共查询到19条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
乙烯裂解炉是乙烯生产装置的关键设备,而乙烯裂解炉的辐射段炉管焊接质量又是乙烯裂解炉安装的难点,这里主要介绍了鲁姆斯SRT-IVHS裂解炉辐射段炉管的焊接准备、焊接材料、焊接工艺和焊接试验,掌握该种材料的焊接技术要点,以保证裂解炉辐射段炉管的焊接质量。 相似文献
11.
裂解炉设计方案的整体优化 总被引:2,自引:0,他引:2
回顾了裂解炉的发展历史并提出了大型化、绿色化的趋势;指出裂解炉大型化可以降低炉子投资并提高备用系数;裂解炉绿色化尤其是解决三废、噪音、温室效应等的设计理念可以应用到大型裂解炉的工艺设计中。通过用“整体不等于部分之和”原理分析裂解技术并指出毫秒炉、燃气轮机、高热效率等“部分”最佳的先进工艺技术在“整体”上却不是最优的设计方案,从而为裂解炉工艺优化设计提供了可持续发展和绿色化学的理论指导。裂解炉整体优化设计的思路完全可以运用在改造已建裂解炉和新建大型绿色裂解炉工程设计以及EPC和PMC中,从而使裂解工艺成为绿色的催化与环境友好的化学工艺,以进一步增加乙烯生产能力,降低裂解炉的基建投资和日常操作成本并提高企业的市场竞争力。 相似文献
12.
13.
蒋学良 《化学工业与工程技术》2003,24(2):38-40
对发生失效破裂的炉管进行了宏观形貌分析、断口形貌分析、金相分析、有限元应力分析等 ,得出导致炉管破裂的主要原因是炉管在制造过程中产生缺陷引起的应力集中和特定的腐蚀环境共同作用下产生应力腐蚀断裂。 相似文献
14.
15.
16.
Multi-objective modeling and optimization for scheduling of cracking furnace systems 总被引:1,自引:0,他引:1
Cracking furnace is the core device for ethylene production. In practice, multiple ethylene furnaces are usual y run in parallel. The scheduling of the entire cracking furnace system has great significance when multiple feeds are simultaneously processed in multiple cracking furnaces with the changing of operating cost and yield of product. In this paper, given the requirements of both profit and energy saving in actual production process, a multi-objective optimization model contains two objectives, maximizing the average benefits and minimizing the average coking amount was proposed. The model can be abstracted as a multi-objective mixed integer non-linear programming problem. Considering the mixed integer decision variables of this multi-objective problem, an improved hybrid encoding non-dominated sorting genetic algorithm with mixed discrete variables (MDNSGA-I ) is used to solve the Pareto optimal front of this model, the algorithm adopted crossover and muta-tion strategy with multi-operators, which overcomes the deficiency that normal genetic algorithm cannot handle the optimization problem with mixed variables. Finally, using an ethylene plant with multiple cracking furnaces as an example to illustrate the effectiveness of the scheduling results by comparing the optimization results of multi-objective and single objective model. 相似文献
17.
通过对裂解炉结焦机理和气-液-水三相平衡的研究,提出结焦由对流段产生结焦先兆物引起。采用新型注汽技术改造,降低结焦先兆物,使裂解炉开工率提高到96.8%以上。 相似文献
18.