1.Abstract: The causes for low efficiency of the heater in No.2 Crude Unit of JPC refinery are described and analyzed including water leaking of steam soot blower,dew point corrosion caused by steam,soot deposits in convection chamber owning to poor soot blowing,high flue gas temperature,no heat recovery of flue gas,and poor performance of insulation lining,etc.By using sonic soot removing system,flue gas recovery system,spray coating of fiber and rock wool,as well as adjustment of flow scheme accordingly in the technical revamping.The dew point corrosion is completely eliminated,the insulation performance is improved,the heat loss is reduced by 1.25%,the flue gas temperature is reduced to about 170 ℃,and the heater efficiency is increased from 83%to more than 90%.
文摘:分析了金陵石油化工公司炼油厂二套常减压装置加热炉存在的因蒸汽吹灰器漏水,蒸汽引起露点腐蚀及吹灰效果差造成对流室积灰，排烟温度高，烟气热量未回收利用以及炉子保温衬里效果差等问题，提出采用声波除灰系统、烟气回收系统、纤维喷涂和岩棉喷涂及相应的流程调整等改造措施.测定结果表明，本次技术改造解决了因蒸汽吹灰器漏水所造成的露点腐蚀问题，提高了保温效果，减少散热损失1.25%,排烟温度降至170℃左右，装置的炉效率由83%左右提高到90%以上.
2.The causes for low efficiency of the heater in No.2 Crude Unit of JPC refinery are described and analyzed including water leaking of steam soot blower,dew point corrosion caused by steam,soot deposits in convection chamber owning to poor soot blowing,high flue gas temperature,no heat recovery of flue gas,and poor performance of insulation lining,etc.By using sonic soot removing system,flue gas recovery system,spray coating of fiber and rock wool,as well as adjustment of flow scheme accordingly in the technical revamping.The dew point corrosion is completely eliminated,the insulation performance is improved,the heat loss is reduced by 1.25%,the flue gas temperature is reduced to about 170 ℃,and the heater efficiency is increased from 83%to more than 90%.
分析了金陵石油化工公司炼油厂二套常减压装置加热炉存在的因蒸汽吹灰器漏水,蒸汽引起露点腐蚀及吹灰效果差造成对流室积灰，排烟温度高，烟气热量未回收利用以及炉子保温衬里效果差等问题，提出采用声波除灰系统、烟气回收系统、纤维喷涂和岩棉喷涂及相应的流程调整等改造措施.测定结果表明，本次技术改造解决了因蒸汽吹灰器漏水所造成的露点腐蚀问题，提高了保温效果，减少散热损失1.25%,排烟温度降至170℃左右，装置的炉效率由83%左右提高到90%以上.
3.In experiment, absorbent is CaO powder, mixture of air and SO_2 in different proportions simulates flue gas from MSW incinerator, outlet concentration of SO_2 is measured by intelligent flue gas analyzer online, effects of temperature, Ca/S, inlet concentration of SO_2, particle diameter and resident time of flue gas on desulphurization efficiency of CaO are studied.
实验中以氧化钙粉末作吸收剂,空气与纯二氧化硫按一定比例混合模拟烟气,使用智能烟气分析仪在线测量二氧化硫出口浓度,研究温度、Ca/S、二氧化硫进口浓度、粒径和烟气停留时间等各因素对氧化钙脱硫效率的影响。
4.Through measuring residual swhirling flow field in the flue duct of a real boiler, and analysing layout features of front and back platen supe-heaters in large-scale tangential firing boilers, the flue gas energy distribution regularity in horizontal flue duct of tangential firing boilers has been studied.
摘要通过对实际锅炉烟道烟气残余旋转流场的测量及大型切圆燃烧锅炉前、后屏过热器的布置特点分析，研究了切圆燃烧锅炉水平烟道烟气能量的分布规律。
5.PCA based on SPSS was used to evaluate the qualities of 9 flue-cured tobacco Varieties in Nanyang. The results showed that the evaluation was very similar with the planting fact of the varieties,so using the method to evaluate the qualities of flue-cured tobacco can get a better effect.
以SPSS软件为工具,运用主成分分析法对南阳烟区种植的9个烤烟品种进行了综合评估,结果表明,评价结果与各品种在生产中种植情况基本吻合,因此认为该法评价烟叶质量效果较好。
6.The operation of a heater with poor ventilation; 3.The operation of a heater with good ventilation and air flue being partially blocked; 4 The operation of heater with poor vetilation and air flue partially blocked.
模拟工况有以下几种：厨房空气流通情况下热水器正常使用；厨房空气不流通情况下使用热水器；厨房空气流通情况下，热水器烟道部分堵塞；厨房空气不流通情况下，热水器烟道部分堵塞。
7.This paper briefs the compositions of toxic and harmful substance from refuse incineration flue gas,provides the relative technique and process for controlling their pollutions and indicates that the emission standard of refuse incineration flue gas should be worked out as soon as possible.
文中介绍了垃圾焚烧烟气中的有毒有害物质的成分，并对其污染防治提出了相应的技术及工艺方法．并提出应尽快制定垃圾焚烧烟气排放标准．
8.A flea and a fly fled up in a flue. Flea said, “Let us flee！” fly said, “Let us fly!” So they fled through a flaw in the flue.
一只跳蚤和一只苍蝇掉进了一根管子里。跳蚤对苍蝇说：“让我们逃！”苍蝇对跳蚤说：“让我们飞！”最后，两个通过那管子的一个裂缝逃走了。
9.The content of nornicotine is higher after flue-curing than before flue-curing.
湿度对烟碱含量影响无明显的规律性。
10.The experiment belongs to wet type flue gas treatment technique, studying the removing of SO_2 and NO_X from analog flue gas using urea and potassium permanganate solution as the absorbent.
本试验采用吸收剂为尿素和高锰酸钾的湿法工艺对模拟烟气中的SO_2和NO_x进行脱除的试验研究。
