Ozone catalytic oxidation pretreatment device and method for oil refinery sewage

A technology of ozone catalytic oxidation and pretreatment device, applied in water/sewage treatment, oxidized water/sewage treatment, water/sewage treatment equipment, etc., can solve the problem of low ozone utilization rate, achieve easy control and improve ozone utilization rate , the effect of reducing pollutant load

Active Publication Date: 2017-01-11
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of low ozone utilization rate in the prior art, the embodiment of the present invention provides a pretreatment device and method for ozone catalytic oxidation of oil refinery sewage

Method used

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  • Ozone catalytic oxidation pretreatment device and method for oil refinery sewage
  • Ozone catalytic oxidation pretreatment device and method for oil refinery sewage

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Embodiment 1

[0046] as attached figure 1 As shown, the embodiment of the present invention provides an ozone catalytic oxidation pretreatment device for oil refining sewage, including an ozone generation system 1, an ozone catalytic oxidation tower 4, an ozone tail gas reuse system 2, and an ozone preoxidation tower 3 arranged in sequence.

[0047]The ozone catalytic oxidation pretreatment device for oil refining sewage provided by the embodiment of the present invention adopts the ozone generation system 1, the ozone catalytic oxidation tower 4, the ozone tail gas reuse system 2 and the ozone preoxidation tower 3 which are connected in sequence, and adopts the ozone tail gas preoxidation- The high-concentration ozone catalytic oxidation process first uses the ozone tail gas to remove the undissolved pollutants in the sewage in the ozone pre-oxidation tower 3, and degrades small molecular organic pollutants to initially reduce the pollutant load, and then in the ozone catalytic oxidation to...

Embodiment 2

[0059] as attached figure 2 As shown, the embodiment of the present invention provides an ozone catalytic oxidation pretreatment method, comprising the following steps:

[0060] The oil refining sewage is pumped into the ozone pre-oxidation tower and the ozone catalytic oxidation tower in sequence, and at the same time, the ozone generation system is used to provide high concentration and excess ozone to the ozone catalytic oxidation tower, and in the ozone catalytic oxidation tower, the excess ozone is used. The synergistic effect of ozone and solid-phase catalyst degrades the high-concentration macromolecular organic pollutants in the oil refining sewage;

[0061] The oil refining sewage discharged from the ozone catalytic oxidation tower is discharged to the sewage treatment plant for up-to-standard treatment;

[0062] The ozone tail gas in the ozone catalytic oxidation tower is recovered by the ozone tail gas recycling system and supplied to the ozone pre-oxidation tower...

Embodiment 3

[0071] An embodiment of the present invention provides a solid-phase catalyst: comprising a carrier γ-Al 2 O 3 And composite active components Ni, Co, Mn oxides;

[0072] Wherein, the loading amount of the composite active components Ni, Co and Mn oxides is the carrier γ-Al 2 O 3 10w%-25w% of the mass.

[0073] The molar ratio of Ni, Co, and Mn in the composite active components Ni, Co, and Mn oxides is 1:1:0.2;

[0074] The solid-phase catalyst has an average particle size of 3mm-4mm, crushing strength of 150N / cm-260N / cm, a pore size distribution range of 10nm-100nm, and a specific surface area of ​​150m 2 / g-220m 2 / g, the pore volume is 0.6ml / g-1.5ml / g.

[0075] The solid-phase catalyst with the above physical parameters improves the activity of the catalyst on the one hand, and on the other hand, avoids the reduction of the reaction rate and the blockage of the pipeline caused by the loss of the catalyst due to the loss of materials.

[0076] The solid phase catalys...

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Abstract

The invention discloses an oil refining waste water catalytic ozonation pre-treatment apparatus and an oil refining waste water catalytic ozonation pre-treatment method and belongs to the technical field of oil refining waste water treatment. The apparatus includes, in a successively communicating manner, an ozone generating system, a catalytic ozonation column, an ozone tail gas reuse system and an ozone pre-oxidization column. The method includes following steps: (1) removing non-dissolved pollutants and degrading small-molecular organic pollutants by means of pre-oxidization of the oil refining waste water through ozone tail gas in the ozone pre-oxidization column; (2) catalytically oxidizing the oil refining waste water through high-concentration ozone in the catalytic ozonation column for degrading high-concentration large-molecular organic pollutants; and (3) recycling the tail gas from the catalytic ozonation column and providing the tail gas to the ozone pre-oxidization column by the ozone tail gas reuse system. By means of recycling of the ozone tail gas, the apparatus and the method can increase utilization rate of the ozone, can reduce cost of waste water treatment, can reduce pollutant load in the waste water and can improve biodegradability of discharged water. The method and the apparatus are simple in operation and easy to control.

Description

technical field [0001] The invention relates to the technical field of oil refining sewage treatment, in particular to an ozone catalytic oxidation pretreatment device and method for oil refining sewage. Background technique [0002] Crude oil will produce a large amount of oil refining sewage during storage and electrical desalination, which not only contains insoluble pollutants (such as oil slick, emulsified oil and suspended solids), but also contains high concentrations of dissolved pollutants: easy to degrade Small-molecule organic pollutants and refractory macromolecular organic pollutants are mainly composed of highly polar heterocyclic compounds with complex structures. Due to the high pollutant load and poor biodegradability in oil refining sewage, it is very difficult to degrade it by microorganisms. Generally, it needs to be pretreated before it can be discharged to the sewage field for up-to-standard treatment. [0003] Ozone catalytic oxidation technology dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/78
CPCC02F1/78C02F2101/32C02F2103/365C02F2201/782
Inventor 陈春茂蔡玉颖邹茂荣高磊张铁刚栾新晓陈红硕孙瑞
Owner BC P INC CHINA NAT PETROLEUM CORP
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