Waste acid concentration and distillation equipment

Abstract

The utility model discloses waste acid concentration and distillation equipment which comprises a distillation retort, a preheating tank is fixedly connected to the outer side wall of the distillation retort, a water inlet pipe and a water outlet pipe are fixedly connected to the side wall of the preheating tank, one end of the water outlet pipe penetrates through the side wall of the preheating tank and is fixedly connected to the side wall of the distillation retort, and the other end of the water outlet pipe penetrates through the side wall of the distillation retort. The water outlet pipe is provided with a water suction pump, the upper side wall of the distillation retort is fixedly connected with a rotating motor which is vertically arranged downwards, the output end of the rotating motor penetrates through the side wall of the distillation retort and is fixedly connected with a rotating rod, and the rotating rod is fixedly connected with a plurality of groups of stirring rods. According to the utility model, the later distillation time is shortened, the heat utilization rate is improved, certain loss is reduced, and the waste acid treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium dioxide waste acid treatment, in particular to waste acid concentration and distillation equipment. Background Art

[0002] Titanium dioxide is one of the most important chemical raw materials at home and abroad today. There are nearly 100 titanium dioxide factories in my country with an annual production capacity of 600,000 tons. Except for Jinzhou Titanium Dioxide Factory which adopts the chlorination production process, all others adopt the sulfuric acid production process. According to statistics, this production process produces 8 to 10 tons of 20% waste acid for every ton of titanium dioxide produced, and the waste acid produced each year reaches 4.8 million to 6 million tons. For such a large amount of high-concentration waste acid, most domestic titanium dioxide manufacturers use the lime neutralization method for simple treatment. Some companies even discharge it directly without treatment, causing serious environmental pollution.

[0003] Concentration method is a common method for waste acid extraction. Generally, the waste acid needs to be heated to remove the water in it in order to meet the use and emission requirements of the titanium dioxide waste acid acidolysis section and to achieve the recycling of waste acid. In the process of heating the waste acid, the heat generated is reused, which can reduce consumption to a certain extent. In order to solve the above problems, we designed a waste acid concentration and distillation equipment. Utility Model Content

[0004] The utility model provides a waste acid concentration and distillation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A waste acid concentration and distillation device comprises a distillation tank, a preheating tank is fixedly connected to the outer side wall of the distillation tank, a water inlet pipe and a water outlet pipe are fixedly connected to the side wall of the preheating tank, one end of the water outlet pipe penetrates the side wall of the preheating tank and is fixedly connected to the side wall of the distillation tank, a water pump is provided on the water outlet pipe, a rotating motor arranged vertically downward is fixedly connected to the upper side wall of the distillation tank, the output end of the rotating motor penetrates the side wall of the distillation tank and is fixedly connected to a rotating rod, a plurality of groups of stirring rods are fixedly connected to the rotating rod, a guide pipe is fixedly connected to the side wall of the distillation tank, a condensing part is provided on the guide pipe, a discharge pipe is fixedly connected to the bottom side wall of the distillation tank, the discharge pipe penetrates the side wall of the preheating tank, and a heating plate is fixedly connected to the inner bottom side wall of the distillation tank through a bracket.

[0007] Preferably, a temperature sensor is fixedly connected to the inner side wall of the distillation tank, and a temperature display is fixedly connected to the outer side wall of the distillation tank, and the temperature sensor and the temperature display are electrically connected.

[0008] Preferably, a filter screen is fixedly connected to the inner side wall of the distillation tank, the rotating rod passes through the side wall of the filter screen, and a cleaning brush is fixedly connected to the side wall of the rotating rod.

[0009] Preferably, a feed pipe is fixedly connected to the side wall of the distillation tank, and a sealing plug is provided at the upper end of the feed pipe.

[0010] Preferably, a scraper is fixedly connected to the side wall of the stirring rod.

[0011] Preferably, the longitudinal section of the inner side wall of the distillation tank is relatively inclined.

[0012] Preferably, valves are provided on both the discharge pipe and the water inlet pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By arranging a preheating tank on the outer wall of the distillation tank, the heat generated by the heating of the distillation tank is heat-exchanged with the waste acid in the preheating tank, and the waste acid to be distilled is heated in advance, thereby reducing the time for heating in the later distillation, shortening the time for the later distillation, improving heat recovery, and reducing certain losses;

[0015] The waste acid can be stirred by rotating the motor, the rotating rod and the stirring rod, so that the acidity of the heated acid becomes faster, and when the solvent is added, the solvent and the waste acid can be evenly mixed together.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a waste acid concentration and distillation device proposed by the utility model;

[0019] Figure 2 This is a front view cross-sectional structural schematic diagram of a waste acid concentration and distillation device proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of the cross-sectional structure of a waste acid concentration and distillation device.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Distillation tank; 2. Preheating tank; 3. Water inlet pipe; 4. Water pump; 5. Water outlet pipe; 6. Rotating motor; 7. Rotating rod; 8. Stirring rod; 9. Heating plate; 10. Discharge pipe; 11. Filter; 12. Cleaning brush; 13. Guide pipe; 14. Condensation piece; 15. Feed pipe; 16. Sealing plug; 17. Temperature sensor; 18. Temperature display; 19. Scraper. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figure 1-3In an embodiment of the utility model, a waste acid concentration and distillation device comprises a distillation tank 1, a preheating tank 2 is fixedly connected to the outer wall of the distillation tank 1, a water inlet pipe 3 and a water outlet pipe 5 are fixedly connected to the side wall of the preheating tank 2, one end of the water outlet pipe 5 passes through the side wall of the preheating tank 2 and is fixedly connected to the side wall of the distillation tank 1, a water pump 4 is provided on the water outlet pipe 5, a rotating motor 6 arranged vertically downward is fixedly connected to the upper side wall of the distillation tank 1, the output end of the rotating motor 6 passes through the side wall of the distillation tank 1 and is fixedly connected to a rotating rod 7, a plurality of groups of stirring rods 8 are fixedly connected to the rotating rod 7, a guide pipe 13 is fixedly connected to the side wall of the distillation tank 1, a condensing member 14 is provided on the guide pipe 13, a discharge pipe 10 is fixedly connected to the bottom side wall of the distillation tank 1, the discharge pipe 10 passes through the side wall of the preheating tank 2, and a heating plate 9 is fixedly connected to the inner bottom side wall of the distillation tank 1 through a bracket.

