SU1599068A1 - Liquid distributor in column - Google Patents

Abstract

The invention relates to the design of contact devices for gas (vapor) - liquid systems intended to evenly distribute the liquid over the cross section of packed columns with plates of the failed type during absorption, rectification, gas washing processes, and can be used in chemical, petrochemical, gas and other industries and allows to intensify the process of heat and mass transfer due to the additional dispersion and uniform distribution of fluid over the cross section of the column. The liquid distributor in the column contains a central pipe for supplying a liquid with a horizontal reflective disk under the bottom cut of the pipe, reflective cylinders axisymmetrically arranged around the central pipe with vertical rectangular windows and walls between them evenly arranged around the perimeter of the cylinders so that liquid flows through the windows for distribution over the cross section of the column outside this cylinder, and fluid is reflected from the walls for distribution inside the annular section between this cylinder and adjacent inner cylinder. The walls are made in the form of vertical squares with the tops outwards; in the shelves of the squares, the arched cuts are convex outward with axes directed from the tops of the squares and at an acute angle to the horizontal downward. 7 il.

Description

The invention relates to the design of contact devices for gas (vapor) - liquid systems intended to evenly distribute liquid over the cross section of packed columns and columns with plates of the failed type during absorption, rectification and gas clearing processes, and can be used in chemical, petrochemical, gas and other industrial areas

The purpose of the invention is to intensify the process of heat and mass transfer due to the additional dispersion and uniform distribution of the liquid over the cross section of the column.

Figo shows the proposed distributor; Fig. 2 shows a section A-A in Fig. E, a section B-B in Fig. 2; Fig, 4 - section BB in figoZ; on figo5 - section GG on

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figo4; Fig 6 - section DD on

5; figure 7 - section E-E in figure 5.

The distributor installed inside column 1 consists of cent. . a vertical vertical pipe 2 for supplying a liquid with a horizontal reflective disk 3 having a diameter i larger than the diameter of pipe 2 and standing at a distance from the bottom edge of pipe I 2 concentrically arranged around pipe 2 of reflective cylinders 4 with vertical windows 5, uniformly filled in the side walls of cylinders 4, and prost- es: between them in the form of equidistant corners 6, oriented vertices towards the direction of fluid flow in the distributor. The ratio of the width of the window 5 to the width of the pier in the corner of 6 the circumference of each reflective cylinder 4 is equal to the ratio of the annular area between the wall of the column and this cylinder 4 to the annular area between this cylinder 4 and the funny internal cylinder 4 o In the corner shelves 6, arched slots 7 are convex outward and with axes directed from vertices of corners b at an acute angle to the horizontal down. Arched slots 7 are located in the shelves of the corners 6 uniformly (in a checkerboard pattern). The upper edges of the windows 5 of the reflective cylinders 4 are located above the reflective disk 3, and the lower edges of the windows 5 of the reflective cylinders 4 are located below the reflective disk 3, and the height of the windows 5 of this reflective cylinder 4 must be greater than the height of the liquid falling along a parabolic trajectory of a meeting with this reflective cylinder 4. The reflective cylinders 4 are attached by radial bolts 8 to the central tube 2 o

The distributor works as follows

way

The liquid enters the central pipe 2 (Fig. 1 - Fig. 7), is distributed evenly between the reflective disk 3 and the lower edge of the pipe 2 and is directed by the action of inertia and gravity in the form of a paraboloid rotating from the center to the walls of the column 1 " Crossing on its way from the center to the periphery the first internal reflective system

