An integrated deoxygenation reactor for hydrogen

Abstract

A deoxidation integrated reactor for hydrogen, the reactor is a vertical tank, the heating catalytic reaction component comprises a heater and an internal heating catalytic pipeline, the internal heating catalytic pipeline is in the shape of a multi-layer U-shaped cavity tube, the interior of the internal heating catalytic pipeline is provided with a heating chamber and a catalytic chamber in a stacked and nested manner, the internal center of the internal heating catalytic pipeline is provided with a heating chamber vertically, the internal center of the heating chamber is provided with a heater vertically, the upper end of the heating chamber is provided with a reactor inlet in a transversely conductive manner, the outer side of the heating chamber is provided with a catalytic chamber in an outwardly wrapped manner, the bottom arc of the heating chamber is interconnected with the catalytic chamber through an airflow distribution hole, the bottom of the catalytic chamber is provided with a sewage outlet, and the bottom of the catalytic chamber is provided with a catalyst outlet in an obliquely penetrating manner. By adopting the characteristics of combining an electric heating tube with a deoxidizer, the heating chamber and the catalytic chamber are both arranged in one reaction chamber, the number of reactors and the space as well as the heat loss are reduced, and the reaction equipment is effectively and efficiently integrated into an integrated type.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen deoxygenation, and specifically relates to an integrated deoxygenation reactor for hydrogen. Background Art

[0002] Hydrogen deoxidizer, also known as hydrogen deaerator, in chemical production, the raw hydrogen often contains a small amount of oxygen. Due to the presence of oxygen, it does not meet the subsequent process requirements for hydrogen purity, nor does it meet safety requirements, so it needs to be removed. The deoxidizers in domestic hydrogen production and other industries all use the form of separate heaters and deoxidizers, and the poor heat transfer effect leads to low energy efficiency; and the reactor using an integrated deoxidizer often leads to a reaction dead zone due to the lack of measures for balanced airflow distribution, and the catalyst utilization efficiency is low; in addition, the traditional form of integrated deoxidizer design is often due to the catalyst stacking, without a multi-layer arrangement. In the actual reaction control process, the catalyst activity will decrease or disappear locally due to excessive sintering; these situations increase the safety risks of production operations. Utility Model Content

[0003] In order to solve the above problems, this paper proposes an integrated deoxygenation reactor for hydrogen, the reactor is a vertical tank body, the outer side of the vertical tank body is provided with a heat-insulating shell layer, the inner side of the heat-insulating shell layer is provided with a heating catalytic reaction component, the heating catalytic reaction component includes a heater and an internal heating catalytic pipeline, the shape of the internal heating catalytic pipeline is a multi-layer U-shaped cavity tube, the interior of the internal heating catalytic pipeline is provided with a heating cavity and a catalytic cavity in a stacked and nested manner, the inner center of the internal heating catalytic pipeline is provided with a heating cavity vertically, the inner center of the heating cavity is provided with a heater vertically, the upper end of the heating cavity is provided with a reactor inlet in a transversely conductive manner, the outer side of the heating cavity is provided with a catalytic cavity in an outward manner, and the bottom arc of the heating cavity passes through the airflow The distribution hole is communicated with the catalytic chamber, a sewage outlet is provided at the bottom of the catalytic chamber, a reactor outlet is transversely penetrated at the upper end of the catalytic chamber, a catalyst is provided inside the catalytic chamber, a catalyst filling port is obliquely penetrated at the middle of the catalytic chamber, a catalyst outlet is obliquely penetrated at the bottom of the catalytic chamber, the catalyst is divided into two layers by a catalyst support plate, a primary airflow distribution area is provided below the catalyst of the lower layer, a secondary airflow distribution area is provided between the bottom of the catalyst of the upper layer and the top of the catalyst of the lower layer, and the heating chamber and the catalytic chamber are both arranged by adopting the characteristics of combining the electric heating tube with the deoxidizer, so as to reduce the number and space of the reactors and effectively and efficiently integrate them into an integrated reaction equipment.

[0004] The shape of the thermal insulation shell is a cylindrical shell, and an insulation layer is provided between the thermal insulation shell and the heating catalytic reaction component. The outer surface of the thermal insulation shell is penetrated by a reactor inlet, a reactor outlet, a catalyst filling port and a catalyst discharge port. The thermal insulation shell and the thermal insulation layer can achieve an outsourced insulation effect for the heating catalytic reaction component, thereby ensuring that the heat of the heating catalytic reaction component will not overflow, thereby improving energy utilization, reducing energy consumption, and being able to play an integrated setting of the heating catalytic reaction component.

