RU1773473C - Vertical tubular reactor - Google Patents

Abstract

The invention relates to apparatus for carrying out corrosion processes in the chemical and other industries. SUMMARY OF THE INVENTION: A vertical tubular reactor comprises a housing and a manifold provided with axial spacers installed inside it, the upper chamber being rigidly connected to the lower one by means of a weld, and the outer tubes are fixed to the wall with the entire thickness. 1 s.p. f-ly, 4 ill.

Description

The invention relates to apparatus for carrying out corrosion processes in the chemical, petrochemical and other industries.

A vertical reactor for carrying out chemical processes is known, comprising a housing with tube plates in which reaction tubes are coaxially fixed to form chambers above the upper tube plate for supplying reagents 1.

However, this apparatus is unreliable during corrosion processes due to the failure of the attachment points of the reaction tubes to the tube sheets and the difficulty of access to them during manufacture and repair.

A vertical tube reactor is also known, which comprises a high pressure pressure lined pressure vessel lined with a corrosion resistant material and a bundle of corrosion-resistant Field tubes. The ends of the tubes enter a two-chamber manifold located below the reactor 2.

According to the technical nature and the achieved result, this device is the most

is close to the invention, whereby it is adopted as a prototype.

The disadvantages of the prototype are low reliability of the reader and difficult access to the places of fastening of the tubes during manufacturing and repair.

The purpose of the invention is to increase the reliability of the reactor while ensuring the convenience of its manufacture and repair. The goal is achieved in that the collector is located inside the housing, provided with axial struts and. installation and technological welds in the center and on the periphery of the joints of the upper and lower distribution chambers of the collector removed for repairing the places of welding of the Field tubes. In this case, the collector can be removable or welded directly to the inner surface of the bottom cover. Field's outer tubes are welded to the end wall of the upper chamber of the collector from the inside to the entire thickness of this wall.

Figure 1 presents a vertical section of the proposed reactor with a removable

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collector; figure 2 shows a variant of the reactor with welding of the collector to the inner surface of the bottom cover; Fig. 3 shows a cross section of the upper chamber of the collector; figure 4 - node I in figure 1.

The reactor includes a cylindrical body 1, gaskets 2 sealed with it 2 top cover 3 and bottom cover A. All internal surfaces of the reactor are coated with a corrosion-resistant lining 5, Inside the reactor there is a two-chamber collector 6 with a partition dividing it into upper 7 and lower 8 distribution chambers to which, respectively, the external tubes of the Field 9 and the internal tubes of the Field 10 are attached, Axial spacers 11 are installed in each chamber of the manifold for sensing the external pressure of the working medium and unloading the end walls to the collector. The joints of the upper and lower chambers are connected in the center and on the periphery by assembly-technological welds 12. The outer tubes of the Field 9 are welded to the end wall of the upper chamber from the inside by ring welds 13 to the entire wall thickness. There are nipples 14 and 15 for input and output of the mixture of working media, and nipples 16 and 17 are provided for the input and output of the coolant. The collector can be circuitous, as shown in Fig. 1, or welded to the inner surface of the lower cover, as shown figure 2.

The reactor works as follows,

Through the nozzle 14, mounted in the bottom cover 4, a mixture of working fluids is supplied from below to the reactor. Simultaneously through

the nozzle 16 is supplied with a high temperature coolant to the lower chamber 8 of the manifold b to maintain the optimum temperature in the reaction zone. Coolant

rises up along the inner tubes of the Field 10, passes into the gap between them and the outer tubes of the Field 9, through which it goes down to the upper chamber 7 of the manifold 6, from where it is discharged through the fitting 17.

Thus, the reaction mixture flows upward inside the reactor vessel 1, and the coolant flows through the outer tubes of Field 9 from the top down, creating a counterflow for optimal heat transfer. The reacted working fluids are discharged through the fitting 15 located in the top cover 3.

Claims (2)

1. Vertical tubular reactor for corrosive chemical processes, comprising a housing with covers and an inner lining, a two-chamber manifold and Field tubes, characterized in that which, in order to increase the reliability of the apparatus while ensuring the convenience of its manufacture and. repair, the two-chamber collector is located in the chamber and is equipped with axial struts installed inside the upper chamber of the collector is rigidly connected to the lower one by means of welds in the center and around the periphery, and the ends of the outer tubes of the Field are welded to the end wall of the upper chamber from the inside on all thickness 2. The reactor according to claim 1, wherein the collector is welded directly to the inner surface of the bottom cover. s3 Gh th # / and N Clt7EZ.il go r- sT with g-g