Method and device for pretreating thickened oil refining sewage

A technology for refining and chemical sewage and pretreatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc.
CN103043829AActive Publication Date: 2013-04-17CHINA UNIV OF PETROLEUM (BEIJING)
7 Cites 26 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Publication Date
2013-04-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method and a device for pretreating thickened oil refining sewage. The method comprises the steps of homogeneous sedimentation, emulsion breaking oil removal and sulphur removal, coagulating sedimentation sulphur removal, primary ozonation and secondary catalytic ozonation, for pretreating high-oil-content and severely-polluted sewage generated in a thickened oil refining process. In the steps of the homogeneous sedimentation, the emulsion breaking oil removal and sulphur removal, and the coagulating sedimentation sulphur removal, a thickened oil resource is recovered to the greatest extent mainly by physical and chemical means, and pollutants such as mud residues and SS (suspended solids) in non-dissolved states are removed; then a water sample is further subjected to the primary ozonation and the secondary catalytic ozonation; the acute catalytic ozonation of water is reduced; and the biodegradability is improved. The pretreated sewage meets a water inlet requirement of a biochemical treatment technology in a general oil refining sewage plant; and multiple functions such as recovering the oil resource, and eliminating foul gas pollution can be achieved in the process of pretreating the thickened oil refining sewage.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a technology for pretreatment of low-quality heavy oil refinery sewage, in particular to a method and device for pretreatment of heavy oil refinery sewage, belonging to the technical field of oil refinery sewage treatment. Background technique

[0002] Heavy oil usually refers to a viscosity greater than 1×10 2 MPa·s or relative density greater than 0.934g / cm 3 heavy bituminous crude oil with a viscosity greater than 5×10 4 The heavy oil of MPa s is called super heavy oil. In addition to the common characteristics of heavy oil such as low API, high viscosity, high density, high carbon residue, and rich non-hydrocarbon compounds, heavy oil also has high sulfur nitrogen, high salt content, high metal, high acid value, and high impurities. Features.

[0003] With the accelerated development of the world economy, conventional oil reserves are decreasing day by day, and the world's crude oil supply tends to be heavy and inferior...

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