Fluidized bed electrolytic catalyst and preparation method thereof

A catalyst and fluidized bed technology, applied in the field of catalyst preparation, can solve the problems of high operating cost and high energy consumption, and achieve the effects of wide applicability, high treatment efficiency and residual land.

Active Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, during the operation of the catalyst, the electrode voltage to be applied is 10~36V, which results in high energy consumption and high operating costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the flask equipped with stirring, drop 100ml of chloroform, 20g of macroporous polystyrene resin particles, and the specific surface area of ​​macroporous polystyrene resin is 500m 2 / g ~550m 2 / g, pore volume 0.8m 3 / g ~1.7m 3 / g, pore size 3.6 nm ~4.7nm; under stirring at room temperature, slowly add 25ml of 30% oleum; under the action of ultrasonic waves with a frequency of 15 kHz, sulfonation reaction at 40°C for 60 min; sulfonation is completed After that, slowly add absolute ethanol to wash 3 times, filter with suction; then wash with deionized water until there is no SO in the washing liquid 4 2- , dried for later use, to prepare a pre-sulfonated carrier;

[0026] Prepare the mixed salt solution of Zn, Ni, Mn, Zn in the solution 2+ The mass fraction of Ni is 7.2%. 2+ The mass fraction is 7.2%, Mn 2+ The massfraction of citric acid is 7.2%, then add citric acid, the massfraction of citric acid is 0.12%;

[0027] After the mixed salt solution is prepared...

Embodiment 2

[0030] In the flask equipped with stirring, drop 200ml of chloroform, 38g of macroporous polystyrene resin particles, and the specific surface area of ​​macroporous polystyrene resin is 400 m 2 / g ~520m 2 / g, pore volume 0.4 m 3 / g ~1.4m 3 / g, pore size 3.0 nm ~4.2nm; at room temperature, under stirring, slowly add 40% oleum 52ml; then under the action of ultrasonic waves at a frequency of 16kHZ, sulfonation reaction at 42°C for 75 min; sulfonation After the end, slowly add absolute ethanol to wash 3 times, and filter with suction; then wash with deionized water until there is no SO in the washing liquid 4 2- , dried for later use, to obtain a pre-sulfonated carrier;

[0031] Prepare the mixed salt solution of Zn, Ni, Mn, Zn in the solution 2+ The mass fraction is 6.5%, Ni 2+ The mass fraction is 8%, Mn 2+ The massfraction of citric acid is 6.5%, then add citric acid, the massfraction of citric acid is 0.45%;

[0032] After the solution is prepared, raise the temperatu...

Embodiment 3

[0035] In the flask that is equipped with stirring, drop into chloroform 300ml, macroporous polystyrene resin particle 66g, the specific surface area of ​​macroporous polystyrene resin is 460 m 2 / g ~600m 2 / g, pore volume 1.1m 3 / g ~2.0m 3 / g, pore size 3.8nm ~5.0nm; at room temperature, under stirring, slowly add 81ml of 50% oleum; then, under the action of ultrasonic waves with a frequency of 15kHZ, sulfonation reaction at 43°C for 85min; after sulfonation , slowly add absolute ethanol to wash 3 times, and filter with suction; then wash with deionized water until there is no SO in the washing liquid 4 2- , dried for later use, to obtain a pre-sulfonated carrier;

[0036] Prepare the mixed salt solution of Zn, Ni, Mn, Zn in the solution 2+ The mass fraction is 8%, Ni 2+ The mass fraction is 6.5%, Mn 2+ The massfraction of citric acid is 8%, then add citric acid, the massfraction of citric acid is 0.13%;

[0037] After the solution is prepared, raise the temperature t...

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Abstract

The invention discloses a fluidized bed electrolytic catalyst and a preparation method thereof and belongs to the field of catalyst preparation. The catalyst is characterized by comprising the following components in percentage by mass: 0.75-0.9% of Zn, 0.75-0.9% of Ni, 0.75-0.9% of Mn and the balance of a carrier, wherein the carrier is a macropore polystyrene resin. The preparation method comprises the following steps: utilizing a mixed solution containing metal ions Zn<2+>, Ni<2+> and Mn<2+>; reacting at a reaction temperature of 30-55 DEG C by utilizing the action of ultrasonic waves withthe frequency of 10-14kHZ, wherein the reaction time is 120-240 minutes. The catalyst can be directly used after the preparation is ended, and a catalyst precursor does not need to be mixed during use. Moreover, the catalyst can be recycled at a time and does not need to be screened in the recycling process, and the problem that the traditional catalysts cannot be respectively screened after mixing due to a small catalyst particle size so as to cause regeneration difficulty after use in a period of time can be solved.

Description

technical field [0001] A fluidized bed electrolysis catalyst and a preparation method thereof belong to the field of catalyst preparation. Background technique [0002] Difficult biochemical wastewater has many types and low COD, so it is difficult to rely on biological methods to treat it, which has a negative impact on the discharge and reuse of corporate wastewater. At present, advanced oxidation processes are commonly used at home and abroad to treat difficult-to-biochemical wastewater, but some advanced oxidation processes commonly used at present, such as Fenton reagent oxidation, ozone oxidation, wet oxidation, etc., have disadvantages such as high treatment costs or secondary pollution. Electrolytic catalytic oxidation is a promising method gradually developed in recent years. It has the advantages of strong oxidation ability, mild reaction conditions, simple operation and wide application range, and has gradually become a research hotspot in the field of sewage trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/10B01J31/22C02F1/461C02F1/72
CPCB01J31/10B01J31/226B01J35/0033B01J37/343C02F1/461C02F1/725
Inventor 李波邹宗海潘咸峰刘婷婷黄斌袁辉志解洪梅王秀丽
Owner CHINA PETROLEUM & CHEM CORP
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