Selection of positive and negative pressure for exhaust gas absorption?
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I’ve been working on exhaust gas absorption recently, and there’s a question that’s confusing me: when should positive pressure absorption be used for exhaust gas absorption? (Gas from the fan outlet enters the absorption tower) When is negative pressure absorption used? (The gas entering the fan comes from the outlet of the absorption tower) Which one has a better effect?
1. Positive pressure should be quite common. 2. Some possibilities I’m considering: Increased pressure at the inlet may lead to corrosion and other issues, making it difficult to choose the right fan; or if maintenance becomes too complicated, it may be necessary to opt for extraction at the outlet instead
Normally, it operates under positive pressure; negative-pressure fans are prone to corrosion, so the decision should be based on the actual site conditions!