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结合邯宝焦化厂生产实际,分析了粗苯蒸馏工序管式炉加热富油存在的问题以及焦炉煤气资源、环保因素等对管式炉运行造成的影响,介绍了富油加热工艺的改造,即以干熄焦自产中压蒸汽为热源的富油加热器,替代以焦炉煤气为燃料的管式炉。生产实践表明,改造后吨苯洗油消耗由62 kg降至57 kg,且缓解了公司焦炉煤气资源紧张局势,年可节约能源消耗费用约600万元,省去了管式炉尾气脱硫脱硝装置投入,提升了安全生产水平,经济效益和环保效益显著。 相似文献
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我厂粗苯生产采用管式炉过热蒸汽法,富油被加热至180℃左右,去脱苯塔脱除粗苯后循环使用,在循环热油中(管式炉后)取占循环油量1-1.5%的洗油送入再生器,在此用过热直接蒸汽再生,生成含苯洗油蒸汽送脱苯塔底部,残留在再生器底部的热残渣油排入残渣油槽,定期加热后送入焦油贮槽(粗苯排渣系统工艺流程如图-1)。 相似文献
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管式炉是粗苯工段用于富油脱苯的关键设备,根据加热方式的不同可分为对流段和辐射段。主要作用有两方面:一方面是将富油由120~130℃加热到180℃;另一方面将低压蒸汽由142℃加热到400℃以上。在富油脱苯过程中,预热富油和蒸汽,有效降低煤气消耗。 相似文献
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焦化厂粗苯蒸馏系统一般采用管式炉加热双塔脱苯工艺,由于焦炉煤气处理量由2.5万m^3/h提高到6万m^3/h,原来的蒸馏系统不能满足新的要求,对原工艺进行了改进;富油田一段油换热改为二段油换热,即节省了煤气耗量、冷却水用量,又可缓解冷却设备的结垢。 相似文献
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概述了在聚酯工艺塔装置中增加板式换热器,利用塔顶蒸汽制取热水,再将热水进行综合利用。系统运行后,热水型制冷机每月可节约用电121.88万度;浆料配制过程每天可节约1.64×107k J能耗;长丝空调每天可节能7.4 t标煤的发热量。 相似文献
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Arnold M. Gavin Ralph W. Berger 《Journal of the American Oil Chemists' Society》1973,50(11):466A-472A
With continuous deodorizers of the double shell type most of the steam normally used to preheat the feedstock in the deaerating
section can be saved by a modification-the essential feature of which is the addition of a heat recovery section location
between the final deodorizing section and the cooling section, by means of which heat is transferred from the hot deodorized
oil to the feedstock. Consistent with the principles of the original design, no pumping or piping of hot oil outside the deodorizer
is required. Continuous deodorizers of the stripping tray type can be modified for “steam refining” or “stripping” of high
free fatty acid palm oil to reduce the free fatty acid palm oil to reduce the free fatty acids to 0.03% max. This is accomplished
by means of additional trays in the stripping sections of the deodorizer. The capacity, sparge steam temperature, vacuum and
retention time remain the same as with normal deodorization.
Presented at the JOCS-AOCS Joint Meeting, New Orleans, April 1973 相似文献
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对20万t/a PVC生产装置进行了挖潜改造和能源优化配置,采取了氯化氢合成炉余热蒸汽利用、离心母液热量回用、干燥蒸汽冷凝水回用、干燥螺旋输送器安装变频装置等节能措施。该节能降耗措施实施后,水、电、蒸汽等单耗有了明显下降,生产1tPVC耗纯水5.0t、耗电521kW.h、耗蒸汽0.78~0.88t,节约资金约1 358万元/a。 相似文献
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The pulp and paper sector is the fourth largest industrial sector in terms of energy use in the world. Of the numerous processes involved in paper-making by a paper machine, the dryer section is the process that consumes the largest amount of energy. A model-based method for estimating energy-saving potentials of the dryer section was put forward in the present study. It was done by four steps: establishing a mathematical model about energy consumption, determining the model parameters, benchmarking the drying performance to obtain the corresponding energy-saving measures, and estimating the energy-saving potentials by using the mathematical model. In a case study, a multi-cylinder dryer section was selected to illustrate the method. After a fundamental field test and observation, several operating problems that restricted the energy performance of paper drying were found. And then several reasonable energy-saving measures were suggested to the operators. Finally, applying the mathematic model, it was found that 0.32 ton of steam will be saved when producing 1 ton of paper in recommended operating conditions. With the designed capacity of 200,000 tons/year, the annual steam-savings will be 64,000 tons. Generally, the price of steam is 130–150 Chinese Yuan (about US$21–24) in China, and the annual economic benefits will be 8.32–9.60 million Chinese Yuan (about US$1.344–1.536 million). 相似文献
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通过对现有工艺的分析,结合系统的生产特点,对氨硫系统生产过程中的夹套退汽改进设计,在保证正常生产的情况下,小时节约中压蒸汽1.1t,取得了较好的经济和社会效益。 相似文献
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介绍了煤气终冷和洗脱苯工艺的生产现状,针对现行工艺存在塔阻波动大,吨苯耗蒸汽、洗油较高,洗油质量差,洗苯效果差,管式炉油管腐蚀严重等问题,提出了加强冷凝液的喷洒,降低塔阻,增设富油缓冲槽及浮漂式液位计,油油换热器改串联为并联,加强生产操作等方面的改进措施。改造后,提高了粗苯回收率,降低了洗油消耗,稳定了粗苯生产。 相似文献
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作者从理论上探讨了高低温合成釜的供热均由热煤炉来完成的可行性,并对导热油从高温(543K)降至低温(433K)所需的换热器进行了选择。给出了供热系统工艺改进后的工艺流程图。计算出采用作者设计的新的供热工艺,每年可节约能耗约4.5万元,折合煤约300t。 相似文献
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概述了过热蒸汽对烧碱蒸发的危害,和采取特殊方式的增湿减温措施取得的良好效果:汽耗由5.1t/t降到3.8t/t,节汽约1万t/a,节约资金50万元/a,产量得到很大提高,使烧碱的运行状态得到改善。但仍存在一定问题尚需改进。 相似文献