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181, The catalysis of resinic solid acid catalysts in catalytic distillation is studied for synthesis of methylal from methanol and formaldehyde.

182, The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.

183, Contrast the parameter of the processes, the best conditions of chlorination distillation are designed.

184, Mathematical analysis on the refrigeratory system and fractional distillation system of the plant provides a basis for plant design.

185, Compared to the present process, the new reactive distillation process is able to simplify greatly the production sequence and save much the equipment cost.

186, The application of catalytic distillation reactor in benzene alkylation process is presented.

187, The standard method with atmospheric pressure correction for distillation test of coking benzene products is studied. The distillation range of coking benzene products is defined.

188, Pressure distillation used in acetaldehyde production can save energy markedly.

189, Distillation device was slightly improved, analyzed by carbon dioxide and determined by water for the analysis of acetic acid from cuprammonia , with recovery of 97%.

190, Objective:to study the chemical constituents of the essential oil of Inula helenium L. were extracted by steam distillation(SD)and supercritical-CO2 fluid(SFE).

191, The essential oils of leaves from Eucalyptus camaldulensis and Eucalyptus benthami were extracted by steam distillation and their chemical constituents were determined by GC-MS method.

192, The vertical shell houses the column internals and together with the condenser and reboiler, constitute a distillation column.

193, Light oil and the residued cyclohexylamine were recovered through the vapour distillation.

194, In this thesis the water content in C 4 distillation is determined with Carl - Fisher - Coulomb potentiometric method.

195, This final step may be Reverse Osmosis, Ultrafiltration, Multi or Mixed Bed Deionization or Distillation.

196, In order to solve the distillation separation sequence synthesis problem effectively, super or neighborhood structure must be researched, and it is the foundation of realizing optimization algorithm.

196, Sentencedict.com is a sentence dictionary, on which you can find nice sentences for a large number of words.

197, A distillation column case study is given to illustrate the performance assessment method.

198, The quinones in stem of Plumbago zeyanica L. was extracted by steam distillation, and the content of plumbagin in the quinones was determined.

199, Evolutionary algorithm is applied to solve distillation separation sequence optimization synthesis problems that are characteristic of combination explosion.

200, Through optimizing and adjusting the operating reflux ratio of distillation column during production process pickled benzol refining, the processing quantity of light benzol was break through.

201, The camphor oil was extracted from roots, branches, fresh and fallen leaves of Cinnamomum camphora by the method of distillation.

202, A distillation tower in which a rectifying column is used.

203, In fractional distillation, that part of the distillate which may be returned to the column to assist in making a better separation into desired fractions.

204, The effect of chloride carrier in spectrographic analysis has been investigated with carrier distillation method.

205, There are solvent extraction, ion exchange, vacuum melting, vacuum distillation or sublimation, electro migration and regional melting, etc.

206, The invention discloses a kind of catalyst distillation module and uses this module the catalyst distillation method.

207, There is 1 heating tank, 1 set of distillation test and 1 system of six ions of water testing.

208, The effects of vacuum distillation temperature and hydrolysis ratio on the product of alkoxide hydrolysis were studied.

209, The distillation - adsorption process was used to treat non - degradable accelerator CBS wastewater of high concentration.

210, OBJECTIVE:To evaluate the solid-phase microextraction versus Steam distillation in the extraction of volatile oil in Jatamans Valeriana Rhizome.