A spray impregnation apparatus

Abstract

The utility model relates to activated carbon production equipment technical field especially relates to a kind of spray impregnation equipment.The equipment includes rotary impregnation cabin, drive assembly, atomization component and liquid supply component;Rotary impregnation cabin is inclined to be set off horizontal direction, and rotatably set by drive assembly;In the high end on the inclined side of rotary impregnation cabin, set feed inlet, and in the low end on its inclined side, set discharge port;Multiple guide vanes are set on the inner wall of rotary impregnation cabin with interval;Liquid inlet passage is coaxially set on the rotating shaft of drive assembly;The liquid inlet end of liquid inlet passage is communicated with the liquid supply component set in the outside of rotary impregnation cabin, and its liquid outlet end is communicated with the atomization component set in the inside of rotary impregnation cabin.The utility model can realize the uniform impregnation to activated carbon.

Description

Technical Field

[0001] This utility model relates to the technical field of activated carbon production equipment, and in particular to a spray impregnation device. Background Technology

[0002] Activated carbon is widely used in VOCs treatment and desulfurization / denitrification. Its adsorption performance can be significantly enhanced by impregnation with specific chemical reagents. Traditional impregnation methods are mostly immersion and simple spraying, each with the following obvious drawbacks: Immersion method: The activated carbon is completely immersed in the impregnation solution, which takes a long time. The concentration of the impregnation solution will gradually decrease due to the adsorption of the activated carbon, resulting in uneven loading of the activated carbon after each immersion and thus exhibiting different adsorption performance. In addition, the impregnation solution flowing out during the subsequent draining process often contains impurities or is even deteriorated, resulting in waste of the impregnation solution. If the impregnation solution contains heavy metal ions, it will also pollute the environment.

[0003] Spraying method: When spraying on the surface of stationary activated carbon, the sprayed impregnation liquid tends to flow along the path of least resistance, resulting in excessive or insufficient impregnation of the activated carbon in some areas, which is a serious "edge effect". In addition, the sprayed impregnation liquid fails to fully penetrate into the internal pore structure of the activated carbon particles, resulting in excessive impregnation of the surface layer and insufficient impregnation of the inner layer, which is a problem of insufficient penetration.

[0004] Therefore, it is necessary to provide a spray impregnation device to solve the problem of uneven impregnation of activated carbon by traditional impregnation methods. Utility Model Content

[0005] The purpose of this utility model is to provide a spray impregnation device, the specific technical solution of which is as follows: A spray impregnation device includes a rotating impregnation chamber, a drive assembly, an atomizing assembly, and a liquid supply assembly; The rotating impregnation chamber is tilted off the horizontal direction and is rotatable by the drive assembly; a feed inlet is provided at the high end of the tilted side of the rotating impregnation chamber, and a discharge outlet is provided at the low end of the tilted side; multiple guide plates are spaced apart on the inner wall of the rotating impregnation chamber; the length direction of each guide plate is parallel to the axial direction of the rotating impregnation chamber. The drive assembly includes a drive element and a rotating shaft; the fixed end of the drive element is connected to the outer shell disposed outside the rotating immersion chamber; the rotating shaft is coaxially disposed through the upper end of the rotating immersion chamber, with one end disposed outside the rotating immersion chamber and connected to the drive end of the drive element, and the other end disposed inside the rotating immersion chamber; a liquid inlet channel is coaxially disposed on the rotating shaft; the liquid inlet end of the liquid inlet channel is connected to the liquid supply assembly disposed outside the rotating immersion chamber, and its liquid outlet end is connected to the atomizing assembly disposed inside the rotating immersion chamber.

[0006] Optionally, the atomizing assembly includes a main atomizing nozzle and auxiliary atomizing nozzles; the main atomizing nozzle is coaxially and detachably mounted on the rotating shaft and connected to the liquid outlet of the liquid inlet channel; the spray direction of the main atomizing nozzle is the same as the feeding direction of the activated carbon; there are multiple auxiliary atomizing nozzles, which are detachably arranged in a circumferential interval within the rotating impregnation chamber and are respectively connected to the liquid outlet of the liquid inlet channel through liquid guiding pipes; the spray direction of each auxiliary atomizing nozzle is towards the axial direction of the rotating impregnation chamber.

