Waste Cooking Oil Pulp Softener Preparation With Low Wastewater
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Solution Overview
Problem
Current methods for producing pulp softeners using waste cooking oil are complex, costly, and result in environmental pollution, while traditional pulp production with caustic soda generates significant waste water and pollution, necessitating a more efficient and sustainable alternative.
Innovation Solution
A method involving steps of filtering, oil-water separation, and controlled addition of caustic soda to produce pulp softeners using waste cooking oil, optimizing parameters like pore diameter, separation time and temperature, and stirring intensity to ensure product homogeneity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If complex production processes are used to convert waste cooking oil into biodiesel, lubricating oil, and other products, then resource utilization is achieved, but production costs increase and solid waste is generated
Solution Approach 1:
The patent extracts only the necessary components from waste cooking oil for pulp softening applications, rather than processing the entire oil through complex biodiesel conversion. The method selectively removes impurities and prepares the oil directly for its intended use in pulp production, eliminating unnecessary intermediate steps and reducing overall process complexity
Solution Approach 2:
The patent makes waste cooking oil serve multiple functions: it acts as both a softening agent and a lubricant in pulp production. By demonstrating that waste cooking oil can directly replace traditional chemical softeners without requiring conversion into separate specialized products, the method reduces the need for multiple production lines and simplifies the overall industrial process
2Manufacturing precision
If traditional caustic soda is used to soften raw materials for pulp production, then softening effect is achieved, but production costs increase and large amounts of waste water are discharged
Solution Approach 1:
The patent converts waste cooking oil, which would otherwise be discarded as waste or require complex processing, into a beneficial softening agent for pulp production. By treating the waste oil through simple filtration and preparation steps, it transforms an environmental burden into a useful resource that replaces harmful caustic soda, thereby converting harm into benefit while reducing waste water generation
Solution Approach 2:
The patent changes the chemical parameter of the softening agent from inorganic caustic soda to organic waste cooking oil. This parameter change fundamentally alters the byproducts of the softening process: instead of generating alkaline waste water that requires extensive treatment, the waste oil process produces minimal wastewater with different chemical characteristics that are easier to manage and dispose of environmentally
3Quantity of substance
If existing methods for producing pulp softeners using waste cooking oil are used, then softener production is achieved, but production quality becomes unstable with large batch-to-batch variations
Solution Approach 1:
The patent performs preliminary standardization of waste cooking oil before it is used in softener production. By establishing consistent pre-treatment protocols including filtration, drying, and quality testing before the softening process begins, the method ensures that raw material variability is controlled upfront, leading to more stable and consistent final product quality across different production batches
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 simplifies production, reduces costs, and significantly decreases environmental impact by utilizing renewable resources, improving product quality and reducing waste water generation.
Implementation Method 1
filtering out the solid matter from the liquid waste cooking oil through the filter mesh
Implementation Method 2
separating water from the preliminarily purified waste cooking oil using the oil-water separator
Implementation Method 3
heating to 90° C. with continuous stirring
Implementation Method 4
adding 30 kg of the caustic soda in the process of the heating, performing continuous stirring for 2 h-3 h after the caustic soda is completely added
Data Source
AI summary
Disclosed is a method for producing pulp softeners using waste cooking oil. Using waste cooking oil to produce pulp softeners through steps1 to 5 can not only reduce the process and cost of resource utilization of waste cooking oil, but also reduce the emission of pollutants, which is in line with the concept of environmental protection, and raw materials used in the production process are all renewable resources and are sustainable. The production process is simple and fast, and key technical parameters for each step are set optimally to ensure a smooth treatment process, improving the preparation efficiency and quality stability of a product.