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A process and device for recovering volatile tail gas in a sulfur collecting pit of a sulfur plant in an oil refinery

A sulfur device and tail gas recovery technology, which is applied in the direction of combustion method, lighting and heating equipment, combustion type, etc., can solve the problems of incinerator energy consumption, environmental pollution, and the inability to recover volatile tail gas sulfur, etc., so as to reduce energy consumption, The effect of lowering the concentration

Active Publication Date: 2016-01-20
JIANGSU WISDOM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A process and device for recovering volatile tail gas in a sulfur collecting pit of a sulfur plant in an oil refinery

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Embodiment 1

[0016] A process for recovering volatile tail gas in the sulfur collection pit of a refinery sulfur plant is carried out according to the following steps:

[0017] (1) The volatile tail gas and elemental sulfur from the sulfur pit are condensed by the water jacket, and the elemental sulfur returns to the sulfur pit. The volatile gas enters from the upper part of the supergravity sedimentation reactor. The gas is sucked into the reactor and passed through the high-speed centrifugal liquid and stator rectification mechanism. Splitting, shearing and breaking the gas into microbubbles and evenly dispersing them in the desulfurization solution, so that rapid mass transfer, absorption and oxidation reactions occur between the gas and liquid phases. The desulfurization solution absorbs the hydrogen sulfide in the gas phase into a liquid phase to generate divalent sulfide ions; the catalyst oxidizes the divalent sulfide ions to elemental sulfur. The main components of the desulfurization...

Embodiment 2

[0022] This embodiment is a volatile tail gas recovery device in the sulfur collection pit of a sulfur plant in an oil refinery. figure 1 As shown, it includes a supergravity reactor 2, a jet regenerator 3, and a sulfur melting tank 4; the upper air inlet of the supergravity reactor is connected to the volatile tail gas of the sulfur collecting pit 1 through an inlet pipe 5 provided with a condensed water jacket The elemental sulfur outlet, the liquid outlet at the bottom of the supergravity reactor 2 is connected to the rich liquid inlet on the upper part of the jet regenerator 3 through the rich liquid outlet pipe 7 provided with the rich liquid pump 6, and the upper part of the supergravity reactor 2) The purified gas outlet of the jet regenerator 3 is connected to the incinerator through a pipeline; the lean liquid outlet of the jet regenerator 3 is connected to the desulfurization lean liquid tank 8 through a pipeline, and the desulfurization lean liquid tank 8 is connected ...

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Abstract

The invention relates to a process and device for recovering tail gas from a sulfur collection pit, which is a process and device for recovering volatile tail gas in a sulfur collection pit of a sulfur plant in an oil refinery. Firstly, a water jacket is used to condense the volatile gas and elemental sulfur in the sulfur collection pit. The elemental sulfur is returned to the sulfur pit; the volatile gas is absorbed by the desulfurization solution under the action of the catalyst in the supergravity sedimentation reactor, and is oxidized into elemental sulfur; then the desulfurization solution entrained with elemental sulfur and part of hydrogen sulfide is oxidized and regenerated in the jet regenerator , Elemental sulfur flotation returns to the sulfur melting tank to generate product sulfur, while the purified tail gas is passed into the supergravity settling reactor, discharged from the upper part of the settler, and finally passed to the incinerator to remove residual sulfur and sulfur components. In this way, the volatile gas can be recovered, the product sulfur can be generated, and the amount of sulfur components in the incinerator can be reduced, so as to reduce the emission of sulfur dioxide and reduce the energy consumption of the incinerator.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/52B01D53/96F23G7/06
Inventor 孙立宇潘永涟刘兴朱瑞贺李翠屏牛世军
Owner JIANGSU WISDOM ENG TECH