Column for thermal treatment of a mixture of compounds having a tendency to polymerization
AssigneeBASF SE
InventorsUlrich Hammon, Lukas Schulz
Life of this patent
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Abstract
The present invention related to a column for the thermal treatment of a mixture of compounds having a tendency to polymerization, as well as a thermal separating process using the column. The column includes a mass transfer tray having a rising tube with an inlet opening below the tray and an outlet opening above the tray. The rising tube further includes a lateral opening above and close to the upper surface of the mass transfer tray. The rising tube forms a fountain spray of atomized liquid from the mixture of compounds above the tray that enter the rising tube through the lateral opening. The fountain is sprayed to a spot of the inner surface of the column where polymerization is likely to occur.
Claims15
A column for a thermal treatment of a mixture of compounds having a tendency to polymerization, wherein the column comprises
- a cylindrical, vertical column body which forms a column cavity,
- at least one mass transfer tray which is disposed in the column cavity and comprises passage orifices, and at least one opening which is surrounded by a rim of the mass transfer tray,
- wherein
- the mass transfer tray comprises at least one rising tube which is connected to the rim of the mass transfer tray in a gas-tight manner and which comprises
- an inlet opening which is located at or below the at least one mass transfer tray, and
- an outlet opening which is located above the at least one mass transfer tray, and
- at least one lateral opening which is located above the mass transfer tray in a vertical direction close to an upper surface of the mass transfer tray, said rising tube is adapted to form a fountain by atomization of a liquid fraction of the mixture of compounds from the mass transfer tray that enters through at least one lateral opening into the rising tube by a rise of a gas phase of the mixture of compounds flowing from the inlet opening through the rising tube to the outlet opening where the fountain is sprayed into a part of the column located above the mass transfer tray to a spot of the inner surface of the column where polymerization is likely to occur, wherein a pressure difference of trays is exploited as driving force for the spray generation.
A column for a thermal treatment of a mixture of compounds having a tendency to polymerization, wherein the column comprises
- a cylindrical, vertical column body which forms a column cavity,
- a mass transfer tray which is disposed in the column cavity and comprises passage orifices, and
- at least one opening which is surrounded by a rim of the mass transfer tray,
- at least one further lower mass transfer tray, wherein the further lower mass transfer tray is located below the mass transfer tray,
- wherein
- the mass transfer tray comprises at least one rising tube which is connected to the rim of
- the mass transfer tray in a gas-tight manner and which comprises
- an inlet opening which is located at or below the mass transfer tray, and
- an outlet opening which is located above the mass transfer tray,
- said rising tube is adapted to form a fountain atomization of a liquid fraction of the mixture of compounds from the further lower mass transfer tray by a rise of a gas phase of the mixture of compounds flowing from the inlet opening through the rising tube to the outlet opening where the fountain is sprayed into a part of the column located above the mass transfer tray, wherein a pressure difference of trays is exploited as driving force for the spray generation, and wherein
- the column cavity is formed so that there is a straight path from the outlet opening of the rising tube to a spot of the inner surface of the column where polymerization is likely to occur for directly spraying of the spot by the fountain.
Dependencies are inferred from the claim text.