Design of Preparatory Coal Workshop for Coking Plant
Abstract
The preparatory coal workshop of a coking plant mainly includes workshop area, coal yard area, coal conveying, intensive maintenance site and other functional areas. This paper mainly introduces the characteristics and design parameters of each functional area in the preparatory coking plant in order to assist the coking plant to reach the best possible preparatory coal workshop design.
1. Introduction
Coke preparation is the important links in the coking process. The preparatory coal workshop mainly including workshop area, coal yard area and coal conveying, intensive maintenance site and other functional areas. This links affects the selection, use and process of the coking coal, must reasonable design to ensure the workshop normal operation, improve production efficiency and safety factor.
2. Characteristics of each functional area
2.1 Workshop Area
The workshop area mainly consists of preparatory workshop and internal environment repair workshop. The preparation workshop is where the coking coal is unloaded and handled. The motor in the workshop plays an important role in the transfer of coal. The workshop should have an unobstructed area for easy handling over time. The internal repair workshop provides repair equipment and spare parts for machinery and machinery maintenance, can ensure the smooth progress of coking coal transportation, loading and unloading.
2.2 Coal Yard Area
The coal yard area is a place for stockpiling coking coal. The coal yard area must have a large area to facilitate the dumping of large-size coking coal, and the coal yard area should have high and low level for production convenience.
2.3 Coal Conveying
The coal conveying includes the road transportation and railway transportation. In order to reduce the mechanical damage to the coking coal during transportation, it is necessary to lay the rubber or EVA mats between the coal and the ground to reduce the vibration and bounce of the coal. The environment must be maintained to prevent the rain, snow, dust and the droplets of wash water from entering the coal. The coal storage area should be designed to allow the vehicles to drive in and out at any time, and the road should be designed to be as flat as possible to reduce mechanical wear.
2.4 Intensive Maintenance Site
Regular maintenance of the preparatory workshop and equipment must be carried out to reduce mechanical failure and production downtime. The intensive maintenance site should have sufficient space for the maintenance of machinery and machinery, convenient for personnel access and safe. In the intensive maintenance site, there should have enough maintenance tools, devices and other necessary conditions.
3. Design Parameters
3.1 Preparatory Workshop Area
The preparatory workshop area should occupy about 10-20% of the total area of the preparatory coal workshop. The width of the workshop should be more than 10 m and the height of the workshop should be more than 6.5 m. The width of the entrance should be more than 5 m and the height of the entrance should be more than 4 m. All the mechanized handling equipment must be set in the workshop.
3.2 Coal Yard Area
The width of the coal yard area should be more than 20 m, the height of the top should be more than 3 m and the level difference of the bottom should be more than 2 m. The empty area of coal yard should be more than 200 m2.
3.3 Coal Conveying
The distance between the preparation workshop and the coal storage area should not be too far away. The width of the road should be more than 8 m. The slope of the road should be less than 8° and the surface of the road should be flat. The surface of the road should be covered with rubber or EVA mats and the cages for the coal should be set up to prevent the coal from rolling.
3.4 Intensive Maintenance Site
The heavy maintenance site should occupy about 9.0%-12.0% of the total area of the preparatory coal workshop. All necessary maintenance tools and equipment should be placed in the intensive maintenance site. The area of each intensive maintenance center should be more than 500 m2 including offices and restrooms. The entrance area of the site should be higher than 1.5 m so that the large-size maintenance machinery can be easily transported into the site.
4. Conclusion
The preparatory coal workshop of coking plant is an important link that affects the selection, use and process of coking coal. In order to ensure the normal operation and improve the production efficiency and safety factor, it is necessary to reasonable design. Through the introduction of the characteristics and design parameters of each functional area in the preparatory coal workshop, it can provide reference for the coking plant to reach the best possible preparatory coal workshop design.
