Cover System with Wand for Particulate Transfer
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Solution Overview
Problem
The unloading of particulate substances from containers in fluid catalytic cracking (FCC) operations exposes the substances to the ambient environment, leading to contamination, degradation, and potential hazards due to moisture and oxygen exposure, especially for hygroscopic and pyrophoric materials.
Innovation Solution
A cover system with a wand and vacuum connection allows for the unloading of particulate substances from containers while maintaining the cover in place, using a hose or pipe to draw the substances into an injection device, minimizing exposure to the environment and preventing pressure differentials that could damage the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cover is removed to unload particulate substances, then the unloading process can be completed, but the substances are exposed to environmental contamination and degradation
Solution Approach 1:
A transfer tube serves as an intermediary component that connects the interior of the covered container to the external environment. The tube allows particulate substances to be vacuumed through it while the cover remains in place, providing a controlled pathway that prevents environmental contamination during the unloading process
Solution Approach 2:
The cover system maintains an inert or controlled atmosphere inside the container by keeping the cover in place during unloading. This prevents oxygen and moisture from the ambient environment from contacting the particulate substances, thereby preventing oxidation and degradation of hygroscopic materials
2Strength
If the cover is removed to prevent pressure differential, then container damage is avoided, but fugitive emissions and human exposure increase
Solution Approach 1:
The transfer tube acts as a mediator that allows vacuuming to occur while the cover remains sealed. This prevents substantial pressure differentials from developing (protecting container integrity) while simultaneously containing fugitive emissions and preventing human exposure to toxic or caustic substances
3Object-affected harmful factors
If the cover remains in place during vacuuming, then environmental exposure is prevented, but pressure differential may damage the container
Solution Approach 1:
The transfer tube provides a controlled pathway that allows vacuuming to proceed with the cover in place (preventing environmental exposure) while managing pressure differential effects to avoid container damage
Solution Approach 2:
The system segments the container interior from the external environment using the cover and transfer tube arrangement. This segmentation allows the cover to remain in place during vacuuming, maintaining environmental isolation while the transfer tube handles the material transfer
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 method enables the efficient transfer of catalysts and additives into FCC units while protecting them from environmental contaminants, reducing fugitive emissions and human exposure, and maintaining the integrity of the substances during unloading.
Implementation Method 1
drawing the particulate substance through the wand, the fitting, and the pipe or hose
Implementation Method 2
Vacuuming the catalyst or additive while the cover of the container is removed
Data Source
AI summary
Preferred processes are provided for unloading a particulate substance from a container using a cover system comprising a cover and a wand extending through the cover. The processes can include installing the cover system on the container so that the cover mates with the container and the wand extends into the particulate substance, connecting a pipe or a hose to the wand, and drawing the particulate substance through the wand and the pipe or hose.