[0005] The heater is a straight-insert tube bundle heater. The outer side of the upper end of the heater is sealed and connected to the upper surface of the internal heating catalytic pipeline through a heater flange. A temperature gauge is connected between the heater and the heating chamber. The reactor inlet is a gas pipeline port. One end of the reactor inlet is arranged on the outside of the reactor, and the other end of the reactor inlet is connected to the inside of the heating chamber. The heating tube is arranged in the middle of the inner side of the internal heating catalytic pipeline, so that the inner cavity of the internal heating catalytic pipeline is formed into a heating chamber with only the bottom airflow distribution hole connected, and hydrogen is directly injected into it through the reactor inlet for preferential heating.

[0006] The reactor outlet is a gas pipeline outlet. One end of the reactor outlet is arranged on the outside of the reactor, and the other end of the reactor outlet is connected to the inside of the catalytic chamber. The outside of the reactor outlet is connected with pressure and temperature control instruments (the temperature is adjusted by PLC feedback, and the temperature and pressure are sensed and displayed, and the limits are set respectively, which are interlocked with the entire hydrogen production system as shown in the figure. Temperature sensors are set at the heating area and the reaction outlet for analysis and control interlocking. In addition, a pressure analysis instrument is also set at the outlet area). By setting the reactor outlet above the catalytic chamber, the hydrogen that has completed catalytic deoxygenation can be discharged from the top through the outlet.

[0007] The catalyst filling port is a material pipeline port, one end of the catalyst filling port is arranged on the outside of the reactor, and the other end of the catalyst filling port is respectively connected to the upper end of the catalyst in the upper layer and the upper end of the catalyst in the lower layer. By setting the catalyst filling port at the upper end of each layer of catalyst, the catalyst can be conveniently set and filled, thereby realizing quick and convenient replacement of external fillers.

[0008] The catalyst discharge port is a material pipeline port, one end of the catalyst discharge port is arranged on the outside of the reactor, and the other end of the catalyst discharge port is connected to the lower end of the catalyst in the upper layer and the lower end of the catalyst in the lower layer. By arranging the catalyst discharge port at the lower end of each layer of catalyst, it is convenient for the catalyst to be discharged directly from below.

[0009] The catalyst is filled in the catalytic cavity in the form of a ring. A catalyst supporting baffle is provided at the bottom of the catalyst. The catalyst supporting baffle is a bracket-type annular baffle. Air guide holes are provided on the surface of the catalyst supporting baffle. The air guide holes are dense supporting air holes. By arranging the catalyst supporting baffle in the catalytic cavity, it is easy to fill the catalyst and ensure that enough air flow distribution area is left vacant to allow hydrogen to move and rise, thereby successfully completing the catalysis.

[0010] The airflow distribution holes are micro airflow holes, and a number of the airflow distribution holes are arranged in an equidistant manner. The airflow distribution holes are arranged below the catalyst supporting baffle of the lower catalyst layer. The heating chamber and the catalytic chamber are connected through the airflow distribution holes, so that the heated hydrogen can enter the catalytic chamber through the airflow distribution holes, and the heated hydrogen passes through the primary airflow distribution area and the secondary airflow distribution area one by one to complete two catalytic reactions, and is discharged from the reactor outlet after deoxygenation.

[0011] Beneficial effects:

[0012] By combining the electric heating tube with the deoxidizer, the heating chamber and the catalytic chamber are arranged in the same reactor, the number and space of the reactors are reduced, and the reactors are effectively and efficiently integrated into an integrated reaction equipment.

[0013] The heat-insulating shell and the heat-insulating layer can realize the outsourcing heat-insulating effect of the heating catalytic reaction component, ensure the temperature of the heating catalytic reaction component, improve the energy utilization efficiency, reduce the energy consumption, and play the role of the integrated setting of the heating catalytic reaction component.

[0014] By arranging the catalyst filling port in the side wing airflow distribution area, the catalyst can be conveniently arranged and filled, thereby realizing fast and convenient external filling.

[0015] By providing a catalyst supporting baffle inside the catalytic chamber, it is easy to fill the catalyst and ensure that a sufficient airflow distribution area is left to allow hydrogen to move upward, thereby successfully completing the catalysis.

