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US 4,995,193 AGranted
Method of preventing adherence of ash to gasifier wall
AssigneeUbe Industries, Ltd.
InventorsKunio Soga, Kazuo Okada, Noriaki Tanaka, Morio Sogame, Toshio Tsujino
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Abstract
A method of preventing the adherence of the ash to a gasifier wall in a process for gasifying petroleum coke in the gasifier by partial oxidization reaction. The petroleum coke is mixed with 10 to 30 wt % of coal based on the petroleum coke and the mixture is gasified at a gasifying temperature higher than the melting point of the ash of said coal.
Claims4
A method of partially oxidizing petroleum coke and coal while preventing the adherence of the ash to the wall of a gasifier, said method comprising the steps of:
- pulverizing said petroleum coke and coal;
- introducing the pulverized petroleum coke, 10 to 30 wt % of coal based on said petroleum coke and oxygen in a smaller amount than the amount necessary for burning said petroleum coke and coal so as to partially gasify said petroleum coke and coal at a temperature higher than the melting point of the ash of said coal;
- blowing the gas produced during said partially oxidizing step to the water in a quench chamber through a throat and a dip tube in said gasifier;
- and taking out said gas which has passed through said water of said gasifier.
1 more element
Dependencies are inferred from the claim text.