Energy-saving adsorption equipment for VOCs (Volatile Organic Compounds) treatment

Abstract

The utility model discloses energy-saving adsorption equipment for VOCs (Volatile Organic Compounds) treatment, belongs to the technical field of VOCs treatment, and solves the problem that VOCs collected by a zeolite rotating wheel are distributed excessively dispersedly due to random flow of the VOCs in the existing adsorption equipment. The adsorption equipment comprises a pretreatment assembly, a conveying pipe and a zeolite rotating wheel shell, the conveying pipe is mounted at the end part of the pretreatment assembly, and the zeolite rotating wheel shell is mounted on the conveying pipe; a zeolite rotating wheel shell is arranged at the end of the conveying pipe, a zeolite rotating wheel assembly is installed in the zeolite rotating wheel shell and mainly composed of fan-shaped zeolite pieces, a separation frame and a sealing attaching strip, the separation frame is installed in the zeolite rotating wheel shell, the fan-shaped zeolite pieces are installed on the separation frame at equal intervals, and the fan-shaped zeolite pieces are isolated from one another. The fan-shaped zeolite pieces are arranged in the zeolite runner shell to prevent adsorbed VOCs from flowing in the fan-shaped zeolite pieces, sealing attaching strips are symmetrically installed on the side wall of the partition frame at equal intervals, the sealing attaching strips are attached to the inner wall of the zeolite runner shell, and the side face areas of the fan-shaped zeolite pieces are sealed to form sealing areas.

Description

TECHNICAL FIELD

[0001] The utility model belongs to VOCs processing technical field, specifically related to a kind of energy-saving adsorption equipment for VOCs processing. BACKGROUND

[0002] Volatile organic compounds are referred to as VOCs, which are organic compounds with high saturated vapor pressure, low boiling point and small molecular weight under standard conditions, and are easy to volatilize at room temperature. Such substances are one of the main pollutants of the atmosphere. When VOCs are treated, special adsorption equipment is used for purification treatment. The current purification adsorption equipment is mainly composed of three parts, including a pretreatment zone, a zeolite rotary wheel treatment zone and an RTO purification zone. The pretreatment zone is used to filter particulate matter in the atmosphere. Then the treated gas containing VOCs is contacted with the zeolite rotary wheel. The VOCs contained in the gas are adsorbed by the zeolite rotary wheel and then desorbed in the desorption zone before being transported to the RTO equipment for final purification treatment.

[0003] The main function of the zeolite rotary wheel is to adsorb VOCs in the polluted gas, so that the zeolite rotary wheel in the desorption zone contains a large amount of VOCs. The overall concentration of VOCs desorbed by the desorption zone is high, which facilitates the subsequent RTO equipment for the concentrated treatment of VOCs. Therefore, in order to efficiently treat VOCs, it is necessary to ensure that a large amount of VOCs is adsorbed in the zeolite rotary wheel entering the desorption zone.

[0004] The existing zeolite rotary wheel operates at a predetermined speed. When waste gas enters the adsorption equipment, the zeolite rotary wheel separately adsorbs VOCs in the waste gas. This method has some problems in actual use. Specifically, the existing zeolite rotary wheel is integrated and has a disc structure. After the waste gas enters the adsorption equipment, due to the lack of sealing and blocking, the polluted gas will flow freely in the adsorption equipment, resulting in a decrease in the total amount of VOCs adsorbed in the area where the zeolite rotary wheel should concentrate the adsorption of VOCs in the gas. The VOCs in the waste gas are adsorbed by the zeolite rotary wheel as a whole. The adsorption of VOCs by the zeolite rotary wheel is too dispersed. When the zeolite rotary wheel part enters the desorption zone (i.e. heating zone), the amount of VOCs adsorbed in this part is small, resulting in a small total amount of VOCs discharged at a time. This means that the amount of VOCs treated by single desorption is small. Because desorption requires heating, it leads to waste of energy. INVENTION CONTENTS

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0007] An energy-saving adsorption device for VOCs treatment includes a pretreatment component, a delivery pipe, and a zeolite rotor housing. The zeolite rotor housing is located on the side of the pretreatment component, and a delivery pipe is installed between the pretreatment component and the zeolite rotor housing. The pretreatment component draws in external waste gas and preliminarily filters particulate impurities in the waste gas. The delivery pipe inputs the filtered waste gas into the zeolite rotor housing. A zeolite rotor assembly is installed inside the zeolite rotor housing, and the zeolite rotor assembly performs zoned adsorption of VOCs in the waste gas entering the zeolite rotor housing.

