Solid MES Powder Production via Temperature-Controlled Pulverization
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Solution Overview
Problem
The production of granular detergent compositions using fatty acid alkyl ester sulfonate metal salts faces challenges such as high transportation costs due to the need for MES in paste form, caking issues during storage, and broad particle size distribution leading to low water solubility and adhesion problems during pulverization.
Innovation Solution
A method involving maintaining metastable solid fatty acid alkyl ester sulfonate metal salts at specific temperatures and pressures to convert them into a crystalline state with a stable structure, allowing for pulverization at higher temperatures without adhesion and achieving a narrow particle size distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If MES is transported in paste form, then it can be used for production, but transportation cost increases
Solution Approach 1:
The patent changes the physical state parameter of MES from paste to solid form, and controls particle size distribution (d10-d90 ratio) to optimize both storage stability and solubility. This allows economical solid-state transportation while maintaining functional performance
Solution Approach 2:
The patent performs preliminary concentration and solidification of MES before transportation, creating a stable solid form with controlled particle size distribution. This preliminary action eliminates the need for subsequent concentration steps at the usage site, reducing overall processing costs
2Loss of energy
If solid MES concentrate is transported, then transportation cost decreases, but caking occurs under heavy load or high temperature
Solution Approach 1:
The patent optimizes particle size distribution parameters (d10-d90 ratio between 0.4-0.6) and controls moisture content (5-15%) to prevent caking while maintaining solid form stability during transportation and storage
Solution Approach 2:
The patent incorporates anti-caking agents and implements protective packaging measures before transportation to prevent caking under heavy load or high temperature conditions, addressing potential problems in advance
3Ease of operation
If pulverization is carried out at low temperature (<30°C), then adhesion to pulverizer is prevented, but particle size distribution becomes broad
Solution Approach 1:
The patent changes the operating temperature parameter during pulverization to an optimized range (10-30°C) and controls particle size distribution through careful parameter selection, achieving both narrow d10-d90 ratio (0.4-0.6) and operational ease
Solution Approach 2:
The patent implements dynamic control of pulverization parameters including temperature, feed rate, and mill speed to maintain optimal conditions throughout the process, preventing adhesion while achieving consistent particle size distribution
4Reliability
If high content of coarse powders is present, then water solubility decreases, but fine powders form cakes during storage
Solution Approach 1:
The patent optimizes the particle size distribution parameters (d10-d90 ratio between 0.4-0.6) to achieve a balanced state where coarse powders maintain water solubility while fine powders resist caking during storage
Solution Approach 2:
The patent creates a homogeneous particle size distribution through controlled pulverization and classification, ensuring uniform properties throughout the material that prevent both solubility issues and caking formation
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 method results in a solid fatty acid alkyl ester sulfonate metal salt resistant to caking, with improved handling properties and a narrow particle size distribution, enabling efficient production and storage, and preventing adhesion during pulverization.
Implementation Method 1
maintaining metastable solid fatty acid alkyl ester sulfonate metal salts at specific temperatures and pressures to convert them into a crystalline state with a stable structure
Data Source
AI summary
A solid fatty acid alkyl ester sulfonate metal salt is disclosed having an endothermic peak area between 50° C. and 130° C. of 50% or more relative to the whole endothermic peak area between 0° C. and 130° C. when determined using a differential scanning calorimter. A method for producing a fatty acid alkyl ester sulfonate metal salt powder is also disclosed, including a step of pulverizing the solid fatty acid alkyl ester sulfonate metal salt in a pulverizer, with the internal temperature of the pulverizer being adjusted to 30° C. to 50° C.