户用型上吸式生物气化炉结构设计.docVIP

PAGE II PAGE I 辽宁工程技术大学毕业设计（论文） PAGE 1 摘要 随着化石燃料资源的日益减少，生物质能的利用正受到更多的重视。由于户用型生物质气化技术具有结构简单，管路短，操作维护简单方便，耗资少等优点，适应于我国农村。 本设计以玉米秸秆为物料，设计了一套能够满足家庭用气量的户用型上吸式生物质气化炉.通过对空气——水蒸气循环装置的设计，解决了现役炉型中燃气热值低、气化效率不理想的问题，提高了气化气中可燃成分含量，改善气化气品质。 由于从气化炉里面出来的粗蒸汽含有较多的焦油和水分，它们对设备和燃烧有很大影响。此文中设计了管壳式换热器及过滤净化器，用来降低粗燃气的焦油和水分，为用户提供杂质较少的清洁燃气。为物料能够均匀的参与反应，本文设计了“山”型供风器，能够保证燃气稳定产生。 关键词：户用型上吸式气化炉；储气柜；水蒸气循环装置；换热器 PAGE 3 Abstract: With the decrease of fossil fuel resources, biomass utilization is being more and more attention. Due to the household biomass gasification technology type, line is simple in structure, easy maintenance, simple and cost etc. Suitable for rural. This design taking cornstalk as material, designed a set of family can satisfy with the household biomass gasifier type, type of air, water vapor. Through the design of the device, circulating in the current low calorie gas type furnace, gasification not ideal, improve the gasification in flammable gas content, improving the quality of gas gasification. Because of the gasifier from coarse steam contains many tar and moisture, they burn on equipment and has very big effect. In this design of tubular heat exchanger and filtering purifier, used to reduce thick gas tar and moisture, to provide users with impurity less clean fuel gas. For the materials can be in uniform, this paper designs the reaction mountain for the wind, to ensure stability of gas. Key words: Household type on downdraft gasifier; gas cabinet; steam cycle plant; exchanger 辽宁工程技术大学毕业设计（论文） 目录 TOC \o 1-3 \h \z \u 1 绪论 1 1.1 引言 1 1.1.1 能源危机 1 1.1.2 环境污染 2 1.1.3 发展可再生能源的意义 3 1.2 生物质能源的开发利用 3 1.2.1 生物质的概念和来源 3 1.2.2 生物质能的主要特点 3 1.3 生物质气化技术概况 5 1.3.1 国内外生物质气化设备类型 5 1.4 户用型(小型)气化炉结构的研究现状 8 1.4.1 国外户用型(小型)气化炉的研究进展 8 1.4.2 国内户用型(小型)气化炉的研究进展 11 1.5 热解气化的原理与分类 13 1.5.1 气化原理 13 1.5.2 生物质气化技术的分类 15 1.6小结 17 2 上吸式生物质气化炉设计 18 2.2 气化炉结构形式的确定 18 2.3 生物质物料的