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Preparation method of zinc ferrite desulfurization porous ceramic

A technology of porous ceramics and zinc ferrite, applied in ceramic products, chemical instruments and methods, iron compounds, etc., can solve the problems of secondary pollution and low desulfurization efficiency, achieve high service temperature, large sulfur capacity, and avoid secondary pollution. The effect of pollution

Inactive Publication Date: 2009-10-14
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has low desulfurization efficiency and produces secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Preparation of zinc ferrite:

[0016] Will (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 dissolved in distilled water to form a solution, (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 The molar ratio is 1:1, (NH 4 ) 2 CO 4 ·H 2 O is dissolved in distilled water alone to form a solution, and then the two solutions are heated to 75°C and mixed, wherein (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 with (NH 4 ) 2 CO 4 ·H 2 The molar ratio of O is 1:1.1, stirring at 95 ° C, a yellow precipitate is generated; after cooling, the yellow precipitate is filtered and cleaned until the SO in the cleaning solution 4 2- and NH 4 + The concentration is less than 100ppm; then transfer the cleaned yellow precipitate to an oven at 100°C for drying, soak it in ammonia water after drying, thoroughly stir and wash, and filter to remove the zinc oxide impurities, until it is cleaned NH in liquid 4 + Till it is less than 100ppm; then dry the washed yellow ...

Embodiment 2

[0024] 1. Zinc ferrite preparation:

[0025] Will (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 dissolved in distilled water to form a solution, (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 The molar ratio is 1:1, (NH 4 ) 2 CO 4 ·H 2 O is dissolved in distilled water alone to form a solution, and then the two solutions are heated to 75°C and mixed, wherein (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 with (NH 4 ) 2 CO 4 ·H 2 The molar ratio of O is 1:1.1, stirring at 95 ° C, a yellow precipitate is generated; after cooling, the yellow precipitate is filtered and cleaned until the SO in the cleaning solution 4 2- and NH 4 + The concentration is less than 100ppm; then transfer the cleaned yellow precipitate to an oven at 100°C for drying, soak it in ammonia water after drying, thoroughly stir and wash, filter, and remove the zinc oxide impurities in it until the cleaning solution Middle NH 4 +Till it is less than 100ppm; then dry the washed yel...

Embodiment 3

[0033] 1. Preparation of zinc ferrite:

[0034] Will (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 dissolved in distilled water to form a solution, (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 The molar ratio is 1:1, (NH 4 ) 2 CO 4 ·H 2 O is dissolved in distilled water alone to form a solution, and then the two solutions are heated to 75°C and mixed, wherein (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O and Zn(SO 4 ) 2 with (NH 4 ) 2 CO 4 ·H 2 The molar ratio of O is 1:1.1, stirring at 95 ° C, a yellow precipitate is generated; after cooling, the yellow precipitate is filtered and cleaned until the SO in the cleaning solution 4 2- and NH 4 + The concentration is less than 100ppm; then transfer the cleaned yellow precipitate to an oven at 100°C for drying, soak it in ammonia water after drying, thoroughly stir and wash, filter, and remove the zinc oxide impurities in it until the cleaning solution Middle NH 4 + Till it is less than 100ppm; then dry the washed...

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Abstract

The invention provides a preparation method of a zinc ferrite desulfurization porous ceramic. The method comprises the following steps of preparation, molding and burning of power body and is characterized in that zinc ferrite power is prepared by a solid-phase reaction method, the zinc ferrite power is mixed with a pore agent according to a certain proportion to form zinc ferrite ceramic power, the zinc ferrite ceramic power is prepared into a zinc ferrite ceramic pellet with a certain aperture and air porosity or zinc ferrite ceramic particle billet, the zinc ferrite ceramic pellet or the zinc ferrite ceramic particle billet is burned at a certain temperature to form a zinc ferrite ceramic pellet or a zinc ferrite ceramic particle, and the zinc ferrite ceramic pellet or the zinc ferrite ceramic particle is taken as the raw material to be prepared into the zinc ferrite desulfurization porous ceramic. The invention adopts the zinc ferrite to prepare the porous ceramic with desulfurization, and since the zinc ferrite ceramic pellet or the zinc ferrite ceramic particle and the zinc ferrite desulfurization porous ceramic respectively have higher apparent porosity, the invention has the advantages of high desulfurization efficiency, high sulfur capacity, high temperature resistance, easy regeneration and reutilization.

Description

technical field [0001] The invention relates to a preparation method of zinc ferrite desulfurization porous ceramics, belonging to the technical field of porous ceramics preparation. Background technique [0002] Sulfur compounds in waste (gas, liquid and solid) have caused great pollution to the environment and are one of the focuses of people's attention. At present, there are many ways to control sulfide pollution, such as: (1) through the structural design of the desulfurization device; (2) through liquid absorption; (3) through sulfur fixation, that is, to make the solid desulfurizer react with the sulfide displacement. The above method has low desulfurization efficiency and produces secondary pollution. Contents of the invention [0003] The object of the present invention is to provide a kind of preparation method of zinc ferrite desulfurization porous ceramics that can overcome the above-mentioned defects, adapt to a wide range of working temperature and have exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622C04B38/06C01G49/00
Inventor 唐竹兴田贵山
Owner SHANDONG UNIV OF TECH
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