CN217377308U

CN217377308U - Preheating dehydrogenation equipment

Info

Publication number: CN217377308U
Application number: CN202122932023.4U
Authority: CN
Inventors: 王琛; 刘恋; 范莹; 李文清; 齐晓曼; 田浩毅; 华珉; 赵三珊; 程凡
Original assignee: State Grid Shanghai Electric Power Co Ltd; East China Power Test and Research Institute Co Ltd
Current assignee: State Grid Shanghai Electric Power Co Ltd; East China Power Test and Research Institute Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-09-06
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to a dehydrogenation equipment preheats, include: the device comprises a liquid storage tank, a first power pump, a dehydrogenation reactor, a gas-liquid separation device, a condenser and a buffer tank which are connected in sequence, wherein the first power pump is arranged on a pipeline connecting the liquid storage tank and the dehydrogenation reactor; the equipment also comprises a preheating power supply, the pipeline connecting the liquid storage tank and the dehydrogenation reactor is a hard pipe and comprises a plurality of sections of heating sections, and a net-shaped heating wire is arranged in each heating section, is supported on the inner wall of the pipeline and is connected to the preheating power supply through a lead. Compared with the prior art, the utility model discloses a set up the heating section on the pipeline of connecting liquid storage pot and dehydrogenation reactor, carry out multistage preheating to improve the temperature of the liquid that gets into dehydrogenation reactor, thereby can reduce dehydrogenation reactor's volume.

Description

Preheating dehydrogenation equipment

Technical Field

The utility model relates to a dehydrogenation equipment especially relates to a dehydrogenation equipment preheats.

Background

In the transportation process of hydrogen energy, in order to improve the safety of the transportation process, in some prior art, a solid or liquid compound is obtained by adopting a hydrogen storage material to adsorb hydrogen, so that the harm caused by high-pressure liquid hydrogen is avoided.

The dehydrogenation reaction is generally required at a user side by the way of storing and transporting hydrogen by using a hydrogen storage material, most of the user sides are hydrogen adding stations and the like, the structure of the existing dehydrogenation equipment is shown in fig. 1, a catalyst is required to improve the reaction efficiency in the dehydrogenation reaction process, but a liquid storage tank is generally required to be cooled and cooled in the hydrogen transportation process, so that the volume of a reactor is required to be increased and the reactor is required to be heated in order to be heated to a proper temperature in the dehydrogenation reaction process, and the occupied area of the reactor is undoubtedly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a preheat dehydrogenation equipment, through set up the heating section on the pipeline of connecting liquid storage pot and dehydrogenation reactor, carry out multistage preheating to improve the temperature of the liquid that gets into dehydrogenation reactor, thereby can reduce dehydrogenation reactor's volume.

The purpose of the utility model can be realized through the following technical scheme:

a preheated dehydrogenation apparatus comprising:

the device comprises a liquid storage tank, a first power pump, a dehydrogenation reactor, a gas-liquid separation device, a condenser and a buffer tank which are connected in sequence, wherein the first power pump is arranged on a pipeline connecting the liquid storage tank and the dehydrogenation reactor;

the equipment further comprises a preheating power supply, the pipeline connecting the liquid storage tank and the dehydrogenation reactor is a hard pipe and comprises a plurality of sections of heating sections, wherein the heating sections are internally provided with mesh heating wires, and the mesh heating wires are supported on the inner wall of the pipeline and are connected to the preheating power supply through wires.

The heating sections are distributed behind the first power pump.

And a temperature sensor is arranged behind each section of heating section.

The heating section is a metal tube.

The pipeline for connecting the first power pump and the dehydrogenation reactor comprises a heating section, a non-heating section and a connecting joint, wherein the adjacent heating sections and the non-heating sections are connected through the connecting joint.

The non-heating section is a plastic pipe.

And the outer side of the heating section is wrapped with a heat-insulating layer.

The both ends of connecting node are equipped with the external screw thread, the both ends of heating section and non-heating section be equipped with external screw thread complex internal thread.

