Suction Lance for SCR Particulate Removal
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Solution Overview
Problem
Existing methods for cleaning particulates from SCR systems and convection sections of refinery and power generation systems are inefficient, as they either allow particulates to be exhausted into the atmosphere or damage the components during cleaning, reducing the effectiveness and longevity of catalysts and heat transfer efficiency.
Innovation Solution
A portable apparatus with a tubular lance and suction generator, including a venturi device or vacuum pump, is used to remove particulates from components while operational, utilizing a flexible hose and filter assembly to collect and clean the particulates without damaging the components, allowing for on-line cleaning and preventing atmospheric pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sonic horn or blasting methods are used to clean particulates, then particulates can be dislodged from the component, but the particles may become lodged in catalyst channels or fall to the bottom of the unit, and the cleaning process cannot be performed on-line
Solution Approach 1:
The invention uses a suction generator (vacuum system) to create negative pressure that draws particulates from the component surface through a flexible hose into a collection container. This pneumatic approach allows on-line cleaning while effectively capturing particles before they can be exhausted into the atmosphere or damage other components.
2Object-generated harmful factors
If blasting with dry ice is used to clean particulates, then particles can be dislodged, but the method cannot be performed on-line and particles may be exhausted into the atmosphere
Solution Approach 1:
The invention introduces a flexible hose as an intermediary channel that connects the suction nozzle to a collection container. This intermediary allows particulates to be transported from the component surface through the hose into the container, preventing direct exhaustion into the atmosphere while enabling on-line operation.
Solution Approach 2:
The invention recovers particulates by collecting them in a sealed container rather than allowing them to be discarded into the atmosphere. The suction system captures particles at the source and stores them in the collection container, eliminating atmospheric pollution while maintaining on-line cleaning capability.
3Reliability
If conventional cleaning methods are used, then particulates can be removed, but the components may be damaged during cleaning
Solution Approach 1:
The invention replaces mechanical cleaning methods (sonic horns, blasting) with a pneumatic suction system. Instead of applying mechanical force that could damage the component, the vacuum suction gently draws particulates away from the surface through the flexible hose, maintaining component integrity while achieving effective cleaning.
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 apparatus effectively removes particulates from operational systems, maintaining component effectiveness and preventing pollution by using a suction-based system that minimizes damage and ensures particulate-free exhaust, thus enhancing the longevity and performance of SCR systems and heat transfer units.
Implementation Method 1
a suction generator operatively connected to a proximal end of the lance to generate a suction at the nozzle
Implementation Method 2
The suction generator may be a static venturi device having inlet and outlet ends for passage therethrough of a flow of pressurized fluid
Data Source
AI summary
Apparatus and methods are provided whereby a component can be cleaned while the furnace is operational. Additionally, particulates that have accumulated on the component can be collected and retained. The apparatus may include a portable frame, a tubular lance supported by the frame and having a nozzle at a distal end thereof, and a suction generator operatively connected to a proximal end of the lance to generate a suction at the nozzle. Manipulation of the lance to move the nozzle across a component allows accumulated particulates to be removed therefrom through the lance.