BDO vaporizer

Abstract

The utility model discloses a BDO vaporizer which comprises a vaporizing tower, the top end of the vaporizing tower is provided with a gas phase outlet, the side edge of the vaporizing tower is respectively provided with a BDO inlet and a recycle hydrogen inlet, the BDO inlet is close to the top of the vaporizing tower, the recycle hydrogen inlet is close to the bottom of the vaporizing tower, the BDO inlet is connected with a sprayer inside the vaporizing tower, and the bottom end of the vaporizing tower is provided with a liquid return pipe. The liquid return pipe is communicated with the BDO inlet through a pipeline, and a plurality of manholes are formed in the outer surface of the vaporization tower. Through the design of the sprayers, BDO enters the liquid collecting container, then enters the communicating shell through the rotating pipe, then enters the first liquid spraying pipe and the second liquid spraying pipe respectively and is sprayed out through the spraying heads, and due to the fact that the distances between the spraying heads on the first liquid spraying pipe and the second liquid spraying pipe and the communicating shell are different, the BDO is sprayed out through the spraying heads. And when the rotating pipe rotates, the sprayed liquid is more dispersed, the contact rate between the BDO and the high-temperature hydrogen is further increased, and the vaporization effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of BDO vaporizers, in particular to a BDO vaporizer. Background Art

[0002] The NMP synthesis production process includes γ-butyrolactone synthesis, NMP synthesis and methylamine recovery. The raw material for γ-butyrolactone synthesis is: 1,4-butanediol (BDO) is dehydrogenated under the action of a catalyst to obtain a crude product, and then dehydrated and decompressed to obtain the intermediate product γ-butyrolactone.

[0003] In this process flow, BDO needs to be vaporized by a BDO vaporization tower so as to carry out the next synthesis reaction. The principle of the vaporization tower is to use high-temperature hydrogen as a carrier gas to heat BDO to vaporize it. BDO generally enters the tower from the top of the tower, and high-temperature hydrogen enters the tower from the bottom of the tower. BDO needs to be dispersed by a sprayer to improve the atomization effect of BDO. In the prior art, the dispersion of BDO is generally improved by adding multiple nozzles. However, the nozzles that are far away from the BDO liquid inlet may have insufficient hydraulic pressure, resulting in insufficient atomization, thereby reducing the vaporization effect. Utility Model Content

[0004] In order to solve the problems mentioned in the above background technology, the utility model provides a BDO vaporizer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A BDO vaporizer comprises a vaporization tower, wherein a gas phase outlet is arranged at the top of the vaporization tower, a BDO inlet and a circulating hydrogen inlet are arranged at the sides of the vaporization tower, the BDO inlet is close to the top of the vaporization tower, the circulating hydrogen inlet is close to the bottom of the vaporization tower, the BDO inlet is connected to a sprayer inside the vaporization tower, and a liquid reflux pipe is arranged at the bottom of the vaporization tower.

[0007] Preferably, the liquid reflux pipe is connected to the BDO inlet through a pipeline, and a plurality of manholes are provided on the outer surface of the vaporization tower.

[0008] Preferably, the vaporization tower is provided with a first packing area and a second packing area above and below the BDO inlet, respectively, and a liquid level gauge is installed on the outer wall of the vaporization tower near the liquid collecting area at the bottom of the tower.

[0009] Preferably, the sprayer includes a liquid collecting container, a rotating tube is installed at the bottom end of the liquid collecting container, a connecting shell is fixed to the bottom end of the rotating tube, both ends of the connecting shell are fixedly connected with a first spray pipe and a second spray pipe, nozzles are installed at the bottom ends of the first spray pipe and the second spray pipe, and the distances between the nozzles on the first spray pipe and the second spray pipe and the connecting shell are different.

[0010] Preferably, a vertical rotating shaft is installed inside the liquid collecting container, a plurality of blades are installed outside the vertical rotating shaft, the bottom end of the vertical rotating shaft extends to the outside of the liquid collecting container and is fixed with a first gear, a second gear is fixed outside the rotating tube, and the first gear is meshed with the second gear.

[0011] Preferably, an arc-shaped sealing plate is fixed inside the connecting shell, the arc-shaped sealing plate is in sliding contact with the inside of the connecting shell, and the arc-shaped sealing plate is fixed by a fixing rod, and one end of the fixing rod away from the arc-shaped sealing plate passes through the rotating tube and extends to the inside of the liquid collecting container, and is fixed to the inner wall of the liquid collecting container.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Through the design of the sprayer, after BDO enters the liquid collecting container, it first enters the communicating shell through the rotating tube, and then enters the first spray tube and the second spray tube respectively, and is sprayed out through the spray head. Since the distances between the spray heads on the first spray tube and the second spray tube and the communicating shell are different, the spraying liquid is more dispersed when the rotating tube rotates, which further improves the contact rate between BDO and high-temperature hydrogen and improves the vaporization effect.

