Petrochemical waste catalyst acid leaching treatment device

Abstract

The invention is suitable for the technical field of waste catalyst treatment, and provides a petrochemical waste catalyst acid leaching treatment device which comprises a tank body, a through groove is formed in the top face of the tank body in a penetrating mode, a barrel is arranged in the through groove in a penetrating mode, a liquid inlet and a liquid outlet pipe are arranged on the side wall of the tank body, and an air inlet pipe is arranged at the top of the tank body in a penetrating mode. A heating assembly is arranged on the inner bottom surface of the tank body; the heating assembly comprises a box body, a heating cavity is formed in the box body, a heating pipe and a temperature sensor are arranged in the heating cavity, and the heating pipe and the temperature sensor are electrically connected with a control system and a power source. The grid part at the bottom of the barrel is used for effectively separating the waste catalyst from the acid liquor, so that the problems of non-uniform treatment and low efficiency possibly caused by directly adding the waste catalyst into a high-pressure reaction kettle are avoided; the gas inlet pipe is inserted into the acid solution, so that oxygen is in full contact with the waste catalyst and the acid solution, and the reaction is more sufficient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of waste catalyst treatment, and particularly relates to a petroleum chemical waste catalyst acid leaching treatment device. BACKGROUND

[0002] With the increasing sales of oil refining catalysts year by year, the amount of waste oil refining catalysts also increases year by year. If the waste oil refining catalysts are not scientifically managed, the toxic and harmful components therein will pollute the environment and endanger human health, and some valuable metal resources therein will also be lost. Therefore, effective treatment and utilization of waste oil refining catalysts have become a very important issue.

[0003] In the comprehensive utilization process of extracting valuable elements such as molybdenum and vanadium from waste catalysts, and in the processes of nickel smelting, nickel salt production and electroplating, there are a large amount of elements such as molybdenum, vanadium, tungsten, nickel, copper and iron. If they are discharged into the environment without treatment, they will have adverse effects on the environment, such as pollution of soil, water sources and harm to organisms.

[0004] The treated nickel slag can be used again in the fields of alloy manufacturing, building materials and the like. For example, the treated nickel slag can be added to cement for use, so as to enhance the hardness and durability of the cement. In addition, the treated nickel slag can also be used to reduce the density of building materials and improve the heat insulation performance of buildings.

[0005] Nickel catalysts exhibit very high hydrogenation activity. Due to their good catalytic activity, high mechanical strength, insensitivity to poisons, good thermal conductivity and other advantages, they are not only applied to the hydrogenation of various unsaturated hydrocarbons, but also are good catalysts in some conversion processes such as dehydrogenation, oxidative dehalogenation and desulfurization, and are used in petroleum, chemical industry, pharmaceuticals, oil and fat, perfume, hydrogen peroxide and synthetic fibers, especially in the industries of sorbitol, xylitol and maltitol.

[0006] Raney nickel is mainly used for the hydrogenation of unsaturated compounds such as alkenes, alkynes, nitriles, dienes, aromatic hydrocarbons, substances containing carbonyl groups, and even polymers with unsaturated bonds. Sometimes, hydrogenation using Raney nickel can be completed even without the addition of hydrogen gas, only with the large amount of hydrogen gas adsorbed in the activated Raney nickel. The reaction produces a cis-hydrogenation product. In addition, Raney nickel can also be used for the reduction of heteroatom-heteroatom bonds. In addition to being used as a catalyst for hydrogenation, Raney nickel also participates in the reaction of desulfurization of organic sulfur-containing compounds such as thioacetals to generate hydrocarbons as a reagent, and the treated nickel slag can be applied to multiple fields to realize resource reuse.

[0007] The resourceful disposal mode of waste catalyst achieves reduction, harmlessness and recycling of resources, i.e., recycling of waste to waste producing units and production of other basic chemical raw materials with different properties from the waste. The resourceful disposal mode improves resource utilization efficiency while protecting and improving the environment. The resourceful disposal mode of waste catalyst will be paid more attention to and is a development direction.

