Coke Dry Quenching Small Flue Arrangement
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Solution Overview
Problem
Conventional coke dry quenching equipment experiences inefficiencies due to coke accumulation and clogging in small flues, limiting cooling gas flow and requiring frequent equipment shutdowns, which hinders size reduction and cooling efficiency.
Innovation Solution
The equipment design positions the lower edges of small flues closer to the furnace core than the side wall of the cooling chamber, with a conical portion and suspended small blast heads, facilitating the downward flow of coke and preventing its entry into the flues, while controlling residence time and using inclined back surfaces and partition plates to enhance flow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lower ends of small flues are disposed closer to the furnace core, then coke flow into the small flues is suppressed, but the cooling gas flow volume is limited
Solution Approach 1:
The invention changes the spatial arrangement by positioning small flues radially outward from the central axis rather than vertically aligned, and disposes their lower ends closer to the furnace core horizontally rather than vertically. This dimensional repositioning allows cooling gas to flow through small flues without coke interference while maintaining adequate flow volume.
Solution Approach 2:
The invention applies different functional zones within the cooling chamber: the central region handles main coke descent, while the peripheral region with small flues handles cooling gas discharge. By localizing the small flue function to the peripheral zone with specific radial positioning, coke flow is suppressed at the flue inlets while cooling gas flow volume is maintained through optimized local geometry.
2Productivity
If conventional cooling gas supply devices are used, then cooling function is provided, but coke accumulates in small flues causing operational shutdowns
Solution Approach 1:
The cooling gas supply function is segmented into multiple independent sources: a main blast head at the center and multiple small blast heads at peripheral positions. Each blast head independently supplies cooling gas to different zones, preventing coke accumulation at any single location and enabling continuous operation without shutdowns for flue clearing.
Solution Approach 2:
The invention introduces an intermediary structural arrangement where small flues are positioned radially outward with their lower ends closer to the furnace core, creating an intermediate zone between the central coke descent path and the peripheral chamber wall. This intermediary positioning prevents direct coke entry into small flues while maintaining cooling efficiency.
3Volume of stationary object
If the equipment size is reduced, then space efficiency is improved, but cooling gas flow volume is insufficient
Solution Approach 1:
The invention maximizes cooling gas flow volume within reduced equipment size by utilizing radial space distribution. Small flues are arranged radially around the central axis with optimized angular spacing, effectively using the circumferential dimension to increase total cooling gas capacity without increasing the vertical or radial footprint of the equipment.
Solution Approach 2:
The invention optimizes geometric parameters of the small flues including their radial position, angular spacing, and lower end elevation closer to the furnace core. These parameter optimizations enhance cooling gas flow velocity and distribution efficiency, achieving adequate cooling capacity in a more compact equipment configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration significantly suppresses coke flow into the small flues, allowing for increased cooling gas flow, improved cooling efficiency, and reduced equipment size by ensuring stable operation and uniform coke descent.
Implementation Method 1
the coke 6 descending inside the chambers is cooled by heat exchange with the cooling gas from the lower portion of the chamber that includes the blast head 4
Implementation Method 2
a conical portion is formed in the lower portion of the cooling chamber, at least one small blast head having a diameter less than a diameter of the main blast head is suspended from a lower portion of the supporting member
Data Source
AI summary
In coke dry quenching equipment, the accumulation of coke in small flues for discharging a cooling gas or the clogging of the small flues with the coke is suppressed. The coke dry quenching equipment includes: a pre-chamber; a cooling chamber that follows a lower part of the pre-chamber; cooling gas supply device for supplying the cooling gas to the cooling chamber; and a plurality of divided small flues for discharging the cooling gas, the plurality of divided small flues being disposed in a circumference of the pre-chamber. High temperature coke is charged from the upper portion of the pre-chamber. The coke is cooled by the cooling gas, and the cooled coke is discharged from a discharge hole provided in the lower portion of the cooling chamber. In the coke dry quenching equipment, a main blast head is placed on the upper portion of a supporting member disposed in a lower part of the cooling chamber, and at least one small blast head having a diameter less than the diameter of the main blast head is suspended from the lower portion of the supporting member. The lower edges of the small flues are disposed closer to a furnace core than the side wall surface of the cooling chamber and are positioned between the side wall surface of the cooling chamber and then outer circumferential edge of the main blast head.