SU1274702A1 - Heat-mass exchange catalytic reactor - Google Patents

Description

The invention relates to aiiiiapaTyi) to the design of tenlo-mee exchange processes in gas (vapor) -liquid systems and can be used in poverty, chemical and adjacent fields, and, of course, to produce alcohols.

The purpose of the invention is to intensify mass transfer by rational redistribution of the liquid in the overflow device and reducing the nano-transverse irregularity on the plates but the liquid and the disturbance.

FIG. Figure 1 shows the tenlomassoobmenny contact apparatus, a longitudinal section; in fig. 2 - the same plan view; in fig. 3 - the same, a variant of the location of the leorodok with one-sided fixation.

Annarat includes a vertically banded cylindrical cornea 1, inside which are placed the plates 2 with contact mesh perforated elements 3, as well as segment overflow devices 4 with vertically secured non-enclosing 5, formed by sections of cylindrical surfaces, the bases of which are concentrically arranged circles with center located behind the apnarata body at the longitudinal axis of the dish passing through the non-relaying device 4, and with the largest diameter and They do not exceed the internal diameter of the apparatus. Contact elements 3 can also be made in the form of caps, valves, gaps of different shapes (not shown).

The device works in the following way.

The initial mixture is fed to the cornea 1, where it is subjected to separation into its components through a cross-flow interaction of the upward flow of the gas (vapor) phase with the fluid moving over the plate 2. After the working part of the plate 2 is drilled, the contact liquid is discharged into the overflow device 4 equipped with vertical profiled non-enclosures 5. When the liquid flow interacts with partitions 5, it is reflected to the periphery of the overflow device, resulting in maximizing fluid flow in the center of the inlet portion of the downstream contact formed by the next plate 2, as well as increasing the flow of the liquid phase into the near-wall areas of the working part of the plate 2 and eliminating stagnant zones in these areas. At the same time, the conditions for the occurrence of channels of a clear liquid in the drainage direction along the centerline of the tray 2 are eliminated. In the end, this leads to a reduction in the transverse non-uniformity on the tray 2 and to the approximation of its operation to the perfect fluid flow.

most advantageous for efficient separation of a single stage of contact and apparatus as a whole. This is especially important for achieving high purity of the product obtained.

The invention can be used in hardware design of heat and mass transfer of processors of a wide spectrum of load ratios for the liquid (L) and gas (steam) (G) phases. For large values of the L / G ratio, which usually takes place in the processes carried out under pressure, it is advisable to use a monotonic decrease in the level of the upper edges of the partitions but as they move away from the line

plum. For vacuum processes, it is most advisable to increase the level of the upper edges, since the relative load on the gas (pair) increases, which creates conditions for intensive drop formation. At insignificant gas speeds

(a pair) in the apparatus, the irregularity of the liquid inlet is relatively small, and therefore satisfactory operation of the contact stages is eliminated by installing partitions with one-sided

fixing, which reduces the consumption of sheet metal by almost half. With an increase in the speed of movement of the light phase and an increase in the unevenness at the inlet of the plates, it becomes necessary to use double fixation partitions,

providing more stable compensation of the effect of curvature of overflow devices.

Partitions of overflow devices, formed by sections of cylindrical surfaces, the bases of which prefigure concentrically arranged circles with a center, located behind the body of the apparatus on the traverse axis of the plate passing through the overflow devices, and exceeding the internal diameter of the body of the apparatus, intensify mass exchange of liquid. rational redistribution of fluid in the overflow device and reduction of non-uniformity on the plates of the liquid and viol. In this case, the liquid is reflected in the overflow device to the periphery due to the inverse curvature of the partitions. At insignificant loads in phases, the sections directly adjacent to the drain line participate in the work. With an increase in the load on the gas (pair), the kinetic energy of the contacting liquid and its splashing increase, and the entire length of the nonregions is included in the work. Fluid inlet to the plates decreases in the near-wall areas in a wide range of loads

phases.

If the diameter of the partitions exceeds the internal diameter of the apparatus, the shape of the partitions approximates

its geometry to the plane and mass transfer becomes less intense.

Claims (1)

Invention Formula Heat and mass transfer contact apparatus, primarily for the production of alcohols, containing a vertically mounted cylindrical body and plates inside it with contact elements and segment overflow devices with vertically reinforced partitions, characterized in that in order to intensify mass exchange by rational redistribution of the liquid in the overflow device and reduce transverse irregularities on the plates of the liquid and a couple, the walls of each overflow device forming These are sections of cylindrical surfaces, the bases of which are concentrically arranged circles with the center located behind the body of the apparatus on the longitudinal axis of the plate passing through the overflow device and the diameter of the largest of them not exceeding the inner diameter of the body of the apparatus. five 2 -5 5 rig.1 .3