Chlorination process titanium dioxide waste acid recycling box

Abstract

The utility model relates to the technical field of waste acid recovery, and discloses a chlorination process titanium dioxide waste acid recovery circulating box which comprises a box body, a quantitative feeding assembly is arranged on the edge of the box body, a filtering assembly is arranged at the bottom of the box body, and a feeding port is connected to the side wall of the box body. The quantitative feeding assembly comprises a liquid adding box, an electric push rod is arranged at the top of the liquid adding box, the output end of the electric push rod is connected with a connecting rod, a piston is slidably arranged in the liquid adding box, the bottom of the connecting rod extends into the liquid adding box to be connected with the piston, and a liquid adding box liquid inlet pipe and a liquid adding box liquid outlet pipe are arranged on the left side and the right side of the liquid adding box correspondingly. The right end of the liquid adding box liquid outlet pipe is connected with the box body in a penetrating mode, and a control assembly is arranged on the connecting rod. The filtering assembly comprises a filtering box, a filtering plate is arranged in the filtering box, and a lifting assembly is connected to the filtering plate. Quantitative feeding of the liquid adding box is achieved, full reaction in the box body is guaranteed, recycling is more thorough, operation is easy and efficient, and recycling efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of waste acid recovery, in particular to a waste acid recovery circulation tank for chloride process titanium dioxide. Background Technique

[0002] At present, there are only two process technologies for the production of titanium dioxide, namely the sulfuric acid process and the chloride process. However, the prices of the finished products produced by the two are quite different (several thousand yuan per ton). Sulfuric acid process titanium dioxide not only has low value but also has narrow uses. Titanium dioxide is mainly used in the production of coatings (about 60%). For coatings with high weather resistance requirements such as automotive paints and exterior wall coatings, only chloride process titanium dioxide can be used.

[0003] The processing of titanium dioxide will generate a large amount of waste acid. The main process of waste acid recovery is as follows: using the waste acid from chloride process titanium dioxide as raw material, filtering to remove solid impurities to obtain a filtrate, removing sulfate ions with barium chloride solution, and passing through an iron removal resin to obtain a titanium-containing hydrochloric acid solution; adding a phosphoric acid solution to the titanium-containing hydrochloric acid solution to obtain a solid-liquid mixture, filtering for solid-liquid separation, the obtained liquid phase is HCl solution, and the obtained solid phase is washed with deionized water and dried to obtain titanium phosphate. This method can effectively recycle hydrochloric acid and titanium elements in the waste acid. The recycled hydrochloric acid can be directly used as the hydrochloric acid used in the post-treatment process of chloride process titanium dioxide for film coating, or can also be directly used as the washing liquid for enterprises such as power plants to replace industrial-grade hydrochloric acid; the generated titanium phosphate can be used as a white pigment or a flame retardant, avoiding waste of resources and environmental pollution. However, the existing recovery equipment has the following problems: incomplete recovery, and a large amount of acidic ions still remain in the residual liquid; insufficient filtration, and the solution and solid phase cannot be completely separated.

[0004] Therefore, those skilled in the art urgently need to develop a waste acid recovery circulation tank for chloride process titanium dioxide. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and provide a waste acid recovery circulation tank for chloride process titanium dioxide.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A hydrochlorination process titanium white waste acid recovery circulation tank, including a tank body, a quantitative feeding assembly is arranged on the side of the tank body, a filtering assembly is arranged at the bottom of the tank body, and a feeding port and a cleaning port are connected to the side wall of the tank body; the quantitative feeding assembly includes a liquid adding tank, an electric push rod is arranged on the top of the liquid adding tank, the output end of the electric push rod is connected with a connecting rod, a piston is slidably arranged inside the liquid adding tank, the bottom of the connecting rod extends into the liquid adding tank and is connected with the piston, a liquid adding tank inlet pipe and a liquid adding tank outlet pipe are respectively arranged on the left and right sides of the liquid adding tank, the right end of the liquid adding tank outlet pipe is connected to the tank body through penetration, and a control assembly is arranged on the connecting rod; the filtering assembly includes a filtering tank, a filtering plate is arranged inside the filtering tank, and a lifting assembly is connected to the filtering plate.

[0007] Preferably, the control assembly includes a limiting block, the limiting block is fixedly connected to the upper right of the connecting rod, brackets are arranged around the connecting rod, the electric push rod is fixedly connected to the brackets, and a plurality of positioning holes are opened on the right side of the brackets, and a positioning plug is slidably arranged in the positioning holes.

[0008] Preferably, the lifting assembly includes a second motor, the second motor is connected to the outer wall of the filtering tank, the filtering plate is slidably and sealingly connected between the filtering tank, a pulling rope is connected to the top of the filtering plate, and pulleys are respectively arranged above the left and right of the filtering tank, and the top of the pulling rope is connected to the second motor through the pulleys.

[0009] Preferably, the filtering tank is communicated with the tank body through a connecting pipe, a drain pipe is connected to the bottom of the filtering tank, and control valves are arranged on the connecting pipe and the cleaning port.