[0008] The waste catalyst in petroleum chemical industry often contains some toxic ingredients, mainly heavy metals and volatile organic compounds, which have great environmental risk. Therefore, harmless treatment and disposal is particularly important. In addition, the waste catalyst in petroleum chemical industry contains high content of noble metals or other valuable metals, which are even much higher than the content of corresponding components in some poor ores. The high grade of metals can be recycled as secondary resources. Comprehensive utilization of waste catalyst in petroleum chemical industry can not only improve resource utilization rate, but also avoid environmental problems caused by waste catalyst and realize sustainable development.

[0009] After roasting process, wet alkali leaching to extract molybdenum and vanadium from waste catalyst containing molybdenum, vanadium and nickel, the nickel-aluminum residue is obtained. Extraction of nickel and aluminum from the nickel-aluminum residue is a very important work for comprehensive utilization of waste catalyst.

[0010] Most of the existing waste catalyst acid leaching treatment devices are directly added to the high-pressure reaction kettle for acid leaching. Therefore, the present application provides a petroleum chemical waste catalyst acid leaching treatment device. SUMMARY

[0011] The purpose of the present application is to provide a petroleum chemical waste catalyst acid leaching treatment device to solve the problem of low efficiency of waste catalyst acid leaching treatment in the prior art.

[0012] To achieve the above purpose, the present application provides the following technical scheme: a petroleum chemical waste catalyst acid leaching treatment device, comprising a tank body, a through groove is formed through the top surface of the tank body, a cylinder is arranged in the through groove, a grid is arranged at the bottom of the cylinder, a liquid inlet and a liquid outlet pipe are arranged on the side wall of the tank body, a gas inlet pipe is arranged at the top of the tank body, the gas inlet pipe extends to the bottom of the tank body, and a heating assembly is arranged on the inner bottom surface of the tank body.

[0013] Preferably, the heating assembly comprises a box body, a heating cavity is arranged in the box body, a heating pipe and a temperature sensor are arranged in the heating cavity, and the heating pipe and the temperature sensor are electrically connected with a control system and a power supply.

[0014] Preferably, a top cover is arranged on the top surface of the tank body, and the gas inlet pipe penetrates the top cover.

[0015] Preferably, buckles are symmetrically arranged between the side wall of the top cover and the side wall of the tank body.

[0016] Preferably, the side wall of the air inlet pipe is provided with a thimble inside the tank body, and the cylinder passes through the thimble.

[0017] Preferably, the top of the cylinder is provided with an annular protrusion which is lapped on the top edge of the through slot, and the top of the cylinder is provided with a handle.

[0018] The present application has at least the following advantages: (1) The present application effectively separates the spent catalyst from the acid solution by using the grid part at the bottom of the cylinder, avoiding the problems of uneven treatment and low efficiency caused by directly adding the high-pressure reaction kettle; (2) The heating assembly of the present application is electrically connected with the temperature sensor, and has a control system and a power supply, which can realize accurate control of the heating temperature, ensuring the stability and reliability of the acid leaching process; (3) The present application inserts the air inlet pipe into the acid solution, so that the oxygen is in full contact with the spent catalyst and the acid solution, so that the reaction is more sufficient; (4) The present application can conveniently install and disassemble the top cover through the buckle; In summary, the present application provides a kind of petroleum chemical waste catalyst acid leaching treatment device, which has the advantages of high treatment efficiency, simple operation, safety and reliability, and is of great significance for promoting the resource disposal and recycling of waste catalyst. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the internal structure of the present application; Figure 3 It is a schematic diagram of the heating assembly structure of the present application; Figure 4 It is a schematic diagram of the cylinder structure of the present application.

