CS200719B1 - Stop of the catalyser in the pipes of chemical ractors - Google Patents

Description

The invention aa relates to a catalyst stop in the tubes of the Han reactors. In the tubular reactors a and the evident tubing and catalyst charge aa use different design adjustments of the stops which find several requirements.

Maintain the catalyst return in the individual tubes and allow the evacuation of the reaction gases formed as closely as possible. Requirements It is possible to use the knife in various tubes to be connected to the tube plate (rolled, welded) and to remove and install it and to resist corrosion and high temperatures.

The present construction method can be divided into two main ways: the stop consists of a perforated sheet, aito or another partition. This prevents the catalyst from falling out of the reaction tubes, but allows the passage of the reaction gases, but is common to all or part of the reaction tubes.

The stops are mounted in each reaction tube. The first method is considerably cheaper because of its manufacturing simplicity, but has the great disadvantage that in the event of failure it is one of the reaction tubes, for example corrosion. It is necessary to dismantle the stop to cause the catalyst to fall out of all reaction tubes.

The second method of attachment eliminates the great disadvantage of the first method, however, it is expensive and laborious.

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When designing the design of the stops placed in the individual tubes, the aim is to make the stop as simple as possible. One of the most commonly used methods is a stop made of a nobo Olto serrated ring, to which most of the three spring parts made of wire and shaped are welded. The front plates are primed to the perforated ring so that they are oriented in the ornate of the pipe. This arrangement has several disadvantages: the design of the three evers for the platen spring is very laborious, and this disadvantage is particularly pronounced when using reaction tubes of low diameters. Said method of attaching the spring members reduces the free area of the perforated ring required to remove the reaction gases. To facilitate denontéže stops it is necessary to connect the dolil adjustment of the spring-loaded cutting elements. Tin ee sounded again the open area of the perforated ring.

The design of the stop according to the invention avoids the essential disadvantages mentioned above. According to the invention, the principle of the catalyst stop in the tubes of chemical reactors consists in that it consists of a bonding segment adjacent to the inner circumference of the tube and passing into a tapering spiral (cone) or formed by a perforated ring or alto.

The stop is simple to manufacture and significantly reduces production costs. 3e made of one piece of flexible, rigid and non-corrosive material.

The spring set is provided as an inner securing segment which provides a superior fit to the inner surface of the tube and is followed by a stop element. The upper axis of the flat spiral stopper is adjusted according to the size of the catalyst or the conical coil spring with the required spacing between the individual wires in some cases, and in some cases the stopper is preferably constructed without a perforated ring.

In the accompanying drawings, a stop according to the invention is shown. Fig. 1 shows an example of a stopper inserted into a reactor tube; Figs. 2 and 4 show a stopper made of a single piece of material; The material is preferably steel wire in all cases. *

FIG. 1 shows the inner safety segment of the wire fixedly to the inner circumference of the tube and 2 of the reactor tube stopper 3. In FIG. 2, the inner safety segment and the stopper 2 represent the upper part of the safety oogmont 1 which eplrély. In Fig. 3, the inner drive osgmont and the stop 2 are represented by a perforated ring mounted in the upper part of the locking segment 11. In Fig. 4, the locking segment 11 passes into a stop 2 in the form of a conical coiled spiral.

The stop according to the invention can be used in all chemical tubular reactors with pipe diameters up to 50 mm.

Claims (1)

Catalyst stop in the tubes of chemical reactors, characterized by the pressure formed by an internal safety segment (1). fixedly abutting the inner circumference of the tube (3), the stop segment (1) being adjoined by a stop element (2).