Biofilter Gas Distribution Modules with Adjustable Slide Gates
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Solution Overview
Problem
Existing biofiltration systems face challenges in achieving even gas distribution through the filtering medium, leading to inefficiencies and potential clogging, as the gas flow distribution cannot be adequately balanced after the modular support structure is erected.
Innovation Solution
A modular support system with a central row of gas distribution modules that can be adjusted using slide gates to control gas flow, ensuring balanced distribution by allowing for post-assembly tuning of air flow rates through the plenum, utilizing a series of contiguous modules with varying slot openings and slide gates that can be clamped or trimmed to optimize flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a modular support structure is erected for biofiltration, then the system can be assembled quickly and adapted to different sizes, but the gas flow distribution becomes uneven and inefficient
Solution Approach 1:
The gas distribution system is segmented into multiple adjustable gas distribution plates positioned at different heights within the modular support structure. Each plate can be independently adjusted to control local gas flow patterns, allowing the system to maintain even distribution across the entire biofilter bed while preserving modular assembly advantages.
Solution Approach 2:
The gas distribution plates are designed with adjustable positions and configurations that can be dynamically modified after assembly. This dynamic adjustability enables optimization of gas flow distribution uniformity without requiring complete disassembly or reconfiguration of the modular support structure.
2Productivity
If gas flow is increased to improve treatment capacity, then productivity increases, but the filter bed becomes prone to clogging
Solution Approach 1:
The gas distribution system incorporates adjustable plates that enable dynamic control of gas flow velocity and distribution patterns. By optimizing flow parameters through adjustment, the system can maintain high treatment capacity while preventing conditions that lead to clogging, thus improving reliability.
Solution Approach 2:
Different regions of the gas distribution system can be locally optimized with specific plate configurations and positions tailored to local flow requirements. This ensures uniform gas velocity distribution across the biofilter bed, preventing localized high-velocity zones that could cause clogging while maintaining overall high productivity.
3Area of stationary object
If multiple level biofilters are constructed to save area, then space utilization improves, but gas flow distribution control becomes more difficult
Solution Approach 1:
The gas distribution system in multi-level biofilters is segmented into separate controllable sections for each level, with independent gas distribution plates. This segmentation allows each level to be controlled independently, simplifying the overall flow distribution control despite the complex multi-level configuration and reducing the footprint area.
4Productivity
If the biofilter bed height is increased to handle higher flow rates, then treatment capacity increases, but gas flow distribution becomes more uneven
Solution Approach 1:
The gas distribution system uses multiple gas distribution plates positioned at different heights within the increased bed height. Each plate serves a specific vertical zone, segmenting the flow control function to maintain uniform distribution even as the overall bed height increases to accommodate higher flow rates.
Solution Approach 2:
The solution addresses the vertical dimension challenge by introducing multiple horizontal distribution plates at different elevations. This transforms the single-plane distribution problem into a multi-plane system, maintaining flow uniformity across the entire height of the expanded biofilter bed.
Data Source
AI summary
A modular support system for a bed of organic filter medium has provision for adjusting the distribution of gases in the plenum defined below the filter bed platform. Once the filter bed platform has been fully erected, with a gas inlet below the platform, slide gates are positioned in special modules which define a gas distribution channel, preferably extending in a series to form a line in the assembled support platform. The slide gates, one at each side of the special flow distribution modules, are adjusted as to the depth of penetration down into the plenum, so as to close the sides of the flow distribution channel to varying degrees along the length of the channel, effective to balance the flow of gases up through the perforations in the platform modules. The proper gate setting can be determined empirically after erection of the filter bed platform, by flowing gas through the platform and checking the distribution of gas exiting the holes in the modules. The gate settings can be adjusted until optimum balance of flow is achieved throughout the area of the platform.