Helical Impact Module for Catalyst Loading

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Solution Overview

Problem

Current methods for loading catalysts into vertical tubes in hydrogen generation units face issues such as particle breakage, uneven density distribution, and structural damage due to vibration or impact, leading to inefficiencies and increased operational costs.

Innovation Solution

An apparatus with a double helix impact-absorbing module, featuring a cylindrical nucleus and propeller-shaped blades, is used to load particulate material, providing a suspension system that reduces impact and ensures uniform distribution by minimizing vertical velocity and using a low-friction material to prevent retention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If catalyst particles are dropped from great height into vertical columns, then loading speed is improved, but particle breakage and damage increase

Engineering Contradiction:
Improveloading speedVSAvoidparticle breakage
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a damping module with helical springs positioned at the bottom of the vertical column to cushion the impact of catalyst particles before they reach the bottom. This beforehand cushioning mechanism absorbs the impact energy, preventing particle breakage while maintaining fast loading speeds. The springs are pre-installed to provide immediate shock absorption when particles are dropped from height.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Manufacturing precision

If vertical columns are vibrated or subjected to blows during loading, then density uniformity is improved, but structural damage and reduced service life occur

Engineering Contradiction:
Improvedensity uniformityVSAvoidcolumn structural integrity
Core Design Contradiction:
Manufacturing precisionVSStrength

Solution Approach 1:

The patent extracts the density uniformity function from the column structure itself and transfers it to a separate damping module with helical springs. Instead of vibrating or blowing the entire column structure, the damping module independently absorbs impact energy and promotes uniform density through its spring mechanism, thereby protecting the column's structural integrity while achieving the desired density uniformity.

Inventive Principle:
Principle #2Taking out (Extraction)

3Object-affected harmful factors

If socks made of plastic material are used to load catalyst, then particle breakage is reduced, but empty spaces between particles remain and density uniformity is not achieved

Engineering Contradiction:
Improveparticle breakageVSAvoiddensity uniformity
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The patent introduces a damping module with helical springs as an intermediary mechanism between the catalyst particles and the column bottom. This intermediary device performs dual functions: it cushions the impact to prevent particle breakage (similar to the sock method) while simultaneously promoting uniform density distribution through its spring-based mechanical action, thereby overcoming the limitation of the sock method where empty spaces persisted.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Extent of automation

If continuous spiral rod is used to transport material, then loading is automated, but device complexity and operational difficulty increase

Engineering Contradiction:
Improveloading automationVSAvoidrod handling complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent segments the continuous spiral rod into discrete, detachable damping modules that can be independently installed and removed. Each module contains its own helical springs and is suspended by wires, allowing for simpler handling and installation compared to a continuous rod. The segmentation reduces the operational difficulty of installing and maintaining the automation system while preserving the automated loading capability.

Inventive Principle:
Principle #1Segmentation

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 allows for faster, more efficient loading with reduced material breakage and uniform density distribution, lowering operational costs and extending the lifespan of the loading apparatus.

Implementation Method 1

at least one damping (impact-absorbing) module, which is made up of an impact-absorber in the form of a double helix

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

impact-absorbing module, featuring a cylindrical nucleus and propeller-shaped blades, is used to load particulate material, providing a suspension system that reduces impact

Methodology Applied
Scientific EffectImpact absorption: Damping

Implementation Method 3

using a low-friction material to prevent retention

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS8182758B2Apparatus and method for loading particulate material into vertical tubes
Publication Date: 2012.05.22 PETROLEO BRASILEIRO SA PETROBRAS
  • US8182758B2 patent drawing
  • US8182758B2 patent drawing
  • US8182758B2 patent drawing

AI summary

An apparatus and method for loading particulate material in a vertical tube comprising at least one impact-absorbing module, a central axis and a sustaining wire to position the apparatus suspended in the interior of the tube in such a way as to allow loading and uniform distribution of all the material loaded in the tube and the method of loading that uses the apparatus is also described.