External regeneration method and device for sulfur recovery device agent

Abstract

The invention discloses an external regeneration method and device for a sulfur recovery device agent. Two independent external agent regenerators which are main and standby are arranged outside a reactor of the sulfur recovery device, and a regeneration distributor with a four-stage tower structure is arranged in each external agent regenerator; the regeneration distributor adopts a multi-ring equal-ratio gas distribution structure, a pore gas distribution disc and a gas distribution film are arranged on a gas distribution pipe of the regeneration distributor, and a solution flows out of a reactor reaction area of the sulfur recovery device and flows into an external agent regenerator from a downcomer for regeneration, and overflows to a reactor settling area of the sulfur recovery device through an agent outlet at the top of the external agent regenerator, so as to form agent absorption and regeneration cycle. The independent external regenerator is established, a special gas distribution disc, a gas distribution film regeneration distributor and a steam stripping technology are applied to complete agent circulation, and an external agent regeneration technology of the whole sulfur recovery device is formed, so that the utilization rate of regenerated air and the agent regeneration efficiency can be effectively improved, the sulfur blockage probability can be reduced, and the long-period operation of the sulfur recovery device can be realized.

Description

technical field [0001] The invention belongs to the technical field of petroleum refining, and in particular relates to an out-of-device regeneration method and device for a sulfur recovery device. Background technique [0002] The sulfur recovery unit applies complex iron desulfurization technology, which uses a neutral or weakly alkaline solution containing an oxidant to absorb H in the gas stream 2 S, the oxygen carrier in the solution will H 2 S is oxidized to elemental sulfur, and the solution is regenerated with air for recycling. Existing chelated iron desulfurization devices are designed to use integrated equipment for absorption reaction, spray reaction, chemical regeneration and sulfur sedimentation and separation, that is, complexed iron medicament (Fe 3+ L) Absorption stripping and regeneration of acid gas H in the reaction zone 2 After S, the formation of Fe-containing 2+ The L solution enters the four-way fan-shaped regeneration compartment for regeneration...

AI Technical Summary

Problems solved by technology

However, in the actual production process of the integrated equipment, there are problems such as rupture, shedding, and clogging of the air distribution film of the regenerative distributor, which affect the regeneration effect of the agent, the operation of the Roots blower, and the sulfur deposition and blockage of the regeneration compartment affect the flow of the agent, etc., involving many problems in the regeneration compartment. Both need to be shut down for processing, and the long-term operation of the sulfur recovery unit cannot be realized

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