Biomass Conditioning System Separating Bark and Debris
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Solution Overview
Problem
Biomass materials, such as forest biomass, often contain undesirable materials like bark, silt, leaves, sand, and dirt that hinder processing in applications like heat generation, biofuel production, and bioelectricity generation, as they can reduce equipment lifespan and process effectiveness.
Innovation Solution
A biomass conditioning system comprising a conditioning tank, water input device, containment device, spillway, and moving separation device, where biomass is immersed in water to separate into floating and non-floating portions, with the moving separation device further separating the non-floating portion into conditioned biomass and debris, allowing for effective removal of undesirable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biomass is used directly without conditioning, then processing simplicity is maintained, but equipment lifespan and process effectiveness deteriorate due to undesirable materials like sand, dirt, and bark
Solution Approach 1:
The conditioning system segments the separation process into distinct stages: initial floating separation of bark in a conditioning tank, followed by sinking separation of debris in a second tank. This segmentation allows each stage to target specific undesirable materials, improving equipment lifespan through systematic removal of contaminants without requiring a single complex separation system
Solution Approach 2:
Water serves as an intermediary medium in both separation stages. In the first tank, water enables bark to float and separate from biomass. In the second tank, water allows debris to sink and separate from conditioned biomass. This intermediary approach removes contaminants effectively while maintaining relatively simple processing equipment
2Reliability
If biomass containing bark is processed, then processing simplicity is maintained, but ash content increases reducing process effectiveness
Solution Approach 1:
The system extracts bark from biomass through flotation in the first conditioning tank, where bark floats to the surface and is removed. This extraction of the harmful component (bark that increases ash content) before further processing improves process effectiveness while using a relatively simple flotation-based separation approach
Solution Approach 2:
The conditioning system performs preliminary removal of bark and debris before the biomass enters main processing operations like densification or combustion. By removing undesirable materials in advance, the system prevents ash content increase and equipment damage, improving process effectiveness without adding complexity to the core processing operations
3Duration of action of moving object
If sand and dirt are present in biomass, then no additional processing is needed, but service life of chipper components and pelletizing dies is reduced
Solution Approach 1:
The separation process is segmented into two tanks: the first removes bark through flotation, and the second removes denser debris including sand and dirt through sinking. This segmented approach protects processing components by systematically removing different types of contaminants, extending service life of chipper components and pelletizing dies while maintaining processing throughput
Solution Approach 2:
The system uses the natural density differences between biomass, bark, and debris to achieve separation without requiring complex mechanical intervention. Biomass, bark, and debris automatically separate in water based on their densities, and the system simply needs to collect and remove the separated materials, extending component life with minimal impact on productivity
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 system effectively increases the percentage of wood in the biomass, reduces ash content, and prepares biomass for further processing by removing unwanted materials, enhancing the efficiency and longevity of equipment in various biomass applications.
Implementation Method 1
Biomass is immersed in the water, thereby causing it to separate into a floating portion (e.g., bark) and a non-floating portion (e.g. biomass and debris)
Implementation Method 2
The non-floating portion is further separated into conditioned biomass and debris by the moving separation device
Data Source
AI summary
The disclosure is directed generally a biomass conditioning system and methods for conditioning biomass to remove undesirable material for further processing and applications. In some embodiments, the disclosure includes a biomass conditioning system including a conditioning tank, a water input device, a biomass input device, a containment device, a spillway, and a moving separation device. In some embodiments, methods according to the disclosure include pumping water into a conditioning tank, depositing biomass into the conditioning tank, allowing the biomass to soak in the water and separate into a bark portion and a non-bark portion, allowing the bark portion to float to a water line, containing the bark portion to one side of the conditioning tank, moving the bark portion into a bark storage area, separating the non-bark portion into a biomass portion and a debris portion, and moving the conditioned biomass portion into a storage area.