Ternary polymer degreasing agent used for thickened oil thermal production sewage treatment

A ternary polymer and heavy oil thermal recovery technology, applied in special compound water treatment, water/sewage treatment, mining wastewater treatment, etc., can solve problems such as corrosion, achieve less consumption, high oil removal efficiency, and source of raw materials wide range of effects

Active Publication Date: 2017-04-05
SHENGLI OIL FIELD FANGYUAN CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Patent ZL201410254042.8 "a composite flocculation degreasing agent for oily sewage treatment" is made of aluminum sulfate, magnesium chloride, magnesium hydroxide, bentonite and p

Method used

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  • Ternary polymer degreasing agent used for thickened oil thermal production sewage treatment
  • Ternary polymer degreasing agent used for thickened oil thermal production sewage treatment
  • Ternary polymer degreasing agent used for thickened oil thermal production sewage treatment

Examples

Experimental program
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Example Embodiment

[0034] Example 1: Degreaser C 1 And its preparation method

[0035] (1) Degreaser C 1 The composition, components, and molecular weight of are as follows:

[0036] Degreaser C 1 It is prepared from acrylamide, N-benzyl-N-ethylacrylamide and N-vinylpyrrolidone in a molar ratio of 1:1.1:1.5 by free radical micellar polymerization, with an average molecular weight of 42,000.

[0037] (2) Degreaser C 1 The preparation method is as follows:

[0038] ① Add 1052g of deionized water and 1.1mol of N-benzyl-N-ethylacrylamide into a three-necked flask equipped with a thermometer and a stirring rod. The temperature is raised to 32°C at a stirring rate of 300rpm and the temperature is maintained for 60min;

[0039] ②Add 1 mol of acrylamide to the above three-necked flask, and raise the temperature to 50°C, add 2.55g sodium lauryl sulfate, stir for 30min, the stirring rate is 550rpm, after the stirring time is over, the temperature rises to 68°C, Constant temperature for 50min to obtain the mixture;...

Example

[0042] Example 2: Degreaser C 2 And its preparation method

[0043] (1) Degreaser C 2 The composition, components, and molecular weight of are as follows:

[0044] Degreaser C 2 It is prepared from acrylamide, N-benzyl-N-ethylacrylamide and N-vinylpyrrolidone in a molar ratio of 1:0.1:0.5 by free radical micellar polymerization, with an average molecular weight of 12,000.

[0045] (2) Degreaser C 2 The preparation method is as follows:

[0046] ①Add 710.8g of deionized water and 0.1mol of N-benzyl-N-ethylacrylamide into a three-necked flask equipped with a thermometer and a stirring rod, and heat up to 30°C at a stirring rate of 400rpm, and hold the temperature for 45min;

[0047] ②Put 1 mol of acrylamide into the above three-necked flask, and raise the temperature to 45℃, add 1.42g sodium dodecyl sulfonate, stir for 25min, the stirring rate is 600rpm, after the stirring time, the temperature rises to 70℃ , The mixture is obtained at a constant temperature of 30 min;

[0048] ③Adjust th...

Example Embodiment

[0050] Example 3: Degreaser C 3 And its preparation method

[0051] (1) Degreaser C 3 The composition, components, and molecular weight of are as follows:

[0052] Degreaser C 3 It is prepared from acrylamide, N-benzyl-N-ethylacrylamide and N-vinylpyrrolidone in a molar ratio of 1:1.5:3 through a free radical micellar polymerization method, with an average molecular weight of 86,000.

[0053] (2) Degreaser C 3 The preparation method is as follows:

[0054] ① Add 1421.6g of deionized water and 1.5mol of N-benzyl-N-ethylacrylamide into a three-necked flask equipped with a thermometer and a stirring rod, and heat up to 35°C at a stirring rate of 500rpm, and keep the temperature constant for 30min;

[0055] ②Put 1 mol of acrylamide into the above three-necked flask, and raise the temperature to 40°C, add 3.55g sodium lauryl sulfate, stir for 20min, the stirring rate is 500rpm, after the stirring time is over, the temperature rises to 65°C, Keep the mixture at constant temperature for 40 mi...

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Abstract

The invention belongs to the technical field of oil field sewage treatment, and particularly relates to a ternary polymer degreasing agent used for thickened oil thermal production sewage treatment. The degreasing agent is prepared by acrylamide, N-benzyl-N-ethylacrylamide and N-vinyl pyrrolidone through a free-radical micelle copolymerization method. The molecular weight of the degreasing agent is 10000-90000, and 30000-50000 preferably. The molar ratio of the acrylamide to the N-benzyl-N-ethylacrylamide to the N-vinyl pyrrolidone is 1:0.1-1.5:0.5-3, and 1:1.1:1.5 preferably. The degreasing agent disclosed by the invention is easy to prepare, high in temperature resistance and salt tolerance and low in cost, and the degreasing rate can reach 96% or above. Moreover, recovered oil generated in the separation process cannot influence subsequent crude oil dehydration. Therefore, the ternary polymer degreasing agent can be widely applied to degreasing technologies of oil field thickened oil thermal production sewage.

Description

technical field [0001] The invention relates to a degreasing agent used for oilfield sewage treatment, in particular to a ternary polymer degreasing agent used for heavy oil thermal recovery sewage treatment. Background technique [0002] The viscosity of heavy oil is high, and the sewage treatment produced by mining has always been one of the important links restricting its development. After the crude oil undergoes thermochemical sedimentation treatment in the dehydration process for a period of time, the sediment and other mechanical impurities enter the sewage system together, so that the total amount of suspended solids in the sewage reaches about 20,000mg / L. It makes sewage treatment more difficult. At the same time, in order to lift the ultra-heavy oil to the ground, some surfactants, such as sulfonate and other substances, are added during the oil recovery process, so that the produced fluid needs to be demulsified and dehydrated, resulting in a large amount of chem...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/56C02F1/28C08F220/56C08F220/54C08F226/10C02F103/10C02F101/32
CPCC02F1/285C02F1/56C02F1/58C02F2101/32C02F2103/10C02F2305/04C08F220/56C08F220/54C08F226/10
Inventor 赵世芬
Owner SHENGLI OIL FIELD FANGYUAN CHEM IND
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