民用燃气加臭工艺技术适应性探讨

THE ADAPTABILITY OF ODORIZING TECHNOLOGY IN FUEL GAS FOR CIVIL USE

民用燃气加臭是安全供气的必要措施,我国《城镇燃气设计规范》(GB50028-2006)中明确规定城镇燃气应进行加臭。民用燃气加臭工艺技术在西南地区运用尚不十分广泛。针对重庆市万盛、南川两地民用燃气加臭装置,从选型及运行状况等方面着手,通过对加臭装置手动及自动加注量、加注浓度的对比分析,发现现有民用燃气加臭装置手动加注中存在的加注量过大、浓度不稳定等不足,提出手动加臭程序分时段设定的改进建议,以有效地减少手动加注量,减少加臭剂的浪费,降低加臭成本,并对民用燃气加臭装置应用中如何控制好装置选型及自动控制两个关键点进行了探讨,为民用燃气加臭工艺技术的推广应用与改进提供参考。

The odorizing is a necessary step in supplying gas safely for urban citizens,and so this is one term of stipulated regulations being obviously described in GB50028-2006,National Standard on Design Codes of Urban Fuel Gas.However,the odorizing technology is not popular in southwest China areas.Taking two odorizing devices in Wansheng and Nanchuan respectively of Chongqing city as cases of study,comparison analysis was carried out on the concentration and filling-up quantity between manually operation and automatic operation.Results show that many shortcomings exist in manual operation,e.g.,either there will be filled up too much or the concentration is not steady.This paper suggests that the manual operation should be performed according to different times so as to reduce the waste of odorizer,device type option and automatic control should be thought highly when selecting the odorizing device.These proposals will provide references for designers to improve the odorizing device or promote the application of this technology.