Jet Mixing for Cyclopentadiene Dimerization
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Solution Overview
Problem
Conventional cyclopentadiene dimerization processes are energy-intensive and inefficient, with high energy consumption due to long residence times and inadequate mixing, leading to limited conversion rates and unwanted side reactions.
Innovation Solution
A method using a jet mixer to inject a C5 hydrocarbon mixture comprising cyclopentadiene into a C5 hydrocarbon liquid in a reactor tank, allowing for efficient mixing and heat dissipation without extra cooling structures, reducing energy consumption and capital expenditure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a tubular reactor is used to provide long residence time for high conversion rate, then the conversion rate of cyclopentadiene is improved, but the reactor length and energy consumption increase significantly
Solution Approach 1:
The patent replaces the conventional tubular reactor configuration with a jet mixing system where high-velocity jet streams create intense turbulence and mixing. This substitution of mechanical mixing architecture enables rapid molecular contact and reaction without requiring long residence times or extended reactor lengths, achieving high conversion rates in a compact vessel.
Solution Approach 2:
The jet mixing system employs periodic pulsing of jet streams to create recurring turbulence cycles. This periodic action continuously regenerates mixing intensity throughout the reactor volume, maintaining high reaction rates without requiring prolonged residence times, thereby achieving high conversion in a compact reactor configuration.
2Productivity
If a tubular reactor with long residence time is used, then the conversion rate is improved, but the energy consumption increases due to extended heating requirements
Solution Approach 1:
The patent replaces the conventional tubular reactor configuration with a jet mixing system where high-velocity jet streams create intense turbulence and mixing. This substitution of mechanical mixing architecture enables rapid molecular contact and reaction without requiring long residence times or extended reactor lengths, achieving high conversion rates in a compact vessel.
Solution Approach 2:
The jet mixing system employs periodic pulsing of jet streams to create recurring turbulence cycles. This periodic action continuously regenerates mixing intensity throughout the reactor volume, maintaining high reaction rates without requiring prolonged residence times, thereby achieving high conversion in a compact reactor configuration.
3Stability of the object's composition
If impellers are used to mix the liquid in the reactor, then mixing is provided, but the energy consumption increases and hot spots are formed
Solution Approach 1:
The patent replaces conventional impeller-based mechanical mixing with a jet mixing system. High-velocity jet streams injected into the reactor create intense turbulence and chaotic flow patterns that achieve superior mixing efficiency. This substitution eliminates the need for energy-intensive impellers while preventing hot spot formation through more uniform heat distribution via turbulent mixing.
4Stability of the object's composition
If impellers are used to mix the liquid, then mixing action is provided, but the mixing is insufficient and hot spots are formed
Solution Approach 1:
The patent replaces conventional impeller-based mechanical mixing with a jet mixing system. High-velocity jet streams injected into the reactor create intense turbulence and chaotic flow patterns that achieve superior mixing efficiency. This substitution eliminates the need for energy-intensive impellers while preventing hot spot formation through more uniform heat distribution via turbulent mixing.
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 significantly reduces energy consumption, improves mixing efficiency, and minimizes side reactions by maintaining uniform temperature distribution, achieving higher conversion rates of cyclopentadiene to dicyclopentadiene while reducing operating costs.
Implementation Method 1
injecting the C5 hydrocarbon mixture stream as a jet stream into C5 hydrocarbon liquid in the tank at a velocity in a range of 1 m/s to 10 m/s... The injecting causes mixing of the C5 hydrocarbon mixture stream and the C5 hydrocarbon liquid
Implementation Method 2
the exothermic heat generated by the dimerization reaction can be quickly dissipated with low energy consumption
Implementation Method 3
the C5 hydrocarbon liquid in the tank can be used as the heat sink medium without need of extra cooling structures
Implementation Method 4
dimerization of cyclopentadiene to form dicyclopentadiene... under reaction conditions sufficient to dimerize the cyclopentadiene to form dicyclopentadiene. The reaction conditions include a reaction temperature of between 40 °C to 130 °C
Implementation Method 5
the exothermic heat generated by the dimerization reaction
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
Systems and methods for producing dicyclopentadiene from cyclopentadiene using reactive jet mixing are disclosed. A C5 hydrocarbon mixture that comprises cyclopentadiene (C5H6) is injected as a jet stream into C5 hydrocarbon liquid in a reactor tank. Under appropriate reaction conditions, cyclopentadiene is dimerized to form dicyclopentadiene.