Sulfuric acid process titanium dioxide waste acid concentration device

Abstract

The utility model provides a sulfuric acid process titanium dioxide waste acid concentration device, which belongs to the technical field of sulfuric acid process titanium dioxide waste acid concentration, and comprises a bearing frame and a filter box fixedly connected to the top wall of the bearing frame, the top wall of the bearing frame is fixedly connected with a condensing box, and the inner wall of the condensing box is connected with a centrifugal rotating part used for improving sulfuric acid concentration efficiency. Wherein the centrifugal rotating part comprises a filtering barrel rotationally connected to the interior of the condensing box, a shielding ring is connected to the outer wall of the filtering barrel, a gear ring is fixedly connected to the top wall of the filtering barrel, a supporting frame is fixedly connected to the outer wall of the filtering barrel, a driving motor is fixedly connected to the bottom wall of the supporting frame, and a gear is fixedly connected to the output end of the driving motor and meshed with the gear ring; the inner wall of the filter box is connected with the distillation part for improving the purity of the extracted sulfuric acid, the sulfuric acid which is not condensed into crystals can be separated through rotation of the filter barrel, the operation convenience is improved, and repeated extraction of the sulfuric acid can be realized under the action of the heater, so that the purity of the extracted sulfuric acid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid process titanium dioxide waste acid concentration, in particular to a sulfuric acid process titanium dioxide waste acid concentration device. Background Art

[0002] Titanium dioxide is an important inorganic chemical pigment, the main component of which is titanium dioxide. Titanium dioxide is used in coatings, inks, papermaking, plastics and rubber, chemical fibers, ceramics and other industries. There are two production processes for titanium dioxide: sulfuric acid process and chlorination process. The advantages of chlorination process are short process, easy expansion of production capacity, high degree of continuous automation, relatively low energy consumption, and less waste; but its disadvantages are large investment, complex equipment structure, high requirements for materials, high temperature resistance, corrosion resistance, difficult maintenance of equipment, and great difficulty in research and development. The sulfuric acid method can use cheap and easily available ilmenite and sulfuric acid as raw materials, with mature technology, simple equipment, and easy to solve the problem of anti-corrosion materials. However, in the production process of titanium dioxide by sulfuric acid method, 4 tons of waste sulfuric acid will be generated for every ton of titanium dioxide produced. The waste sulfuric acid generally contains 20-25% sulfuric acid, 9-13% ferrous sulfate, and a small amount of sulfates such as calcium, magnesium, and aluminum. If the waste sulfuric acid is not recycled and reused, it will cause a waste of resources, and direct discharge will also cause serious environmental pollution. In order to reuse this part of waste sulfuric acid in production, a concentration device is needed.

[0003] However, the prior art still has the following deficiencies: 1. During the crystallization process of sulfuric acid, due to the supercooling of sulfuric acid and possible impurities, the process of completely condensing into crystals is relatively complicated, which makes it difficult to effectively separate the sulfuric acid that is not completely condensed, thereby increasing the complexity of the operation; 2. When distilling and purifying sulfuric acid, due to the low relative volatility between sulfuric acid and water, especially at high concentrations, the presence of water will reduce the distillation efficiency of sulfuric acid, making it difficult to remove water from the mixture, resulting in low refining purity.

[0004] Therefore, a sulfuric acid process titanium dioxide waste acid concentration device is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that in the current sulfuric acid crystallization process, the process of completely condensing into crystals is relatively complicated due to the supercooling phenomenon of sulfuric acid and possible impurities, which makes it difficult to effectively separate the sulfuric acid that is not completely condensed, thereby increasing the complexity of operation; when sulfuric acid is distilled and purified, due to the low relative volatility between sulfuric acid and water, especially at high concentrations, the presence of water will reduce the distillation efficiency of sulfuric acid, making it difficult to remove water from the mixture, thereby resulting in a problem of low refining purity.

[0006] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0007] A sulfuric acid process titanium dioxide waste acid concentration device is provided to improve the above problems.

