Normal hexane tail gas recovery device

Abstract

The utility model provides an n-hexane tail gas recovery device, and belongs to the technical field of tail gas recovery. The normal hexane tail gas recovery device comprises a recovery assembly. The recycling assembly comprises a recycling cover, a connecting plate, a limiting cylinder, a hasp and a resin adsorption layer, during use, the hasp is opened, then the resin adsorption layer can be directly poured out from the interior of the limiting cylinder, a new resin adsorption layer can be directly added into the interior of the limiting cylinder, then the limiting cylinder can be inserted into the recycling cover again, and the resin adsorption layer can be recycled. On one hand, the tail gas dispersedly enters the limiting cylinder through a plurality of gas inlets and a plurality of through holes, so that the dispersion degree of the tail gas in the limiting cylinder is relatively high, and the adsorption and recovery efficiency of the n-hexane can be improved, and on the other hand, the adsorption and recovery efficiency of the n-hexane can be improved. And the resin adsorption layer can be directly poured out of or added into the limiting cylinder, so that the replacement of the resin adsorption layer is more time-saving and convenient.

Description

Technical Field

[0001] The present application relates to the field of tail gas recovery, and in particular to a n-hexane tail gas recovery device. Background Art

[0002] Di-tert-butyl dicarbonate is a new type of amino protecting agent used to introduce tert-butyloxycarbonyl protecting agents in organic synthesis. It is particularly suitable for amino protection of amino acids. During the preparation of di-tert-butyl dicarbonate, n-hexane tail gas is produced. N-hexane has multiple functions and can be used as a solvent, chromatographic analysis reference material, paint thinner and polymerization reaction medium. It has a high recycling value. Traditional n-hexane gas recovery methods are mostly through adsorption recovery through activated carbon. With the development of material technology, resin adsorption technology has become more and more mature, and resin adsorption technology has gradually been applied to the recovery of n-hexane gas.

[0003] However, in the related device for recovering n-hexane tail gas by resin adsorption, the recovery box structure used for adsorption recovery is relatively simple. On the one hand, the dispersion of n-hexane tail gas inside the recovery box is small, and the contact area between n-hexane tail gas and the resin adsorption layer is small, which will lead to low recovery efficiency. On the other hand, it is inconvenient to replace the resin adsorption layer. The door of the recovery box is directly set to be completely open, which makes it time-consuming and inconvenient to add and remove the resin adsorption layer inside the recovery box. Utility Model Content

[0004] In order to make up for the above deficiencies, the present application provides a n-hexane tail gas recovery device, which aims to improve the problems of low recovery efficiency and inconvenient replacement of the resin adsorption layer.

[0005] An embodiment of the present application provides a n-hexane tail gas recovery device, including a recovery component.

[0006] The recovery component includes a recovery cover, a connecting plate, a limiting cylinder, a buckle and a resin adsorption layer. The top wall and side wall inside the recovery cover are provided with air inlets, and a plurality of air inlets are provided. The air inlets are evenly distributed in a circle. The connecting plate is tightly pressed against the bottom end of the recovery cover, the top end of the buckle is connected to the recovery cover, and the bottom end of the buckle is connected to the connecting plate. The limiting cylinder is connected to the upper surface of the connecting plate, and the limiting cylinder is slidably inserted into the interior of the recovery cover. The cylinder wall of the limiting cylinder is provided with a through hole, and a plurality of through holes are provided. The through holes are respectively connected to the plurality of air inlets on the side wall of the recovery cover in a one-to-one manner, and the resin adsorption layer is placed inside the limiting cylinder.

[0007] In a specific embodiment, the recovery component further includes an L-shaped support frame, a connection block is provided on one side of the L-shaped support frame, and the recovery cover is fixedly connected to the connection block.

[0008] In a specific embodiment, the bottom wall of the L-shaped support frame is provided with connecting holes, and there are four connecting holes, which are respectively located at the four corners of the bottom wall of the L-shaped support frame.

