SU1398892A1 - Heat-mass exchange apparatus - Google Patents

Abstract

The invention can be used to separate multicomponent mixtures. The purpose of the invention is to improve the distribution of the distillate in mass transfer elements. The contact elements are made in the form of two concentrically installed tubes, in the space between which the corrugated nozzle is located, and in the inner cavity of the elements, plugs are installed, while in the walls. the inner tube is provided with holes, the flow area of which is 8-12% of the free section area of the tube. The distance between the holes in the walls of the inner tube is 5-6 times the diameter of the holes. The plugs are installed at a distance of 0.5-1 tubes. The nozzle is installed in layers that are offset from each other within the corrugation. 4 hp f-ly, 2 ya. ABOUT)

Description

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The invention relates to instrumentation for the separation of multicomponent mixtures and may find application in the chemical and some other industries.

The purpose of the invention is to intensify the process of heat and mass transfer by improving the distribution of liquid,

Figure 1 shows the apparatus, a general view; FIG. 2 - node I in FIG. 1;

The heat and mass transfer apparatus includes a housing 1, tube sheets 2, a bundle of contact elements, each of which is made in the form of concentrically mounted outer 3 and inner 4 tubes, capacity 5, in a flat bottom 6 of which nozzles 7 are fixed, measuring tanks 8, branch pipe 9 of fluid supply 10 liquid discharge, gas phase supply pipe 11, gas phase outlet pipe 12, thermal agent feed pipe 13, thermal agent outlet pipe 14.

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A corrugated nozzle 15 is placed between the outer 3 and inner 4 tubes-25 in the annular space of the contact tubes, installed by layers displaced relative to each other within the corrugation pitch. In the inner cavity of the contact elements, the gaps of the head 16 are located at a distance of 0.5-1 from the diameter of the tube 4. The inner tubes 4 are made with holes 17, the flow area of which is 8-12% of the free surface area. the cross sections of the tube 4 and the distances between the holes are 5-6 hole diameters.

Heat and mass transfer apparatus operates as follows.

The gas phase, for example hydrogen, is fed through the pipe 11 into the annular space between the tubes 3 and 4 of the contact elements filled with the nozzle 15. Through the pipe 9 serves, for example, liquid hydrogen containing chlorosilanes impurities 5 into the tank 5 with a flat bottom 6, which carries out the irrigation of mass transfer elements by means of fittings 7 and measuring tanks 8, the depth of which is selected from the condition of the required supply of liquid and providing the required static head. After the passage of the dipsticks 8, the liquid phase is evenly distributed over the nozzle 15, flowing out of the holes 17 located above the plugs 16, the selected flow area of the holes 17, and

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Claims (5)

items. The heat agent is removed from the contact zone through the pipe 14 The formula of the invention 1, Heat and mass transfer apparatus, comprising a housing with tube sheets and a bundle of contact elements and a liquid distributor with fittings, characterized in that, in order to intensify the heat and mass transfer process by improving the distribution of the liquid, the contact elements are made in the form of two concentrically mounted tubes, in the space between which the corrugated nozzle is located, and in the inner cavity of the elements, plugs are installed, and holes are made in the walls of the inner tube, the flow area of which is 8-12% of the free section area of the tube. 2, The apparatus according to claim 1, wherein the distances between the holes in the walls of the inner tube are 5-6 times the diameter of the holes. 3, Apparatus according to claim 1, characterized in that the plugs are installed from the end face at a distance of 0.5-1 tube diameter. 4, The apparatus according to claim 1, characterized by the fact that the corrugated nozzle is installed in layers. the pitch between them ensures uniform irrigation of the nozzle and its wetting along the entire perimeter of the contact elements. The displacement of the layers of the nozzle promotes uniform irrigation of the entire layer of the nozzle in each section along the height of the apparatus. In the process of heat and mass transfer between the flowing liquid and the upward vapor flow in the annular space, one of the components of the mixture separates, which, together with hydrogen, is removed from the working volume of the apparatus through the nozzle 12. The contacted liquid flows into the lower part of the apparatus, from where it is removed by means of the nozzle 10 To increase the temperature difference between the gas and liquid phases, a thermal agent, such as hydrogen, is supplied through the pipe 13 to the annular space of the apparatus, at a temperature exceeding perature hydrogen entering five 0 5 in annulus contact o five 0 five items. The heat agent is removed from the contact zone through the nozzle 14. The claims of the invention 1, Heat and mass transfer apparatus, comprising a housing with tube sheets and a bundle of contact elements and a liquid distributor with fittings, characterized in that, in order to intensify the heat and mass transfer process by improving the distribution of the liquid, the contact elements are made in the form of two concentrically mounted tubes, in the space between which the corrugated nozzle is located, and in the inner cavity of the elements, plugs are installed, and holes are made in the walls of the inner tube, the flow area of which is 8-12% of the free section area of the tube. 2, The apparatus according to claim 1, wherein the distances between the holes in the walls of the inner tube are 5-6 times the diameter of the holes. 3, Apparatus according to claim 1, characterized in that the plugs are installed from the end face at a distance of 0.5-1 tube diameter. 4, The apparatus according to claim 1, characterized by the fact that the corrugated nozzle is installed in layers. 31398892 5. The apparatus according to claim 1, about tl and h a - are shifted relative to each other in the second and the fact that the layers of the nozzle are within the corrugation step. Compiled by V.Tarasov Editor I.Rybchenko Tehred M.Hodanich Proofreader V.Girn to Order 2617/6 Circulation 642 VNIIPI USSR State Committee Software Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 f Phage.2 phage. one Subscription