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Optimization of Industrial Run of WSA Sulfuric Acid Plant

Author: ZengXianHua
Tutor: LiuYueJin
School: Xiangtan University
Course: Environmental Engineering
Keywords: WSA Sulfuric acid Industrial operation Optimization
CLC: TQ111.16
Type: Master's thesis
Year: 2008
Downloads: 90
Quote: 0
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Abstract


In the oil refining and gas production enterprises , the sulfur compounds in the chemical processing , conversion and refining process usually produce acidic gases that contain high concentrations of hydrogen sulfide . Hydrogen sulfide gas recycling , both environmental protection requirements , but also the needs of resource utilization . Recycling of hydrogen sulfide gas , which experienced a part of the combustion system with a Claus sulfur Law , dry or wet sulfuric acid process progress . The company Topsoe WSA wet sulfuric acid technology represents today's hydrogen sulfide recycle the most state-of-the-art technology . Subject to Sinopec Changling Branch WSA sulfuric acid plant industrial trial run of the the WSA device was operating analysis and optimization , and directly restricts started the pipe perforation proceed with the issue of product quality analysis and control optimization research . Through the WSA apparatus incinerator , a reactor and a condenser , draw incinerator optimal air distribution ratio is 10:1, preferably of the production load at 80% , the condenser inlet temperature of 290 to 295 ° C . Device processing power to achieve the basic design processing capacity and operating flexibility, finished sulfuric acid concentration stabilized at 98 % , directly 3.5MPa superheated steam energy recycling greatly improve compared with the Claus sulfur recovery device . The experimental analysis that the the main pipeline perforation sulfate sulfuric acid temperature is too high , pipe flow rate is too high , the pipe material, does not decay related . Plug fouling condensation by clearing filter plate sulfuric acid condensation temperature was lowered to below 40 ℃, increases the diameter φ45 to φ89 so that the flow rate reduced to less than 1.0m / s and using improved the piping material using Chenjiao tube , perforated pipe sulfate solved. The experimental results show that the finished product quality deteriorates sulfate and sulfuric acid the temperature is too high and the oxides of nitrogen content is too high , can be taken to reduce sulfate sulfuric temperature, while reducing the nitrogen oxide content to below 600ppm . Sulfuric acid pipeline perforation phenomenon improved after control optimization , the finished quality reaches sulfate requirements . Through the study of the problems exposed in the industrial process of trial operation , the preliminary optimization , and solutions used in the production practice, the better . In this study, both full use of sulfur resources and effective protection of the environment , and achieved good social and economic benefits .

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CLC: > Industrial Technology > Chemical Industry > Basic inorganic chemical industry > Inorganic acids production > Sulfuric Acid Industry > Production process and equipment
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