天然气自热重整器模拟及性能分析

MODELING AND PERFORMANCE ANALYSIS OF GAS AUTO-THERMAL REFORMER

天然气蒸气重整是传统的合成气制造技术 ,可以用来制造氢气、甲醇、二甲醚等化工产品 ,也是天然气制甲醇燃料电池的核心技术部分。自热重整系部分氧化反应与绝热重整反应的组合 ,不需要外界提供热量而实现绝热操作。该技术采用固定床反应器 ,具有结构简单、设备投资费用低、操作费用低、操作灵活 (可以实现快速启动和变负荷 )、较大规模经济优势等优点。作者用AspenPlus建立了天然气自热重整器的模型 ,与已有工业数据的对比表明 ,该模型能够较准确地预测重整器出口状态 ;进而基于该模型 ,分析了操作参数对自热重整器性能的影响。对基于自热重整技术的合成气化工系统的设计。

Gas vapor reforming is the traditional technique of synthesis gas producing, which can make the chemicals such as hydrogen, methanol, dimethyl ether, etc., also which is the core technology of the battery with gas methanol fuel. Auto-thermal reforming (ATR) is the combination of the partial oxidation reaction and the insulation reforming reaction, which can conduct the insulation operation without outside heating. The technology uses the fixed bed reactor, which has the advantages such as simple configuration, low equipment and operating cost, flexible running (rapidly starting and changing load), and great economic advantages, etc. Using Aspen Plus, the article establishes a model of gas auto-thermal reformer. Comparing to the existing industrial data, the model can quite precisely predict the status of reformer outlet. Based on the model, the influence of the running parameters on the performance of the auto-thermal reformer is analyzed. The model is the guide for the design and the parameters choosing and optimizing of the syngas chemical system based on ATR technology.