Supply means of a rotating furnace used for calcination of oil green coke

• US 8,932,050 B2
• Filed: 09/16/2010
• Issued: 01/13/2015
• Est. Priority Date: 09/17/2009
• Status: Active Grant

• Current Assignee: Petrocooue S/A Industria E Comercio, Petrocoque S.A. Industria e Comercio
• Original Assignee: Petrocoque S/A Indústria e Comércio
• Inventors: da Silva, Edinaldo Pereira, Santana, Elcio, Gomes, Manuel Lind, da Rocha, Ivo Ribeiro, Brando, Genivaldo Linhares
• Primary Examiner(s): McAllister, Steven B
• Assistant Examiner(s): GORMAN, ERIC DAVID
• Application Number:
  US12/807,985
• Publication Number:
  US 20110065057A1
• Time in Patent Office: 1,580 Days
• Field of Search: None
• US Class Current: 432/77
• CPC Class Codes: F27B 7/10 internally heated, e.g. by means of passages in the wall
• CPC Class Codes: F27B 7/20 Details, accessories, or equipment peculiar to rotary-drum furnaces
• CPC Class Codes: F27B 7/32 Arrangement of devices for charging

Abstract

A system for calcination of oil green coke has a rotating furnace and a rotating cooler, the furnace being serviced by boiler, a combustion chamber and a chimney. There is a feeding system defined by a first mat carrying the green coke into a silo and another mat transporter to feed the furnace. At the end of the silo there are two discharge breadths for the oil green coke, where each breadth has two drawer-like feeders for feeding the green coke onto the mat transporter and, from this to the inside of the rotating furnace through a fall set.

Claims

1. A system for calcination of oil green coke, comprising:

a rotating furnace comprising;

a rotating cylinder,

air blowers,

fans,

a burner,

a measuring system that uses optical pyrometry to measure a temperature of a calcinating and discharge zone,

a thermocouple for measuring an outlet temperature of gases from the rotating furnace, and

a drive system composed of a crown, a pinion, gearing and an engine for providing circular movement of the rotating furnace or its cylindrical body, wherein a lower end of the rotating furnace having a discharge outlet that constitutes a fixed part and an opposed and highest side constitutes another fixed part;

a rotating cooler coupled to the rotating furnace, said rotating cooler having a cylindrical rotating body which, at one end, has a product entrance and extinguishing water entrance, and, at another end another water entrance, said cooler having a vapor air collection unit and a rotation drive unit;

a boiler;

a combustion chamber;

a chimney; and

a feeding system connected to the chimney and comprising a silo having a first chute, a first belt conveyor for carrying the green coke into the silo and a second belt conveyor at an outlet of the silo for transportation to the rotating furnace,

a third belt conveyor receivingly coupled to the second belt conveyor;

a second chute receivingly coupled to the third belt conveyor;

wherein said second chute is coupled to said rotating furnace, wherein said rotating furnace comprises a plurality of dragging wings which are bent;

wherein said first chute directs supplied material to two opposite sides such that an exit of the first chute is formed by a septum having a division wall, for receiving raw material of several qualities and sources;

wherein a lower part of the silo has two integrated discharge outlets, each equipped with pneumatic rammers, and an opening with modified angles to ensure flow of the raw material, a plurality of dynamic weighing belt conveyors with a dynamic weighing device for load control is disposed under each discharge outlet, aligned with each other, wherein a central discharge chute of the silo is positioned over an end of the second belt conveyor, said second belt conveyor being coupled to said third belt conveyor which unloads the green coke into said second chute;

wherein a top of the silo comprises said first chute which provides a means for flexible routing of the material stocked at two opposite sides and, therefore, said first chute has its output defined by said septum which together with said division wall provides a means for receiving green coke of different qualities and different sources.

2. The system according to claim 1, wherein said second chute has a high-temperature resistant free fall tube with a first vertical superior part having an end that is adapted to be coupled to the third belt conveyor, a first straight part positioned on a fixed part beside a superior side of said discharge outlet of the rotating furnace or at an outside of the rotating furnace, wherein an inferior part of the second chute is inclined toward an inside of the rotating furnace, and ends near a lowest part of the rotating furnace.