Sulfuric acid pipeline antifreeze
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This post was last edited by sunjl1981 on 2013-1-6 23:51 The chlorine-drying sulfuric acid pipelines in our factory are not insulated with heat tracing. I would like to ask if there are any anti-freeze tips. This post was last edited by limingshuguang on 2007-12-25 11:07 ] # , , &
If the transformation is carried out under normal production conditions, it is recommended to insulate the sulfuric acid storage tank. Maintaining the sulfuric acid temperature will solve the problem. :lol
There is information on this in the forum, and I have replies on this. If you are interested, you can search for it. Generally, the chlorine drying process has a composite tower of bubble cap + packing, so the downcomer at the connection must be insulated, especially in the northern region, because the freezing point of 98% sulfuric acid is about 2-3 degrees (I can’t remember clearly). The overflow of a section of the tower must also be insulated. The freezing point of 80% dilute sulfuric acid is still relatively high. Of course, if the sulfuric acid concentration is controlled lower during winter production, the risk will be less, but enough attention must be paid, because once the sulfuric acid crystallization problem occurs, it will affect production at best, or cause chlorine pressure fluctuations and cause shutdown. This situation happened when my unit was originally started. This post was last edited by wlntjs on 2007-12-25 15:06 ]