What kind of valves are mainly used for coal powder transportation in gasification units?
Thread Content
I would like to ask my friends: in coal gasification units, what type of valves are mainly used for transporting coal powder? Are butterfly valves or ball valves the most common ones? How effective is it?
Ball valves are the most common type. Their wear resistance and ability to provide dual sealing make them more suitable for transporting coal powder
How are ball valves performing? I heard that there are some problems with the coal powder lockhopper valves used in Yueyang, Anqing, and Liuhua – is that true? What exactly is the problem? If anyone knows, please introduce it. Thank you!
There are quite a few ball valves. For the Linquan project, apart from the valves manufactured by Beijing Aerospace Coal Chemical Industry itself, all other valves (including imported ones) have encountered problems at some point.
It would be better to choose a specialized wear-resistant ball valve.
For ball valves and disc valves, I think disc valves are better, as they have a longer lifespan and achieve zero leakage.
Ball valves, or special ball valves, are very expensive and troublesome
Hard-sealed ball valves – those from Shanghai Kaiweixi are of good quality. Phone numbers: 021-57491111, 13954116898, Chen
Personally, I think disc valves offer better planar sealing performance, and it’s no problem for them to achieve an ANSI CLASS 600 pressure rating. It is said that there is a company in Shanghai that manufactures disc valves, which are being used very effectively in Xuzhou Zhongneng’s 600-pound, 200-inch diameter disc valves, having replaced the imported ones.
It seems that butterfly valves are not used very often, right? ? ?