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Preparation method of diatomite-based supporter for efficient oxidation high-density catalytic oxidation tower

A catalytic oxidation tower, diatomite technology, applied in the direction of catalyst carrier, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problem of small amount of sludge generation, high operating cost, divalent Problems such as large amount of iron salt catalyst dosing, to achieve the effect of reducing the amount of dosing, improving the treatment effect, and reducing the amount of sludge generated

Inactive Publication Date: 2020-12-15
东阳市前途工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the main application is Fenton oxidation technology, but the traditional Fenton method itself has some defects, the dosage of ferrous iron salt catalyst is large, the operation cost is high, and the amount of sludge generated is small

Method used

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  • Preparation method of diatomite-based supporter for efficient oxidation high-density catalytic oxidation tower
  • Preparation method of diatomite-based supporter for efficient oxidation high-density catalytic oxidation tower
  • Preparation method of diatomite-based supporter for efficient oxidation high-density catalytic oxidation tower

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Embodiment 1

[0027] A method for preparing a diatomite-based support for efficient oxidation and high-density catalytic oxidation towers, comprising a support and a fluidized bed reaction tank, characterized in that the support is an alkalized modified diatomite-based support.

[0028] The specific preparation scheme of the alkalized modified diatomite-based carrier is as follows:

[0029] Step 1: Put 100kg of modified diatomite, 10kg of alumina, 12kg of sodium silicate, 0.3kg of ammonium oxalate, and 2kg of calcium carbonate into the mixing kettle, mix and stir for 20min, and then put 40kg of mass kg Add 20% silica sol into the mixing kettle, stir and mix evenly, and then form it, and then dry it at 80°C for 1 hour to obtain the carrier embryo body. After completion, put the carrier embryo body into the muffle furnace, and control the temperature at 600 ℃, calcined for 60 minutes, cooled to room temperature after completion, and crushed into granules after taking out;

[0030] Step 2: Ad...

Embodiment 2

[0039] A method for preparing a diatomite-based support for efficient oxidation and high-density catalytic oxidation towers, comprising a support and a fluidized bed reaction tank, characterized in that the support is an alkalized modified diatomite-based support.

[0040] The specific preparation scheme of the alkalized modified diatomite-based carrier is as follows:

[0041] Step 1: Put 150kg of modified diatomite, 22kg of alumina, 15kg of sodium silicate, 0.4kg of ammonium oxalate, and 3kg of calcium carbonate into the mixing kettle, mix and stir for 25min, and then put 48kg of mass kg Add 25% silica sol into the mixing kettle, stir and mix evenly, and then form it, and then dry it at 100°C for 3 hours to obtain the carrier embryo body. After completion, put the carrier embryo body into the muffle furnace, and control the temperature at 700 ℃, calcined for 90 minutes, cooled to room temperature after completion, and crushed into granules after taking out;

[0042] Step 2: ...

Embodiment 3

[0051] A method for preparing a diatomite-based support for efficient oxidation and high-density catalytic oxidation towers, comprising a support and a fluidized bed reaction tank, characterized in that the support is an alkalized modified diatomite-based support.

[0052] The specific preparation scheme of the alkalized modified diatomite-based carrier is as follows:

[0053] Step 1: Put 180kg of modified diatomite, 28kg of alumina, 18kg of sodium silicate, 0.6kg of ammonium oxalate, and 6kg of calcium carbonate into the mixing kettle, mix and stir for 30min, and then put 60kg of mass kg Add 30% silica sol into the mixing kettle, stir and mix evenly, and then form it, and then dry it at 120°C for 4 hours to obtain the carrier embryo body. After completion, put the carrier embryo body into the muffle furnace, and control the temperature at 800 ℃, calcined for 120min, cooled to room temperature after completion, and crushed into granules after taking out;

[0054] Step 2: Add ...

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Abstract

The invention relates to the field of environmental protection, in particular to a preparation method of a diatomite-based supporter for an efficient oxidation high-density catalytic oxidation tower.The diatomite-based supporter comprises a supporter and a fluidized bed reaction tank, and the supporter is an alkalized modified diatomite-based supporter. The preparation method of the modified diatomite comprises the following steps: adding 100-150 parts of the obtained supporter material into a high-speed mixer, vacuumizing, controlling the vacuum degree to be 0.085-0.098 MPa, adding 1000-1500parts of hydrochloric acid with the mass percent concentration of 10% to 15%, controlling the temperature to be 60-80 DEG C, treating for 30-60 minutes, adding 20-28 parts of phytic acid and 3-8 parts of titanium dioxide, controlling the temperature to be 60-80 DEG C, stirring and reacting for 2-5 hours, filtering and drying to obtain the modified diatomite loaded with the titanium dioxide and provided with the phytate group.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a preparation method of a diatomite-based carrier for a high-density catalytic oxidation tower with high-efficiency oxidation. Background technique [0002] Diatomite-type support: It is calcined from natural diatomite, and it is pink because it contains a small amount of iron oxide, so it is called red support, such as 201 type, 6201 type, C 22 insulation brick, Chromsorb P, etc.; if in Add a small amount of sodium carbonate as a co-solvent before calcination, and after calcination, iron oxide will produce colorless sodium iron silicate, which is called white support, such as 101 type, 102 type, Celite 545, Chromosorb (AGW), Gas Chrom (APQSZ) Wait. [0003] The most notable feature of high-efficiency oxidation is that in a certain way, hydroxyl radical (HO) intermediates are generated in the oxidation system, and (HO) is used as the main oxidant to react with organic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J32/00B01J31/02B01J21/16C02F1/72C02F1/78C02F101/30
CPCB01J21/16B01J23/745B01J31/0295C02F1/722C02F1/725C02F1/78C02F2101/30C02F2305/023C02F2305/026
Inventor 蔡兰花
Owner 东阳市前途工业设计有限公司
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