Device for recycling hydrogen in ethylene glycol liquid phase hydrogenation tail gas

Abstract

The utility model relates to the field of chemical engineering, and discloses a device for recycling hydrogen in ethylene glycol liquid phase hydrogenation tail gas, which comprises a bottom support, a hydrogen recycling device is fixedly arranged at the top of the bottom support, and an ethylene glycol liquid phase hydrogenation reaction device is fixedly arranged at the top of the bottom support corresponding to the side edge of the hydrogen recycling device. A hydrogen conveying pipe is fixedly connected between the hydrogen recycling device and the ethylene glycol liquid phase hydrogenation reaction device, two sets of transverse strips are connected to the top of the bottom support in a sliding mode, and two sets of protection arc plates are close to each other to surround the outer wall of the hydrogen conveying pipe. Due to the flammable characteristic of hydrogen and high temperature possibly generated in the conveying process, the anti-scalding assembly can prevent the situation that the surface temperature of the hydrogen conveying pipe is too high, so that surrounding substances are burnt or operators are scalded, the operation safety is improved, heat loss in the conveying process can be reduced through proper heat insulation measures, and the utilization efficiency of energy is improved.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to a device for recovering and utilizing hydrogen in tail gas of ethylene glycol liquid phase hydrogenation. Background Art

[0002] In the production process of ethylene glycol, liquid phase hydrogenation is a key step, which improves product quality through catalytic hydrogenation reaction. In order to effectively utilize hydrogen, a special recovery device has been developed to extract hydrogen from the tail gas for reuse. This not only improves resource utilization, but also helps to reduce costs and protect the environment. The hydrogen has a certain temperature. The hydrogen passes through the delivery pipe to the hydrogen recovery and utilization device. Since the high temperature in the hydrogen passes through the inner wall of the delivery pipe, the temperature is transferred from the inner wall of the delivery pipe to the outer wall, which makes it easy for workers to get burned if they accidentally touch the delivery pipe. There are certain safety hazards. For this reason, we propose a hydrogen recovery and utilization device in the tail gas of ethylene glycol liquid phase hydrogenation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a device for recovering and utilizing hydrogen from tail gas of ethylene glycol liquid phase hydrogenation, which solves the above-mentioned problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogen recovery and utilization device in ethylene glycol liquid phase hydrogenation tail gas, comprising a bottom support, a hydrogen recovery and utilization device is fixedly arranged on the top of the bottom support, an ethylene glycol liquid phase hydrogenation reaction device is fixedly installed on the side of the top of the bottom support corresponding to the hydrogen recovery and utilization device, a hydrogen delivery pipe is fixedly connected between the hydrogen recovery and utilization device and the ethylene glycol liquid phase hydrogenation reaction device, two groups of grooves are opened on the top of the bottom support corresponding to the top of the hydrogen delivery pipe, and two groups of horizontal bars are slidably connected to the top of the bottom support, and also includes:

[0007] The anti-scalding component is installed on the outer wall of the hydrogen delivery pipe to prevent workers from accidentally touching the outer wall of the hydrogen delivery pipe and causing burns.

[0008] The transverse shifting assembly is installed at the bottom of the two sets of transverse bars and is used to adjust the position of the anti-scalding assembly.

[0009] Preferably, a pair of sliding square plates are slidably connected in both groups of grooves, a vertical connecting block is fixed on the top of the sliding square plate, and the connecting block and the sliding square plate are slidably connected in the grooves.

[0010] Preferably, both ends of the two groups of horizontal bars are fixedly connected with downwardly extending and integrated support plates, and the bottoms of the two groups of support plates are respectively fixedly connected to the tops of the two groups of connection blocks.

[0011] Preferably, the anti-scalding component includes a connecting shaft, a protective arc plate, a slot and a slot, and two groups of connecting shafts are fixedly connected to one side corresponding to each other of the two groups of horizontal bars, and a protective arc plate is fixedly connected between the ends of the two groups of connecting shafts, wherein both groups of side walls of one group of protective arc plates are fixedly connected to a slot, and both groups of side walls of the other group of protective arc plates are provided with two groups of slots.

[0012] Preferably, the two groups of card slots are respectively slidably inserted in the two groups of card plates.