The condenser comprises a metal shell, wherein both ends of the metal shell are respectively provided with an air inlet and an air outlet, the inner wall of the metal shell is provided with a plurality of fins, and the bottom of the metal shell is provided with a liquid outlet; the fins are arranged in a staggered mode, the length of each fin is 70% -90% of the length of the inner cavity of the condenser along the direction of the fin, and a second power pump is arranged on a pipeline between the condenser and the buffer tank.

The liquid outlet is connected to the input end of the liquid storage tank.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the heating section is arranged on the pipeline connecting the liquid storage tank and the dehydrogenation reactor, and multi-stage preheating is carried out, so that the temperature of liquid entering the dehydrogenation reactor is improved, and the volume of the dehydrogenation reactor can be reduced.

2. The heating sections are uniformly distributed behind the first power pump, and the environmental temperature can be effectively utilized at the front section of the first power pump.

3. The heating section is a metal tube, so that the heat conductivity can be improved, and the preheating uniformity is improved.

4. Connect through the link, can reduce the size of single section pipeline, be convenient for carry out the regulation of length and festival number according to the place, expanded application scope.

5. Through the length that increases the fin to set up the second power pump and provide power, can improve the condensation effect, when guaranteeing the velocity of flow.

Drawings

FIG. 1 is a schematic diagram of a conventional dehydrogenation plant;

FIG. 2 is a schematic diagram of the preheating part of the dehydrogenation apparatus of the present invention;

FIG. 3 is a schematic structural view of a connecting joint;

FIG. 4 is a schematic cross-sectional view of a heating section;

FIG. 5 is a schematic view of a modified condenser fin;

FIG. 6 is a schematic piping diagram after the condenser;

wherein: 1. the device comprises a liquid storage tank, 2, a first power pump, 3, a dehydrogenation reactor, 4, a gas-liquid separation device, 5, a buffer tank, 6, a condenser, 8, a second power pump, 61, a metal shell, 62, fins, 71, a heating section, 72, a non-heating section, 73, a connecting joint, 711, a metal pipe, 712, a heating wire, 713 and a heat insulation layer.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Aiming at the dehydrogenation equipment shown in figure 1, a preheating part and a condensation strengthening part are added to obtain preheating dehydrogenation equipment, as shown in figure 2, the preheating dehydrogenation equipment comprises a liquid storage tank 1, a first power pump 2, a dehydrogenation reactor 3, a gas-liquid separation device 4, a condenser 6 and a buffer tank 5 which are sequentially connected, wherein the first power pump 2 is arranged on a pipeline connecting the liquid storage tank 1 and the dehydrogenation reactor 3;

the device also comprises a preheating power supply, the pipeline connecting the liquid storage tank 1 and the dehydrogenation reactor 3 is a hard pipe and comprises a plurality of sections of heating sections 71, a mesh heating wire 712 is arranged in the heating sections 71, and the mesh heating wire 712 is supported on the inner wall of the pipeline and is connected to the preheating power supply through a lead.

The heating section 71 is arranged on the pipeline connecting the liquid storage tank 1 and the dehydrogenation reactor 3 to carry out multistage preheating, so that the temperature of the liquid entering the dehydrogenation reactor 3 is improved, and the volume of the dehydrogenation reactor 3 can be reduced.

In this embodiment, the heating sections 71 are distributed behind the first power pump 2, and the ambient temperature can be effectively utilized in the front section of the first power pump 2. In addition, it is considered that a temperature sensor is arranged behind each section of the heating section 71, and a controller is arranged to control conduction between the preheating power supply and each mesh heating wire 712, so as to collect the temperature of the fluid behind each section of the heating section 71, thereby realizing feedback control on the work of each mesh heating wire 712, specifically, the controller comprises a single chip microcomputer and a plurality of relays, contacts of each relay are arranged between the preheating power supply and each mesh heating wire 712, coils are connected to output pins of the single chip microcomputer, when the temperature collected by a certain temperature sensor exceeds a set threshold value, the output pins of the mesh heating wires 712 in the heating section 71 corresponding to the temperature sensor before the controller are switched to a high level, the coils of the corresponding relays are switched on, and normally closed contacts are switched off, thereby switching the power supply of the mesh heating wires 712.

