ISO 9001 edible vegetable cooking oil - palm oil refinery equipment

Palm Oil Refinery Equipment

Basing on the traditional oil refining technology, Zhengzhou QI'E Grain and Oil Machinery Co.,Ltd has developed the latest combined packing layer plate deodorization soft tower and the physical and chemical mied refining technology for crude oil of any quality. Moreover, a series of advanced technology and equipment are used, such as super wet deguming, bleaching earth automatic metering, negative pressure decoloring, high vacuum steam jet deodorization, deacidification, winterization dewaing etc.. With advanced technology, superior equipment, full-automatic control and ecellent economic and technical parameters, our equipment can meet customers' different refinery equipments at home and abroad.

Main Processes Introduction

Hydration Deguming & Alkali Refining Deacidification Process

Neutralization:the crude oil is output by the oil feed pump from the oil tank, and net enters the crude oil heat echanger to recover part of heat after metering and then is heated to the required temperature by the heater. After that, the oil is mied with the metered phosphoric acid or citric acid from phosphate tank in the gas miture (M401), and then enters the conditioning tank (R401) to make the non-hydratable phospholipids in oil change into the hydratable phospholipids. Add the alkali for neutralization, and the alkali quantity and alkali solution concentration depend on the quality of the crude oil. Through the heater, the neutralized oil is heated to the temperature (90C) suitable for centrifugal separation to remove the phospholipids, FFA and other impurities in the crude oil. Then the oil goes to the washing process.

Washing:there is still about 500ppm soap in the neutralized oil from the separator. To remove the remaining soap, add into the oil about 5~8% hot water, with water temperature 3~5 C higher than the oil generally. To achieve more stable washing effect, add phosphoric acid or citric acid when washing. The re-mied oil and water in the mier is heated to 90-95C by the heater, and then enters the wash separator to separate the remaining soap and most water. The water with soap and oil enters into oil separator to separate out oil in the water. Further catch the oil outside, and the waste water is discharged to the sewage treatment station.

Vacuum drying stage: there is still moisture in the oil from the wash separator, and the moisture will affect the stability of the oil. So the oil at 90C should be sent to vacuum drier to remove the moisture, and then the dehydrated oil goes to the decoloring process. Finally, pump out the dry oil by canned pump.

Continuous Refining Decoloring Process

The main function of decoloring process is to remove oil pigment, residual soap grain and metal ions. Under negative pressure, the mechanical miing method combined with steam miing will improve the decoloring effect.

The degummed oil firstly enters into the heater to be heated to the appropriate temperature (110C), and then goes to the bleaching earth miing tank. The bleaching earth is delivered from the low bleaching bo to the temporary tank by wind. The bleaching earth is added by automatic metering and is interlockingly controlled with the oil.

The oil mied with the bleaching earth overflows into the continuous decolorizer, which is stirred by non-powered steam. The decolored oil enters into the two alternate leaf filters to be filtered. Then the filtered oil enters the decolored oil storage tank through the security filter. The decolored oil storage tank is designed as the vacuum tank with the nozzle inside, so as to prevent the decolored oil contacting with the air and influencing its peroide value and color reversion.

Continuous DecoloringProcess Features:

1. The oil fully contacting with the decolorant can improve the decolorization efficiency and reducethe usage of decolorant;

2. The continuous and uniform material flows will balance the decoloring time and avoid the recovery of grease oidation and acid value.

3. The special miing structure of decoloring tower won't cause the material dead area, which can avoid the adsorbent sedimentation and pipe blockage.

4. The continuous airtight efficient filtration equipment has realized the automation of cake discharge and reduced the labor intensity.

5. The advanced drying technology can reduce the oil content in filter cake.

Continuous Refining Deodorizing Process

The qualified decolored oil enters into the spiral plate heat echanger to recover most of the heat, and net goes to high pressure steam heat echanger to be heated to the process temperature (240-260C) and then enters the deodorizationtower. The upper layer of combined deodorization tower is the packing structure which is mainly used to remove the odor producing components such as free fatty acid (FFA); the bottom layer is the plate tower which is mainly for achieving the hot decoloring effect and reducing the peroide value of the oil to zero. Oil from the deodorization tower enters into the heat echanger to recover most of the heat and makes further heat echange with crude oil, and then is cooled to 80-85C through the cooler. Add the required antioidant and flavor agent, and then cool the oil below 50C and store it. Such volatiles as FFA from the deodorizing system are separated by the packing catcher, and the separated liquid is FFA at low temperature (60-75C). When the liquid level in the temporary tank is too high, the oil will be sent to the FFA storage tank.

Automatic Control System

Our company has applied the automatic control system with advancedness, security, reliability into the pretreatment, etraction, refining and fractionation in large oil plants. For its application in automatic control system, it can control the production in the entire workshop and monitor the operational status of each device by controlling the computer terminals in the room. One person only can operate the entire workshop, with efficient production management. It has reduced the production cost greatly and improved the management efficiency.