1) xylene
[英]['zaili:n] [美]['zaɪlin]
二甲苯
1.
Degradation of xylene in gas phase by ozone and UV light;
气相中二甲苯的臭氧和光降解研究
2.
Influencing factors of xylene waste gas treatment by photocatalysis;
光催化处理二甲苯废气的影响因素研究
3.
Determination of Benzene,Toluene and Xylene in Waste Liquor from Presswork;
印刷废液中苯、甲苯和二甲苯的测定
2) dimethylbenzene
[dai,meθil'benzi:n]
二甲苯
1.
Recovery of dimethylbenzene/butylacetate from spent solvent oil by batch distillation;
基于间歇精馏回收废溶剂中二甲苯/醋酸丁酯
2.
Research about the pollution of benzene,methylbenzene,dimethylbenzene and methylaldehyde in the indoor decorated air;
室内装修后苯、甲苯、二甲苯和甲醛污染调查
3.
Separating dimethylbenzene and butylacetate from the industrial waste solvents oil;
废溶剂油中二甲苯/醋酸丁酯分离研究
3) dimethyl benzene
二甲苯
1.
A dividing wall column was used to separate mixture of benzene/toluene/dimethyl benzene and compared with traditional side run-off tower in the same operational condition.
进行DWC分离苯/甲苯/二甲苯3组分混合物实验:在相同操作条件下,与常规侧线采出精馏塔进行对比,并通过改变DWC的进料位置、侧线采出位置及隔板位置等条件,考察对分离效果的影响。
2.
Based on analyzing operation situation of their polycarbonates plant including 160kt/a dimethyl benzene integrated aromatic plant with investment 5.
中国石油化工集团公司洛阳石油化工总厂投资59亿元建成的包括16万t/a对二甲苯芳烃联合装置在内的聚酯工程,自投产以来连年亏损。
3.
0 diesel oil, dimethyl benzene, and Cd2+in sea on the activity of superoxide dismutase (SOD) of Scapharca subcrenata muscle were discussed by inside and outside body contamination.
采用体内、体外染毒实验,研究了海洋中常见污染物0~#柴油、二甲苯以及重金属镉离子(Cd~(2+))对毛蚶(Scapharca subcrenata)肌肉超氧化物歧化酶(SOD)活性的影响。
4) xylenes
二甲苯
1.
Benzene, toluene, ethylbenzene and xylenes(BTEX) are commonly found in crud oil and used as the directing referent in the geochemical investigation for oil and gas.
苯、甲苯、乙苯和二甲苯(简称BTEX)等单环芳烃是石油的重要组分。
2.
Benzene,toluene,ethylbenzene and xylenes(BTEX) are components which are commonly found in crud oil,contaminated ground water and air.
单环芳烃苯、甲苯、乙苯和二甲苯(简称BTEX)是石油的重要组分,也是环境中需要重点监测的致癌污染物。
6) benzene(or xylene)
苯(或二甲苯)
补充资料:二甲苯
二甲苯 xylene 一种芳烃。分子式C8H10。存在于煤焦油和某些石油中 。二甲苯有三种异构体,即邻、间和对二甲苯: 无色液体。邻、间和对二甲苯的熔点分别为-25.2℃、-47.9℃和13.3℃,沸点分别为144.4℃、139.1℃和138.3℃,相对密度分别为 0.8802(10/4℃)、0.8642(20/4℃)和0.8611(20/4℃)。不溶于水,能与乙醇、乙醚等有机溶剂混溶。对、间和邻二甲苯催化氧化,分别生成对、间苯二甲酸和邻苯二甲酸酐;间二甲苯硝化和还原后生成4,6-二甲基-1,3-苯二胺。这些产品是生产纤维和树脂的原料。 工业上二甲苯主要由石脑油重整产物中的C馏分提取。工业二甲苯中含间二甲苯50%~60%(体积),邻和对二甲苯各20%~25%(体积)。邻二甲苯的沸点较高,可以用分馏法分离提纯;对二甲苯的熔点最高,可以用分步结晶法提纯;分出对二甲苯后的剩余物再经分馏,可得纯度为85%~90%的间二甲苯。 二甲苯可直接用作溶剂,或加在汽油中以提高其抗爆性能。对苯二甲酸与乙二醇聚合生成聚对苯二甲酸乙二酯,为涤纶纤维的原料;邻苯二甲酸酐是制造多种染料和指示剂的原料。 |
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