The ammonia synthesis unit at Chongqing Jianfeng Chemical uses the SCST-231 low-temperature shift catalyst
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The ammonia synthesis unit at Chongqing Jianfeng Chemical uses SCST-231 low-temperature shift catalysts. Author/Source: Sichuan Shutai Chemical Technology Co., Ltd. Date: November 18, 2020. Clicks: 27. This year, Sichuan Shutai Chemical Technology Co., Ltd. has seen successive successes in selling low-temperature shift catalysts: after winning the bid for 300,000 tons per year of low-temperature shift catalysts for natural gas-based ammonia production at Ordos United Chemical in mid-August, and another bid in September for 450,000 tons per year of such catalysts for Hainan Fudao Chemical Fertilizer Plant under CNOOC, the company won another bid on September 28 for 110 tons of low-temperature shift catalysts for Chongqing Jianfeng’s second ammonia production facility, also using natural gas as a feedstock. Chongqing Jianfeng Chemical is a well-known large-scale chemical enterprise in China, producing 800,000 tons of synthetic ammonia and 1.3 million tons of urea annually. Both of its synthetic ammonia production units powered by natural gas utilize the low water-gas ratio Brown process technology imported from abroad. In July 2019, the SCST-231-53 type low-temperature shift catalyst developed independently by Sichuan Shutai Chemical was successfully installed in one of the company’s low-temperature shift units, replacing a well-known domestic catalyst. Under harsh operating conditions of full load and a low water-gas ratio (with the load remaining at 100% for extended periods and the water-gas ratio as low as 0.26), this catalyst achieved excellent performance: an inlet CO level of 3.2%, an outlet CO level below 0.16% (less than 50% of the design value), and a bed resistance as low as 20 Kpa or less. Therefore, after thorough consideration, the company chose the SCST-231-53 type low-temperature shift catalyst from Sichuan Shutai Chemical once again for this tender.
Sichuan Shutai Chemical Technology Co., Ltd. is a national high-tech enterprise (certificate number: GR201151000140), one of China’s top 100 fertilizer suppliers, and an advanced unit in brand development. It complies with the IS09001:2008 quality management standard. To date, the company holds 6 authorized patents and 2 exclusive licenses for invention patents. Located in Daying County, known as the pearl of central Sichuan, this county lies at the heart of the Chengdu-Chongqing 1-hour economic zone; it is also a city where three major economic pilot zones in China meet. Daying is referred to as the “backyard of Chengdu and Chongqing.” The Chengdu-Chongqing Expressway, Chengnan Expressway, Mianyu Expressway, Chengdu-Chongqing intercity railway, and Chengda Railway all pass through this area, making it a renowned hub for tourism, the petrochemical industry, and textiles. The company is primarily engaged in the research, development, production, testing, and maintenance of catalysts for ammonia synthesis plants, methanol production facilities, and hydrogen generation units. To date, it has brought 12 different types of catalyst products across four series to the market. The company operates its own catalyst research center, equipped with devices for evaluating catalyst performance as well as for measuring their physical and chemical properties. It can also provide customers with analysis of major and trace components in hydrogen and nitrogen gases. The company attaches great importance to the recruitment of high-level technical talent; a large number of experienced professionals in the field of catalysts have joined the team. These individuals come mainly from institutions such as the Southwest Chemical Research Institute, Sichuan Chemical Group, Nanhua Catalyst Factory, and Sichuan University of Science and Engineering, as well as large enterprises. This has provided the company with a strong starting point, enabling it to become a high-tech enterprise that receives significant support in the central Sichuan region. The company also collaborates with Sichuan University of Science and Engineering, the Chinese Academy of Sciences, and other institutions to continuously improve and explore aspects such as the research, production, manufacturing, and use of catalysts for hydrocarbon vapor (hydrocarbon) conversion, methanation, low-temperature shift, and methanol synthesis. By applying the latest material manufacturing technologies to catalyst preparation, excellent results have been achieved, and the overall performance of the products is now at the world’s advanced level.