lindr 4, the flow of liquid in the form of a paraboloid of rotation is partially reflected from the walls in the form of equidistant corners 6 with arched slots 7 of the internal reflective cylinder 4 and is distributed inside this cylinder 4, and the rest of the liquid flows through the windows 5 of the internal reflective cylinder 4 to the periphery, crosses the line of the next reflective cylinder 4, where it is reflected from the walls in the form of angles 6 and falls into the inter annular space between this cylinder 4 and the adjacent inner cylinder 4, where it is evenly distributed and the rest of the liquid, in the form of a partially interrupted paraboloid of rotation, passes through the windows 5 of this cylinder 4 to the next outer cylinder 4 and TODO, including the last outer cylinder 4 and the walls of the column 1 With J fluidizing from the center to the periphery in the form of a paraboloid of rotation with the walls reflective cylinders 4 in the form of equidistant corners 6 with arched slits 7, the liquid is partially reflected against the flow in the direction from the periphery to the center in the annular space between this reflective cylinder .. 4 Related inner cylinder 4 ,. resulting in a uniform distribution of fluid in the annular sections between the reflective cylinders 4 over the entire cross section of the column 1 The remainder of the liquid entering the arched slots 7 in the corners of the corners 6 passes through the arched slots 7 in the direction / at an acute angle in the horizontal so that does not interact with the flow of fluid passing through the windows 5 of this reflective cylinder 4, resulting in additional dispersion of the fluid passing through the arched slots 7, and uniformly th liquid distribution over the cross section of the column that provides heat and mass transfer intensification between the gas (steam) and liquid

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The technical advantages of the proposed distributor in comparison with the prototype consist in providing additional dispersion of the fluid flowing through the arched

The technical advantages of the proposed distributor in comparison with the prototype consist in providing additional dispersion of the fluid flowing through the arched

slots, and a more even distribution of the liquid over the cross section of the column, which contributes to a more complete contact between gas (vapor) and liquid and increases the efficiency of heat and mass transfer between gas (vapor) and liquid under conditions of absorption, desorption, rectification, washing of gases and other similar processes

F

The formula of the invention A liquid distributor in a column containing a central vertical pipe for supplying liquid with a horizontal reflective disk along the bottom cut of a pipe having a diameter larger than the diameter of the pipe and located at a distance from the lower edge of the pipe, placed around the central pipe concentrically mounted reflective cylinders with vertical windows and walls, evenly made in the side walls so that the ratio of the width, window to the width of the pier along the circumference of each cylinder is equal to the area of the annular cross-section between the interwall of the column and the outer wall.

99068

a continuous solid cylinder without windows and this reflective cylinder to the annular area between this reflective cylinder and the adjacent inner cylinder, while the upper edges of the windows of the reflective cylinders are located above the reflective disk of the central tube,

The lower and lower sections are below the reflective disk, the walls of the reflective cylinders are made in the form of vertical equally-sided corners, oriented with their vertices towards the direction of fluid motion in the distributor, and the width of the corners in the light is equal to the width of the walls of each reflective cylinder, in order to intensify

20 heat and mass transfer due to the additional dispersion and uniform distribution of the liquid over the cross section of the column, in the corner shelves the arched apertures are convex to the direction of fluid flow in the distributor, and the axes of the arch slots are directed from the tops of the angles and at an acute angle down to the horizontal

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FIG. 2

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FIG. 7

Claims (1)

The invention relates to structures. contact devices for gas (steam) systems - liquid intended for uniform distribution of liquid over the cross-section of packed columns and columns with plates of a failure type during the processes of absorption, rectification, gas flushing, can be used in chemical, petrochemical, gas and other industries and allows you to intensify the process of heat and mass transfer due to additional dispersion and The invention relates to the construction of contact devices for gas (steam) -'liquid systems designed for uniform distribution of liquid over the cross section of packed columns and columns with plates of a failure type during the processes of absorption, rectification and washing of gases, and can find application in chemical, petrochemical, gas and other industries on the measured distribution of liquid over the cross section of the column., The liquid distributor in the column contains a central pipe for supplying liquid from a horizontal * nym reflection plate under the lower cut pipe symmetrically arranged around the central tube baffle cylinders with vertical rectangular windows and piers therebetween ,; uniformly made around the perimeter of the cylinders so that liquid passes through the windows for distribution over the column section outside the given cylinder, and liquid is reflected from the piers for distribution inside the annular section between the given cylinder and the adjacent inner cylinder. The piers are made in the form of vertical squares with their peaks outward, in the shelves of the squares, arched slots are made with a convexity outward with axes directed from the vertices of the squares and at an acute angle to the horizontal down. 7 ill. The purpose of the invention is the intensification of the process of heat and mass transfer due to additional dispersion and uniform distribution of fluid over the cross section of the column.