Sectional precipitation and recovery device for catalyst waste

Abstract

A catalyst waste sectional precipitation and recovery device is characterized in that the interior of a shell is sequentially divided into a water precipitation section, an organic matter precipitation section and a cooling section through two wind blocking partition plates, a low-speed conveyor penetrating through all the sections is arranged in the middle of the interior of the shell, and high-speed conveyors penetrating through all the sections are arranged on the two sides of the low-speed conveyor respectively; the low-speed conveyor of the water analysis discharging section is provided with a feeding hopper, the hot air system is communicated with the interiors of shells at the bottoms of the water analysis discharging section and the organic matter precipitation section respectively, air distribution plates for separating the shells up and down are arranged at the bottoms of the low-speed conveyor and the high-speed conveyor, and inclined ventilation holes for obliquely guiding flow towards the two sides are formed in the air distribution plate below the low-speed conveyor. And a discharge port is formed in the tail end of the cooling section. According to the utility model, organic combustible components and excessive water in the industrial catalyst can be removed, and the organic combustible components are combusted, so that the aim of recovering noble metal compounds in the waste catalyst is fulfilled.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical catalyst recovery, in particular to a catalyst waste segmentation precipitation recovery device. Background Art

[0002] In the chemical industry, many catalysts containing precious metal elements are needed. In the industrial production process, the catalyst combines with a lot of water and organic combustibles and gradually loses its activity, so it needs to be recycled and reused. However, many catalyst wastes have a high moisture content and low calorific value. They cannot burn spontaneously and need to introduce external heat sources. In order to better recover the precious metal elements in the catalyst waste, high-temperature direct incineration is used to drive away the moisture and organic combustible components in the waste, which wastes energy and is not desirable.

[0003] At present, the main methods for treating these wastes are open-air exposure, rotary kiln baking, and crawler furnace baking. Open-air exposure not only has a long treatment cycle, but also causes many organic combustible components to volatilize into the atmosphere, which has odor and causes air pollution; rotary kiln baking is to put these wastes into a rotating drum kiln, and the lifting plate of the rotary kiln lifts and throws the wastes. These wastes precipitate water and organic components through contact with the hot air, but in this process, the precipitated water and organic components are mixed together, and when the catalyst waste is very wet, these organics cannot be effectively used due to the high water content, resulting in a large amount of energy waste; crawler furnace baking is to put these wastes on the conveyor belt of the crawler furnace, and the conveyor belt is carried into the heating area of ​​the furnace body to achieve the purpose of moisture and volatilization analysis, but this type of furnace is more dependent on external energy, and because the particle size of the waste is different, it is difficult to accurately control the process conditions. Therefore, when treating the same batch of wastes with different particle sizes, overheating and incomplete precipitation of moisture and organic matter occur. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a catalyst waste staged precipitation recovery device.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a catalyst waste segmented precipitation and recovery device, including a shell and a wind shield baffle, the shell is divided into a water analysis section, an organic precipitation section and a cooling section in sequence by two wind shield baffles, a low-speed conveyor running through each section is arranged in the middle part of the shell, and high-speed conveyors running through each section are arranged on both sides of the low-speed conveyor, the low-speed conveyor of the water analysis section is provided with a feeding hopper, and a hot air system is connected with the bottom shells of the water analysis section and the organic precipitation section respectively, one side of the shell of the cooling section is an air inlet, and the other side is connected with the air inlet end of the hot air system through a cooling draft fan, an air distribution plate is arranged at the bottom of the low-speed conveyor and the high-speed conveyor to separate the shell from top to bottom, the air distribution plate below the low-speed conveyor is provided with inclined ventilation holes that are inclined to guide air to both sides, and a discharge port is arranged at the end of the cooling section.

[0006] Furthermore, the hot air system is connected to the bottom shell of the water separation section and the organic matter separation section through respective regulating valves.

[0007] Furthermore, the top of the water separation section is connected to the air inlet end of the water separation section induced draft fan, the top of the organic matter precipitation section is connected to the air inlet end of the organic matter precipitation section induced draft fan, and the air outlet end of the organic matter precipitation section induced draft fan is also connected to the air inlet end of the hot air system.

[0008] Furthermore, a hot air induced draft fan is also provided in the pipeline connecting the hot air system and the water analysis outlet section.

