Cause analysis and solving measures of blockage in CT-LOP sulfur recovery reactor

Sulfur blocking is one of the main problems of complex iron process. There are different degrees of blockagein various devices of complex iron process. In this paper, blockage in reactor of complex iron (CT-LOP) liquid phase redox process unit independently developed by Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company was discussed.The blockage of CT-LOP process at the circulating reactor, purge air pipeline and sulfur slurry passage during operation were analyzed comprehensively. Some measures were put forward, such as the optimization of impulse air pipeline, the regular replacement of duckbill distributor and optimization of reagent adding operation, which could provide solution ideas and reference for the blockage of liquid phase redox process or single well desulfurization.