Macromolecular Polymer Binder for Coal Formed Products
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Solution Overview
Problem
Existing binders for coal-containing formed products require high concentrations to achieve sufficient strength, leading to increased processing costs and the need for high-temperature facilities due to high viscosity at ordinary temperatures.
Innovation Solution
A binder comprising a macromolecular polymer with an intrinsic viscosity of 2.0 dl/g or higher, which allows for sufficient strength at low addition concentrations and can be used at ordinary temperatures, reducing the need for specialized equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional binders (bitumen, tar, asphalt) are used to retain formability and impart strength, then sufficient strength is achieved, but the binder concentration must be raised which increases processing cost
Solution Approach 1:
The patent changes the molecular weight parameter of the polymer binder, using high molecular weight polymers (intrinsic viscosity ≥2.0 dl/g) to achieve superior binding performance at lower concentrations compared to conventional bitumen-based binders
Solution Approach 2:
The patent employs synthetic polymer materials (polyacrylonitrile, polyacrylic acid, polyacrylamide, or their copolymers) as alternative binder materials to conventional bitumen and asphalt, creating a composite binding system that achieves better strength-to-concentration ratio
2Temperature
If conventional binders are used at ordinary temperature, then the process is simple, but the binder viscosity is too high requiring high temperature kneading which increases capital spending
Solution Approach 1:
The patent selects polymers with specific intrinsic viscosity parameters (≥2.0 dl/g) that maintain optimal processing viscosity at ordinary temperatures, eliminating the need for high-temperature processing facilities while ensuring proper kneading and binding performance
3Quantity of substance
If high molecular weight polymer is used to reduce binder concentration, then processing cost decreases, but the viscosity may increase making kneading difficult
Solution Approach 1:
The patent optimizes the intrinsic viscosity parameter to be ≥2.0 dl/g, which balances the competing requirements: high enough molecular weight to achieve low binder concentration for cost reduction, but not so high that processing viscosity becomes unmanageable during kneading
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 provides coal-containing formed products with sufficient strength at low binder concentrations, enabling production at ordinary temperatures without the need for expensive equipment, thus reducing capital spending.
Implementation Method 1
a binder for a coal-containing formed product, which contains a macromolecular polymer having an intrinsic viscosity of 2.0 dl/g or higher, exhibits a sufficient strength
Data Source
AI summary
Provided is a binder for a coal-containing formed product, which contains a macromolecular polymer having an intrinsic viscosity of 2.0 dl/g or higher.