[0009] Furthermore, the pipeline connecting the hot air induced draft fan and the water analysis outlet section is also provided with a water analysis outlet section air distribution regulating valve.

[0010] Furthermore, the air inlet of the cooling section is connected to the outside through a cooling section air inlet regulating valve.

[0011] Furthermore, a control cabinet for controlling the low-speed conveyor, the high-speed conveyor motor, and the hot air system is arranged outside the shell.

[0012] Through the above settings, industrial catalyst waste enters the device through the feed hopper after pretreatment, and moves slowly inside the shell driven by the low-speed conveyor and the high-speed conveyor. The hot air provided by the hot air system passes through the air distribution plate and enters the segmented precipitation recovery device in a forced cross-flow manner, and directly contacts the industrial catalyst waste. Under the action of wind, the waste is classified according to the particle size, so that large particles of waste are located in the middle of the device, while small and medium particles are distributed on both sides of the device. Because large particles of waste contain more water and organic matter, the precipitation time is longer, so they move slowly in the bed driven by the low-speed conveyor, so that the water and organic matter are fully precipitated; and small and medium particles of waste have a shorter time to precipitate water and organic matter, so they can be quickly transported by the high-speed conveyor. Large, medium and small particles are cooled in the cooling section and discharged by the discharging system for recovery;

[0013] Under the action of hot air, the industrial catalyst waste first separates most of the water in the water separation section, and the water is discharged with the hot air. Then, the organic matter is separated in the organic matter separation section. These combustible organic matter is introduced into the hot air system for combustion and generates hot air and provides part of the heat, reducing the auxiliary fuel consumption. In the cooling section, the ambient air is introduced to cool the waste after the water and organic matter are separated. After the ambient air is heated, it is introduced into the hot air system for combustion support.

[0014] By means of wind shields between the water separation section, organic matter separation section and cooling section, as well as setting different negative pressures between sections, the mutual circulation of the separated hot water vapor, hot organic matter and cooling air can be effectively isolated.

[0015] The effect and advantage of the utility model is that the temperatures of the three sections, namely the water separation section, the organic matter precipitation section and the cooling section, are controllable, and the organic combustible components and excess water in the industrial catalyst can be removed, and the organic combustible components can be burned, thereby effectively utilizing the calorific value of the industrial waste catalyst and achieving the purpose of recovering the precious metal compounds in the waste catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is now further described with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the housing of the utility model from a side view;

[0019] Figure 3 It is a schematic diagram of the three-dimensional internal structure of the shell of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-3As shown, a catalyst waste segmented precipitation recovery device comprises a shell 1 and a windshield baffle 2. The shell 1 is divided into a water separation section 3, an organic matter separation section 4 and a cooling section 5 in sequence by two windshield baffles 2. A low-speed conveyor 6 running through each section is arranged in the middle of the shell 1. High-speed conveyors 7 running through each section are arranged on both sides of the low-speed conveyor 6. The low-speed conveyor 6 of the water separation section 3 is provided with a feed hopper 8. A hot air system 9 is connected to the bottom of the water separation section 3 and the organic matter separation section 4 respectively. The shell 1 is connected inside, one side of the shell 1 of the cooling section 5 is an air inlet, and the other side is connected to the air inlet end of the hot air system 9 through a cooling draft fan 10. The low-speed conveyor 6 and the high-speed conveyor 7 are provided at the bottom with an air distribution plate 11 that separates the shell 1 up and down. The air distribution plate 11 below the low-speed conveyor 6 is provided with inclined ventilation holes 12 that are inclined to guide air to both sides, that is, inclined toward the direction of the high-speed conveyor 7 on both sides, and at an angle of 45° to 80° to the horizontal direction. A discharge port 13 is provided at the end of the cooling section 5.

