SU1693623A1 - Device for study on sorption and catalitic reaction processes - Google Patents

Abstract

The invention relates to devices for the study of sorption or catalytic processes in devices with a radial course of the medium through the granular layer and can be used in the chemical and other industries. The purpose of the invention is to reduce metal consumption and save granular material by creating conditions for simulating the process flow on a restrictive site. The device, which includes a cylindrical body with inlet and outlet nozzles, an external and internal perforation shells, is provided with a simulating conical insert. 1 il.

Description

The invention relates to devices for the study of catalytic sorption processes for apparatus with a radial course of the medium through the granular layer and can be used in the chemical, metallurgical and other sectors of the industry.

The purpose of the invention is to reduce the metal content and save the granular material by creating conditions for simulating the process flow on a limited area.

The drawing shows the device, a general view.

The device includes a housing 1, the inlet 2 and outlet 3 of the medium, the inner 4 and outer 5 perforated shells with a diameter of di and DI, rigidly mounted on shelves 6 and 7, and the shelf 7 is rigidly connected to the housing 1. Between the inner 4 and outer 5 are perforated the granular mass 8 is filled up with the shells. Between the perforated shells 4 and 5 there is a conical imitating insert 9 with diameters of small and large bases da and Da and a height h equal to the thickness of the radial layer - di. When the device operates, the medium enters through the pipe 2 onto the granular layer 8, passes through it and passes through the pipe 3 from the device. To reproduce the conditions of distribution of the linear velocities of the medium in a conical insert, identical to the entire layer of the device

va, it is necessary that - -, where D2 and

d22 dl

d2 are the diameters of the outer and inner perforated shells, a Di and di are the diameters of the large and small bases of the conical insert.

Proposed dependencies obtained by calculation. To ensure the conditions for the distribution of the linear velocities of the medium over the granular layer in the conical insert 9, which are identical to the same conditions over the entire layer of the device with a radial course of the medium, the following calculations are carried out. Take height

w

Yo

Os

Yu

00 ON N5 S

the radial layer in the device is N, the flow rate through it is Gi, the flow rate of the medium through the insert is 9 G2, then the velocity of the medium entry into the entire radial layer is ViBx

Vi - G1

V1bx off

and the rate of medium exit from the radial

Layer / 1st out

wGi

VlBblx d7HB conical insert, respectively, the speed of the entrance of the medium / 2 in and exit / 2out are equal

.. / lgE} 2., g. dg2 V2Bx Ga / - and V2BWx Ga / 4.

According to the conditions of identity, the velocity distribution ViBX / ViBbix of an industrial apparatus must be equal to / 2in / U2out of the experimental device. After substitution of values we get

Gi / 7rDiH: Gi / jrdiH

G2 /

Oh

: G2 /

jtrJ2:

or

Di D2

di

d2

The radial-type adsorber is mm; mm; H 12,000 mm.

To carry out studies of adsorption in the radial layer, simulating the conditions of the apparatus, it would be necessary to manufacture the apparatus with an internal diameter equal to the diameter of the industrial apparatus and a height of at least 1 mm.

Under the condition of the apparatus operating at a pressure of 8 MPa, the mass of the experimental device would be equal to the mass of two bottoms and a shell 1 mm high. The wall thickness S with an internal diameter of 3800 mm will be equal to

pDB

80 380

2 (o) rr 2 985 1-80

 16cm

l

where p is the pressure, kgf / cm;

DB is the internal diameter of the apparatus, cm; a is the allowable voltage for CT.12X18XHIOT at t 300 ° C;

p is the coefficient of strength of the weld.

The mass of the shell with a wall thickness of 160 mm and a length of 1 m will be equal to M, 785 (On2-0v2) -7.8 N

. 0.785 (41.22-38.02) 7.8 10-15518 kg. The mass of the two bottoms is equal to М2 11257 2 22514 kg.

When conducting research in a conical insert with an internal diameter

larger base of a truncated cone D2

 140 mm diameter smaller base

truncated cone d2 should be

I I P22 di Y 1402 400. „

d2 | | 48mm.

The height of the truncated cone must be equal to

h. 3400-400-150 Ohm.

The mass of the insert at a pressure of 8 MPa is 120 kg.

Claims (1)

Economy of metal will be 37912 kg. Invention Formula A device for conducting a study of sorption or catalytic processes, comprising a cylindrical body with inlets and outlets of the medium, inner and outer perforated shells between which a granular layer is located, characterized in that, in order to reduce metal consumption and save granular material by creating a limited area conditions for simulating the process, it is provided with a simulating insert of conical shape with a height equal to the thickness of the granular layer, and the ratio of the diameters of the conical stav- ki and perforated shells D22 / d22 Di / di, where D2 is the diameter of the large base of the insert cone; d2 is the diameter of the small base of the insert cone; 0 DI - diameter of the outer perforated shell; di is the diameter of the inner perforated shell.