Process for calcining petroleum coke

A calcination process and petroleum coke technology, applied in the field of coking, can solve the problems of combustible gas overflow obstruction, furnace blockage, easy deformation, etc., and achieve the effects of being conducive to temperature control and stability, sufficient and timely overflow, and reducing high-temperature deformation
CN101792135AActive Publication Date: 2010-08-04WEIFANG LIANXING NEW MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WEIFANG LIANXING NEW MATERIAL TECH
Publication Date
2010-08-04

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Abstract

The invention discloses a process for calcining petroleum coke. The calcination of the petroleum coke is carried out in a tank type calcining furnace, and the tank body of the tank type calcining furnace is provided with a preheating zone and 6-8 calcining zones sequentially from top to bottom, wherein the calcining temperature of the first calcining zone at the uppermost part is controlled in the maximum calcining temperature interval allowed by the petroleum coke; the calcining temperature of the second calcining zone in the downstream position of the first calcining zone is kept in the maximum calcining temperature interval and is not higher than the calcining temperature of the first calcining zone; starting from the third calcining zone, the calcining temperature of each calcining zone gradually reduces relative to the calcining temperature of the adjacent calcining zone in the upstream position; and in the undermost calcining zone, the calcining temperature is reduced to the discharging temperature. In the invention, when the petroleum coke is calcined, the high temperature zone is positioned at the top end of the calcining furnace, thereby relieving the high temperature deformation phenomenon of the furnace body, being more favorable for overflow of combustible gas in the petroleum coke, reducing the corrosion of the combustible gas on wall bricks, and being favorable for prolonging the service life of the tank type furnace.
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Description

technical field

[0001] The invention relates to the technical field of coking, in particular to a petroleum coke calcination process. Background technique

[0002] Petroleum coke is a petroleum product obtained by distilling crude oil to separate light and heavy oils. The appearance is black or dark gray hard solid with metallic luster. It is a granular, columnar or needle-shaped carbon body formed by tiny graphite crystals. The main purpose of petroleum coke is to produce carbon products, such as graphite electrodes and anode arcs, to provide steelmaking, non-ferrous metals, aluminum smelting, and to produce silicon carbide products, or as fuel. Petroleum coke produced from petroleum coke factories is also called green coke, which contains some combustible gases of uncarbonized hydrocarbons. Green coke can be used as fuel-grade petroleum coke. If it is used as a carbon product, it must be treated The coke is calcined at high temperature to remove the combustible gas contai...

Claims

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