Extraction of Phenol from Ammonia Liquor, Using a Packed Column for Pulsation Flow
1958 Volume 22 Issue 2 Pages 97-101
Details
1958 Volume 22 Issue 2 Pages 97-101
Studies were made on the characteristic operation of an extraction column for pulsation flow, by extracting phenol with benzene from ammonia liquor, a byproduct obtained from the processing of coal into coke. The extraction column with an inside diameter of 8.0cm and a 1-2m packed height was filled with 1 inch saddle packing and 1/2-1 inch crushed coke. The operating condition was as follows:
Frequency of pulsation: 100, 150, 200 (c.p.m.)
Linear amplitude of pulsation in the column:1.5, 3.0, 4.5×10-3(m)
The results obtained may be summarized like the following:
(1) Overall capacity factor increased with the pulsation intensity in a region where (amff2)< 2×105[m/hrhr2], and at the optimum pulsation condition, the fractional increment of overall capacity factor of the pulsation condition to overall capacity factor of the steady condition was about 10.
In this region, the fractional increment of (KRa)p to (KRa)s was approximately expressed by:
(KRa)p/(KRa)s=c(amff2)n
where c=1.3×10-3-3.0×10-3 & n=0.6-0.65
(2) When the column height was in the vicinity of 0.8-2m, the effect of column height on (H.T.U.)OR was negligibly small, and the value of (H.T.U.)OR obtained from the experimentaldata was applicable to a large scale equipment, as well.
(3) Under the same flow and pulsation conditions, (H.T.U.)OR increased with the increment of fractional voidage of packing.
(4) Calculation of the flow condition at the flooding point was made possible by employing an approximate equation obtained from the experimental data.
