Inclined Intake Duct for Chemical Looping Combustion Separator
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Solution Overview
Problem
Existing particle separators in chemical looping combustion processes face inefficiencies in separating unburnt particles from metal oxide particles due to limitations in gas entrainment capacity, incomplete separation of solid phases, and mechanical stress issues from complex geometries at high temperatures.
Innovation Solution
A particle separator design with an intake duct inclined at an angle between 10 and 70 degrees relative to the horizontal plane, featuring a vertical portion and an elbow, which enhances homogeneous particle distribution and reduces mechanical stress, allowing for improved separation efficiency and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a particle separator is used to separate unburnt particles from metal oxide particles, then separation efficiency is improved, but the separator height and cost increase due to complex geometry requirements
Solution Approach 1:
The patent changes the geometric parameters of the intake duct by inclining it at an angle between 10 and 70 degrees relative to the horizontal plane. This parameter modification improves particle distribution homogeneity and separation efficiency without requiring complex internal structures or increasing separator height, thus resolving the contradiction between separation efficiency and device complexity
Solution Approach 2:
The patent introduces a new dimensional aspect by inclining the intake duct in three-dimensional space rather than using conventional horizontal or vertical configurations. This spatial reorientation enables improved particle flow distribution and separation performance while maintaining a simple overall separator structure, addressing the contradiction between separation efficiency and geometric complexity
2Stability of the object's composition
If the intake duct is inclined at an angle between 10 and 70 degrees, then particle distribution homogeneity is improved, but the mechanical stress on the duct increases at high temperatures
Solution Approach 1:
The patent optimizes the inclination angle parameter within the range of 10 to 70 degrees to achieve a balance between particle distribution homogeneity and mechanical stress. This parameter optimization ensures adequate flow distribution while limiting excessive stress concentration that would occur at extreme angles, resolving the contradiction between distribution homogeneity and mechanical stress
Solution Approach 2:
The inclined intake duct acts as an intermediary element that mediates between the combustion zone and the separator chamber. The specific inclination angle range serves as an optimal compromise, allowing the duct to effectively distribute particles while withstanding the mechanical stresses imposed by high-temperature operation, thus resolving the contradiction between distribution quality and structural integrity
3Manufacturing precision
If existing particle separator designs are used, then separation of light and heavy particles is achieved, but gas entrainment capacity is limited reducing overall efficiency
Solution Approach 1:
The patent modifies the intake duct inclination angle parameter to optimize both particle separation and gas entrainment simultaneously. This parameter change creates a more effective flow pattern that enhances gas entrainment capacity while maintaining separation capability, resolving the contradiction between separation precision and productivity
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
The inclined intake duct design enhances particle separation efficiency, reduces the height and cost of the separator, and mitigates mechanical stress, achieving better separation and recycling of unburnt and metal oxide particles effectively.
Implementation Method 1
The particles are separated by elutriation in a particle separator (1)
Implementation Method 2
The particles are separated by elutriation in a particle separator (1)
Data Source
AI summary
The present invention relates to a device and a method for chemical looping combustion, for which the end of the intake duct (4) opening out within the chamber of the separator (1) is inclined with respect to a horizontal plane (H).