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轮胎顶线油脱氯的吸附剂筛选研究

2015-10-21汤占帅王晓宁周如金曾兴业吕尚庆

当代化工 2015年6期

汤占帅 王晓宁 周如金 曾兴业 吕尚庆

摘 要:以轮胎顶线油为原料,通过静态实验分别从4种吸附剂和脱附剂中筛选合适的有机氯吸附剂和脱附剂,并探究了温度对较佳解吸剂解吸过程的影响,对其中较佳吸附剂进行动态实验,探究流速和温度对其动态吸附顶线油中有机氯化物的影响。结果表明:静态实验中,活性炭的吸附率较大为21.07%,苯对活性炭的解吸效果较好,其较佳的解吸温度为60 ℃,解吸率为72.23%;动态吸附试验中,活性炭吸附轮胎顶线油中有机氯化物的较佳工艺条件为:流速1 BV/h,温度110 ℃,吸附率为15.53%。

关 键 词:吸附剂;解吸;动态吸附;有机氯化物

中图分类号:TQ 028 文献标识码: A 文章编号: 1671-0460(2015)06-1209-04

Screening of Adsorbents for Dechlorination of Tire Top Line Oil

TANG Zhan-shuai1,2,WANG Xiao-ning1,ZHOU Ru-jin2,ZENG Xing-ye2,LV Shang-qing1,2

(1. Liaoning Shihua University , Liaoning Fushun113000, China ;

2. Guangdong University of Petrochemical Technology, Guangdong Maoming 525000, China)

Abstract: Choosing the tire top line oil as the study material, the appropriate organochlorine adsorbent was screened from four adsorbents by static experiments. The influence of temperature on the desorption process of the appropriate desorbent was explored by static experiment. Then effect of flow rate and temperature on adsorption of the appropriate adsorbent for organic chlorides in tire top line oil was explored by dynamic-model experiment. The results show that the adsorption rate of activated carbon is higher,21.07%;the desorption effect of benzene is better for activated carbon, and its appropriate temperature is 60 ℃ in static absorbing test, the desorption rate is 72.23%; the optimum condition of activated carbon adsorbing organic chlorides in tire top line oil are as follows: flow rate 1BV/h, temperature 110 ℃ .The adsorption rate under this condition is 15.53%.

Key words: Adsorbent; Desorption; Dynamic adsorption; Organic chlorides.

輪胎顶线油作为轮胎热解油中的轻质油部分,具有汽油、石脑油的部分特性,因其氯含量较高而影响其进一步开发利用[1-3]。南国枝[4]、Kjellerup B V[5]、 Aktas O[6]等采用活性炭对有机氯化物的脱除进行了研究,但是目前采用其他吸附剂脱除有机氯化物的研究还鲜见报道。实验中选用了活性白土、变色硅胶、活性炭、活性氧化铝4种吸附剂,对这4种吸附剂的吸附性能和其中较佳吸附剂的解吸性能采用静态实验进行了比较研究,并对静态试验中较优的吸附剂进行了动态吸附研究,探究了流速、温度对该吸附剂动态吸附率的影响。

1 实验部分

1.1 试剂及仪器

试剂:轮胎顶线油;活性白土(AR);变色硅胶(AR);活性炭(AR);活性氧化铝(AR);实验水为去离子水。

仪器: LC-4 型通用微机库仑仪; B-IIIA循环水式多用真空泵; BL100流量型蠕动泵。

1.2 实……

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