CN2404572Y - Balancing type gasifying crude oil gas-liquid separator - Google Patents

Abstract

The utility model relates to a balancing type gasifying crude oil gas-liquid separator which is used for the normal-pressure process and the pressure-reducing process of the oil refining. The utility model is composed of a casing 1, a spacer plate 2, a vapor-phase outlet pipe 3, a liquid-phase outlet pipe 4, a reinforcing plate 5, a vent pipe 6, a guide pipe 7, a bending head pre-reinforcement 8 and a bearing flange 9 of the guide pipe. The utility model has the advantages of novel design and reliable work. By making use of the utility model, an entrainment phenomenon can be efficiently prevented during the normal-pressure process and the pressure-reducing process of the oil refining; thus, a bad result which is caused by the entrainment phenomenon is avoided. The utility model does not needed to be provided with a foam-breaking net, so the minor pressure drop can be maintained in a tower; thereby, various defects which are caused by the carbon deposition of the foam-breaking net can be thoroughly eliminated. When the utility model is adopted, the quality of an oil refining product of normal pressure and reduced pressure can be improved, and the long-period production of a producing apparatus can be provided with the prerequisite condition.

Description

Equilibrium evaporation crude oil vapour liquid separator

The utility model relates to and a kind ofly is used for that petroleum refining is normal, the device of decompression technology.

In, the decompression technology normal in petroleum refining, " entrainment " phenomenon is that the technological design personnel make great efforts the problem of managing to avoid always.At present, usually the solution that adopts is at the vaporization section top demister to be set, utilize demister with the foam fragmentation that forms in the crude flashing process, make it to form drop, and the entrained carbon residue of mist surface tension is dropped on the net, at the bottom of dropping onto tower with drop, thereby the steam flow of avoiding to a great extent rising is carried to rectifying section with carbon residue.But, because existing process units lacks suitable washing means demister is carried out suitable washing, As time goes on, carbon residue gathers on demister, cause at the bottom of the tower and produce sizable pressure drop between the rectifying section, make tower at the bottom of system pressure increase, be unfavorable for volatilization, atmospheric tower efficient reduces, and the light oil yield of normal pressure part reduces.Simultaneously, containing at the bottom of the normal pressure Tata of more light component oil transfers to vacuum tower and then can increase the vacuum tower load.Bigger for its harm of lubricating oil type decompressor, make the fraction width of sideline product increase, it is up to standard that indexs such as the sticking temperature of lubricating oil compares are difficult to, thereby fundamentally reduced the use value of lubricating oil basestocks.If shut-down (breakdown) mainteance then not only needs suitable expense, and influences ordinary production.

The equilibrium evaporation crude oil vapour liquid separator of " entrainment " phenomenon that the purpose of this utility model is to provide a kind of can solve effectively that petroleum refining is normal, take place in the decompression technology and the adverse consequences problem of generation thereof.

The utility model is to realize like this.This kind equilibrium evaporation crude oil vapour liquid separator takes up flange, guide pipe, the pre-reinforcement of elbow, dividing plate, vapor phase exit pipe, liquid phase outlet, stiffening plate and blow-down pipe by housing, guide pipe and forms, its structure, assembling feature are as follows: upper lateral part is provided with and changes the guide pipe that oil pipeline is connected and take up flange before the housing, rear side middle part and bottom are welded with vapor phase exit pipe and liquid phase outlet respectively, wherein one section of housing is stretched in vapor phase exit pipe the inner, two mouths of pipe are respectively equipped with stiffening plate, and the bottom is provided with blow-down pipe; The middle part is provided with upper and lower all longitudinal baffle of end socket not in the face of guide pipe takes up flange in the housing, the enclosure interior space segmentation is become upper and lower former and later two chambers that communicate respectively, weld mutually with inner walls the dividing plate both sides, dividing plate the place ahead is provided with the outer end changes outward with housing that oil pipeline is connected with flange and take up the band elbow guide pipe that flange welds mutually with guide pipe, and the elbow outside is welded with the pre-reinforcement of elbow.This device often is installed in, on the vacuum tower feeding platform, during work, enter this separator ante-chamber by the equilibrium evaporation crude oil that changes oil pipeline through guide pipe and carry out flash distillation, its liquid that is not vaporized is liquid level with the liquid phase outlet, the lower passage that separator is connected is originally carried out fluid-tight, and the liquid that is higher than the liquid phase outlet then exports into tower by liquid phase.Because this separator lower passage is by fluid-tight, the vapor phase channel that the vapour phase medium after the flash separation can only be down " U " font from the equipment top passes through.Very fast because of vapor phase movement speed, the foam that its centrifugal force generates when making the flash distillation of carrying secretly in the vapour phase flows into liquid phase along the shell separator inwall, because the vapor phase exit pipe stretches into interior one section of housing, thereby has avoided wall stream to carry effectively.

The utility model modern design, reliable operation, utilize it can be normal in petroleum refining, prevent " entrainment " phenomenon effectively in the decompression technology, solve therefore and the adverse consequences problem that produces.Adopt this device can demister be set again, make to keep less pressure drop in the tower, thereby thoroughly eliminate all drawbacks that cause because of the demister carbon deposit.Because this separator is installed on the tower feed zone platform, equilibrium evaporation flash vaporization of crude oil process is carried out before going into the tower prerequisite, helps carrying out normal, the decompression oil refining process, product quality is improved a lot, and create precondition for the production of process units long period.

Fig. 1 is a general structure schematic diagram of the present utility model.

Fig. 2 is the vertical view of this device.

Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.

As shown in the figure, the utility model takes up flange 9 by housing 1, dividing plate 2, vapor phase exit pipe 3, liquid phase outlet 4, stiffening plate 5, blow-down pipe 6, guide pipe 7, elbow reinforcement 8 and guide pipe and forms.Wherein, housing 1 is a cylindrical vertical vessel identical with king-tower design pressure grade, its preceding upper lateral part is provided with to have with guide pipe and takes up the match circular hole of flange of flange, in the rear side, the bottom is respectively equipped with the circular hole of the vapor phase exit pipe that is welded, liquid phase outlet, the end, top, be ellipsoidal head, and the bottom is provided with the circular hole of welding blow-down pipe.

Claims (1)

1, a kind of equilibrium evaporation crude oil vapour liquid separator, form by housing (1), vapor phase exit pipe (3), liquid phase outlet (4), blow-down pipe (6), it is characterized in that, the preceding upper lateral part of housing (1) is provided with guide pipe and takes up flange (9), rear side middle part and bottom are welded with vapor phase exit pipe (3) and liquid phase outlet (4) respectively, wherein interior one section of housing (1) is overed in vapor phase exit pipe (3) the inner, and two mouths of pipe are welded with stiffening plate (5) respectively, and the bottom is provided with blow-down pipe (6); The middle part is provided with upper and lower all longitudinal baffle of end socket (2) not in the face of guide pipe takes up flange (9) in the housing (1), the enclosure interior space segmentation is become upper and lower former and later two chambers that communicate respectively, weld mutually with housing (1) inwall dividing plate (2) both sides, dividing plate (2) the place ahead, top is provided with the guide pipe (7) of a band elbow, guide pipe (7) outer end takes up flange (9) with guide pipe and welds mutually, and the elbow outside is welded with the pre-reinforcement of elbow (8).