[0027] In an optional embodiment, a temperature sensor 17 is fixedly connected to the inner side wall of the distillation tank 1, and a temperature display 18 is fixedly connected to the outer side wall of the distillation tank 1, and the temperature sensor 17 and the temperature display 18 are electrically connected.

[0028] It should be noted that the temperature sensor 17 transmits the internal temperature to the temperature display 18 in real time and displays it, which is convenient for workers to check and control the internal temperature of the distillation tank 1.

[0029] In an optional embodiment, a filter screen 11 is fixedly connected to the inner side wall of the distillation tank 1 , the rotating rod 7 passes through the side wall of the filter screen 11 , and a cleaning brush 12 is fixedly connected to the side wall of the rotating rod 7 .

[0030] It should be noted that the steam may contain some particulate debris, and the particulate debris is filtered out to improve the extraction effect. The cleaning brush 12 cleans the filter 11 to ensure the filtering effect of the filter 11.

[0031] In an optional embodiment, a feed pipe 15 is fixedly connected to the side wall of the distillation tank 1 , and a sealing plug 16 is provided at the upper end of the feed pipe 15 .

[0032] It should be noted that the effect of waste acid extraction can be improved by adding hydrochloric acid to the waste titanium dioxide acid.

[0033] In an optional embodiment, a scraper 19 is fixedly connected to the side wall of the stirring rod 8 .

[0034] It should be noted that, by rotating the scraper 19 , the material adhering to the inner wall of the distillation tank 1 can be scraped off.

[0035] In an optional embodiment, the longitudinal section of the inner side wall of the distillation tank 1 is relatively inclined.

[0036] It should be noted that in addition to the high sulfuric acid content, titanium dioxide waste acid also contains a part of rare earth metals, which also has a certain recovery value. After the distillation is completed, it is convenient to discharge the rare earth metals or other impurities in it.

[0037] In an optional embodiment, valves are provided on the discharge pipe 10 and the water inlet pipe 3 .

[0038] It should be noted that it is convenient to control the discharge pipe 10 and the water inlet pipe 3.

[0039] The working principle of the utility model is that when in use, the heating plate 9 is started to heat the waste acid, and the waste acid in the distillation tank 1 can be stirred with the stirring rod 8 by rotating the output end of the rotating motor 6, so that the waste acid flows and is heated evenly. The heat generated by the heating is transmitted outwardly through the distillation tank 1, and can be heat-exchanged with the waste acid reserved in the preheating tank 2 to increase the temperature of the waste acid. After the waste acid treatment in the distillation tank 1 is completed, the preheated waste acid is transported into the distillation tank 1 through the water pump 4.

[0040] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A waste acid concentration and distillation device, comprising a distillation tank (1), characterized in that: The outer side wall of the distillation tank (1) is fixedly connected to a preheating tank (2); the side wall of the preheating tank (2) is fixedly connected to a water inlet pipe (3) and a water outlet pipe (5); one end of the water outlet pipe (5) passes through the side wall of the preheating tank (2) and is fixedly connected to the side wall of the distillation tank (1); a water pump (4) is provided on the water outlet pipe (5); a rotating motor (6) arranged vertically downward is fixedly connected to the upper side wall of the distillation tank (1); the output end of the rotating motor (6) passes through the side wall of the preheating tank (2); A rotating rod (7) is fixedly connected to the side wall of the distillation tank (1), and a plurality of stirring rods (8) are fixedly connected to the rotating rod (7). A flow guide tube (13) is fixedly connected to the side wall of the distillation tank (1), and a condensing member (14) is provided on the flow guide tube (13). A discharge pipe (10) is fixedly connected to the bottom side wall of the distillation tank (1), and the discharge pipe (10) passes through the side wall of the preheating tank (2). A heating plate (9) is fixedly connected to the inner bottom side wall of the distillation tank (1) via a bracket.

2. A waste acid concentration and distillation device according to claim 1, characterized in that: A temperature sensor (17) is fixedly connected to the inner side wall of the distillation tank (1), and a temperature display (18) is fixedly connected to the outer side wall of the distillation tank (1), and the temperature sensor (17) and the temperature display (18) are electrically connected.

3. A waste acid concentration and distillation equipment according to claim 2, characterized in that: A filter screen (11) is fixedly connected to the inner side wall of the distillation tank (1), the rotating rod (7) passes through the side wall of the filter screen (11), and a cleaning brush (12) is fixedly connected to the side wall of the rotating rod (7).

4. A waste acid concentration and distillation device according to claim 3, characterized in that: A feed pipe (15) is fixedly connected to the side wall of the distillation tank (1), and a sealing plug (16) is provided at the upper end of the feed pipe (15).

5. A waste acid concentration and distillation device according to claim 4, characterized in that: A scraper (19) is fixedly connected to the side wall of the stirring rod (8).

6. A waste acid concentration and distillation device according to claim 5, characterized in that: The longitudinal section of the inner side wall of the distillation tank (1) is relatively inclined.

7. A waste acid concentration and distillation device according to claim 6, characterized in that: The discharge pipe (10) and the water inlet pipe (3) are both provided with valves.

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