表面蒸发式冷凝器在化工装置中的应用分析

发布时间：2018-04-04 05:10

本文选题：空冷器　切入点：散热计算　出处：《东北石油大学》2017年硕士论文

【摘要】：表面蒸发式冷凝器与传统的水冷式和风冷式换热器相比,其结构紧凑,占地面积小,传热效率高,节水节能,操作稳定,在石油化工、电力、冶金等行业具有广阔的应用前景。本论文对大庆石化公司化工一厂E1装置EH-353B空冷器改造项目研究,通过校核该设备的散热能力,得出了改造前空冷器与改造后表面蒸发式冷凝器换热能力的差别,为化工行业冷却系统的空冷器在类似环境中的合理选型和结构优化提供了依据,具有较大的工程应用价值。本论文主要完成的工作如下:对比化工一厂E3装置固定管板冷凝器,以及E1装置EH-353B改造前后的冷凝器的换热原理及结构,分析各自的优缺点;设计对样机EH-353 4#冷凝器标定方案,通过标定检验工业样机的传热性能、设备减重、电耗及水耗等各项技术经济指标是否达到设计要求;原EH-353B制约化工一厂E1装置的生产能力,主要表现在空冷制冷量不足;喷淋水消耗量大,并且无法回收,影响装置环境影响评价;设备运维成本高等问题,改造完成后,收集生产数据进行前后对比是否解决上述问题;表面蒸发式冷凝器投入生产后,换热管出现裂纹发生泄漏,对裂纹换热管分析发生机理,总结裂纹出现原因并提出解决问题意见;结合实际生产总结表面蒸发式冷凝器日常维护保养注意事项。
[Abstract]:Water-cooled and air-cooled surface evaporative condenser and the traditional heat exchanger compared to its compact structure, small occupied area, high heat efficiency, energy saving, stable operation, power in the petrochemical, metallurgical and other industries, and has broad application prospects. The research of Daqing Petrochemical Co E1 EH-353B chemical plant equipment air cooler renovation project, through the heat dissipation capability of checking the equipment, the transformation of the former air cooler and reformed surface evaporative condenser heat capacity difference, provide the basis for reasonable selection in similar environments and structure optimization of air cooling system in the chemical industry, it has great application value in the thesis. The work done as follows: comparison of chemical plant E3 device fixed tube plate of condenser, and the condenser device before and after E1 EH-353B transformation of the heat transfer principle and structure, analyses the advantages and disadvantages of the design; EH-353 4# condenser calibration scheme, through the calibration test of heat transfer performance of the industrial prototype equipment, weight loss, power consumption and water consumption is the technical and economic indicators to meet the design requirements; the original EH-353B control chemical plant E1 unit production capacity, mainly in the air cooling refrigeration capacity is not enough; the spray water consumption, and can not be recovered evaluation of environmental impact, impact device; high equipment maintenance cost, after the completion of the transformation, whether to collect the production data and comparison to solve the above problems; the surface of the evaporative condenser into production after heat exchange pipe crack leakage, heat transfer mechanism analysis on crack pipe, summarize crack reason and put forward to solve the problem of opinion; the actual production surface evaporative condenser daily maintenance precautions.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ051.61

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