In the long-term operation of atmospheric and vacuum heat furnace that use vacuum heavy oil as fuel, thesurface of nailhead furnace tube in the convection chamber was seriously deposited.
以减压渣油为燃料的常减压加热炉在长期生产运行过程中，对流室钉头炉管表面结垢严重。
In the long-term operation of atmospheric and vacuum heat furnace that use vacuum heavy oil as fuel, thesurface of nailhead furnace tube in the convection chamber was seriously deposited.
以减压渣油为燃料的常减压加热炉在长期生产运行过程中，对流室钉头炉管表面结垢严重。
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