预处理车间简介

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        Pretreatment Plant Introduction

• 工艺流程说明Technological process introduction

 1．米糠膨化工艺流程Rice bran extrusion flow chart:
        米糠→磁选→清理→挤压膨化→平板烘干→去浸出车间
Rice bran→Magnetic separation→Cleaning →Extrusion Puffing →flat drier→To leaching plant
2.主要工序描述 Main process description:
清理工序Cleaning process:
采用磁选器去除铁杂；糠粞分离筛去除碎米、米粞等；
Adopt the magnetic separation removing iron miscellaneous and Chaff rotary sifter removing broken clear, rice Xi, etc.
 
膨化工序Extrusion process:
采用膨化机，既可以改善米糠的出油效率，也可提产量同时还可以降低消耗。米糠通过挤压膨化，方面使米糠中的解脂酶在瞬间温和压作用下被钝化，防止米糠油的酸败；另方面，通过挤压膨化使米糠成为多孔的料粒，增大了物料的容重，提溶剂对物料的渗透性和浸出速率。
  Adopting the bulking machine can both improve the yield of rice bran oil and reduce the consumption. The extrusion puffing, on the one hand, can make solution lipase in the rice bran passivated under high temperature and high pressure condition,then prevent the rice bran oil rancidity; On the other hand, the extrusion puffing can make rice bran be porous material grain, and increases the materials bulk density, then improve the permeability and leaching rate which solvent reacts to the material.
  
                   
烘干工序Drying process:
经膨化后的米糠含水13~15%左右，而浸出工序的佳水分7-9%，所以，必需通过有效的干燥手段使之达到佳入浸水分。采用平板烘干机对从膨化后的米糠进行烘干，使米糠水分和温度满足后续工艺的要求，提出油率，改善毛油质量。
The puffed rice bran contains about 13~15% water, and the best moisture for leaching process is 7-9%, therefore, there must be effective drying means to achieve the best leaching moisture.Adopting flat dryer can make water and temperature meet with follow-up process requirements, and improve the oil yield, as well as oil quality.

 
3.工艺特点Process feature:
预处理工艺特点Pretreatment process feature:

1. 采用糠粞分离筛使米糠和碎米、米粞分离效率，能耗低。

Separate rice bran ,smash rice by Chaff rotary sifter ，high efficiency,low consumption.

2. 采用湿式膨化处理，米糠成型好，渗透好，降低残油和溶耗，产量提30-50%。

The wet puffed processing, rice bran forming good, good permeability, reduce residual oil and soluble consumption