[0009] In a specific embodiment, a cavity is provided inside the wall of the recovery hood, and the plurality of air inlets are all connected to the cavity.

[0010] In a specific embodiment, an air inlet pipe is fixedly passed through the top wall of the cavity, and the bottom end of the air inlet pipe is communicated with the cavity.

[0011] In a specific embodiment, an elastic sealing gasket is provided on the upper surface of the connecting plate, the elastic sealing gasket is tightly pressed against the bottom end of the recovery cover, and the elastic sealing gasket is fixedly sleeved on the outside of the limiting cylinder.

[0012] In a specific embodiment, a handle is provided on the lower surface of the connecting plate, and two handles are provided, and the two handles are symmetrically arranged.

[0013] In a specific embodiment, a telescopic hose is fixedly passed through the center of the connecting plate, and the top end of the telescopic hose is communicated with the interior of the limiting cylinder.

[0014] In a specific embodiment, two buckles are provided, the top ends of the two buckles are fixedly connected to the outer wall of the recovery cover, and the bottom ends of the two buckles are fixedly connected to the connecting plate.

[0015] In a specific embodiment, the two buckles are symmetrically arranged on both sides of the recovery cover, and the two buckles are symmetrically arranged on both sides of the connecting plate.

[0016] The beneficial effects of the present invention are as follows: the n-hexane tail gas recovery device obtained by the present invention through the above design, when in use, the tail gas enters the interior of the limiting cylinder through a plurality of air inlets and a plurality of through holes, thereby making the tail gas contact with the resin adsorption layer, and then the resin adsorption layer can adsorb and recover the n-hexane gas; when the resin adsorption layer needs to be replaced, the buckle is opened, and then the connecting plate can be pulled down, and then the limiting cylinder can be pulled out of the interior of the recovery cover, and then the limiting cylinder can be turned upside down, and then the resin adsorption layer can be directly poured out from the interior of the limiting cylinder, and then Finally, the limiting cylinder is erected, and a new resin adsorption layer can be directly added to the inside of the limiting cylinder. Then the limiting cylinder can be reinserted into the inside of the recovery cover, and the connecting plate is re-fixed with the buckle, thereby completing the replacement of the resin adsorption layer. On the one hand, the exhaust gas enters the inside of the limiting cylinder through several air inlets and several through holes in a dispersed manner, so that the exhaust gas in the limiting cylinder has a higher dispersion degree, thereby improving the efficiency of n-hexane adsorption recovery. On the other hand, the resin adsorption layer can be directly poured out or added to the inside of the limiting cylinder, making the replacement of the resin adsorption layer more time-saving and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram from a first perspective of a n-hexane tail gas recovery device provided in an embodiment of the present application;

[0019] Figure 2 A schematic structural diagram of a n-hexane tail gas recovery device from a second perspective provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the cross-sectional structure of a recovery cover provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the cross-sectional structure of the limiting cylinder provided in an embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the partial cross-sectional structure of the recovery cover and the limiting cylinder provided in the embodiment of the present application.

[0023] In the figure: 100-recovery component; 110-L-shaped support frame; 111-connecting block; 112-connecting hole; 120-recovery cover; 121-air inlet; 122-cavity; 123-inlet pipe; 140-connecting plate; 141-elastic sealing gasket; 142-handle; 143-telescopic hose; 150-limiting cylinder; 151-through hole; 160-buckle; 170-resin adsorption layer. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] See also Figure 1 The present application provides a n-hexane tail gas recovery device, including a recovery component 100.

