Lignin Component Purification via Extended Acid Treatment
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Solution Overview
Problem
Existing methods for manufacturing lignin components often result in products with high ash and carbohydrate content, which affect their purity, filterability, and dry solids content, leading to increased energy consumption and water usage, and do not effectively improve the properties of lignin for various applications.
Innovation Solution
A method involving acid treatment of lignin material with optimized process parameters such as retention time, temperature, and pH level to reduce ash and carbohydrate content, and include additional steps like acid washing and hydrolysis to enhance the properties of the lignin component, such as purity and dry solids content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional acid treatment methods are used for lignin separation, then lignin can be obtained, but the product has high ash and carbohydrate content resulting in low purity and poor filterability
Solution Approach 1:
The patent applies parameter changes by optimizing acid treatment conditions including using diluted acid (0.1-10% concentration), controlling temperature (20-100°C), and extending retention time (1 minute to several hours). These parameter modifications enable effective removal of ash and carbohydrates while maintaining lignin integrity, thereby improving purity and filterability
Solution Approach 2:
The patent segments the acid treatment process into distinct stages: initial acid treatment to remove ash, followed by carbohydrate removal steps, and final filtration. This segmentation allows each harmful component to be addressed separately with optimized conditions for each stage, improving overall purification efficiency
2Productivity
If conventional lignin treatment methods are used, then lignin component can be produced, but energy consumption and water usage are increased
Solution Approach 1:
The patent implements continuous acid treatment processes where lignin slurry flows continuously through treatment zones, eliminating idle time and maximizing the efficiency of energy input. The continuous operation allows for steady-state conditions that optimize energy utilization while maintaining consistent product quality
Solution Approach 2:
By optimizing treatment parameters such as using lower acid concentrations (0.1-10%), controlling temperature ranges (20-100°C), and adjusting retention times, the patent reduces the energy input required for treatment while achieving the same or better purification results, thereby improving energy efficiency
3Manufacturing precision
If acid treatment is applied to remove ash and carbohydrates, then purity improves, but filterability and dry solids content are affected
Solution Approach 1:
The patent applies preliminary acid treatment to remove ash and carbohydrates before the filtration step. By pre-conditioning the lignin slurry with acid under optimized conditions, the harmful components are removed in advance, preventing them from interfering with the filtration process and ensuring smooth operation of subsequent filtration equipment
Solution Approach 2:
The patent carefully controls acid concentration (0.1-10%), temperature (20-100°C), and retention time to achieve purification without excessive lignin degradation or precipitation that would harm filterability. These optimized parameters ensure that purity improvement does not come at the cost of operational difficulty
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 produces lignin components with improved purity, dry solids content, and filterability, reducing energy and water consumption, and enhancing their suitability for various applications, including activated carbon and carbon fiber production.
Implementation Method 1
a method of making a lignin component from lignin material by an acid treatment, the method comprising: forming a lignin component of lignin material by treating the lignin material in at least one acid treatment stage
Data Source
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AI summary
The invention relates to a method for making a lignin component from lignin material by an acid treatment, the method comprising: forming a lignin component of lignin material by treating the lignin material in at least one acid treatment stage; and optimizing process conditions by means of a combination of process parameters comprising retention time, temperature and pH level at the acid treatment stage so that the retention time is over 6 hours during at least one acid treatment stage. Further, the invention relates to corresponding lignin components, a use of the lignin component and a product.