A rotating disc type honeycomb carrier coating device

Abstract

The present invention discloses a turntable type honeycomb carrier coating device, which comprises a coating component and a slurry component for providing slurry to the coating component, wherein the coating component comprises a rotatable turntable, a fixing device for fixing the honeycomb carrier arranged on the periphery of the turntable, and a driving mechanism for driving the turntable to rotate. Since the present invention provides centrifugal force for the honeycomb carrier fixed on the turntable through the rotation of the turntable to remove excess coating slurry on the surface of the honeycomb carrier, and the centrifugal force removal method is relatively stable, the slurry coating is more uniform compared with the prior art, and the occurrence of channel blockage is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of organic waste gas treatment, in particular to a rotating disc type honeycomb carrier coating device. Background Art

[0002] Volatile organic compounds (VOCs) are a type of organic matter that is irritating, teratogenic, carcinogenic, mutagenic, flammable and explosive, and poses a great threat to human health and the sustainable development of the ecological environment. At present, the sources of VOCs emissions include industrial fixed sources, motor vehicle exhaust emissions and daily life sources. Among them, the main method of controlling industrial source VOCs is adsorption. At present, the waste gas treatment processes with better adsorption efficiency and regeneration are honeycomb zeolite fixed bed process and zeolite wheel process. For the honeycomb zeolite fixed bed process, honeycomb zeolite is the core component of the waste gas treatment system and plays a key role in the efficiency of the waste gas treatment process. Its preparation process and preparation means determine the treatment efficiency of the entire waste gas treatment system. The preparation methods of honeycomb zeolite mainly include direct molding method and coating method. Among them, the honeycomb zeolite obtained by direct molding method has poor mechanical strength and is easy to break; while the coating method can select ceramic honeycomb with high mechanical strength as a carrier to ensure the mechanical strength of the honeycomb. Common coating methods mainly include the following steps: impregnation, purging, and drying. However, blowing cannot guarantee the uniform distribution of the coating slurry. On the one hand, the reason is that the viscosity of the slurry is usually large. On the other hand, the reason is that the blowing force cannot be guaranteed to be uniform, which will cause uneven slurry coating thickness in the honeycomb carrier pores, poor product consistency, and the coating is prone to fall off or even pore blockage during the baking process. Summary of the invention

[0003] The purpose of the present invention is to provide a turntable type honeycomb carrier coating device for producing honeycomb zeolite with high efficiency and high quality.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A turntable type honeycomb carrier coating device comprises a coating component and a slurry component for providing slurry to the coating component. The coating component comprises a rotatable turntable, a fixing device arranged at the periphery of the turntable for fixing the honeycomb carrier, and a driving mechanism for driving the turntable to rotate.

[0006] Preferably, the turntable is vertically arranged, and the coating assembly further comprises a container arranged below the turntable, and when the container contains liquid, the fixing device is at least partially immersed in the liquid.

[0007] Further preferably, a protective cover is provided on the upper portion of the container, and the protective cover and the container are combined to form a closed space.

[0008] Further preferably, the protective cover and the inner wall of the container are provided with a hydrophobic coating.

[0009] Preferably, the honeycomb carrier has a plurality of through holes which are parallel to each other, and when the honeycomb carrier is fixedly arranged on the fixing device, the through holes are perpendicular to the diameter of the turntable passing through the through holes.

[0010] Preferably, the slurry assembly includes a slurry storage tank for storing slurry, a conveying mechanism for conveying the slurry in the slurry storage tank to the coating assembly, and a reflux mechanism for returning the slurry in the coating assembly to the slurry storage tank.

[0011] Further preferably, the conveying mechanism is a first pipe connecting the coating component and the slurry storage tank and a liquid conveying pump arranged on the first pipe, and the reflux mechanism is a second pipe connecting the bottom of the coating component and the slurry storage tank and a valve arranged on the second pipe.

[0012] Further preferably, the slurry storage tank is provided with a stirrer for stirring the slurry stored therein.

[0013] Preferably, the coating assembly is located above the slurry assembly.

[0014] Preferably, the turntable is driven to rotate by a motor.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] Since the present invention provides centrifugal force to the honeycomb carrier fixed on the turntable through the rotation of the turntable to remove excess coating slurry on the surface of the honeycomb carrier, and the removal method of centrifugal force is relatively stable, the slurry coating is more uniform than the prior art, and the occurrence of channel blockage is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the present invention.

[0018] In the above drawings: 1. turntable; 2. fixing device; 3. container; 4. protective cover; 5. slurry storage tank; 61. first pipeline; 62. liquid delivery pump; 71. second pipeline; 72. valve; 8. mixer; 9. honeycomb carrier. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0020] See attached Figure 1As shown, a rotating disk type honeycomb carrier coating device includes a coating component and a slurry component for providing slurry to the coating component, and the coating component includes a rotating disk 1 (a bracket supporting the rotating disk is omitted in the figure) and a fixing device 2 for fixing a honeycomb carrier 9 arranged on the periphery of the rotating disk 1, and a driving mechanism for driving the rotating disk 1 to rotate. In this embodiment, the coating component is located above the slurry component, and the rotating disk 1 is driven to rotate by a motor.

[0021] Specifically, the turntable 1 is arranged vertically, and the coating assembly further comprises a container 3 arranged below the turntable 1. When the container 3 contains the slurry, the honeycomb carrier 9 fixed on the turntable 1 is at least partially immersed in the liquid. Usually, the liquid level of the slurry can at least immerse the honeycomb carrier 9 at the bottom of the turntable, so that the honeycomb carrier 9 can be completely immersed in the slurry when rotating. In other embodiments, the turntable can also be placed horizontally or obliquely. Considering the uniformity of the slurry coating, it is preferably placed vertically.

[0022] A protective cover 4 is provided on the upper part of the container 3, and the protective cover 4 and the container 3 are combined to form a closed space.

[0023] The inner wall of the protective cover 4 and the container 3 is provided with a hydrophobic coating (not shown in the drawings). The hydrophobic coating has good hydrophobicity and acid and alkali resistance, which is needed to reduce the residue of slurry on the inner wall and prevent the slurry from corroding the protective cover 4 and the container 3.

[0024] The honeycomb carrier 9 of this embodiment has a plurality of through holes parallel to each other, and when the honeycomb carrier 9 is fixedly arranged on the fixing device 2, the through holes are perpendicular to the diameter of the turntable 1 passing through the through holes. Preferably, the slurry assembly includes a slurry storage tank 5 for storing slurry, a conveying mechanism for conveying the slurry in the slurry storage tank 5 to the coating assembly, and a reflux mechanism for returning the slurry in the coating assembly to the slurry storage tank 5.

[0025] The conveying mechanism is a first pipe 61 connecting the coating component and the slurry storage tank 5 and a liquid conveying pump 62 arranged on the first pipe 61 , and the reflux mechanism is a second pipe 71 connecting the bottom of the coating component and the slurry storage tank 5 and a valve 72 arranged on the second pipe 71 .

[0026] The slurry storage tank 5 is provided with a stirrer 8 for stirring the slurry stored therein, so that the slurry stored therein is kept uniformly dispersed at all times.

[0027] The method for using the rotating disk type honeycomb carrier coating device of this embodiment comprises the following steps:

[0028] 1) Fix the honeycomb carrier 9 on the turntable 1, and make the channel direction of the honeycomb carrier 9 perpendicular to the diameter of the turntable 1 passing through the center thereof;

[0029] 2) Start the motor to make the turntable 1 rotate;

[0030] 3) Pour the prepared slurry into the slurry storage tank 5, start the stirrer 8, start the liquid delivery pump 62 after stirring evenly, open the valve 72, and adjust the opening of the valve 72, so that the slurry liquid level in the container 3 reaches the specified height and stabilizes, and the slurry circulates in the slurry storage tank 5 and the container 3.

[0031] 4) After the honeycomb carrier 9 is coated, the liquid delivery pump 62 is turned off, and the opening of the valve 72 is adjusted to the maximum, and the slurry in the container 3 is recovered into the slurry storage tank 5;

[0032] 5) adjusting the rotation speed of the turntable 1 to remove excess slurry on the honeycomb carrier 9;

[0033] 6) The coated honeycomb carrier 9 is taken off the turntable 1 and placed in a forced air drying oven for drying.

[0034] The turntable type honeycomb carrier coating device of this embodiment provides centrifugal force to the honeycomb carrier 9 fixed on the turntable 1 through the rotation of the turntable 1, so as to remove excess coating slurry on the surface of the honeycomb carrier 9. At the same time, the centrifugal force removal method is relatively stable, and the slurry coating is more uniform compared with the prior art, which can avoid the occurrence of channel blockage.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating disk type honeycomb carrier coating device, comprising a coating component and a slurry component for providing slurry to the coating component, characterized in that: The coating assembly comprises a rotatable turntable, a fixing device arranged at the periphery of the turntable for fixing the honeycomb carrier, and a driving mechanism for driving the turntable to rotate; The turntable is arranged vertically, and the coating assembly further comprises a container arranged below the turntable, when the container contains liquid, the fixing device is at least partially immersed in the liquid, and the honeycomb carrier fixed on the fixing device is at least partially immersed in the liquid, and the liquid can at least immerse the honeycomb carrier at the bottom of the turntable; A protective cover is provided on the upper part of the container, and the protective cover and the container are combined to form a closed space; The honeycomb carrier has a plurality of through holes parallel to each other, and when the honeycomb carrier is fixedly arranged on the fixing device, the through holes are perpendicular to the diameter of the rotating disk passing through the through holes; The coating component is located above the slurry component; The slurry assembly includes a slurry storage tank for storing slurry, a conveying mechanism for conveying the slurry in the slurry storage tank to the coating assembly, and a reflux mechanism for returning the slurry in the coating assembly to the slurry storage tank; The conveying mechanism is a first pipeline connecting the coating assembly and the slurry storage tank and a liquid conveying pump arranged on the first pipeline, and the reflux mechanism is a second pipeline connecting the bottom of the coating assembly and the slurry storage tank and a valve arranged on the second pipeline; The slurry storage tank is provided with a mixer; The turntable is driven to rotate by a motor; The method for using the rotating disk type honeycomb carrier coating device comprises the following steps: 1) Fix the honeycomb carrier on the turntable, and make the channel direction of the honeycomb carrier perpendicular to the diameter of the turntable passing through its center; 2) Start the motor to make the turntable rotate; 3) Pour the prepared slurry into the slurry storage tank, start the mixer, start the liquid delivery pump after stirring evenly, open the valve, and adjust the valve opening. The slurry liquid level in the container reaches the specified height and stabilizes, and the slurry circulates in the slurry storage tank and the container; 4) After the honeycomb carrier is coated, turn off the liquid delivery pump, adjust the valve opening to the maximum, and recover the slurry in the container into the slurry storage tank; 5) Adjust the rotation speed of the turntable to remove excess slurry on the honeycomb carrier; 6) Remove the coated honeycomb carrier from the turntable and place it in a forced air drying oven for drying.

2. A rotating disk type honeycomb carrier coating device according to claim 1, characterized in that: The protective cover and the inner wall of the container are provided with a hydrophobic coating.

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