Compressed Biomass Coating via Heated Wax Immersion
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Solution Overview
Problem
Compressed biomass products, such as sawdust bricks and logs, are highly susceptible to moisture degradation and can harbor undesirable organisms, making them unsuitable for weatherproof or waterproof applications, especially during shipping and storage.
Innovation Solution
A coating method involving a conveyor system that applies heated, liquid wax or water-resistant materials to the compressed biomass products, ensuring they are fully submerged in the coating material, which is then heated to a controlled temperature above its melting point to create a waterproof or water-resistant barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed biomass products are left untreated, then they maintain their natural structure and composition, but they are highly susceptible to moisture degradation and disintegrate quickly under water spray
Solution Approach 1:
The coating material is heated to a controlled temperature above the melting point of wax (e.g., above 190°F or 215°F) before application, and the biomass products are pre-heated or pre-dried to ensure proper coating adhesion and penetration. This preliminary preparation ensures the coating forms an effective waterproof barrier when applied
Solution Approach 2:
The coating material undergoes phase change from solid to liquid by heating above its melting point, enabling it to flow and penetrate the biomass product surface. The temperature parameter is carefully controlled to maintain the coating in liquid state during immersion, ensuring complete coverage and penetration without degradation
2Ease of operation
If the conveyor surface is smooth, then the compressed biomass products can move easily through the coating tank, but they may slip on the conveyor surface and fail to be properly positioned for coating
Solution Approach 1:
The conveyor surface has localized irregularities (bends or kinks in chain wires) at specific positions to create friction zones that prevent slipping. These irregularities are strategically placed to engage with the biomass products at critical points during conveyance, ensuring proper positioning without completely restricting movement
3Reliability
If the conveyor surface is positioned high relative to the coating material, then the products can be easily loaded and unloaded, but the products cannot be fully immersed in the coating material for complete coverage
Solution Approach 1:
The conveyor is positioned at an angle relative to the horizontal plane, creating a dimensional change that allows products to be easily loaded at the high end and unloaded at the low end while still achieving full immersion in the coating material. The angled positioning utilizes gravity to assist product movement while ensuring complete coating coverage
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 effectively renders compressed biomass products waterproof, preventing disintegration under water spray and killing pests, thereby enhancing storage, shipping, and burn qualities while preventing the transport of organisms to new areas.
Implementation Method 1
heating a coating material in a tank to a temperature above its melting point, so that it is in a liquid state
Implementation Method 2
applying heated, liquid coating material to the products
Data Source
AI summary
A coating method for compressed biomass products for providing the products with a substantially monolithic, water resistant coating to facilitate improved storage characteristics. The coating Method for compressed biomass products generally includes conveying the products into a tank or spray of heated, liquified coating material that then cools and hardens to provide a uniform, monolithic coating on the entire outer surface of the products.