Biodiesel production and use in oil sands processing
A biodiesel and microorganism technology, which is applied in the treatment of hydrocarbon oil, biofuels, and biomaterials, etc., can solve the problem of limited use of biodiesel
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Embodiment 1
[0052] Example 1 - Extraction of Heavy Oil from Solid Bitumen (pitch)
[0053] In the initial trials, biodiesel was tested on bitumen derived from the process of converting heavy oil to light oil by steam cracking. Bitumen is fluid at 150°C but very strong at room temperature. It was found that about 500 grams of robust bitumen could be easily dissolved in about 1 liter of biodiesel at room temperature. In another test, about 40 grams of bitumen (broken into bitumen pieces having an effective diameter of less than 10 mm) was mixed with about 80 grams of biodiesel in a mixer. After stirring for 1 hour, the solid block still existed. After two hours of stirring, all solid lumps disappeared and all bitumen lumps dissolved in the biodiesel. The viscosity of the resulting solution was extremely high.
Embodiment 2
[0054] Example 2 - Extraction of heavy oil from oil sands
[0055] In further tests, several oil sands samples were exposed to biodiesel under different conditions. The level of extraction was determined based on the color change in the biodiesel and residual solids were observed after testing. Use two different extraction containers. Use one container for vigorous mixing and the other for gentle mixing. In the vigorous mixing test, the solid sample and biodiesel were placed in a 2-liter stainless steel container. The contents of the vessel were then agitated for a preset time using a mixer with 3 impeller blades. The mixer has a variable speed controller (set in 0-10 ranges) that enables the degree of agitation to be adjusted. It was estimated that a stirrer setting of 10 means a speed of at least 500 rpm. All tests were performed at 2 gears. In the mild mixing test, solid samples and biodiesel were placed in 2-liter wide-mouth polypropylene bottles. The bottle is th...
Embodiment 3
[0058] Embodiment 3-change the ratio of biodiesel and heavy oil
[0059] Two tests were performed with different ratios of biodiesel to heavy oil. The heavy oil content in the test samples was assumed to be about 15%. In the first test, the measured ratio was 10 parts biodiesel to 1 part heavy oil (350 mL biodiesel and 200 grams oil sands). In a second test, the measured ratio was 5 parts biodiesel to 1 part heavy oil (175 mL biodiesel and 200 grams oil sands). The mixture was rolled overnight in a bottle as described in Example 1. After this procedure, all solid blocks were dissolved. The mixture consists of liquid and single grains of sand. This indicates that heavy oil extraction was near complete in both tests. Normal filtration is difficult due to the many tiny clay particles, but gravity settling is fairly quick. Sand was separated from the biodiesel and heavy oil mixture (5:1 ) using vacuum filtration. After separation, measure the viscosity of the diluted heav...
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