炼油加热炉节能技术研究

发布时间：2018-01-16 14:23

本文关键词：炼油加热炉节能技术研究　出处：《东北石油大学》2016年硕士论文　论文类型：学位论文

【摘要】：炼油企业各类能耗总量中,约有35%左右为燃料消耗。通过提高加热炉热效率以降低燃料消耗,减少污染物排放,存在较大的经济效益和社会效益。目前,炼油厂应用最多的是管式加热炉,多以油田气、焦化干气、催化裂化干气等组成的混合气体作为燃料。因此,对燃气加热炉的节能研究工作一直被广大工程技术人员所重视。影响加热炉热效率的因素很多。本文通过建立模型加热炉,模拟不同工况下加热炉的热效率、燃料消耗的变化情况。针对燃料选择、过剩空气系数、排烟温度及助燃空气吸入温度等常见因素对加热炉的影响展开分析研究。1.通过对不同的燃料气组分的燃烧过程的助燃空气消耗水平、烟气排放热损失的情况的对比分析,得出了在其它条件不变的情况下不同的燃料组成对加热炉的热效率构成一定影响的结论,提出了在炼油厂常见燃料气组分中,优先选择不饱和烃含量较高的可燃气体作为补充燃料的建议。2.深入分析了过剩空气系数对加热炉热效率影响的影响程度,得出了不同排烟温度下不同过剩空气系数对热炉热效率变化的一般性规律。总结归纳了在运行过程中合理地降低过剩空气系的各种有效措施。结合国际、国内富氧燃烧技术的发展,对炼油工业加热炉富氧燃烧技术的应用进行了节能效果预测,并根据预测结果提出了该技术在工业应用中合理的富氧空气氧含量控制范围。3.通过模拟计算,对比了排烟温度的变化对加热炉热效率的影响以及燃料消耗水平变化的一般规律,实现了不同排烟温度下的热效率变化及燃料消耗水平的准确预测。概括总结了限制排烟温度进一步降低的烟气露点腐蚀问题的主动措施和被动措施。4.对比分析了不同的助燃空气吸入温度下加热炉热效率及燃料消耗量的变化规律,得出了助燃空气吸入温度对热效率影响不大,但对燃料消耗水平影响较大的结论,并提出了高纬度地区炼油厂可以充分利用其它低温余热加热助燃空气的建议。
[Abstract]:The total energy consumption of all kinds of oil refining enterprises, about 35% for fuel consumption. By improving the heat efficiency of the heating furnace to reduce fuel consumption, reduce emissions of pollutants, has great economic and social benefits. At present, the refinery is the most widely used pipe type heating furnace in oil, gas, coking gas, mixed gas the FCC dry gas as fuel. Therefore, energy-saving work of gas heating furnace has been the majority of engineering and technical personnel attention. Many factors affecting the heat efficiency of the furnace. In this paper, through the establishment of simulation model of heating furnace, thermal efficiency under different working conditions of the heating furnace, changes in fuel consumption. The fuel of choice the excess air coefficient, flue gas temperature and combustion air into the common factors such as temperature effect on heating furnace was researched by.1. on different sets of fuel gas combustion process of combustion air A contrastive analysis of the consumption level, the heat loss of flue gas emissions, the fuel different under the same condition. The thermal efficiency of heating furnace which will influence the conclusions presented in the refinery of common fuel gas components, preferred unsaturated hydrocarbon containing high amount of combustible gas as fuel the proposed.2. in-depth analysis of the influence of excess air coefficient on the heat efficiency of the furnace, the general regularity of furnace heat efficiency change of different excess air coefficient of different exhaust temperature. Summarizes all kinds of effective measures to reasonably reduce the excess air during operation. Combined with the international and domestic development of oxygen the combustion technology, the energy-saving effect of prediction of the application technology of heating furnace with oxygen enriched combustion of the oil refining industry, and puts forward the technology in industrial application is reasonable according to the forecasting results The oxygen enriched air oxygen content control range of.3. by simulation, general rules of effect change of flue gas temperature of the heating furnace thermal efficiency and fuel consumption levels, to accurately forecast the thermal efficiency changes and fuel consumption levels under different exhaust temperature. Summarized the comparison of.4. active measures of flue gas dew point corrosion problem to further reduce the exhaust gas temperature and passive measures analysis of combustion air suction efficiency and variation of different heating temperature of fuel consumption, the combustion air temperature had little effect on the thermal efficiency, but the influence on the consumption level and put forward the conclusion of fuel, oil refinery in high latitudes can other low temperature heat the combustion air use.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE963;TE683

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