[0010] Preferably, a stirring assembly is arranged inside the tank body, the stirring assembly includes a rotating shaft, the rotating shaft is rotatably connected to the tank body, stirring rods are arranged on the rotating shaft, the top of the rotating shaft extends outside the tank body and is connected to a first motor, and the first motor is fixedly connected to the tank body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, according to the waste acid capacity inside the tank body, the control assembly on the liquid adding tank is adjusted, the positioning plug is inserted into the corresponding positioning hole, and during the process of the electric push rod driving the connecting rod to move downwards, interference occurs between the limiting block and the positioning plug, thereby preventing the connecting rod from moving downwards, so as to realize the quantitative feeding of the liquid adding tank, ensure full reaction inside the tank body, and make the recovery more thorough.

[0013] 2. In the present utility model, through the rotation of the second motor, the pulling rope is contracted, and then the filter plate is lifted through the pulley, so as to separate the solid sediment inside the filter tank from the solution. The operation is simple and efficient, with a high recovery efficiency. It can effectively speed up the separation of waste acid, save time and effectively improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural sectional view of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of the structure at A in

[0016] Figure 3 is a structural diagram of the filter tank of the present utility model.

[0017] In the figure: 1 - box body; 11 - feed inlet; 12 - rotating shaft; 13 - stirring rod; 14 - first motor; 15 - cleaning port; 2 - liquid adding tank; 21 - electric push rod; 22 - bracket; 23 - connecting rod; 24 - positioning hole; 25 - positioning plug; 26 - limiting block; 27 - liquid adding tank inlet pipe; 28 - piston; 29 - liquid adding tank outlet pipe; 3 - filter tank; 31 - connecting pipe; 32 - drain pipe; 33 - filter plate; 34 - pulling rope; 35 - pulley; 36 - second motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be clearly described below in conjunction with the drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model and does not serve as a limitation to the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present utility model.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] Please refer to Figures 1-3 , the present utility model provides an embodiment: a hydrochloric acid process titanium dioxide waste acid recovery circulation tank, including a tank body 1, a quantitative feeding assembly is arranged on the side of the tank body 1, a filtering assembly is arranged at the bottom of the tank body 1, and a feed inlet 11 and a cleaning port 15 are connected to the side wall of the tank body 1; the quantitative feeding assembly includes a liquid adding tank 2, an electric push rod 21 is arranged on the top of the liquid adding tank 2, the output end of the electric push rod 21 is connected with a connecting rod 23, a piston 28 is slidably arranged inside the liquid adding tank 2, the bottom of the connecting rod 23 extends into the liquid adding tank 2 and is connected with the piston 28, a liquid adding tank inlet pipe 27 and a liquid adding tank outlet pipe 29 are respectively arranged on the left and right sides of the liquid adding tank 2, the right end of the liquid adding tank outlet pipe 29 is connected to the tank body 1 through penetration, and a control assembly is arranged on the connecting rod 23; the filtering assembly includes a filtering tank 3, a filter plate 33 is arranged inside the filtering tank 3, and a lifting assembly is connected to the filter plate 33.

[0022] Further, the control assembly includes a limiting block 26, the limiting block 26 is fixedly connected to the upper right of the connecting rod 23, a support 22 is arranged around the connecting rod 23, the electric push rod 21 is fixedly connected to the support 22, a plurality of positioning holes 24 are opened on the right side of the support 22, a positioning plug 25 is slidably arranged in the positioning holes 24, according to the waste acid capacity inside the tank body 1, the control assembly on the liquid adding tank 2 is adjusted, the positioning plug 25 is inserted into the corresponding positioning hole 24, the electric push rod 21 drives the connecting rod 23 to move downwards, during the process of the connecting rod 23 moving downwards, interference is generated between the limiting block 26 and the positioning plug 25 connected to the connecting rod 23, thereby preventing the connecting rod 23 from moving downwards, so as to realize the quantitative feeding of the liquid adding tank 2; the bottom of the connecting rod 23 is connected with the piston 28, and a quantitative reaction liquid is added to the tank body 1 through the piston 28.

[0023] Further, the lifting assembly includes a second motor 36, which is connected to the outer wall of the filter tank 3. The filter plate 33 is slidably and sealingly connected to the filter tank 3. A pull rope 34 is connected to the top of the filter plate 33. Pulleys 35 are respectively arranged above the left and right sides of the filter tank 3. The top of the pull rope 34 is connected to the second motor 36 through the pulleys 35. The filter tank 3 is connected to the box body 1 through a connecting pipe 31. A drain pipe 32 is connected to the bottom of the filter tank 3. Control valves are arranged on the connecting pipe 31 and the cleaning port 15. By rotating the second motor 36, the pull rope 34 is contracted, and then the filter plate 33 is lifted through the pulleys 35, so as to separate the solid sediment in the filter tank 3 from the solution. The operation is simple and efficient. Through the cleaning port 15, the bottom of the box body 1 can be cleaned regularly.

