A kind of organosilicon-demulsification flocculant and its application
A technology of organic silicon and flocculant, which is applied in the direction of flocculation/sedimentation water/sewage treatment, natural water treatment, separation methods, etc., can solve problems such as difficult oil removal effect, polluted oil products, secondary pollution, etc., to reduce oil and water The effect of interfacial film strength, high oil removal rate and fast settling speed
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Embodiment 1
[0016] Take 50 mL of the oily sewage at the top of the decompression tower of the W refinery into a graduated bottle, and add 100 mg / L of water treatment agent (NM:PDMDAAC:different types of silicone surfactant mass concentration ratio is 10:3:1) , settled at 60°C for 2 h, and the oil content in the treated water was measured by UV spectrophotometry. The experimental results are shown in Table 1.
[0017] Table 1
[0018]
[0019] Obviously, when NM and PDMDAAC are compounded with silicone surfactant Y1714 or silicone surfactant 559, 100 mg / L water treatment agent is added, and the oil content in the water is reduced from 2161.1 mg / L to 2161.1 mg / L after settling at 60°C for 2 h. decreased to 311.2 mg / L and 340.3 mg / L, and the oil removal rates reached 85.6 % and 84.3 %, respectively. Among them, NM, PDMDAAC and silicone Y1714 have a better degreasing effect.
Embodiment 2
[0021] Take 50 mL of oily sewage from the top of W refining vacuum tower in a graduated bottle, add different concentrations of water treatment agents (NM:PDMDAAC:Y1714 mass concentration ratio is 10:3:1), settle at 60°C for 2h, The oil content in the treated water was measured by UV spectrophotometry. The experimental results are shown in Table 1.
[0022] Table 2
[0023]
[0024] Obviously, when 30-80 mg / L water treatment agent is added, the oil content in the water will drop from 1910.5 mg / L to about 200 mg / L when it settles at 60°C for 2 hours, and the oil removal rate will reach more than 85%.
Embodiment 3
[0026] Take 50 mL of oily sewage from the top of W refinery decompression tower in a graduated bottle, add 40 mg / L of water treatment agent (NM:PDMDAAC:Y1714 mass concentration ratio is 10:3:1), and settle at 60°C At different times, the oil content in the treated water was measured by UV spectrophotometry. The experimental results are shown in Table 3.
[0027] table 3
[0028]
[0029] Obviously, when 40 mg / L water treatment agent is added, the oil removal rate can reach about 91.0% when it settles at 60°C for 30-45 minutes.
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