Hangzhou Linda’s performance in vertical water-cooled methanol synthesis (urgent request)

I have it here, but it’s not in electronic format and it’s from a few years ago. You can call the manufacturer, and they will get back to you

I just need to know how many companies are using or have designed Linda’s vertical water-cooled methanol synthesis technology; it doesn’t matter which specific companies are using it.

Linda’s isothermal reactors have been used in hundreds of projects for methanol production; 27 units utilize Linda’s low-pressure methanol synthesis technology along with corresponding synthesis towers, resulting in a total capacity of 4,110 kt. Currently, 12 units have been successfully put into operation, with a total capacity of over 1,000 kt. Among the operational projects, the large-scale methanol plant in Inner Mongolia operated by Tianye, which uses natural gas as raw material and has an annual production capacity of 200 kt, has passed the assessment and verification, exceeding its designed capacity ； The 200kt methanol produced at Shaanxi Weihua using Texaco water-coal slurry for gas generation was evaluated by experts from the Shaanxi Provincial Department of Science and Technology ； Yunnan Dawa’s methanol production plant, capable of producing 200kt per year from coke oven gas, was also successfully put into operation recently. Twelve units are set to come online in the near future, with a total capacity of 2,450 kt. These include the methanol synthesis unit at Dalian Dahuahua, which has its LEF already installed and is ready for operation; while the methanol synthesis units at Shanxi Lanhua and Hulunbuir Dongneng, each with an annual capacity of 200 kt, have been completed and are awaiting shipment. Linda Company adopts an objective attitude toward the patented technology for methanol synthesis reactors it has developed, as well as their actual performance – one that is based on facts and real data. Hundreds of people have visited the 12 low-pressure methanol synthesis units that are already in operation to examine them firsthand and analyze the data from their online operations; this is something that is rare among other patent developers both domestically and internationally. Through on-site inspections, it has been clearly demonstrated that the JW isothermal large-scale low-pressure methanol tower reactor boasts advantages such as a small volume, a small temperature difference in the catalytic bed, a high CO conversion rate, high productivity, low consumption of feed gas, low catalyst usage, and a high packing efficiency. (Note: This is information from May 2008)

Hehe, thank you very much for the information. If it weren’t for Linda’s performance in terms of the low-pressure air-cooled, uniform-temperature methanol synthesis process, what I’m interested in are the achievements related to the use of Linda’s vertical water-cooled methanol synthesis technology. There are differences between these two methanol synthesis process technologies.

Sichuan Longqiao Chemical’s 20KTPA methanol plant came online (April 2008); Inner Mongolia Sugulila’s 150KTPA methanol plant (expected to come online by the end of 2008)

Some time ago I got in touch with Linda Company, and they sent me quite comprehensive information. If you want the complete details, feel free to leave a message for me. Linda’s methanol synthesis towers come in three types: air-cooled, vertical water-cooled, and horizontal water-cooled. Below is a separate introduction to each of these three types. 1. Structure and characteristics of the Linda uniform-temperature air-cooled low-pressure methanol synthesis tower. The methanol synthesis tower consists of upper and lower end caps, a shell and internal components, support frames, and other parts, as shown in the structure diagram. Features: 1) The uniform-temperature air-cooled tower was developed based on the strong exothermic nature of the methanol synthesis reaction, as well as the poor heat resistance of copper-based catalysts and their narrow operating temperature range; it results in a small temperature difference within the catalyst layer. 2) The gas flow cross-section in the catalyst layer is large, resulting in a pressure difference across the synthesis tower of approximately 0.15~0.2 MPa. 3) Continuous heat exchange occurs throughout the entire bed; cold air inside the tubes enhances heat transfer, allowing for stable control of the bed temperature ； 4) The catalyst is placed outside the tube, with a high packing efficiency of up to 70% ； 5) Multi-layer cold tube bundle configuration, offering strong structural reliability and ease of scaling up ； 6) The materials are fully domestically produced, resulting in lower equipment investment. 7) Short production cycle. 8) A mathematical calculation model for the reactor was established, making the design of the reactor and the conditions for scale-up more complete and reliable. 2. Structure and characteristics of the vertical water-cooled low-pressure methanol synthesis tower with uniform temperature distribution by Linda. The vertical water-cooled type resembles the air-cooled internal components, featuring a multi-tube assembly structure as shown in the figure. Features: 1) Heat exchange with the catalyst layer is achieved through forced circulation of boiler water, increasing the water flow rate and thereby enhancing the heat transfer capacity. 2) It can produce 2.0–4.0 MPa medium-pressure steam as a by-product. 3) The gas flows axially within the tower, with a uniform gas distribution across the cross-section, resulting in good catalyst efficiency. 4) Forced water circulation helps to reduce the syngas circulation ratio and lower compression power consumption. 5) It incorporates many advantages of the uniform-temperature air-cooled type in terms of structure. 3. Structure and features of the horizontal water-cooled low-pressure methanol synthesis tower by Linda. The horizontal water-cooled reactor was developed to meet the needs for larger-scale methanol production facilities in China, and it is suitable for plants with a capacity of over 400,000 tons. The reactor is equipped with horizontal heat exchange tubes, through which hot water circulates forcibly to remove the heat generated by the reaction. Gases present in the catalyst outside these tubes exchange heat with the heat exchange tubes in a countercurrent manner, from top to bottom; the heat exchange tubes are arranged in a tube bank configuration. This arrangement enhances heat transfer during the reaction and ensures a uniform distribution of the reaction gases, thereby minimizing the impact of temperature and concentration variations caused by wall effects on the reaction. It creates optimal conditions for methanol synthesis using the catalyst and prevents the catalyst layer from overheating and becoming inactive. Features: 1) Through finite element comparative analysis, ICI shows that with internal water cooling and external gas cross-flow, the heat transfer coefficient is high, resulting in a smaller heat exchange area required under the same heat transfer amount. 2) A tube array layout is adopted, with the tubes arranged compactly, a larger cold surface area, and strong heat transfer capacity. 3) Low recycle ratio and high methanol yield; the recycle ratio can be reduced to around 3–3.5, the methanol concentration at the outlet of the tower increases from 5% to over 8.5%, and the overall conversion rate of CO reaches over 98%. 4) High steam yield and high energy utilization, with 2.5–4.0 MPa medium-pressure steam generated per ton of methanol produced. 5) The reactor structure is easy to scale up, the methanol synthesis pressure can be reduced, and the compression work for fresh gas is decreased. 6) Low circulating gas volume, radial flow pressure difference

2010 Yulin International Coal Chemical Technology and Equipment Expo. Consultation QQ: 609798793 Phone: 18700259536, Lu Li