(Daily Question) Coal-to-oil and olefins forum, 2018.1.20
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3.jpg Participation: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: What is the purpose of pre-cooling the feed to the demethanizer in an (DMTO) olefin separation unit? The purpose of feed pre-cooling is to use propylene as a coolant to gradually cool the reaction gas to -37 degrees. In the gas-liquid separation tank, the gas phase rich in nitrogen and methane is separated from the liquid phase rich in hydrogen and methane. The gas phase and the condensate serve as the two feed streams for the demethanization tower, entering the tower at appropriate positions in order to reduce the operating load of the demethanization tower! Note: The answers will be announced automatically in two days!
Pre-cooling involves using a cold box to treat the feed to the demethanization tower; the hydrogen produced as a result is of high purity, exceeding 90%
Pre-cooling involves using a cold box to treat the feed to the demethanization tower; the hydrogen produced as a result has a high purity, of over 90%.
Remove a portion of the methane and most of the hydrogen
Pre-cooling involves using a cold box to treat the feed to the demethanization tower; the hydrogen produced as a result has a high purity, of over 90%.
Pre-cooling involves using a cold box to treat the feed to the demethanization tower; the hydrogen produced as a result has a high purity, of over 90%.
Pre-cooling involves using a cold box to treat the feed to the demethanization tower; the hydrogen produced as a result is of high purity, exceeding 90%
Answer: The purpose of pre-cooling the feed is to use propylene as a coolant to gradually cool the reaction gas to -37 degrees. In the gas-liquid separation tank, the gas phase rich in nitrogen and methane is separated from the liquid phase rich in hydrogen and methane. The gas phase and the liquid condensate serve as the two feeds for the demethanization tower, entering the tower at appropriate positions so as to reduce the operating load on the demethanization tower
The purpose of feed pre-cooling is to use propylene as a coolant to gradually cool the reaction gas to -37 degrees. In the gas-liquid separation tank, nitrogen, a gas phase with a high methane content, and hydrogen, a liquid phase with a low methane content, are separated. The gas phase and the condensate serve as the two feed streams for the demethanization tower, entering the tower at appropriate positions in order to reduce the operating load on the demethanization tower
The purpose of feed pre-cooling is to use propylene as a coolant to gradually cool the reaction gas to -37 degrees. In the gas-liquid separation tank, nitrogen, a gas phase with a high methane content, and hydrogen, a liquid phase with a low methane content, are separated. The gas phase and the condensate serve as the two feed streams for the demethanization tower, entering the tower at appropriate positions in order to reduce the operating load on the demethanization tower
It also removes a portion of the methane and most of the hydrogen, thereby reducing the load on the demethanization tower.