| Patent Number |
Title Of Patent |
Date Issued |
| 4234544 |
Liquid-liquid extraction apparatus |
November 18, 1980 |
| A relatively large volume horizontal liquid separation chamber is provided as an intermediate part of the downcomers used to transfer the denser liquid phase between contiguous trays of a countercurrent liquid-liquid extraction column. The downcomers also include two smaller vertical |
| 4207174 |
Liquid-liquid extraction apparatus and process |
June 10, 1980 |
| A relatively large volume horizontal liquid separation chamber is provided as an intermediate part of the downcomers used to transfer the denser liquid phase between contiguous trays of a countercurrent liquid-liquid extraction column. The downcomers also include two smaller vertical |
| 4104155 |
Mercaptan extraction process utilizing a stripped alkaline solution |
August 1, 1978 |
| Water is removed from an alkaline solution used to extract relatively high concentrations of mercaptans from a hydrocarbon stream by stripping the alkaline solution with a hydrocarbon vapor stream. The vapor stream is then admixed with the oxygen-containing off-gas stream of the process |
| 4081354 |
Liquid-liquid extraction process |
March 28, 1978 |
| High efficiency in liquid-liquid extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column by the provision of an intermediate product drawoff means located between a downstream sect |
| 4040947 |
Mercaptan extraction process utilizing a stripped alkaline solution |
August 9, 1977 |
| Water is removed from an alkaline solution used to extract relatively high concentrations of mercaptans from a hydrocarbon stream by stripping the alkaline solution with a hydrocarbon vapor stream. The vapor stream is then admixed with the oxygen-containing off-gas stream of the process |
| 4039389 |
Liquid-liquid extraction apparatus |
August 2, 1977 |
| High efficiency in extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column by the provision of an intermediate product drawoff means located between a downstream section of ext |
