Oily sludge recycling and treatment method

A technology for recycling and processing oil sludge, which is used in sludge treatment, water/sludge/sewage treatment, mining wastewater treatment, etc. It can solve the problems of high reaction conditions, lack of widespread promotion, air pollution, etc., and improve extraction efficiency. , to avoid the effect of low separation and recovery efficiency and low oil content

Inactive Publication Date: 2017-10-17
湖南云平环保科技有限公司
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the oily sludge is incinerated, a variety of harmful substances are almost completely removed, and the effect is good, but the investment is large, the cost is high, and combustion-supporting fuel is often added, the incineration process is accompanied by serious air pollution, and crude oil cannot be recovered, so The actual utilization rate of incinerators in our country is low; the hot washing method is the preferred method adopted by the U.S. Environmental Protection Agency to deal with oily sludge. This method has low energy consumption and low cost. However, this method still has the problem of low recovery efficiency and needs to be further improved; thermal desorption is a modified high-temperature treatment method for sludge. Oil sludge is heated to a certain temperature under anaerobic conditions to make hydrocarbons and Organic matter desorption, this process was rapidly developed and applied in foreign countries in the early 1990s. It is mainly suitable for tr

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The recovery treatment method of oil sludge provided by the invention may further comprise the steps:

[0029] Step S1: mixing oil sludge, water, and extractant in a mass ratio of 1:2:0.3; wherein, the extractant is a compounding agent comprising a low-boiling point organic solvent, a dispersant, and an anionic surfactant;

[0030] Specifically, the low-boiling point organic solvent, dispersant and anionic surfactant are compounded at a mass ratio of 1:0.3:0.5; wherein the low-boiling point organic solvent is selected from chloroform, the dispersant is selected from sodium silicate, and the anionic surfactant is selected from anionic Polyacrylamide;

[0031] The oil content of the sludge is 10%;

[0032] Step S2: ultrasonically oscillating the mixture in step S1 to form a mixed solution of oil sludge extractant;

[0033] Specifically, start the ultrasonic gas vibration device to ultrasonically oscillate the mixture in step S1 for 20 minutes, and the ultrasonic frequen...

Embodiment 2

[0039] The recovery treatment method of oil sludge provided by the invention may further comprise the steps:

[0040] Step S1: mixing oil sludge, water, and extractant in a mass ratio of 1:2:0.7; wherein, the extractant is a compounding agent comprising a low-boiling point organic solvent, a dispersant, and an anionic surfactant;

[0041] Specifically, the low-boiling point organic solvent, dispersant and anionic surfactant are compounded at a mass ratio of 1:0.5:0.8; wherein the low-boiling point organic solvent is selected from 1,1-dichloroethane, and the dispersant is selected from calcium stearate , the anionic surfactant is selected from dodecylbenzenesulfonate sodium amine;

[0042] The oil content of sludge is 20%;

[0043] Step S2: ultrasonically oscillating the mixture in step S1 to form a mixed solution of oil sludge extractant;

[0044] Specifically, start the ultrasonic gas vibration device to ultrasonically oscillate the mixture in step S1 for 30 minutes, and th...

Embodiment 3

[0050] The recovery treatment method of oil sludge provided by the invention may further comprise the steps:

[0051] Step S1: mixing oil sludge, water, and extractant in a mass ratio of 1:2:0.6; wherein, the extractant is a compounding agent comprising a low-boiling point organic solvent, a dispersant, and an anionic surfactant;

[0052] Specifically, the low-boiling point organic solvent, dispersant and anionic surfactant are compounded at a mass ratio of 1:0.5:0.7; wherein the low-boiling point organic solvent is selected from ethyl acetate, the dispersant is selected from sodium silicate, and the anionic surfactant is selected from Sodium amine dodecylbenzenesulfonate;

[0053] The oil content of sludge is 15%;

[0054] Step S2: ultrasonically oscillating the mixture in step S1 to form a mixed solution of oil sludge extractant;

[0055] Specifically, start the ultrasonic air vibration device to ultrasonically oscillate the mixture in step S1 for 25 minutes, and the ultraso...

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

No PUM Login to view more

Abstract

The invention discloses an oily sludge recycling and treatment method. The oily sludge recycling and treatment method comprises the following steps: mixing oily sludge, water and an extracting agent in a mass ratio of 1:2:(0.3-0.7), wherein the extracting agent is a mixture containing a low-boiling-point organic solvent, a dispersing agent and an anionic surfactant; carrying out ultrasonic oscillation on the mixture in the step S1, and forming an oily sludge extracting agent mixed solution; carrying out solid-liquid centrifugal separation on the oily sludge extracting agent mixed solution, so that deoiled sludge and oil-water extracting agent mixed solution are obtained; and carrying out water separation and oil purification and recycling on the oil-water extracting agent mixed solution. The oily sludge recycling and treatment method provided by the invention is low in separation cost and high in efficiency and can realize extraction and recycling of petroleum in oily sludge, so that resources are utilized again.

Description

【Technical field】 [0001] The invention relates to the technical field of sludge treatment, in particular to a method for recovering and treating oil sludge. 【Background technique】 [0002] Oil sludge refers to the sludge generated during the oil field production process due to crude oil extraction, storage, gathering, processing, and crude oil production fluid treatment. It is famous for containing crude oil or some components in crude oil, mainly divided into: landing sludge, clear tank sludge, flotation scum, etc. [0003] Oil sludge generally has an oil content of 10-50% and a water content of 40-90%. In my country's petrochemical industry, an average of 800,000 tons of tank bottom sludge and pond bottom sludge are produced every year. Shengli Oilfield produces 100,000 tons of oily sludge every year. Above, Dagang Oilfield produces about 150,000 tons of oily sludge every year, and Henan Oilfield produces 5×104m3 oily sludge every year. Oily sludge contains a large amount...

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): C02F11/00C10G1/04B01J19/10C02F103/10
CPCB01J19/10C02F11/00C02F2103/10C02F2305/04C10G1/04
Inventor 李启云
Owner 湖南云平环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap