Conical rotating packed bed VOC (volatile organic compound) adsorption device

Abstract

The utility model belongs to the technical field of pollutant removal, and particularly relates to a VOC (volatile organic compound) adsorption device of a conical rotating packed bed. A conical rotating packed bed VOC adsorption device comprises a VOC gas holder, a rotor flow meter and a conical rotating packed bed, the conical rotating packed bed comprises a lower area, a middle area and an upper area, and the conical rotating packed bed is provided with a VOC inlet and a VOC outlet; a filler adsorbent I is arranged in the lower area, a filler adsorbent II is arranged in the middle area, and a filler adsorbent III is arranged in the upper area. The VOC adsorption device based on the conical rotating packed bed has the advantages that VOC can be effectively removed based on the conical rotating packed bed, effective coupling of different VOCs and adsorbents can be achieved through sectional adsorption, graded adsorption of the VOCs is achieved, and the problem that a traditional fixed bed is small in adsorption treatment capacity is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pollutant removal, and particularly relates to a conical rotating packing bed for adsorbing VOC. Background Technique

[0002] With the rapid development of coal chemical industry, the emission of a large amount of VOCs causes serious environmental pollution. Therefore, the state has put forward more stringent emission standards. Therefore, the high-precision and efficient removal of VOCs is particularly important. At present, for low-concentration and large-volume VOC gases, adsorption is an economical and effective removal method. However, the adsorption in traditional fixed beds has the disadvantage of small processing capacity, which limits its further development.

[0003] Therefore, it is necessary to provide a new conical rotating packing bed for adsorbing VOC to solve the above technical problems. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a conical rotating packing bed for adsorbing VOC, which can effectively remove VOC. Through staged adsorption, effective coupling of different VOCs and adsorbents can be realized, and hierarchical absorption of VOC can be achieved, solving the problem of small processing capacity of traditional fixed bed adsorption.

[0005] To solve the above technical problems, a conical rotating packing bed for adsorbing VOC provided by the utility model adopts the following technical scheme:

[0006] A conical rotating packing bed for adsorbing VOC includes a VOC gas holder, a rotameter, and a conical rotating packing bed. The conical rotating packing bed includes a lower region, a middle region, and an upper region. The conical rotating packing bed is provided with a VOC inlet and a VOC outlet.

[0007] The lower region is provided with a packing adsorbent I, the middle region is provided with a packing adsorbent II, and the upper region is provided with a packing adsorbent III.

[0008] The VOC gas holder is communicated with the VOC inlet on the conical rotating packing bed through a connecting pipe and a rotameter.

[0009] As a further scheme of the utility model, the packing adsorbent I, the packing adsorbent II, and the packing adsorbent III are any one or several of activated carbon, zeolite molecular sieve, silica gel, and activated alumina.

[0010] As a further scheme of the utility model, the packing heights in the lower region, the middle region, and the upper region are the same, and the packing width in the upper region is one-third to one-sixth of the packing width in the lower region.

[0011] As a further solution of the present utility model, the width of the packing in the middle region is one-half to one-fourth of the width of the packing in the bottom region.

[0012] As a further solution of the present utility model, a rotor is provided on the VOC gas holder.

[0013] As a further solution of the present utility model, the widths of the packing adsorbent one, the packing adsorbent two, and the packing adsorbent three can be adjusted according to the concentration of VOC.

[0014] Compared with the related art, the conical rotating packing bed adsorption VOC device provided by the present utility model has the following beneficial effects:

[0015] Based on the conical rotating packing bed, the present utility model can effectively remove VOC. Through segmented adsorption, effective coupling of different VOCs and adsorbents can be achieved, realizing the hierarchical absorption of VOC and solving the problem of small treatment capacity of traditional fixed bed adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. Among them:

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a process schematic of the present utility model Figure 1 ;

[0019] Figure 3 is a process schematic of the present utility model Figure 2 .

[0020] In the figure: 1, VOC gas holder; 2, rotameter; 3, VOC inlet; 4, packing adsorbent one; 5, packing adsorbent two; 6, packing adsorbent three; 7, VOC outlet; 8, conical rotating packing bed; 9, rotor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Hereinafter, this application will be described in detail with reference to the drawings and in conjunction with the embodiments. Each example is provided by way of explanation of this application rather than a limitation of this application. In fact, those skilled in the art will clearly understand that modifications and variations can be made to this application without departing from the scope or spirit of this application. For example, the features shown or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the embodiments of the present utility model shall fall within the scope of protection of the embodiments of the present utility model.

