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专利名称：Flare stack and method of flaring waste gas发明人：Zink, John S.,Reed, Robert D.申请号：EP80301449.7申请日：19800502公开号：EP0039376A1公开日：19811111
专利附图：
摘要：In a flare stack system for the flaring of waste gases, in which the flare stack(10) es equipped with the steam injection parts (16, 18, 20), such as nozzles (20) ormanifolds (16), adjacent the flame zone (12) at the outlet end of the stack, means areprovided for alternate injection of air (32) from the blower (42) or live steam (50) through
the steam injection parts. The alternate flow is controlled by two pneumaticallycontrolled valves (36, 48) in the blower air line (32) and the other in the steam line (50),such that when one valve is closed, the other is open, and vice versa. The objective of thealternate supply of air and steam is for the purpose of cooling the steam injection partswhen the full flow of steam is not required, because there is no waste gas flow or only aminimal gas flow. In that case, the heat of the maintenance gas flow may be sufficient toinjure the steam injection parts, which must be coiled by passage of a gas through them.When the ambient temperature is below freezing a small flow of steam is unsatisfactorysince it readily condenses to liquid, and can form ice over the parts of the main gas flowoutlets, etc. In this condition, air at low pressure is used to cool the parts and when thegas flow is large, the two valves are switched, the air is cut off and the full steam flow isinitiated.
申请人：JOHN ZINK COMPANY
地址：4401, South Peoria Tulsa, Oklahoma 74103 US
国籍：US
代理机构：Kerr, Simonne June
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