Oil Extraction Production Line
100-6000t/d
植物油提取线
主要设备：提取器，脱溶剂 - 烤箱，带集成干燥器 - 冷却器，负压蒸发器，水平不锈钢管束冷凝器，从混合物中去除膳食泡沫的过滤系统，从废气中回收溶剂的系统，用于分离水的循环系统来自溶剂，电气控制系统
适用原料：大豆，油菜籽，棉籽，花生，葵花籽，玉米胚芽，米糠，棕榈纤维（棕榈粉）
生产能力：100-6,000t / 24h原料
工艺流程
油提取部分→DTDC脱溶剂烘干机冷却器→油过滤部分→蒸发和分离部分→溶剂冷凝和回收系统→石蜡吸收系统→水溶剂分离和回收系统→自动控制系统
（1） 采油部
客户可根据需要选择rotocel提取器或拖链提取器。对于不同的原料，将适当调整格栅托盘间隙和格栅托盘布置，以确保种子粉中的残油最少。此外，种子粉中的液体将被完全排出，这有助于最小的溶剂含量。结果，在顺序过程中对脱溶剂装置施加的负担将大大减轻，这进一步减少了蒸汽消耗。
(2) DTDC Desolventizer Toaster Dryer Cooler
The machine consists of pre-desolventizing layer, heat exchange layer, desolventizing layer, heat recovery layer, drying layer and cooling layer. Materials levels at each layer can be automatically controlled. Full utilization of secondary steam reduces steam consumption. Mixed steam will be used to heat miscella after meal foam removal, which further saves energy. The process features thorough desolventizing, light yellow meal, complete passivation of antinutritional factors, short time required for high temperature desolventizing and low loss of meal NSI.
(3) Oil Filtration Section
The process is designed to filter out solid impurities prior to miscella evaporation. Devices used include high pressure delivery pump, centrifugal separator and filter with slagging function. Optimum filtration effect can be achieved by combination of centrifugal separation precise filtration. Since the filter is able to remove slags automatically, no manual operation is required.
(4) Evaporation and Separation Section
Devices used in the process contains evaporator, disc stripping tower, flash separator, heat exchanger and vacuum unit. Under a vacuum and negative pressure condition, solvent in the miscella will be evaporated and separated by rising film evaporation and direct stripping. After thorough desolvation, bright color leached oil will be obtained. To ensure system stability and reliability, an automatic PLC control system is adopted for control of evaporating temperature and vacuum level. Both mixed steam and power steam for vacuum pump will be sufficiently used for evaporation. Heat transfer and mass transfer between cool and hot medium furthers reduces steam consumption. In addition, lipid oxidation can be prevented as well.
(5) Solvent Condensation and Recovery System
The system mainly consists of condenser and circulating cool water system. Under the vacuum condition, condensable solvent steam is condensed into liquids for cyclic utilization through dividing-wall heat transfer. Multiple-pass structure of the condenser and proper settings of flow rate and speed of circulating water will greatly improve efficiency of condensation and separation and largely reduces investment capital and operating cost. In addition, tube plates, baffle plates and heat exchange tubes are all made of stainless steel, which facilities cleaning and withstands corrosion. Moreover, great condensation effect and long service life can be fully ensured.
(6) Paraffin Absorption System
The system consists of Paraffin absorption column,Paraffin desorption column,hear exchanger,storage tank, punp,Exhaust gas blower and so on. It is able to recycle more than 98 percent solvent in the exhaust gas, which reduces solvent loss and protects environment at the same time.
The system makes use of food-grade liquid paraffin to adsorb solvent gas mixed in exhaust gas. The solvent steam will be distilled and separated with the help of superheated steam. Then the solvent steam obtained will be recycled through condensation. To ensure stable absorption efficiency and system reliability, automatic control devices are applied to control important parameters such as flow rate, temperature and pressure.
(7) Water & Solvent Separation Section
The system consists of solvent-water separator, boiling tank,and fresh solvent pump. It separates water from solvent based on the principle that water repels solvent and two liquid layers will be formed in their mixture. To ensure stability and reliability of the system, automatic control devices are applied to control important parameters such as flow rate, temperature and material level.
(8) Automatic Control System
在我们的生产线上，我们使用西门子PLC控制系统，这是当今行业中主流的自动控制系统之一。高效，稳定，先进的DCS控制系统由操作站，控制站和通信网络组成。我们在控制系统中使用高速大容量S7-400系列PLC，在操作站使用大屏幕LCD，作为监控软件的WINCC 7.0工业控制软件和PROFIBUS现场总线网络进行通信。
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