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首页> 外文会议>International Chemical Recovery Conference v.1; 20040606-20040610; Charleston,SC; US >Maximizing Recovery Boiler Performance with Combustion Air System Upgrades
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Maximizing Recovery Boiler Performance with Combustion Air System Upgrades

机译：通过升级燃烧空气系统来最大化回收锅炉的性能

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As pulp mills continue to demand more operating capacity from existing equipment, the recovery boiler continues to be a bottleneck in the production of pulp. The focus is to push the limits of this equipment and maximize the black liquor throughput capacity while maintaining environmental compliance. Improvements in the way combustion air is introduced into the recovery boiler has contributed directly to continuous operation at increased load conditions. Many areas of the boiler including auxiliary boiler equipment and the boiler heat transfer surface contribute to the limitations of the current boiler operation. However, the primary reason for current boiler performance limits is the combustion process and the associated air system configuration with regard to the delivery of air into the furnace. Depending on the demand for increased black liquor combustion, the level or degree of changes to the combustion air system can be determined. This is sometimes dictated by the current boiler load conditions as well as other factors affecting the current boiler operating limits. In many cases the upper operating limits have been achieved with changes involving the addition of only one combustion air level. When and where additional levels of air are introduced in the furnace to improve black liquor combustion, depends largely on the combustion air system arrangement and the current method of operation. The ability to improve black liquor combustion with enhanced air system designs offers a substantial cost benefit to the mill. This paper will review various enhancements implemented recently on combustion air systems in recovery boilers and the level of improved performance of these boilers.
机译：随着纸浆厂对现有设备的需求不断提高，回收锅炉继续成为纸浆生产的瓶颈。重点是在保持环境合规性的同时，突破该设备的极限并最大程度地提高黑液的吞吐能力。将燃烧空气引入回收锅炉的方式的改进直接有助于在增加负载条件下的连续运行。锅炉的许多区域，包括辅助锅炉设备和锅炉传热表面，都对当前锅炉的运行造成了限制。然而，当前锅炉性能极限的主要原因是燃烧过程以及有关将空气输送到炉中的相关空气系统配置。根据对增加的黑液燃烧的需求，可以确定燃烧空气系统的变化程度或变化程度。有时，这取决于当前的锅炉负载状况以及影响当前锅炉运行极限的其他因素。在许多情况下，通过仅增加一个燃烧空气水平的更改即可达到操作上限。在炉中何时何地引入额外的空气以改善黑液燃烧，很大程度上取决于燃烧空气系统的布置和当前的操作方法。通过改进的空气系统设计来改善黑液燃烧的能力为工厂带来了可观的成本优势。本文将回顾最近在回收锅炉中对燃烧空气系统实施的各种改进措施以及这些锅炉的性能改进水平。

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