The Process Research And Device Design Of The Supercritical CO₂ Extraction Of Grape Seed Oil

This article mainly studies the effects of various factors in the extract of grape seed oil on the extraction effect on the extraction of grape seed oil.First of all,the test test is conducted to study the impact of various factors on the extraction rate of grape seed oil,and then the Aspen Plus simulation of various factors,and use it and use it.The response surface design method is optimized to the test process parameters,and the extraction conditions for the best results are obtained based on the results of simulation and test results.Finally,a new type of supercritical extraction device is designed on the basis of the existing equipment.The main research content is as follows:1.Trial testThe method of extracting the supercritical CO2 extraction was selected to obtain grape seed oil for the red grape seeds provided by Ningxia Huangkou Winery Co.,Ltd.According to a single factor experimental variable method,the effects of the pressure,temperature,CO2 flow and time,and the effects of the particle size on the extraction rate on the extraction rate on the extraction of extraction.According to the single factor test design,the orthogonal test was designed,and the best extraction production process with the best extraction rate was 9.93%of the extract of the extraction pressure,temperature,CO2 flow and time of 28 MPa,45℃,700 L/h,150 min.2.Simulation of the test process in the test processUse Aspen Plus software to simulate single-factor simulation to determine the best CO2 traffic,and simulate the extraction pressure and extraction temperature.The results obtained from the simulation test are not much different from the single factor test results in the test test.The simulation uses the status equation PR-BM,which solves the process of being difficult to model.Combined with the shortcomings of CO2 wasted during the test test,the simulation process recovered and recycled the CO2 in the extraction kettle and the separation kettle,reducing the cost.The Box-Behnken design in the design method of the response surface is optimized to optimize the parameters of the Chinese trial process,and establish a diverse regression equation.The P value of the model is<0.0001,and the extraction pressure,extraction temperature,extraction time,and CO2 traffic are respectively affected by three-dimensional responses.The sequence of the sequence of the four factors on the extraction of grape seed oil is further obtained.The regression analysis is performed through the Design-Expert software.The test predicting the extraction pressure was 23 MPa,the extraction temperature was 45℃,the extraction time was 186 min,and the CO2 flow was 550 L/h.Under the best conditions,the extraction rate of grape seed oil was 8.87%.This method can be more intuitive and accurate than the test test.The impact of various factors on grape seed oil extraction rates cannot be observed through the test.3.The design of the new supercritical extraction deviceCombined with the test test,a process flow chart with control points is designed.At the same time,during the test test,it was found that the equipment had the problem of extracting the kettle pipe road,the CO2 flow display,and the ice blocking phenomenon.Therefore,from these three aspects,from these three aspects It is started to improve the equipment on the basis of the original equipment,and select and calculate the equipment for the equipment.A supercritical extraction device is designed,including the extraction kettle and the turbine mixing mechanism assembled in the extraction kettle;There are fluids entering the pipe and feasting inlet,the feed inlet is sealed with a loading cover,and the lower part of the extraction kettle is set with a fluid discharge tube and residue exhaust pipe;the mixing mechanism includes the first motor,the mixing shaft and the mixing paddle,the first motor installation installation At the top of the extraction kettle,the mixing shaft is installed inside the extraction kettle and connected to the first motor driver;the mixing paddle includes a disco and a variety of flat leaves vertically perpendicular to the disc.The outer edge of the disc is set evenly.This design structure is simple and low-cost.It adopts the inlet and fired method of input and exit,and cooperate with the mixing mechanism.During the mixing process,the high-level turbine flow is caused while rotating.Exercise,increase contact between supercritical fluids and materials,and improve the efficiency of stirring.Make a static structure analysis of the top cover of the device,and simulate the internal flow field of the extraction and loading of the extraction kettle,which can reflect the pressure details of the stress of the extracts and the design of the extracting kettle,and the design.The device can be achieved in theory.