[0020] In the drawing mark: 1, tank body; 2, top cover; 3, liquid inlet; 4, liquid outlet pipe; 5, air inlet pipe; 6, cylinder; 7, handle; 8, grid part; 9, through slot; 10, thimble; 11, heating assembly; 12, heating cavity; 13, heating pipe; 14, buckle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. EMBODIMENT

[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the present application provides a technical solution: a kind of petrochemical waste catalyst acid leaching treatment device, including tank body 1, the top surface of tank body 1 is throughly provided with through slot 9, the inside of through slot 9 is provided with barrel 6, specifically, barrel 6 can be moved upwards or downwards in the inside of through slot 9, the bottom of barrel 6 is provided with grid part 8, specifically, by immersing grid part 8 in acidic solution, the side wall of tank body 1 is provided with liquid inlet 3 and liquid outlet pipe 4, specifically, by injecting acidic solution through liquid inlet 3, acidic solution is discharged through liquid outlet pipe 4, liquid inlet 3 and liquid outlet pipe 4 are connected with control valve, the top of tank body 1 is provided with gas inlet pipe 5, specifically, gas inlet pipe 5 is fixedly connected with the top of tank body 1, gas inlet pipe 5 is connected with oxygen supply tank, oxygen is supplied to acidic solution, gas inlet pipe 5 extends to the bottom of tank body 1, specifically, gas inlet pipe 5 extends to the inside of acidic solution, the inner bottom surface of tank body 1 is provided with heating assembly 11.

[0023] In the embodiment, nickel-aluminum slag is added to barrel 6, then inserted into through slot 9, placed into high-pressure reaction kettle, acidic solution is injected through liquid inlet 3, and oxygen is introduced through gas inlet pipe 5, the initial pressure of oxygen is set to 0.5-0.6 MPa, the reaction temperature is set to 150-160 ℃, the reaction time is 2 hours, and a certain proportion of sodium sulfate is added to make part of aluminum ions generated in the reaction form bauxite and nickel is separated.

[0024] Further, heating assembly 11 includes a box body, the inside of the box body is provided with a heating cavity 12, the inside of the heating cavity 12 is provided with a heating pipe 13 and a temperature sensor, the heating pipe 13 and the temperature sensor are electrically connected with a control system and a power supply.

[0025] In the embodiment, the heating pipe 13 can heat the acidic solution in the tank body 1 to reach the required temperature range for the reaction, and the temperature sensor can monitor the temperature in the heating cavity 12 in real time and feed back the temperature information to the control system, and the control system controls the working state of the heating pipe 13 according to the received temperature information, for example, when the temperature is lower than the set value, the control system will start the heating pipe 13 to heat; when the temperature reaches the set value, the control system will stop the work of the heating pipe 13, so as to ensure that the reaction is carried out under suitable temperature conditions, improve the efficiency and quality of acid leaching treatment; at the same time, the power supply provides the required electric energy for the heating pipe 13 and the temperature sensor, to ensure that the whole heating assembly 11 can normally operate.

[0026] Further, the top surface of tank body 1 is provided with a top cover 2, and the gas inlet pipe 5 penetrates the top cover 2, specifically, the top cover 2 is slidably connected with the gas inlet pipe 5.

[0027] In the embodiment, the tank body 1 and the cylinder body 6 are sealed by the top cover 2, which can effectively prevent the acid solution from volatilizing and external impurities from entering the inside of the tank body, and ensure the stability and safety of the acid immersion treatment process; meanwhile, the air inlet pipe penetrates through the top cover and is in sliding connection with the top cover, which not only ensures the smooth entry of oxygen, but also facilitates the disassembly or adjustment of the top cover when needed, thereby improving the flexibility and convenience of the device in use.

[0028] Further, buckles 14 are symmetrically arranged between the side wall of the top cover 2 and the side wall of the tank body 1.