[0027] See also Figure 1-5 The recovery component 100 includes a recovery cover 120, a connecting plate 140, a limiting cylinder 150, a buckle 160 and a resin adsorption layer 170. The top wall and side wall inside the recovery cover 120 are provided with an air inlet 121. There are several air inlets 121, and the air inlets 121 are evenly distributed in a circle. A cavity 122 is provided inside the cover wall of the recovery cover 120, and the several air inlets 121 are connected to the cavity 122. An air inlet pipe 123 is fixedly passed through the top wall of the cavity 122. The bottom end of the air inlet pipe 123 is connected to the cavity 122, and the several air inlets 121 are connected to the air inlet pipe 123 through the cavity 122.

[0028] In this embodiment, the connecting plate 140 is tightly pressed against the bottom end of the recovery cover 120, and an elastic sealing gasket 141 is provided on the upper surface of the connecting plate 140. The elastic sealing gasket 141 is tightly pressed against the bottom end of the recovery cover 120, and the elastic sealing gasket 141 is fixedly sleeved on the outside of the limiting cylinder 150. The elastic sealing gasket 141 can be an elastic rubber gasket. A handle 142 is provided on the lower surface of the connecting plate 140, and two handles 142 are provided, and the two handles 142 are symmetrically arranged.

[0029] In the present application, the top end of the buckle 160 is connected to the recovery cover 120, and the bottom end of the buckle 160 is connected to the connecting plate 140. Two buckles 160 are provided, and the top ends of the two buckles 160 are fixedly connected to the outer wall of the recovery cover 120, and the bottom ends of the two buckles 160 are fixedly connected to the connecting plate 140. The two buckles 160 are symmetrically arranged on both sides of the recovery cover 120, and the two buckles 160 are symmetrically arranged on both sides of the connecting plate 140.

[0030] In this embodiment, the limiting cylinder 150 is connected to the upper surface of the connecting plate 140, and a telescopic hose 143 is fixedly passed through the center of the connecting plate 140. The top end of the telescopic hose 143 is connected to the interior of the limiting cylinder 150, and the telescopic hose 143 can be connected to the pipeline for conveying gas from the outside. The limiting cylinder 150 is slidably inserted into the interior of the recovery cover 120, and a through hole 151 is provided on the cylinder wall of the limiting cylinder 150. There are several through holes 151, and the several through holes 151 are respectively connected to the several air inlets 121 on the side wall of the recovery cover 120. The resin adsorption layer 170 is placed inside the limiting cylinder 150.

[0031] In the specific setting, the recovery component 100 also includes an L-shaped support frame 110, a connecting block 111 is provided on one side of the L-shaped support frame 110, the recovery cover 120 is fixedly connected to the connecting block 111, and a connecting hole 112 is provided on the bottom wall of the L-shaped support frame 110. There are four connecting holes 112, and the four connecting holes 112 are respectively located at the four corners of the bottom wall of the L-shaped support frame 110.

[0032] Specifically, the working principle of the n-hexane tail gas recovery device is as follows: when in use, the tail gas can enter the interior of the cavity 122 through the air inlet pipe 123, and the tail gas inside the cavity 122 enters the interior of the limiting cylinder 150 through a plurality of air inlets 121 and a plurality of through holes 151, so that the tail gas contacts the resin adsorption layer 170, and the resin adsorption layer 170 can adsorb and recover the n-hexane gas, and the remaining gas enters the external gas delivery pipeline through the telescopic hose 143. When the resin adsorption layer 170 needs to be replaced, the two buckles 160 are opened, and then the connecting plate 140 can be pulled down, and the limiting cylinder 150 can be pulled out of the interior of the recovery cover 120, and then the limiting cylinder 150 can be turned upside down, and the resin adsorption layer 170 can be replaced. 70 is directly poured out from the inside of the limiting cylinder 150, and then the limiting cylinder 150 is uprighted, and then a new resin adsorption layer 170 can be directly added to the inside of the limiting cylinder 150, and then the limiting cylinder 150 can be reinserted into the inside of the recovery cover 120, and the two buckles 160 re-fix the connecting plate 140, thereby completing the replacement of the resin adsorption layer 170. On the one hand, the exhaust gas enters the inside of the limiting cylinder 150 through a plurality of air inlets 121 and a plurality of through holes 151 in a dispersed manner, so that the exhaust gas in the inside of the limiting cylinder 150 has a higher dispersion degree, thereby improving the efficiency of n-hexane adsorption recovery. On the other hand, the resin adsorption layer 170 can be directly poured out or added to the inside of the limiting cylinder 150, so that the replacement of the resin adsorption layer 170 is more time-saving and convenient.