[0008] The specific application is as follows:

[0009] A sulfuric acid method titanium dioxide waste acid concentrating device comprises a supporting frame and a filter box fixedly connected to the top wall of the supporting frame, the top wall of the supporting frame is fixedly connected to a condensing box, the inner wall of the condensing box is connected to a centrifugal rotating component for improving the sulfuric acid concentration efficiency, wherein the centrifugal rotating component comprises a filter barrel rotatably connected to the inside of the condensing box, the outer wall of the filter barrel is connected to a shielding ring, the top wall of the filter barrel is fixedly connected to a gear ring, the outer wall of the filter barrel is fixedly connected to a supporting frame, the bottom wall of the supporting frame is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a gear, the gear is meshed with the gear ring, and the inner wall of the filter box is connected to a distillation component for improving the purity of sulfuric acid refining.

[0010] As a preferred technical solution of the present application, the distillation component includes a heater fixedly connected to the inside of the filter box, the top wall of the filter box is provided with evenly distributed filter ports, the top wall of the filter box is fixedly connected to a ventilation pipe, the top wall of the filter barrel is rotatably connected to a threaded ring, the end of the ventilation pipe away from the filter box is also rotatably connected to a mounting ring, the mounting ring is threadedly connected to the threaded ring, and the outer wall of the ventilation pipe is connected to a valve.

[0011] As a preferred technical solution of the present application, the inner wall of the filter barrel is fixedly connected with a uniformly distributed condenser, the side wall of the filter box is fixedly connected with a water pipe, the outer wall of the water pipe is fixedly connected with a water pump, and the end of the water pipe away from the filter box is also fixedly connected to the ventilation pipe.

[0012] As a preferred technical solution of the present application, a circulation pipe is fixedly connected to the bottom wall of the condensing box, and the end of the circulation pipe away from the condensing box is also fixedly connected to the filter box. The outer wall of the circulation pipe is fixedly connected to a pump body, and the condensing box, the circulation pipe and the filter box are connected.

[0013] As the preferred technical solution of the present application, the filter box, ventilation pipe, mounting ring, threaded ring and filter barrel are connected, the filter box, water pipe and ventilation pipe are connected, the inner wall of the filter box is slidably connected with a filter plate, and the top wall of the filter barrel is detachably connected with a mounting plate.

[0014] In the scheme of this application:

[0015] 1. The gear is driven by a driving motor to rotate, and the filter barrel is rotated by the action of the gear and the gear ring, and the incompletely condensed sulfuric acid is separated under the action of centrifugal force, thereby improving the refining efficiency and solving the problem in the prior art that in the sulfuric acid crystallization process, the process of completely condensing into crystals is relatively complicated due to the supercooling phenomenon of sulfuric acid and possible impurities, which makes it difficult to effectively separate the incompletely condensed sulfuric acid, thereby increasing the complexity of operation;

[0016] 2. Sulfuric acid can be repeatedly purified through the ventilation pipe, the water pipe and the circulation pipe, so as to improve the purity of the refined sulfuric acid, which is more practical and solves the problem in the prior art that when distilling and purifying sulfuric acid, due to the low relative volatility between sulfuric acid and water, especially at high concentrations, the presence of water will reduce the distillation efficiency of sulfuric acid, making it difficult to remove water from the mixture, thereby resulting in low refining purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the overall structural schematic diagrams of a sulfuric acid process titanium dioxide waste acid concentration device provided in this application;

[0018] Figure 2 The second overall structural schematic diagram of a sulfuric acid process titanium dioxide waste acid concentration device provided in this application;

[0019] Figure 3 A schematic cross-sectional structure diagram of a sulfuric acid process titanium dioxide waste acid concentration device provided in this application;

[0020] Figure 4 A sulfuric acid process titanium dioxide waste acid concentration device provided in this application Figure 3 A magnified view of the structure in the middle;

[0021] Figure 5 A sulfuric acid process titanium dioxide waste acid concentration device provided in this application Figure 3 A magnified view of the structure in middle B.

