查询词典 catalytic

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate by breaking through the limitation of chemical equilibrium for getting high conversion of hydrolysis.

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

As the early work to build the new art of catalytic distillation hydrolysis of methyl acetate, a non-equilibrium rate model and the calculation method based on it was established.

作为开发醋酸甲酯水解新工艺的前期工作，本文针对醋酸甲酯水解催化反应精馏新工艺，建立了非平衡级反应精馏速率模型和过程模拟的计算方法。

The non-equilibrium rate model was used to simulate the catalytic distillation process of methyl acetate hydrolysis.

采用非平衡级速率模型对醋酸甲酯水解过程进行了模拟计算，考察了水酯比、回流进料比等对醋酸甲酯水解率及塔釜醋酸浓度的影响，得到了下一阶段工业化试验的工艺条件，为工业化生产提供了技术支持。

The SO_4~(2-)/TiO_2-SiO_2 solid superacid catalyst was prepared by sol-gel method;its catalytic activity was investigated to synthesis of methyl acetate.

用正交试验法对催化剂的制备条件进行优化，并对催化剂的酸强度、酸结构进行了系统的研究。

Hydrolysis process of methyl acetate with catalytic distillation can be simulated successfully by a differential model.

用微分模型对醋酸甲酯催化精馏水解实验进行过程模拟。

We have concluded that the main losing activity reason of SO_4~(2-)/TiO_2-SiO_2 solid superacid catalysts used in synthesis of methyl acetate is the accumulated carbon of catalytic surface and the loss of SO_4~(2-).

3对催化剂的失活机理进行讨论，结果表明用于乙酸甲酯酯化反应的SO_4~(2-)/TiO_2-SiO_2固体超强酸催化剂失活的主要原因是催化剂表面积碳和SO_4~(2-)流失。

For the methylal synthesis by fluidized catalytic distillation, an mathematical model of equilibrium stage was set up on some assumptions.

针对甲缩醛合成流化催化精馏过程，在合理假设的条件下，建立了平衡级数学模型。

The unit of 1000t/a methylal synthesis by fluidized catalytic distillation was designed according to the results of equilibrium stage simulation, together with the consideration of the existence of plate efficiency and utilization ratio of catalyst.

在模拟过程中，探讨了塔板数、空时、回流比等对催化精馏效果的影响，分析了各因素对催化精馏的耦合影响关系，得到了较适宜的理论塔板数、空时和回流比，为本体系的工业性试验用催化精馏塔设计提供了依据。

The model for the process of methylal synthesis by fluidized catalytic distillation was established and was used to simulate and design the process. A 1000t/a methylal production unit was built and the test run was conducted with success.

从提出流化催化精馏新型塔结构入手，在本征动力学、宏观动力学、甲缩醛合成流化催化精馏模型与模拟设计和工业性试验等方面，进行了系统的理论和实验研究，取得了一系列研究结果，并获得了1000吨／年甲缩醛合成装置的试车成功。

The possibility of preparation of methylal from methanol and formaldehyde through slurry catalytic distillation catalyzed by acidic cation exchange resin with large size pores is discussed.

研究了以甲醇和甲醛为原料，以大孔径强酸性阳离子交换树脂为催化剂，通过浆料催化精馏工艺制备甲缩醛的可行性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。