查询词典 acetic aldehyde

In optimal design procedure, two important design variable are identified: one is recycle flow rate and the other is specification of acetic acid in the distillate of second column (pinch point exists between water-acetic acid system).

在最适设计步骤中，我们发现两个最重要的变数：回流股流量及第二根塔顶乙酸规格(乙酸与水之间有狭点存在)。

The association effect of inert gas and gas phase acetic acid-water in condensing process was considered, the heat and mass transfer behavior of the heat exchangers at every step and the influence of heat and mass transfer on the design of heat exchangers were analyzed for the condensing process of acetic acid, water, and mixed nitrogen vapor in the condenser in the PTA oxidation process.

针对PTA氧化反应中冷凝器内的醋酸、水和氮气混合蒸气冷凝过程，考虑冷凝过程中惰性气体和气相醋酸-水缔合效应，分析了各级换热器内传热传质行为以及传递对换热器设计的影响。

This year the company operating the various organic chemical raw materials, varieties are: methanol, ethanol, ethylene glycol, butanol, isobutanol, isopropanol, glacial acetic acid, vinyl acetate, B lipid, Ding acetic acid lipid, styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulphuric acid, methyl isobutyl ketone, glycol Dingmi, three toluene, 2 Xin fat, melamine.

本公司常年经营各种有机化工原料，品种有：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺。

Esterification of acetic acid with isoamyl alcohol catalyzed by ferric chloride was studied,and effect of different factors such as reaction time,dosage of catalyst and ratio of acetic acid to isoamyl alcohol on the yield of isoamyl acetate was carefully examined.

研究了以三氯化铁为催化剂乙酸与异戊醇的酯化反应，考察了反应时间、催化剂用量、醇酸摩尔比等因素对乙酸异戊酯收率的影响。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl -2-acctonc, phenyl acetic acid, 1- phenyl -2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、 3 ， 4-亚基二氧苯基-2-丙酮、苯乙酸、 1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

Compared to the samples without using glacial acetic acid, the powders using glacial acetic acid showed big crystallite size and good crystallization.

与未加冰乙酸制备的样品相比，使用冰乙酸制得的粉体晶粒尺寸大，结晶性能好。

At first, the broth was acidified, then centrifuged to get mycelia, which was heated and powdered; finally we use acetic ether to soak the powder. After that, the phase of acetic ether was washed using the solution of ammonium sulfate and the solution of ethanedioic acid, then concentrated to gain pulps. It was crystallized at 4℃.The coarse crystals was decolorized by activated carbons, the pure needle crystal of lovastatin was obtained.

发酵液经酸化处理后，离心得到菌体，烘干后过筛得到菌粉；用乙酸乙酯浸泡，乙酸乙酯相需用(NH_4)_2SO_4溶液和草酸溶液洗涤两次；乙酸乙酯相经薄膜浓缩得到浆状物，于4℃结晶，得到粗晶体；再经粉末活性炭脱色和重结晶后得白色针状结晶，为lovastatin的纯品。

As for color, or high-level material of the clothes, not to use acetic acid to wash Oh, because acetic acid has bleaching effect, aqueous ammonia can be use to wipe.

至于有颜色或高级质料的衣服，则不要用醋酸来洗哦，因醋酸有漂白作用，可改用阿摩尼亚水溶液来擦拭。

Acetaldehyde generated from the 2 - butene aldehyde carbonyl and the reaction is the condensation of methylene ...

由乙醛生成2－丁烯醛的反应是羰基与亚甲基发生缩合的。。。

Formaldehyde, acetaldehyde and acrolein are common aldehyde in the environment.

甲醛、乙醛和丙烯醛均为环境中常见的醛类。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。