[0008] As a preferred technical solution of this utility model, the zeolite rotor assembly mainly consists of fan-shaped zeolite components, a separator, and sealing strips. The separator serves as the support for the zeolite rotor assembly and rotates slowly inside the zeolite rotor housing. Fan-shaped zeolite components are equidistantly installed on the separator. Multiple sets of fan-shaped zeolite components are arranged, and each set of fan-shaped zeolite components is isolated from each other. After the fan-shaped zeolite components adsorb VOCs, VOCs cannot flow into other fan-shaped zeolite components. Sealing strips are symmetrically and equidistantly installed on the side wall of the separator. The sealing strips adhere to the inner wall of the zeolite rotor housing and seal the space between each set of fan-shaped zeolite components.

[0009] As a preferred technical solution of this utility model, the number of sealing strips is twice the number of fan-shaped zeolite components. The sealing strips are respectively arranged on both sides of the fan-shaped zeolite components, and the sealing strips seal and shield the space between the zeolite rotor shell and the fan-shaped zeolite components.

[0010] As a preferred technical solution of this utility model, a heating component is provided inside the zeolite rotor shell to heat a single set of fan-shaped zeolite pieces. The heating component is set on the zeolite rotor assembly to form a heating zone. The fan-shaped zeolite pieces rotating out from the heating zone enter the cooling zone to dissipate excess heat.

[0011] As a preferred technical solution of this utility model, the zeolite rotor shell includes an adsorption chamber, a waste gas output pipe and a sealing baffle. The adsorption chamber is located on the side of the pretreatment component, and a sealing baffle is installed at the opening on the side of the adsorption chamber. The sealing baffle and the adsorption chamber form a sealed space. The zeolite rotor assembly rotates inside the adsorption chamber, and a waste gas output pipe is installed on the side of the adsorption chamber to discharge the remaining waste gas.

[0012] As a preferred technical solution of this utility model, the exhaust gas outlet pipe and the exhaust port of the conveying pipe are flush. After the conveying pipe inputs the exhaust gas into the adsorption chamber, the exhaust gas enters the exhaust gas outlet pipe after being adsorbed and treated by the fan-shaped zeolite element, and is directly discharged from the exhaust gas outlet pipe.

[0013] As a preferred technical solution of this utility model, the pretreatment component includes a filter chamber, a connecting end, and filter plates. The filter chamber is located on the side of the zeolite rotor shell. Filter plates for filtering particulate impurities in the exhaust gas are installed at equal intervals inside the filter chamber. Multiple sets of filter plates are provided, and each set of filter plates is arranged in order according to the size of the filtered particles. A connecting end is installed at the end of the filter chamber, and the connecting end introduces external exhaust gas into the filter chamber to be filtered by the filter plates.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention modifies the traditional zeolite rotor structure by incorporating a zeolite rotor assembly. The original integrated zeolite rotor is divided into multiple fan-shaped zeolite components, each separated by a partition frame and sealing strip. This prevents the sealing strip from tightly adhering to the inner wall of the zeolite rotor shell, ensuring each group of fan-shaped zeolite components is within a sealed area. When waste gas enters the zeolite rotor shell through the delivery pipe, it is concentrated and adsorbed by the fan-shaped zeolite components in the current sealed area, efficiently collecting VOCs from the waste gas. This centralized collection of VOCs facilitates subsequent heating and discharge of the collected VOCs, avoiding the problem of insufficient VOCs discharged at one time due to overly dispersed VOCs distribution, and requiring multiple re-entries of the fan-shaped zeolite components into the heating zone to remove residual VOCs. This increases the amount of VOCs desorbed per cycle, thereby reducing the number of desorption cycles for the same total VOCs, thus achieving overall energy saving in the adsorption equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of the energy-saving adsorption device of this utility model.

