Process and equipment for drying solid waste material using gas from a clinker cooler
A solid waste and cooler technology, which is applied in the direction of heating to dry solid materials, dry solid materials, solid fuels, etc., can solve the problems of hidden, high cost, and high residence time of waste materials, and achieve simple structure and low cost Effect
Active Publication Date: 2015-07-15
HOLCIM
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Problems solved by technology
First, it implies a high cost of installing this dryer and its connection to other parts of the cement plant
In addition, the residence time of the waste material during the process is very high
Method used
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Embodiment
[0083] use figure 1 device shown in . The shredding unit consisted of a primary shredder (magnetic separator, simple wind shifter (with approximately 5% shedding) and a secondary shredder. The input material consisted of municipal waste material. At the outlet of the device, the maximum size of the particles of the waste material is about 35mm. The drying pipe 40 is about 37 meters long and has a diameter of 600mm. It includes an upward section, a curved section 46 and a downward section 48 with a height of about 25 meters. Line 52 The clinker cooler discharge gas is available at a temperature of 250 to 300°C.
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Abstract
The invention relates to a process for drying solid wastes comprising: - providing a drying pipe (40) comprising an upwards section (44); - feeding solid wastes to be dried at a feeding point (32), located at the bottom of said upwards section; - feeding a drying gas in said upwards section at a speed superior to 15 m / s, in particular to 20 m / s, said drying gas comprising exhaust gas from a clinker cooler, so as to create an upwards flow of said wastes in said upwards section; and - separating a final drying gas and dried solid wastes, downstream drying pipe. The invention also relates to an equipment for drying solid waste.
Description
technical field [0001] The present invention relates to a method and an apparatus for drying solid waste material, a method for producing clinker comprising such a drying method, and to a clinker plant comprising such a drying apparatus. Background technique [0002] In the production of conventional clinker, the raw meal is conveyed to a high temperature processing zone, which may include pre-heaters and calciners to condition the raw meal before it is introduced into the rotary kiln in which the clinker is produced. The main kiln and calciner are heated by burners using coal, oil or natural gas as fuel. At the outlet of the rotary kiln, the hot clinker is introduced into a cooler into which large quantities of air are blown through the layers of the clinker, thereby reducing its temperature to about 80°C. [0003] One of the largest cost items in the production of clinker is the cost of fuel. With coal, oil and natural gas prices increasing day by day, people are constan...
Claims
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IPC IPC(8): C04B7/44C10L5/00F26B3/00C04B7/43F26B3/10
CPCF26B3/10C04B7/4423F26B17/101F26B17/105F26B17/107Y02P40/121Y02P40/125C04B7/475
Inventor B·科克
Owner HOLCIM
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