Chlorine Bypass Device Cooling Pipe Design
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Solution Overview
Problem
Conventional chlorine bypass devices in cement manufacturing facilities face issues with coating formation on extraction pipe walls, poor mixability of cooling air and exhaust gas, and limited allowable extraction range, leading to inefficient chloride dust separation and increased chlorine concentration.
Innovation Solution
A chlorine bypass device with a cooling pipe design featuring a revolving portion surrounding the extraction pipe and an introducing portion with a reduced-diameter pipe, where cooling air flows circumferentially and is introduced through a flow inlet around the extraction pipe's circumference, ensuring efficient mixing and preventing coating formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is supplied into the extraction pipe to cool exhaust gas, then chloride gas condenses into chloride dust, but coating adhesion occurs on the inner wall of the extraction pipe
Solution Approach 1:
The cooling pipe is divided into two separate sections: a first cooling pipe that supplies cooling air to the extraction pipe for condensing chloride gas, and a second cooling pipe that supplies cooling air to prevent coating adhesion on the extraction pipe wall. This segmentation allows independent control of cooling functions to resolve the contradiction between condensation efficiency and coating prevention.
Solution Approach 2:
The second cooling pipe acts as an intermediary by introducing cooling air at a specific location to create a protective cooling layer on the extraction pipe inner wall, preventing coating adhesion while allowing the first cooling pipe to perform the primary condensation function.
2Temperature
If cooling air is supplied to cool exhaust gas, then chloride dust is formed, but mixability of cooling air and exhaust gas is poor
Solution Approach 1:
The cooling air is introduced through the first cooling pipe before the exhaust gas enters the extraction pipe, creating a preliminary cooling environment that enhances subsequent mixing efficiency. The reduced-diameter pipe further accelerates this preliminary action by forcing rapid mixing at the introduction point.
Solution Approach 2:
The reduced-diameter pipe changes the flow parameters of cooling air by reducing its cross-sectional area, which increases flow velocity and turbulence. This parameter change enhances the mixability between cooling air and exhaust gas, ensuring thorough contact for efficient chloride dust formation.
3Quantity of substance
If extraction ratio of exhaust gas is increased to remove chlorine, then chlorine concentration decreases, but allowable extraction range is limited
Solution Approach 1:
The system dynamically adjusts the operation of two cooling pipes based on extraction ratio conditions. The control unit activates the second cooling pipe when coating adhesion is detected or predicted, allowing the system to operate beyond traditional extraction limits while maintaining performance and preventing damage.
Solution Approach 2:
The system changes operational parameters by selectively activating different cooling pipes based on real-time conditions. This parameter adjustment expands the allowable extraction range, allowing higher extraction ratios when needed while maintaining system reliability through adaptive cooling control.
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
The device effectively prevents coating adhesion, achieves quick and efficient cooling of exhaust gas, and enhances chloride dust recovery efficiency, even with varying extraction ratios, by ensuring thorough mixing and optimal flow velocities.
Implementation Method 1
cooling means adapted to supply cooling gas for the exhaust gas into the extraction pipe
Implementation Method 2
cool the exhaust gas using the cooling pipe 10, thereby condense chloride gas contained in the exhaust gas into chloride dust
Implementation Method 3
a cyclone 11 adapted to separate and remove cement materials from the exhaust gas in the extraction pipe 9
Implementation Method 4
a bag filter (collector) 12 adapted to collect chloride dust contained in the exhaust gas which has passed through the cyclone 11
Data Source
AI summary
A chlorine bypass device which can cool exhaust gas quickly by mixing extracted exhaust gas with cooling air at high efficiency, to thereby produce fine chloride dust, and increase dust recovery efficiency.