CN210332631U

CN210332631U - A non-metallic lining stirred tank for in catalyst production

Info

Publication number: CN210332631U
Application number: CN201921012510.5U
Authority: CN
Inventors: 邓春华; 唐金沙; 彭霞
Original assignee: Changling Petro Chemical Engineering Design Co ltd
Current assignee: Changling Petro Chemical Engineering Design Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-17
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a non-metallic lining stirred tank for in catalyst production, including mixing system, the barrel and the lower cone that are linked together. The top of the cylinder body is provided with a top cover. The stirring system passes through the top cover and extends into the lower cone. A plurality of baffles are uniformly distributed on the inner side wall of the cylinder body in the circumferential direction. The bottom of the lower cone is provided with a flange. The bottom flange cover is connected with the flange through a gasket, a flat washer and at least four bolts. The lower cone is provided with a supporting part. The cylinder includes a first carbon steel layer and a first non-metallic liner. The lower cone includes a second carbon steel layer and a second non-metallic liner. The utility model solves the corrosion problem of the stirring kettle by utilizing the acid and alkali resistance of the non-metallic material; the cost is low, and meanwhile, the long-period operation of the stirring kettle can be ensured; a cylindrical rotary area in the center of the stirring kettle can be eliminated in a turbulent flow state; the operating medium can be ensured not to leak; the problem of prior art stirred tank bottom do not support well has been solved well.

Description

A non-metallic lining stirred tank for in catalyst production

Technical Field

The invention relates to the technical field of chemical industry, in particular to a stirring kettle with a non-metal lining for catalyst production.

Background

At present, the process raw materials of domestic catalyst production devices comprise various forms such as blocks, powder and liquid, and the process raw materials in various forms need to be uniformly mixed by a stirring kettle. However, the raw materials of the catalyst production device are also highly corrosive, such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, etc., carbon steel and austenitic stainless steel are difficult to resist the corrosivity, and in order to ensure the long-term safe operation of the production device, expensive materials such as titanium, zirconium, hastelloy, etc. may be needed to manufacture the stirred tank, so that the investment cost is extremely high.

The upper part of the existing stirring kettle is cylindrical, the lower part of the existing stirring kettle is elliptical, the bottom of the existing stirring kettle is free of a supporting structure, and the existing stirring kettle is supported only by the elliptical seal head at the lower part, so that a non-metal layer on the elliptical seal head is easily damaged, the device is damaged, and the production efficiency of a catalyst is also seriously influenced; and the sealing effect of the bottom of the existing stirring kettle is not good generally.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a non-metal lining stirring kettle for catalyst production, which can greatly reduce the manufacturing cost, ensure the long-period safe operation of the device, and has better support and good bottom sealing effect, aiming at the defects of the prior art.

A non-metal lining stirring kettle for catalyst production comprises a stirring system, a barrel body and a lower cone body which are communicated. The barrel sets up the top at cone down, and the top of barrel is equipped with the top cap. The stirring system passes through the top cover and extends into the lower cone. A plurality of baffles are uniformly distributed in the circumferential direction on the inner side wall of the barrel body, each baffle is in a long strip shape, and each baffle is vertically arranged on the inner side wall of the barrel body. The bottom of the lower cone is provided with a flange. The bottom flange cover is connected with the flange through a gasket, a flat washer and at least four bolts. The lower cone is provided with a supporting part which is a skirt support or an ear support.

The barrel includes first carbon steel layer and the first non-metallic lining that sets gradually from outside to inside, and the internal surface of first non-metallic lining and first carbon steel layer is closely laminated.

The lower cone comprises a second carbon steel layer and a second non-metal lining which are sequentially arranged from outside to inside, and the second non-metal lining is tightly attached to the second carbon steel layer.

In one embodiment, the top cover is provided with a first feed inlet, a second feed inlet and a feed pipe hole which are communicated with the interior of the cylinder. The feed pipe penetrates through the feed pipe hole and extends into the lower part in the cylinder body. The side wall of the lower part of the cylinder body is provided with a first discharge hole and a second discharge hole which are communicated with the inside of the cylinder body, and the bottom flange cover is provided with a third discharge hole which is communicated with the inside of the lower cone body.

The first feed inlet is provided with a first valve, the second feed inlet is provided with a second valve, the first discharge outlet is provided with a third valve, the second discharge outlet is provided with a fourth valve, and the third discharge outlet is provided with a fifth valve.

In one embodiment, the stirring system comprises a motor, a speed reducer, a stirring shaft, a coupling and a group of stirring paddles.

