摘要
指出了中国石油哈尔滨石化分公司1.2Mt/aRFCCU焚烧式CO余热锅炉存在的问题,通过热力和烟道阻力计算,增设旁通烟道和省煤器,以及选用XD-2000型脉冲燃气吹灰器等改进措施,提高了CO余热锅炉的蒸汽产量、烟气能量回收能力和锅炉热效率,满足装置在高负荷下烟气全部并入余热锅炉的要求,按目前15%再生烟气旁通排放,即排放烟气量为20000m3/h计算(420℃,CO含量6%),其热能回收为21.06×106kJ/h;装置能耗降低了29.3×104kJ/t,新增经济效益约800万元/a,节能效果明显。
Enumerated were the problems existing in a 1.2 Mt/a RFCCU incineration-type CO heat recovery boiler of Harbin Petrochemical Sub-company affiliated to China Petroleum Corporation.Following a thermal and flue duct resistance calculation,a variety of improvement measures,such as additional provision of a bypass flue duct and an economizer as well as the use of a XD-2000 type gas impulse soot blower,were implemented.They have enhanced the steam output,flue-gas energy recovery capacity and thermal efficiency of the CO heat recovery boiler,thus meeting the demand of a plant exhausting at high loads all the flue gas into the heat recovery boiler.If the current 15% of regenerative flue gas is exhausted through a bypass,i.e.the flue gas discharge quantity being assessed at 20 000 m3/h (420 ℃ and CO content 6%),the thermal energy recovered shall be 21.06×106 kJ/h.The energy consumption of a cracking plant can be decreased by 29.3×104 kJ/t,equivalent to newly accrued economic benefits of about RMB 8 million yuan per year.This represents a significant energy-saving effectiveness.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2007年第4期443-445,449,共4页
Journal of Engineering for Thermal Energy and Power
关键词
催化裂化装置
CO余热锅炉
旁通烟道
省煤器
catalytic cracking plant,CO heat recovery boiler,bypass flue duct,bypass economizer
