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A method for treating high-acid heavy crude oil processing wastewater

A technology for heavy crude oil and wastewater processing, applied in chemical instruments and methods, oxidized water/sewage treatment, chemical/physical processes, etc., can solve the problems of short catalyst life, poor catalytic performance, and poor catalytic efficiency, etc. Achieve the effect of stable physical and chemical properties and reduce CODcr value

Active Publication Date: 2018-09-07
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, there are various defects when the catalyst provided by the prior art is used in the ozone catalytic oxidation technology. For example, the publication number is a preparation method of an ozone catalytic oxidation catalyst for treating oil refinery wastewater disclosed in CN101982237A. A mixture of amorphous alumina and iron oxyhydroxide powder is used for granulation, curing, drying, and roasting to obtain a finished catalyst. The preparation method of the catalyst is simple and environmentally friendly. However, the use of the catalyst when using the catalyst to treat oil refinery wastewater Short service life and poor performance such as catalytic efficiency
When utilizing the catalyst involved in CN102923913A to treat oil refinery wastewater, there are also the defects of short service life and poor catalytic performance of the catalyst

Method used

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  • A method for treating high-acid heavy crude oil processing wastewater
  • A method for treating high-acid heavy crude oil processing wastewater
  • A method for treating high-acid heavy crude oil processing wastewater

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preparation example Construction

[0029] A preparation method of an ozone catalytic oxidation catalyst, the method comprising:

[0030] (1) Contacting the impregnation solution A containing the auxiliary elements with the carrier to obtain the carrier containing the auxiliary elements;

[0031] (2) The carrier containing the additive element is contacted with the impregnation solution B containing the active component element,

[0032] Wherein, the carrier includes γ-alumina, the active component elements include Fe, Mn, Cu and Co, and the additive elements include Ce and Mg.

[0033] In the present invention, in step (1) and / or step (2), there are multiple ways of contacting, preferably, the way of contacting is dipping. In the present invention, there may be various ways of impregnation, for example, in the present invention, an equal-volume impregnation method may be used for impregnation. In the present invention, the temperature and time of the impregnation are not particularly limited, those skilled in t...

preparation example 1

[0058] This preparation example is used to prepare the ozone catalytic oxidation catalyst of the present invention, and this preparation example adopts the following method to prepare the described catalyst:

[0059] (1) The impregnating solution A is contacted with 25kg of gamma-alumina carriers by an equal volume impregnation method to obtain a carrier containing additive elements;

[0060] (2) performing the first drying and the first calcination on the carrier containing the additive elements in sequence, wherein the temperature of the first drying is 110°C, the time of the first drying is 20min, and the temperature of the first calcination is 550°C, The time of the first roasting is 50min;

[0061] (3) Contact the carrier containing additive elements after the first calcination with the impregnation solution B by using an equal-volume impregnation method, and carry out the second drying and the second calcination sequentially on the catalyst obtained after the contact, wh...

preparation example 2

[0063] This preparation example is used to prepare the ozone catalytic oxidation catalyst of the present invention, and this preparation example adopts the following method to prepare the described catalyst:

[0064] The impregnating solution A and the impregnating solution B were contacted with 25kg of gamma-alumina carrier by the equal volume impregnation method, and the catalyst obtained after the contact was dried and calcined in sequence, wherein the drying temperature was 110°C, and the drying time was 30min. The calcination temperature was 550° C., and the calcination time was 80 minutes. After calcination, the catalyst cat2 was obtained. The physicochemical properties, active component elements and auxiliary element loadings of the catalyst cat2 are shown in Table 1.

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Abstract

The invention discloses a method for processing high-acid heavy crude oil processing wastewater. The method comprises the following step: high-acid heavy crude oil processing wastewater is contacted with a catalyst, wherein the catalyst contains an ozone catalytic oxidation catalyst. The ozone catalytic oxidation catalyst comprises a carrier and active components and auxiliaries which are loaded on the carrier. The carrier contains gamma-alumina. The active component elements contain Fe, Mn, Cu and Co. The auxiliary elements contain Ce and Mg. The method for processing high-acid heavy crude oil processing wastewater is low-priced, has simple process and is green and environmentally friendly. In addition, the catalyst used in the method has long service life, high catalytic activity and stable catalytic performance.

Description

technical field [0001] The invention relates to a method for treating high-acid heavy crude oil processing wastewater. Background technique [0002] Refining wastewater is a type of wastewater generated during petroleum refining and processing. Due to the variety of crude oil, the water quality components of oil refinery wastewater are complex and varied greatly, with poor biodegradability, COD, NH 3 -N concentration is high, the biochemical treatment process is vulnerable to impact, and the treatment effect is unstable. [0003] With the advancement of national energy conservation and emission reduction work, the state and local governments have successively issued more stringent emission standards and emission reduction targets. However, on the one hand, due to the continuous improvement of discharge standards, the requirements for the removal rate of pollutants continue to increase. On the other hand, the pressure on enterprises to reduce emissions is increasing. The ke...

Claims

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Application Information

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IPC IPC(8): C02F1/78B01J23/889
Inventor 郭宗斌吴青苗静肖立光王栋于海斌徐辉军徐鹏宇李海华
Owner CHINA NAT OFFSHORE OIL CORP
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