[0016] The heating chamber and the catalytic chamber are connected through the airflow distribution holes, so that the heated hydrogen can enter the catalytic chamber through the airflow distribution holes, and the heated hydrogen passes through the primary airflow distribution area and the secondary airflow distribution area one by one to complete two catalytic reactions, and the deoxygenated hydrogen is discharged from the reactor outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an internal cross-sectional view of an integrated deoxygenation reactor for hydrogen;

[0018] In the figure; 1, heater, 2, reactor outlet, 3, catalyst supporting baffle, 4, catalyst filling port, 5, catalyst discharge port, 6, air flow distribution hole, 7, primary air flow distribution area, 8, sewage outlet, 9, secondary air flow distribution area, 10, insulation shell, 11, insulation layer, 12, reactor inlet, 13, heater flange, 14, internal heating catalytic pipeline. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0020] Heater 1, reactor outlet 2, catalyst supporting baffle 3, catalyst filling port 4, catalyst discharge port 5, air flow distribution hole 6, primary air flow distribution area 7, sewage outlet 8, secondary air flow distribution area 9, insulation shell 10, insulation layer 11, reactor inlet 12, heater flange 13, internal heating catalytic pipeline 14.

[0021] like Figure 1 As shown;

[0022] A deoxidation integrated reactor for hydrogen, the reactor is a vertical tank body, the outer side of the vertical tank body is provided with a heat-insulating shell layer 10, the interior of the heat-insulating shell layer 10 is provided with a heating catalytic reaction component, the heating catalytic reaction component comprises a heater 1 and an internal heating catalytic pipeline 14, the shape of the internal heating catalytic pipeline 14 is a multi-layer U-shaped cavity tube, the interior of the internal heating catalytic pipeline 14 is provided with a heating cavity and a catalytic cavity in a stacked and nested manner, the interior center of the internal heating catalytic pipeline 14 is provided with a heating cavity vertically, the interior center of the heating cavity is provided with a heater 1 vertically, the upper end of the heating cavity is provided with a reactor inlet 12 in a transversely conductive manner, the outer side of the heating cavity is provided with a catalytic cavity in an outwardly wrapped manner, and the bottom arc of the heating cavity is connected to the catalytic cavity through an airflow distribution hole 6. The cavities are interconnected, a sewage outlet 8 is provided at the bottom of the catalytic chamber, a reactor outlet 2 is provided at the upper end of the catalytic chamber in a transversely penetrating manner, a catalyst is provided inside the catalytic chamber, a catalyst filling port 4 is provided obliquely through the middle of the catalytic chamber, a catalyst discharge port 5 is provided obliquely through the bottom of the catalytic chamber, the catalyst is provided in two layers separated by a catalyst support plate, a primary airflow distribution area 7 is provided below the catalyst of the lower layer, a secondary airflow distribution area 9 is provided between the lower part of the catalyst of the upper layer and the upper part of the catalyst of the lower layer, the shape of the heat-insulating shell 10 is a cylindrical shell, a heat-insulating layer 11 is provided between the heat-insulating shell 10 and the heated catalytic reaction component, and a reactor inlet 12 and a reactor outlet 13 are provided through the outer surface of the heat-insulating shell 10 Port 2, catalyst filling port 4 and catalyst discharge port 5, heater 1 is a straight-insert tube bundle heater 1, the outer side of the upper end of the heater 1 is sealed and connected to the upper surface of the internal heating catalytic pipeline 14 through a heater flange 13, a temperature gauge is connected between the heater 1 and the heating chamber, the reactor inlet 12 is a gas pipeline port, one end of the reactor inlet 12 is arranged outside the reactor, and the other end of the reactor inlet 12 is connected to the inside of the heating chamber, the reactor outlet 2 is a gas pipeline port, one end of the reactor outlet 2 is arranged outside the reactor, and the other end of the reactor outlet 2 is connected to the inside of the catalytic chamber, and the outside of the reactor outlet 2 is connected with a pressure and temperature control instrument, the catalyst filling port 4 is a material pipeline port, and one end of the catalyst filling port 4 is arranged at On the outside of the reactor, the other end of the catalyst filling port 4 is connected to the upper end of the catalyst in the upper layer and the upper end of the catalyst in the lower layer, the catalyst discharge port 5 is a material pipeline port, one end of the catalyst discharge port 5 is arranged on the outside of the reactor, and the other end of the catalyst discharge port 5 is connected to the lower end of the catalyst in the upper layer and the lower layer. The catalyst is filled in the catalyst cavity in the form of a ring, and a catalyst supporting baffle 3 is provided at the bottom of the catalyst. The catalyst supporting baffle 3 is a bracket-type annular baffle, and the surface of the catalyst supporting baffle 3 is provided with air guide holes, which are intensive supporting air holes, and the airflow distribution holes 6 are micro airflow holes. A number of airflow distribution holes 6 are arranged in an equidistant and orderly manner, and the airflow distribution holes 6 are arranged below the catalyst supporting baffle 3 of the catalyst in the lower layer.

