Preparation method of manganese-series hydrogen sulfide removing agent in normal-temperature environment

A technology of hydrogen sulfide and remover, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of long production process, energy consumption, side reactions, etc., and achieve improved activity of finished products, long service life, and high desulfurization accuracy. Effect

Inactive Publication Date: 2021-03-05
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desulfurizer will play a certain catalytic role at such a temperature, and some side reactions will occur, and for materials that need to be desulfurized at room temperature (such as 0-40°C), heating and heating will consume a lot of energy.
[0004] In order to overcome the above shortcomings, in recent years, the development of a normal temperature zinc oxide desulfurizer has been carried out internationally. European patent 279116 discloses a normal temperature zinc oxide desulfurizer, but its disadvantage is that its strength is poor
CN201711024119.2 discloses a load-type manganese desulfurizer used for hydrogen sulfide removal at room temperature, which is loaded by precipitation method, and the production process is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 100g of coconut shell, dry it, crush it, and pass it through a 100-mesh sieve to obtain coconut shell powder. Put the coconut shell powder into a muffle furnace, heat up to 500°C under the protection of a nitrogen atmosphere, keep warm for 45 minutes, and carbonize After cooling to room temperature, the carbonized product was put into a ball mill and passed through a 500-mesh sieve after ball milling for 25 minutes to obtain carbonized powder;

[0026] (2) Put the carbonized powder of step (1) into a Buchner funnel, wash with absolute ethanol, and obtain a filter residue after suction filtration for 8 minutes, and dry to obtain a self-made active adsorbent;

[0027] (3) take by weight 20% aluminum oxide, 80% manganese dioxide and add in the superfine pulverizer and pulverize to obtain particle diameter and be the mixed powder of 0.5 μ m, then take by weighing the copper of mixed powder 1 / 2nd amount, Nitrates of magnesium and cerium compounds are dissolved in w...

Embodiment 2

[0032] (1) Weigh 200g of coconut shell, dry it, crush it, and pass it through a 120-mesh sieve to obtain coconut shell powder. Put the coconut shell powder into a muffle furnace, heat up to 650°C under the protection of nitrogen atmosphere, keep warm for 60 minutes, and carbonize After cooling to room temperature, the carbonized product was put into a ball mill and passed through a 600-mesh sieve after ball milling for 50 minutes to obtain carbonized powder;

[0033] (2) Put the carbonized powder of step (1) into a Buchner funnel, wash with absolute ethanol, and obtain a filter residue after suction filtration for 8 minutes, and dry to obtain a self-made active adsorbent;

[0034] (3) take by weight 80% aluminum oxide, 20% manganese dioxide and add in the superfine pulverizer and pulverize to obtain particle diameter and be the mixed powder of 0.8 μ m, then take by weighing 1 / 2th amount of mixed powder nickel, The nitrates of zinc and magnesium compounds are dissolved in water...

Embodiment 3

[0039] (1) Weigh 150g of coconut shell, dry it, crush it, and pass it through a 110-mesh sieve to obtain coconut shell powder. Put the coconut shell powder into a muffle furnace, heat up to 570°C under the protection of a nitrogen atmosphere, keep warm for 50 minutes, and carbonize After cooling to room temperature, the carbonized product was put into a ball mill and passed through a 520 mesh sieve after ball milling for 40 minutes to obtain carbonized powder;

[0040] (2) Put the carbonized powder of step (1) into a Buchner funnel, wash with absolute ethanol, and obtain filter residue after suction filtration for 10 min, and dry to obtain a self-made active adsorbent;

[0041] (3) take by weight 50% aluminum oxide, 50% manganese dioxide and add in the superfine pulverizer and pulverize to obtain particle diameter and be the mixed powder of 0.6 μ m, then take by weighing the copper of mixed powder 1 / 2nd amount, Nitrates of nickel and zinc compounds are dissolved in water to fo...

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Abstract

The invention belongs to the technical field of chemical engineering, and relates to a preparation method of a manganese-based hydrogen sulfide removing agent in a normal-temperature environment. Themethod comprises the following steps of: (1) washing activated carbon with absolute ethyl alcohol, carrying out suction filtration to obtain filter residues, and carrying out drying to obtain an activated adsorbent; (2) crushing aluminum oxide and manganese dioxide to obtain mixed powder with the particle size of 0.5-0.8 mu m, weighing a certain amount of nitrate of one or more compounds of copper, nickel, zinc, magnesium and cerium, dissolving the nitrate in water to form a solution, adding the mixed powder into the solution, adding alkali liquor, and carrying out stirring to obtain a mixed solution; and (3) adding the active adsorbent obtained in the step (1) into the mixed solution obtained in the step (2), adding an auxiliary agent, carrying out stirring, still standing and filtering sequentially, putting filter residues into a drying oven, drying the filter residues , and roasting the filter residues to obtain the desulfurizing agent. The method of the invention reduces the production cost and simplifies the operation process; and the prepared manganese-series hydrogen sulfide removing agent has the advantages of high desulfurization precision at normal temperature, long service life, good mechanical strength, no influence on material chromaticity and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of a manganese-based hydrogen sulfide removing agent in a normal temperature environment. Background technique [0002] Sulfides are produced in many occasions in industrial production. For example, in the production process of producing chemical raw materials from coal or petroleum, as well as in the wastewater or waste gas discharged from general industrial production. Among them, in the production process of producing chemical raw materials from coal or petroleum, the hydrogen sulfide produced is mainly due to the fact that the raw materials contain more sulfur-containing substances, which cause the sulfur-containing substances to react during the production process and release hydrogen sulfide. , which directly leads to the poisoning and deactivation of catalyst active substances in the subsequent production process. In addition, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/0203B01J20/0222B01J20/0225B01J20/0237B01J20/0244B01J20/0296B01J20/041B01J20/08B01J20/20
Inventor 张智宏周清池罗尧鹏
Owner SINOPEC YANGZI PETROCHEM
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