Asymmetric Valve-Pipe Connection for Biomass Blow Line Erosion
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Solution Overview
Problem
Biomass transporting pipes in pretreatment systems experience significant erosion due to uneven distribution of high-velocity particles, leading to frequent repairs and maintenance issues, especially near valves and bends.
Innovation Solution
Asymmetrically connecting the transporting pipe to the valve outlet ensures that the jet stream of biomass material impinges closer to the pipe's central axis, reducing uneven particle distribution and erosion by aligning the pipe axis with the valve axis offset from the center, and using wear-resistant materials in critical areas to mitigate erosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a valve is provided in the transporting pipe to control the flow of biomass material, then the flow can be controlled and pressure drop can be achieved, but particles will be distributed unevenly over the pipe circumference and impinge certain points more, leading to erosion problems
Solution Approach 1:
The transporting pipe is asymmetrically connected to the valve outlet such that the pipe's longitudinal central axis is offset from the valve's longitudinal central axis. This asymmetric arrangement ensures that the jet stream of biomass material impinges closer to the pipe's central axis rather than at the periphery, achieving more uniform particle distribution across the pipe circumference and reducing localized erosion at specific points near the valve
2Ease of manufacture
If the transporting pipe is connected symmetrically to the valve outlet, then the connection is simple and aligned, but particles will impinge certain points of the pipe surface more, leading to erosion problems
Solution Approach 1:
The transporting pipe is asymmetrically connected to the valve outlet such that the pipe's longitudinal central axis is offset from the valve's longitudinal central axis. This asymmetric arrangement ensures that the jet stream of biomass material impinges closer to the pipe's central axis rather than at the periphery, achieving more uniform particle distribution across the pipe circumference and reducing localized erosion at specific points near the valve
3Productivity
If high velocity flow is achieved in the blow line for efficient transport, then productivity is improved, but particles travelling with high speed will cause the blow line to erode
Solution Approach 1:
The asymmetric connection of the transporting pipe to the valve outlet directs the high-velocity jet stream closer to the pipe's central axis, distributing particles more evenly across the pipe circumference. This reduces concentrated impact on specific points while maintaining the high velocity flow needed for efficient biomass transport
Solution Approach 2:
Wear-resistant liners or coatings are applied to specific critical areas of the transporting pipe, particularly near the valve outlet and at bends/elbows/junctions where erosion is most severe. This provides enhanced local protection in high-risk zones while maintaining the overall high-velocity flow for productivity
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
This configuration evenly distributes the flow, reducing erosion risks and extending the lifespan of transporting pipes by minimizing particle impact on specific points, thus requiring less frequent maintenance.
Implementation Method 1
a generated jet stream of biomass material delivered out from the outlet of the valve is received closer to a transporting pipe longitudinal central axis
Implementation Method 2
Particles (biomass, sand or other impurities) which are travelling with high speed in the blow line will cause the blow line to erode
Data Source
AI summary
A system for treatment of a biomass material, said system comprising: a first vessel (3) in which said biomass material is treated under a first pressure; a second vessel (5) in which said biomass material is received and held at a second pressure which is lower than the first pressure; a transporting pipe (7) connecting an outlet (9) of the first vessel (3) with an inlet (11) of the second vessel (5) for transporting the biomass material from the first vessel to the second vessel; and a valve (15; 15′; 15) arranged in said transporting pipe (7), said valve being configured for controlling the flow of biomass material and fluid in the transporting pipe (7), wherein said transporting pipe (7) is asymmetrically connected to an outlet (33′; 33) of said valve (15; 15′; 15) such that a generated jet stream of biomass material delivered out from the outlet (33′; 33) of the valve (15; 15′; 15) is received closer to a transporting pipe longitudinal central axis (A1) than if the outlet (33′; 33) of the valve (15; 15′; 15) and the transporting pipe (7) would have been connected symmetrically.