Catalyst Feed Vessel Heat Exchange for Flowability
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Solution Overview
Problem
Heterogeneous catalyst systems in polymerization processes experience poor flowability due to elevated temperatures, leading to clogging and inefficiencies in catalyst delivery, which affects polymerization efficiency and requires frequent system maintenance, resulting in economic losses.
Innovation Solution
A catalyst feed system with a heat exchange system maintains the catalyst temperature below the critical flow temperature, improving flowability by regulating the temperature of the catalyst feed vessel and transport systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the catalyst is stored and transported at ambient temperature, then the handling and operation are simple, but the catalyst exhibits poor flowability and clogging occurs
Solution Approach 1:
The patent applies parameter changes by controlling the temperature of the catalyst storage and feed system below the catalyst's melting point. This temperature parameter control prevents the catalyst from transitioning to a sticky, non-flowing state while maintaining ease of handling through automated temperature-regulated systems.
Solution Approach 2:
The patent introduces a heat exchange system as an intermediary between the catalyst and the environment. This mediator actively removes heat from the catalyst feed system, preventing temperature rise that would cause poor flowability, while allowing simple ambient handling conditions to prevail.
2Ease of operation
If the catalyst temperature rises above the critical flow temperature, then the handling becomes easier, but the flowability deteriorates and clogging occurs
Solution Approach 1:
The patent maintains the catalyst temperature parameter below the critical flow temperature throughout storage and feeding operations. This parameter control ensures both adequate flowability for handling and prevention of clogging that would disrupt polymerization productivity.
Solution Approach 2:
The heat exchange system incorporates temperature monitoring and feedback control to maintain the catalyst below its critical flow temperature. This feedback mechanism automatically adjusts cooling to prevent temperature excursions that would cause clogging and productivity loss.
3Device complexity
If no temperature control is applied, then the device complexity is reduced, but clogging and maintenance requirements increase
Solution Approach 1:
The patent introduces a heat exchange system as an intermediary component that actively manages catalyst temperature. This mediator prevents clogging through continuous cooling, thereby reducing maintenance frequency despite the added device complexity of the temperature control system.
Solution Approach 2:
The heat exchange system provides beforehand cushioning by continuously removing heat from the catalyst feed system before temperature rise can cause clogging. This preventive approach reduces maintenance requirements by avoiding clogging events entirely.
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 catalyst flowability, reduces clogging, and improves polymerization efficiency, leading to increased productivity and decreased reactor downtime by maintaining the catalyst system at temperatures below the critical flow temperature.
Implementation Method 1
A catalyst feed system with a heat exchange system maintains the catalyst temperature below the critical flow temperature, improving flowability by regulating the temperature of the catalyst feed vessel and transport systems.
Implementation Method 2
a heat exchange system for maintaining a temperature of the catalyst in the catalyst feed system below the critical flow temperature of the catalyst
Data Source
AI summary
Catalyst feed systems and processes utilizing such systems are described herein. Some embodiments disclosed herein relate to a process for improving the flowability of catalyst in a catalyst feed system, including providing a catalyst feed vessel with at least one heat exchange system for maintaining the catalyst system temperature below a critical flow temperature. Also disclosed is a catalyst feed system for the polymerization of olefins including a catalyst feed vessel; and a heat exchange system for maintaining a temperature of a catalyst within the catalyst feed vessel. Additionally disclosed is a process for polymerization of olefins including maintaining a supported catalyst in a catalyst feed vessel below a critical flow temperature of the catalyst; feeding the catalyst to a polymerization reactor; and contacting the catalyst with an olefin to form a polyolefin.