The new technology of two-stage extraction was adopted in technical revamping of lube-stock furfuralrefining unit in the refinery of Shanghai Gaoqiao Petrochendcal Company.
Undergoing internal driving disc,external driving disc,short distance ladder ring packing,QH-1 flat ring packing and two-stage extraction,the extractive efficiency are continuously improving in lube oil furfural refining unit in Shanghai Refinery.
It is difficult to improve the extractive efficiency of single column due to the column’s height. So,two-stage extraction of double column is effective way for improving the efficiency of extraction column.
Now the development of the two-stage extraction technology,the use of the new packing technology,the design of inlet distributer are widely used inside and outside China. The application of the double solvents will replace other extracting solvents in the future because of little investment and good refining effect.
Two-stage extraction preconcentration and HPLC determination of phenol and 1-naphthol in aqueous solutions
All blocks with individual background intensity values in a document image are first extracted using a two-stage extraction procedure.
After two-stage extraction separation, chemical yield of 90Y in the final aqueous phase was roughly 80%, while 90Sr radionuclide impurity in this phase containing carrier-free 90Y was 10-6%.
A two-stage extraction process for regenerating zinc from wash water in the manufacture of viscose fibres has been worked out on a pilot set-up.
Determination of Solute-Polymer Interaction Properties via Two-Stage Extraction
The new technology of two-stage extraction was adopted in technical revamping of lube-stock furfuralrefining unit in the refinery of Shanghai Gaoqiao Petrochendcal Company. Before revamping, detailed calculations,including material balance, liquid flooding velocity in extractor, blowing out velocity in liquid distributor andextractor pressure drop were separately catried out for the two-stage extraction. The product quality has beenupgraded and the processing capacity increased by one percentage point since...
The new technology of two-stage extraction was adopted in technical revamping of lube-stock furfuralrefining unit in the refinery of Shanghai Gaoqiao Petrochendcal Company. Before revamping, detailed calculations,including material balance, liquid flooding velocity in extractor, blowing out velocity in liquid distributor andextractor pressure drop were separately catried out for the two-stage extraction. The product quality has beenupgraded and the processing capacity increased by one percentage point since startup.
The new extraction process of two stages for lubricant and furfural refining was analyzed in this paper. On the basis of design calculation, the equilibrium of the contents in two stages extraction, the velocity of the liquid in the extraction column, the spray velocity of the content from the distributor and pressure loss of the column were discussed also in the paper.
Undergoing internal driving disc,external driving disc,short distance ladder ring packing,QH-1 flat ring packing and two-stage extraction,the extractive efficiency are continuously improving in lube oil furfural refining unit in Shanghai Refinery. Through discussion of how to improve the extractive efficiency,pointed that whether the rotary disc is turning or not has no effect on extractive efficiency.It is trend of lube oil furfural refining extraction tower to replace rotary disc column by packed column along...
Undergoing internal driving disc,external driving disc,short distance ladder ring packing,QH-1 flat ring packing and two-stage extraction,the extractive efficiency are continuously improving in lube oil furfural refining unit in Shanghai Refinery. Through discussion of how to improve the extractive efficiency,pointed that whether the rotary disc is turning or not has no effect on extractive efficiency.It is trend of lube oil furfural refining extraction tower to replace rotary disc column by packed column along with the development of new type high effective packing material.It is difficult to improve the extractive efficiency of single column due to the column’s height.So,two-stage extraction of double column is effective way for improving the efficiency of extraction column.
二段萃取
two-stage extraction
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