[0014] 2. The connecting shell is driven to rotate during the rotation of the rotating tube. Since the arc-shaped blocking plate is fixed to the inner wall of the liquid collecting container through the fixing rod, the arc-shaped blocking plate will alternately block the first liquid spraying pipe and the second liquid spraying pipe during the rotation of the connecting shell, so as to ensure that the first liquid spraying pipe and the second liquid spraying pipe spray liquid alternately, thereby ensuring that the liquid is sprayed from only one of the liquid spraying pipes at the same time, thereby ensuring that the BDO liquid has a greater water pressure when it reaches the nozzle position, and can ensure that the BDO liquid sprayed from the nozzle has a better atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 It is an enlarged schematic diagram of the sprinkler of the utility model;

[0018] Figure 3 It is a top view of the vertical rotating shaft of the utility model;

[0019] In the figure: 1 vaporization tower, 101 circulating hydrogen inlet, 102 BDO inlet, 103 gas phase outlet, 104 liquid reflux pipe, 105 first filling area, 106 second filling area, 107 liquid level device, 108 manhole, 2 sprinkler, 201 liquid collecting container, 202 vertical rotating shaft, 203 blades, 204 first gear, 205 rotating pipe, 206 second gear, 207 connecting shell, 208 first liquid spraying pipe, 209 second liquid spraying pipe, 210 nozzle, 211 fixing rod, 212 arc-shaped blocking plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0021] Example

[0022] Reference Figure 1-3 A BDO vaporizer comprises a vaporization tower 1, a gas phase outlet 103 is provided at the top of the vaporization tower 1, a BDO inlet 102 and a circulating hydrogen inlet 101 are respectively provided on the sides of the vaporization tower 1, the BDO inlet 102 is close to the top of the vaporization tower 1, the circulating hydrogen inlet 101 is close to the bottom of the vaporization tower 1, the BDO inlet 102 is connected to a sprayer 2 inside the vaporization tower 1, a liquid reflux pipe 104 is provided at the bottom of the vaporization tower 1, the preheated BDO enters the vaporization tower 1 from the BDO inlet 102, hydrogen enters the vaporization tower 1 from the circulating hydrogen inlet 101 at the bottom of the tower as a high-temperature carrier gas, the BDO flows from top to bottom after being dispersed by the sprayer 2, and contacts with the high-temperature hydrogen from bottom to top, and flows out from the gas phase outlet 103 after being vaporized, the unvaporized BDO gathers at the bottom of the vaporization tower 1, and is pumped back to the BDO inlet 102 through the liquid reflux pipe 104 for circulating vaporization.

[0023] Wherein, the liquid reflux pipe 104 is connected to the BDO inlet 102 through a pipeline, and a plurality of manholes 108 are provided on the outer surface of the vaporization tower 1;

[0024] The existence of the manhole 108 enables the staff to conveniently inspect and maintain the inside of the vaporizer. Due to the complex process of chemical production, the equipment may fail or be damaged due to various reasons. At this time, it is necessary to enter the equipment through the manhole 108 to inspect and repair the faulty parts.

[0025] The interior of the vaporization tower 1 is provided with a first packing area 105 and a second packing area 106 above and below the BDO inlet 102, respectively, and a liquid level meter 107 is installed on the outer wall of the vaporization tower 1 near the liquid collecting area at the bottom of the tower;

[0026] The filler can effectively increase the contact area between the gas and liquid phases, making the heat between the gas and liquid more fully and efficiently transferred, thereby promoting the vaporization of BDO;

[0027] The BDO liquid level inside the vaporizer 1 can be observed at any time through the liquid level sensor 107, so that the BDO can be transferred to the BDO inlet 102 for recycling in time.

[0028] The sprayer 2 includes a liquid collecting container 201, a rotating tube 205 is installed at the bottom end of the liquid collecting container 201, a connecting shell 207 is fixed at the bottom end of the rotating tube 205, both ends of the connecting shell 207 are fixedly connected with a first liquid spraying pipe 208 and a second liquid spraying pipe 209, and a spray head 210 is installed at the bottom end of the first liquid spraying pipe 208 and the second liquid spraying pipe 209, and the distance between the spray head 210 and the connecting shell 207 on the first liquid spraying pipe 208 and the second liquid spraying pipe 209 is different;

[0029] After BDO enters the liquid collecting container 201, it first enters the communicating shell 207 through the rotating tube 205, and then enters the first liquid spraying pipe 208 and the second liquid spraying pipe 209 respectively, and is sprayed out through the nozzle 210. Since the distances between the nozzles 210 on the first liquid spraying pipe 208 and the second liquid spraying pipe 209 and the communicating shell 207 are different, when the rotating tube 205 rotates, the spraying liquid is more dispersed, which further improves the contact rate between BDO and the high-temperature hydrogen and improves the vaporization effect.

