Solid Acrylamido Alkyl Sulfonate Direct Precipitation
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Solution Overview
Problem
The existing methods for preparing solid acrylamido alkyl sulfonates are costly, inefficient, and difficult to commercialize due to high energy consumption and limited effectiveness in producing solid salts, which are not suitable for non-aqueous systems and require special storage conditions.
Innovation Solution
A method involving the reaction of acrylamido alkyl sulfonic acids with an excess of alkaline substances in a solvent, allowing for direct precipitation of the product, eliminating the need for energy-intensive solvent removal and temperature reduction processes, and enabling the reuse of mother liquids for further processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If re-crystallization and purification methods are used to prepare solid acrylamido alkyl sulfonates, then the purity of the product is improved, but the energy consumption and production cost increase significantly
Solution Approach 1:
The patent changes the chemical parameters of the reaction system by using excess alkaline substances and specific solvents to alter the solubility characteristics of the product. This allows the solid salt to precipitate directly from the reaction mixture without requiring energy-intensive re-crystallization or concentration steps, thereby maintaining product purity while significantly reducing energy consumption
Solution Approach 2:
The patent extracts the product from the reaction mixture through direct precipitation by adding excess alkaline substances. The solid salt forms and can be separated by simple filtration, eliminating the need for complex re-crystallization processes that would consume additional energy and time
2Adaptability or versatility
If conventional neutralization methods are used to prepare aqueous salt solutions, then the product is suitable for aqueous systems, but it is not suitable for non-aqueous systems and requires special storage conditions
Solution Approach 1:
The patent changes the physical state parameter of the product from aqueous solution to solid salt form by using excess alkaline substances during neutralization. This transformation makes the product compatible with non-aqueous systems and eliminates the need for special storage conditions such as temperature control and protection from sunlight, while maintaining chemical compatibility with both aqueous and non-aqueous applications
3Ease of operation
If aqueous salt solutions are produced and transported, then the product is ready for use, but the transportation cost increases due to high water content
Solution Approach 1:
The patent extracts the water component from the product system by producing solid salt directly through neutralization with excess alkaline substances. This eliminates the need to transport large volumes of water, reducing transportation costs and energy consumption while the solid salt can be easily dissolved in appropriate solvents at the destination to achieve the desired aqueous solution for use
4Manufacturing precision
If solid acrylamido alkyl sulfonates are produced through complete neutralization and re-crystallization, then the product purity is improved, but the production efficiency decreases
Solution Approach 1:
The patent performs preliminary action by using excess alkaline substances during the neutralization step to ensure complete reaction and direct formation of solid salt with high purity. This preliminary chemical adjustment eliminates the need for subsequent re-crystallization steps, thereby maintaining product purity while significantly improving production efficiency and reducing manufacturing time
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 method significantly reduces production costs and time, enhances efficiency, and allows for the production of solid salts suitable for non-aqueous systems, making industrialized production feasible and environmentally friendly.
Implementation Method 1
making this kind of acidic compounds completely react with a alkaline substance in water at pH of 7 to 12.5 at -20°C ∼75°C
Implementation Method 2
the amount of the product D formed by the reaction between the material A and material B exceeds the solubility thereof under the reaction condition, and the product D can be continuously generated and directly precipitated (crystallized)
Implementation Method 3
The solid-liquid separation can be performed by using a filtration or a centrifugal separation
Implementation Method 4
The drying can be performed by using a vacuum drying, a spray drying, a flow drying or the like
Data Source
AI summary
The present invention provides a method for preparing a solid acrylamide alkyl sulfonate. Said method comprises: reacting 2-acrylamido-2-methylpropanesulfonic acid and analogs thereof with an alkaline substance in a solvent. The 2-acrylamido-2-methylpropanesulfonic acid and the analogs thereof and the alkaline substance are significant excess with respect to the solvent, so that the amount of the resulting acrylamido alkyl sulfonate exceeds the solubility under the reaction condition. The acrylamido alkyl sulfonate can be continuously generated and directly massively precipitated, and the precipitated solid product, i.e. the product, is collected. The method of the present invention can greatly improve production efficiency of products, save time, reduce cost, and easy to operate by leaving out the re-crystallization step and the like in the prior art.