Burner Inlet Assembly Nozzle Bore Scraper for Deposit Removal
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Solution Overview
Problem
Existing burner inlet assemblies face clogging issues due to deposits from condensable compounds like Ammonium hexafluorosilicate and Aluminium Chloride in effluent gas streams, which impede gas flow and affect combustion chemistry, especially with sudden changes in nozzle direction.
Innovation Solution
An inlet assembly with a coaxially aligned manifold and a reciprocating nozzle bore scraper within a straight, cylindrical nozzle bore, facilitated by an actuator, to scrape and remove deposits and maintain unidirectional gas flow, reducing the likelihood of clogging and ensuring reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the effluent gas flow rate and range of compounds are increased, then the processing capacity is improved, but the likelihood of deposit formation and clogging in the nozzle bore increases
Solution Approach 1:
The scraper is positioned to contact the nozzle bore surface before deposits can significantly accumulate and cause clogging. The system performs preliminary cleaning action continuously or periodically to prevent deposit buildup that would otherwise occur at higher flow rates and compound concentrations.
Solution Approach 2:
The scraper mechanism is designed to automatically clean the nozzle bore without external intervention. The reciprocating motion of the scraper against the nozzle bore surface enables self-cleaning, maintaining system reliability even when processing capacity is increased and deposit formation is accelerated.
2Adaptability or versatility
If a non-linear nozzle bore is used to change flow direction, then adaptability is improved, but sudden changes in flow direction increase deposit formation
Solution Approach 1:
The scraper removes deposits from the nozzle bore surface before they can be deposited by sudden flow direction changes. This preliminary cleaning action counteracts the harmful effect of flow direction changes on deposit formation.
Solution Approach 2:
The scraper operates continuously or periodically to maintain a clean nozzle bore surface throughout operation. This continuous cleaning action ensures that even when flow direction changes cause temporary increase in deposit formation, the deposits are promptly removed, maintaining overall system performance.
3Productivity
If a reciprocating scraper mechanism is added, then device complexity increases, but processing downtime is reduced through continuous deposit removal
Solution Approach 1:
The reciprocating scraper provides continuous or periodic cleaning action during operation, ensuring deposits are removed before they can accumulate to problematic levels. This continuous maintenance of flow paths eliminates the need for shutdowns for manual cleaning, maintaining processing continuity.
Solution Approach 2:
The scraper mechanism automatically maintains the nozzle bore cleanliness without external intervention or system shutdown. The self-service cleaning capability reduces processing downtime by preventing deposit-related failures while the added complexity is confined to the scraping mechanism itself.
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 solution effectively prevents clogging and maintains efficient gas flow into the combustion chamber, improving burner reliability and reducing processing downtime by continuously removing deposits and maintaining consistent combustion chemistry.
Implementation Method 1
a nozzle bore scraper reciprocating within the nozzle bore along the longitudinal axis between a rest position and an actuated position to reduce effluent gas deposits within the nozzle bore
Data Source
AI summary
An inlet assembly for a burner includes a manifold having an inlet aperture and a coaxially aligned outlet aperture, the manifold having a nozzle bore extending along a longitudinal axis between the inlet aperture and the outlet aperture for conveying an effluent gas from an inlet pipe coupleable with the inlet aperture to the outlet aperture for delivery to a combustion chamber of the burner. A nozzle bore scraper is housed within the nozzle bore. An actuator is operable to reciprocate the nozzle bore scraper relative to the nozzle bore, the nozzle bore scraper reciprocating along the longitudinal axis within the nozzle bore between a rest position and an actuated position to reduce effluent gas deposits within the nozzle bore.