The motor is connected with the speed reducer. An output shaft of the speed reducer penetrates through the top cover to extend into the cylinder body and is connected with the stirring shaft through the coupler. A group of stirring paddles is arranged on the stirring shaft.

The stirring paddle can be a paddle type stirring paddle, or a turbine type stirring paddle, or a propelling type stirring paddle, or a Bruman type stirring paddle, or a toothed blade type stirring paddle, or an anchor type stirring paddle, or a frame type stirring paddle, or a helical ribbon type stirring paddle, or a screw type stirring paddle.

The stirring shaft, the stirring paddle, the coupler and the bottom flange cover are all made of austenitic stainless steel.

In one embodiment, the lower cone and the cylinder are connected in a welding mode, and a plurality of reinforcing rib plates are arranged at the welding position along the circumferential direction.

The top cover and the cylinder body can be arranged in a welding mode or in a fastener connecting mode.

In one embodiment, the baffle, the top cover, the supporting part and the flange are all made of carbon steel, and the outer surfaces of the baffle and the flange are provided with at least one non-metallic material layer.

In one embodiment, the top cover is provided with 1-2 manholes, so that the stirring system is convenient to install and overhaul.

In one embodiment, the gasket is a non-metallic gasket resistant to corrosion by the medium.

The invention has the advantages and beneficial effects that:

1. the first carbon steel layer and the second carbon steel layer are low in price and meet the requirements of the stirring kettle on strength and rigidity; the design of the first non-metal lining and the second non-metal lining solves the corrosion problem of the stirring kettle by utilizing the acid and alkali resistance of non-metal materials; the cost is low, and the long-period operation of the stirring kettle can be ensured.

2. The design of the baffle plate can eliminate a cylindrical rotary area in the center of the stirring kettle in a turbulent flow state.

3. The gasket is clamped by the bolts and the flat bottom ring, so that the sealing between the bottom flange cover and the flange is well ensured, and the operating medium can be prevented from leaking.

4. The design of the supporting part of the invention well solves the problem that the bottom of the stirring kettle in the prior art is not easy to support.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

In order to facilitate an understanding of the invention, a full description thereof will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 1 and 2, a non-metal lined stirred tank for catalyst production comprises a stirring system, a cylinder 1 and a lower cone 2 which are communicated with each other.

Wherein, barrel 1 sets up at the top of cone 2 down, and the top of barrel 1 is equipped with top cap 3.

In particular, the stirring system extends through the top cover 3 into the lower cone 2. A plurality of baffles 4 are uniformly distributed in the circumferential direction on the inner side wall of the barrel 1, and each baffle 4 is in a long strip shape and is vertically arranged on the inner side wall of the barrel 1. The bottom of the lower cone 2 is provided with a flange 5. The bottom flange cover 6 is connected to the flange 5 by means of a gasket 7, a flat washer 8, at least four bolts 9. The lower cone 2 is provided with a support part, which in this embodiment 1 is a skirt 10.

Wherein, barrel 1 includes first carbon steel layer 11 and the first non-metallic lining 12 that sets gradually from outside to inside, and first non-metallic lining 12 is closely laminated with the internal surface on first carbon steel layer 11.

Wherein, the lower cone 2 comprises a second carbon steel layer 13 and a second non-metal lining 14 which are arranged from outside to inside in sequence, and the second non-metal lining 14 is tightly attached to the second carbon steel layer 13.

Specifically, the top cover 3 is provided with a first feed inlet 15, a second feed inlet 16 and a feed pipe hole 17 which are communicated with the interior of the cylinder 1. A feed pipe 18 extends through the feed pipe aperture 17 into the lower part of the interior of the bowl 1. The side wall of the lower part of the cylinder body 1 is provided with a first discharge hole 19 and a second discharge hole 20 which are communicated with the inside of the cylinder body 1, and the bottom flange cover 6 is provided with a third discharge hole 21 which is communicated with the inside of the lower cone body 2. The first inlet 15 is provided with a first valve, the second inlet 16 is provided with a second valve, the first outlet 19 is provided with a third valve, the second outlet 20 is provided with a fourth valve, and the third outlet 21 is provided with a fifth valve. (the first valve, the second valve, the third valve, the fourth valve and the fifth valve are not shown in FIG. 1)

The stirring system comprises a motor 22, a speed reducer 23, a stirring shaft 24, a coupling 25 and a group of stirring paddles 26.

Specifically, the motor 22 is connected to a speed reducer 23. An output shaft of the speed reducer 23 penetrates through the top cover 3, extends into the barrel body 1 and is connected with the stirring shaft 24 through a coupler 25. The stirring shaft 24 is provided with a group of stirring paddles 26.

The paddle 26 is a paddle type paddle in this embodiment 1.

