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Crude-oil sewage treating agent

A sewage treatment agent and crude oil technology, which is applied in the directions of grease/oily substance/floating matter removal device, liquid separation, separation method, etc. It can solve the problems of difficult to achieve oil-water separation and sewage purification indicators, and achieve the effect of accelerating floating

Inactive Publication Date: 2013-03-06
SHANDONG TAIDE NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it difficult to achieve qualified oil-water separation and sewage purification indicators using traditional sewage treatment agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Evaluation of oil-water separation effect

[0016] Preparation and application of crude oil sewage treatment agent

[0017] Component ratio (by mass): non-ionic surfactant: 25%, cationic polyacrylamide (relative molecular mass: 10 million, cationic degree: 12%): 1%; methanol: 35%, distilled water: 39% .

[0018] Preparation method: According to the formula, use distilled water as the reagent and mix it uniformly by mechanical stirring.

[0019] Experimental object: The fluid was taken from the well drainage of a joint station, and the sample was the production fluid of a team in the polymer injection area of ​​Gudao Oil Production Plant.

[0020] Experimental method: Preheat the sewage sample taken on the same day in a constant temperature water bath at 50°C for 10 minutes, then add a predetermined dose of medicament, stir at 200 rpm for 20 minutes, then keep warm at 50°C for 30 minutes, and pipette 50 ml of Water samples were extracted with petroleum ether with a bo...

Embodiment 2

[0025] Demulsification Performance Evaluation

[0026] The composition ratio, the preparation method and the test object are as above.

[0027] Experimental conditions: Divide the oil samples taken on the day into 80mL stoppered measuring cylinders, preheat at 50°C for 15 minutes, then add the predetermined dose of medicament, shake well and place in a glass constant temperature water bath at 50°C, according to " The demulsifier uses the performance test method (bottle test method)" standard, and records the water output at different times.

[0028] The agent and the on-site water treatment agent (XPI-5085B / LGS-2) were used to demulsify the experimental subjects, and the results were recorded after 90 minutes.

[0029] Experimental results show that when the dosing concentration of the sewage treatment agent formulation of the present invention is 25 to 30 mg / L, its demulsification and dehydration ability is comparable to that of an on-site sewage treatment agent of 100 mg / ...

Embodiment 3

[0031] The composition ratio and the preparation method are as above.

[0032] Experimental conditions: first prepare 5000mg / L polyacrylamide mother liquor with distilled water, and then dilute it to 1500mg / L with water (clean water or sewage) containing different concentrations of agents, according to "Determination of the Properties of Acrylamide Polymers for Oil Displacement" standard to measure the viscosity of polymer solutions.

[0033] It can be seen from the table that the formulation of the sewage treatment agent of the present invention has no adverse effect on the viscosity of the polyacrylamide (3530S) solution within the concentration range of 5-30mg / L.

[0034]

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PUM

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Abstract

The invention belongs to the field of crude-oil sewage treatment, and more particularly relates to a crude-oil sewage treating agent. The crude-oil sewage treating agent comprises a demulsifying agent, a flocculating agent and a solvent, wherein the mass ratio of the demulsifying agent, the flocculating agent and the solvent is 25:1:74. The crude-oil sewage treating agent has the beneficial effects that the non-ionic type surface active agent is adopted, the oil-water interface of emulsified particles can be quickly reached, a water layer is released, so that emulsified oil drops are free; simultaneously the molecules of the surface active agent also can play a role of bridging, the oil drops are effectively condensed, the upward floating of the oil drops is accelerated; and in addition, good compatibility of the non-ionic type reagent is beneficial to the synergistic effect of multiple chemical components, and the purpose of multiple functions with one agent in the process of sewage treatment is realized.

Description

technical field [0001] The invention belongs to the field of crude oil sewage treatment, and more specifically relates to a crude oil sewage treatment agent. Background technique [0002] With the continuous development of my country's national economy and the improvement of people's living standards, the demand for energy, especially oil, is increasing day by day. In addition to expanding imports and actively looking for and developing new oil fields, maintaining stable production of domestic traditional oil fields is also an important measure to ensure oil supply. After decades of development, major domestic onshore oil fields have entered a period of high water cut. The oil flooding technology using polyacrylamide solution as the displacement fluid (referred to as polymer flooding) has become an important technical means to improve oil recovery. [0003] Polymer flooding results in the presence of polymers and other chemicals in the oil production wastewater, which make...

Claims

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Application Information

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IPC IPC(8): C02F1/40
Inventor 张成如阚红静赵玉
Owner SHANDONG TAIDE NEW ENERGY
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