Treatment technology and equipment for carbon disulfide production process gas

A production process, carbon disulfide technology, applied in the field of sulfur industry, can solve problems such as difficult control of catalytic conversion temperature, and achieve the effect of solving the problem of difficult control of catalytic conversion temperature and efficient recovery

Inactive Publication Date: 2017-06-13
安徽宣城金宏化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the purposes of the present invention is to provide a treatment process for carbon disulfide production process gas in order to solve the above-mentioned problems in the sulfur recovery of the hydrogen-containing process gas produced in the existing carbon disulfide production process, which solves the problem of the traditional process on catalysis The problem that the conversion temperature is difficult to control effectively improves the conversion rate of the process, and the final exhaust gas (SO2 concentration is less than 30ppm) is far below the national standard concentration

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  • Treatment technology and equipment for carbon disulfide production process gas
  • Treatment technology and equipment for carbon disulfide production process gas
  • Treatment technology and equipment for carbon disulfide production process gas

Examples

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Embodiment 1

[0037] A process gas treatment process for the production of carbon disulfide, which divides the process gas treatment into two stages: oxidation catalytic recovery and hydrogenation catalytic reduction. The sour gas combustion furnace 1 is combusted with natural gas NG and compressed air CA at 950°C, and 80% of the air volume is controlled by the complete combustion of hydrocarbons and 1 / 3 of hydrogen sulfide to generate sulfur dioxide. 2 S: SO 2= 2:1 to control the remaining 20% ​​of the air volume. The high-temperature process gas after combustion enters the steam generation system of the acid gas combustion furnace, and produces 2.2MPa medium-pressure steam MS by-product, which is cooled to 350°C after heat exchange. The process gas enters the first-stage condensing cooler 2, and produces 0.35Mpa low-pressure steam LS in the first-stage condensing cooler 2. At the same time, the process gas itself is cooled to 160°C, and the condensed liquid sulfur is sealed from the outl...

Embodiment 2

[0040] A treatment process for producing process gas from carbon disulfide, as attached figure 1 As shown, the treatment of process gas is divided into two stages: oxidation catalytic recovery and hydrogenation catalytic reduction. , Air CA burns at 1000°C, 80% of the air volume is controlled by the complete combustion of hydrocarbons and 1 / 3 of hydrogen sulfide to generate sulfur dioxide, and according to the H in the tail gas 2 S: SO 2 = 2:1 to control the remaining 20% ​​of the air volume. The high-temperature process gas after combustion enters the steam generation system of the acid gas combustion furnace, and produces 2.2MPa medium-pressure steam by-product, which is cooled to 350°C after heat exchange. The process gas enters the first-stage condensing cooler 2, and produces 0.35Mpa low-pressure steam in the first-stage condensing cooler 2. At the same time, the process gas itself is cooled to 160°C, and the condensed liquid sulfur is discharged from the outlet of the...

Embodiment 3

[0043] A process gas treatment process for the production of carbon disulfide, which divides the process gas treatment into two stages: oxidation catalytic recovery and hydrogenation catalytic reduction. The sour gas combustion furnace 1 is combusted with natural gas NG and air CA at 1000°C, and 80% of the air volume is controlled by the complete combustion of hydrocarbons and 1 / 3 of hydrogen sulfide to generate sulfur dioxide. 2 S: SO 2 = 2:1 to control the remaining 20% ​​of the air volume. The high-temperature process gas after combustion enters the steam generation system of the acid gas combustion furnace, and produces 2.2MPa medium-pressure steam by-product, which is cooled to 350°C after heat exchange. The process gas enters the first-stage condensing cooler 2, and produces 0.35Mpa low-pressure steam in the first-stage condensing cooler 2. At the same time, the process gas itself is cooled to 160°C, and the condensed liquid sulfur is discharged from the outlet of the ...

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Abstract

The invention discloses a treatment technology and equipment for carbon disulfide production process gas. The treatment technology comprises the specific steps that 1, acid gas, fuel gas and air are fed into an acid gas combustion furnace for a combustion reaction; 2, process gas generated inside the acid gas combustion furnace is introduced into a converter reactor; 3, sulphur is separated out from the process gas generated after a reaction of the converter reactor, sulphur dioxide and elemental sulphur in generated tail gas are subjected to a hydrogenation reduction to obtain hydrogen sulfide, and organic sulphur is hydrolyzed into hydrogen sulfide; 4, H2S and CO2 are recycled circularly from the tail gas containing hydrogen sulfide generated in the step 3 through an amine solution, and the purified tail gas enters a tail gas burning furnace to be burnt and exhausted. By improving the technology and the equipment, sulphur in the process gas containing hydrogen sulfide is efficiently recycled, the total sulphur recycling rate reaches 99.8% or above, the problem that the catalytic conversion temperature of a traditional technology is hard to control is solved, and the SO2 content in the finally-exhausted tail gas is much lower than the concentration of the national standard.

Description

[0001] A treatment process and equipment for carbon disulfide production process gas. technical field [0002] The invention relates to the field of sulfur industry, in particular to a treatment process and equipment for oxidation catalysis and hydrogenation reduction of carbon disulfide production process gas. Background technique [0003] In the production process of carbon disulfide, the 2 Most of the sulfur recovery and tail gas treatment processes in S acid gas are carried out around the Claus process. The basic process of the traditional Claus process is: 2 The acid gas of S is sent into the catalytic conversion reactor under the condition of air distribution, and the catalytic reaction is carried out at the temperature of 200°C~350°C. The reacted process gas passes through the sulfur condenser, and at the temperature of 130°C~200°C, Sulfur is separated by condensation, and low-pressure steam is produced as a by-product, and the uncondensed tail gas gas phase is furth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/04C01B32/72B01D53/52B01D53/62
CPCB01D53/52B01D53/62C01B17/0404Y02P20/10
Inventor 赵和平张宏
Owner 安徽宣城金宏化工有限公司
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