Variable Thickening Silica Production via Static Mixing
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Solution Overview
Problem
Existing processes for producing high-thickening pyrogenous silica are either costly in terms of feedstocks or require expensive equipment modifications, making it difficult to achieve variable thickening efficiently.
Innovation Solution
A process involving static mixing elements in pipepieces A and B to combine vaporous silicon compounds, oxygen, and combustible gases, followed by ignition and reaction in a flame, allowing for variation in thickening by adjusting velocities of the combustible gas stream while maintaining constant silicon compound velocities, thereby producing silica with variable thickening effects at lower equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing processes are used to produce high-thickening pyrogenous silica, then high thickening is achieved, but the process becomes costly in terms of feedstocks or requires expensive equipment modifications
Solution Approach 1:
The patent applies parameter changes by varying the velocity of the combustible gas stream while maintaining constant velocity of the silicon compound stream. This parameter adjustment allows control of thickening (3000-4000 mPas) without changing equipment or feedstock composition, resolving the contradiction between achieving high thickening and maintaining low cost
Solution Approach 2:
The process uses self-service by utilizing the combustible gas stream's velocity characteristics to control thickening. The system leverages the existing flow dynamics and combustion process to achieve variable thickening effects without requiring additional equipment modifications or expensive feedstocks
2Manufacturing precision
If existing processes are used to produce high-thickening pyrogenous silica, then high thickening is achieved, but expensive equipment modifications are required
Solution Approach 1:
The patent employs self-service by utilizing the existing combustion process and flow dynamics to control thickening. The system leverages the combustible gas stream's velocity characteristics and the reaction chamber's existing structure to achieve variable thickening effects without requiring additional equipment modifications
Solution Approach 2:
The invention uses parameter changes by adjusting the velocity of the combustible gas stream within the existing equipment framework. This allows control of thickening properties (3000-4000 mPas) through operational parameters rather than equipment modifications, maintaining simple device configuration
3Adaptability or versatility
If the velocity of the combustible gas stream is varied to control thickening, then variable thickening is achieved, but process control complexity increases
Solution Approach 1:
The patent applies segmentation by separating the control of thickening from other process parameters. By independently varying only the combustible gas stream velocity while maintaining constant silicon compound velocity and other parameters, the system achieves variable thickening with simplified control logic
Solution Approach 2:
The invention uses parameter changes by isolating the thickening control to a single variable - the combustible gas stream velocity. This approach allows variable thickening (3000-4000 mPas) to be achieved through a straightforward parameter adjustment without complicating the overall process control
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 process enables the production of silica with variable thickening effects while maintaining consistent BET surface areas, allowing for silicas with differing thickening properties to be produced at reduced costs and with simpler equipment configurations, effectively addressing the limitations of existing methods.
Implementation Method 1
They cause the formation of secondary flows extending across relatively large regions. Turbulent regions are also formed and lead to finer mixing.
Implementation Method 2
a feed port in a pipepiece A, said pipepiece A comprising one or more static mixing elements, is used to import product stream I into product stream II
Implementation Method 3
product stream V leaving pipepiece B is imported into a reaction chamber, ignited therein and reacted in a flame
Implementation Method 4
Hydrolysable for the purposes of the invention is to be understood as meaning that the silicon compound in the presence of steam are transformed into silica and a byproduct which is gaseous under the reaction conditions
Implementation Method 5
Oxidizable for the purposes of the invention is to be understood as meaning that the silicon compound in the presence of oxygen are converted into silica and a gaseous byproduct
Data Source
AI summary
A process for production of silica having variable thickening whereina) a product stream I containing at least a vaporous, hydrolysable and/or oxidizable silicon compound,b) a product stream II containing oxygen andc) a product stream III containing at least a combustible gasare made to react, whered) a feed port in a pipepiece A, the pipepiece A containing one or more static mixing elements, is used to import product stream I into product stream II, or vice versa and thereby create product stream IV, thene) a feed port in a pipepiece B, the pipepiece B containing one or more static mixing elements,is used to import product stream III in product stream IV and thereby create product stream V,f) product stream V leaving pipepiece B is imported into a reaction chamber, ignited therein and reacted in a flame, andg) the resultant solid material is separated off.