SU1465105A1 - Reactor - Google Patents

Abstract

The invention relates to chemical equipment for carrying out the process of esterification of terephthalic acid with ethylene glycol and provides high productivity of the apparatus. In the reactor, a heat exchanger is installed in the form of multiple coils with collectors for the inlet and outlet of the heat transfer medium. These collectors are arranged vertically from the side of the heat-exchange tubes furthest from the reactor axis. The collectors are provided with a number of additional horizontal collectors directly connected to the heat exchange tubes. 3 silt:

Description

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The invention relates to continuous devices for carrying out chemical reactions, in particular for the esterification of terephthalic acid with ethylene glycol. .

The purpose of the invention is to increase productivity by improving heat transfer.

FIG. 1 shows the reactor section; in fig. 2 is a view A of FIG. one; in fig. .3 is a block diagram of the reactor heat exchange device.

The reactor contains a vertical cylindrical housing 1 with an internal heat-beating device 2 and an external heat exchange jacket 3. The internal heat exchange device 2 consists of five individual coils 4-8, with coils 4 and 5 installed coaxially coils 6-8, and coils 4 and 5 installed coaxially coils 6-8. On the bottom of the housing 1 there are inlet pipes 9-13 and outlet 14-18 of the heat transfer fluid for easy removal of the heat exchanging device. Each of these coils, for example, coil 5 to improve the uniform distribution of the coolant is provided with vertically mounted collectors of the inlet 19 and outlet 20 of the coolant located on the side of the coils furthest from the reactor axis of the heat exchange tubes

coil Vertical collectors 19 of the input of the coolant and the 20 output of the coolant are equipped with additional horizontally installed one above the other collectors, respectively, 21 and 22.

The reactor is also equipped with fittings. 23 to enter the reaction mixture; 24 to exit the finished product; 25 to remove reagent vapors.

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The reactor operates as follows.

The reaction mixture, for example, a suspension of terephthalic acid in ethylene glycol, continuously enters the reactor through fitting 23. The high-temperature heat transfer vapors enter through the nozzles 9-13 of the vapor inlet in the vertical collectors 19, of which are distributed along additional horizontal collectors 21 and further along heat exchange tubes. The condensate flows through the heat exchange tubes of the coils, first into the horizontal manifolds 22, and then into the vertical manifolds 20 and out of the apparatus through the nozzle 15, as well as 14, 16-18.

In the working volume of the reactor suspension. The heats are heated and the esterification of terephthalic acid with ethylene glycol takes place. Part of the ethylene glycol vapor is discharged from the reactor through nozzle 25. The finished product (etherig

fixate) output from the reactor through unit 24.

In the case of dismantling the heat exchanger coils, they remove the lid of the apparatus, cut off the inlet and outlet connections of the coolant and, in turn, dismantle the coils. The installation of the coils is carried out in the reverse order.

Claims (1)

Invention Formula A reactor containing a vertical housing with a heat exchange jacket, inside of which is placed a multi-core coil connected to the inlet and outlet manifolds of the coolant, characterized in that, in order to improve performance by improving heat exchange, it is equipped with additional inlet and outlet manifolds placed vertically side of the outer surface of the coil and horizontally one above the other and connected to the coil. gz eleven " Thebes. one / J go 15 IB