Parallel connection buffer type hydrogen-free carbonized carbon tube furnace system and production process thereof

Abstract

The invention discloses a parallel connection buffer type hydrogen-free carbonized carbon tube furnace system and a production process thereof. The system comprises a plurality of carbon tube furnaces, two tubular buffers, quick hot plug group valves, quick joints, stop valves and connection hoses, wherein the two tubular buffers are communicated with a furnace head and a furnace tail of each carbon tube furnace respectively; the furnace head and the furnace tail of each carbon tube furnace and the tubular buffers are in threaded connection with a quick hot plug group valve on the carbon tube furnace; one quick joint is in threaded connection with the other end of the quick hot plug group valve, and the other quick joint is in threaded connection with a stop valve of which the other end is in threaded connection with a tubular buffer; both ends of the connection hose are inserted into inserting openings at the other ends of two quick joints respectively; a communicating pipe provided with two communicating valves is connected between the two tubular buffers; each tubular buffer is provided with a plurality of burnt-out pipes provided with valves; and the furnace head and the furnace tail of each carbon tube furnace are provided with burnt-out pipes provided with valves respectively. The parallel connection buffer type hydrogen-free carbonized carbon tube furnace system applies airflow buffering technology and recovered CO gas to realize hydrogen-free carbonization and can also output CO.

Description

technical field [0001] The invention relates to production technology and equipment for refractory metal carbides, in particular to the technology and equipment for realizing hydrogen-free carbonization by recovering and reusing CO gas generated in a carbon tube furnace. Background technique [0002] The carbonization of refractory metal carbides is often carried out in a horizontal carbon tube furnace, and the carbonization temperature is generally 1400°C to 2400°C. During the carbonization process, in order to prevent air from entering the furnace to form an explosive mixture, an externally introduced hydrogen flow is used as a positive pressure protection gas, which is the so-called hydrogen carbonization process. Hydrogen, together with CO gas produced during the carbonization process, is drawn out at the tail and head of the carbon tube furnace, and is ignited and burned to the air. One of the reasons for burnout is to prevent CO gas from escaping into the air in the f...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical defects of the above-mentioned hydrogen carbonization that consumes hydrogen and burns out CO gas in the air, and that the self-supporting hydrogen-free carbonization technology has unstable product quality and potential safety hazards, and provides a parallel buffering non-hydrogen carbonization technology. Hydrocarbon carbon tube furnace system and its production process, it connects multiple carbon tube furnaces in parallel, recovers the CO gas generated in the carbon tube furnace, and uses the recovered CO gas instead of hydrogen as the protective gas for high-temperature carbonization, realizing the carbon tube furnace No hydrocarbonation, stable quality of carbonized products and safe production

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