[0017] Figure 2 This is a perspective view of the zeolite rotor shell structure of this utility model.

[0018] Figure 3 This is a perspective view of the structure of the sealed chamber and zeolite rotor assembly of this utility model.

[0019] Figure 4 This is a schematic diagram of the zeolite rotor assembly in this utility model.

[0020] Figure 5 This is a diagram showing the distribution of the heating and cooling zones on the zeolite rotor assembly of this utility model.

[0021] Figure 6 This is a side view of the zeolite rotor assembly structure of this utility model.

[0022] Figure 7 This is a perspective view of the pretreatment component and sealing baffle structure of this utility model.

[0023] Figure 8 This is a perspective view of the pretreatment component structure of this utility model.

[0024] The correspondence between the labels and component names in the attached figures is as follows:

[0025] 1. Pretreatment components; 11. Filter chamber; 12. Connecting end; 13. Filter plate; 2. Conveying pipe; 3. Zeolite rotor housing; 31. Adsorption chamber; 32. Waste gas output pipe; 33. Sealing baffle; 4. Collection pipe; 5. Fan-shaped zeolite component; 6. Separator; 7. Sealing strip. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0029] like Figure 1The diagram shows the structure of the energy-saving adsorption device for VOCs treatment in this embodiment. This adsorption device centrally adsorbs VOCs from the input waste gas, preventing the waste gas from flowing around inside the device and ensuring that each area of ​​the zeolite rotor fully collects and adsorbs the VOCs. As the zeolite rotor rotates, the VOCs adsorbed by the rotor are heated and desorbed before being discharged. The adsorption device includes a pretreatment component 1, a conveying pipe 2, and a zeolite rotor housing 3. The conveying pipe 2 is installed at the end of the pretreatment component 1. After external waste gas is input into the pretreatment component 1, the pretreatment component 1 filters particulate impurities from the waste gas through its own operation. The zeolite rotor housing 3 is located at the end of the conveying pipe 2, and the waste gas filtered by the pretreatment component 1 is input into the zeolite rotor housing 3 through the conveying pipe 2. Inside the rotor housing 3, a zeolite rotor assembly is installed to centrally adsorb VOCs in the exhaust gas. After the zeolite rotor assembly has finished adsorbing the VOCs, it rotates at an overall angle, moving the area with adsorbed VOCs to the heating zone in the zeolite rotor housing 3. Under high temperature, the VOCs adsorbed in the zeolite rotor assembly are discharged. A collection pipe 4 is installed on the zeolite rotor housing 3, and the end of the collection pipe 4 is connected to the RTO equipment. In this embodiment, the RTO equipment specifically refers to a regenerative thermal oxidizer. When the VOCs treated by the zeolite rotor assembly enter the RTO equipment, the operation of the combustion components in the RTO equipment heats the VOCs input into the RTO equipment to above 760°C, causing the VOCs to oxidize and decompose, thus achieving stable treatment of VOCs.

[0030] As attached Figure 8 As shown, this is a schematic diagram of the pretreatment component 1 in this embodiment. The pretreatment component 1 includes a filter chamber 11, a connecting end 12, and a filter plate 13. The filter chamber 11 is disposed on the side of the zeolite rotor housing 3. Filter plates 13 are installed equidistantly inside the filter chamber 11. The filter plates 13 filter the exhaust gas entering the filter chamber 11 and treat the particulate impurities in the exhaust gas to prevent the particulate impurities from entering the subsequent zeolite rotor assembly along with the exhaust gas and affecting the normal operation of the zeolite rotor assembly. The connecting end 12 is installed on the side of the filter chamber 11. The exhaust gas enters the filter chamber 11 through the connecting end 12. The side of the filter chamber 11 opposite to the connecting end 12 is connected to the conveying pipe 2. The exhaust gas treated by the filter chamber 11 is input into the zeolite rotor housing 3 through the conveying pipe 2.

