Optimization of the combustion of biomass in a commercial furnace - CFD 3D simulation

生物质燃烧是一项不断增长的业务，用于产生热量和电力。这是一项非常有吸引力的技术，因为与石油和天然气燃料相比，它以更便宜的价格提供能源，并且向大气中排放的污染物更少。 顾名思义，燃烧系统使用可再生燃料，如森林和农业残留物。 Biovalco Inc.，是一家总部位于温尼伯的加拿大公司，正在逐步增加其在这一能源市场的份额。 Biovalco的最终目标是优化其系统的设计，以提高其效率，同时提高其燃烧各种固体燃料/原料的能力。迄今为止，由Biovalco Inc.该公司已成功地燃烧了许多原料，如木屑，木屑和农业残留物（秸秆，亚麻碎片）与其链条炉排加煤机设计。然而，为了使燃烧系统的设计达到其最佳性能，仍有几个挑战需要克服。例如，含水量较高的木材燃烧效率不如含水量较低的木材，大麦秆由于其化学性质，比小麦秆形成更多的熟料。最成功的生物质燃烧的关键一直依赖于原料的一致性。在选择原料时，必须考虑所有这些因素。此外，使用不适当的材料或错误的混合物将对燃烧效率产生不利影响。

Biomass combustion, which is a growing business, is used to generate heat and power. It is a very attractive technology because it provides energy at cheaper price compared to oil and gas fuels and also emits fewer pollutants into the atmosphere. As the name implies, the combustion system is fired using renewable fuels such as forest and agriculture residues. Biovalco Inc., which is a Canadian company headquartered in Winnipeg, is gradually increasing its share in this energy market. The ultimate goal of Biovalco is to optimize the design of their system in order to increase its efficiency while improving its capability to combust a variety of solid fuels/feedstock. To date, the biomass combustion system developed by Biovalco Inc. has been successful in combusting a number of feedstock such as woodchips, wood pellets and agricultural residues (straw, flax shives) with its chain grate stoker design. However, there are still several challenges to overcome in order to bring the design of the combustion system to its maximum best performance. For example, wood with higher moisture content will not burn as efficiently as wood with lower moisture content, and barley straw will cause more clinker formations than wheat straw because of its chemical properties. The key to the most successful biomass combustion has always relied on the consistency of the feedstock. All of these factors have to be considered when selecting feedstock. In addition, using improper materials or wrong mixture will have detrimental impact on the efficiency of the combustion.