Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and apparatus for removing organic substance from oily water from oilfield

A technology for organics and oil fields, applied in separation methods, chemical instruments and methods, petroleum industry, etc., and can solve the problems of reducing organic compounds, unclear, and undisclosed processing technologies.

Inactive Publication Date: 2007-10-03
HITACHI LTD
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of oxidizing agents such as hypochlorous acid may break down the oil to some extent, but whether it is effective in reducing dissolved organic compounds is unclear
[0009] In addition, in Japanese Patent Laid-Open No. 2000-93957, a technology for purifying water containing a small amount of organic matter such as drinking water through a water purification membrane containing zeolite is disclosed, but it does not disclose oily water containing a large amount of oil and organic compounds. water treatment technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for removing organic substance from oily water from oilfield
  • Method and apparatus for removing organic substance from oily water from oilfield
  • Method and apparatus for removing organic substance from oily water from oilfield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Hereinafter, one embodiment of the present invention will be described based on FIG. 1 . The wastewater treatment device 10 as an embodiment of the present invention is composed of a magnetic separation device 11 for separating oil from oily water in an oil field, an electrolytic cell 14 , a COD adsorption tank 17 and an exhaust combustion tower 16 .

[0088] The operation of the wastewater treatment device will be described below. First, the oily water 1 of the oil field is installed in the raw water tank 2 . In the oily water of the oil field, the oil is dispersed by emulsification. In addition to organic components and inorganic ions represented by sodium, oily water in oilfields also contains tiny mud, sand and other solid substances. Therefore, the oily water 1 in the oil field is sent to the coagulation tank 3, and a coagulant such as ferric sulfate or polyaluminum chloride and a magnet (Fe 3 o 4 ), γ-hematite (Fe 2 o 3 ) and other magnetic particles, the pr...

Embodiment 2

[0105] Example 2 is an example of test results using the apparatus shown in Example 1.

[0106] Table 3 shows the COD in the electrolysis process and adsorption process Mn value measurement results.

[0107] processing content

COD Mn

Acetic acid

propionic acid

Methanol

1 treatment water

oil-water separation

386

1740

390

-

2 times treated water

electrolysis

270

1200

222

150

3 times treated water

Adsorption treatment

110

410

90

70

[0108] Unit: mg / L

[0109] The primary treated water in Table 3 is the analysis result of sampling in the primary treated water sampling port 31 in FIG. 1 . The secondary treated water is treated by generating an electric field between the electrode 91 and the electrode 92 provided in the electrolytic cell 14 of the electrolytic device 13 using the electric field applying device 13 . ...

Embodiment 3

[0121] Example 3 Figure 6 shows the results of regeneration of the adsorbent of the present invention. That is to say, the CO produced by the adsorbent during repeated regeneration 2 , a graph showing the relationship between the amount of CO and hydrocarbons produced and the heating temperature.

[0122] As shown in Figure 6, using adsorbents loaded with various concentrations of catalytic components, the adsorption under the same conditions was carried out, and the temperature-rising detachment test was carried out under the same conditions, and the CO 2 And / or CO gas produces a peak temperature, from which the most suitable catalyst type and concentration range can be determined.

[0123] The experimental conditions used to obtain the results of Fig. 6 are as follows. Use of SiO in Synthetic Zeolite ZSM-5 2 / Al 2 o 3 Zeolite with a ratio of 90 was used as the adsorbent. First, put 5.0 g of the above-mentioned adsorbent into a 200 mL beaker, then put 50 mL of the secon...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

A method and an apparatus for removing dissolved organic substances from an oily water obtained as a by-product from an oilfield, characterized in that an oily water obtained as a by-product from an oilfield by separating a crude oil from a crude oil / brine mixture is brought into contact with an adsorbent to adsorptively remove organic substances dissolved in the water containing oil suspended therein and that the adsorbent is regenerated.

Description

technical field [0001] The invention relates to a treatment method and a treatment device for oily water in an oil field that is separated and produced from a mixture of crude oil and brine in an oil field area, and particularly relates to a method and a device for effectively removing organic matter such as oil droplets and dissolved organic compounds contained in oily water in an oil field . Background technique [0002] In an oilfield area, crude oil and brine are produced as a mixture in a mixed state, and the crude oil and brine are separated from the mixture to generate oilfield oily water. Since oilfield oily water contains considerable oil droplets and dissolved organic compounds, there is a risk of environmental damage if it is returned directly to the sea or lake. [0003] Conventionally, various methods have been studied for the purpose of separating and removing oil contained in oily water produced in oil fields. For example, JP-A-2003-144805 discloses emulsify...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F1/28B01J20/34B01J20/18C02F1/46
Inventor 荒户利昭饭塚秀宏望月明铃木朋子本地章夫小松茂三郎矶上尚志佐佐木洋
Owner HITACHI LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com