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Treatment method of polymer flooding oil production sewerage

A treatment method and technology for oily sewage, applied in mining wastewater treatment, water/sewage treatment, adsorption water/sewage treatment, etc., to achieve the effects of good adsorption performance, high COD removal rate and simple method

Active Publication Date: 2010-12-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by this patent is not suitable for the treatment of HPAM-containing oil extraction wastewater. The patent uses water, or an aqueous solution of oxides, hydroxides, and carbonates of alkali metals and alkaline earth metals to regenerate the spent catalyst, and the regeneration solution is discharged after regeneration. Or recycle the organic matter in it, it can be seen that this method can only transfer HPAM and AM to water instead of decomposing them to completely eliminate the harm to the environment

Method used

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  • Treatment method of polymer flooding oil production sewerage
  • Treatment method of polymer flooding oil production sewerage
  • Treatment method of polymer flooding oil production sewerage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example illustrates the results of different methods for treating the effluent of an oilfield joint station. See Table 1 for the water quality of the sewage. The spent catalytic cracking catalyst comes from the Cangzhou Oil Refinery with a specific surface area of ​​211m 2 / g, the pore volume is 0.203mL / g. Experimental method: Take 150mL of sewage from the joint station, add it to a 250mL beaker, add 5 grams of spent catalyst, 5 grams of activated carbon fiber, PAM+Al 2 (SO 4 ) 3 2mg / L+50mg / L, stirring for 2h, rotating speed 150r / min, conduct photocatalytic experiment on the water in the No. 4 beaker, filter the water in the No. 5 beaker, take samples to measure COD and HPAM after the experiment, the test results are shown in Table 2 .

[0024] Table 1

[0025]

[0026] *: The content of organic matter refers to the weight loss on ignition of the solid obtained from the total solution after burning at 550°C.

[0027] Table 2

[0028]

[0029] *The ligh...

Embodiment 2

[0032]This example is a secondary adsorption experiment of spent catalysts on polymer flooding oil recovery wastewater. See Example 1 for the experimental water quality and spent catalyst composition.

[0033] Experimental method: Take 150mL of sewage from the joint station, add it to a 250mL beaker, add 5 grams of spent catalyst into the beaker, stir for 2 hours, rotate at a speed of 150r / min, and take a sample to measure COD Cr and HPAM, add 5 grams of waste catalyst to the effluent for secondary adsorption, and take samples to measure COD after adsorption Cr and HPAM, the results are shown in Table 3.

[0034] table 3

[0035]

[0036] The data in Table 3 show that the waste catalyst has a significant effect on the sewage treatment of the combined station, and the COD of the sewage after the second adsorption Cr The value can be reduced to 19.2mg / L, and HPAM can be reduced to 7.1mg / L, indicating that the spent catalyst has a good complexing and adsorption effect on oi...

Embodiment 3

[0038] This example shows the optimal adsorption capacity of the spent catalyst to the polyacrylamide solution. Prepare a polyacrylamide standard solution with a concentration of 200mg / L, add different quality spent catalysts, vibrate on a shaking table for 1.5h, and take a sample to measure the COD of sewage after standing for 0.5h Cr values, and the results are shown in Table 4.

[0039] The optimal static adsorption capacity of the spent catalyst on the polyacrylamide solution was investigated, and the results are shown in Table 4.

[0040] Table 4

[0041]

[0042] From the test results in Table 4, it can be seen that under the test conditions, the waste catalyst has the best adsorption performance for polyacrylamide-containing wastewater, and the adsorption performance decreases when the amount of adsorbent is reduced or increased, and the adsorption capacity for polyacrylamide solution is static The best adsorption capacity is: 40.6mg / g.

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Abstract

The invention relates to a treatment method of polymer flooding oil production sewerage, comprising the following steps: fully contacting a catalytic cracking waste catalyst and the oil production sewerage containing HPAM, and enabling the dead catalyst to absorb organisms in sewerage; and heating and regenerating the catalytic cracking dead catalyst reaching adsorption saturation to recover for sewage treatment. The method of the invention is especially suitable for treating the oil production sewerage containing the HPAM.

Description

technical field [0001] The invention relates to a treatment method for polymer flooding oil production sewage, in particular to a treatment method for oil production sewage containing polyacrylamide. Background technique [0002] Petroleum is an important non-renewable energy source and industrial raw material. In order to alleviate the contradiction between oil supply and demand, countries all over the world are increasing their efforts to explore new oil fields, and at the same time attach great importance to improving the recovery rate of existing oil fields. Polymer flooding technology is a technology used in the late stage of oilfield development. Since the "Ninth Five-Year Plan", this technology has made great progress in my country. At present, the annual injection volume of polymer dry powder in my country has reached more than 10,000 tons, and its scale is far ahead in the world. status, followed by the generation of large amounts of polymer produced water. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/58B01J20/18C02F103/10C02F101/38
Inventor 马欣张莉
Owner CHINA PETROLEUM & CHEM CORP
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