Specifically, the stirring shaft 24, the stirring paddle 26, the coupler 25 and the bottom flange cover 6 are all made of austenitic stainless steel.

Wherein, the connection mode of the lower cone 2 and the cylinder 1 is welding, and a plurality of reinforcing rib plates are arranged at the welding position along the circumferential direction.

Specifically, in this embodiment 1, the top cover 3 and the cylinder 1 are welded together.

Specifically, the baffle 4, the top cover 3, the flange 5 and the supporting part are all made of carbon steel, and at least one non-metal material layer 27 is arranged on the outer surfaces of the flange 5 and the baffle 4. Be equipped with 1 ~ 2 manholes on the top cap 3, make things convenient for mixing system's installation and maintenance. The gasket 7 is a non-metal soft gasket which resists medium corrosion.

Working principle and working process of the invention

Firstly, the third valve, the fourth valve and the fifth valve are closed, the process raw materials enter the cylinder body 1 through the first feeding hole 15, the second feeding hole 16 and the feeding pipe 18 respectively, the motor 22 is started, the stirring shaft 24 drives the stirring paddle 26 to rotate, the raw materials are uniformly mixed, the motor 22 is closed after the raw materials are uniformly mixed, the third valve, the fourth valve and the fifth valve are opened, and the mixed materials are discharged through the first discharging hole 19, the second discharging hole 20 and the third discharging hole 21 respectively.

The invention has the advantages and beneficial effects that:

1. the first carbon steel layer 11 and the second carbon steel layer 13 are low in price and can meet the requirements of the stirring kettle on strength and rigidity; the design of the first non-metal lining 12 and the second non-metal lining 14 solves the corrosion problem of the stirring kettle by utilizing the characteristics of acid resistance and alkali resistance of non-metal materials; the cost is low, and the long-period operation of the stirring kettle can be ensured.

2. The design of the baffle 4 of the invention can eliminate a cylindrical revolution area at the center of the stirring kettle in a turbulent flow state.

3. The gasket 7 is clamped by the bolts 9 and the flat bottom ring 8, so that the sealing between the bottom flange cover 6 and the flange 5 is well ensured, and the operating medium can be prevented from leaking.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A non-metal lining stirring kettle used in catalyst production is characterized by comprising a stirring system, a barrel body and a lower cone body which are communicated, wherein the barrel body is arranged at the top of the lower cone body;

the cylinder body comprises a first carbon steel layer and a first non-metal lining which are sequentially arranged from outside to inside, and the first non-metal lining is tightly attached to the inner surface of the first carbon steel layer;

2. The non-metal lining stirred tank used in catalyst production according to claim 1, wherein the top cap is provided with a first feed port, a second feed port and a feed pipe hole which are communicated with the inside of the cylinder, the feed pipe penetrates through the feed pipe hole and extends into the lower part of the cylinder, the side wall of the lower part of the cylinder is provided with a first discharge port and a second discharge port which are communicated with the inside of the cylinder, and the bottom flange cover is provided with a third discharge port which is communicated with the inside of the lower cone;

3. The non-metal lined stirred tank for catalyst production according to claim 1, wherein the stirring system comprises a motor, a speed reducer, a stirring shaft, a coupling, a set of stirring paddles;

the motor is connected with the speed reducer, an output shaft of the speed reducer penetrates through the top cover to extend into the cylinder body and is connected with the stirring shaft through the coupler, and the stirring shaft is provided with a group of stirring paddles;

the stirring paddle is a paddle type stirring paddle, or a turbine type stirring paddle, or a propelling type stirring paddle, or a Bruman type stirring paddle, or a toothed blade type stirring paddle, or an anchor type stirring paddle, or a frame type stirring paddle, or a helical ribbon type stirring paddle, or a screw type stirring paddle;

4. The stirring kettle with the non-metallic lining for the production of the catalyst according to claim 1, wherein the lower cone and the cylinder are connected by welding, and a plurality of reinforcing rib plates are arranged at the welding position along the circumferential direction;

the top cover and the cylinder body are arranged in a welding mode or a fastening piece connecting mode.

5. The non-metallic lined stirred tank for catalyst production as recited in claim 1, wherein the baffle, the top lid, the support portion and the flange are made of carbon steel, and the outer surfaces of the baffle and the flange are provided with at least one non-metallic material layer.

6. The non-metal lined stirring tank for catalyst production according to claim 1, wherein the top cover is provided with 1-2 manholes, so that the stirring system is convenient to install and maintain.

7. The non-metal lined stirred tank for use in catalyst production of claim 1, wherein said gasket is a non-metal soft gasket resistant to media corrosion.