Methanol Weekly Topic: What are the advantages and disadvantages of the various methanol production technologies in use domestically? Attached materials for download 2015.11.09--...
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This post was last edited by TH373637 on 2015-11-11 11:29. Methanol – Weekly Topic: What are the advantages and disadvantages of the various methanol production technologies in use domestically? 2015.11.09--11.16
This post was last edited by TH373637 on 11-10-2015 at 15:02. Table 1: A brief comparison of low-pressure methanol synthesis reactors. Type: SPC, ICI, cold-quench, Lurgi, shell-and-tube, Linde, spiral, MRF, Linde, JW. Catalyst layer temperature difference: small, large, small, small, large. Catalyst production intensity: highest, large, large, large, large. Cycle ratio: smallest, large, large, large, smaller. Catalyst lifespan: longest, longer, long, short, short. Highest one-pass conversion rate: highest, lowest, high, low, low, low. Structural reliability: very good, good, poor, fair, poor, good. Ease of scale-up: easy, easy, difficult, difficult, easy. Recovery of heat and by-product steam: none or low pressure, medium pressure, medium pressure, medium pressure, low pressure. Process rationality: simple, simple, reasonable, simple, simple, reasonable. Operating rate (stability): highest, lowest, higher, higher. Presence of large-scale operating plants (400,000 tons/year or more): yes, no, yes, no, yes, no
Luchi synthesis towers account for 50-60% of the market share, and their production capacity makes up 70% of the total. In terms of functionality, these towers integrate the reactor, waste heat exchangers, and heaters into one unit; they are easy to operate, allow for smooth start-up and shutdown processes, ensure uniform catalyst reduction, and thus guarantee stable performance from both the synthesis tower and the associated equipment. It’s hard to put it succinctly to summarize these things.
Our factory uses DAVY’s synthesis towers. In recent years, many JM-DAVY projects have been undertaken – why isn’t there any comparison for these? ?
For your device, providing point data for everyone to learn * how about that?
The process package belongs to DAVY; it involves natural gas and methanol. The synthesis tower was designed by DAVY and manufactured in South Korea by Doosan, using catalysts provided by Zhejiang Wanhua (which acquired DAVY). David’s synthesis tower is of the shell-and-tube type; water flows inside the tubes while the catalyst is placed between them. Air flow is distributed through a central tube, and the entire synthesis system consists of two towers connected in series and parallel. Fresh gas is distributed proportionally to the two towers, and a compressor is used before the feed to these towers to increase the pressure slightly.