Absorption-stabilization technology and system for refining
An absorption stabilization system and stable technology, applied in the petroleum industry, gas mixture processing, hydrocarbon oil treatment, etc., can solve the problems of increasing the internal circulation of gasoline, the absorption of diesel oil can not be too large, and economic losses.
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Embodiment 1
[0054] Taking the absorption stabilization system of a domestic 1 million tons / year FCC catalytic cracking unit as an example, the ASPEN PLUS process simulation software is used to simulate the process of the present invention, and catalytic diesel is used as the absorbent. The key process parameters are as follows: the outlet of the rich gas compressor The pressure is 1.4 Mpa, the operating temperature of the desorption gas balance tank is 40 ℃, the absorption tower bottom liquid entering the desorption gas balance tank accounts for 40wt% of the total liquid phase output at the bottom of the absorption tower, the operating temperature of the rich gas balance tank is 40 ℃, and the rich gas Equilibrium tank liquid phase heat exchange to 80 ℃ enters the dividing wall tower, the absorption tower is equipped with an intercooler, the return tower temperature is 35 ℃, and the amount of fresh catalytic diesel oil is 30 t / h (initial boiling point 180 ℃, final boiling point 360 ℃) , the...
Embodiment 2
[0056] Same as Example 1, the difference is that a mixture of 1-butyl-3-methylimidazolium hexafluoroborate and sodium acetate (wherein sodium acetate is 5wt%) is used as the absorbent, and the process parameters are as follows: rich gas compression The outlet pressure of the machine is 1.4 Mpa, the operating temperature of the desorption gas balance tank is 40°C, the absorption tower bottom liquid entering the desorption gas balance tank accounts for 40wt% of the total liquid phase output at the bottom of the absorption tower, and the operating temperature of the rich gas balance tank is 40°C. The rich gas balance tank is liquid-phase heat exchanged to 80°C and enters the desorption tower. The absorption tower is equipped with an intercooler. The return temperature of the tower is 35°C, the internal circulation of the absorbent is 40 t / h, the vacuum degree of the regeneration tank is 15 Kpa, and the dry gas output is 5 t / h, the output of liquefied gas is 29 t / h, and the output...
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