In this embodiment, the heating section 71 is a metal pipe 711, as shown in fig. 2, the pipeline connecting the first power pump 2 and the dehydrogenation reactor 3 includes the heating section 71 and the non-heating section 7271, and the connecting joint 73, and the adjacent heating section 71 and the non-heating section 7271 are connected by the connecting joint 73. As shown in fig. 4, the non-heated segment 7271 is a plastic tube. In this way, the heating segments 71 and the non-heating segments 7271 are connected by the connecting joints 73, so that the number of the heating segments 71 and the non-heating segments 7271 can be adjusted according to actual needs, in addition, the assembly and the transportation are also convenient, and preferably, a metal pipe 711 with good heat conductivity can be adopted in a pipeline before the first power pump 2, so that the ambient temperature is effectively utilized, and in addition, the heat loss can be avoided by the heat insulation layer 713 and the plastic pipe.

As shown in fig. 3, both ends of the connecting joint 73 are provided with external threads, and both ends of the heating section 71 and the non-heating section 7271 are provided with internal threads matched with the external threads, so that the connecting installation and the disassembly are convenient.

As shown in fig. 5, the condenser 6 includes a metal casing 61, two ends of the metal casing 61 are respectively provided with an air inlet and an air outlet, the inner wall of the metal casing 61 is provided with a plurality of fins 62, and the bottom of the metal casing 61 is provided with a liquid outlet; the fins 62 are arranged in a staggered mode, the length of each fin 62 is 70% -90% of the length of the inner cavity of the condenser along the direction of the fins 62, and a second power pump 8 is arranged on a pipeline between the condenser and the buffer tank 5. Through the length of fin 62 in the increase condenser 6, increase the area of contact of gas and fin to improve the condensation effect, provide the traction of miniwatt through setting up second power pump 8, can effectively ensure mobility, avoid holding back the refluence that the gas leads to in the condenser 6. In addition, the liquid outlet is connected to the input end of the liquid storage tank 1, thereby further facilitating the recovery of the hydrogen storage medium.

Other parts of the application are not improved and are the same as the prior art, so the description is omitted.

Claims

1. A preheated dehydrogenation apparatus, comprising:

the device is characterized by further comprising a preheating power supply, the pipeline connecting the liquid storage tank and the dehydrogenation reactor is a hard pipe and comprises a plurality of sections of heating sections, wherein net-shaped heating wires are arranged in the heating sections, supported on the inner wall of the pipeline and connected to the preheating power supply through wires.

2. The preheat dehydrogenation apparatus of claim 1, wherein the heating section is distributed after the first power pump.

3. The preheating dehydrogenation apparatus of claim 1, wherein each heating section is followed by a temperature sensor.

4. The preheated dehydrogenation apparatus of claim 1, wherein the heating section is a metal tube.

5. The preheating dehydrogenation apparatus according to claim 2, wherein the piping connecting the first power pump and the dehydrogenation reactor comprises a heating section and a non-heating section, and a connecting joint, and adjacent heating sections and non-heating sections are connected by the connecting joint.

6. The preheating dehydrogenation apparatus according to claim 5, wherein the non-heating section is a plastic pipe.

7. The preheating dehydrogenation apparatus according to claim 5, wherein the heating section is wrapped with an insulating layer.

8. The preheating dehydrogenation apparatus according to claim 5, wherein the connecting joint is provided at both ends thereof with external threads, and the heating section and the non-heating section are provided at both ends thereof with internal threads that are engaged with the external threads.

9. The preheating dehydrogenation device as claimed in claim 1, wherein the condenser comprises a metal housing, two ends of the metal housing are respectively provided with an air inlet hole and an air outlet hole, the inner wall of the metal housing is provided with a plurality of fins, and the bottom of the metal housing is provided with a liquid outlet; the fins are arranged in a staggered mode, the length of each fin is 70% -90% of the length of the inner cavity of the condenser along the direction of the fin, and a second power pump is arranged on a pipeline between the condenser and the buffer tank.

10. The preheating dehydrogenation apparatus of claim 9, wherein the liquid outlet is connected to an input of a liquid storage tank.