在亚马逊地区的木厂的木材废弃物用于生物能源的价值化和分组
Ricardo Pereira Soteli1, Adriano Reis Prazeres Mascarenhas2, Thiago de Paula Protásio3,4
1Faculty of Forestry Engineering, Graduate Program in Forestry and Environmental Sciences, Federal University of Mato Grosso (UFMT), 78.060-900, Cuiabá, Mato Grosso, Brazil.
概括
来自巴西的工业木材废弃物具有适合燃烧的能量特性. 将木材种类按相似特征分组,可以优化直接燃烧系统,以更好地管理能源和提高效率.
科学领域:
- 生物质能源 生物质能源
- 燃烧工程 燃烧工程
- 材料科学 材料科学 材料科学
背景情况:
- 工业木材废弃物是一个潜在的可再生能源.
- 直接燃烧系统需要详细了解燃料特性,以获得最佳性能.
- 鉴别各种木材废弃物的特点对于有效的能源管理至关重要.
研究的目的:
- 为了分析来自巴西马托格罗索州的17种热带木材废物物种的物理化学和能量特性.
- 根据与能源相关的特征对木材废弃物进行分组,以改善管理.
- 评估木材废弃物是否适用于直接燃烧系统.
主要方法:
- 概括分析 (基本密度,最终组成,结构化学,加热值).
- 最终分析以确定碳,,和氧含量.
- 主要成分分析 (PCA) 用于根据能量特性对物种进行分组.
主要成果:
- 基本密度在0.40至0.95gcm-3.3之间.
- 高碳含量 (>50%干质dB) 和中等含量 (~6%dB).
- 素含量平均>30%db,提取剂在3.3-23.6%db之间,挥发性物质>75%db,灰<2%db,以及更高的加热值~20 MJ kg−1.1.
- 根据PCA的数据,PCA确定了受能源特性影响的不同物种群.
结论:
- 分析的木材废弃物具有可供直接燃烧的令人满意的能量特性.
- 为了优化燃烧效率,将具有相似特性的物种分组至关重要.
- 这项研究为利用热带木材废弃物的能源管理策略提供了有价值的数据.
相关概念视频
Wood Products
129
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
129
Softwoods and Hardwoods
250
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
250
Introduction to Wood
323
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
323
Lumber
177
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
177
Wood Panel Products
123
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
123
Structural Properties and Dimensions of Lumber
180
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
180


