Film coating tank for titanium dioxide production

Abstract

The invention discloses a coating tank for titanium dioxide production, which comprises a tank body, the top of the tank body is provided with a feed inlet, a stirrer is mounted at the top of the tank body and extends into the tank body, the lower end of the side wall of the tank body is provided with a discharge outlet, at least two steam heaters uniformly distributed along the circumference are arranged above the discharge outlet, and the discharge outlet is communicated with the tank body. The steam heater comprises a mounting flange, a bent pipe, a nozzle and a connector flange used for being connected with an external steam pipeline, the mounting flange is arranged on the bent pipe in a sleeving mode and connected with the side wall of the tank body, the bent pipe extends into the tank body and inclines in the stirring direction, and an inlet and an outlet of the bent pipe are connected with the connector flange and the nozzle respectively. The steam heater is arranged at the lower end of the side part of the tank body, and the bent pipe is inclined towards the stirring direction, so that the heating uniformity and heat are effectively improved, the stirring strength is improved, the material consumption of the steam heater is reduced, and the steam heater is convenient to disassemble and assemble by adopting a side surface mounting mode of the tank body.

Description

Technical Field

[0001] The invention relates to the technical field of chloride process titanium dioxide production, in particular to a coating tank used for titanium dioxide production. Background Art

[0002] The coating tank is a key post-processing equipment for the production of titanium dioxide in the chloride process of titanium dioxide production. Different products have different surface treatment formulas and processes. Generally, the surface treatment is carried out after uniform heating to the process temperature to uniformly coat the inorganic oxide on the surface of titanium dioxide particles to achieve the production process required to improve the weather resistance, dispersibility and hiding power of titanium dioxide products and other pigment performance requirements.

[0003] The heater of the surface treatment equipment is generally installed on the top of the tank and extends deep into the tank. A separate support frame needs to be added inside the tank. There is greater vibration during production, installation and disassembly are inconvenient, and the lifespan is short. This has a certain impact on product quality and the output of unit equipment. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a coated tank for titanium dioxide production, which is used to solve the problems of uneven heating, inconvenient installation, easy wear and corrosion of the steam heater of the coated tank.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a coated tank for titanium dioxide production, comprising a tank body, a feed port is opened at the top of the tank body, an agitator is installed on the top of the tank body and extends into the inside of the tank body, a discharge port is opened at the lower end of the side wall of the tank body, and at least two steam heaters evenly distributed along the circumference are arranged above the discharge port, the steam heater comprises a mounting flange, a bent pipe, a nozzle and an interface flange for connecting to an external steam pipe, the mounting flange is sleeved on the bent pipe and connected to the side wall of the tank body, the bent pipe extends into the inside of the tank body and is inclined in the stirring direction, and the inlet and outlet of the bent pipe are respectively connected to the interface flange and the nozzle.

[0006] The nozzle is connected with the diffusion pipe.

[0007] The number of the steam heaters is 4.

[0008] The steam heater is made of 2507 duplex steel.

[0009] The agitator comprises a motor, a rotating shaft and a plurality of rotating blades. The rotating shaft is vertically arranged at the inner center of the tank body. The motor is arranged at the top of the tank body and is drivingly connected to the rotating shaft. The plurality of rotating blades are arranged on the rotating shaft at equal intervals.

[0010] Beneficial effects of the invention: Compared with the prior art, the present invention effectively improves heating uniformity and heat, increases stirring intensity, and reduces the amount of steam heater material by installing a steam heater at the lower end of the tank side and tilting the curved pipe in the stirring direction. At the same time, the tank side installation method is adopted to facilitate the disassembly and installation of the steam heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the steam heater of the present invention; In the figure: 1. tank body; 2. feed inlet; 3. discharge outlet; 4. agitator; 5. steam heater; 41. motor; 42. rotating shaft; 43. rotating blades; 51. mounting flange; 52. elbow; 53. nozzle; 54. interface flange; 55. diffusion tube. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0013] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments. Example

