One question per day: Coal-to-oil and olefins forum, 2017.12.11
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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 injecting water at the outlet of the reaction gas compressor in the (DMTO) olefin separation unit? static/image/hrline/2.gif To keep the temperature at the compressor outlet below 90 degrees, thereby reducing the risk of polymerization and scaling inside the compressor. static/image/hrline/2.gif Note: The answer will be released automatically after two days
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.
Is it to reduce the temperature between compressor stages and improve compressor efficiency? Right? Learn* more
Water injection into the pipeline: Due to the complex composition of the pyrolysis gas, which contains heavy unsaturated hydrocarbons such as butadiene, compression increases the pressure and temperature of this gas. As a result, these heavy dienes can polymerize, and the resulting polymers or tar deposit on the diffusers and blades of the centrifugal compressors, thereby severely disrupting normal operation and reducing compression efficiency. Therefore, a certain amount of atomized water is sprayed at the inlet of each section of the compressor, in such a quantity that it is sufficient to moisten the compressor channels, thereby preventing the deposition of polymers and tar. The polymerization rate of dienes is related to temperature; the higher the temperature, the faster the polymerization rate. Due to the occurrence of polymerization, the discharge temperature at each section must not exceed 90°C. By using medium-pressure deoxygenated water and directly injecting it into the first three stages of the casing of the pyrolysis gas compressor C3101, not only is the formation of polymers and scaling inside the impellers and diffusers prevented, but the suction temperature is also significantly reduced, thereby lowering the power consumption of the compressor. backflash ； The hydrocarbon and water vapor condensates in the suction tank of Stage III and the discharge tank of Stage III of the pyrolysis gas compressor C401 are sequentially flashed into the suction tank of the previous stage, thereby reducing the suction temperature of the pyrolysis gas in that previous stage
A high compressor outlet temperature can be reduced by adding water, which helps to lower the compressor’s power consumption and prevents polymers from forming and depositing on the compressor’s diffuser and blades.
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.
Ensure that the compressor outlet temperature remains below 90 degrees, thereby reducing the likelihood of polymerization and scaling inside the machine.