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A kind of heterogeneous ozone catalyst and preparation method thereof

A catalyst and heterogeneous technology, applied in the field of heterogeneous ozone catalyst and its preparation, can solve the problems of single catalytic active component, low ozone utilization rate, unfavorable energy saving and emission reduction, etc., achieve low production cost and improve utilization rate , the effect of wide applicability

Active Publication Date: 2016-05-18
易志坚 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned production process inevitably requires the use of secondary heating (re-sintering after drying), which not only consumes a lot of energy, but also produces secondary pollution to varying degrees from fuel combustion and active component conversion, which is not conducive to energy saving and emission reduction
In addition, the catalytically active components of the catalysts prepared by the above method are relatively single, which is not widely applicable in wastewater treatment, and the production process is long and the process is relatively complicated, which increases the cost of product production. At present, the catalyst components are single, Its utilization rate of ozone is low
[0008] This shows that in the prior art, ozone catalyst and its preparation method all have obvious deficiencies and defects, and need to be improved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Heterogeneous solid ozone catalyst refers to a kind of magnesium cement particles saturated with multiple metal oxides on the surface and micropores. The preparation method of the heterogeneous ozone catalyst specifically includes the following steps:

[0044] Step 1: Screen the water slag powder after magnetic separation, and crush it to a particle size of less than 250 meshes, select a catalytically active mixture powder containing metal oxides with a particle size of less than 380 mesh, select magnesium oxide, magnesium chloride hexahydrate powder and dry powder Foaming agent

[0045] Step 2: Add the water slag micropowder, magnesium oxide powder, magnesium chloride hexahydrate powder, dry powder foaming agent and catalytically active mixture powder with a particle size of less than 380 mesh in a certain proportion to the batching mixing tank, and uniformly mix with a mixer to form a mixture;

[0046] Among them, water slag powder accounts for 36.4%-52.4% of the total mass...

Embodiment 2

[0054] The preparation method of the heterogeneous ozone catalyst of the present invention specifically includes the following steps:

[0055] Step 1: Screen the water slag powder after magnetic separation, and crush it into fine powder with a particle size of less than 250 meshes, select a catalytically active mixture powder containing metal oxides with a particle size of less than 380 mesh, select magnesium oxide, magnesium chloride hexahydrate powder and dry powder Foaming agent

[0056] Step 2: Add the water slag micropowder, magnesium oxide powder, magnesium chloride hexahydrate powder, dry powder foaming agent and catalytically active mixture powder with a particle size of less than 380 mesh in a certain proportion to the batching mixing tank, and uniformly mix with a mixer to form a mixture;

[0057] Among them, water slag powder accounts for 36.4%-52.4% of the total mass, magnesium oxide (MgO) accounts for 9.1%-14.3% of the total mass, magnesium chloride hexahydrate (MgCl 2 ·...

Embodiment 3

[0066] Firstly, the magnetically separated water slag powder is screened and pulverized into fine powder with a particle size of less than 250 meshes, and then a catalytically active mixture powder containing metals and metal oxides, magnesium oxide, magnesium chloride hexahydrate powder, and carbonic acid with a particle size of less than 380 mesh is selected Hydrogen ammonia dry powder foaming agent, according to the mass ratio of water slag powder 47.2%, magnesium oxide (MgO) 12.3%, magnesium chloride hexahydrate (MgCl) 2 ·6H 2 O) 23.5%, catalytically active mixture 11.3% (wherein, the mass ratio of each component in the first catalytically active mixture is: 30% for ferric oxide, 5% for ferroferric oxide, and 0.0003% for gold (Au) , Silver (Ag) is 0.03%, the balance is calcium oxide (CaO) and silicon dioxide (SiO 2 ); In the second catalytically active mixture, copper oxide (CuO) accounts for 50%, manganese monoxide (MnO) accounts for 50%) and 5.7% dry powder foaming agent ar...

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Abstract

The invention discloses a non-homogeneous phase ozone catalyst and a preparation method thereof. The non-homogeneous phase ozone catalyst comprises the following components in percentage by weight: 36.4%-52.4% of water dreg micropowder, 9.1%-14.3% of magnesium oxide (MgO), 18.2%-23.8% of magnesium chloride hexahydrate (MgCl2.6H2O), 4.8%-9% of foaming agents and 9.1%-19% of catalytic activity mixtures. The preparation method of the non-homogeneous phase ozone catalyst, which is disclosed by the invention, is simple and short in process flow, only requires the maximum temperature at 40-60 DEG C in a product preparation process, and is very low in production cost.

Description

Technical field [0001] The invention relates to the technical field of catalysts, in particular to a heterogeneous ozone catalyst and a preparation method thereof. Background technique [0002] At present, as an excellent strong oxidant, ozone can oxidize various impurities in the water in water treatment to achieve the effect of water purification, and it has the advantages of no secondary pollution during the water purification process and is obtained in water treatment. widely used. [0003] The earliest use of ozone was mainly for disinfection and direct oxidation of pollutants in the water. In the latter use method, it was found that although ozone has strong oxidation performance, it has a strong ability to treat pollutants in water. Selectivity, this feature limits the promotion of ozone oxidation technology in the treatment of refractory organic wastewater. In view of this, some people formulate the catalyst into a solution with a certain concentration (ie, homogeneous ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C02F1/78
CPCY02W10/37
Inventor 易志坚王祥胡磊
Owner 易志坚
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