[0031] In this embodiment, multiple sets of filter plates 13 are provided, and the filter holes of the multiple sets of filter plates 13 are of different sizes. They are installed in the filter chamber 11 in descending order of size. With the use of multiple sets of filter plates 13, the particulate matter in the exhaust gas is filtered step by step.

[0032] As attached Figure 2As shown, this is a schematic diagram of the zeolite rotor housing 3 in this embodiment. The zeolite rotor housing 3 includes an adsorption chamber 31, a waste gas output pipe 32, and a sealing baffle 33. The pretreatment component 1 has an adsorption chamber 31 on its side. A sealing baffle 33 is installed at the opening on the side of the adsorption chamber 31. The sealing baffle 33 seals and blocks the internal space of the adsorption chamber 31. A waste gas output pipe 32 is installed at the end of the adsorption chamber 31. After the conveying pipe 2 inputs the waste gas into the adsorption chamber 31, the zeolite rotor assembly in the adsorption chamber 31 collects and adsorbs the VOCs in the waste gas, while the remaining gas is directly discharged through the waste gas output pipe 32, allowing the zeolite rotor assembly to mainly collect VOCs separately.

[0033] In this embodiment, an electric heating plate is installed in the adsorption chamber 31 to heat the zeolite rotor assembly. The electric heating plate continuously heats the target area of ​​the zeolite rotor assembly. After the zeolite rotor assembly has completed the adsorption of VOCs, the zeolite rotor assembly rotates slowly inside the adsorption chamber 31, allowing the adsorbed VOCs to enter the heating zone to receive heating. After being heated, the VOCs are desorbed and collected by the collection pipe 4 and input into the RTO device to complete the VOCs treatment.

[0034] As attached Figure 4 , Figure 5 and Figure 6 As shown, this is a schematic diagram of the zeolite rotor assembly in this embodiment. The zeolite rotor assembly mainly consists of fan-shaped zeolite components 5, a separator frame 6, and sealing strips 7. The separator frame 6 is installed inside the adsorption chamber 31 and consists of multiple isolation and fixing supports. Multiple fan-shaped zeolite components 5 for adsorbing VOCs in waste gas are installed at equal intervals on the separator frame 6. Sealing strips 7 are symmetrically and equally spaced on both sides of the separator frame 6. Multiple sets of sealing strips 7 are respectively attached to the side wall of the sealing baffle 33 and the inner wall of the adsorption chamber 31, working with the separator frame 6 to separate and seal each set of fan-shaped zeolite components 5, ensuring that each set of fan-shaped zeolite components 5 does not interfere with each other and is tightly sealed. The sealing strip 7 seals and limits the areas on both sides of the fan-shaped zeolite component 5, preventing the exhaust gas from entering the adsorption chamber 31 through the conveying pipe 2 and flowing freely inside the adsorption chamber 31. After the exhaust gas enters, it is blocked and sealed by the sealing strip 7, and can only be adsorbed and collected by a single set of fan-shaped zeolite components 5. This allows the single set of fan-shaped zeolite components 5 to fully adsorb VOCs, thereby increasing the amount of VOCs adsorbed per unit volume of zeolite. After adsorption, the position angle of the fan-shaped zeolite component 5 changes due to the rotation of the separator 6, allowing the next set of fan-shaped zeolite components 5 to move to the end of the conveying pipe 2 to continue adsorbing and collecting the exhaust gas discharged from the conveying pipe 2.

[0035] In this embodiment, the separator 6 rotates within the adsorption chamber 31, moving the adsorbed fan-shaped zeolite pieces 5 to the heating zone. At this time, the electric heating plate heats the VOCs adsorbed in the fan-shaped zeolite pieces 5, causing the VOCs to be re-vaporized and collected and transported by the collection pipe 4, thus achieving VOCs treatment. As the separator 6 continues to rotate, the fan-shaped zeolite pieces 5 move out of the heating zone. At this time, the heat of the fan-shaped zeolite pieces 5 gradually decreases, allowing them to cool down. After cooling, the fan-shaped zeolite pieces 5 re-enter the adsorption zone for continued adsorption, ensuring the reuse of the fan-shaped zeolite pieces 5.

