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- Results showed that modification with MgO and CeO_2 was favor to disperse nickel species and suppress coke deposition. 结果表明;MgO、CeO2修饰SiO2后有助于镍的分散;载体表面的酸性降低有助于减少积炭.
- The diluent,such as toluene,was an inhibitor of coke deposition on HZSM-5 zeo-lite catalyst surface. 甲苯之类的稀释剂是邻氯甲苯常压异构化中 HZSM-5沸石催化剂表面结焦的抑制剂。
- In supercritical reaction, coke deposition can be reduced by supercritical fluid and life of catalyst is prolonged. 在超临界条件下，超临界流体能够抑制催化剂积炭，延长催化剂寿命。
- It is shown that the acid sites of the zeolites play an important role on coke deposition. 酸强度越高,越容易积炭,酸量越大积炭越多。
- The coke deposition behavior of hydrocracking catalyst has been studied using TG and microreactor. 用热分析技术和反应色谱等手段及催速老化法对加氢裂化催化剂的积炭行为进行了研究。
- The kinetics and mechanism of coke deposition on cracking catalysts are reviewed and a kinetic model of coke deposition is presented. 本文提出了催化剂上结焦的动力学模型。
- Coke deposition on HZSM-5 and Pt/HZSM-5 in xylene isomerization has been studied by temperature desorption oxidation, The evaluated results show that the. 用程序升温氧化技术研究了二甲苯异构化反应在HZSM-5和pt/HZSM-5上的积炭行为。
- In this model, the process of coke deposition is divided into three steps: the first layer formation, the multi-layers formation and the plugging of pores. 此模型认为结焦过程可分为三个阶段:单层结焦、多层结焦及微孔堵塞。
- The deactivation of catalyst for propene hydration etherification was discussed in three aspects: coke deposition, loss of the modifier as well as hydrothermal condition. 从积炭、改性剂流失和水热效应3个方面探讨了丙烯水合醚化催化剂的失活原因。
- The retention volumes of benzene are measured on five cracking catalysts with different contents of coke deposit, and the five lines of log V_g-1/T are obtained. 测定了苯在五种积炭量不同的催化裂化衰化系列催化剂上的保留体积,发现它们的logV_g对1/T直线有一共同交点。
- Moreover, new structures of the riser reactor ends can also suppress the coke deposit on the FCC unit so that the on-stream period of the unit can be prolonged. 此外新型提升管反应器端口结构还可以抑制设备结焦,延长流化催化裂化(FCC)装置的开工周期。
- The behavior of coke formation of benzene on AF-5 zeolite was studied using a differential reactor. Rate equation of coke formation and correlations between amount of coke deposition, reaction time and partial pressure of benzene were established. 本文采用微分反应器研究苯在AF-5分子筛催化剂上的结焦规律,在试验范围内得到了结焦速率式,结焦量与反应时间和苯分压的关联式。
- The catalytic activity raises with increasing the aluminum content inthe zeolite. The progressive deactivation of the catalyst is due to the coke deposition on thesurface of ZSM-5 zeolite. 实验结果表明:催化剂活性随着铝含量的增大而增加,催化剂的逐步减活是由于ZSM-5沸石表面结焦所致。
- A review is presented on various aspects of studies on MTO reaction over SAPO 34.The contents of this article include MTO reaction mechanism,Kinetics,coke deposition studies and comments on MTO technology development. 综述了SAPO 34分子筛上进行的MTO反应机理、反应动力学和反应过程中的积炭研究。
- The results of commercial application of CB-8 catalyst showed that the aromatics conversion reached 125wt% at WAIT 495C and the loss in activity was equivalent to 2C with only 5.55wt% of coke deposition after 317 days in operation. 1991年开始工业应用;结果表明;平均入口温度495C;芳烃转化率达125w%25;运转317天活性损失2C左右;积炭仅5.;55w%25;完全达到或超过中型试验结果。
- The review of coke deposition studies include formation mechanism,the effect on MTO reaction,the methods for deferring coke deposition,the Kinetics model of coke deposition formation and regeneration by burning coke etc. 反应过程中的积炭包括积炭生成机理、积炭对MTO反应的影响、延缓积炭的方法、积炭动力学模型、烧炭再生等内容
- Three coke distribution cases by bell are investigated,the coke shape formed during coke deposit under the condition of different material depth is studied in experimental and theoretical aspects. 考察了3种料钟布料情况,从实验和理论两个方面对不同料线深度条件下焦炭堆积形成的料面形状进行了研究。
- The results showed that the coke deposited on the catalyst was mostly unsaturated hydrocarbons and mainly deposited into the micropores of the zeolite. 结果表明:催化裂化汽油裂化生成焦炭的组成主要为不饱和烃,主要沉积在催化剂的微孔内。
- The improved micro-reactor evaluation unit increased accuracy of feeding weighing, decreased fluctuation of system, prevented coke deposit and improved stability of reaction controll... 改进后的微反应评价装置,提高了进料计量的准确性,减少了系统波动;防止积炭;增加了反应控制的稳定性。
- Coke deposits on Pt-Sn/Al_2O_3 reforming catalysts and those on the wall surface of the reactors were studied by using TGA, TPO, XRD, HNMR, C-C-MS, SEM and TEM tests. 对连续重整催化剂上生成的焦炭和反应器壁上的结焦,进行了TGA、TPO、XRD、HNMR、GC-MS、SEM、TEM等测试。