[0007] Optionally, the rotary impregnation chamber includes a chamber body; the chamber body is coaxially rotatably disposed within the outer shell; a first end cap is detachably disposed on the high end of the inclined side of the outer shell near the chamber body; the feed inlet is disposed on the first end cap and communicates with the chamber body; a second end cap is detachably disposed on the low end of the inclined side of the outer shell near the chamber body; the discharge outlet is disposed on the second end cap and communicates with the chamber body; a rotating shaft is coaxially disposed through the first end cap and connected to the first end cap via a bearing, one end of the rotating shaft passing through the first end cap is disposed inside the chamber body and integrally fixedly connected to the chamber body; a connecting shaft is disposed on the end of the chamber body near the second end cap; the connecting shaft passes through the second end cap and is connected to the second end cap via a bearing.

[0008] Optionally, the main body of the cabin includes a first cabin, a second cabin, and a third cabin arranged coaxially; the first cabin and the third cabin are detachably disposed at both ends of the second cabin; the first cabin is disposed near the first end cover; and the third cabin is disposed near the second end cover. It also includes multiple sealing rings; the sealing rings are provided between the first compartment and the second compartment, and between the second compartment and the third compartment.

[0009] Optionally, the spray impregnation device further includes a rotary joint; the rotary joint includes an inner ring joint and an outer ring joint arranged coaxially; the outer wall of the outer ring joint is detachably connected to the liquid inlet channel on the rotating shaft, while its inner wall is rotatably connected to the outer wall of the inner ring joint through a bearing; the inner wall of the inner ring joint is detachably connected to the liquid supply assembly; a sealing ring is also provided between the inner wall of the outer ring joint and the outer wall of the inner ring joint.

[0010] Optionally, the liquid supply assembly includes a liquid storage tank, a liquid supply pipeline, and a metering pump; one end of the liquid supply pipeline is connected to the liquid storage tank, and the other end is detachably connected to the inner wall of the inner ring connector; the metering pump is installed on the liquid supply pipeline.

[0011] Optionally, the rotating immersion chamber is tilted at an angle of 5° to 15° away from the horizontal direction.

[0012] Optionally, the drive unit includes a variable frequency motor.

[0013] Optionally, the spray impregnation equipment further includes a support frame disposed below the rotary impregnation chamber and connected to the outer shell of the rotary impregnation chamber.

[0014] Optionally, the spray impregnation equipment further includes a PLC controller, which is connected to the metering pump and the variable frequency motor.

[0015] The application of the technical solution of this utility model has at least the following beneficial effects: (1) The spray impregnation device provided by this utility model drives the rotating impregnation chamber to rotate through the drive component. At the same time, multiple guide plates arranged at intervals on the inner wall of the rotating impregnation chamber continuously carry the activated carbon particles at the bottom to a high position and then sprinkle them down, forming a continuous "waterfall" tumbling state, so that the activated carbon is fully dispersed. The atomizing component set in the rotating impregnation chamber continuously sprays the impregnation liquid provided by the liquid supply component onto the fully dispersed activated carbon to achieve uniform impregnation. This not only solves the problem of uneven impregnation of activated carbon by traditional impregnation methods, but also enhances the impregnation modification effect. In addition, the rotating impregnation chamber is tilted off the horizontal direction. The feed port is set at the high end of the tilted side of the rotating impregnation chamber, and the discharge port is set at the low end of the tilted side. This not only facilitates the discharge, but also shortens the impregnation time and improves the impregnation efficiency by combining the guide plates and the atomizing component. Furthermore, the use of the atomizing component for spray impregnation of activated carbon in this utility model can greatly save the cost of impregnation liquid.

