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本文就含氧量较高的工业氮作为保护气氛在热处理上的应用进行了热力学分析和试验。证明采用制氧站排放的气氮作为保护气氛以代替丙烷气或天然气制备保护气氛,是热处理领域内充分利用资源和节省能源的一项重要措施。用工业氮作为保护气氛对拥有制氧站的工厂将带来很大的经济收益,在比较了合氧量较高的工业氮和在CO_2—CO—H_2O—H_2—N_2气系中钢的加热过程以及进行的热力学分析,证明效果相同。
In this paper, a thermodynamic analysis and experiment on the application of industrial nitrogen with high oxygen content as a protective atmosphere in heat treatment was carried out. It is proved that adopting the nitrogen gas emitted from the oxygen station as a protective atmosphere instead of propane gas or natural gas to prepare a protective atmosphere is an important measure to make full use of resources and save energy in the field of heat treatment. Using industrial nitrogen as the protective atmosphere will bring great economic benefits to the plant that owns the oxygen station. After comparing the industrial nitrogen with high oxygen content and the heating of steel in the CO_2-CO-H_2O-H_2-N_2 gas system The process as well as the thermodynamic analysis performed show that the effect is the same.