Practical examples of use of high-pressure methanation catalysts

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1. Shandong Feicheng Asde Chemical Co., Ltd. is the first Φ800 axial-radial high-pressure alkylation tower in China. After multiple inspections and comparisons, the J108-2Q alkylation catalyst has been selected and the J106-2Q model is no longer used. 2. Shandong Alliance Chemical signed contracts and technical agreements with the current technical staff of Alankaite, organized production, quality control and testing, on-site technical services and after-sales tracking and inspections, and was recognized by the alliance company’s production management personnel. Current usage: Current usage of methanation: A (℃) B (℃) C (℃) Import CO (ppm) 481.5253253-CO2 (ppm) 61.56255254 - Export CO (ppm) 2.81255-253CO2 (ppm) 4.5 7-251-H2 (%) 71.81--248CH4 (%) 1.30 251-249 gas volume 62872NM3/h--251 inlet pressure 22.84MPa-252-outlet pressure 22.71MPa 3. Shandong Luxi Chemical Industry is designed by Nanjing Guochang Company. It is the largest non-isobaric alcohol alkylation device in China. The methanation furnace has one shaft and one diameter. The catalyst uses our company's J108-2Q, and the loading volume is 22m3. During the original start-up process of the company's device, the high-pressure alcohol cycle machine malfunctioned, causing the high-pressure alcohol catalyst to overheat. Later, the hydrogen released from the chlor-alkali workshop was mixed with chlorine into the system, poisoning the medium-pressure methanol chlorine. Eventually, the CO content of the high-pressure alkylation inlet reached more than 8000PPm, more than 40 times higher than the design. However, the trace amount at the alkylation outlet still met the design requirements. The operating data at that time is as follows:: June 2007 J108-2Q methanation catalyst usage thermocouple position A (℃) B (℃) C (℃) Import CO (ppm) 81702280mm219218-CO2 (ppm) 1124350mm248247-Export CO (ppm) 2.55530mm263 -2627660mm-259-CO2 (ppm) 3.19790mmm--24911050mm255-250 Gas volume 77546NM3/h13430mm--254 Inlet pressure 24.70Mpa15800mm-251-Outlet pressure 24.62MPa Due to extremely uneconomical long-term operation, Luxi Chemical has successively replaced the medium-pressure methanol and high-pressure methanol catalysts since August. The entire system has returned to normal. The operation of the methanation catalyst is now the same as that of the initial use. The activity has not declined, and the outlet is far less than the design index, which fully reflects the operational flexibility of the J108-2Q catalyst. The manufacturer is very satisfied with the performance of J108-2Q catalyst. 4. Sichuan Meifeng Chemical Sichuan Meifeng is one of the largest small nitrogen fertilizer companies in China and one of the top ten trustworthy enterprises in China. It has always had extremely strict requirements on the performance of catalysts and has now appointed Aliankat as the designated supplier of copper-based low-change catalysts and methanation catalysts. The company has achieved remarkable results in energy conservation and consumption reduction, and is an advanced unit that meets emission standards. 5. Hebei Xinhua Guochang high-pressure double-A unit uses Changshu Kaituo high-pressure methanol catalyst and Yankaite J108-2Q high-pressure alkylation catalyst. It is now running very ideally. In one year of use, the operating conditions have not changed. The export trace amount is less than the design value, which can fully meet the design requirements. 6. Hunan Zhicheng Chemical Guochang’s high-pressure double-A unit uses Nanhua Institute of Chemical Technology’s high-pressure methanol catalyst and Aliankat J108-2Q high-pressure alkylation catalyst, and has now been put into use. The usage is as follows: inlet temperature: 228℃, hot spot temperature: 265℃, the methanation furnace does not turn on the electric furnace to maintain self-heating balance ； Import CO: 4000ppm, which is 20 times higher than the design. The export trace amount is only 5ppm, which still meets the design requirements.