[0023] Implementation examples;

[0024] Before use, two layers of catalyst are respectively arranged above the primary airflow distribution area 7 and the secondary airflow distribution area 9 through the catalyst filling port 4 and supported by the catalyst supporting baffle 3, and then the heater 1 is sealed and installed through the heater flange 13.

[0025] When in use, the reactor inlet 12 inputs hydrogen into the heating chamber, and the hydrogen is continuously heated by the heater 1. The heated hydrogen enters the catalytic chamber through the airflow distribution hole 6. Due to the continuous input of hydrogen pressure, it is continuously output and moved, so that the heated hydrogen passes through the primary airflow distribution area 7 and the secondary airflow distribution area 9 one by one, completing two catalytic reactions, and is discharged from the reactor outlet 2 after deoxygenation.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated deoxygenation reactor for hydrogen, the reactor is a vertical tank, the outer side of the vertical tank is provided with a heat-insulating shell layer, and the interior of the heat-insulating shell layer is provided with a heating catalytic reaction component, characterized in that: The heating catalytic reaction component includes a heater and an internal heating catalytic pipeline. The internal heating catalytic pipeline is shaped as a multi-layer U-shaped cavity tube. The internal heating catalytic pipeline is provided with a heating chamber and a catalytic chamber in a stacked and nested manner. The internal center of the internal heating catalytic pipeline is vertically provided with a heating chamber. The internal center of the heating chamber is vertically provided with a heater. The upper end of the heating chamber is horizontally conductively provided with a reactor inlet, the outer side of the heating chamber is outwardly provided with a catalytic chamber, and the bottom arc of the heating chamber is connected with the catalytic chamber through an airflow distribution hole. The bottom of the catalytic chamber is provided with a sewage outlet, the upper end of the catalytic chamber is horizontally penetrated with a reactor outlet, the inside of the catalytic chamber is provided with a catalyst, the middle of the catalytic chamber is obliquely penetrated with a catalyst filling port, and the bottom of the catalytic chamber is obliquely penetrated with a catalyst discharge port. The catalyst is divided into two layers by a catalyst support plate, a primary airflow distribution area is provided below the catalyst of the lower layer, and a secondary airflow distribution area is provided between the bottom of the upper catalyst and the top of the lower catalyst.

2. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The insulating shell is in the shape of a cylindrical shell, an insulating layer is arranged between the insulating shell and the heating catalytic reaction component, and a reactor inlet, a reactor outlet, a catalyst filling port and a catalyst discharge port are penetrated on the outer surface of the insulating shell.

3. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The heater is a straight-insertion tube bundle heater, the outer side of the upper end of the heater is sealed and connected to the upper surface of the internal heating catalytic pipeline through a heater flange, and a temperature gauge is connected between the heater and the heating chamber.

4. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The reactor inlet is a gas pipeline port, one end of the reactor inlet is arranged outside the reactor, and the other end of the reactor inlet is communicated with the interior of the heating chamber.

5. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The reactor outlet is a gas pipeline outlet, one end of the reactor outlet is arranged outside the reactor, and the other end of the reactor outlet is connected to the inside of the catalytic chamber. The outside of the reactor outlet is connected with pressure and temperature control instruments.

6. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The catalyst filling port is a material pipeline port, one end of which is arranged outside the reactor, and the other end of which is respectively connected to the upper end of the catalyst in the upper layer and the upper end of the catalyst in the lower layer.

7. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The catalyst outlet is a material pipeline outlet, one end of which is arranged outside the reactor, and the other end of which is connected to the catalyst in the upper layer and the lower end of the catalyst in the lower layer.

8. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The catalyst ring is filled inside the catalyst cavity, and a catalyst supporting baffle is provided at the bottom of the catalyst. The catalyst supporting baffle is a bracket-type annular baffle, and air guide holes are provided on the surface of the catalyst supporting baffle. The air guide holes are dense supporting air holes.

9. The integrated deoxygenation reactor for hydrogen according to claim 1, characterized in that: The airflow distribution holes are micro airflow holes, and a plurality of the airflow distribution holes are arranged in an equidistant and orderly manner. The airflow distribution holes are arranged below the catalyst supporting baffle of the catalyst in the lower layer.

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