[0029] In the embodiment, the top cover 2 is connected with the tank body 1 through the buckles 14, which facilitates disassembly and installation, and when it is needed to open the top cover to clean, overhaul or add materials in the tank body, etc., the top cover can be easily removed by only unfastening the buckles; after the operation is completed, the top cover is placed back to the original position and the buckles are fastened, so that the tight connection between the top cover and the tank body is realized, the sealing property of the tank body in the subsequent use process is ensured, and the leakage of the acid solution and the entry of external pollutants are avoided.

[0030] Further, a sleeve ring 10 is symmetrically arranged on the side wall of the air inlet pipe 5 in the inside of the tank body 1, specifically, the sleeve ring 10 is fixedly connected with the side wall of the air inlet pipe 5, and the cylinder body 6 penetrates through the sleeve ring 10, specifically, the cylinder body 6 is in sliding connection with the sleeve ring 10.

[0031] In the embodiment, the sleeve ring 10 plays a role of fixing and guiding the cylinder body 6, and when the cylinder body 6 moves up and down in the through slot 9, the sleeve ring 10 can ensure the stability of the movement of the cylinder body 6 and prevent the cylinder body 6 from shaking or deviating in the acid solution.

[0032] Further, the top of the cylinder body 6 is provided with an annular protrusion, specifically, the annular protrusion is an integral structure with the cylinder body 6, the annular protrusion is arranged on the top surface edge of the through slot 9, and the top of the cylinder body 6 is provided with a handle 7, specifically, the handle 7 is fixedly connected with the cylinder body 6.

[0033] In the embodiment, the design of the annular protrusion enables the cylinder body to be stably placed on the tank body after being inserted into the through slot, which avoids the shaking or displacement of the cylinder body due to the fluctuation of the solution or external factors in the acid immersion treatment process, thereby ensuring the stability and safety of the treatment process; meanwhile, the handle facilitates the taking and placing of the cylinder body by the operator, and especially when the cylinder body needs to be frequently replaced or cleaned, the handle can greatly improve the convenience and efficiency of the operation and reduce the labor intensity of the operator.

[0034] The working principle and use process of the present application are as follows: after the present application is installed, the above embodiments are performed until all the working steps are completed.

[0035] The foregoing shows and describes the basic principles of the application, the main features and the advantages of the application, and it is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application, and therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the application is defined by the appended claims rather than the above description, and therefore, all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the application, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] Although embodiments of the application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the application, the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A petrochemical waste catalyst acid leaching treatment device, characterized in that, The tank includes a tank body (1), a through groove (9) is provided on the top surface of the tank body (1), a cylinder (6) is provided inside the through groove (9), a mesh part (8) is provided at the bottom of the cylinder (6), an inlet (3) and an outlet (4) are provided on the side wall of the tank body (1), an air inlet pipe (5) is provided on the top of the tank body (1), the air inlet pipe (5) extends to the bottom of the tank body (1), and a heating component (11) is provided on the inner bottom surface of the tank body (1).

2. The petrochemical waste catalyst acid leaching treatment device according to claim 1, characterized in that: The heating assembly (11) includes a housing, inside which is a heating chamber (12), inside which is a heating tube (13) and a temperature sensor, and the heating tube (13) and the temperature sensor are electrically connected to a control system and a power supply.

3. The petrochemical waste catalyst acid leaching treatment device according to claim 1, characterized in that: The top surface of the tank (1) is provided with a top cover (2), and the air inlet pipe (5) passes through the top cover (2).

4. The petrochemical waste catalyst acid leaching treatment device according to claim 3, characterized in that: The side wall of the top cover (2) and the side wall of the tank (1) are symmetrically provided with buckles (14).

5. The petrochemical waste catalyst acid leaching treatment device according to claim 1, characterized in that: The side wall of the air inlet pipe (5) is symmetrically provided with a collar (10) inside the tank (1), and the cylinder (6) passes through the collar (10).

6. The petrochemical waste catalyst acid leaching treatment device according to claim 1, characterized in that: The top of the cylinder (6) is provided with an annular protrusion, which rests on the top edge of the through groove (9), and the top of the cylinder (6) is provided with a handle (7).

Images