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Device for improving sulfur recovery rate and its recovery method

A recovery device and recovery rate technology, applied in chemical instruments and methods, sulfur compounds, sulfur preparation/purification, etc., can solve the complex process, high operating costs and energy consumption, and tail gas emission indicators that cannot meet environmental protection in environmentally sensitive areas. requirements and other issues, to achieve the effect of simple process, low investment and operating costs

Inactive Publication Date: 2018-09-14
SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD
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Problems solved by technology

[0002] The raw material of the Claus sulfur recovery unit mainly comes from the acid gas containing H2S in the low-temperature methanol washing unit. The highest sulfur recovery rate in the prior art is only 97%, and the concentration of H2S in the exhaust tail gas is high. Various forms of H2S in the conventional Claus tail gas The sulfur and its sulfides are absorbed by hydrogenation and reduced to H2S, and then discharged after combustion. This method has a high total sulfur yield, but the process is complicated and the construction investment is twice that of conventional Claus. The operating cost and energy consumption are high, and the tail gas emission index (sulfur content) can no longer meet the environmental protection requirements of environmentally sensitive areas

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  • Device for improving sulfur recovery rate and its recovery method

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Firstly, the device for improving the recovery rate of sulfur will be introduced. This device belongs to the recovery device. The device for improving the sulfur recovery rate includes a tail gas recovery device in the sulfur production process, a shift gas recovery device and a circulation system. The present invention installs the tail gas recovery device and the shift gas recovery device in the sulfur production process together, and the remaining products in the recovery process pass through The recycling system is used repeatedly, which not only saves costs, but also improves the efficiency of recycling.

[0019] The recovery device in the sulfur production process includes Claus reactor 1, Claus converter, Claus tail gas hydrogenation reduction system, and cooling system. Claus reactor 1 and Claus converter are connected together to have a recovery syste...

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Abstract

The invention relates to a device for increasing a recovery rate of sulfur and a recovery method of sulfur. The device comprises a sulfur production process tail gas recovery device, a shift gas recovery device and a circulating system. With the adoption of the recovery device and method, the sulfur recovery rate can be close to 100%, and further, the device and the method have the advantages of simple process and low investment and operating cost, and are suitable for large-scale industrial application.

Description

technical field [0001] The invention relates to the technical field of sulfur recovery, in particular to a method for improving the total sulfur yield of a sulfur recovery device by washing acid gas with low-temperature methanol to recover sulfur. Background technique [0002] The raw material of the Claus sulfur recovery unit mainly comes from the acid gas containing H2S in the low-temperature methanol washing unit. The highest sulfur recovery rate in the prior art is only 97%, and the concentration of H2S in the exhaust tail gas is high. Various forms of H2S in the conventional Claus tail gas The sulfur and its sulfides are absorbed by hydrogenation and reduced to H2S, and then discharged after combustion. This method has a high total sulfur yield, but the process is complicated and the construction investment is twice that of conventional Claus. The operating cost and energy consumption are high, and the tail gas emission index (sulfur content) can no longer meet the envi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/04
CPCC01B17/0408C01B17/0426
Inventor 范西四孙波袁洪娟
Owner SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD
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