硫酸法烷基化装置节能降耗措施

对中国石化洛阳分公司200 kt/a硫酸法烷基化装置的生产能耗进行了分析，并针对装置蒸汽、循环水以及除盐水能耗高的问题提出相应节能降耗措施。通过对压缩机转速、脱异/正丁烷塔回流量及脱轻烃塔进料工艺流程优化，节省3.5 MPa蒸汽11.75 t/h，节省1.0 MPa蒸汽5.32 t /h，降低蒸汽能耗3 334.09 MJ/t；通过停止部分采样器/冷却器循环水供应并及时控制调整各设备用水量，可节约循环水119.55 t/h，降低能耗16.63 MJ/t；通过对空气冷却器、碱液罐及各机泵冲洗所用除盐水的控制调整，可节约除盐水1.58 t/h。通过以上节能措施的实施，装置累计降低能耗3 354.38 MJ/t，创效3 409.47万元/a，并为装置进一步节能降耗提供了技术支撑。

MEASURES FOR ENERGY SAVING AND CONSUMPTION REDUCTION IN SULFURIC ACID ALKYLATION UNIT

The energy consumption of 200 kt/a sulfuric acid alkylation unit in SINOPEC Luoyang Company was analyzed, and the corresponding measures for energy saving and consumption reduction were put forward in view of the large energy consumption of steam, circulating water and desalinated water in the unit. Through optimizing the compressor speed, the flow rate of isobutane and n-butane removal column and feed process of light hydrocarbon removal column, the total saving of 3.5 MPa and 1.0 MPa steam was 11.75 t/h and 5.32 t/h, respectively. The steam energy consumption was reduced by 3 334.09 MJ/t. By shutting down the circulating water supply of some sampler and cooler and adjusting the water consumption of each equipment in time, the circulating water quantity was saved by 119.55 t/h, and the energy consumption was reduced by 16.63 MJ/t. Through the adjustment of the desalinated water used in the washing of air cooler, alkline tank and all pumps, the demineralized water was saved by 1.58 t/h. Through the implementation of the above energy saving measures, the total energy consumption for the unit was reduced by 3 354.38 MJ/t, and the economic benefit was 34.0947 million Yuan/a