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Normal-temperature desulfurizer and preparation method thereof

A desulfurization agent, normal temperature technology, applied in separation methods, chemical instruments and methods, copper compounds, etc., can solve the problems that other properties have not been studied, performance has not been studied, and desulfurization is not involved, so as to increase production costs and high precision , The effect of simplifying the process

Active Publication Date: 2011-06-15
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

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 136.4 grams of CuCl 2 .2H 2 O and 27.2 g ZnCl 2 , Placed in a 2000ml reactor with stirring, add 800ml of water, and stir at room temperature until the copper salt and zinc salt are completely dissolved. Weigh 90 grams of solid ammonium carbonate and 13 grams of kaolin, slowly add them 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 is less than 0.5%. The precipitate is dried to obtain a filter cake.

[0021] Weigh 95 grams of the above filter cake and 5 grams of binder and mix them with water, wetting and kneading, molding on a small twin-screw extruder, extruding a strip desulfurizer with a diameter of 4mm, drying at 80°C for 8 hours, and making the sulfur content Evaluation showed that the sulfur capacity of the desulfurizer was 33.6%.

[00...

Embodiment 2

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

[0025] Weigh 99 grams of the above filter cake and 1 gram of binder and mix them with water, wetting and kneading, molding on a small twin-screw extruder, extruding a strip of desulfurizer with a diameter of 4mm, drying at 70°C for 10 hours, and making the sulfur content Evaluation shows that the sulfur capacity of the desulfurizer is 40%.

Embodiment 3

[0027] Weigh 150 grams of CuSO 4 .5H 2 O and 57.5 g ZnSO 4 .7H 2 O, placed in a 2000ml reactor with stirring, add 800ml of water, and 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 them to the above mixed solution, then use solid potassium carbonate to adjust the pH of the solution to 8.5, and continue to stir for 15 minutes. Filter the precipitate, wash the precipitate with water until K in the eluent + Stop when the ion mass percentage is less than 0.5%. The precipitate is dried to obtain a filter cake.

[0028] Weigh 97 grams of the above filter cake and 3 grams of binder, mix them with water, knead them, and shape them on a small twin-screw extruder. Extrude a strip desulfurizer with a diameter of 4 mm, dry at 90°C for 4 hours, and make the sulfur capacity It is evaluated that 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 is widely present in natural gas, petroleum-associated gas, refinery exhaust gas, coal gas and other industrial gases. When hydrogen sulfide exists in the atmosphere in large quantities, it will cause environmental pollution problems such as acid rain, and it will cause downstream catalyst poisoning when it exists in industrial production. , Shorten the service life of the catalyst, and even lead to problems such as failure of the catalytic reaction. Therefore, in order to avoid the 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 The influence of the properties of the catalyst precursor" (from "Petrochemical Industry" 2004 Vol. 33, Issue 7,...

Claims

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Application Information

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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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