CAJ | 학술논문

采用吉布斯自由能热力学平衡算法，建立了催化裂化装置烟气析碳反应模型，该模型验证了析碳发生的可能性，其计算结果与生产实际相吻合。结合典型实际生产工况，利用该模型分别考察了烟气温度、压力、空气配比、水蒸气配比和氧气含量等对烟气碳析模型中析碳量的影响。计算结果表明：烟气温度300℃～550℃容易发生析碳，增大空气配比可以显著减弱析碳反应的发生，烟气压力在0 MPa～0.32 MPa、水蒸汽含量在0 wt%～8 wt%范围内对于析碳无显著影响。
채용길포사자유능열역학평형산법，건립료최화열화장치연기석탄반응모형，해모형험증료석탄발생적가능성，기계산결과여생산실제상문합。결합전형실제생산공황，이용해모형분별고찰료연기온도、압력、공기배비、수증기배비화양기함량등대연기탄석모형중석탄량적영향。계산결과표명：연기온도300℃～550℃용역발생석탄，증대공기배비가이현저감약석탄반응적발생，연기압력재0 MPa～0.32 MPa、수증기함량재0 wt%～8 wt%범위내대우석탄무현저영향。
Gibbs free energy minimization method for thermodynamic equilibrium are used to model carbon precipitation in flue gas of fluid catalytic cracking unit The model verified the probability of the carbon precipitation The actual production data have proved the calculation The temperature, pressure, air-flue gas ratio and steam-flue gas ratio were studied under the operation range The results show that flue gas will be vulnerable to precipitate carbon when the temperature between 300 ℃ to 550 ℃ The air-flue gas ratio effect is remarkable to the carbon precipitation While the effects of other operation condition such as steam-flue gas ratio and the pressure are slight