RU2725236C1 - Catalyst loading device - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to a device for loading material in form of catalyst particles into a tubular reactor. Device comprises funnel consisting of hopper, feed pipe for catalyst loading and cylindrical pipe installed coaxially with reactor tube, wherein the inner diameter of the pipe is equal to the inner diameter of the pipe of the reactor, and the supply pipe is fixed at an angle to the cylindrical pipe, as well as a cable and a linear assembly attached thereto for its lowering into the reactor tube and extraction from the reactor pipe, wherein the linear assembly is made in form of a rotary device connected to the block part with springs, wherein the springs are installed in staggered order in radial holes made in linear units perpendicular to their axis.

EFFECT: invention ensures uniform catalyst loading and prevention of destruction of catalyst granules.

9 cl, 10 dwg

Description

The invention relates to loading material in the form of catalyst particles into a tubular reactor.

A device for loading a catalyst according to the patent of the Russian Federation for the invention No. 2320526, IPC B65G 65/32, publ. 03/27/2008

This device comprises a transverse beam in the lower half of the upper cylindrical part of the device, to which a pneumatic actuator is attached from above in the center along the axis of the upper cylindrical part. A cylindrical housing is attached at the bottom with a shaft mounted in a cylindrical housing by means of two bearings and connected with its upper end through a coupling to the shaft of the pneumatic actuator, and with its lower end to the lower rotating element, including a vertical cylindrical part and a horizontal floor attached to it with a cylindrical end floor with disk end faces, to which the straps are attached.

Disadvantages: the destruction of the catalyst particles during its loading and the complexity of the loading mechanism.

A device for loading a catalyst according to the patent of the Russian Federation for the invention No. 2252067, IPC B01J 4/00, publ. 05/20/2005.

This device is designed to load catalysts in the reactors of technological plants. Loading is carried out by feeding them to the reactor through a loading device, consisting of a receiving funnel, a connecting pipe and a distribution device, connected in series to each other. The switchgear is a cylindrical housing equipped with a dispenser, a divider, a nozzle and a source of rotational movement of the nozzle. A uniform distribution of catalyst particles is achieved by changing the pressure entering the source of rotational movement of the nozzle of air or inert gas.

The disadvantages are the complexity of the loading mechanism and the destruction of the catalyst particles.

A device for loading a catalyst according to the patent of the Russian Federation for the invention No. 2477170, IPC B01J 8/08, publ. 03/10/2013, the prototype.

This catalyst loading device comprises a linear unit and a cable to which a linear unit is attached for lowering it into the pipe of the tubular reactor and removing it from said pipe and a funnel consisting of a hopper and a supply pipe for loading the catalyst, wherein the linear unit is made in the form connected to the rotary means of at least one block part with springs mounted perpendicular to the linear node.

Disadvantages: uneven loading of the catalyst due to unsuccessful funnel design and incorrect positioning of the springs.

The objective of the invention: to ensure uniform filling of the catalyst into the reactor tubes and preventing the destruction of its particles.

Achieved technical results: ensuring uniform filling of the catalyst into the reactor tubes and preventing the destruction of its particles.

The solution of these problems was achieved in a device for loading a catalyst containing a linear assembly and a cable, to which a linear assembly is attached to lower it into the pipe of the tubular reactor and remove it from the specified pipe, and a funnel consisting of a hopper and a feed pipe for loading the catalyst, the linear assembly is made in the form of at least one block part connected to the rotary means, with the springs installed in them, in that the springs are staggered in radial holes made in the linear assemblies perpendicular to their axis, and the funnel contains a cylindrical pipe , the inner diameter of which is equal to the inner diameter of the pipe, installed coaxially with it, and the supply pipe is fixed at an angle to the cylindrical pipe.

The diameter of the block part can be made:

D _bch = (0.2 ... 0.4) D _tr

where: D _bch - the diameter of the block part,

D _Tr - the inner diameter of the pipe.

Springs can be attached to the block part with screws mounted in threaded holes made perpendicular to the holes for the springs.

A load may be secured at the lower end of the linear portion.

The block part can be made of metal.

The surface of the block part and springs is covered with a layer of elastic polymer.

The surface of the block part and the springs may be coated with a layer of rubber.

The cable may be made of metal.

The cable can be made nylon.

The invention is illustrated by drawings (Fig. 1 ... 10), where:

in FIG. 1 shows a view of the device assembly

in FIG. 2 shows view A,

in FIG. 3 shows the block part assembly,

in FIG. 4 shows the location of the springs on the block part,

in FIG. 5 shows the funnel assembly,

in FIG. 6 shows a rotary means

in FIG. 7 shows the block part in the pipe,

in FIG. 8 is a view B of FIG. 7,

in FIG. 9 shows the block part.

in FIG. 10 shows a section CC.

Symbols accepted in the description:

tube 1,

line node 2,

cable 3,

funnel 4,

hopper 5,

feed pipe 6,

cylindrical pipe 7,

outlet 8,

inlet 9,

rotary means 10,

block part 11,

spring 12,

cable segment 13,

loop 14,

clamp 15,

radial hole 16,

screw 17,

threaded hole 18,

mounting hole 1

coating 20

cargo 21.

