Olefin Gas Scrubber Nozzle Coating to Prevent Clogging
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Solution Overview
Problem
Existing methods for removing organoaluminum components from olefin gas in polyolefin production are inadequate in preventing nozzle clogging, leading to hindered long-term continuous operation and inefficiencies in recycling the gas for polymerization.
Innovation Solution
A method involving a scrubber system where the gas nozzle's surface has a water contact angle of 80° or more, using materials or coatings with similar properties, and a double pipe configuration to efficiently contact olefin gas with water, preventing solid product adhesion and clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional scrubber is used to remove organoaluminum component from olefin gas, then the organoaluminum component is removed, but solid product precipitates and clogs the gas flow path in the scrubber
Solution Approach 1:
The invention changes the physical parameter of the gas nozzle surface by controlling its water contact angle to be 80° or more (hydrophobic surface). This parameter change prevents solid product adhesion at the gas outlet peripheral edge portion, thereby preventing clogging and enabling continuous operation without interruption for cleaning
Solution Approach 2:
The invention applies a coating material that replicates the hydrophobic surface property (high water contact angle) on the gas nozzle surface. This coating copies the surface characteristic that prevents solid product adhesion, effectively solving the clogging problem while maintaining the functional integrity of the nozzle
2Duration of action of stationary object
If water contact angle of gas nozzle surface is increased to 80° or more, then solid product adhesion is prevented, but additional coating or material selection complexity is introduced
Solution Approach 1:
The invention specifies a quantitative parameter (water contact angle ≥80°) for the gas nozzle surface, transforming a qualitative requirement into a measurable and controllable parameter. This enables systematic material selection and coating application while achieving the goal of preventing solid product adhesion
Solution Approach 2:
The invention uses a coating material that can be applied to the gas nozzle surface to provide the hydrophobic property. This coating acts as a sacrificial or replaceable layer that prevents solid product adhesion, and can be reapplied or replaced when worn, avoiding the need to replace the entire nozzle
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 effectively prevents nozzle clogging, enabling long-term continuous operation and efficient recycling of olefin gas for polyolefin production, ensuring stable plant operation.
Implementation Method 1
a surface of a gas outlet peripheral edge portion of a gas nozzle configured to supply the olefin gas to the scrubber has a water contact angle of 80° or more
Data Source
AI summary
In a method for purifying an olefin gas in which an olefin gas containing an organoaluminum component is brought into contact with water in a scrubber to remove the organoaluminum component, by making a surface of a gas outlet peripheral edge portion of a gas nozzle for supplying the olefin gas to the scrubber have a water contact angle of 80° or more, clogging of a purification system, which is a factor that hinders a long-term continuous operation, can be prevented in a continuous process in which the olefin gas containing the organoaluminum component is brought into contact with water to precipitate and remove the organoaluminum component.