Two-Chamber RNV Adsorbent Recirculation for Concentration Peak Control
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Solution Overview
Problem
Existing methods for cleaning raw gas volume flows with low concentrations of oxidizable components are inefficient due to high investment costs for RNV systems, particularly in three-chamber systems, which result in concentration peaks of oxidizable components in clean gas, leading to suboptimal economic operation and environmental concerns.
Innovation Solution
Implementing a method where the gas volume flow accidentally entering the clean gas duct during flow direction reversal is recirculated back to the adsorbent, preventing the release of contaminated gas into the environment and maintaining continuous loading of the adsorbent and RNV system, while using a two-chamber system to reduce costs and avoid concentration peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a three-chamber RNV system is used to treat raw gas with low oxidizable component concentration, then cleaning performance is improved, but investment costs and device complexity increase significantly
Solution Approach 1:
The system is divided into two functional chambers: a first chamber for adsorption of oxidizable components and a second chamber for catalytic oxidation. This segmentation allows each chamber to perform its specific function efficiently while reducing overall system complexity compared to three-chamber designs.
Solution Approach 2:
The system employs periodic switching of flow directions between the two chambers. During one half-cycle, the first chamber adsorbs oxidizable components while the second chamber oxidizes previously adsorbed components. During the next half-cycle, the roles are reversed. This periodic operation maintains continuous treatment effectiveness with simpler hardware.
2Productivity
If flow direction is reversed in a two-chamber system, then continuous operation is maintained, but concentration peaks of oxidizable components occur in clean gas
Solution Approach 1:
Before flow direction reversal occurs, the system ensures that one chamber is fully loaded with oxidizable components while the other chamber completes its oxidation cycle. This preliminary preparation prevents concentration peaks by ensuring that the chamber receiving flow has sufficient oxidizable components already adsorbed, eliminating the need for sudden concentration releases during switching.
Solution Approach 2:
The adsorbent material acts as an intermediary that buffers the transition between chambers. During flow reversal, the adsorbent in the receiving chamber provides a reservoir of oxidizable components that gradually releases them through controlled desorption and oxidation, preventing sharp concentration peaks in the effluent gas.
3Productivity
If adsorbent loading is increased to improve treatment capacity, then oxidizable component removal efficiency increases, but maximum loading capacity is exceeded causing performance degradation
Solution Approach 1:
The system operates in periodic cycles where the first chamber adsorbs oxidizable components until approaching its loading capacity, then flow direction is switched to allow the second chamber to oxidize previously adsorbed components while the first chamber begins a new adsorption cycle. This periodic operation maintains the adsorbent loading within optimal ranges, preventing both underutilization and overload conditions.
Solution Approach 2:
While one chamber is adsorbing oxidizable components, the other chamber simultaneously performs catalytic oxidation of previously adsorbed components. This continuous alternating operation ensures that treatment capacity is maximized at all times without any chamber remaining idle or becoming overloaded, maintaining stable performance throughout operation.
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 approach maintains high cleaning performance comparable to three-chamber systems without concentration peaks, allowing for continuous operation and efficient treatment of raw gas volume flows, reducing investment costs and environmental impact.
Implementation Method 1
oxidizable components of the first raw gas volume flow attaching themselves to the adsorbent
Implementation Method 2
oxidizable components deposited on the adsorbent being desorbed from the adsorbent by means of a desorption volume flow
Implementation Method 3
the second raw gas volume flow being passed through a first heat storage mass, whereby a temperature of the second raw gas volume flow is increased
Implementation Method 4
the oxidizable components in the second raw gas volume flow being oxidized
Implementation Method 5
the second raw gas volume flow being passed into a reaction chamber in which the oxidizable stock contained in the second raw gas volume flow parts are oxidized
Implementation Method 6
the second clean gas volume flow then being passed at least partially through a second heat storage mass, as a result of which a temperature of the portion of the second clean gas volume flow passed through the second heat storage mass is reduced
Data Source
AI summary
The present invention relates to a method and apparatus for purifying the raw gas volume flow containing oxidizable component, wherein the surface of the guide along a first adsorbent raw gas volume flow, the second purge gas does not flow through the first accumulator volume block, the second purge gas volume flow and at least proportionally through the second heat storage block, and the second purge gas is introduced into the purified gas volume flow conduit, wherein the first heat storage block, the reaction chamber and the second reservoir the flow direction of the heat block is periodically reversed. Compared to the three-chamber system, at least in terms of having the same high removal efficiency and low cost while, at least for a recommendation sorbent flow direction is reversed during the process as an intermediate reservoir and a large number of oxidizable ingredients to be used, at least some of them after a higher load level associated with an adsorbent mass of adsorbent having oxidizable component in the adsorbent as an intermediate reservoir than without using an intermediate reservoir adsorbent as the maximum load level.