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Silicon removing agent, and thick oil sewage processing technology

A treatment process and technology of silicon agent, applied in the field of silicon remover and heavy oil sewage treatment process, can solve the problem of poor silicon removal effect of silicon remover, and achieve the advantages of enhancing silicon removal effect, increasing charge adsorption and reducing cost. Effect

Inactive Publication Date: 2019-03-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a treatment process for silicon-removing agent and heavy oil sewage, to solve the problem of poor silicon-removing effect of silicon-removing agent in the prior art

Method used

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  • Silicon removing agent, and thick oil sewage processing technology
  • Silicon removing agent, and thick oil sewage processing technology
  • Silicon removing agent, and thick oil sewage processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In Embodiment 1 of the present invention, heavy oil sewage sample 1 is taken from a certain oilfield sewage treatment station, and the water quality parameters of heavy oil sewage are as shown in Table 1:

[0048] Table 1 Heavy oil sewage sample - water quality parameters

[0049] parameter

concentration

parameter

concentration

temperature / ℃

90.5

CO 3 2- Content / mg / L

0

pH

7.2

HCO 3 - Content / mg / L

346.06

Oil content / mg / L

102.4

Ca 2+ Content / mg / L

21.61

Suspended matter / mg / L

91.5

Mg 2+ Content / mg / L

4.37

Silicon content / mg / L

335.6

K + +Na + Content / mg / L

847.69

Cl - Content / mg / L

1112.14

Salinity

2209.89

SO 4 2- Content / mg / L

51.055

water type

NaHCO 3 type

[0050] Add heavy oily sewage sample 1 to the experimental device, add 50mg / L silicon remover to the experimental device at 80°C, stir the sewage in the expe...

Embodiment 2

[0065] In Embodiment 2 of the present invention, the heavy oil sewage sample 2 is taken from an oil field sewage treatment station, and the water quality parameters of the heavy oil sewage are as shown in Table 3:

[0066] Table 3 Water quality parameters of heavy oil sewage samples

[0067] parameter

concentration

parameter

concentration

temperature / ℃

90.5

CO 3 2- Content / mg / L

0

pH

7.0

HCO 3 - Content / mg / L

467.04

Oil content / mg / L

98.3

Ca 2+ Content / mg / L

35.49

Suspended matter / mg / L

76.1

Mg 2+ Content / mg / L

7.83

Silicon content / mg / L

304.9

K + +Na + Content / mg / L

1257.46

Cl - Content / mg / L

980.2

Salinity

3042.71

SO 4 2- Content / mg / L

72.18

water type

NaHCO 3 type

[0068] Add heavy oil sewage sample 2 into the experimental device, add 200mg / L silicon remover to the experimental device at a reaction temperature of 50°C...

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Abstract

The invention provides a silicon removing agent, and thick oil sewage processing technology. The silicon removing agent comprises, by mass, 10 to 15% of a magnesium salt, 2 to 5% of a meta-aluminate,and 5 to 10% of an inorganic base. The silicon removing agent is capable of solving a problem in the prior art that silicon removing effect of conventional silicon removing agents is poor.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a silicon removal agent and a treatment process for heavy oil sewage. Background technique [0002] During the exploitation of heavy oil, crude oil is often mixed with a large amount of sewage. After separating these sewage from crude oil, oilfield produced water is formed, also known as heavy oil sewage. The heavy oil sewage can be reused in the gas injection boiler after advanced treatment, which can not only solve the water source problem in the heavy oil exploitation, but also make the waste water reused and save the water source. [0003] Due to the high concentration of silicon in the heavy oil sewage, if the silicon in the heavy oil sewage is not removed before the heavy oil sewage is discharged into the steam injection boiler, silicon scale will be formed in the gas injection boiler and gas injection pipeline. Since the silica scale is difficult to remove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/52C02F103/10C02F101/10
CPCC02F1/00C02F1/281C02F1/52C02F2101/10C02F2103/10
Inventor 斯绍雄严忠宫兆波王雨刘鹏飞王伟朱树青
Owner PETROCHINA CO LTD