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A kind of production method of iron-based desulfurizer with high sulfur capacity

A manufacturing method, iron-based desulfurization technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of inability to realize large-scale industrial production, consume a lot of time, and low production efficiency, and achieve large-scale industrial production , saving time and high production efficiency

Active Publication Date: 2012-02-15
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is that the high-sulfur capacity iron-based desulfurizers in the prior art need a lot of time to complete the reaction due to the mixing and kneading of large quantities of reactants, and it takes a lot of time to complete the natural drying of a large amount of kneaded materials after kneading. The production efficiency is very low, leading to the problem that industrialized large-scale production cannot be realized; and a manufacturing method that can realize the large-scale and efficient industrialized production of the above-mentioned high-sulfur capacity iron-based desulfurizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take by weighing 35kg ferrous sulfate heptahydrate and 14kg sodium carbonate and place in the mixing reactor, and add 7L water, open and stir and the above-mentioned materials are fully mixed and reacted, the time of mixed reaction is 30min, and its temperature is maintained in the mixed reaction process. 35°C, so as to obtain 56kg of ferrous carbonate and sodium sulfate containing crystal water; send the product after the above mixed reaction into a washing tank with 168kg of dissolved oxygen washing water, and wash the above product for 2 hours Send the above-mentioned slurry obtained after washing into the buffer tank, carry out static separation, make the solid settle, and then carry out centrifugation on the above-mentioned refined slurry, and finally place the separated solid in the air to dry 20kg of high-sulfur-capacity iron-based desulfurizer can be obtained.

Embodiment 2

[0018] Weigh 35kg of ferrous sulfate heptahydrate and 14kg of sodium carbonate into a mixing reactor, add 10.5L of water, start stirring to fully mix and react the above materials, the mixing reaction time is 50min, and keep its temperature during the mixing reaction Be 50 ℃, thereby obtain ferrous carbonate and sodium sulfate 59.5kg containing water of crystallization; The product after the above-mentioned mixed reaction is sent into the washing tank that is added with the washing water of 30 ℃ with the temperature of 238kg dissolved oxygen, to the above-mentioned product Carry out washing, and the washing time is 3 hours; send the above-mentioned slurry obtained after washing into the buffer tank, carry out static separation, and allow the solid to settle, and then perform centrifugation on the above-mentioned refined slurry, and finally separate the separated Dry the solid at 70°C for 5 hours to obtain 25kg of high-sulfur iron-based desulfurizer.

Embodiment 3

[0020]Take by weighing 25kg ferrous sulfate heptahydrate and 10.5kg sodium carbonate and place in twin-screw mixing reactor, and add 6L water, start stirring and fully mix and react the above-mentioned materials, the time of mixing reaction is 100min, keep Its temperature is 35 ℃, thereby obtains ferrous carbonate and sodium sulfate 41.5kg containing water of crystallization; The product after the above-mentioned mixed reaction is sent into the washing tank that is added with the temperature of 166kg dissolved oxygen and is the washing water of 35 ℃, to The above product is washed, and the washing time is 4 hours; the above-mentioned slurry obtained after washing is sent to a buffer tank, and the static separation is carried out to allow the solid to settle, and then the above-mentioned static slurry is centrifuged.

[0021] Add 24.9 kg of the material obtained after the first centrifugation above to a washing tank with 99.6 kg of dissolved oxygen at a temperature of 35° C. to ...

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Abstract

The invention relates to a production method of a high-sulfur capacity iron-based desulfurizer. The iron-based desulfurizer is composed of cubic crystal phase Fe3O4, amorphous Fe2O3 and amorphous Fe2O3·H2O, which comprises the following steps: (a) The solid soluble ferrous salt and soluble carbonate are placed in the mixing reactor, and an appropriate amount of water is added, and then the stirring is started, and the above-mentioned reaction materials are further mixed and reacted during the stirring process; (b) the obtained in step (a) The product is sent to a water washing tank, and the above product is washed with water dissolved in oxygen; (c) the slurry obtained after washing is sent to a buffer tank, and then centrifuged; (d) the separated solid Leave to air dry or tumble dry. The process can realize the mass industrial production of the above-mentioned high-sulfur-capacity iron-based desulfurizer with high efficiency.

Description

technical field [0001] The invention relates to a method for manufacturing a high-sulfur-capacity iron-based desulfurizer, which is particularly suitable for large-scale industrial production and belongs to the technical field of desulfurizers. Background technique [0002] Chinese patent CN101134918A discloses a desulfurizer active component with high sulfur capacity that can be used to remove hydrogen sulfide from gaseous or liquid materials. The desulfurizer active component includes cubic crystal phase Fe 3 o 4 , Amorphous Fe 2 o 3 , Amorphous Fe 2 o 3 ·H 2 O. The desulfurizer creatively selects the crystal phase of the commonly used iron oxide desulfurizer, cleverly utilizes the synergistic effect of the above-mentioned iron oxides of different crystal phases, and realizes the high sulfur capacity of the desulfurizer. The preparation method of the desulfurizing agent comprises the following steps: (1) mixing the solid soluble ferrous salt and the solid hydroxide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30
Inventor 刘存芳赵刚
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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