Sulfur Recovery Daily Question 2018.11.17
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What are the requirements for the acidic gas used to pre-sulfurize the cobalt/molybdenum catalysts in the exhaust gas purification section? What about using Claus off-gases? Answer: When pre-sulfurizing the cobalt/molybdenum catalysts in the exhaust gas purification unit, if acidic gas is used for this purpose, the NH3 content in the acidic gas must be less than 5V%, and the heavy hydrocarbon content must be less than 1V%. If Claus exhaust gas is used for pre-sulfurization, the H2S/SO2 ratio in the exhaust gas should be between 5 and 8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-sulfurizing the cobalt/molybdenum catalysts in the exhaust gas purification section, if acidic gas is used for this purpose, the NH3 content in the acidic gas must be less than 5 V%, and the heavy hydrocarbon content must be less than 1 V%. If Claus exhaust gas is used for pre-sulfurization, the H2S/SO2 ratio in the exhaust gas should be between 5 and 8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-vulcanizing with acidic gas, it is required that the NH3 content in the acidic gas be less than 5% (V), and the heavy hydrocarbon content be less than 1% (W). When using Claus off-gas for pre-vulcanization, the H2S/SO2 ratio in the off-gas should be controlled at 5–8.
When pre-sulfurizing the cobalt/molybdenum catalysts in the exhaust gas purification section, if acidic gas is used for this purpose, the NH3 content in the acidic gas must be less than 5 V%, and the heavy hydrocarbon content must be less than 1 V%. If Claus exhaust gas is used for pre-sulfurization, the H2S/SO2 ratio in the exhaust gas should be between 5 and 8.