[0022] Indicated in the figure:

[0023] 100. Carrying frame; 101. Filter box; 102. Condensation box; 103. Filter barrel; 104. Shielding ring; 105. Gear ring; 106. Support frame; 107. Drive motor; 108. Gear; 110. Heater; 111. Filter port; 112. Vent pipe; 113. Threaded ring; 114. Mounting ring; 115. Condenser; 116. Water pipe; 117. Water pump; 118. Valve; 120. Circulation pipe; 121. Pump body; 122. Filter plate; 123. Mounting plate. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0025] like Figure 1-3 As shown, this embodiment proposes a sulfuric acid method titanium dioxide waste acid concentrating device, including a carrier frame 100 and a filter box 101 fixedly connected to the top wall of the carrier frame 100, the top wall of the carrier frame 100 is fixedly connected to a condensing box 102, the inner wall of the condensing box 102 is connected to a centrifugal rotating component for improving the sulfuric acid concentration efficiency, wherein the centrifugal rotating component includes a filter barrel 103 rotatably connected to the inside of the condensing box 102, the outer wall of the filter barrel 103 is connected to a shielding ring 104, the top wall of the filter barrel 103 is fixedly connected to a gear ring 105, the outer wall of the filter barrel 103 is fixedly connected to a support frame 106, the bottom wall of the support frame 106 is fixedly connected to a drive motor 107, the output end of the drive motor 107 is fixedly connected to a gear 108, the gear 108 is meshed with the gear ring 105, the inner wall of the filter box 101 is connected to a distillation component for improving the purity of sulfuric acid refining, the filter barrel 103 is rotated under the meshing action of the gear ring 105 and the gear 108, thereby improving the refining efficiency.

[0026] like Figure 1-5 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the distillation component includes a heater 110 fixedly connected to the inside of the filter box 101, the top wall of the filter box 101 is provided with evenly distributed filter ports 111, the top wall of the filter box 101 is fixedly connected with a vent pipe 112, the top wall of the filter barrel 103 is rotatably connected with a threaded ring 113, the end of the vent pipe 112 away from the filter box 101 is also rotatably connected with a mounting ring 114, the mounting ring 114 is threadedly connected to the threaded ring 113, the outer wall of the vent pipe 112 is connected with a valve 118, the vent pipe 112 can be disassembled by the action of the threaded ring 113 and the mounting ring 114, so as to improve the purity of the refining.

[0027] like Figure 1-4 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the inner wall of the filter barrel 103 is fixedly connected with evenly distributed condensers 115, the side wall of the filter box 101 is fixedly connected with a water pipe 116, the outer wall of the water pipe 116 is fixedly connected with a water pump 117, and the end of the water pipe 116 away from the filter box 101 is also fixedly connected to the ventilation pipe 112, and the condenser 115 can be used to condense and refine sulfuric acid, which is more convenient to use.

[0028] like Figure 1-3As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the bottom wall of the condensing box 102 is fixedly connected with a circulating pipe 120, the end of the circulating pipe 120 away from the condensing box 102 is also fixedly connected with the filter box 101, the outer wall of the circulating pipe 120 is fixedly connected with a pump body 121, the condensing box 102, the circulating pipe 120 and the filter box 101 are connected, and the sulfuric acid that has not condensed into crystals can be secondary refined through the circulating pipe 120, which is more practical.

[0029] like Figure 1-2 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the filter box 101, the ventilation pipe 112, the mounting ring 114, the threaded ring 113 and the filter barrel 103 are connected, the filter box 101, the water pipe 116 and the ventilation pipe 112 are connected, the inner wall of the filter box 101 is slidably connected with a filter plate 122, and the top wall of the filter barrel 103 is detachably connected with a mounting plate 123, and the mounting plate 123 connected to the top wall of the filter barrel 103 can more conveniently take the condensed crystals, thereby improving the convenience of use.

