Transport Screw Housing Cleaning Channels for Precipitation Buildup
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Solution Overview
Problem
Precipitation buildup in pre-hydrolysis pressure vessel systems causes friction and affects material transport efficiency, with loose pieces posing downstream issues.
Innovation Solution
A pre-hydrolysis pressure vessel system with a cleaning arrangement featuring elongated fluid channels and outlets along the inner wall, allowing cleaning fluid to be distributed through multiple points within the housing, effectively flushing off precipitation before it adheres strongly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate fluid connections are provided to each fluid outlet for cleaning, then cleaning coverage is improved, but device complexity increases
Solution Approach 1:
The enclosing housing is divided into multiple cleaning sections along its length, with each section having its own fluid channel and fluid outlets. This segmentation allows cleaning fluid to be distributed to multiple locations simultaneously through a single fluid inlet per section, reducing the overall number of external fluid connections needed while maintaining comprehensive cleaning coverage
Solution Approach 2:
Elongated fluid channels act as intermediaries that receive cleaning fluid through fluid inlets and distribute it along the length of the enclosing housing to multiple fluid outlets. These channels serve as the mediating structure that enables one fluid connection to serve multiple cleaning points, thereby reducing complexity while improving coverage
2Reliability
If cleaning is performed after precipitation hardens, then cleaning effectiveness decreases, but system interruption time increases
Solution Approach 1:
The cleaning system is designed to detect precipitation buildup and initiate cleaning while the precipitation is still soft and removable. By performing cleaning at this preliminary stage before the precipitation hardens and adheres strongly, the system maintains high cleaning effectiveness while minimizing the time the system needs to be interrupted
Solution Approach 2:
The system incorporates monitoring that provides feedback on precipitation buildup, enabling the control system to initiate cleaning operations at the optimal moment when precipitation is still soft. This feedback mechanism ensures cleaning is performed at the right time to maximize effectiveness while minimizing system interruption
3Reliability
If cleaning fluid is provided at single position, then construction simplicity is maintained, but cleaning coverage is insufficient
Solution Approach 1:
Instead of providing cleaning fluid at a single position, the system uses elongated fluid channels that extend along the length of the enclosing housing, distributing fluid outlets in multiple positions. This dimensional extension from a single point to a distributed linear arrangement improves cleaning coverage without requiring proportional increases in external fluid connections
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 system efficiently removes precipitation while minimizing disruption to material transport, improving construction and handling efficiency by reducing the need for multiple fluid connections and optimizing cleaning fluid distribution.
Implementation Method 1
a cleaning fluid can be provided into the enclosing housing from outside the enclosing housing, via the cleaning fluid inlet and through the at least one fluid channel and said fluid outlets for cleaning the transport screw and/or the inner wall of the enclosing housing
Implementation Method 2
Hereby a cleaning fluid can be provided inside the enclosing housing at different positions along a length of the enclosing housing without the need to provide separate fluid connections from outside the enclosing housing to each of the fluid outlets
Data Source
AI summary
A pre-hydrolysis pressure vessel system includes; a material inlet for receiving biomass material to be treated in the pre-hydrolysis pressure vessel system and a material outlet for expelling treated biomass material out from the pre-hydrolysis pressure vessel system; a transport screw arrangement including a transport screw provided inside an enclosing housing of the transport screw arrangement, said transport screw being configured for transporting biomass material through the enclosing housing towards the material outlet of the pre-hydrolysis pressure vessel system. The enclosing housing includes a cleaning arrangement that includes: at least one elongated fluid channel positioned in connection with an inner wall of the enclosing housing and wherein said at least one elongated fluid channel comprises a number of fluid outlets, and at least one cleaning fluid inlet which is provided through the enclosing housing in fluid connection with the at least one fluid channel.