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扬子石化0.8Mt/a延迟焦化装置由于建成较早,加工工艺落后,2011年综合能耗达到23.04kg标油/t。结合装置特点,实施燃料气、蒸汽及用水节能措施。燃料气降耗方面,对达到使用年限的加热炉空气预热器热管进行部分更换,加热炉效率由90%提高至92%;使用气体脱硫装置的富余0.5MPa蒸汽作为热源,对燃料气进行加热,减少燃料气实际耗量5.16%。蒸汽节能方面,利用富余0.5MPa蒸汽替代1.0MPa蒸汽,节省1.0MPa蒸汽用量5.11t/h;随着装置凝结水回收项目的竣工,计划改用凝结水替代部分大吹汽蒸汽;同时,现场消除蒸汽漏点,更换腐蚀、减薄的碳钢管线,将其材质升级为不锈钢。节水方面,使用硫回收净化污水替代工业水,节省工业水用量7000t/a;拟将装置各点排放的凝结水集中回收,补入装置除氧罐或放水罐,进一步节省工业水用量。上述措施的实施,使装置能耗由2012年的22.93kg标油/t降至2013年的21.25kg标油/t,降幅达7.3%。
Yangzi Petrochemical 0.8Mt / a delayed coking unit as built earlier, the processing technology behind the 2011 comprehensive energy consumption reached 23.04kg standard oil / t. Combined with the characteristics of the device, the implementation of fuel gas, steam and water energy conservation measures. In terms of fuel consumption, the partial replacement of the heating pipe air preheater heat pipe that reached the end of its useful life was carried out by increasing the efficiency of the heating furnace from 90% to 92%. Using the excess 0.5MPa steam from the gas desulfurization unit as a heat source, the fuel gas was heated , Reducing the actual fuel consumption of 5.16%. Steam energy savings, the use of surplus 0.5MPa steam instead of 1.0MPa steam, saving 1.0MPa steam consumption 5.11t / h; with the completion of the project condensate recovery project, plans to use condensed water to replace some of the big blow steam; the same time, on-site elimination of steam Leak point, replace the corrosion, thinning of carbon steel pipelines, the material upgraded to stainless steel. Water saving, the use of sulfur recovery of sewage water instead of industrial water purification, saving industrial water consumption 7000t / a; to be condensed at various points of the device will be concentrated recovery of water, added to the device deaerator tank or drain tank, further saving industrial water consumption. The implementation of the above measures reduced the energy consumption of the unit by 7.3% from 22.93 kg of standard oil / t in 2012 to 21.25 kg of standard oil / t in 2013.