[0013] Preferably, the transverse movement assembly includes a support frame, a bidirectional threaded screw and an adjustment handle. A support frame is fixed between the corresponding middle parts of the two groups of support plates. A bidirectional threaded screw is threadedly connected between the two groups of support frames. Both ends of the bidirectional threaded screw extend out of the two groups of support frames respectively and an adjustment handle is fixed to one of the ends.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a hydrogen recovery and utilization device in ethylene glycol liquid phase hydrogenation tail gas, which has the following beneficial effects:

[0016] 1. The hydrogen recovery and utilization device in the tail gas of ethylene glycol liquid phase hydrogenation has two sets of protective arc plates close to each other to surround the outer wall of the hydrogen delivery pipe. Due to the flammable characteristics of hydrogen itself and the high temperature that may be generated during transportation, the use of anti-scalding components can prevent the surface temperature of the hydrogen delivery pipe from being too high to cause combustion of surrounding materials or scald operators, thereby increasing the safety of operation, and appropriate insulation measures can reduce heat loss during transportation and improve energy utilization efficiency.

[0017] 2. The hydrogen recovery and utilization device in the tail gas of ethylene glycol liquid phase hydrogenation enables the two groups to be close to each other by setting a bidirectional threaded screw, which saves the time of installing the anti-scalding component to a great extent and improves the working efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the horizontal bar and the support plate of the utility model;

[0020] Figure 3 This is a schematic diagram of the protective arc plate of the utility model.

[0021] In the figure: 1. bottom support; 2. hydrogen recovery and utilization device; 3. ethylene glycol liquid phase hydrogenation reaction device; 4. hydrogen delivery pipe; 5. groove; 6. horizontal bar; 7. support plate; 8. support frame; 9. connection block; 10. sliding square plate; 11. connecting shaft; 12. protective arc plate; 13. slot; 14. clamping plate; 15. bidirectional threaded screw; 16. adjustment handle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 A hydrogen recovery and utilization device in tail gas of ethylene glycol liquid phase hydrogenation comprises a bottom support 1, a hydrogen recovery and utilization device 2 is fixedly arranged on the top of the bottom support 1, an ethylene glycol liquid phase hydrogenation reaction device 3 is fixedly installed on the side of the top of the bottom support 1 corresponding to the hydrogen recovery and utilization device 2, a hydrogen delivery pipe 4 is fixedly connected between the hydrogen recovery and utilization device 2 and the ethylene glycol liquid phase hydrogenation reaction device 3, firstly, when the ethylene glycol liquid phase hydrogenation reaction device 3 inputs hydrogen into the hydrogen recovery and utilization device 2 through the hydrogen delivery pipe 4, two groups of grooves 5 are opened on the top of the bottom support 1 corresponding to the top of the hydrogen delivery pipe 4, and two groups of horizontal bars 6 are slidably connected to the top of the bottom support 1, and also comprises:

[0024] The anti-scalding component is installed on the outer wall of the hydrogen delivery pipe 4 to prevent operators from accidentally touching the outer wall of the hydrogen delivery pipe 4 and causing burns.

[0025] The transverse movement component is installed at the bottom of the two groups of transverse bars 6 and is used to adjust the position of the anti-scalding component.

[0026] A pair of sliding square plates 10 are slidably connected in the two groups of grooves 5. A vertical connecting block 9 is fixed on the top of the sliding square plate 10. The connecting block 9 and the sliding square plate 10 are both slidably connected in the groove 5. The two groups of connecting blocks 9 drive the two groups of sliding square plates 10 to slide inside through the two groups of support plates 7 respectively.

[0027] Both ends of the two groups of horizontal bars 6 are fixedly connected with downwardly extending and integrated support plates 7, and the bottoms of the two groups of support plates 7 are respectively fixedly connected to the tops of the two groups of connecting blocks 9. The two groups of support frames 8 drive the support plates 7 at both ends of the support frames 8 to approach each other through the threads on the bidirectional threaded screw 15.

[0028] The anti-scalding component includes a connecting shaft 11, a protective arc plate 12, a slot 13 and a clip 14. Two groups of connecting shafts 11 are fixedly connected to the corresponding sides of the two groups of horizontal bars 6. The ends of the two groups of connecting shafts 11 are fixedly connected with protective arc plates 12. The two groups of side walls of one group of protective arc plates 12 are fixedly connected with clips 14, and the two groups of side walls of the other group of protective arc plates 12 are provided with two groups of slots 13. When the two groups of support plates 7 are moved by the horizontal bar 6, they drive the two groups of connecting shafts 11 to move synchronously, and the two groups of protective arc plates 12 become close to each other.

[0029] The two groups of card slots 13 are respectively slidably inserted into the two groups of card plates 14. When the two groups of card plates 14 on one group of protective arc plates 12 are inserted into the two groups of card slots 13 on the other group of protective arc plates 12, the protection is installed.

