RU2008110245A

RU2008110245A - OIL RENTING METHOD

Info

Publication number: RU2008110245A
Application number: RU2008110245/04A
Authority: RU
Inventors: Рустям Исламович Насибуллин (RU); Рустям Исламович Насибуллин
Priority date: 2008-03-17
Filing date: 2008-03-17
Publication date: 2009-09-27
Also published as: RU2394064C2

Abstract

1. Способ перегонки нефти в сложной ректификационной колоне, включающий подачу нагретой в печи нефти в секцию питания основной колонны, подачу перегретого водяного пара в низ основной колонны и в низ отпарных колонн, отбор кубового остатка, отбор паров дистиллята из верха колонны, совместную конденсацию паров нефтепродуктов и паров воды с последующим отдалением сточных вод, острое и промежуточные циркуляционные орошения, отбор жидкости в отпарные колонны, отбор фракций нефтепродуктов из нижней части отпарных колонн, возврат паров из верхней части отпарных колонн в основную колонну, отличающийся тем, что в отпарных колоннах создают дополнительный паровой поток с помощью пленочных испарителей, в межтрубное пространство которых в качестве теплоносителя подают пары с нижележащих тарелок основной колонны, конденсат возвращают на тарелку отбора паров, не сконденсировавшуюся часть паров подают на вышележащую тарелку, а в пленочный испаритель подают водяной пар в количестве, обеспечивающем требуемую производительность пленочного испарителя. ! 2. Способ перегонки нефти по п.1, отличающийся тем, что для регулирования производительности пленочного испарителя используют изменение расхода конденсата из межтрубного пространства испарителя. ! 3. Способ перегонки нефти по п.2, отличающийся тем, что регулирование расхода водяного пара в пленочный испаритель производят в зависимости от уровня конденсата в межтрубном пространстве пленочного испарителя. ! 4. Способ перегонки нефти по п.1, или 2, или 3, отличающийся тем, что для создания парового потока в нижней или нескольких нижних отпарных колоннах в качестве теплоносите�1. The method of distillation of oil in a complex distillation column, including the supply of oil heated in the furnace to the feed section of the main column, the supply of superheated water vapor to the bottom of the main column and to the bottom of the stripping columns, selection of bottoms, selection of distillate vapors from the top of the column, joint vapor condensation oil products and water vapors with subsequent removal of wastewater, acute and intermediate circulating irrigation, liquid selection in stripping columns, selection of oil fractions from the lower part of stripping columns, return of vapors from parts of stripping columns to the main column, characterized in that in the stripping columns an additional steam stream is created using film evaporators, in the annular space of which vapor from the underlying plates of the main column is supplied as a coolant, the condensate is returned to the vapor selection plate, the non-condensing part of the vapor served on an overlying plate, and in the film evaporator serves steam in an amount that provides the required performance of the film evaporator. ! 2. The method of oil distillation according to claim 1, characterized in that to control the performance of the film evaporator using a change in the flow of condensate from the annulus of the evaporator. ! 3. The method of oil distillation according to claim 2, characterized in that the regulation of the flow of water vapor into the film evaporator is carried out depending on the level of condensate in the annulus of the film evaporator. ! 4. The method of oil distillation according to claim 1, or 2, or 3, characterized in that to create a steam stream in the lower or several lower stripping columns as a heat transfer

Claims

1. The method of distillation of oil in a complex distillation column, including the supply of oil heated in the furnace to the feed section of the main column, the supply of superheated water vapor to the bottom of the main column and to the bottom of the stripping columns, selection of bottoms, selection of distillate vapors from the top of the column, joint vapor condensation oil products and water vapors with subsequent removal of wastewater, acute and intermediate circulating irrigation, liquid selection in stripping columns, selection of oil fractions from the lower part of stripping columns, return of vapors from parts of stripping columns to the main column, characterized in that in the stripping columns an additional steam stream is created using film evaporators, in the annular space of which vapor from the underlying plates of the main column is supplied as a coolant, the condensate is returned to the vapor selection plate, the non-condensing part of the vapor served on an overlying plate, and in the film evaporator serves steam in an amount that provides the required performance of the film evaporator.

2. The method of oil distillation according to claim 1, characterized in that to control the performance of the film evaporator using a change in the flow of condensate from the annulus of the evaporator.

3. The method of oil distillation according to claim 2, characterized in that the regulation of the flow of water vapor into the film evaporator is carried out depending on the level of condensate in the annulus of the film evaporator.

4. The method of oil distillation according to claim 1, or 2, or 3, characterized in that to create a vapor stream in the lower or several lower stripping columns, oil product pairs obtained in a gas separator, into which part of the heated in an oil furnace, condensate from film evaporators is returned to the main column, or to the gas separator, or to the furnace inlet, the oil product from the gas separator is fed to the power section of the main column or returned to the furnace inlet.