[0033] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0034] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A n-hexane tail gas recovery device, characterized in that, include A recycling component (100) includes a recycling cover (120), a connecting plate (140), a limiting cylinder (150), a buckle (160) and a resin adsorption layer (170). The top wall and side wall of the recycling cover (120) are both provided with air inlets (121). The air inlets (121) are provided with a plurality of air inlets (121). The plurality of air inlets (121) are evenly distributed in a circular pattern. The connecting plate (140) is tightly pressed against the bottom end of the recycling cover (120). The top end of the buckle (160) is connected to the recycling cover (120). The bottom end of the buckle (160) is connected to the connecting plate (140), the limiting cylinder (150) is connected to the upper surface of the connecting plate (140), the limiting cylinder (150) is slidably inserted into the interior of the recovery cover (120), the cylinder wall of the limiting cylinder (150) is provided with a through hole (151), and the through holes (151) are provided with a plurality of them, and the plurality of through holes (151) are respectively connected to the plurality of air inlets (121) on the side wall of the recovery cover (120), and the resin adsorption layer (170) is placed inside the limiting cylinder (150).

2. A n-hexane tail gas recovery device according to claim 1, characterized in that, The recovery assembly (100) further comprises an L-shaped support frame (110), a connection block (111) being provided on one side of the L-shaped support frame (110), and the recovery cover (120) being fixedly connected to the connection block (111).

3. A n-hexane tail gas recovery device according to claim 2, characterized in that, The bottom wall of the L-shaped support frame (110) is provided with a connection hole (112), and four connection holes (112) are provided. The four connection holes (112) are respectively located at the four corners of the bottom wall of the L-shaped support frame (110).

4. The n-hexane tail gas recovery device according to claim 1, characterized in that: A cavity (122) is provided inside the wall of the recovery cover (120), and the plurality of air inlets (121) are all connected to the cavity (122).

5. A n-hexane tail gas recovery device according to claim 4, characterized in that, An air intake pipe (123) is fixedly passed through the top wall of the cavity (122), and the bottom end of the air intake pipe (123) is in communication with the cavity (122).

6. The n-hexane tail gas recovery device according to claim 1, characterized in that: An elastic sealing gasket (141) is provided on the upper surface of the connecting plate (140), the elastic sealing gasket (141) is tightly abutted against the bottom end of the recovery cover (120), and the elastic sealing gasket (141) is fixedly sleeved on the outside of the limiting cylinder (150).

7. The n-hexane tail gas recovery device according to claim 1, characterized in that: A handle (142) is provided on the lower surface of the connecting plate (140), and two handles (142) are provided, and the two handles (142) are symmetrically arranged.

8. The n-hexane tail gas recovery device according to claim 1, characterized in that: A telescopic hose (143) is fixedly passed through the center of the connecting plate (140), and the top end of the telescopic hose (143) is communicated with the interior of the limiting cylinder (150).

9. The n-hexane tail gas recovery device according to claim 1, characterized in that: Two buckles (160) are provided, the top ends of the two buckles (160) are fixedly connected to the outer wall of the recovery cover (120), and the bottom ends of the two buckles (160) are fixedly connected to the connecting plate (140).

10. The n-hexane tail gas recovery device according to claim 9, characterized in that: The two buckles (160) are symmetrically arranged on both sides of the recovery cover (120), and the two buckles (160) are symmetrically arranged on both sides of the connecting plate (140).

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