【Purification Daily Question】May 13, 2016
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To increase the popularity of the purified area, a \"One Question per Day\" campaign was launched to foster an active atmosphere for technical exchanges while also providing financial rewards to users. (Fellow sea lovers, if you have any good questions, feel free to send them to me; let’s work together.) 【Daily Question】 Is the hydrogen sulfide concentration tower operated under （） pressure? A. High B. Medium C. Low. Please reply with your answer in the comments; answering correctly earns you +2 wealth points. Those who get all answers right will receive an additional +3 to +8 wealth points. Those who provide a thorough analysis or explanation of the question and answers, or include detailed calculation processes, will receive extra wealth points as a reward. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer.
In the C low-hydrogen sulfide concentration tower, a stream of low-pressure nitrogen is introduced at the bottom of the tower as a stripping medium to reduce the partial pressure of CO2; under low temperature conditions, most of the CO2 is desorbed, thereby recovering the cold energy. During normal operation, the pressure in the hydrogen sulfide concentration tower is controlled at 0.07 MPa. If the pressure is too high, the load for desorption within the tower increases, resulting in a reduced amount of CO2 being desorbed there. This leads to significant losses of cooling capacity in the system, a decrease in the H2S concentration in the acidic gas, and increased steam consumption. Too low pressure shifts the desorption load in the hydrogen sulfide concentration tower upward, resulting in excessive H2S levels in the vent gases and environmental pollution.
Is the hydrogen sulfide concentration tower a (c) pressure tower?