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Normal-temperature desulfurizer and preparation method thereof

A desulfurizer and binder technology, applied in the field of desulfurizers containing malachite, can solve the problems of no desulfurization, no research on other properties, no research on performance, etc., and achieves high precision, increased production cost, simplified The effect of craftsmanship

Active Publication Date: 2014-05-28
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

This document records the preparation method of the above-mentioned catalyst precursor, but does not study the other properties of the components in the above-mentioned catalyst precursor and the mixture of the components combined, especially the other properties of the chemical mixture containing malachite No research was conducted, let alone its desulfurization content

Method used

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  • Normal-temperature desulfurizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 136.4 g of CuCl 2 2H 2 O and 27.2 g ZnCl 2, placed in a 2000ml stirred reactor, add 800ml of water, and stir at room temperature until the copper salt and zinc salt are completely dissolved. Then weigh 90 grams of solid ammonium carbonate and 13 grams of kaolin, slowly add to the above mixed solution, then use solid ammonium carbonate to adjust the pH of the solution to 7.5, and continue to stir for 10 minutes. Filter the precipitate, wash the precipitate with water until NH in the eluent 4 + The elution is stopped when the ion mass percentage concentration is less than 0.5%. The precipitate was dried to obtain a filter cake.

[0021] Weigh 95 grams of the above filter cake and 5 grams of binder, mix them with water, knead them, shape them on a small twin-screw extruder, extrude strip-shaped desulfurizers with a diameter of 4 mm, dry them at 80°C for 8 hours, and make sulfur capacity Evaluation, the measured sulfur capacity of the desulfurizer is 33.6%.

[...

Embodiment 2

[0024] Weigh 181.2 g of Cu (NO 3 ) 2 ·3H 2 O and 43.6 g of Zn (NO 3 ) 2 ·6H 2 O, placed in a stirring reactor, add 800ml of water, and stir at room temperature until the copper salt and zinc salt are completely dissolved. Then weigh 100 grams of solid sodium carbonate and 11.6 grams of diatomaceous earth, slowly add to the above mixed solution, then use sodium carbonate to adjust the pH value of the solution to 8, and continue to stir for 10 minutes. Filter the precipitate and wash the precipitate with water until Na in the eluent + Stop when the ion mass percent concentration is less than 0.5%. The precipitate was dried to obtain a filter cake.

[0025] Weigh 99 grams of the above-mentioned filter cake and 1 gram of binder, mix them with water, knead them, shape them on a small twin-screw extruder, extrude a strip-shaped desulfurizer with a diameter of 4 mm, and dry them at 70 ° C for 10 hours to make sulfur Capacity evaluation, the measured sulfur capacity of the des...

Embodiment 3

[0027] Weigh 150 g of CuSO 4 ·5H 2 O and 57.5 g ZnSO 4 ·7H 2 O, put in a 2000ml stirred reactor, add 800ml of water, stir at room temperature until the copper salt and zinc salt are completely dissolved. Then weigh about 105 grams of solid potassium carbonate and 16 grams of diatomaceous earth, slowly add to the above mixed solution, then adjust the pH of the solution to 8.5 with solid potassium carbonate, and continue stirring for 15 minutes. Filter the precipitate, wash the precipitate with water until K in the eluent + Stop when the ion mass percent concentration is less than 0.5%. The precipitate was dried to obtain a filter cake.

[0028] Weigh 97 grams of the above-mentioned filter cake and 3 grams of binder, mix it with water, knead it, shape it on a small twin-screw extruder, extrude a bar-shaped desulfurizer with a diameter of 4 mm, and dry it at 90 ° C for 4 hours to make sulfur According to capacity evaluation, the sulfur capacity of the desulfurizer is 30.6%....

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Abstract

The invention discloses a normal-temperature desulfurizer and a preparation method thereof. The desulfurizer comprises a carrier, a binder, basic zinc carbonate, Cu2(OH)2CO3 and similar malachite. The preparation method comprises the following steps of: (a) configuring a soluble zinc salt solution and a soluble copper salt solution; (b) controlling a PH value of a reaction end solution with a solid carbonate and carrier mixture to obtain sediments; (c) filtering and washing a filter cake obtained in the step (b) in water; and (d) drying the filter cake obtained in the step (c), and after uniformly mixing the dried filter cake with the binder according to the weight ratio of 95:5 to 99:1, extruding, moulding and drying to obtain the desulfurizer. The desulfurizer is suitable for removing hydrogen sulfide at normal temperature and can reach 40 percent of penetrating sulfur capacity at normal temperature and normal pressure.

Description

technical field [0001] The invention relates to a desulfurizer, in particular to a malachite-like desulfurizer with high sulfur capacity at normal temperature. Background technique [0002] Hydrogen sulfide widely exists in industrial gases such as natural gas, petroleum associated gas, refinery waste gas, and coal gas. When hydrogen sulfide exists in large quantities in the atmosphere, it will cause environmental pollution problems such as acid rain. If it exists in industrial production, it will cause downstream catalyst poisoning. , shorten the service life of the catalyst, and even lead to problems such as the failure of the catalytic reaction. Therefore, in order to avoid various hazards caused by hydrogen sulfide to industrial production and life, people often use desulfurizers to remove hydrogen sulfide. [0003] In "precipitation pH vs. CuO / ZnO / Al 2 o 3 Influence of Catalyst Precursor Properties" (from "Petrochemical Industry", Volume 33, Issue 7, Pages 622-626, 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/52C01G3/00C01G9/00
Inventor 汪祥胜吴志强
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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