(Daily Question) Coal-to-oil and olefins forum, 2018.2.3
Thread Content
3.jpg Participation: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: In the (DMTO) olefin separation unit, what is the function of the ejector pump in the propylene refrigeration compressor (evaporative condensing type)? The function of the starting jet pump is to quickly remove the large amount of air present in the turbine and the condenser before the turbine starts up, thereby accelerating the establishment of a vacuum in the condenser and reducing the startup time of the unit. The advantages of the starting jet pump are fast startup, large pumping capacity, simple structure (no cooler), easy operation, and rapid vacuum establishment. Its disadvantages are a low vacuum level, the inability to recover the heat from the working steam and the condensate in the mixture, and high heat losses. Note: The answer will be announced automatically in two days!
The function of the ejector pump is to maintain the vacuum level in the condenser, and during the operation of the turbine system, it continuously removes air and non-condensable gases from the condensation equipment.
Quickly draw out a large amount of air to bring the turbine vacuum to the desired level.
Create a negative pressure in the rehydrator to establish a vacuum, thereby creating the conditions for starting the turbine
The function of the ejector pump is to maintain the vacuum level in the condenser, and during the operation of the turbine system, it continuously removes air and non-condensable gases from the condensation equipment.
Answer: The function of a jet pump is to maintain the vacuum level in the condenser; during the operation of the turbine system, it continuously removes air and non-condensable gases from the condensing equipment.
To verify the amount of air leakage
The function of the jet pump is to maintain the vacuum level in the condenser; during the operation of the turbine system, it continuously removes air and non-condensable gases from the condensing equipment
The function of the ejector pump is to maintain the vacuum level in the condenser, and during the operation of the turbine system, it continuously removes air and non-condensable gases from the condensation equipment.
Answer: The function of the starting jet pump is to quickly remove the large amount of air present in the turbine and the condenser before the turbine starts up, thereby accelerating the establishment of a vacuum in the condenser and shortening the startup time of the unit. The advantages of the starting jet pump are fast startup, large pumping capacity, simple structure (no cooler), easy operation, and rapid vacuum establishment. Its disadvantages are a low vacuum level, the inability to recover the heat from the working steam and the condensate in the mixture, and high heat losses.