[0024] Further, a stirring assembly is arranged inside the box body 1. The stirring assembly includes a rotating shaft 12, which is rotatably connected to the box body 1. Stirring rods 13 are arranged on the rotating shaft 12. The top of the rotating shaft 12 extends outside the box body 1 and is connected to a first motor 14. The first motor 14 is fixedly connected to the box body 1. By rotating the first motor 14, the first motor 14 drives the stirring rods 13 to rotate through the rotating shaft 12, and the stirring rods 13 stir the solution inside the box body 1, ensuring that the solution reaction inside the box body 1 is more sufficient.

[0025] The working principle of the present utility model: When the present utility model is in use, the staff first adds the waste acid solution into the filter tank 3 for preliminary filtration, starts the second motor 36. By rotating the second motor 36, the pull rope 34 is contracted, and then the filter plate 33 is lifted through the pulleys 35, so as to separate the solid sediment in the filter tank 3 from the solution. The separated solution enters the box body 1 through the feed port 11. At the same time, a reaction solution to be reacted (such as barium chloride / iron removal resin / phosphoric acid solution, etc.) is added into the liquid adding tank 2 through the liquid adding tank inlet pipe 27. According to the waste acid capacity inside the box body 1, the control assembly on the liquid adding tank 2 is adjusted, and the positioning plug board 25 is inserted into the corresponding positioning hole 24. The electric push rod 21 drives the connecting rod 23 to move downward. During the downward movement of the connecting rod 23, the limiting block 26 and the positioning plug board 25 connected to the connecting rod 23 interfere, thereby preventing the downward movement of the connecting rod 23, so as to realize the quantitative feeding of the liquid adding tank 2. The bottom of the connecting rod 23 is connected to the piston 28, and a quantitative reaction liquid is added into the box body 1 through the piston 28. By rotating the first motor 14, the first motor 14 drives the stirring rods 13 to rotate through the rotating shaft 12, and the stirring rods 13 stir the solution inside the box body 1, ensuring that the solution reaction inside the box body 1 is more sufficient. After the reaction, the liquid is transported to the filter tank 3 through the connecting pipe 31 for circulating filtration, so as to recycle the waste acid.

[0026] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A recycling box for recycling waste acid of titanium dioxide produced by a chloride process, comprising a box body (1), characterized in that: A quantitative feeding component is provided on the side of the box (1), a filtering component is provided at the bottom of the box (1), and a feed port (11) and a cleaning port (15) are connected to the side wall of the box (1); The quantitative feeding assembly comprises a liquid adding box (2), the top of the liquid adding box (2) is provided with an electric push rod (21), the output end of the electric push rod (21) is connected to a connecting rod (23), a piston (28) is slidably arranged inside the liquid adding box (2), the bottom of the connecting rod (23) extends to the inside of the liquid adding box (2) and is connected to the piston (28), the left and right sides of the liquid adding box (2) are respectively provided with a liquid adding box liquid inlet pipe (27) and a liquid adding box liquid outlet pipe (29), the right end of the liquid adding box liquid outlet pipe (29) is connected to the box body (1), and a control assembly is provided on the connecting rod (23); The filter assembly comprises a filter box (3), a filter plate (33) is provided inside the filter box (3), and a lifting assembly is connected to the filter plate (33).

2. A chloride process titanium dioxide waste acid recovery circulation box according to claim 1, characterized in that: The control assembly comprises a limit block (26), the limit block (26) is fixedly connected to the upper right side of the connecting rod (23), a bracket (22) is arranged around the connecting rod (23), the electric push rod (21) is fixedly connected to the bracket (22), a plurality of positioning holes (24) are opened on the right side of the bracket (22), and a positioning plug plate (25) is slidably arranged in the positioning hole (24).

3. A chloride process titanium dioxide waste acid recovery and circulation box according to claim 1, characterized in that: The lifting assembly comprises a second motor (36), the second motor (36) is connected to the outer wall of the filter box (3), the filter plate (33) is slidably and sealedly connected to the filter box (3), the top of the filter plate (33) is connected to a pull rope (34), and pulleys (35) are respectively provided on the upper left and right sides of the filter box (3), and the top of the pull rope (34) is connected to the second motor (36) through the pulley (35).

4. A recycling box for recycling waste acid of titanium dioxide produced by chloride process according to claim 3, characterized in that: The filter box (3) is connected to the box body (1) via a connecting pipe (31); a drain pipe (32) is connected to the bottom of the filter box (3); and control valves are provided on the connecting pipe (31) and the cleaning port (15).

5. A recycling box for recycling waste acid of titanium dioxide produced by chloride process according to claim 1, characterized in that: A stirring assembly is provided inside the housing (1), the stirring assembly comprising a rotating shaft (12), the rotating shaft (12) being rotatably connected to the housing (1), a stirring rod (13) being provided on the rotating shaft (12), the top of the rotating shaft (12) extending outside the housing (1) and connected to a first motor (14), the first motor (14) being fixedly connected to the housing (1).

Images