SU925362A2 - Horisontal mass exchange column - Google Patents

Description

(54) HORIZONTAL MASS-EXCHANGE COLUMN

one

The invention relates to horizontal type apparatuses for contacting gas-liquid systems and can be applied for carrying out processes of distillation, absorption, etc.

A known horizontal mass exchange column for countercurrent contacting of gas and liquid, comprising a body partitioned by a series of successively installed upper and lower transverse partitions.

Between . The plates are arranged with plates with ends bent in the direction of fluid flow, forming nozzles with profiled partitions and cavities interconnected by a tray for the flow of fluid 1.

In sections similarly connected, the level of the liquid depends on the pressure above the liquid. A drop in gas pressure along the course of the column causes the column to overflow with liquid in subsequent sections.

By bus. St. No. 593705 known horizontal column comprising a body partitioned by upper and lower transverse partitions arranged in series along the gas flow, installed with overlapping edges to form a hydraulic lock, bubbling device between the partitions, made in the form of a series of parallel gas supply tubes, lowered by ends into a liquid, gas line these collectors.

In this column, the gas flow, the outlet from the tubes of the bubbling device, moves across the liquid flow, the gas-liquid mixture is poured from the bubbling section into the settling unit by increasing

10 it is in volume, and the overflow from the settling section to the bubbling occurs due to the difference in the density of the liquid.

The disadvantage of this construction of the column is the limited consumption of

15, since the gas-liquid mixture from section to section moves by gravity. The aim of the invention is to increase the liquid throughput of the column due to the forced flow of liquid from the bubbling section to the settling tank.

This is achieved by the fact that the outlet openings of the bubbling device are located along the motion of the fluid.

25 It is advisable to supply the column with a mesh cap located between the vertical partitions.

FIG. 1 shows a column, a longitudinal section; in fig. 2 - section AA

30 of FIG. one; in fig. 3 shows a section BB in FIG. 2

The column contains a horizontal body 1, divided by the upper 2 and lower 3 drain partitions, forming a series of bubble 4 and settling sections 5.

In the bubbling section, a pipe 6 is installed with gas outlet openings 7 oriented to the irelaive zone 8 in the course of the fluid movement. The edges of the partitions 2 and 3 overlap, forming a water seal. The pipe 6 by the bubbling section 4 is connected by a collector 9 to the gas outlet 10 of the previous settling section along the gas flow. Between the vertical partitions 2 there is a net nozzle 11, and at the gas outlet to the next bubble section there is a separating device 12.

The column works as follows.

The gas flow enters the pipe b and exits through the openings 7, oriented to the liquid overflow zone 8, to the bubbling section 4 filled with liquid to the upper edge of the overflow partition 3. The gas exiting the holes 7 captures the liquid in the bubbling section 4 and transfers it to the settling section 5. Heavy liquid droplets under the force of gravity fall down the settling section, lighter ones beat off with a mesh nozzle 11, and the final separation of gas and liquid occurs in the separating device 12. The separated gas through the collector 9 post paet next downstream section of the gas bubble.

The liquid, having contact with gas, from the settling section 5 flows into the bubbling section 4 under the partition 2.

Thus, in a column with a general counterflow of gas and liquid, mass transfer occurs in the flow through the transfer of liquid gas energy from the bubbling section to the settling, the resistance of the bubbling section decreases, the energy loss of the gas decreases, the mass exchange improves.

Claims (2)

1. Horizontal mass transfer column according to ed. St. No. 593705, characterized in that, in order to increase the capacity of the fluid due to the forced flow of fluid from the bubbling section in the settling, the outlet openings of the bubbling device are located along the movement of the fluid. 2. A mass transfer column according to claim 1, characterized in that it is provided located between the vertical partitions mesh mesh. Sources of information taken into account in the examination; 1. USSR Author's Certificate No. 319317, cl. At 01 D 3/20, 1970. 2. Copyright certificate CCCR No. 593705, cl. B 01 D 3/20, 1976.