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Preparation method for normal-temperature iron series hydrogen sulfide removal agent

A hydrogen sulfide and removal agent technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve problems such as poor reproducibility of granular products

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method different from the previous preparation technology, a preparation method of iron-based hydrogen sulfide removal agent at room temperature, the preparation conditions of the method are highly controllable, easy to operate, and overcome the shortcomings of poor reproducibility of granular products. The conversion of metal salt is complete, and it still has high activity when it is used for the removal of hydrogen sulfide at high space velocity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a normal temperature loading type iron-based hydrogen sulfide removal agent may comprise the following steps to achieve:

[0019] (1) Alkali activated carrier clay

[0020] Use attapulgite as the carrier, make slurry with water, the solid-to-liquid ratio is 1:2, add NaOH to adjust the pH value of the solution to 12, soak and activate for 10 hours, separate the attapulgite by centrifugation, wash with distilled water and then centrifuge The product is produced, and the centrifuge is dried at 100°C for 2 hours to obtain alkali-activated attapulgite;

[0021] (2) Homogeneous precipitation loading iron and copper

[0022] Add the product obtained in step (1) into water at a solid-to-liquid ratio of 1:5, disperse into a slurry with strong ultrasonic waves, and then add iron salts and copper salts to the slurry to control the concentration of ferric chloride and copper chloride in the slurry to 0.5 M, the molar ratio of copper and iron is 1:4, add ur...

Embodiment 2

[0024] A preparation method of a normal temperature loading type iron-based hydrogen sulfide removal agent may comprise the following steps to achieve:

[0025] (1) Alkali activated carrier clay

[0026] Using clay as a carrier, make it into a slurry with water, the solid-to-liquid ratio is 1:5, add NaOH to adjust the pH value of the solution to 10, soak and activate for 24 hours, separate the clay by centrifugation, wash with distilled water and then centrifuge to separate the product, 100 Dry the centrifuge at ℃ for 2 hours to obtain alkali-activated clay;

[0027] (2) Homogeneous precipitation loading iron

[0028] Add the product obtained in step (1) into water at a solid-to-liquid ratio of 1:10, disperse into a slurry with strong ultrasonic waves, and then add iron salt and copper salt to the slurry so that the concentration of iron nitrate and copper nitrate in the slurry is controlled at 1M. The molar ratio of iron and iron is 1:9, add urea according to the molar rati...

Embodiment 3

[0030] A preparation method of a normal temperature loading type iron-based hydrogen sulfide removal agent may comprise the following steps to achieve:

[0031] (1) Alkali activated carrier clay

[0032] Use diatomaceous earth as a carrier, make it into a slurry with water, the solid-to-liquid ratio is 1:10, add NaOH to adjust the pH value of the solution to 12, soak and activate for 12 hours, centrifuge to separate montmorillonite, wash with distilled water and then centrifuge The product is produced, and the centrifuge is dried at 100°C for 2 hours to obtain alkali-activated montmorillonite;

[0033] (2) Homogeneous precipitation loading iron

[0034]Add the product obtained in step (1) into water at a solid-to-liquid ratio of 1:50, disperse into a slurry by strong ultrasonication, and then add ferric nitrate and copper sulfate to the slurry to control the concentration of ferric nitrate and copper sulfate in the slurry to 0.1M. The molar ratio of copper and iron element i...

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Abstract

The invention relates to a preparation method for a normal-temperature iron series hydrogen sulfide removal agent. The preparation method is characterized by including the steps of (1) alkaline activation of carrier clay and (2) homogeneous precipitation of load iron and copper. Compared with the prior art, the preparation method has the advantages that the method is high in controllability of preparation conditions and convenient to operate, the defect of poor reproducibility of grain products can be overcome, metal salt is converted completely, activity of the hydrogen sulfide removal agent is improved, and the hydrogen sulfide removal agent can be used for removal of hydrogen sulfide at the high air speed.

Description

technical field [0001] The invention relates to a desulfurizer, in particular to a preparation method of a normal-temperature iron-based hydrogen sulfide remover. Background technique [0002] All kinds of reactions involving sulfur compounds may generate hydrogen sulfide. Hydrogen sulfide in industry mainly exists in gas processing industries such as oil refineries, natural gas purification plants, and coal gas purification plants. Among them, hydrogen sulfide accounts for more than 90% of the sulfides. It is highly corrosive, which not only causes corrosion of equipment and pipelines, but also poisons catalysts and seriously endangers human health. At present, there are many kinds of methods for removing hydrogen sulfide, which can be divided into two categories: dry method and wet method according to the desulfurization method. The traditional wet desulfurization technology is relatively mature, can be carried out at low temperature or normal temperature, and has the cha...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30B01D53/81B01D53/52
Inventor 张智宏刘幸幸李蒙舟
Owner CHANGZHOU UNIV
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