Method for crude oil recovery through demulsification/dehydration of crude oil tank mechanical washing and clean-up oil
A technology for mechanical cleaning and crude oil tank, which is applied in the direction of multi-stage series refining process treatment, etc., can solve the problems of reducing extraction pressure and temperature, difficult to handle dirty oil, loss, etc., and achieves high dehydration rate and crude oil recovery rate, Low cost and simple operation
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Embodiment 1
[0027] The specific embodiment of the present invention will be described by taking the crude oil tank mechanical cleaning decontamination oil of a certain refinery as an example. The cleaning oil content is 59.6%, the water content is 39.2%, and the rest is solid matter.
[0028] Take 30g crude oil tank mechanical cleaning cleaning oil sample and put it in figure 1 In the beaker, at a water bath temperature of 80°C, mechanically stir the samples to mix them evenly, and pour them into figure 1 Add 60ml distilled water in the beaker, the demulsifier of 50 μ g / g (Akzo Nobel company, the oil-soluble demulsifier that model is DRC-168 and DRI-9030 forms by mass ratio is 3: 1 compound), in figure 1 The treatment was carried out in the ultrasonic generator shown, the ultrasonic frequency was selected as 28KHz, the ultrasonic power was 50, 60, 70, 80, 90 and 100W, and the ultrasonic time was 20min. The water content, oil content, and solid content were calculated, and the dehydratio...
Embodiment 2
[0031] Take 30g crude oil tank mechanical cleaning cleaning oil sample and put it in figure 1 In the beaker, the temperature of the water bath is 50, 60, 70, 80, 90 ° C, mechanically stirred to mix the samples evenly, respectively to figure 1 Add 60ml distilled water in the beaker, the demulsifier of 50 μ g / g (Akzo Nobel company, the oil-soluble demulsifier that model is DRC-168 and DRI-9030 forms by mass ratio is 3: 1 compound), in figure 1 Process in the ultrasonic generator shown, choose the ultrasonic frequency as 28KHz, ultrasonic power as 70W, ultrasonic time as 20min, after ultrasonic radiation, put it into the oven to settle for 6h, take the oil layer to measure its water content, oil content, solid content, and The dehydration rate and crude oil recovery rate were calculated, and the results are shown in Table 1.
Embodiment 3
[0033] Take 30g crude oil tank mechanical cleaning cleaning oil sample and put it in figure 1 In the beaker, the temperature of the water bath is 70°C, mechanically stirred to mix the samples evenly, respectively to the figure 1 Add 60ml distilled water in the beaker, the demulsifier of 50 μ g / g (Akzo Nobel company, the oil-soluble demulsifier that model is DRC-168 and DRI-9030 forms by mass ratio is 3: 1 compound), in figure 1Process in the ultrasonic generator shown above, choose ultrasonic at frequency of 28KHz, ultrasonic power of 70W, ultrasonic time of 0, 5, 10, 15, 20min respectively, after ultrasonic radiation, put it into the oven to settle for 6h, take the oil layer to measure its Water content, oil content, solid content, and calculated dehydration rate, crude oil recovery rate, the results are shown in Table 1.
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