2017-7-2 Purification Technology Edition Daily Question
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1. (Multiple-choice) To increase the cooling capacity of the liquid nitrogen washing process, one can use ( ). A. Increasing the amount of nitrogen used for washing B. Increasing the amount of crude nitrogen C. Increasing the amount of refined nitrogen 2. (Single-choice) The components of the exhaust gas after liquid nitrogen washing are ( ). A. N2, O2, H2S, CO2, CO B. N2, CO, AR, CH4 C. N2, CO2, CO, CH3OH D. N2, H2S, CO2, CO 1. AB 2. B Note: Answers to this question must be submitted within two days! ! !
1. (Multiple-choice question) To increase the cooling capacity of the liquid nitrogen washing process, the following methods can be used: (AB) A. Increase the amount of nitrogen used for washing; B. Increase the amount of crude nitrogen; C. Increase the amount of refined nitrogen. 2. (Single-choice question) The components of the exhaust gas after liquid nitrogen washing are (B): A. N2, O2, H2S, CO2, CO; B. N2, CO, AR, CH4; C. N2, CO2, CO, CH3OH; D. N2, H2S, CO2, CO
1. (Multiple-choice question) To increase the cooling capacity of the liquid nitrogen washing process, the following methods can be used: (AB) A. Increase the amount of nitrogen used for washing; B. Increase the amount of crude nitrogen; C. Increase the amount of refined nitrogen. 2. (Single-choice question) The components of the exhaust gas after liquid nitrogen washing are (B) A. N2, O2, H2S, CO2, CO; B. N2, CO, AR, CH4; C. N2, CO2, CO, CH3OH; D. N2, H2S, CO2, CO
AB,,,,,,,,,,,,B