[0016] (2) This utility model uses an atomizing main nozzle to spray and pre-impregnate the activated carbon that has just entered the rotating impregnation chamber, while the spray from each atomizing auxiliary nozzle forms a "fog curtain" covering the entire cross-section of the rotating impregnation chamber, which sprays and impregnates the activated carbon in the "waterfall flow" tumbling state without dead angles, ensuring that each activated carbon particle can fully and evenly contact the atomized droplets, which not only ensures uniform impregnation, but also greatly improves the utilization rate of impregnation liquid and saves impregnation liquid cost.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a spray impregnation device in one embodiment.

[0020] Figure 2 This is a schematic cross-sectional view of the outer shell, rotating immersion chamber, rotating shaft, and atomizing assembly after installation in the embodiment.

[0021] Figure 3 This is a schematic diagram of the separate structure of the outer shell, rotating immersion chamber, rotating shaft and atomizing component in the embodiment.

[0022] Reference numerals: 1. Rotary immersion chamber; 1.1. Guide plate; 1.2. First chamber; 1.3. Second chamber; 1.4. Third chamber; 2. Drive assembly; 2.1. Drive component; 2.2. Rotary shaft; 2.2.1. Liquid inlet channel; 3. Atomizing assembly; 3.1. Main atomizing nozzle; 3.2. Auxiliary atomizing nozzle; 4. Liquid supply assembly; 4.1. Storage tank; 4.2. Liquid supply pipeline; 4.3. Metering pump; 5. Outer shell; 6. Support frame; 7. First end cap; 8. Second end cap; 9. End cap. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: See Figures 1-3 A spray impregnation device includes a rotating impregnation chamber 1, a drive assembly 2, an atomizing assembly 3, and a liquid supply assembly 4; The rotating impregnation chamber 1 is tilted away from the horizontal direction and is rotatable by the drive assembly 2; a feed inlet (not shown in the figure) is provided on the high end of the tilted side of the rotating impregnation chamber 1, and a discharge outlet (not shown in the figure) is provided on the low end of the tilted side; six guide plates 1.1 are welded at intervals on the inner wall of the rotating impregnation chamber 1; the length direction of each guide plate 1.1 is parallel to the axial direction of the rotating impregnation chamber 1. The drive assembly 2 includes a drive component 2.1 (specifically a variable frequency motor) and a rotating shaft 2.2; the fixed end of the drive component 2.1 is connected to the outer shell 5 disposed outside the rotating immersion chamber 1; the rotating shaft 2.2 is coaxially disposed through the upper end of the rotating immersion chamber 1, with one end disposed outside the rotating immersion chamber 1 and connected to the drive end of the drive component 2.1, and the other end disposed inside the rotating immersion chamber 1; a liquid inlet channel 2.2.1 is coaxially disposed on the rotating shaft 2.2; the liquid inlet end of the liquid inlet channel 2.2.1 is connected to the liquid supply assembly 4 disposed outside the rotating immersion chamber 1, and its liquid outlet end is connected to the atomizing assembly 3 disposed inside the rotating immersion chamber 1.

[0025] The atomizing assembly 3 includes a main atomizing nozzle 3.1 and auxiliary atomizing nozzles 3.2. The main atomizing nozzle 3.1 is coaxially and detachably mounted on the rotating shaft 2.2 via bolts, and is connected to the outlet end of the liquid inlet channel 2.2.1. The spray direction of the main atomizing nozzle 3.1 is the same as the feeding direction of the activated carbon. There are six auxiliary atomizing nozzles 3.2, which are detachably arranged in the rotating impregnation chamber 1 at circumferential intervals via bolts, and are connected to the outlet end of the liquid inlet channel 2.2.1 via liquid guiding pipes. Each liquid guiding pipe is arranged along the wall inside the rotating impregnation chamber 1. The spray direction of each auxiliary atomizing nozzle 3.2 is towards the axial direction of the rotating impregnation chamber 1.

