Ceramic high-efficiency air self-preheating type combustor

Abstract

The invention discloses a ceramic high-efficiency air self-preheating type combustor comprising a ceramic air guide pipe, a gas pipe installed in the ceramic air guide pipe, an ignition electrode and a ceramic combustion cavity, wherein the ceramic combustion cavity is arranged at the position of an opening at the front end of the ceramic air guide pipe; the front ends of the gas pipe and the ignition electrode extend into the ceramic combustion cavity; an air-intake shell with an air inlet is sleeved outside the rear end of the ceramic air guide pipe, a ceramic heat exchanger is sleeved outside the ceramic air guide pipe, the outer surface of the ceramic heat exchanger is provided with a plurality of concave-convex small spherical surfaces or groups of concave-convex fins, a gap positioned between the inner wall of the ceramic heat exchanger and the outer wall of the ceramic air guide pipe is communicated with the air-intake shell, a ceramic smoke gas guide pipe is also sleeved outside the ceramic heat exchanger, and the rear end of the ceramic smoke gas guide pipe is provided with a smoke gas outlet. The invention has reasonable structure, little energy consumption and harmful gas exhaust during combustion and high temperature resistance and is a ceramic high-efficiency air self-preheating type combustor widely applied into a kiln.

Description

technical field [0001] The invention relates to a kiln burner, in particular to a ceramic high-efficiency air self-preheating burner. Background technique [0002] At present, common kiln burners such as figure 1 As shown, it includes an air housing 1' with an air inlet 11' and a gas pipe 2' installed in it. An ignition electrode 3' is located inside the gas pipe 2'. When in use, the air flows from the air inlet 11' enters the air shell 1', and the combustible gas enters it from the gas inlet at the rear end of the gas pipe 2', and is mixed with air in a certain proportion at the mixing head 4' at the front end of the gas pipe 2' and is ignited The electrode 3' ignites and burns to form a stable flame. Although the structure of the burner with this structure is simple and the manufacturing cost is low, due to the structure, the burner consumes a large amount of gas during the combustion process. At the same time, the front end of the burner The flame temperature is high, a...

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Problems solved by technology

[0002] At present, common kiln burners such as figure 1 As shown, it includes an air housing 1' with an air inlet 11' and a gas pipe 2' installed in it. An ignition electrode 3' is located inside the gas pipe 2'. When in use, the air flows from the air inlet 11' enters the air shell 1', and the combustible gas enters it from the gas inlet at the rear end of the gas pipe 2', and is mixed with air in a certain proportion at the mixing head 4' at the front end of the gas pipe 2' and is ignited The electrode 3' ignites and burns to form a stable flame. Although the structure of the burner with this structure is simple and the manufacturing cost is low, due to the structure, the burner consumes a large amount of gas during the combustion process. At the same time, the front end of the burner The flame temperature is high, and the harmful gas emission is large. In view of the above shortcomings, it is necessary to make improvements

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