查询词典 benzol

The coking crude benzol hydrogenation process and its catalytic system are discussed, and the domestic application of the hydrogenation process is introduced briefly.

论述了焦化粗苯加氢精制的工艺方法及其催化体系，并简单介绍了国内加氢工艺的应用。

The products were recrystallized by petroleum ether. The purity of 1,2 bis chlormethyl benzol was beyond 98%.

考察了邻二-苯在ZnSO4 催化剂存在下反应条件对合成邻苯二甲醛的影响。

The good result of the technical modification of raw benzol rectifier carried out with the guide spraying tray has been obtained.

应用导向喷射塔盘对两苯塔进行技术改造，取得了良好的效果。

This paper discusses the influnce of different compounds in tar washing oil on the efficiency of adsorbing crude benzol and polymerized degree.

本文详细讨论了洗油中各组成对吸苯能力和聚合程度的影响。

The salt-out extraction process is used to deal with the waste acid from benzol refining .

试验采用盐析萃取工艺对焦化精苯废酸进行处理回收，结果表明，在一定的比例下可获得最佳萃取分离效果，酚相萃取液可进行二次利用，回收的净化酸可用于硫铵制备。

The reconstruction solved the problem of high consumption of benzol washer wash oil due to poor collecting efficiency.

介绍了使用气液过滤网对洗苯塔捕雾器进行改造，解决了由于捕集效率差造成洗苯塔洗油消耗大的问题。

China in recent years launched a number of large projects crude benzol hydrogenation , but the most are foreign technology and independent research and development became an urgent task.

国内近年大量上马一批粗苯加氢精制项目，但多引进国外技术，自主开发研究成为迫切任务。

The feature of orientating injection column tray and application situation of benzol stripper and ammonia stripper in the coking industry are described.

摘 要：介绍了导向喷射塔盘的特点及导向喷射塔盘在焦化行业脱苯塔和蒸氨塔的使用情况。

Based on the analysis to production data, it is pointed out that coking crude benzol should be further pre-distilled to effectively remove the high-boiling-point composition before entering the hydrogen-adding refining device.

通过对生产数据的分析，阐述了焦化粗笨进入加氢精制装置前，需进一步预蒸馏，有效去除高沸点组分的必要性。

The property, usage and synthetic method of caprolactam were introduced in this paper, the coke oven gas pressure swing adsorption technology and crude benzol hydro-refining process were described.

摘 要：介绍了己内酰胺的性质、用途及合成方法，阐述了焦炉煤气变压吸附制氢技术和粗苯精制工艺。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。