Parallel Reactor Flow Control via Adjustable Capillary Resistance
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Solution Overview
Problem
Existing apparatuses for analyzing reactions with multiple parallel reactors lack precise control over starting material flow and pressure, requiring frequent calibration and being unsuitable for high temperatures due to limitations in flow resistance adjustment and temperature-dependent viscosity considerations.
Innovation Solution
Incorporating a pressure regulator and restrictor in each connecting conduit between the starting material distributor and reactors, allowing for independent setting of pressure differences and precise flow regulation without permanent calibration, suitable for high temperatures and various fluid types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If restrictors (capillaries, microchannels, orifice plates) are used to distribute starting material streams uniformly over reactors, then flow distribution uniformity is improved, but flow resistance setting precision deteriorates due to manufacturing geometry variations and inability to adjust flow resistance
Solution Approach 1:
The patent applies dynamics by making the flow resistance adjustable through temperature control of the capillaries. The heating system allows the capillary dimensions and flow resistance to be dynamically changed, enabling precise setting of starting material flows to individual reactors without being constrained by fixed manufacturing geometries
Solution Approach 2:
The patent changes physical parameters by heating the capillaries to alter their dimensions and flow resistance. This parameter change approach allows continuous adjustment of flow rates by modifying temperature, thereby achieving precise flow distribution control that overcomes manufacturing precision limitations
2Adaptability or versatility
If capillaries are heated to vary flow resistance for adjusting starting material flows, then flow adjustability is improved, but device complexity and calibration requirements worsen due to complicated switching technology and regular calibration needs
Solution Approach 1:
The heating system serves multiple functions: it controls flow resistance for flow rate adjustment, maintains capillary structural integrity at operating temperatures, and provides a continuous adjustment range without requiring discrete switching elements. This multi-functionality reduces overall device complexity despite the added thermal control capability
3Ease of operation
If temperature of capillaries is changed to regulate individual flow, then flow control capability is improved, but measurement and control difficulty worsens due to limited measurement capability at high temperatures and need for empirical adaptation
Solution Approach 1:
The patent uses temperature as an intermediary parameter to control flow rate indirectly. Rather than attempting to measure and control flow directly at high temperatures, the system controls the capillary temperature which in turn controls the flow resistance and flow rate, bypassing the measurement difficulty at high temperatures
4Adaptability or versatility
If operation temperature of capillaries is increased to adjust flow, then flow control range is improved, but system reliability deteriorates due to accelerated deposit formation and increased flow resistance leading to premature failure
Solution Approach 1:
The system dynamically adjusts capillary temperature to achieve desired flow rates without permanently operating at high temperatures that cause deposits. The ability to lower temperatures when high flow control range is not needed prevents accelerated deposit formation and maintains system reliability while retaining extended control range when required
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
Enables precise and rapid adjustment of fluid flows, expanding the control range beyond temperature-dependent limitations, and maintaining accuracy across different reactor conditions, including high temperatures.
Implementation Method 1
a pressure regulator and a restrictor are installed in each connecting conduit between the starting material distributor and the reactors in order to set the volume flow of the starting material streams to the reactors arranged in parallel by setting the pressure difference across the restrictor
Implementation Method 2
restrictors by means of which the flow resistance is increased are used. Examples of restrictors are capillaries, microchannels and orifice plates in a channel
Implementation Method 3
the capillaries can be heated in order to be able to vary the flow resistance. However, these thermally adjustable restrictors have the disadvantage that they have to be calibrated regularly
Data Source
AI summary
The invention proceeds from an apparatus for analyzing reactions, comprising a starting material distributor and at least two reactors which are connected in parallel and are each connected via a connecting conduit to an outlet of the starting material distributor. To set the inflow, a pressure regulator and a restrictor are installed in each connecting conduit between the starting material distributor and the reactors or an outlet conduit in which a restrictor and a pressure regulator are installed branches off from each connecting conduit. The invention further relates to a method for analyzing reactions in such an apparatus.