为有效降低中央工艺空调能耗,采取多维措施,如节能操作理念、技术改造、完善工艺系统、特色培训、精益管理及精准保供平台构建等9个方面.该节能多维攻关模式,对烟草行业及其他行业工艺空调的节能降耗具有借鉴意义.

By analyzing the nicotine content in cut tobacco and cigarette smoke,the nicotine transfer rate was calculated,and the relationship between nicotine transfer rate and smoke nicotine content was studied.The results showed that the amount of smoke nicotine had relation not only to the nicotine content in cut tobacco,but also closely to the nicotine transfer rate.When the nicotine content in cut tobacco was constant,there was a negative correlation between smoke nicotine content and nicotine transfer rate.

It was found that the performance of cylinder cut tobacco dryer become worse.The moisture content of output tobacco fluctuated beyond the tolerance of standard deviation 0.17%.By analyzing the steam and drainage pipelines in the dryer,the fault was attributed to the wear of rotary packing gland.Therefore, the internal diameter of compression nut was enlarged and a compression spring added to keep the packing always in a tightly compression state and prevent steam from leaking into cycling water pipeline.After improvement,the standard deviation of output moisture content reduced from 0.26% to 0.12%,the fluctuation of steam pressure and cycling water temperature decreased obviously,and 527 tons of steam and $68.5 thousand were saved per year.

In view of the lower temperature process capability during the strips casing and cylinder conditioner's working,it's electric control system was improved.The chamber temperature control circu it from the traditional PID control to a sub-control+traditional PID control,pre-chamber temperature control loop was added,the circuit compensation steam changes manual control from to automatic control.The result proves the temperature process capability index improves from 0.82 to 1.5,preheating time decreases from 40 min to 20 min,and it can save electric energy 4 458 kW and steam 575 t every year.