[0026] The rotating immersion chamber 1 includes a main body; the main body is coaxially and rotatably disposed within the outer shell 5; specifically, circumferential limiting grooves are respectively provided on both ends of the inner wall of the outer shell 5, and bearings are provided in the two circumferential limiting grooves, with the inner rings of both bearings connected to the main body; a first end cover 7 is detachably disposed on the high end of the inclined side of the outer shell 5 near the main body of the chamber via bolts and a flange; the feed inlet is disposed on the first end cover 7 and communicates with the main body of the chamber; a second end cover 8 is detachably disposed on the low end of the inclined side of the outer shell 5 near the main body of the chamber via bolts and a flange; the discharge outlet is disposed on the second end cover 8 and communicates with the main body of the chamber; a rotating shaft 2.2 is coaxially disposed through the first end cover 7 and connected to the first end cover 7 via a bearing, one end of the rotating shaft 2.2 passing through the first end cover 7 is disposed inside the main body of the chamber and integrally fixedly connected to the main body of the chamber; a connecting shaft is disposed on the end of the main body of the chamber near the second end cover 8; the connecting shaft is disposed through the second end cover 8 and connected to the second end cover 8 via a bearing. An end cap 9 is provided at one end of the connecting shaft that passes through the second end cap 8 to protect the end of the connecting shaft.

[0027] The main body of the cabin includes a first cabin 1.2, a second cabin 1.3, and a third cabin 1.4 arranged coaxially; the first cabin 1.2 and the third cabin 1.4 are detachably mounted on both axial ends of the second cabin 1.3 by bolts and flanges, respectively, for easy disassembly and maintenance; the first cabin 1.2 is located near the first end cover 7; the third cabin 1.4 is located near the second end cover 8; It also includes multiple sealing rings; the sealing rings are provided between the first compartment 1.2 and the second compartment 1.3, and between the second compartment 1.3 and the third compartment 1.4, to prevent leakage.

[0028] The spray impregnation equipment also includes a rotary joint (model MQR1-M5, not shown in the figure); the rotary joint includes an inner ring joint and an outer ring joint arranged coaxially; the outer wall of the outer ring joint is detachably connected to the liquid inlet channel 2.2.1 on the rotating shaft 2.2, while its inner wall is rotatably connected to the outer wall of the inner ring joint through a bearing; the inner wall of the inner ring joint is detachably connected to the liquid supply assembly 4; a sealing ring is also provided between the inner wall of the outer ring joint and the outer wall of the inner ring joint.

[0029] The liquid supply assembly 4 includes a liquid storage tank 4.1, a liquid supply pipeline 4.2, and a metering pump 4.3; one end of the liquid supply pipeline 4.2 is connected to the liquid storage tank 4.1, and the other end is detachably connected to the inner wall of the inner ring connector; the metering pump 4.3 is installed on the liquid supply pipeline 4.2.

[0030] The rotating impregnation chamber 1 is tilted at an angle of 10° away from the horizontal direction, which facilitates material discharge.

[0031] The spray impregnation equipment also includes a support frame 6, which is disposed below the rotary impregnation chamber 1 and connected to the outer shell 5 of the rotary impregnation chamber 1.

[0032] The spray impregnation equipment also includes a PLC controller (not shown in the figure), which is connected to the metering pump 4.3 and the variable frequency motor to facilitate intelligent control.

[0033] The operation process of the spray impregnation equipment is as follows: After activated carbon is added into the rotary impregnation chamber 1 through the feed inlet, the metering pump 4.3 and the variable frequency motor are started by the PLC controller. The variable frequency motor drives the rotary impregnation chamber 1 to rotate. Multiple guide plates 1.1, which are spaced apart on the inner wall of the rotary impregnation chamber 1, continuously carry the activated carbon particles at the bottom to a high place and then drop them, forming a continuous "waterfall" tumbling state, so that the activated carbon is fully dispersed. The atomizing component 3, which is set in the rotary impregnation chamber 1, continuously sprays the impregnation liquid provided by the liquid supply component 4 onto the fully dispersed activated carbon to achieve uniform impregnation. Finally, the uniformly impregnated activated carbon is discharged and collected through the discharge port.

