saves 4,200 tons of standard oil equivalent in energy usage each year. Since 2010, the factory has used the waste heat from one lift column in the alkylation unit to heat the heat transfer water, which is then utilized for insulating the material pipelines and instruments within the production facilities, as well as for insulating oil transport pipelines, maintaining the temperature of storage tanks, and providing heating for offices in the production area. This approach has resulted in a savings of 20,000 tons of steam per year, generating economic benefits of over 4.5 million yuan. Advertising, financial news, calendar, market updates – all available for free. Software for tracking futures markets, as well as software for monitoring crude oil and precious metals prices. Factories are adapting to the requirements of the EU’s REACH regulation by upgrading their existing heavy liquid paraffins and developing environmentally friendly versions of these products, in order to capture share in high-end market segments. In May 2018, trial production of the product and system replacement were completed, and it was officially launched on the market in June, resulting in improvements in quality. This not only increased economic benefits but also resolved the issue of unsold products. It meets the market demand for environmentally friendly products, generating annual economic benefits of tens of millions of yuan. To address the severe coking problem in the feed heat exchanger of the pre-distillation tower in the alkylbenzene complex plant, a liquid-phase hydrogenation deoxygenation technology was independently developed, for which an invention patent was granted. Industrial applications have achieved good results, with a deoxygenation rate of over 75%, and no secondary pollutants are generated during the process. After hydrogenation deoxygenation of the feed kerosene, the scaling condition in the heat exchanger was improved. The application of this technology has effectively improved the coking problem in the feed heat exchanger, reducing both the risks to the safe operation of the facility and environmental hazards, as well as saving on engineering costs. The implementation of this technology was a complete success, representing a new green and environmentally friendly technology. In addition, a series of granted patents including a multi-effect distillation tower and methods for recovering its waste heat, a device for deep dearomatization of light hydrocarbons, and an oil storage device with low nitrogen consumption, provide strong technical support for the factory to further advance its green transformation and development.
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Efficiency, energy savings, and safety have all seen improvements, thanks to the efforts of researchers.