[0014] like Figure 1 to Figure 2 As shown, the present invention provides a coated tank for titanium dioxide production, including a tank body 1, a feed port 2 is provided on the top of the tank body 1, an agitator 4 is installed on the top of the tank body 1 and extends into the tank body 1, a discharge port 3 is provided at the lower end of the side wall of the tank body 1, and at least two steam heaters 5 evenly distributed along the circumference are provided above the discharge port 3, the steam heater 5 includes a mounting flange 51, a bend 52, a nozzle 53 and an interface flange 54 for connecting to an external steam pipeline, the mounting flange 51 is sleeved on the bend 52 and connected to the side wall of the tank body 1, the bend 52 extends into the tank body 1 and is inclined in the stirring direction, and the inlet and outlet of the bend 52 are respectively connected to the interface flange 54 and the nozzle 53.

[0015] By installing the steam heater 5 at the lower end of the side of the tank body 1 and tilting the curved pipe 51 in the stirring direction, the heating uniformity and heat are effectively improved, the stirring intensity is increased, and the material consumption of the steam heater 5 is reduced. At the same time, the side installation method of the tank body 1 is adopted to facilitate the disassembly and installation of the steam heater 5.

[0016] Specifically, the number of the steam heaters 5 is 4, and the nozzle 53 is connected to the diffusion tube 55. By increasing the number of steam heaters 5 and using the diffusion tube 55 to increase the contact area between the steam and the titanium dioxide slurry inside the tank body, the heating uniformity and heating speed of the titanium dioxide in the coating tank are improved.

[0017] Specifically, the steam heater 5 is made of 2507 dual-phase steel, which has the characteristics of wear resistance and chloride ion corrosion resistance, and can increase the service life of the steam heater 5 and reduce equipment costs.

[0018] Specifically, the agitator 4 includes a motor 41, a rotating shaft 42 and a plurality of rotating blades 43. The rotating shaft 42 is vertically arranged at the center of the tank body 1. The motor 41 is arranged on the top of the tank body 1 and is drivingly connected to the rotating shaft 42. The plurality of rotating blades 43 are evenly spaced on the rotating shaft 42.

[0019] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A coated tank for titanium dioxide production, comprising a tank body (1), characterized in that: The tank body (1) has a feed inlet (2) at the top, an agitator (4) is mounted on the top of the tank body (1) and extends into the tank body (1), a discharge port (3) is disposed at the lower end of the side wall of the tank body (1), and at least two steam heaters (5) are arranged above the discharge port (3) and are evenly distributed along the circumference. The steam heater (5) comprises a mounting flange (51), a curved pipe (52), a nozzle (53), and an interface flange (54) for connecting to an external steam pipeline. The mounting flange (51) is sleeved on the curved pipe (52) and connected to the side wall of the tank body (1). The curved pipe (52) extends into the tank body (1) and is inclined in the stirring direction. The inlet and outlet of the curved pipe (52) are respectively connected to the interface flange (54) and the nozzle (53).

2. The coated tank for titanium dioxide production according to claim 1, characterized in that: The nozzle (53) is connected to the diffusion pipe (55).

3. The coated tank for titanium dioxide production according to claim 1, characterized in that: The number of the steam heaters (5) is 4.

4. The coated tank for titanium dioxide production according to claim 1, characterized in that: The steam heater (5) is made of 2507 duplex steel.

5. The coated tank for titanium dioxide production according to claim 1, characterized in that: The stirrer (4) comprises a motor (41), a rotating shaft (42) and a plurality of rotating blades (43); the rotating shaft (42) is vertically arranged at the center of the tank body (1); the motor (41) is arranged at the top of the tank body (1) and is drivingly connected to the rotating shaft (42); and the plurality of rotating blades (43) are arranged on the rotating shaft (42) at equal intervals.

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