SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device

A sulfur recovery and process technology, applied in the fields of sulfur compounds, chemical industry, sulfur preparation/purification, etc., can solve the problems that the sulfur recovery effect cannot meet the environmental protection requirements, high safety control requirements, and long process flow, etc., to meet the requirements of sustainable safety The effect of operation, process safety and reliability, and short process flow

Active Publication Date: 2016-06-22
SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is long, requires the use of hydrogenation technology, and has high safety control requirements for the device, and the sulfur recovery effect cannot meet the needs of further improvement in environmental protection requirements

Method used

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  • SWSR (Sunway Sulfur Recovery)-7 technology and SWSR-7 device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A SWSR-7 sulfur recovery process, comprising the following steps:

[0042] ① The acid gas containing hydrogen sulfide is generated through the sulfur combustion furnace and the Claus reaction system to generate sulfur and sulfur tail gas, and the sulfur is recovered and sent to the liquid sulfur storage facility;

[0043] ② The tail gas from sulfur production is mixed with air and sent to the tail gas incineration system for incineration, and all sulfur-containing media are converted into SO 2 , forming SO 2 Flue gas, the temperature of the flue gas is 180°C, and the content of sulfur dioxide is about 12000mg / Nm 3 , and then enter the flue gas purification tower through recovered heat energy;

[0044] ③ Contains SO2 The flue gas contacts with absorbent 3wt.% hydrogen peroxide solution in the flue gas purification tower, the SO in the flue gas 2 It is absorbed by the absorbent, and the recycled absorbent enters the bottom of the tower to remove SO 2 The purified flue...

Embodiment 2

[0053] A SWSR-7 sulfur recovery process, comprising the following steps:

[0054] ① The acid gas containing hydrogen sulfide is generated through the sulfur combustion furnace and the Claus reaction system to generate sulfur and sulfur tail gas, and the sulfur is recovered and sent to the liquid sulfur storage facility;

[0055] ② After the sulfur production tail gas passes through the tail gas hydrogenation reduction system, it is mixed with air and sent to the tail gas incineration system for incineration, and all sulfur-containing media are converted into SO 2 , forming SO 2 Flue gas, flue gas temperature 270°C, sulfur dioxide content 600mg / Nm 3 , and then enter the flue gas purification tower through recovered heat energy;

[0056] ③ Contains SO 2 The flue gas contacts with absorbent 2.5wt.% hydrogen peroxide solution in the flue gas purification tower, the SO in the flue gas 2 It is absorbed by the absorbent, and the recycled absorbent enters the bottom of the tower t...

Embodiment 3

[0065] A SWSR-7 sulfur recovery process, comprising the following steps:

[0066] ① The acid gas containing hydrogen sulfide is generated through the sulfur combustion furnace and the Claus reaction system to generate sulfur and sulfur tail gas, and the sulfur is recovered and sent to the liquid sulfur storage facility;

[0067] ② After the sulfur production tail gas passes through the oxidation system, it is mixed with air and sent to the tail gas incineration system for incineration, and all sulfur-containing media are converted into SO 2 , forming SO 2 Flue gas, flue gas temperature 270°C, sulfur dioxide content 410mg / Nm 3 , and then enter the flue gas purification tower through recovered heat energy;

[0068] ③ Contains SO 2 The flue gas contacts with absorbent 2.5wt.% hydrogen peroxide solution in the flue gas purification tower, the SO in the flue gas 2 It is absorbed by the absorbent, and the recycled absorbent enters the bottom of the tower to remove SO 2 The puri...

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Abstract

The invention belongs to the technical field of sulfur recovery and tail gas treatment, in particular relates to an SWSR (Sunway Sulfur Recovery)-7 technology and an SWSR-7 device. The SWSR-7 technology comprises the following steps of (1) generating sulfur and sulfur-making tail gas through a sulfur-making combustion furnace and a Claus reaction system by an acid gas containing hydrogen sulfide, and recovering and feeding the sulfur into a liquid sulfur storage facility; (2) mixing the sulfur-making tail gas with air after enabling the sulfur-making tail gas to pass through or not pass through a tail gas hydrogenation reduction or oxidation system, feeding the mixed gas into a tail gas incineration system for being incinerated, converting all sulfur-containing media into SO2, forming SO2 flue gas, and then enabling heat energy to enter a flue gas purifying tower through recovery; (3) enabling SO2-containing flue gas to be in contact with an absorbent, i.e. hydrogen peroxide, in the flue gas purifying tower, absorbing the SO2 in the SO2-containing flue gas by the absorbent, circulating the absorbent, enabling the absorbent to enter the tower bottom, and feeding purified flue gas having no SO2 into a chimney for being discharged; (4) a system for preparing and conveying the absorbent. According to the SWSR-7 technology disclosed by the invention, the technological process is safe and reliable, and the content of the SO2 in discharged gas can be reduced to below 50 mg / Nm<3> and can meet the requirements regulated by the nation.

Description

technical field [0001] The invention belongs to the technical field of sulfur recovery and tail gas treatment, and specifically relates to a SWSR-7 sulfur recovery process and device. Background technique [0002] my country has been advocating energy conservation and emission reduction work, strictly controlling the emission of sulfur dioxide in the atmosphere. Before 2012, the emission concentration of sulfur dioxide stipulated by the national standard was no higher than 960mg / Nm 3 . At present, the relevant national departments are planning to revise the comprehensive emission standard of air pollutants, requiring the concentration of sulfur dioxide emission from newly built sulfur plants to be less than 400mg / Nm 3 (Specific area discharge concentration is less than 100mg / Nm 3 ). Sinopec actively implements the green and low-carbon development strategy, and regards the reduction of sulfur dioxide emission concentration in flue gas from sulfur plants as one of the impor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/04C01B17/74
CPCC01B17/0404C01B17/74Y02P20/10
Inventor 李宪华聂涛高炬
Owner SHANDONG SUNWAY PETROCHEMICAL ENGINEERING CO LTD
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