共查询到18条相似文献,搜索用时 140 毫秒
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乙烯裂解炉空气预热器改造 总被引:2,自引:0,他引:2
为了减少燃料气消耗,采用乙烯装置急冷水的富余热量对裂解炉空气预热,并对兰州石化460 kt/a乙烯装置裂解炉进行了改造,在裂解炉底部空气入口安装空气预热器.通过对比空气预热器投用前后的相关数据得出,该装置燃料气单耗降低了3 kg/t,每年产生经济效益414万元. 相似文献
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裂解炉空气预热技术在燕山乙烯装置上的应用 总被引:4,自引:0,他引:4
介绍了燕山乙烯装置裂解炉空气预热器的预热技术、节能原理及运行。通过对比空气预热器投用前后裂解炉运行状况,得出结论:空气预热器在裂解炉上的应用能使裂解炉炉膛内温度分布得到改善,节约燃气用量,烟气量减小,排烟温度降低,达到节能降耗的目的。 相似文献
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针对广州乙烯裂解炉建设早,存在技术落后、能耗高、与现有裂解原料不匹配等问题,从设计、工艺运行及新技术应用等方面进行分析,同时结合以往装置节能改造情况,对裂解炉目前存在的在节能降耗方面突出问题,主要围绕如何降低裂解炉燃料、蒸汽消耗及电力消耗等提出再优化裂解炉空气预热器热源、改造风机、降低排烟温度等措施,降低裂解炉动力消耗。优化措施实施后,能降低裂解装置能耗(标油)10 kg/t乙烯以上。 相似文献
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Based on a typical gas composition from a methanol-to-propylene(MTP) reactor, and guided by a requirement to recover both propylene and ethylene, three separation strategies are studied and simulated by using PROII package. These strategies are sequential separation, front-end dethanization, and front-end depropanization.The process does not involve an ethylene refrigeration system, using the separated stream as absorbent, and absorbing further the medium-pressure demethanization, and a proprietary technology by combining intercooling oil absorption and throttle expansion. Influences of different process streams as absorbent are studied on energy consumptions, propylene and ethylene recovery percentages, and other key-performance indicators of the separation strategies. Based on a commercial MTP plant with a methanol capacity of 1700 kt·a~(-1), the simulated results show that the front-end dethanization using the C_4 mixture as absorbent is the optimal separation strategy, in which the standard fuel oil consumption(a key-performance indicator of energy consumption) is18.97 kt·h~(-1), the total power consumption of two compressors is 22.4 MW, the propylene recovery percentage is 99.70%, and the ethylene recovery percentage is 99.70%. For a further improvement, the pre-dethanization and thermal coupling methods are applied. By using front-end pre-dethanization(partial cutting) with debutanizeroverhead, i.e. the C_4 mixture, as absorbent, the power consumption of the compressors decreases to 19.9 MW, an 11% reduction compared with the clear-cutting method. The energy consumption for the dual compressors for crude gaseous product mixture and main product propylene refrigeration is 16.69 MW, 16.55% lower than that of the present MTP industrial plant with the same scale, and a total energy consumption of 20 MW for the triple compressors including product gas mixture compression, and ethylene and propylene refrigeration. 相似文献
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介绍了天津乙烯装置裂解炉节能减排管理及具体实施措施。通过优化工艺调整,减少燃料气、锅炉给水、蒸汽、电能等能源消耗,达到了挖潜增效的目的。 相似文献
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针对扬子乙烯装置能耗现状,分析了装置的节能降耗潜力,提出对应的措施。重点在于提高乙烯收率,降低乙烯损失,减少燃料、蒸汽和水的消耗。 相似文献
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介绍天然气转化和气煤联产氢碳互补制乙二醇合成气的工艺原理。对天然气部分氧化和气煤联产乙二醇合成气的工艺流程、原料消耗、CO2排放、动力消耗、投资、经济性进行比较。提出气煤联产和天然气部分氧化都是可行的乙二醇合成气生产路线。气煤联产有氢碳互补作用,水煤气无需变换,天然气消耗和氧耗低;天然气部分氧化流程简单、投资省、CO2排放少。经济比较,两种原料路线相差不大。 相似文献
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针对乙烯裂解炉的控制问题,提出了一种鲁棒性较强的先进控制策略,该方法有效地解决了裂解原料组分和燃料气热值波动对裂解炉裂解气出口温度的影响,实现裂解气出口温度和裂解炉加工总量的精细化控制,优化控制器可一键投运和切除,解决了裂解炉控制问题的复杂性。该方法成功应用于兰州石化460kt/a乙烯装置,提高了装置的平稳率,提升了双烯及碳四等产品的收率。 相似文献
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200 kt/a乙烯裂解装置改造效果分析 总被引:3,自引:0,他引:3
中国石油化工股份有限公司广州分公司化工一部乙烯装置于2003进行了技术改造,从装置负荷、裂解炉的操作条件、产品收率、原料规格、能耗及环保指标对装置进行了标定,并总体评价装置的改造效果。改造后该装置仍存在几个问题:裂解炉数量不足、急冷水乳化、燃料气系统及蒸汽不平衡、循环水能力不足、丙烯塔损失大。改造后各项经济技术指标基本能达设计要求 相似文献