[0030] A vertical shaft 202 is installed inside the liquid collecting container 201, and a plurality of blades 203 are installed outside the vertical shaft 202. The bottom end of the vertical shaft 202 extends to the outside of the liquid collecting container 201 and is fixed with a first gear 204. A second gear 206 is fixed outside the rotating tube 205, and the first gear 204 meshes with the second gear 206.

[0031] The BDO liquid entering the liquid collecting container 201 will impact the blades 203, thereby driving the vertical rotating shaft 202 to rotate, and then the rotating tube 205 can be driven to rotate through the meshing of the first gear 204 and the second gear 206.

[0032] An arc-shaped blocking plate 212 is fixed inside the communicating shell 207, and the arc-shaped blocking plate 212 is in sliding contact with the inside of the communicating shell 207, and the arc-shaped blocking plate 212 is fixed by a fixing rod 211, and one end of the fixing rod 211 away from the arc-shaped blocking plate 212 passes through the rotating tube 205 and extends to the inside of the liquid collecting container 201, and is fixed to the inner wall of the liquid collecting container 201;

[0033] The connecting shell 207 is driven to rotate during the rotation of the rotating tube 205. Since the arc-shaped blocking plate 212 is fixed to the inner wall of the liquid collecting container 201 through the fixing rod 211, the arc-shaped blocking plate 212 will alternately block the first liquid spraying pipe 208 and the second liquid spraying pipe 209 during the rotation of the connecting shell 207, so as to ensure that the first liquid spraying pipe 208 and the second liquid spraying pipe 209 spray liquid alternately, thereby ensuring that liquid is sprayed from only one of the liquid spraying pipes at the same time, thereby ensuring that the BDO liquid has a greater water pressure when it reaches the position of the nozzle 210, and can ensure that the BDO liquid sprayed from the nozzle 210 has a better atomization effect.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A BDO vaporizer, comprising a vaporization tower (1), characterized in that: The top of the vaporizer (1) is provided with a gas phase outlet (103), and the sides of the vaporizer (1) are respectively provided with a BDO inlet (102) and a circulating hydrogen inlet (101), wherein the BDO inlet (102) is close to the top of the vaporizer (1), and the circulating hydrogen inlet (101) is close to the bottom of the vaporizer (1), and the BDO inlet (102) is connected to a sprayer (2) inside the vaporizer (1), and a liquid reflux pipe (104) is provided at the bottom of the vaporizer (1).

2. A BDO vaporizer according to claim 1, characterized in that: The liquid reflux pipe (104) is connected to the BDO inlet (102) through a pipeline, and a plurality of manholes (108) are provided on the outer surface of the vaporization tower (1).

3. A BDO vaporizer according to claim 1, characterized in that: The interior of the vaporization tower (1) is provided with a first packing area (105) and a second packing area (106) respectively above and below the BDO inlet (102), and a liquid level meter (107) is installed on the outer wall of the vaporization tower (1) near the liquid collecting area at the bottom of the tower.

4. A BDO vaporizer according to claim 1, characterized in that: The sprayer (2) comprises a liquid collecting container (201), a rotating tube (205) is installed at the bottom end of the liquid collecting container (201), a connecting shell (207) is fixed at the bottom end of the rotating tube (205), a first liquid spraying pipe (208) and a second liquid spraying pipe (209) are fixedly connected at both ends of the connecting shell (207), a spray head (210) is installed at the bottom end of the first liquid spraying pipe (208) and the second liquid spraying pipe (209), and the distances between the spray heads (210) on the first liquid spraying pipe (208) and the second liquid spraying pipe (209) and the connecting shell (207) are different.

5. A BDO vaporizer according to claim 4, characterized in that: A vertical rotating shaft (202) is installed inside the liquid collecting container (201), a plurality of blades (203) are installed outside the vertical rotating shaft (202), a bottom end of the vertical rotating shaft (202) extends to the outside of the liquid collecting container (201) and is fixed with a first gear (204), a second gear (206) is fixed outside the rotating tube (205), and the first gear (204) is meshed with the second gear (206).

6. A BDO vaporizer according to claim 5, characterized in that: An arc-shaped sealing plate (212) is fixed inside the connecting shell (207), and the arc-shaped sealing plate (212) is in sliding contact with the inside of the connecting shell (207). The arc-shaped sealing plate (212) is fixed by a fixing rod (211). One end of the fixing rod (211) away from the arc-shaped sealing plate (212) passes through the rotating tube (205) and extends to the inside of the liquid collecting container (201), and is fixed to the inner wall of the liquid collecting container (201).

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