[0030] Specifically, when the sulfuric acid method titanium dioxide waste acid concentration device is used: first, waste acid is added into the filter box 101, and then the heater 110 is started to heat the waste acid, and the waste acid is evaporated, and the evaporated gas is filtered through multiple filter ports 111, so that the water in the gas is removed, and then the valve 118 is opened to let the gas after the water is removed enter the filter barrel 103 through the ventilation pipe 112, and the condenser 115 is started to condense the gas into water and then condense it into crystals. After condensing into crystals, the mounting ring 114 is rotated out of the threaded ring 113, thereby removing the ventilation pipe 112, and then the shielding ring 104 is pulled upward to remove the shielding ring 104 from the condensation box 102, and then the driving motor 107 is started. The gear 108 is driven to rotate, and the gear 108 is meshed with the gear ring 105 to drive the filter barrel 103 to rotate. When the filter barrel 103 rotates, the sulfuric acid that is not completely solidified is filtered into the condensation box 102 under the action of centrifugal force through the filter port 111, and the condensed sulfuric acid is taken out by opening the mounting plate 123. After the sulfuric acid is taken out, the shielding ring 104 and the ventilation pipe 112 are installed, and then the pump body 121 is started to transport the waste acid to the filter box 101 through the circulation pipe 120. When the waste acid is heated to a certain degree by the heater 110, the water pump 117 is turned on to discharge the waste acid into the condensation box 102 through the water pipe 116 and the ventilation pipe 112 for condensation treatment, thereby improving the purity and efficiency of the sulfuric acid.

[0031] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A sulfuric acid process titanium dioxide waste acid concentration device, comprising a support frame (100) and a filter box (101) fixedly connected to the top wall of the support frame (100), characterized in that: The top wall of the carrier frame (100) is fixedly connected to a condensing box (102), the inner wall of the condensing box (102) is connected to a centrifugal rotating component for improving the sulfuric acid concentration efficiency, wherein the centrifugal rotating component comprises a filter barrel (103) rotatably connected to the inside of the condensing box (102), the outer wall of the filter barrel (103) is connected to a shielding ring (104), the top wall of the filter barrel (103) is fixedly connected to a gear ring (105), the outer wall of the filter barrel (103) is fixedly connected to a support frame (106), the bottom wall of the support frame (106) is fixedly connected to a driving motor (107), the output end of the driving motor (107) is fixedly connected to a gear (108), the gear (108) is meshedly connected to the gear ring (105), and the inner wall of the filter box (101) is connected to a distillation component for improving the purity of sulfuric acid refining.

2. The sulfuric acid process titanium dioxide waste acid concentration device according to claim 1, characterized in that: The distillation component comprises a heater (110) fixedly connected to the inside of a filter box (101); the top wall of the filter box (101) is provided with filter ports (111) that are evenly distributed; the top wall of the filter box (101) is fixedly connected to a ventilation pipe (112); the top wall of the filter barrel (103) is rotatably connected to a threaded ring (113); an end of the ventilation pipe (112) away from the filter box (101) is also rotatably connected to a mounting ring (114); the mounting ring (114) is threadably connected to the threaded ring (113); and the outer wall of the ventilation pipe (112) is connected to a valve (118).

3. A sulfuric acid process titanium dioxide waste acid concentration device according to claim 2, characterized in that: The inner wall of the filter barrel (103) is fixedly connected to uniformly distributed condensers (115), the side wall of the filter box (101) is fixedly connected to a water pipe (116), the outer wall of the water pipe (116) is fixedly connected to a water pump (117), and one end of the water pipe (116) away from the filter box (101) is also fixedly connected to a ventilation pipe (112).

4. A sulfuric acid process titanium dioxide waste acid concentration device according to claim 3, characterized in that: A circulation pipe (120) is fixedly connected to the bottom wall of the condensing box (102); one end of the circulation pipe (120) away from the condensing box (102) is also fixedly connected to the filter box (101); an outer wall of the circulation pipe (120) is fixedly connected to a pump body (121); and the condensing box (102), the circulation pipe (120) and the filter box (101) are in communication.

5. A sulfuric acid process titanium dioxide waste acid concentration device according to claim 4, characterized in that: The filter box (101), the vent pipe (112), the mounting ring (114), the threaded ring (113) and the filter barrel (103) are connected; the filter box (101), the water pipe (116) and the vent pipe (112) are connected; the inner wall of the filter box (101) is slidably connected to a filter plate (122); and the top wall of the filter barrel (103) is detachably connected to a mounting plate (123).

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