摘要:
The present technology is generally directed to integrated control of coke ovens in a coke plant in order to optimize coking rate, product recovery, byproducts and/or unit lime consumption Optimization objectives are achieved through controlling certain variables (called control variables) by manipulating available handles (called manipulated variables) subject to constraints and system disturbances that affect the controlled variables.
摘要:
The invention relates to a device for feeding and controlling secondary air from secondary air channels into flue gas channels of horizontal coking chamber ovens. The flue gas channels are thereby located under the coking chamber floor on which coking takes place. The flue gas channels serve for combusting partially combusted coking gases from the coking chamber. The partially combusted coking gases are combusted using secondary air, whereby the coke cake is also heated from below for uniform coking. The secondary air comes from the secondary air channels connected to outside air and to the flue gas channels. Control elements are installed in the connection channels between the flue gas channels and the secondary air channels and can precisely control the air flow in the flue gas channels. Significantly more uniform heating and heat distribution can thus be achieved in coking chamber furnaces. The actual control devices in the connecting channels can be formed by rotatable tube segments, bricks, or metal dampers. A stool-like device can also be used particularly advantageously, said device sitting in the secondary channels and having a hump plate having a central opening slid under the corresponding branch for controlling the gas flow. The control mechanism can be manually, electrically, or pneumatically actuated. The control device can thereby also be automated.
摘要:
The invention relates to a method for charging retorts in a battery of coke ovens, wherein coal is charged into the retorts by means of a charging car or via charging holes and the supply of coal is controlled or regulated according to the pressure inside the retort. According to said method, a) the coke is charged via the charging holes in a specific sequence and b) the charging gas pressure is measured and c) the charging height inside the retort is determined; d) the supply of coal is regulated according to the charging gas pressure and levelling begins if one of the two measuring values reaches a setpoint value and e) the position, direction of movement and speed of the leveller bar are also used to regulate the supply of coal once the levelling process begins.
摘要:
The invention concerns a method of completely filling horizontal coking ovens with bulk coal through apertures in the roof of the oven without causing pollution, the usable volume of the oven being determined during and/or after each coke-discharge operation and the amount of coal fed into the oven being automatically controlled as a function of this volume.
摘要:
A method for obtaining a parameter representative of a height (H) of an upper surface (29) of a material (20) stacked in a coke oven (10) with respect to a reference plane (P), comprising the following steps: - providing a sensor (47) located above the upper surface at an operation distance (D1) from the reference plane, the sensor and the material forming a capacitor having a capacitance, - obtaining at least one capacitance signal representative of said capacitance, - obtaining at least one distance signal (S2) using the capacitance signal, the distance signal being representative of a distance (D2) between the sensor and the upper surface along a vertical direction (Z), and - obtaining said parameter representative of the height using the distance signal and the operation distance.
摘要:
The present technology is generally directed to coal charging systems used with coke ovens. In some embodiments, a coal charging system includes a charging head having opposing wings that extend outwardly from the charging head, leaving an open pathway through which coal may be directed toward side edges of the coal bed. In other embodiments, an extrusion plate is positioned on a rearward face of the charging head and oriented to engage and compress coal as the coal is charged along a length of the coking oven. In other embodiments, charging plates extend outwardly from inward faces of opposing wings.
摘要:
A coke oven monitoring system capable of quantitatively monitoring changes in the state of the furnace walls in a coke oven with good accuracy has: an oven width measurement device (6) that measures the oven width; an in-furnace observation device (7) that photographs the oven walls; and a computer (10) that analyzes oven width data measured by the oven width measurement device, and oven wall image data captured by the in-furnace observation device. The computer is characterized by including: a oven width/oven wall image data extraction unit (10a) that extracts width data and oven wall image data in different extrusion cycles for the same location of the same kiln; and an oven width/oven wall image data analysis and processing unit (10b) that determines oven wall abnormalities when the oven width data and oven wall image data obtained in the current extrusion cycle have both changed relative to the oven width data and oven wall image data obtained in past extrusion cycles in such a manner as to exceed established values. A coke oven monitoring system capable of quantitatively monitoring changes in the state of the furnace walls in a coke oven with good accuracy has: an oven width measurement device (6) that measures the oven width; an in-furnace observation device (7) that photographs the oven walls; and a computer (10) that analyzes oven width data measured by the oven width measurement device, and oven wall image data captured by the in-furnace observation device. The computer is characterized by including: a oven width/oven wall image data extraction unit (10a) that extracts width data and oven wall image data in different extrusion cycles for the same location of the same kiln; and an oven width/oven wall image data analysis and processing unit (10b) that determines oven wall abnormalities when the oven width data and oven wall image data obtained in the current extrusion cycle have both changed relative to the oven width data and oven wall image data obtained in past extrusion cycles in such a manner as to exceed established values.