Extraction workshop　

Summary of the Extraction workshop　

Capacity of extraction plant will be 80 tons daily of press cake,if you expect to processing 120TPD sunflower seed.

Extraction plant is obtained from the pretreatment & prepress plant embryo or pie slice to get the crude oil extraction with normal hexane extraction process. Production processes include the leaching step, wet meal off steam process, mixed oil evaporation process, the solvent recovery process.

Main equipment

In order to meet client’s requirement； this design considers the current advanced technology, client’s long-term operating practice in the future. The basic principles of design are safety, reliability, energy saving, economy, low failure rate, easy to maintain, long life. The detail is listed as following.

1.Rotary-type extractor: Frequency conversion can adjust the speed of cell or capacity；chain driven makes the operation stable and safety. Stainless steel fixed plates are used, thus extractor has large surplus capacity, it is helpful to expand capacity in the future. Meanwhile, high material level improves extraction efficiency. Extractor has 18 cell, cross grids is applied to prevent the mix oil flowing backwards into the final meal-dropping cell； Cycling solvent pumps have large flux, low head, good sealed, low cost, low noise, stableness.

2.DTDC evapo-separated machine：The design adopts DTDC toaster,  Advantages：

①With fit steam praying method, lowering the temperature of exit vapor, largely saving steam；

②Under the stage of air-tight, distributes direct steam with uniformity, it can make the solvent residue of final meal lower than traditional equipments；

③In each part of the equipment, meal has the same staying time, so the quality is unified；

④Vapor temperature can be automatic controlled by adjusting the flow rate of direct steam ；

3.Stripper ：It is a new pattern stripper that de-solvent capacity is high, and can avoid the case of solvent residue fluctuating due to the instability of vapor； thus, volatile in crude oil is largely reduced. The equipment can help to ensure the safety of refining plant. Trays are connected with flanges, easy for cleaning.

 

Main Technical parameters and index

① Material performance

Cake moisture: 5-8%

  Temperature: 50-60℃

 Oil percentage: 8-16%

 Capacity ≥80 TPD

Product quality index 

② Meal

Meal remain oil ≤1.2%

Meal moisture content: 11-13% can be adjusted

 Meal solvent percentage ≤ 500PPM

③Extracted crude oil

Total volatile matter ≤ 0.2%

Solvent remain ≤ 100PPM

Mechanical impurities ≤ 0.2%

④Economic and technical index

 Steam consumption ≤ 300kg/ton cake

 Power consumption ≤ 15KWH/ton cake

 Solvent consumption ≤ 2kg/ton cake (solvent with international standard)

 

Party A should meet the following main technical index of material:

Crude oil acid value: AV≤2.0(equals to 1.0% fatty acid)

Phosphatide: ≤2%

Wax: ≤0.6％

.Impurities: ≤0.2%

Moisture: 0.5~1%.