A device for loading the catalyst into the tube 1 of the reactor (Fig. 1) contains a linear unit 2 and a cable 3, to which a linear unit 2 is attached to lower it into the pipe 1 of the tubular reactor and remove it from the specified pipe 1 and a funnel 4, consisting of a hopper 5 and feed pipe 6, for loading the catalyst.

Cable 3 can be metal or kapron.

A feature of the funnel 4 is the presence of a cylindrical nozzle 7. The cylindrical nozzle 7 is installed vertically in working condition. The cylindrical pipe 7 is installed coaxially with the pipe 1, the feed pipe 6 of the funnel 4 is fixed at an acute angle ϕ to the axis of the cylindrical pipe 7 (Fig. 1 and 5). Preferably, to optimize the speed of filling the granules, the angle ϕ is performed in the range:

ϕ = 30 ° ... 45 °.

The outlet 8 of the cylindrical pipe 7 during operation should be aligned with the inlet 9 of the pipe 1.

Moreover, the inner diameter of the cylindrical pipe 7 D _ext should be equal to the inner diameter of the pipe 1 - D _Tr ., I.e.:

D _int = D _Tr .

Linear assembly 2 comprises pivoting means 10 (FIG. 6) comprising at least one block part 11 with springs 12 mounted on block parts 11 perpendicular to their symmetry axes.

The design of the rotary means 10 is shown in FIG. 6 and it consists of a length of cable 13 with two loops 14 having a pair of clips 15.

The springs 12 are mounted in a checkerboard pattern (Fig. 4) in the radial holes 16 made in the block parts 11. In contrast to the spiral arrangement of the springs, this arrangement eliminates the twisting of the catalyst flow and the formation of a “roller” on the periphery.

The diameter of the block part 11 (Fig. 1, 4 and 9) can be made in the ratio:

D _bch = (0.2 ... 0.4) D _tr

where: D _warhead - the diameter of the block part 11,

D _Tr - the inner diameter of the pipe 1.

With these ratios, clutter of the pipe section is from 4% to 16%, which will not affect the uniformity of the distribution of the catalyst.

The springs 12 can be attached to the block part 11 with screws 17 mounted in threaded holes 18 made perpendicular to the radial holes 16 for the springs 12 (Figs. 9 and 10). This eliminates the loss of springs 12 during operation.

At the ends of the block parts 11, mounting holes 19 are made for installing the cable 3 and loops 14.

On the surface of the springs 12 and the block parts 11, a coating 20 of elastic polymer or rubber can be applied (FIGS. 9 and 10).

At the lower end of the linear node 2 can be suspended load 21 (Fig. 1).

The device operates as follows.

Install a funnel 4 so that the outlet 8 of the cylindrical pipe 7 coincides with the inlet 9 of the pipe 1. Throw a linear unit 2 on the cable 3 into the cylindrical pipe 7 (Fig. 1).

The catalyst is poured into the hopper 5 of the funnel 4.

The catalyst passes between the springs 12 located in a checkerboard pattern and evenly fits into the pipe 1.

Linear assembly 2 for cable 3 is gradually raised up. The cavity of the pipe 1 is filled with a catalyst. However, its granules are not destroyed due to the small mass of the springs 12 and their checkerboard arrangement and the presence of a plastic coating 20.

The application of the invention allowed:

- to ensure uniform loading of the catalyst,

- eliminate the destruction of the catalyst grains,

to simplify the design of the device,

- exclude the operation of shaking the tube sheet.

Claims (12)

1. A device for loading a catalyst containing a linear node and a cable to which a linear node is attached to lower it into the pipe of the tubular reactor and remove it from the specified pipe, and a funnel consisting of a hopper and a feed pipe for loading the catalyst, while the linear node is made in the form of at least one block part connected to the rotary means with springs installed in them, characterized in that the springs are staggered in radial holes made in linear units perpendicular to their axis, and the funnel contains a cylindrical pipe whose inner diameter is equal to the inner diameter of the pipe, mounted coaxially with it, and the supply pipe is fixed at an angle to the cylindrical pipe. 2. A device for loading a catalyst according to claim 1, characterized in that the diameter of the block part is made: D _bch = (0.2 ... 0.4) D _tr where: D _bch - the diameter of the block part, D _Tr - the inner diameter of the pipe. 3. The device for loading the catalyst according to claim 1, characterized in that the springs are attached to the block part with screws mounted in threaded holes made perpendicular to the holes for the springs. 4. A device for loading a catalyst according to claim 1, characterized in that a load is fixed at the lower end of the linear section. 5. A device for loading a catalyst according to claim 1, characterized in that the block part is made of metal. 6. A device for loading a catalyst according to claim 5, characterized in that the surface of the block part and the springs is coated with a layer of elastic polymer. 7. A device for loading a catalyst according to claim 5, characterized in that the surface of the block part and the springs are coated with a layer of rubber. 8. A device for loading a catalyst according to claim 1, characterized in that the cable is made of metal. 9. A device for loading a catalyst according to claim 1, characterized in that the cable is made of kapron.

Images