[0036] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An energy-saving adsorption device for VOCs treatment, comprising a pretreatment assembly (1), a conveying pipe (2) and a zeolite rotary wheel shell (3), the pretreatment assembly (1) is provided with the zeolite rotary wheel shell (3) on the side, the conveying pipe (2) is installed between the pretreatment assembly (1) and the zeolite rotary wheel shell (3), the pretreatment assembly (1) inhales the external waste gas and preliminarily filters the particulate impurities in the waste gas, and the conveying pipe (2) inputs the filtered waste gas into the zeolite rotary wheel shell (3), characterized in that: The zeolite runner shell (3) is provided with a zeolite runner assembly, which partitions and adsorbs VOCs in the exhaust gas entering the zeolite runner shell (3). ​ 2. The energy-efficient adsorption apparatus for VOCs treatment of claim 1, wherein: The zeolite runner assembly mainly consists of fan-shaped zeolite pieces (5), a partition frame (6) and a sealing and fitting strip (7). The partition frame (6) is a support part of the zeolite runner assembly, and slowly rotates inside the zeolite runner shell (3). The fan-shaped zeolite pieces (5) are installed equidistantly on the partition frame (6). There are multiple groups of fan-shaped zeolite pieces (5), and each group is isolated from each other. After the fan-shaped zeolite pieces (5) adsorb VOCs, the VOCs cannot flow into other fan-shaped zeolite pieces (5). The sealing and fitting strips (7) are symmetrically and equidistantly installed on the side wall of the partition frame (6), and are fitted with the inner wall of the zeolite runner shell (3). The sealing and fitting strips (7) close the space between each group of fan-shaped zeolite pieces (5).

3. The energy-efficient adsorption apparatus for VOCs treatment of claim 2, wherein: The number of sealing and fitting strips (7) is twice the number of fan-shaped zeolite pieces (5). The sealing and fitting strips (7) are arranged on both sides of the fan-shaped zeolite pieces (5). The sealing and fitting strips (7) close and shield the space between the zeolite runner shell (3) and the fan-shaped zeolite pieces (5).

4. The energy-efficient adsorption apparatus for VOCs treatment of claim 3, wherein: The zeolite runner shell (3) is provided with a heating assembly for heating a single group of fan-shaped zeolite pieces (5). The heating assembly is set up on the zeolite runner assembly to form a heating zone. The fan-shaped zeolite pieces (5) turned out of the heating zone enter the cooling zone to discharge excess heat.

5. The energy-efficient adsorption apparatus for VOCs treatment of claim 1, wherein: The zeolite runner shell (3) includes an adsorption bin (31), an exhaust gas output pipe (32) and a sealing baffle (33). The adsorption bin (31) is arranged on the side of the pretreatment assembly (1). The sealing baffle (33) is installed at the opening of the side of the adsorption bin (31), and forms a sealed space with the adsorption bin (31). The zeolite runner assembly rotates in the adsorption bin (31). The adsorption bin (31) is provided with an exhaust gas output pipe (32) for discharging the remaining exhaust gas.

6. The energy-efficient adsorption apparatus for VOCs treatment of claim 5, wherein: The exhaust gas output pipe (32) is flush with the position of the gas outlet port at the end of the conveying pipe (2). After the conveying pipe (2) inputs the exhaust gas into the adsorption bin (31), the exhaust gas enters the exhaust gas output pipe (32) after being adsorbed and treated by the fan-shaped zeolite pieces (5), and is directly discharged by the exhaust gas output pipe (32).

7. The energy-efficient adsorption apparatus for VOCs treatment of claim 1, wherein: The pretreatment assembly (1) includes a filter bin (11), a connecting end (12) and a filter plate (13). The filter bin (11) is arranged on the side of the zeolite runner shell (3). The filter bin (11) is provided with filter plates (13) for filtering particulate impurities in the exhaust gas. There are multiple groups of filter plates (13), and each group of filter plates (13) is arranged according to the size of the filtered particles. The filter bin (11) is provided with a connecting end (12) at the end. The connecting end (12) introduces the external exhaust gas into the filter bin (11) for filtering treatment by the filter plates (13).

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