Abstract

The effective parameters at choosing an appropriate tail gas treatment process

Author(s): Hamid Reza Mahdipoor, Hajar Yousefian, Hamed Naderi, Majid Kakavand

In order to produce sulfur and also prevent environmental pollution, output acid gases from oil and gas refineries are converted to sulfur in sulfur recovery units (SRUs). The conversion of these pollutant gases to sulfur hardly exceeds 97% which leads to excessive sulfur dioxide sent to the flare and hence high pollution around refineries. Thus, with the current strict environmental regulations, it is necessary to somehow improve the performance of SRU. Tail gas treatment units can achieve overall efficiencies of more than 99% by eliminating a certain portion of the acid gases which are present in the tail gas of sulfur recovery units. In this paper, the technology of tail gas treatment will be investigated. Furthermore, the role of applying this unit in reduction of environmental pollutants is illustrated.