[0022] Example

[0023] Please refer to Figure 1 、 Figure 2 and Figure 3 A conical rotating packed bed adsorption device for VOCs, including a VOC gas holder 1, a rotameter 2 and a conical rotating packed bed 8. The conical rotating packed bed 8 includes a lower region, a middle region and an upper region. A VOC inlet 3 and a VOC outlet 7 are provided on the conical rotating packed bed 8;

[0024] The lower region is provided with a first packing adsorbent 4, the middle region is provided with a second packing adsorbent 5, and the upper region is provided with a third packing adsorbent 6;

[0025] The VOC gas holder 1 is communicated with the VOC inlet 3 on the conical rotating packed bed 8 through a connecting pipe and a rotameter 2.

[0026] The first packing adsorbent 4, the second packing adsorbent 5 and the third packing adsorbent 6 are any one or several of activated carbon, zeolite molecular sieve, silica gel and activated alumina.

[0027] The packing heights in the lower region, the middle region and the upper region are the same. The width of the packing in the upper region is one-third to one-sixth of the width of the packing in the lower region.

[0028] The width of the packing in the middle region is one-half to one-fourth of the width of the packing in the bottom region.

[0029] A rotor 9 is provided on the VOC gas holder 1.

[0030] The widths of the first packing adsorbent 4, the second packing adsorbent 5 and the third packing adsorbent 6 can be adjusted according to the concentration of VOC.

[0031] VOC enters the conical rotating packed bed 8 from the VOC gas holder 1 after being metered by the connecting pipe and the rotameter 2. A three-stage adsorption process is completed in the conical rotating packed bed 8, and then the purified gas is obtained. In this process, the adsorption rate in the conical rotating packed bed 8 can be effectively controlled by the width of the packing layer and the rotation speed, realizing the high-precision and efficient removal of VOC gas in stages. In this process, the thickness of the packing layer, the type of adsorbent and the rotation speed are controllable, and the requirements for different VOC removal performances can be effectively realized.

[0032] The gas containing VOC enters the lower region of the conical rotating packing bed 8 for primary removal of VOC. This process is carried out at a large air volume and a low rotation speed. Subsequently, the once-purified VOC gas enters the middle region, where it is further adsorbed by the zeolite molecular sieve. The remaining unpurified VOC is finally adsorbed in the upper region under the action of activated alumina, and finally purified gas is obtained. In this process, VOC can be removed with high efficiency and high precision through a three-stage adsorption process.

[0033] The conical rotating packing bed 8 has a strong mass transfer rate and can effectively remove VOC. Through segmented adsorption, effective coupling of different VOCs and adsorbents can be achieved, realizing the fractional absorption of VOC and solving the problem of small treatment capacity of traditional fixed-bed adsorption.

[0034] Fractional adsorption of VOC is realized in the conical rotating packing bed 8, improving the removal efficiency of VOC and reducing the amount of adsorbent used. The packing widths of the upper, middle, and lower adsorption regions are conducive to the fractional adsorption of VOC, having the advantages of high adsorption efficiency and small pressure drop.

[0035] It should be noted that the device structure and drawings of the present utility model mainly describe the principle of the present utility model. Based on this design principle, the settings of the power mechanism, power supply system, and control system of the device are not fully described. However, on the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system, and control system can be clearly known. The control mode of the application document is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art.

[0036] The standard parts used can be purchased from the market and can also be customized according to the description of the specification and drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the components known to those skilled in the art, their structures and principles can all be learned through technical manuals or obtained through conventional experimental methods.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, or directly or indirectly applied. In other related technical fields, the scope of the present utility model is defined by the appended claims and their equivalents, and is equally included within the scope of the patent protection of the present utility model.

Claims

1. A conical rotating packing bed adsorption device for VOC, characterized in that It includes a VOC gas holder, a rotameter, and a conical rotating packing bed. The conical rotating packing bed includes a lower region, a middle region, and an upper region. The conical rotating packing bed is provided with a VOC inlet and a VOC outlet. The lower region is provided with packing adsorbent one, the middle region is provided with packing adsorbent two, and the upper region is provided with packing adsorbent three. The VOC gas holder is communicated with the VOC inlet on the conical rotating packing bed through a connecting pipe and a rotameter.

2. The conical rotating packing bed VOC adsorption device according to claim 1, characterized in that: The packing adsorbent one, packing adsorbent two, and packing adsorbent three are any one or several of activated carbon, zeolite molecular sieve, silica gel, and activated alumina.

3. The VOC adsorption device with a conical rotating packing bed according to claim 1, characterized in that: The packing heights in the lower region, middle region, and upper region are the same. The packing width in the upper region is one-third to one-sixth of the packing width in the lower region.

4. The conical rotating packing bed adsorption VOC device according to claim 3, characterized in that: The packing width in the middle region is one-half to one-fourth of the packing width in the bottom region.

5. The VOC adsorption device with a conical rotating packing bed according to claim 1, characterized in that: The VOC gas holder is provided with a rotor.

6. The VOC adsorption device with a conical rotating packing bed according to claim 1, characterized in that: The widths of the packing adsorbent one, packing adsorbent two, and packing adsorbent three can be adjusted according to the concentration of VOC.

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