In order to solve the above problems, through the establishment of a new experimental model, in the laboratory simulation experiment on the basis of amplification, and ultimately the purity of the product as much as 98。2% or more, and to retain the good quality of the aroma。

As people's living standards grow slowly today, many people will have a strong interest in some of the no side effects of special effects drugs, green food additives, and some high-performance new energy materials, which undoubtedly attracted some development and production Lactone biologically active compounds of the manufacturers of the eye。 They looked at the high profits of developing and producing lactones, which further deepened their research and sought to get the best output with minimal investment。 By comparing the aroma value and the retention value of the γ-decalactone perfume and other lactones, and comparing the unit price comparison with other lactones, it is found that it has a very practical "practical value" , That should be vigorously developed。

The design conforms to the development of the chemical industry to be designed through the second development direction。 The aim is to increase the purity of decalactone to 98。2% by intermittent vacuum distillation with a concentration of 88。02%。

The chemical process design process is as follows:

1) According to the design of the project design content, design test procedures and selection of equipment, such as selection of packing。

2) In the laboratory to build a small test device, the crude decalin lactone product for simple purification, measured the composition of raw materials and late Aspen simulation of the basic parameters required。

3) according to the design task of material accounting。

4) The Aspen Plus modeling software was used to simulate the rectification process of crude decalactone, including its physical property estimation, simple mode, and then further detailed simulation。 Finally, the simulation parameters were optimized and analyzed。

5) using CAD mapping software to draw its process flow chart and the main equipment map。

The process design standards refer to the following national standards and regulations:

1 "steel pressure vessel" GB150-1998

2) "Chemical Equipment Design Document Preparation" HG20668-2000

3) "steel chemical container design basis" HG20580-1998

4) "steel chemical container material selection requirements" HG20581-1998

5) "steel chemical container strength calculation provisions" HG20582-1998

6) "steel chemical container structure design requirements" HG20583-1998

General specification for construction and acceptance of installation of mechanical equipment GB50231-98

8) "Industrial automation instrumentation construction and acceptance of norms" GBJ93-86

9) "steel chemical container manufacturing technical requirements" HG20584-1998

10) "Code for Design of Concrete Structures" GBJ10-89

Standard Specification for Design of Pipeline Arrangement for Chemical Plant "HG / T20549

12)"steel tower containers" JB / T4710-2005

The design principles are as follows:

1) the use of simple, efficient, energy-saving distillation process design, to ensure the effect of purification under the premise of minimizing the experimental consumption and daily work costs。

2) as far as possible to select some quality clearance, easy maintenance, relatively low energy consumption of electrical and mechanical equipment and some approved by the environmental protection department and recommended excellent performance, the price of special equipment。

3) Adhere to the comprehensive utilization, clean up the persion, and reasonably set the size of the design to ensure that products meet standards。