Removable Flame Shield Structure for Corrosion-Prone Fire Tubes
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Solution Overview
Problem
Fire tubes in heater treaters corrode quickly due to direct flame impingement, leading to premature failure, costly replacements, and safety hazards, necessitating a solution to extend their lifespan and reduce corrosion.
Innovation Solution
A direct flame impingement shield comprising a barrier tube with a flared end, tapered end, cross member, and leveling member, made from corrosion-resistant materials like stainless steel, is removably coupled to the fire tube to protect it from direct flame exposure and improve heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fire tube is used in a heater treater with direct flame impingement, then heating function is achieved, but corrosion occurs quickly leading to premature failure
Solution Approach 1:
A radiant heat tube is introduced as an intermediary component between the open flame and the fire tube. The radiant heat tube absorbs direct flame impingement and radiates heat uniformly to the fire tube, preventing direct corrosive contact while maintaining heating functionality. This mediator resolves the contradiction by decoupling the heating function from the corrosive effect.
Solution Approach 2:
The radiant heat tube is constructed from corrosion-resistant materials such as stainless steel or alloy 625, creating a composite structure that combines heat absorption, heat radiation, and corrosion resistance properties. This material selection enables the tube to withstand direct flame exposure while protecting the underlying fire tube from corrosion.
2Reliability
If fire tubes are replaced when corroded, then safety is maintained, but production time is lost and costs increase
Solution Approach 1:
The radiant heat tube is installed on the fire tube before corrosion occurs, serving as preventive protection. This preliminary action extends the service life of the fire tube significantly, delaying the need for replacement and reducing production downtime while maintaining safety standards.
Solution Approach 2:
The radiant heat tube acts as a protective cushion between the corrosive flame environment and the fire tube. By absorbing the corrosive impact beforehand, it prevents rapid degradation and extends the operational lifespan of the fire tube, reducing replacement frequency.
3Use of energy by moving object
If direct flame impingement is used on fire tube, then heating efficiency is achieved, but heat distribution is uneven and corrosion accelerates
Solution Approach 1:
The radiant heat tube serves as a heat redistribution intermediary, absorbing concentrated direct flame heat and radiating it uniformly across the fire tube surface. This maintains heating efficiency while achieving uniform heat distribution and preventing localized hot spots that cause corrosion.
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 shield significantly reduces corrosion and extends the life of fire tubes, minimizing replacement costs and safety risks while enhancing heat distribution by evenly radiating heat across the tube's surface.
Implementation Method 1
protect the tube and improve heat distribution by creating a radiant heat tube
Data Source
AI summary
Described are direct flame impingement shields for fire tubes in heater treaters which reduce corrosion of the fire tubes. The direct flame impingement shield is removable and replaceable. The direct flame impingement shield may be formed from a variety of types of stainless steel or other corrosion resistant material.