[0034] The spray impregnation equipment processes 100 kg of 4 mm diameter coal-based activated carbon using a 10% (w / w) phosphoric acid solution. The rotation speed of the impregnation chamber 1 is set to 12 rpm by a variable frequency motor, the metering pump flow rate is 15 L / min (4.3 MPa), and the spray pressure is 0.3 MPa. The material is discharged after 5 minutes of operation. Test results show that the coefficient of variation for impregnation uniformity is 4.5%, the phosphoric acid utilization rate reaches 97.8%, and the activated carbon particle breakage rate is less than 0.5%.

[0035] Among them, the coefficient of variation of impregnation uniformity is used to characterize the degree of uniformity of the impregnation solution distribution among activated carbon particles. The lower the coefficient of variation, the better the uniformity.

[0036] The test method and steps for the coefficient of variation of impregnation uniformity are as follows: Ten samples were randomly collected from the batch of impregnated activated carbon.

[0037] The content of the target element (e.g., phosphorus, corresponding to phosphate impregnation) in each sample was quantitatively determined using inductively coupled plasma mass spectrometry (ICP-MS). The mean (μ) and standard deviation (σ) of the target element content in all samples were calculated. The coefficient of variation for impregnation uniformity was calculated as: CV(%) = (σ / μ) × 100%.

[0038] Phosphoric acid utilization rate refers to the percentage of liquid actually adsorbed by activated carbon to the initial total amount added, reflecting the utilization efficiency and degree of saving of phosphoric acid solution.

[0039] The test methods and procedures for phosphoric acid utilization are as follows: Accurately weigh or measure the total volume and mass of the phosphoric acid solution before impregnation (based on the mass m of pure phosphoric acid converted from the concentration).

[0040] Phosphoric acid utilization rate (%) = (mass of activated carbon after impregnation - mass of activated carbon before impregnation) / m × 100%.

[0041] The activated carbon particle breakage rate refers to the proportion of activated carbon particles that break due to mechanical action during the impregnation process.

[0042] The test method and steps for the breakage rate of activated carbon particles are as follows: The particle size distribution of activated carbon samples before and after impregnation was tested using a standard vibrating sieve machine and a set of standard sieves.

[0043] Damage determination: "Damaged particles" are defined as particles whose particle size is lower than the original average particle size by a certain percentage (e.g., <50%).

[0044] Calculation formula: Breakage rate (%) = (Mass of broken particles / Mass of impregnated activated carbon sample) × 100%.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A spray impregnation device, characterized in that, It includes a rotating immersion chamber (1), a drive assembly (2), an atomizing assembly (3), and a liquid supply assembly (4). The rotating impregnation chamber (1) is inclined off the horizontal direction and is rotatable by the drive assembly (2); a feed inlet is provided on the high end of the inclined side of the rotating impregnation chamber (1), and a discharge outlet is provided on the low end of the inclined side; a plurality of guide plates (1.1) are spaced apart on the inner wall of the rotating impregnation chamber (1); the length direction of each guide plate (1.1) is parallel to the axial direction of the rotating impregnation chamber (1); The drive assembly (2) includes a drive element (2.1) and a rotating shaft (2.2); the fixed end of the drive element (2.1) is connected to the outer shell (5) disposed outside the rotating immersion chamber (1); the rotating shaft (2.2) is coaxially disposed through the high end of the rotating immersion chamber (1), with one end disposed outside the rotating immersion chamber (1) and connected to the drive end of the drive element (2.1), and the other end disposed inside the rotating immersion chamber (1); a liquid inlet channel (2.2.1) is coaxially disposed on the rotating shaft (2.2); the liquid inlet end of the liquid inlet channel (2.2.1) is connected to the liquid supply assembly (4) disposed outside the rotating immersion chamber (1), and its liquid outlet end is connected to the atomizing assembly (3) disposed inside the rotating immersion chamber (1).

