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国内酮苯装置经过不断改造、创新,其工艺、设备和仪表控制水平有了较大提高,虽然不同炼厂的酮苯装置加工的原料不同、生产方案不同,但在安全气回收、滤液循环,结晶与冷冻的匹配方面基本相同,可以采用撬装形式的活性炭纤维吸附装置,对安全气中的丁酮和甲苯进行回收,降低溶剂消耗,实现达标排放;采用脱蜡和一段脱油的高、中部滤液进行循环回用,降低总的新鲜溶剂稀释比,最终降低装置能耗和回收冷量;采用以氨压机组提供的冷量来确定装置处理量为主的生产操作模式,并在质量控制上实现卡边操作,装置电耗最大降幅29.76%,最小降幅4.01%。以上技术无需大的投资,建设期短,效果显著,装置能耗可降低25.70kg标油/t原料,混合溶剂消耗可降低0.90kg/t原料。装置在技术改造,或短期小修时,建议应用这些降低溶剂消耗、节约能耗和改善操作环境的新技术。
After the constant reform and innovation of the domestic ketone-benzene unit, the control of its technology, equipment and instruments has been greatly improved. Although the raw materials for the processing of the ketone-benzene unit in different refineries are different and the production schemes are different, in the recovery of the safety gas, the circulation of the filtrate, Crystallization and freezing match basically the same, you can use the form of skid mounted activated carbon fiber adsorption device, butanone and toluene in the safety gas recovery, reduce solvent consumption and achieve discharge standards; using dewaxing and a period of dehumidification of high, Central filtrate was recycled to reduce the total fresh solvent dilution ratio, and ultimately reduce the unit energy consumption and recovery of cold; the use of ammonia to provide cooling capacity to determine the unit capacity of the main production operation mode, and the quality Control to achieve the card side of the operation, the largest decline in device power consumption 29.76%, a minimum decrease of 4.01%. The above technology does not require large investment, short construction period, the effect is significant, the unit energy consumption can be reduced 25.70kg standard oil / t raw materials, mixed solvent consumption can reduce 0.90kg / t raw materials. When retrofitting or short-term fixtures, it is advisable to use these new technologies to reduce solvent consumption, save energy and improve the operating environment.