Ionic Liquid Alkylation Reactor Pneumatic Agitation Heat Removal
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Solution Overview
Problem
Current systems for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, face challenges in effectively managing reaction heat and achieving efficient mixing without moving parts, limiting their operational efficiency and product quality.
Innovation Solution
The system incorporates an ionic liquid reactor with a hydrocarbon vapor outlet for vaporization to remove reaction heat and a hydrocarbon vapor recovery unit for condensing and recycling the vapor, creating a pneumatically agitated environment that mixes the ionic liquid catalyst and hydrocarbon reactants efficiently, eliminating the need for moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems are used to remove reaction heat, then temperature control is achieved, but device complexity and loss of energy increase
Solution Approach 1:
The reaction heat is utilized to vaporize hydrocarbon feedstock, and the resulting vapor is then condensed to provide cooling. The system serves itself by using the heat generated in the reaction to drive the vaporization-condensation cycle that simultaneously removes excess heat and provides mixing, eliminating the need for external cooling systems.
Solution Approach 2:
The patent employs phase transitions of hydrocarbon (liquid to vapor during vaporization, vapor to liquid during condensation) to achieve both heat removal and mixing functions. The vaporization absorbs reaction heat, and the condensation releases heat while providing cooling effect, creating a self-regulating thermal management system.
2Stability of the object's composition
If mechanical stirrers are used to achieve mixing, then mixing efficiency is improved, but device complexity and loss of substance increase due to seals and moving parts
Solution Approach 1:
The patent replaces mechanical stirring systems with a pneumatic agitation system where vapor bubbles rising through the liquid phase create turbulence and mixing. This substitution eliminates mechanical moving parts, seals, and associated complexity while achieving effective mixing through the physical action of vapor bubbles.
Solution Approach 2:
The system uses pneumatic agitation where hydrocarbon vapor bubbles rise through the liquid reaction mixture, creating turbulence and enhancing mixing. The gas phase (vapor) is used to agitate the liquid phase, providing mixing without mechanical components.
3Temperature
If vaporization is used to remove reaction heat, then temperature control is improved, but loss of substance occurs due to vapor withdrawal
Solution Approach 1:
The patent recovers the hydrocarbon vapor that is withdrawn from the reactor by condensing it back to liquid form and returning it to the reactor feed. This recovery process prevents loss of valuable hydrocarbon material while maintaining the vaporization-condensation cycle for heat removal.
Solution Approach 2:
The system implements a feedback loop where withdrawn vapor is condensed and the condensed liquid is returned to the reactor feed. This closed-loop approach ensures that materials are not lost but continuously recycled, maintaining mass balance while achieving thermal management.
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 enhances the surface area of the ionic liquid catalyst, promotes high-quality product formation, and maintains efficient mixing and circulation within the reactor, thereby improving the overall efficiency and product yield of hydrocarbon conversion reactions.
Implementation Method 1
wherein the ionic liquid reactor comprises at least one hydrocarbon vaporization zone located within the ionic liquid reactor
Implementation Method 2
an ionic liquid reactor configured for performing an ionic liquid catalyzed exothermic hydrocarbon conversion reaction
Implementation Method 3
a hydrocarbon vapor recovery unit in fluid communication with the hydrocarbon vapor outlet, wherein the hydrocarbon vapor recovery unit is configured for receiving hydrocarbon vapor withdrawn from the ionic liquid reactor and for condensing the withdrawn hydrocarbon vapor
Implementation Method 4
via the bubbles of hydrocarbon vapor, pneumatically agitating the liquid reaction medium in the ionic liquid alkylation zone
Data Source
AI summary
Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, using vaporization to remove reaction heat from an ionic liquid reactor and to provide mixing therein, wherein hydrocarbon vapors are withdrawn from the ionic liquid reactor and the withdrawn hydrocarbon vapor is recovered by a hydrocarbon vapor recovery unit in fluid communication with the ionic liquid reactor for recycling condensed hydrocarbons to the ionic liquid reactor. Processes for ionic liquid catalyzed alkylation are also disclosed.