A method for hydrogenation treatment of catering waste oil
A technology for catering waste oil and hydrotreating, which is used in fatty acid hydrogenation, fat oil/fat refining, and fat production, etc., can solve problems such as corrosion of hydrogenation units, and achieve the effect of reducing corrosion and solving the effect of corrosion.
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Embodiment 1
[0040] The aforementioned hydrogenation catalyst C1 was loaded into the fixed-bed hydrogenation reactor, and the loading amount of the catalyst was 100 ml. Fill the dechlorination reactor with 100ml of WGL-A dechlorination agent. The waste cooking oil raw material enters from the upper part of the hydrogenation reactor, and the hydrogen enters from the lower part of the hydrogenation reactor. The stream discharged from the top of the hydrogenation reactor directly enters the dechlorination reactor for reaction. The liquid phase flow at the bottom of the dechlorination reactor and the bottom flow of the hydrogenation reactor are mixed and then enter the separation system, and after separation, hydrogenated refined oil of catering waste oil is obtained.
[0041] The operating conditions of the hydrogenation reactor are: the average temperature of the reaction bed is 320°C, the pressure is 6.4MPa, the injection volume of waste cooking oil is 100ml / h, and the hydrogen volume is 1...
Embodiment 2
[0048] This test continues the long-period stability operation test on the basis of Example 1, and investigates the chlorine content in the refined oil and water during the long-period operation. The refined oil and water were analyzed respectively at the 200h, 500h, 1000h, and 1500h of device operation, and the results are shown in Table 2 and Table 3.
[0049] Table 2 Refined oil properties
[0050] Running time / h 200 500 1000 1500 Density at 20°C / (kg / m 3 )
0.7777 0.7778 0.7777 0.7778 Cl content / (μg / g) 0.18 0.20 0.19 0.17 Na content / (μg / g) <0.1
<0.1
<0.1
<0.1
O content / % <0.2
<0.2
<0.2
<0.2
Total acid value / (mgKOH / g) <0.02
<0.02
<0.02
<0.02
Freezing point / ℃ 16 17 16 16 Distillation range, D-86 / ℃ IBP 197 198 197 197 50 304 304 305 304 95 333 334 333 334
[0051] Table 3 Chlorine content in water
[0052] Running time / h 200 500 ...
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