Coking wastewater oil displacing demulsifier as well as preparation technology and application thereof

A demulsifier and oil displacement technology, which is applied in the control of water treatment parameters, water treatment of special compounds, water pollutants, etc., can solve the problems of poor treatment effect of coking wastewater, and achieve the effects of environmental friendliness, simple formula and cost reduction

Active Publication Date: 2017-03-15
四川鸿康科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of poor treatment effect in the prior art for coking wastewater treatment, and provide a coking wastewater flooding demulsifier

Method used

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  • Coking wastewater oil displacing demulsifier as well as preparation technology and application thereof
  • Coking wastewater oil displacing demulsifier as well as preparation technology and application thereof
  • Coking wastewater oil displacing demulsifier as well as preparation technology and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 The oil displacement demulsifier that this embodiment enumerates has the following composition (volume percentage):

[0033]

[0034]

[0035] The mass percentage concentration of above-mentioned dodecyl dimethyl benzyl ammonium chloride is 44%, the mass percentage concentration of tetradecyl dimethyl benzyl ammonium chloride is 50%, and the ionicity of cationic polyacrylamide is 40 %.

[0036] Preparation process: First, add cationic polyacrylamide to the reaction kettle in proportion; add 50% of the water consumption under continuous stirring, and continue stirring for 10 minutes, then add dodecyl dimethyl benzyl chloride in proportion Add ammonium chloride, tetradecyldimethylbenzyl ammonium chloride and vinyl polysiloxane emulsion, stir while adding, and slowly raise the temperature to 35 ° C, after stirring for 50 minutes, finally add the remaining water in proportion, stir Stop heating after 20 minutes, stir while cooling, and cool to room tempe...

Embodiment 2

[0037] Embodiment 2 The oil displacement demulsifier that this embodiment enumerates has the following composition (volume percentage):

[0038]

[0039]The mass percentage concentration of above-mentioned dodecyl dimethyl benzyl ammonium chloride is 44%, the mass percentage concentration of tetradecyl dimethyl benzyl ammonium chloride is 50%, and the ionicity of cationic polyacrylamide is 50 %.

[0040] Preparation process: First, add cationic polyacrylamide to the reaction kettle in proportion; add 60% of the water consumption under continuous stirring, and continue stirring for 20 minutes, then add dodecyl dimethyl benzyl chloride in proportion Add ammonium chloride, tetradecyldimethylbenzyl ammonium chloride and vinyl polysiloxane emulsion, stir while adding, and slowly raise the temperature to 40 ° C, stir for 55 minutes, finally add the remaining water in proportion, stir Stop heating after 25 minutes, stir while cooling, and cool to room temperature to obtain the oi...

Embodiment 3

[0041] Embodiment 3 The oil displacement demulsifier that this embodiment enumerates has the following composition (volume percentage):

[0042]

[0043] Wherein the mass percentage concentration of dodecyl dimethyl benzyl ammonium chloride is 44%, the mass percentage concentration of tetradecyl dimethyl benzyl ammonium chloride is 50%, and the ionicity of cationic polyacrylamide is 45% %.

[0044] Preparation process: First, add cationic polyacrylamide to the reaction kettle in proportion; add 55% of the water consumption under continuous stirring, and continue stirring for 15 minutes, then add dodecyl dimethyl benzyl chloride in proportion Ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride and methoxypolysiloxane emulsion, stirring while adding, and slowly raising the temperature to 38 ° C, stirring for 55 minutes, and finally adding the remaining water in proportion, After stirring for 25 minutes, stop heating, stir while cooling, and cool to room temperatu...

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PUM

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Abstract

The invention relates to the technical field of wastewater treatment and particularly relates to an oil displacing demulsifier for coking wastewater treatment. The oil displacing demulsifier comprises the following components in percentage by volume: 20-50% of dodecyl dimethyl benzyl ammonium chloride, 10-30% of tetradecyl dimethyl benzyl ammonium chloride, 0.1-0.5% of cationic polyacrylamide, 0.1-0.3% of polysiloxane emulsion and the balance of water. The invention also discloses a preparation technology and application of the oil displacing demulsifier. The oil displacing demulsifier provided by the invention is of a simple formula; the components realize a synergistic effect; and the oil, ammonia nitrogen, CODcr and suspending matters in the coking wastewater can be effectively removed.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an oil displacement demulsifier for coking wastewater treatment to reduce oil, ammonia nitrogen, COD, suspended solids and turbidity in wastewater, as well as its preparation process and application. Background technique [0002] Coking wastewater is industrial wastewater containing volatile phenols, polycyclic aromatic hydrocarbons, and heterocyclic compounds such as oxygen, sulfur, and nitrogen produced during coking and coal gas high-temperature dry distillation, purification, and by-product recovery. It is a kind of industrial wastewater with high CODcr, high phenol value, A kind of industrial organic wastewater with high ammonia nitrogen and difficult to treat. There are three main sources: one is residual ammonia water, which is the waste water produced in coal dry distillation and gas cooling, and its water volume accounts for more than half of the...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/40C02F1/52C02F1/56C02F1/54C02F103/34C02F101/32C02F101/16
CPCC02F1/00C02F1/40C02F1/52C02F1/54C02F1/56C02F2101/16C02F2101/32C02F2103/34C02F2209/08C02F2209/10C02F2209/11C02F2305/04
Inventor 殷捷李平郑文强杨慧林
Owner 四川鸿康科技股份有限公司
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