Alkali Metal Bicarbonate Particles with Resin Acid Coating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Alkali metal bicarbonate particles produced by spray-drying typically dissolve rapidly in aqueous media, necessitating the development of methods that enhance their dissolution time and CO2 release properties.
Innovation Solution
Incorporating resin acids or fatty acids as additives during the preparation of alkali metal bicarbonate particles through spray-drying, co-grinding, or fluidized bed coating processes, which results in particles with extended dissolution times and improved CO2 release characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If spray-drying is used to produce alkali metal bicarbonate particles, then fine particles with controlled bulk density are obtained, but the particles dissolve rapidly in aqueous media
Solution Approach 1:
A coating layer comprising resin acid or fatty acid is applied as an intermediary substance on the surface of the alkali metal bicarbonate particles. This coating layer acts as a mediator that controls the interaction between the particles and aqueous media, thereby extending dissolution time while maintaining the fine particle morphology achieved through spray-drying
Solution Approach 2:
The invention creates a composite particle structure where the core consists of alkali metal bicarbonate and the outer layer comprises resin acid or fatty acid coating. This composite structure combines the desirable fine particle characteristics of spray-dried bicarbonate with the dissolution-controlling properties of the organic acid coating
2Speed
If alkali metal bicarbonate particles are produced by conventional methods, then rapid dissolution is achieved, but CO2 release properties are insufficient
Solution Approach 1:
The invention changes the surface chemical parameters of the bicarbonate particles by coating with resin acid or fatty acid. This modification alters the dissolution kinetics and CO2 release characteristics, achieving reliable and controlled CO2 release while maintaining appropriate dissolution speed for the intended application
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 use of resin acids or fatty acids significantly increases the dissolution time of alkali metal bicarbonate particles and enhances their CO2 release properties, making them suitable for various applications, including as foaming agents and in the food industry.
Implementation Method 1
Incorporating resin acids or fatty acids as additives during the preparation of alkali metal bicarbonate particles through spray-drying, co-grinding, or fluidized bed coating processes
Implementation Method 2
The particles are prepared by spray-drying a dilute aqueous solution or suspension of the bicarbonate
Implementation Method 3
crystallization by carbonization with carbon dioxide of a solution or suspension of the corresponding alkali metal (sodium or potassium carbonate for example) or a solution or suspension of the hydroxide of the corresponding alkali metal
Data Source
AI summary
Powder compositions comprising alkali metal bicarbonate particles and an additive. A process for preparing alkali metal bicarbonate particles by spray-drying of an aqueous solution or suspension comprising 1-10% by weight of alkali metal bicarbonate and a resin acid or a fatty acid as additive. A process for preparing alkali metal bicarbonate particles by co-grinding the alkali metal bicarbonate in the presence of a resin acid as additive. A process for preparing alkali metal bicarbonate particles by fluidized bed coating of the alkali metal bicarbonate in the presence of a resin acid, fatty acid or a wax as additive.