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

A technology for heavy crude oil and processing wastewater, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Problems such as poor catalytic performance, to achieve the effects of stable physical and chemical properties, long service life and high catalytic activity

Active Publication Date: 2018-07-13
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

[0056] 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:

[0057] (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;

[0058] (2) Carrying out the first drying and the first calcining in sequence on the carrier containing the auxiliary agent, wherein the first drying temperature is 110°C, the first drying time is 20min, the first calcining temperature is 550°C, and the first drying temperature is 550°C. One roasting time is 50min;

[0059] (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, w...

preparation example 2

[0061] 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:

[0062] 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 packing method of a catalyst for processing high-acid heavy crude oil processing wastewater. The method comprises the following step: along the material flow direction, a catalytic reactor is successively filled with an assistant catalyst A, an ozone catalytic oxidation catalyst and an assistant catalyst B, wherein 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. By the packing method of the catalyst capable of maintain stable physical and chemical performance for a long time and for processing high-acid heavy crude oil processing wastewater, COD cr value of wastewater can be remarkably reduced. In addition, by the above packing method, the ozone catalytic oxidation catalyst used has long service life and high catalytic activity.

Description

technical field [0001] The invention relates to a catalyst loading 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 i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/78B01J23/889
Inventor 肖立光郭宗斌王栋钟震徐辉军李燕妹徐鹏宇李海华
Owner CHINA NAT OFFSHORE OIL CORP
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