[0030] The transverse movement assembly includes a support frame 8, a bidirectional threaded screw 15 and an adjustment handle 16. A support frame 8 is fixedly arranged between the corresponding middle parts of the two groups of support plates 7. A bidirectional threaded screw 15 is threadedly connected between the two groups of support frames 8. Both ends of the bidirectional threaded screw 15 extend out of the two groups of support frames 8 respectively and one group of ends is fixedly connected with an adjustment handle 16. When it is necessary to add protection to the hydrogen delivery pipe 4, the adjustment handle 16 is rotated so that the adjustment handle 16 drives the bidirectional threaded screw 15 to rotate on the two groups of support frames 8.

[0031] Working principle: First, when the ethylene glycol liquid phase hydrogenation reaction device 3 inputs hydrogen into the hydrogen recovery and utilization device 2 through the hydrogen delivery pipe 4, when it is necessary to install protection for the hydrogen delivery pipe 4, the adjusting handle 16 is rotated to make the adjusting handle 16 drive the bidirectional threaded screw 15 to rotate on the two groups of support frames 8, and the two groups of support frames 8 drive the support plates 7 at both ends of the support frames 8 to approach each other through the threads on the bidirectional threaded screw 15, and the two groups of connecting blocks 9 drive the two groups of sliding square plates 10 to slide inside through the two groups of support plates 7 respectively, and the two groups of support plates 7 drive the two groups of connecting shafts 11 to move synchronously when the two groups of support plates 7 move through the horizontal bar 6, and the two groups of protective arc plates 12 become close to each other, and when the two groups of card plates 14 on one group of protective arc plates 12 are inserted into the two groups of card slots 13 on the other group of protective arc plates 12, the protection is installed.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering hydrogen from tail gas from liquid-phase hydrogenation of ethylene glycol, comprising a bottom support (1), a hydrogen recovery device (2) being fixedly mounted on the top of the bottom support (1), an ethylene glycol liquid-phase hydrogenation reaction device (3) being fixedly mounted on the top of the bottom support (1) corresponding to the side of the hydrogen recovery device (2), a hydrogen delivery pipe (4) being fixedly connected between the hydrogen recovery device (2) and the ethylene glycol liquid-phase hydrogenation reaction device (3), characterized in that: The top of the bottom support (1) is provided with two groups of grooves (5) corresponding to the top of the hydrogen delivery pipe (4), and the top of the bottom support (1) is slidably connected with two groups of horizontal bars (6), and further comprises: The anti-scalding component is installed on the outer wall of the hydrogen delivery pipe (4) to prevent operators from accidentally touching the outer wall of the hydrogen delivery pipe (4) and causing burns. A transverse movement component is installed at the bottom of the two sets of transverse bars (6) and is used to adjust the position of the anti-scalding component.

2. The hydrogen recovery and utilization device in the tail gas of ethylene glycol liquid phase hydrogenation according to claim 1, characterized in that: A pair of sliding square plates (10) are slidably connected in the two groups of grooves (5), a vertical connecting block (9) is fixedly provided on the top of the sliding square plate (10), and the connecting block (9) and the sliding square plate (10) are both slidably connected in the grooves (5).

3. The hydrogen recovery and utilization device in the tail gas of ethylene glycol liquid phase hydrogenation according to claim 2, characterized in that: Both ends of the two groups of horizontal bars (6) are fixedly connected with downwardly extending and integrated support plates (7), and the bottoms of the two groups of support plates (7) are respectively fixedly connected to the tops of the two groups of connection blocks (9).

4. The device for recovering hydrogen from tail gas from ethylene glycol liquid phase hydrogenation according to claim 3, characterized in that: The scald prevention component comprises a connecting shaft (11), a protective arc plate (12), a clamping groove (13) and a clamping plate (14); two sets of connecting shafts (11) are fixedly connected to one side of the two sets of horizontal bars (6) corresponding to each other; a protective arc plate (12) is fixedly connected between the ends of the two sets of connecting shafts (11); two sets of side walls of one set of protective arc plates (12) are fixedly connected to the clamping plate (14); and two sets of side walls of the other set of protective arc plates (12) are provided with two sets of clamping grooves (13).

5. The device for recovering hydrogen from tail gas from ethylene glycol liquid phase hydrogenation according to claim 4, characterized in that: The two groups of card slots (13) are respectively slidably inserted into the two groups of card plates (14).

6. The device for recovering hydrogen from tail gas from ethylene glycol liquid phase hydrogenation according to claim 3, characterized in that: The transverse movement assembly comprises a support frame (8), a bidirectional threaded screw (15) and an adjustment handle (16); a support frame (8) is fixedly arranged between the corresponding middle parts of the two groups of support plates (7); a bidirectional threaded screw (15) is threadedly connected between the two groups of support frames (8); two ends of the bidirectional threaded screw (15) respectively extend outside the two groups of support frames (8) and one end of one group is fixedly connected to the adjustment handle (16).

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