[0021] Specifically, the hot air system 9 is connected to the bottom shell 1 of the water analysis section 3 and the organic matter precipitation section 4 through their respective regulating valves 14, the top of the water analysis section 3 is connected to the air inlet end of the water analysis section induced draft fan 15, the top of the organic matter precipitation section 4 is connected to the air inlet end of the organic matter precipitation section induced draft fan 16, the air outlet end of the organic matter precipitation section induced draft fan 16 is also connected to the air inlet end of the hot air system 9, the pipeline connecting the hot air system 9 and the water analysis section 3 is also provided with a hot air induced draft fan 17, the hot air induced draft fan 17 is connected to the water analysis section 3, and the hot air induced draft fan 17 is connected to the water analysis section 3. The pipeline connected to the outlet section 3 is also provided with a water analysis outlet section air distribution regulating valve 18. The air inlet of the cooling section 5 is connected to the outside through the cooling section air inlet regulating valve 19. A control cabinet 20 for controlling the speed of the low-speed conveyor 6, the speed of the high-speed conveyor 7, and the hot air system 9 is provided on the outside of the shell 1. The low-speed conveyor 6, the high-speed conveyor 7, the hot air system 9 and the control cabinet 20 are existing technologies. The high-speed conveyor 7 is slightly higher than the low-speed conveyor 6 in height and its position is adjustable. Its specific structure will not be repeated here.

[0022] It should be noted that the low-speed conveyor 6 and the high-speed conveyor 7 described in the present invention are only described for the convenience of distinguishing the conveying speed, and the conveying speeds of the two can be adjusted according to production needs. It is only necessary that the conveying speed of the high-speed conveyor 7 is greater than that of the low-speed conveyor 6.

[0023] The working principle of the utility model is as follows: the hot air induced draft fan 17, the water analysis section induced draft fan 15, the organic matter precipitation section induced draft fan 16, and the cooling induced draft fan 10 are turned on, and the burner of the hot air system 9 is started at the same time, and the hot air passes through the bottom of the shell 1, the air distribution plate 11 and the inclined ventilation hole 12, and enters the water analysis section 3 and the organic matter precipitation section 4;

[0024] The control cabinet 20 sets the temperature of the water separation section 3, the organic matter separation section 4, and the cooling section 5 during normal operation, and monitors the pressure and flow through these three sections;

[0025] Industrial catalyst waste starts to be fed through the feed hopper 8, and the waste after feeding first enters the low-speed conveyor 6 located in the middle of the width direction of the housing 1, and is driven forward by it;

[0026] The hot air flow introduced by the hot air system 9 is blown out through the air distribution plate 11 at the bottom of the shell 1, and cross-flows through the low-speed conveyor 6, the high-speed conveyor 7 and the industrial catalyst waste through the inclined ventilation holes 12. The inclined ventilation holes 12 are located below the low-speed conveyor 6 and are inclined toward the high-speed conveyors 7 on both sides, and are at an angle of 45 to 80 degrees to the horizontal direction. After the change of direction of the ventilation duct, the industrial catalyst waste is classified according to the particle size under the action of wind force. The small and medium-sized particles of the catalyst waste are driven by the wind, make parabolic motion in the shell 1, and are blown onto the high-speed conveyors 7 on both sides, and are pushed forward by the high-speed conveyors 7. The large particles of the catalyst waste cannot be blown up due to their heavy weight, and stay on the low-speed conveyor 6 in the middle and are carried forward;

[0027] Considering that small and medium-sized particles are lighter in weight, they are lifted up by hot air, and the waste precipitates moisture and organic matter faster, while large particles are heavier and cannot be lifted up, and precipitate moisture and organic matter slower, the high-speed conveyor 7 should be slightly higher in height than the low-speed conveyor 6, and the position can be adjusted, so that small and medium-sized particles can be "blown up", "inflated" and "lifted" by hot air on the low-speed conveyor, and fall onto the high-speed conveyors on both sides to achieve classification. If there is no such height difference, large particles may "roll" onto the high-speed conveyors on both sides with the wind, resulting in incomplete precipitation; this can be more conducive to grading the particle size and effectively improve the processing efficiency;

[0028] Wind shielding plates 9 are provided between the water separation section 3 and the organic matter separation section 4, and between the organic matter separation section 4 and the cooling section 5, and the three sections are respectively operated under negative pressure by suction through the water separation section induced draft fan 15, the organic matter separation section induced draft fan 16, and the cooling induced draft fan 10. According to the setting of the device process, the pressure of the organic matter separation section is slightly higher than that of the water separation section and the cooling section.

