【Major Industrial Equipment in the Chemical Industry】322 – China’s first domestically produced PDH compressor has passed acceptance testing

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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. China’s chemical processing equipment has also seen significant progress, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and increased use of domestic equipment. We invite everyone to share their insights, discuss these topics, and cheer for Made in China as well as support the development 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 participate actively! https://bbs.hcbbs.com/thread-2079686-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Forum Website) Summary post on the series 【Major Industrial Equipment in the Chemical Industry】 https://bbs.hcbbs.com/thread-3312079-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Forum Website) -------------------------------------------------- Recently, the new type of centrifugal compressor jointly developed by Shenyang Blower Group Co., Ltd. and Jiangsu Yanchang Zhongran Chemical Co., Ltd. has successfully passed the factory testing phase and is now ready to enter the stage of on-site installation and commissioning. Developed based on the LUMMUS process technology for compressors of product gas in 600,000 tons/year propane dehydrogenation (PDH) units, this product is a key core equipment for the expansion of the First Phase of Zhongran Project, and it constitutes a technology-intensive type of major equipment. The compressor features a configuration of \"motor + gearbox + high-pressure cylinder + low-pressure cylinder\", employing two-cylinder three-stage compression; it has a power output of 37 megawatts and an impeller diameter of 1.5 meters. The first stage of the unit features a dual-air-inlet design, with a volumetric flow rate equivalent to that of 100,000-class air separation compressors. It is China’s first domestically produced compressor for PDH units, ending the reliance on foreign technology in such equipment in the country; its performance parameters are currently at the world’s leading level. Image: Low-carbon olefins are important basic raw materials in the organic chemical industry. They are primarily produced as a by-product or co-product of steam cracking and catalytic cracking processes in refineries, and their production is largely constrained by the output of ethylene as well as gasoline and diesel, making it difficult to meet the rapidly growing market demand. The overall propylene yield of the PHD process can reach 80%–90%, which is much higher than the 33% achieved by steam cracking; moreover, the equipment investment required is about 30% lower compared to hydrocarbon cracking. In China, the product gas compressors used in PDH units are generally imported; this results in long manufacturing cycles, high capital investment, and high maintenance costs later on. Localizing these equipment will bring long-term economic benefits to enterprises.