A new technology for synthesis of mesitylene from pseudocumene by liquid non-hydroisomerization on M-2 catalyst was studied.

在M-2型復合絲光沸石催化劑上，研究了偏三甲苯液相非臨氫異構(gòu)化合成均三甲苯的工藝。

So the process is offered using isomerization with separation. 1,2,4-trimethylbenzen is converted to 1,3,5-trimethylbenzen by isomerization. By means of precise distillation mesitylene is separated from products of isomerization as much as possible with high purity. 1,2,4-trimethylbenzen is recycled, at last , more mesitylene is produced and the productive cost is much lower .

為此，本文將催化異構(gòu)化技術(shù)和精密精餾技術(shù)結(jié)合起來色五月婷婷丁香亚洲激情五月，通過異構(gòu)化將偏三甲苯轉(zhuǎn)化為均三甲苯精品无码大片AV在线播放，通過精密精餾技術(shù)將產(chǎn)物中均三甲苯最大限度的分離出來免费真人一级毛片一区二区三，得到很高的產(chǎn)品純度亚洲综合天堂人人操，同時偏三甲苯循環(huán)使用，提高了均三甲苯的產(chǎn)量，降低了均三甲苯的生產(chǎn)成本。

The binary and ternary VLE data of mesitylene, o-ethyl-methylbenzene and 1, 2, 4-trimethylbenzene was measured in this paper and they passed the check of thermodynamics. Then along with the binary and ternary VLE data, the least square method was used to solve vapour-liquid equilibrium model.

采用高溫汽液平衡釜測定均三甲苯、鄰甲乙苯及偏三甲苯的二元及三元氣液平衡數(shù)據(jù)24小时免费看成年女人18级毛片毛片免费，并進行熱力學一致性檢驗欧洲在线人成线视频；采用最小二乘法并結(jié)合汽液平衡數(shù)據(jù)關(guān)聯(lián)汽液平衡模型。

We determined the relation of the temperature and the content of mesitylene to search the optimium operating condition, which assured the content and the yield of mesitylene high. After pre-treated, the raw material contained only the composition of mesitylene, o-ethyl-methylbenzene and 1,2,4-trimethylbenzene.

本文采用間歇精餾法進行預(yù)處理AV免费在线啦；通過測定餾出溫度與組成關(guān)系曲線外国免费黄色网站，確定最佳操作條件，以保證均三甲苯的含量及收率較高人人操操操干干；預(yù)處理后的原料主要含均三甲苯H视频在线看一区、鄰甲乙苯及偏三甲苯91自拍视频在线看。

The binary and ternary experimental equilibrium data of the composites of mesitylene,1-methyl-2-ethylbenzene and 1,2,4-trimethylbenzene and the infinite activity coefficients γ~∞ are measured in the solvent of DBP .

以鄰苯二甲酸二丁酯為萃取精餾溶劑人干人人干在线视频，測定了鄰甲乙苯—均三甲苯—偏三甲苯體系的二元及三元汽液平衡數(shù)據(jù)；編程關(guān)聯(lián)了W ilson模型參數(shù)；采用物料平衡三對角矩陣法對萃取精餾過程進行了模擬，得出了萃取精餾塔的最佳操作條件久久免费美女黄片视频，為萃取精餾法生產(chǎn)均三甲苯提供了基礎(chǔ)數(shù)據(jù)亚洲国产高清一区二区三区不卡。

Pseudocumene, mesitylene, 1,2,3-trimethylbenzene and durene among theheavy aromatic hydrocarbon from catalytic reformation in oil refinery areimportant fine chemical materials, they have not only high additional value butalso particularly useful property, therefore, the exploiting and utilizing the sourceof the heavy aromatic hydrocarbon are of large commercial benefit and promisingapplication future.

煉油廠催化重整裝置重芳烴中偏三甲苯99热这里、均三甲苯播放很快的你懂的的在线、連三甲苯、均四甲苯等都是精細化工的重要原料三级黄色视屏，不僅附加價值高永久在线观看国产日韩va，而且具有獨特的優(yōu)良性能。因此開發(fā)利用重芳烴資源具有較大的經(jīng)濟價值和廣泛的應(yīng)用前景www.baoru.com。

Firstly, for the oxidation reactions of 1,2,4-trimethylbenzene to trimellitic acid, a simplified first-order series-parallel model was proposed, and kinetic equations in constant catalyst concentration and fixed solvent ratio were set up according to the above model.

首先亚洲色影院网站，提出了偏三甲苯液相空氣氧化為串、并聯(lián)一級反應(yīng)的簡化模型亚洲色久悠悠A∨明星换脸。在固定催化劑濃度及溶劑比條件下黄色视频国产在线，建立了偏三甲苯氧化及生成偏苯三酸的動力學方程。

A new production technology of high-quality trimellitic anhydride with the liquid-phase air-oxidation from 1,2,4-trimethylbenzene was developed.

偏苯三酸酐的生產(chǎn)方法主要有偏三甲苯氣相空氣氧化法又粗又大特黄片、偏三甲苯液相硝酸氧化法欧美老妇乱码伦、偏三甲苯液相空氣氧化法和間二甲苯甲醛液相空氣氧化法。

The excess molar volumes V~E of {trichloromethane +1,3,5_ trimethylbenzene ,trichloromethane + 1,2,4_ trimethylbenzene ,nitrobenzene + 1,3,5_ trimethylbenzene ,nitrobenzene + 1,2,4_ trimethylbenzene } were determined in the whole range of composition using a vibrating_tube densimeter at 298\^15 K.

在298 15K下，用振動管密度計在全濃度范圍內(nèi)測量了氯仿日韩另类福利影院在线播放、硝基苯分別與均三甲苯无码小视频在线观看、偏三甲苯構(gòu)成的二元液體混合物的過量摩爾體積VE。

The feedstock was changed from high purity meta- trimethylbenzene to meta- trimethylbenzene blended with 45%-55% mixed trimethylbenzene obtained from the top of the heavy component removal column; the original 3-column separation scheme was replaced by 2 columns; and modified the isomerization reaction system in compatible with the separation system for capacity enlarge.

金陵石化公司煉油廠針對異構(gòu)化裝置生產(chǎn)均三甲苯經(jīng)濟效益不明顯的情況国产91一区在线，改變了原料路線26uuu色噜噜在线播放，在原以高純度偏三甲苯為原料的基礎(chǔ)上摻煉 4 5 %～ 5 5 %的脫重組分塔塔頂混合三甲苯；優(yōu)化了均三甲苯分離流程国产欧美日韩一区，將原來的三塔流程改為兩塔流程日本体内she精3汇编；進行了異構(gòu)化反應(yīng)系統(tǒng)與分離系統(tǒng)相匹配的擴容改造，收到了良好的效果一级一片，均三甲苯生產(chǎn)能力由 4 5 0t/a提高到 12 0 0t/a 在线观看AV麻豆，收率由 11%提高到 2 2 。0 %～ 2 4 xxxx.wwww。0 %在线看片免费人成视频久网不卡，純度由 97.9%提高到 98.9%。

unswept region：未波及區(qū)

unsurveyed 未測量的 | unswept region 未波及區(qū) | unsym-trimethyl benzene 偏三甲苯

unsymmetric kernel：不對稱核

unsym-trimethyl benzene 偏三甲苯 | unsymmetric kernel 不對稱核 | unsymmetrical carbon 不對稱碳原子