[0029] The hot air from the hot air system 9 is usually at a temperature of 400-600°C, while the temperature required for the water analysis section 3 is often around 200°C. Therefore, the control cabinet 20 needs to control the opening of the regulating valve 14, the water analysis section air distribution regulating valve 18 and the discharge regulating valve (the valve between the hot air induced draft fan 17 and the water analysis section 3 regulating valve 14) of the water analysis section 3 according to the set temperature and pressure, and ensure that the water analysis section 3 is maintained within the set temperature, flow and pressure range by adjusting the water analysis section induced draft fan 15 and the hot air induced draft fan 17;

[0030] The control cabinet 20 controls the opening of the regulating valve 14 of the organic precipitation section 4 and adjusts the frequency of the organic precipitation section induced draft fan 16 according to the set temperature and pressure, ensuring that the organic precipitation section 4 is maintained within the set temperature, flow rate and pressure range;

[0031] The control cabinet 20 controls the opening of the cooling section air inlet regulating valve 19 and adjusts the frequency of the cooling induced draft fan 10 according to the set temperature and pressure, and draws in ambient air to ensure that the cooling section 5 is maintained within the set temperature, flow rate and pressure range. The cooling air from the cooling section 5 is sent to the hot air system 9 to provide combustion-supporting air and affect the hot air temperature at the outlet of the hot air system 9 to be maintained at 400~600℃. Therefore, the cooling section air distribution regulating valve (i.e., the valve connected to the air inlet end of the cooling induced draft fan 10) must be adjusted to add a certain amount of ambient air;

[0032] Under the action of hot air, the catalyst waste separates water vapor and organic matter in the water separation section 3 and the organic matter separation section 4 respectively, is cooled in the cooling section 5, and is finally discharged through the discharge port 13. According to the final state of the catalyst waste, the rotation speed of the low-speed conveyor motor and the high-speed conveyor motor can be adjusted respectively to change the conveying speed to achieve the result of improving efficiency.

[0033] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A catalyst waste staged precipitation recovery device, comprising a housing (1) and a windshield baffle (2), characterized in that: The shell (1) is divided into a water separation section (3), an organic matter separation section (4) and a cooling section (5) in sequence by two wind shielding partitions (2). A low-speed conveyor (6) running through each section is provided in the middle of the shell (1). High-speed conveyors (7) running through each section are provided on both sides of the low-speed conveyor (6). The low-speed conveyor (6) of the water separation section (3) is provided with a feed hopper (8). The hot air system (9) is connected to the water separation section (3), the organic matter separation section (4) and the cooling section (5). The bottom shell (1) is connected, one side of the shell (1) of the cooling section (5) is an air inlet, and the other side is connected to the air inlet end of the hot air system (9) through a cooling induced draft fan (10), and an air distribution plate (11) is provided at the bottom of the low-speed conveyor (6) and the high-speed conveyor (7) to separate the shell (1) from top to bottom, and the air distribution plate (11) below the low-speed conveyor (6) is provided with inclined ventilation holes (12) that are inclined to guide air to both sides, and a discharge port (13) is provided at the end of the cooling section (5).

2. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: The hot air system (9) is connected to the bottom shell (1) of the water separation section (3) and the organic matter separation section (4) through respective regulating valves (14).

3. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: The top of the water separation section (3) is connected to the air inlet end of the water separation section induced draft fan (15), the top of the organic matter precipitation section (4) is connected to the air inlet end of the organic matter precipitation section induced draft fan (16), and the air outlet end of the organic matter precipitation section induced draft fan (16) is also connected to the air inlet end of the hot air system (9).

4. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: The pipeline connecting the hot air system (9) and the water analysis extraction section (3) is also provided with a hot air induced draft fan (17).

5. A catalyst waste staged precipitation and recovery device as claimed in claim 4, characterized in that: The pipeline connecting the hot air induced draft fan (17) and the water analysis outlet section (3) is also provided with a water analysis outlet section air distribution regulating valve (18).

6. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: The air inlet of the cooling section (5) is connected to the outside through the cooling section air inlet regulating valve (19).

7. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: A control cabinet (20) for controlling the speed of the low-speed conveyor (6), the speed of the high-speed conveyor (7), and the hot air system (9) is arranged outside the housing (1).

8. A catalyst waste staged precipitation and recovery device as claimed in claim 1, characterized in that: The height of the high-speed conveyor (7) is higher than the height of the low-speed conveyor (6).

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