A kind of dop continuous production process and used equipment
A production process and equipment technology, applied in the field of production process and equipment used, can solve the problems of high energy consumption and limited production capacity of a single set, and achieve the effects of low energy consumption, reduced energy consumption, and increased production output
Inactive Publication Date: 2011-12-28
浙江庆安化工有限公司
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Abstract
The invention relates to a continuous production process for DOP (Dioctyl Phthalate) and used equipment, which belong to the technical field of fine chemical production. The continuous production process comprises the following steps of: firstly carrying out esterification reaction of phthalic anhydride and isooctyl alcohol in the presence of a catalyst such as titanate, and then carrying out dealcoholization, neutralization and water washing, steam stripping and drying, adsorption and filtration to obtain the DOP. In the invention, by adopting six esterification kettles which are connected in series and have completely the same structure for the esterification reaction, alcohol is kept excessive, the conversion rate is high and is larger than 99.5 percent, the acid value of coarse ester generated in the reaction is less than or equal to 0.3mgKOH/g, and the excessive alcohol accounts for 16 percent; by using the equipment, a production method with low energy consumption, high production capacity and continuous esterification is obtained, the conversion rate is high, the production quantity of a device is improved, the production cost is lowered, and the continuous production process is suitable for industrialized production; the excessive alcohol and the water generated in an esterification stage are recycled and comprehensively recovered, so that the generation of three wastes is reduced; and the production capacity of the DOP is enlarged by 50 percent as compared with a single set of domestic device, and the consumption of energy sources is decreased by 20 percent.
Application Domain
Organic compound preparationCarboxylic acid esters preparation
Technology Topic
ChemistryTransformation ratio +16
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