Technology and device for recovering volatile tail gas in sulfur collection pit of sulfur device of oil refinery

Abstract

The invention relates to a technology and device for recovering tail gas in a sulfur collection pit, in particular to a technology and device for recovering the volatile tail gas in the sulfur collection pit of a sulfur device of an oil refinery. The technology comprises the steps as follows: firstly, a water jacket is used for condensing volatile gas and elemental sulfur in the sulfur collection pit, and condensed sulfur substance returns to the sulfur collection pit; the volatile gas in a supergravity settling reactor is absorbed by a desulfurization solution under the action of a catalyst, and is oxidized into elemental sulfur; and then the desulfurization solution containing elemental sulfur and part of hydrogen sulfide is oxidized and regenerated in a jet regenerator, elemental sulfur is subjected to flotation, returns to a sulfur melting kettle and generates a sulfur product, meanwhile, purified gas is fed into the supergravity settling reactor, discharged out from the upper part of the settling reactor and fed into a combustion furnace finally, and residual sulfur and sulfur components are removed. Therefore, the volatile gas is recovered, the sulfur product is generated, furthermore, the quantity of sulfur fed into the combustion furnace is reduced, the emission reduction of sulfur dioxide is realized, and the energy consumption of the combustion furnace is reduced.

Description

technical field [0001] The invention relates to a process and device for recovering tail gas from a sulfur collection pit, in particular to a process and device for recovering volatile tail gas in a sulfur collection pit of a sulfur plant in an oil refinery. Background technique [0002] In the prior art, for the treatment of volatile tail gas (the main component is hydrogen sulfide) in the sulfur collection pit of the refinery sulfur plant, it is generally used to discharge directly without treatment, or to use the sulfur component in the combustion tail gas of the incinerator to generate Discharge of sulfur dioxide; no matter which method is used, it will cause environmental pollution and energy consumption of the incinerator. In the prior art, it is impossible to realize the recovery of volatile tail gas to generate product sulfur and reduce the amount of sulfur components leading to the incinerator, so as to achieve the purpose of reducing sulfur dioxide emission and red...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, for the treatment of volatile tail gas (the main component is hydrogen sulfide) in the sulfur collection pit of the refinery sulfur plant, it is generally used to discharge directly without treatment, or to use the sulfur component in the combustion tail gas of the incinerator to generate Discharge of sulfur dioxide; no matter which method is used, it will cause environmental pollution and energy consumption of incinerators

In the existing technology, it is impossible to recover volatile tail gas to generate product sulfur, reduce the amount of sulfur components leading to the incinerator, so as to achieve the purpose of reducing sulfur dioxide emissions and reducing the energy consumption of the incinerator

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