Coke Oven Loading Frame with Pressure Relief Ducts
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Solution Overview
Problem
Existing devices for preventing filling gas emissions during coke oven chamber loading are inadequate, as they either fail to completely prevent gas discharge or cause damage to the rammed cake, leading to inefficient gas capture and environmental pollution.
Innovation Solution
A device comprising a frame with pressure relief ducts and a box profile that seals the loading opening, creating a gap between the frame and the rammed cake to direct gases into suction holes without mechanical contact, using passive pressure relief channels and a suction system to collect gases efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If sealing elements are pressed against the rammed cake to seal the loading opening, then filling gas emissions are prevented, but the rammed cake is damaged and mechanical contact is required
Solution Approach 1:
The patent introduces a frame as an intermediary structure positioned at the loading opening. This frame creates a sealing arrangement that prevents filling gas emissions without requiring direct mechanical contact with the rammed cake. The frame acts as a mediator between the sealing requirement and the cake protection requirement, allowing gas prevention while maintaining cake integrity.
Solution Approach 2:
The patent replaces the mechanical contact-based sealing system with a pressure differential-based system. Instead of using sealing elements that physically press against the cake, the invention uses pressure relief ducts and suction devices to create negative pressure, drawing filling gases into the gas collection space without mechanical contact with the rammed cake.
2Object-generated harmful factors
If high suction power is used to prevent filling gas discharge through the loading opening, then gas capture is improved, but false air entry occurs causing undesirable cooling of the coke oven chamber
Solution Approach 1:
The patent applies local quality by creating localized suction at the loading opening through pressure relief ducts positioned specifically at this location. Instead of applying high suction power throughout the entire gas collection space, the suction is concentrated locally where filling gases escape, preventing emissions without causing excessive false air entry that would cool the chamber.
Solution Approach 2:
The patent segments the gas collection function by separating the loading opening sealing function from the general gas collection function. The frame with pressure relief ducts handles the local sealing at the loading opening, while the main suction system continues to operate at normal power for general gas capture, avoiding the temperature drop caused by excessive suction.
3Object-generated harmful factors
If sealing elements are pressed against the rammed cake, then gas sealing is achieved, but mechanical contact increases sloppy coal waste that must be collected and returned
Solution Approach 1:
The patent replaces the mechanical contact-based sealing approach with a pressure differential-based sealing system. The frame with pressure relief ducts creates negative pressure to prevent filling gas emissions, eliminating the need for sealing elements that physically contact and damage the rammed cake, thereby reducing sloppy coal waste generation.
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
Effectively prevents filling gas emissions at the loading opening without damaging the rammed cake, allowing for flexible use in various coke ovens while capturing valuable raw materials and reducing health and environmental hazards.
Implementation Method 1
creating a negative pressure in pressure relief passages formed on a frame of a loading port of the coke oven chamber
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a device for suctioning and transferring filling gases from a gas collection chamber (24) of a coke oven chamber (2), the device comprising at least one suction hole (25), which is arranged on the gas collection chamber (24) and via which the filling gases can be suctioned from the gas collection chamber (24), and comprising a frame (1) for arranging at a loading opening (21) of the coke oven chamber (2), wherein the frame (1) forms pressure relief channels (12), and wherein the pressure relief channels (12) are fluidically connected to the at least one suction hole (25). The invention further relates to a method for preventing filling emissions during the setting of a stamped cake (3) into a coke oven chamber (2).