Methanol low temperature cracking device

Abstract

The invention relates to a metal heat treatment protective gas preparation device, especially to a methanol low temperature cracking device. The device includes a cracking reactor and a condenser. A liquid inlet of the cracking reactor is connected to nitrogen and a methanol storage tank. A gas outlet of the cracking reactor is connected to the condenser. An outlet of the condenser is connected toan outlet-gas flowmeter. A heating device is mounted on the cracking reactor. The heating device is an electric heating tube. The electric heating tube is mounted on the top of the cracking reactor.A temperature sensor is also mounted on the cracking reactor. An inlet-liquid metering pump is mounted between the methanol storage tank and the liquid inlet. An inlet-gas flowmeter is mounted betweenthe nitrogen and the liquid inlet. The methanol low temperature cracking device provided by the invention has the advantages of simple structure, convenient use and maintenance, accuracy temperaturecontrol, large use temperature span, temperature cracking, high cracking efficiency, low energy consumption, uniform mixed atmosphere generated by cracking, wide application range, and high carbon potential of cracking gas which is up to 1.0%.

Description

technical field [0001] The invention relates to a metal heat treatment protective gas preparation device, especially a methanol low temperature cracking device. Background technique [0002] In the fields of metal heat treatment industry, new energy research and development, metallographic laboratory and other fields, with the improvement of the quality requirements of heat treatment processing in modern industry, protective atmosphere is generally used in heat treatment equipment to achieve less oxidation and less decarburization of workpieces. [0003] The existing methanol-based protective atmosphere is mainly prepared by high-temperature cracking equipment, which requires a pyrolysis reaction to prepare a protective atmosphere under high temperature conditions. The pipeline is easily blocked due to carbon deposition, and the failure rate is high; another kind of low-temperature cracking equipment adopts an oil bath structure, which is more complicated, and the operating ...

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Problems solved by technology

[0003] The existing methanol protective atmosphere preparation mainly adopts high-temperature cracking equipment, which needs cracking reaction to prepare protective atmosphere under high temperature conditions. The equipment investment cost is high, energy consumption is high, and the uniformity of reaction temperature is poor, which leads to insufficient cracking or over-burning cracking, The pipeline is easily blocked due to carbon deposits, and the failure rate is high; another kind of low-temperature cracking equipment adopts an oil bath structure, which is relatively complicated, and the operating temperature is limited by the boiling point of the oil, so the operating efficiency is not high

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