Injection Lance Collar for Nozzle Deposit Prevention
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Solution Overview
Problem
Existing gas treatment systems face issues with nozzle clogging and contamination due to the high-speed injection of additional components into gas streams, leading to inefficient distribution and potential deposits on the injection lance and nozzle units, which impede the treatment process.
Innovation Solution
A collar is designed to surround the nozzle opening, shielding it from the gas stream and reducing the negative pressure that attracts gas flow components, allowing the additional component to exit at a slower speed and preventing deposits, while maintaining high exit velocity for effective atomization and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the additional component is injected at high speed into the gas stream, then the distribution efficiency is improved, but deposits form on the nozzle unit and injection lance
Solution Approach 1:
A collar is introduced as an intermediary component between the nozzle opening and the gas stream. The collar serves as a protective barrier that prevents direct contact between the high-speed injected additional component and the nozzle unit, thereby preventing deposits while maintaining injection efficiency
Solution Approach 2:
The collar provides preliminary protection against deposit formation by creating a shielded zone around the nozzle opening. This preliminary anti-action prevents the harmful effect (deposits) before it can occur, allowing continuous high-speed injection without clogging
2Reliability
If the collar shields the nozzle opening, then deposits are prevented, but the exit velocity of the additional component is reduced
Solution Approach 1:
The collar is designed with differentiated zones: a first region that provides shielding to prevent deposits, and a second region that allows high-speed exit of the additional component. This local quality differentiation enables simultaneous achievement of deposit prevention and maintained exit velocity
Solution Approach 2:
The collar is segmented into functional regions with different properties. The first region (shielding portion) protects the nozzle, while the second region (exit portion) maintains open flow for high velocity, allowing both contradictory requirements to be satisfied in different parts of the same component
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 collar effectively prevents deposits on the nozzle unit, ensuring prolonged operation of injection lances and maintaining efficient distribution of additional components within the gas stream, enhancing the overall gas treatment process.
Implementation Method 1
reducing the negative pressure that attracts gas flow components
Implementation Method 2
maintaining high exit velocity for effective atomization and distribution
Data Source
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AI summary
Described and illustrated is an injection lance (5) for injecting at least one additive component (6) into at least one gas stream (2), comprising at least one nozzle unit (19) for injecting the at least one additive component (6) into the at least one gas stream (2) via at least one nozzle opening (27) and at least one feed unit (20) for feeding the at least one additive component (6) to the at least one nozzle unit (19). In order to enable the injection lances to be operated without malfunctions over a longer period of time, it is proposed that at least one collar (29) surrounding the at least one nozzle opening (27) and extending in the injection direction of the additive component (6) be provided.