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Method for preparing loaded catalyst for heterogeneous phase ozone oxidizing

A supported catalyst, ozone oxidation technology, applied in the direction of heterogeneous catalyst chemical elements, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve unused problems and achieve the use Effects of long life, reduced molding cost, and reduced operating cost

Inactive Publication Date: 2016-07-20
BEIJING JINDAYU ENVIRONMENT TECH CO LTD
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Problems solved by technology

[0004] The carriers of heterogeneous catalysts currently studied usually include alumina, activated carbon, ceramics, etc., but based on waste alumina desiccant, it can maintain the spherical shape of the waste and save molding costs. After modification and regeneration, it has not been used as a carrier in the field of ozone catalytic oxidation. use

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  • Method for preparing loaded catalyst for heterogeneous phase ozone oxidizing
  • Method for preparing loaded catalyst for heterogeneous phase ozone oxidizing

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Embodiment Construction

[0044] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] A preparation method for a supported catalyst for heterogeneous ozone oxidation, comprising the following features:

[0046]Step (1), washing with water: washing the discarded alumina desiccant in water until the pH of the solution remains unchanged;

[0047] Step (2), drying: separate the alumina desiccant after cleaning in step (1) from water, let it dry naturally at room temperature for 2-4 hours, and then dry it at 100°C-110°C for 3-5 hours, Obtain clean alumina desiccant;

[0048] Step (3), pickling and / or alkali washing, then take out the clean alumina des...

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Abstract

The invention discloses a method for preparing a loaded catalyst for heterogeneous phase ozone oxidizing. The method is characterized by including the following steps of 1, washing; 2, drying; 3, pickling and / or alkaline cleaning; 4, roasting; 5, active ingredient loading; 6, drying and roasting. A waste aluminum oxide drying agent used in the method is wide in source and low in cost, and is used as a carrier, secondary pollution caused by solid waste is avoided, and resource use of waste can be further achieved; as the waste aluminum oxide drying agent is kept spherical, forming cost is greatly reduced, and the use cost of the catalyst is radically reduced; the service life of the catalyst is long; when reacting is conducted for a period of time and the treatment efficiency is reduced, the catalyst can be recycled again, and operating cost can be further reduced.

Description

technical field [0001] The invention relates to the field of waste water treatment and catalysts, and aims to prepare a low-cost and environment-friendly ozone catalyst by using waste alumina desiccant as a carrier. The catalyst is mainly used for removing refractory organic matter in industrial waste water. Background technique [0002] Activated alumina desiccant is a kind of microporous and highly dispersed solid material. Its large specific surface area makes it have good adsorption performance. In addition, it also has a wide range of pressure resistance, wear resistance and heat resistance. Therefore, alumina desiccants in industrial production are widely used in instrument drying in petrochemical, chemical, textile, metallurgical and other industries, and can also be used in liquid phase and gas phase deep drying in steel, petroleum cracking gas, ethylene, and propylene. However, as the use time prolongs, the pores of these aluminas will be gradually blocked by impuri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/889B01J21/04
CPCB01J21/04B01J23/002B01J23/34B01J23/8892B01J2523/00B01J2523/842B01J2523/72B01J2523/31B01J2523/17B01J2523/44B01J2523/3712
Inventor 尹胜奎曹普晅赵毓璋曹文彬曹海燕耿天甲赵童曹嵩吴冠龙
Owner BEIJING JINDAYU ENVIRONMENT TECH CO LTD
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