2. The spray impregnation equipment as described in claim 1, characterized in that, The atomizing component (3) includes a main atomizing nozzle (3.1) and an auxiliary atomizing nozzle (3.2). The main atomizing nozzle (3.1) is coaxially and detachably mounted on the rotating shaft (2.2) and is connected to the liquid outlet of the liquid inlet channel (2.2.1). The spray direction of the main atomizing nozzle (3.1) is the same as the feeding direction of the activated carbon. There are multiple auxiliary atomizing nozzles (3.2), which are detachably arranged in the rotating impregnation chamber (1) at circumferential intervals and are connected to the liquid outlet of the liquid inlet channel (2.2.1) through liquid guiding pipes. The spray direction of each auxiliary atomizing nozzle (3.2) is towards the axial direction of the rotating impregnation chamber (1).

3. The spray impregnation equipment as described in claim 2, characterized in that, The rotating immersion chamber (1) includes a chamber body; the chamber body is coaxially rotatably disposed inside the outer shell (5); a first end cap (7) is detachably disposed on the high end of the inclined side of the outer shell (5) near the chamber body; the feed port is disposed on the first end cap (7) and communicates with the chamber body; a second end cap (8) is detachably disposed on the low end of the inclined side of the outer shell (5) near the chamber body; the discharge port is disposed on the second end cap (8) and communicates with the chamber body; the rotating shaft (2.2) is coaxially disposed through the first end cap (7) and connected to the first end cap (7) by a bearing, one end of the rotating shaft (2.2) passing through the first end cap (7) is disposed inside the chamber body and integrally fixedly connected to the chamber body; a connecting shaft is disposed on the end of the chamber body near the second end cap (8); the connecting shaft is disposed through the second end cap (8) and connected to the second end cap (8) by a bearing.

4. The spray impregnation equipment as described in claim 3, characterized in that, The main body of the cabin includes a first cabin (1.2), a second cabin (1.3), and a third cabin (1.4) arranged coaxially; the first cabin (1.2) and the third cabin (1.4) are detachably arranged at both ends of the second cabin (1.3); the first cabin (1.2) is arranged close to the first end cover (7); the third cabin (1.4) is arranged close to the second end cover (8); It also includes multiple sealing rings; the sealing rings are provided between the first compartment (1.2) and the second compartment (1.3), and between the second compartment (1.3) and the third compartment (1.4).

5. The spray impregnation equipment according to any one of claims 1 to 4, characterized in that, It also includes a rotary joint; the rotary joint includes an inner ring joint and an outer ring joint arranged coaxially; the outer wall of the outer ring joint is detachably connected to the liquid inlet channel (2.2.1) on the rotating shaft (2.2), while its inner wall is rotatably connected to the outer wall of the inner ring joint through a bearing; the inner wall of the inner ring joint is detachably connected to the liquid supply assembly (4); a sealing ring is also provided between the inner wall of the outer ring joint and the outer wall of the inner ring joint.

6. The spray impregnation equipment as described in claim 5, characterized in that, The liquid supply assembly (4) includes a liquid storage tank (4.1), a liquid supply pipeline (4.2), and a metering pump (4.3); one end of the liquid supply pipeline (4.2) is connected to the liquid storage tank (4.1), and the other end is detachably connected to the inner wall of the inner ring connector; the metering pump (4.3) is installed on the liquid supply pipeline (4.2).

7. The spray impregnation equipment as described in claim 6, characterized in that, The rotating immersion chamber (1) is tilted at an angle of 5° to 15° away from the horizontal direction.

8. The spray impregnation equipment as described in claim 7, characterized in that, The drive unit (2.1) includes a variable frequency motor.

9. The spray impregnation equipment as described in claim 8, characterized in that, It also includes a support frame (6), which is located below the rotary immersion chamber (1) and connected to the outer shell (5) of the rotary immersion chamber (1).

10. The spray impregnation apparatus as described in claim 9, characterized in that, It also includes a PLC controller, which is connected to the metering pump (4.3) and the variable frequency motor.

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