Flangeless Gas Feed Ring for Entrained Flow Gasification
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Solution Overview
Problem
Existing gas feed systems for entrained flow gasification face challenges in rapid pressure increase of fuel dust, leading to solidification, and previous fluidizing elements are complex, heavy, difficult to assemble, and prone to solidification due to mechanical instability and high differential pressures.
Innovation Solution
A compact gas feed ring element with a support ring and machined distributor space ensures high gas speeds without mechanical destruction, using a flangeless design with optimized opening configurations for improved fluidizing behavior and reduced material requirements, ensuring mechanical stability and efficient gas distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a prior art fluidizing element with double flange connection is used, then mechanical stability is achieved, but the device becomes complicated, heavy, and difficult to assemble
Solution Approach 1:
The patent combines the housing ring, support ring, and filter material into a single integrated gas feed ring element that is clamped into the flange connection. This merging of multiple components into one reduces assembly complexity while maintaining mechanical stability through the clamped design that distributes stresses across the integrated structure.
Solution Approach 2:
The gas feed ring element serves multiple functions simultaneously: the housing ring provides structural support and clamping, the support ring with openings provides mechanical stability and gas distribution, and the filter material filters the gas. This multi-functionality eliminates the need for separate components like baffle plates and expansion joints.
2Productivity
If high gas speeds are used for rapid tensioning, then productivity is improved, but the filter material may be mechanically destroyed
Solution Approach 1:
The support ring with openings is positioned behind the filter material to provide mechanical support and cushioning. This pre-positioned support structure prevents the filter material from being mechanically destroyed by high gas speeds while allowing rapid tensioning to proceed. The support ring acts as a backup structure that absorbs mechanical stresses.
Solution Approach 2:
The openings in the support ring are strategically configured to optimize gas distribution while maintaining structural integrity. The local configuration of openings allows high gas speeds in the fluidizing area while the support ring structure provides localized reinforcement where needed to protect the filter material.
3Ease of manufacture
If a compact flangeless design is used, then ease of manufacture and assembly are improved, but mechanical stability may be compromised
Solution Approach 1:
The integration of housing ring, support ring, and filter material into a single clamped assembly eliminates the need for multiple flange connections and separate components. This merging simplifies manufacturing and assembly while the clamped design maintains mechanical stability by distributing stresses across the integrated structure.
Solution Approach 2:
The design changes from a multi-component flanged assembly to a single clamped element with specific dimensional parameters. The clamping force and geometric parameters of the integrated structure are optimized to provide adequate mechanical stability while enabling easier manufacture and assembly.
4Strength
If the spacing between isolation valve and fluidizing area is increased for mechanical stability, then strength is improved, but the overall design height increases and solidification risk increases
Solution Approach 1:
The support ring with openings is integrated into the gas feed ring element itself, eliminating the need for separate structural components between the isolation valve and fluidizing area. This integration reduces the overall height while maintaining mechanical stability through the distributed support structure.
Solution Approach 2:
The support ring provides localized mechanical support and gas distribution exactly where needed in the fluidizing area, eliminating the need for increased spacing. The local configuration of openings and support structure provides adequate mechanical stability and prevents solidification without increasing overall height.
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 solution enables rapid tensioning and improved fluidizing behavior, preventing solidification and reducing material needs, while maintaining mechanical stability and optimizing flow without the need for additional mechanical elements like baffle plates.
Implementation Method 1
gas feed ring element for tensioning and fluidizing gas/solid suspensions
Data Source
AI summary
An annular gas feed element for use in gasification plants with a dry fuel supply. A gas feed ring element for tensioning and fluidizing gas/solid suspensions, in which gas feed ring element there is a housing ring which has a circumferential recess on its inner side, a support ring with a multiplicity of openings, filter material fitted between the support ring and the internal diameter of the housing ring, where the recess and the filter material delimit a distributor chamber, and a gas feed arranged from outside into the distributor chamber. The flangeless gas feed ring element makes rapid tensioning possible and secondly improves the fluidizing behavior and therefore the flow behavior.