发明授权
US09180427B2 Calcination apparatus, process for producing oxide catalyst, and process for producing unsaturated acid or unsaturated nitrile 有权
煅烧装置,氧化物催化剂的制造方法以及不饱和腈或不饱和腈的制造方法

Calcination apparatus, process for producing oxide catalyst, and process for producing unsaturated acid or unsaturated nitrile
摘要:
Disclosed is a calcination apparatus, including: a calcination tube having open ends at both terminals; a pair of hoods, each hood covering each open end of the calcination tube; and a pair of rings, each ring sealing a gap between the calcination tube and the hood, wherein the rings are directly or indirectly fixed on an outer surface of the calcination tube; a groove is provided along a circumferential direction of the ring at a contact surface side between the ring and the hood; a sealed chamber surrounded by the hood and the groove is formed; and both the calcination tube and the rings rotate in a circumferential direction of the calcination tube while keeping the hood in contact with both sides of the groove.
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