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Organosilicone-break-emulsification agent and application thereof

A technology of organic silicon and flocculant, which is applied in the direction of flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, liquid separation, etc. It can solve problems such as difficult oil removal effect, polluted oil products, and secondary pollution. , to achieve the effects of weakening the strength of the oil-water interface film, high oil removal rate and fast settlement speed

Active Publication Date: 2017-03-08
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional demulsifiers, flocculants, and their compound combinations are difficult to achieve better oil removal effects, and if inorganic flocculants are used, a certain amount of floc precipitation will occur, which will pollute the oil on the one hand and produce Sludge causes secondary pollution

Method used

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  • Organosilicone-break-emulsification agent and application thereof
  • Organosilicone-break-emulsification agent and application thereof
  • Organosilicone-break-emulsification agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

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, PDMDAAC and silicone surfactant Y1714 or silicone surfactant 559 were compounded, the oil content in the water decreased from 2161.1 mg / L to 2161.1 mg / L after adding 100 mg / L water treatment agent and settling at 60 °C for 2 h. 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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PUM

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Abstract

The invention discloses an organosilicone-break-emulsification agent and an application thereof. The water treatment agent of the organosilicone-break-emulsification agent is prepared from cationic demulsifie (NM), flocculant (PDMNAAC)and organosilicone surfactant (Y1714) with a mass concentration ratio of 10: 3: 1. The specific use method aiming at W refining decompression tower top oily sewage is adding the organosilicone-break-emulsification agent of 30-80 mg / L to achieve an oil removal rate of 85% or higher. The effects of demulsification by the demulsifie NM, adsorption bridging and electrical neutralization by the flocculant PDMDAAC, oil-water interface tension decreasing and oil-water interface film tensity reducing by the organosilicone surfactant Y1714 and the like are synthetically developed through the compounding of cationic demulsifie (NM), flocculant (PDMNAAC)and organosilicone surfactant (Y1714). Accordingly, the effect result of oil-water separation is achieved. The organosilicone-break-emulsification agent and the application thereof has the advantages of requiring little water treatment agent dosage, producing little sediment and being high in oil removal rate in the aspect of refining decompression tower top sewage treatment and has certain referential value to refining decompression tower top sewage treatment.

Description

technical field [0001] The invention relates to an organosilicon-demulsification flocculant and its application, in particular to an organosilicon-demulsification flocculant used for treating oily sewage at the top of a decompression tower in refinery and its application. Background technique [0002] With the increasing amount of emulsified sewage discharged from atmospheric and vacuum distillation units in the process of petroleum processing, this kind of oily sewage oil-water emulsion is difficult to separate, and usually has a large oil content and complex composition (contains more alkanes, halogenated hydrocarbons, Aromatic hydrocarbon ethers and mercaptans, etc.) and high processing difficulty. As a result, the treatment efficiency of the biochemical treatment device is low. If the oil content in the discharged water exceeds the standard, it will not only cause environmental pollution, but also cause a large amount of oil loss. [0003] Domestic refinery wastewater a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/54C02F1/56C02F1/40C02F103/36
CPCC02F1/40C02F1/54C02F1/545C02F1/56C02F2103/365
Inventor 何丹农严良童琴代卫国高小迪金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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