加氢装置多源供氢系统的氢气动态平衡技术研究
Research on Hydrogen Dynamic Balancing Technology in Multi-Source Hydrogen Supply Systems for Hydrogenation Units
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- DOI:
- 作者:
- 贾延伟
Jia Yanwei
- 作者单位:
- 中国石油四川石化有限责任公司
PetroChina Sichuan Petrochemical Co., Ltd.
- 关键词:
- 加氢装置；氢气；动态平衡；应急；停工；供氢；耗氢；催化剂
hydrogenation units; hydrogen; dynamic balancing; emergency regulation; shutdown; hydrogen supply ;hydrogen consumption ; catalyst
- 摘要:
- 摘要：针对某炼化一体化企业因多源供氢系统波动，若不能有效合理地平衡多套加氢装置的平衡用氢，将导致关键加氢装置非计划停工的难题，因渣油加氢装置和蜡油加氢装置属企业炼化一体化直供料装置中的关键装置，一旦切断进料恢复时间较长，将降低公司一体化装置的整体物料加工负荷。通过系统分析多源供氢系统的供氢特点与用氢装置最低耗氢边界条件，并基于渣油加氢装置反应系统储氢特性，开发了氢气动态平衡技术。工业应用结果表明，在供氢短暂中断≤90 000 m³/h时，针对各加氢装置影响程度的不同，以及在充分考虑保护催化剂活性确定合理运行参数下，合理分配各装置用氢量，通过渣油加氢、蜡油加氢降温、降负荷与柴油加氢全循环的协同操作，维持关键装置连续运行，最大化减少氢气波动造成的损失。
Abstract: To address the challenge of unplanned shutdowns of critical hydrogenation units caused by fluctuations in multi-sourcehydrogen supply systems at an integrated refining and petrochemical complex, Due to the fact that residue hydrocracking and VGOhydrocracking are the key units in the enterprise refining and petrochemical integration direct supply material equipment, once thefeed is cut, the recovery time will be longer, which will reduce the overall material processing load of the company's integratedequipment. this study systematically analyzes the hydrogen supply characteristics of multi-source systems and the minimumhydrogen consumption boundary conditions of hydrogenation units. Based on the hydrogen storage characteristics of the residuehydrotreating unit reaction system, a hydrogen dynamic balancing technology was developed. Industrial application resultsdemonstrate that when the hydrogen supply decreases by ≤90 000 m³/h, according to the different degrees of influence of varioushydrogenation units, and after fully considering the protection of catalyst activity to determine reasonable operating parameters, thehydrogen consumption of each unit is reasonably distributed. Through the coordinated operation of residue hydrocracking , VGOhydrocracking cooling, load reduction and diesel hydrogenation full cycle, the continuous operation of key units is maintained, andthe losses caused by hydrogen fluctuations are minimized.