Zero gas generator with methanation function

Abstract

The zero gas generator comprises a shell, a module is installed in the shell, a top cover is installed at the top end of the shell in a clamped mode, a gland is installed in the middle of the top end of the top cover, one side of the top end of the module is fixedly communicated with a hydrocarbon removal catalyst hose, and the other side of the top end of the module is fixedly communicated with a nickel catalyst hose. The zero gas generator with the methanation function is characterized in that an electric heating rod extending to the outside is installed in the middle of the top end of the module, and a platinum thermal resistor located on one side of the electric heating rod is installed on the module. Measurement components and hydrogen are mixed and then enter the inside through a methanation inlet to react with a nickel catalyst, compressed air enters the inside through a zero gas generator inlet to react with a hydrocarbon removal catalyst, the two reactions do not influence each other, the installation size is reduced, the device is directly installed in an analyzer column box, and the installation flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical process analysis, in particular to a zero gas generator with methanation. Background Art

[0002] Zero gas generator is a portable clean air generating device with an integrated design. As a dilution source for a dynamic gas distributor, it can prepare standard gases of different concentrations. Zero gas generators are widely used in metrological verification, environmental monitoring, scientific research, etc. They are light in weight and easy to carry, making them particularly suitable for field use. The basic principle is to filter out pollutants in the air such as SO2, H2S, NO, NO2, NOX, O3, and HC through physical and chemical methods such as water removal, adsorption, filtration, and oxidation, and output clean air of a specific pressure and flow rate.

[0003] Traditional zero gas generators in the chemical analysis industry are external, installed outside the instrument, and equipped with an explosion-proof box. The methanogen is also installed in the analyzer as a separate accessory.

[0004] However, traditional zero gas generators have the following disadvantages:

[0005] The external zero gas generator is large in size and takes up a lot of space when installed. More complex analyzers do not have that much installation space. Utility Model Content

[0006] The utility model aims to provide a zero gas generator with methanogenization to solve the problem that the external zero gas generator proposed in the above background technology is large in size and occupies a large installation space, and a relatively complex analyzer does not have such a large installation space.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a zero gas generator with methanation, comprising a shell, a module installed inside the shell, a top cover installed at the top of the shell, a gland installed in the middle of the top of the top cover, a hydrocarbon removal catalyst hose fixedly connected to one side of the top of the module, a nickel catalyst hose fixedly connected to the other side of the top of the module, an electric heating rod extending to the outside installed in the middle of the top of the module, a platinum thermal resistor located on one side of the electric heating rod installed on the module, a zero gas generator outlet opened on one side of the top of the top cover, and a methanation outlet opened on the other side of the top of the top cover.

[0008] Preferably, the top cover is provided with a zero gas generator inlet located on one side of the zero gas generator outlet, and compressed air enters the interior through the zero gas generator inlet, reacts with the hydrocarbon removal catalyst in the high-temperature hydrocarbon removal catalyst hose, decomposes hydrocarbons in the air into water and carbon dioxide, and then is discharged through the zero gas generator outlet.

[0009] Preferably, the top cover is provided with a methanation inlet located on one side of the methanation outlet, and the measuring component and hydrogen are mixed and enter the interior through the methanation inlet, reacting with the nickel catalyst in the high-temperature nickel catalyst hose to convert carbon monoxide and carbon dioxide into measurable methane, which is then discharged through the methanation outlet.

[0010] Preferably, a cable extending to the outside is installed inside the gland.

[0011] Preferably, four connectors arranged in a rectangular shape are fixedly mounted on the top of the top cover.

[0012] Preferably, thermal insulation cotton is laid at the connection between the shell and the module, and high temperature resistant thermal insulation cotton is filled in the shell to ensure that the surface temperature of the methanogenic zero gas generator is controlled within 70°C.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The zero gas generator and the methanation converter are combined together. The measuring components and hydrogen are mixed and enter the interior through the methanation inlet to react with the nickel catalyst. The compressed air enters the interior through the zero gas generator inlet and reacts with the hydrocarbon removal catalyst. The reactions of the two do not affect each other and the installation volume is reduced. It is directly installed inside the analyzer column box, which improves the flexibility of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model;

[0016] Figure 2 It is a top view of the utility model.

