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

• US 20110065057A1
• Filed: 09/16/2010
• Published: 03/17/2011
• 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. Industria e Comercio
• Inventors: Gomes, Manuel Lind, Santana, Elcio, Rocha, Ivo Ribeiro da, Silva, Edinaldo Pereira da, Brandão, Genivaldo Linhares
• Granted Patent: US 8,932,050 B2
• Time in Patent Office: Days
• 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 the temperatures of the calcinating and discharge zone, a thermocouple for measuring the outlet temperature of gases from the furnace, and a drive system composed of a crown, pinion, gearing and engine for providing circular movement of the furnace or its cylindrical body, wherein a lower end of the furnace having a discharge breadth constitutes a fixed part and an opposed and highest side constitutes another fixed part;

a scoop feeder installed through the discharge breadth;

a rotating cooler coupled to the 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 chute, a first mat transporter for carrying the green coke into the silo and a second mat transporter at an outlet of the silo for transportation to the furnace,

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

2. The system according to claim 1, wherein a lower part of the silo has two integrated discharge breadths, each equipped with pneumatic rammers, and an opening with modified angles to ensure flow of the raw material, wherein a mat transporter with a dynamic weighing device for load control is disposed under each discharge breadth, aligned with each other, so that both mat transporters are laid over another discharge breadth of the silo which is positioned over an end of the second mat transporter, said second mat transporter being coupled to a feeding set which unloads the green coke into a fall set.

3. The system according to claim 2, wherein the fall set 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 feeding set, a first straight part positioned on a fixed part beside a superior side of said discharge breadth of the furnace or at an outside of the rotating furnace, wherein an inferior part of the free fall tube is inclined toward an inside of the furnace, and ends near a lowest part of the furnace, and wherein an internal diameter of the furnace is equipped with several wings.