Ignition and combustion device for natural gas reforming hydrogen generator

Abstract

The invention discloses an ignition and combustion device for a natural gas reforming hydrogen generator. The ignition and combustion device comprises an outer cylinder body with a sealed top end, wherein a stable combustion sheet covers the position of the opening of the bottom end of the outer cylinder body in a sealed manner; the bottom end of a combustion outer tube penetrates through a firstthrough hole located at the central part of the top end of the outer cylinder body in a sealed manner and is in sealed connection with the through hole located at the central part of the stable combustion sheet; an ignition electrode ceramic tube with an ignition electrode wire is connected with an ignition rod to constitute an integral ignition rod; the upper part of the ignition rod is fixedly provided with a locking nut; the top part of the combustion outer tube is provided with a threaded section matching with the locking nut; the ignition rod extends into the tube chamber of the combustion outer tube and is fixedly arranged in the tube chamber of the combustion outer tube through threaded engagement of the locking nut with the threaded section; a first mixed gas inlet is arranged on the wall of the combustion outer tube located outside of the outer cylinder body; a second mixed gas inlet is arranged on the outer cylinder body; a mixed gas channel communicating with the second mixed gas inlet is also arranged in the outer cylinder body; and a plurality of jet holes are arranged on the stable combustion sheet. The device provided by the invention has the advantages of high safety performance, long service life and high combustion efficiency.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by reforming natural gas, in particular to an ignition combustion device of a hydrogen production device by reforming natural gas. Background technique [0002] Due to its advantages of high efficiency, cleanliness, and safety, hydrogen energy is regarded as the most promising clean energy in the 21st century. At present, hydrogen production mainly includes three ways: natural gas reforming hydrogen production, electrolytic water hydrogen production and industrial by-product hydrogen. Among them, the main reaction of natural gas reforming to produce hydrogen is the conversion reaction of methane and steam. The conversion reaction is a strong endothermic reaction with a high enthalpy value. During the reaction, the system temperature is 600°C-800°C and the pressure is 25×10 5 Pa~35×10 5 Pa, so it is necessary to burn natural gas inside the natural gas reforming hydrogen production uni...

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Problems solved by technology

[0004] 1. The ignition state of this structure is unstable. When the gap between the ignition electrodes does not meet the design requirements or carbon deposits occur at the end of the ignition rod, it will lead to failure to ignite and burn;

[0005] 2. The structure uses the upper part of the combustion chamber to ignite, which may easily lead to incomplete combustion in the combustion chamber;

[0006] 3. After the structure is ignited and burned, the combustion chamber is flaming combustion, and the highest point of the flame combustion temperature is around the flame. Since the flame is in the upper part of the combustion chamber and is relatively close to the stabilizing plate, it is very easy to backfire in the combustion outer tube. cause safety accident

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