The Experiment Made Indigenously Of The Organic Phosphine Catalyst Used In Synthesize Carbonyl

The Shell Company provides a patent technique which is the technique of synthesizing the high carbon alcohol using the method of middle pressure and generating the aliphatic alcohol in a catalyst system, including cobalt catalyst and organic phosphine catalyst, which is the center technique of the middle pressure. At present, the plant of organic phosphine catalyst of whole world countries are provided by Shell company only, as securities of the technique and the expensive price.In order to carry out industrialization of organic phosphine catalyst and make our relevant enterprise decrease the production cost at the same time, as well as achieving completely the domestic of aliphatic alcohol. The following technology is improved: improving the manufacture technology of PH3; adding end gas burning system; adding cooling water system; improving the vacuum system; adding reaction distill kettle; amending plane collocation; replenish the single direction valve to guarantee the independent and safety of the system operation.On the basis of the improving technology, how to enhance the conversion of the MPH(C8H14PH)is studied on the others aspect: Change the dosage of solvent; determine the ratio of MPH toα-octadecene; explore the reaction time; explore the loading coefficient in the kettle.Improved middle experiment plant produced organic phosphine catalyst which purity is 86%, the production pass the test basically. We find that the receiving rate of the catalyst is very low. By analyzing carefully on the technology, it is found that the lower absorbing of PH3 in the fixed solution of the COD and toluene resulted in the problem.