SU1627241A1 - Reaction vessel - Google Patents

Abstract

The invention relates to the chemical industry, is intended for use in apparatus with mechanical mixing devices, intended for carrying out chemical processes in liquid media with a large release or absorption of heat, and allows increasing productivity by increasing the specific heat exchange surface. The reactor contains a vertical jacketed body, internal sectional gtrubnye heat exchangers, a circulation pipe with a conical bottom and a mixing device. The through holes with hollow tubes are located at the same distance from the mixing device installed at the top of the bottom cone. 2 Il.

Description

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The invention relates to a large-scale apparatus with mechanical agitators designed for carrying out chemical processes in liquid media with a large release or absorption of heat.

The purpose of the invention is to increase the productivity of the reactor due to the intensification of heat exchange,

FIG. 1 shows the reactor; in fig. 2 is a section A-A in FIG. one.

The reactor contains a vertical cylindrical housing 1 with a jacket 2, a circulation pipe 3, a conical bottom 4 in which a number of through holes 5 are made, vertical hollow pipes 6, sectional tubular heat exchangers 7, an agitator 8 with an electric drive 9, hatches for installing heat exchangers. The circulation pipe 3 is installed in the housing 1 coaxially with a radial gap whose area is equal to the area of all hollow pipes 6 minus the area of pipes of sectional heat exchangers. A mixing device 8 representing a screw with a cylindrical nozzle is located in the center of the conical bottom 4.

The holes in the conical bottom and the hollow vertical pipes fixed in them are made uniformly around the circumference and at the same distance from the mixing device.

The reactor is equipped with nozzles for supplying raw materials 10 and withdrawing product 11 and nozzles for supplying 12 and withdrawing 13 heat carrier to each section of the heat exchanger.

The reactor operates as follows.

Under the action of the pumping effect of the mixing device 8, the reaction medium is pumped through the cylindrical nozzles from top to bottom, then the stream washes the bottom of the case and is divided into two streams.

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One part of the flow enters the annular gap between the casing and the circulation rough, the other part is directed through the holes in the conical bottom and the hollow tubes with heat exchangers installed in them.

In this case, the tubes of the heat exchangers flow around the edge, which excludes their contamination. After exiting the annular gap and the hollow tubes, the reaction stream flows into the circulation tube and again into the mixing device. To dismantle the heat exchanger sections, the reactor lid is fitted with hatches on which the inlet and outlet connections of the heating medium are installed.

The heat exchanger section is made with a single chamber and a tube plate connected by V-shaped tubes.

When using the invention, an increase in productivity is achieved in

BUT

five

four

by increasing the specific heat exchange surface.

The use of the invention allows significantly (at least twice) to increase the productivity of the device.

Claims (1)

Claims of the Invention A reactor comprising a vertical case with a heat-exchange jacket, built-in sectional tubular heat exchangers, a circulation tube with a conical bottom and a mixing device, characterized in that, in order to increase productivity due to the intensification of heat exchange, the circulation tube is evenly equipped vertical tubes placed around the circumference in which tubular heat exchangers are installed, with holes in the conical bottom in which the lower ends of the vertical are fixed New pipes, 15 . ten eleven FIG. one Aa FIG. g