[0017] In the figure: 1. Shell; 2. Module; 3. Electric heating rod; 4. Platinum thermal resistor; 5. Hydrocarbon removal catalyst hose; 6. Nickel catalyst hose; 7. Insulation cotton; 8. Connector; 9. Gland; 10. Cable; 11. Top cover; 12. Zero gas generator outlet; 13. Zero gas generator inlet; 14. Methanation outlet; 15. Methanation inlet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-2The utility model provides a zero gas generator with methanation, including a shell 1, a module 2 is installed inside the shell 1, a top cover 11 is installed on the top of the shell 1, a gland 9 is installed in the middle of the top of the top cover 11, a hydrocarbon removal catalyst hose 5 is fixedly connected to one side of the top of the module 2, a nickel catalyst hose 6 is fixedly connected to the other side of the top of the module 2, an electric heating rod 3 extending to the outside is installed in the middle of the top of the module 2, a platinum thermal resistor 4 located on one side of the electric heating rod 3 is installed on the module 2, a zero gas generator outlet 12 is opened on one side of the top of the top cover 11, and a methanation outlet 14 is opened on the other side of the top of the top cover 11.

[0020] The top cover 11 is provided with a zero gas generator inlet 13 located on one side of the zero gas generator outlet 12. Compressed air enters the interior through the zero gas generator inlet 13 and reacts with the hydrocarbon removal catalyst in the high-temperature hydrocarbon removal catalyst hose 5 to decompose hydrocarbons in the air into water and carbon dioxide, which are then discharged through the zero gas generator outlet 12.

[0021] The top cover 11 is provided with a methanation inlet 15 located on one side of the methanation outlet 14 . The measuring component and hydrogen are mixed and enter the interior through the methanation inlet 15 , reacting with the nickel catalyst in the high-temperature nickel catalyst hose 6 to convert carbon monoxide and carbon dioxide into measurable methane, which is then discharged through the methanation outlet 14 .

[0022] A cable 10 extending to the outside is installed inside Gland 9.

[0023] Four connectors 8 arranged in a rectangular shape are fixedly mounted on the top of the top cover 11 .

[0024] The connection between the shell 1 and the module 2 is paved with heat-insulating cotton 7, and the shell 1 is filled with high-temperature resistant heat-insulating cotton 7 to ensure that the surface temperature of the methanogenic zero-gas generator is controlled within 70°C.

[0025] When the embodiment of the present application is in use: after power is turned on, the electric heating rod 3 starts to heat, the temperature of the measuring module 2 on the platinum thermal resistor 4 is controlled at 375°C by an external temperature control program, and the shell 1 is filled with high-temperature resistant thermal insulation cotton 7 to ensure that the surface temperature of the methanation zero gas generator is controlled within 70°C. Compressed air enters the interior through the zero gas generator inlet 13 and reacts with the hydrocarbon removal catalyst in the high-temperature hydrocarbon removal catalyst hose 5 to decompose the hydrocarbons in the air into water and carbon dioxide. The measuring component and hydrogen are mixed and enter the interior through the methanation inlet 15 to react with the nickel catalyst in the high-temperature nickel catalyst hose 6 to convert carbon monoxide and carbon dioxide into measurable methane. The zero gas generator and the methanation converter are combined together to reduce the installation volume. The size is only 85*85*140mm, and it can be directly installed inside the analyzer column box.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A zero gas generator with methanogenation, comprising a housing (1), characterized in that: A module (2) is installed inside the shell (1), a top cover (11) is snap-fitted and installed at the top of the shell (1), a gland (9) is installed in the middle of the top of the top cover (11), one side of the top of the module (2) is fixedly connected to a hydrocarbon removal catalyst hose (5), the other side of the top of the module (2) is fixedly connected to a nickel catalyst hose (6), an electric heating rod (3) extending to the outside is installed in the middle of the top of the module (2), a platinum thermal resistor (4) located on one side of the electric heating rod (3) is installed on the module (2), a zero gas generator outlet (12) is opened on one side of the top of the top cover (11), and a methanation outlet (14) is opened on the other side of the top of the top cover (11).

2. A zero gas generator with methanogenation according to claim 1, characterized in that: The top cover (11) is provided with a zero gas generator inlet (13) located on one side of the zero gas generator outlet (12).

3. A zero gas generator with methanogenation according to claim 1, characterized in that: The top cover (11) is provided with a methanation inlet (15) located on one side of the methanation outlet (14).

4. A zero gas generator with methanogenation according to claim 1, characterized in that: A cable (10) extending to the outside is installed inside the gland (9).

5. A zero gas generator with methanogenation according to claim 1, characterized in that: Four connectors (8) arranged in a rectangular shape are fixedly mounted on the top of the top cover (11).

6. A zero gas generator with methanogenation according to claim 1, characterized in that: The connection between the shell (1) and the module (2) is provided with thermal insulation cotton (7).

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