Method for inhibiting generation of grease in alkaline tower
A technology of alkali washing tower and butter, which is applied in chemical instruments and methods, purification/separation of hydrocarbons, hydrocarbons, etc., and can solve problems such as poor inhibition effect of butter, easy blockage of alkali washing tower, inconvenient operation, etc.
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Embodiment 1
[0012] The inhibitor is applied to the caustic scrubber of the ETO unit, where the molar composition of the materials entering the caustic scrubber is: ethylene 49.1%, water 50.25%, acetaldehyde 0.05%, ether 0.01%, C 3 + W hydrocarbon 0.58%, CO 2 0.01%. The lye temperature of the caustic washing tower is 45℃, and the concentration of lye (NaOH) is 10%. The inhibitor diethylenetriamine is continuously injected into the lye circulation line using a piston pump, and the injection concentration is 85ppm. After 30 days of operation, there is no blockage. The tower phenomenon occurs. The test method of GB8978-1996 was used to test the COD value of lye in 759 mg / L. The results are shown in Table 1.
Embodiment 2~12
[0014] According to each step of [Example 1], only the added inhibitor and its concentration are different. The specific results are shown in Table 1.
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