Why do people like to use Wood’s techniques?
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Is the domestic technology really that much worse than his? Wood’s technology is also extremely expensive
Coke oven technology? Skills are valuable, especially unique ones; how much they’re worth depends on the other person’s willingness to pay.
Knowledge is money; if it’s too expensive, then don’t buy it
New designs should be introduced to improve domestic design and technical standards. Judging from the technologies adopted by our company, foreign technology development possesses unique features, and its safety-oriented design concepts are excellent; such technologies should be introduced whenever possible.
Bro, at the moment, Germany has the best technology in the field of coking in the world, and we still have a certain gap compared to them. In the past, many of the coke ovens designed in China were first introduced from abroad before being improved. The largest coke oven designed in China currently is the 7m coke oven developed by the Jiaonai Research Institute; its technology is not very different from Wood’s, but there are still some differences. The 7.63m capacity coke ovens produced by Wood have the following advantages: 1. They require less land area in the factory compared to traditional coke ovens； 2. Few coal towers and coke oven machinery are in operation, with a limited number of operators ； 3. Coke ovens have low pollutant emissions, provide good environmental protection, a long service life, and a high degree of automation, especially in terms of environmental protection. Wood Company does an excellent job and is worth studying in detail*. They are also very advanced in terms of automation, so we should indeed introduce such technologies. Compared to the entire industry, that amount of money isn’t much; what’s important is to thoroughly understand these technologies once they are introduced, and to conduct research based on them, as this will facilitate progress in our own industry. The purpose of introducing such technologies is to eventually be able to do without them. Last edited by ryn on 2009-3-22 20:48.]
Hello, original poster. The post above was written by me yesterday; I only pointed out the advanced aspects of Wood coke ovens and why they are worth learning from, without thoroughly examining their shortcomings at that time. This led to misunderstandings for you and other users, and I am truly sorry. Today I consulted some colleagues and learned about the deficiencies of such ovens as well as ways to improve them, so I am adding this information here. The 7.63m coke ovens manufactured by Wood Company that were introduced into our country came with their automation systems as well (with some manufacturers making their own modifications); this has led to maintenance difficulties. Whenever problems arise, it is necessary to invite foreign experts, which is time-consuming, labor-intensive, and costly ； Another issue is related to the heating level; I believe the main reason for this is that the design was based on the characteristics of coking coal in Germany, which means that the heating design of these coke ovens is not suitable for China’s coal resources. As a result, the temperature in the roof area of the oven becomes too high and difficult to control, usually exceeding 900 degrees Celsius, with some cases even reaching over 950 degrees Celsius. This has an impact on the chemical processes involved, and it poses difficulties for workers and frontline managers. Since this problem was identified, there are mainly two improvement measures being taken in China: one is to change the original three-stage heating system to a one-stage or two-stage heating system, by sealing off the unnecessary air inlets; this has had some effect, though it isn’t very significant ； Secondly, it involves changing the height of the heating level; for example, Yankuang International Coking uses 1210 mm, Taiyuan Iron and Steel as well as Maanshan Iron and Steel also use 1210 mm. The Caofeidian plant of Shougang uses 1440 mm, while Shagang seems to use 1550 mm. I’m not sure about the specific effects of these differences. However, I believe that improvements will definitely be successful, which also reflects the value of introducing such changes; after all, the process of making improvements is much faster than the design process.