The specific function of gaseous hydrocarbons entering the anti-flying line to the overhead cooler
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The specific function of the gaseous hydrocarbons entering the counter-flying line to the overhead cooler is to reabsorb the propylene component in the gaseous hydrocarbons. is that so? Is the effect significant? I feel like not much has changed. The propylene component of gaseous hydrocarbons is still very high, accounting for about 60%. Let's hear everyone's opinions.
No, but the anti-flight line is set up to ensure the safety of the crew and it is best not to be used for other purposes.
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The question you asked is not clearly stated. Different devices have different anti-flight functions. The anti-flight functions of catalytic devices and coking devices are mainly used to control pressure. Generally, the one at the compressor is like one inverting to one, and the two inverting in one can adjust the temperature, flow rate, etc. of the machine!
Cool down, increase gas density, and reduce energy consumption of air compressors
When gaseous hydrocarbons enter the anti-flying line, on the one hand, the flow rate at the inlet of the air compressor is increased to reduce the amount of anti-flying gas; on the other hand, after cooling and compression, they enter the absorption and stabilization process and then absorb components such as propylene. However, the effect is not necessarily good.
The compressed rich gas enters the anti-flying line. On the one hand, it increases the inlet flow of the air compressor to prevent the air compressor from anti-flying; on the other hand, it increases the operating pressure of the front device.
Anti-flight ensures the safety of the compressor
The question you asked is not clear. Two-return and one-return air cooling are used to reduce the temperature. Reverse flying is to ensure the safety of the compressor.
Gaseous hydrocarbons enter the anti-flying line, which is an operation performed to ensure that the air compressor avoids "surge" when the device load is low or the air compressor processing capacity is large. However, the propylene content in the gas is high, which is mainly a rear operation problem and the absorption effect is poor. Our RFCC device uses non-condensable gas to the anti-flight line (when the temperature is high) or oil and gas separator to further recover light hydrocarbons. The current C3 content is not more than 1%.
In our device, the large oil and gas pipeline at the split top enters the air compressor before entering air cooling. On the one hand, it is to prevent surge, and on the other hand, it is to increase the pressure at the inlet of the air compressor. Our current pressure drop from the settler to the inlet of the air compressor is 68kPa.
The main purpose is to lower the gas temperature. High-temperature gas has high viscosity and is difficult to compress.
We have a margin of compression capacity, which is now used to control the reaction pressure. It is easy to use and the operation is very smooth.