High-sulfur-capacity low-cost desulfurizing agent and preparation method thereof

The technology of desulfurizer and auxiliary agent is applied in the field of high sulfur capacity and low cost desulfurizer and its preparation, which can solve the problems of poor water resistance, low sulfur capacity and low strength of desulfurizer, achieve good synergistic effect, reduce preparation cost, Best water resistance

Inactive Publication Date: 2016-06-15
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

[0007] The purpose of the present invention is to solve the technical problems of low strength, poor water resistance and low sulfur capacity of the desulfurizer in the prior art, and further provide a low-cost desulfurizer with high sulfur capacity

Method used

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  • High-sulfur-capacity low-cost desulfurizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1) Put 1000g of iron oxyhydroxide, 100g of volcanic ash, 100g of fly ash, and 100g of calcium hydroxide into a mixing mill and stop mixing for 30 minutes to obtain a mixture;

[0055] 2) Add 400g of water to the above mixture, and mix and mill for 10 minutes; the mixed and milled strips to be extruded are extruded into a screw extruder to obtain strips with a diameter of 3.8mm-4.2mm, and the strips are placed at 60 Dry at ℃ for 8 hours to obtain high sulfur capacity and low cost desulfurizer A. The measured sulfur capacity of desulfurizer A is 45%, and the radial crush resistance is 89N / cm.

Embodiment 2

[0057] 1) Put 1500g iron oxyhydroxide, 50g volcanic ash, 200g fly ash, and 200g calcium sulfate into a mixer mill and stop mixing milling for 10 minutes to obtain a mixture;

[0058] 2) Add 550g of water to the above mixture, and mix and mill for 15 minutes; the mixed and milled strips to be extruded are extruded into a hydraulic extrusion machine to obtain strips with a diameter of 3.8mm-4.2mm, and the strips are placed at 110 Dry at ℃ for 2 hours to obtain desulfurizer B with high sulfur capacity and low cost. The measured sulfur capacity of desulfurizer B is 42%, and the radial crush resistance is 135N / cm.

Embodiment 3

[0060] 1) Put 1000g ferric oxyhydroxide, 300g fly ash, and 100g calcium sulfate hemihydrate into a mixer and grind for 35 minutes and then stop mixing to obtain a mixture;

[0061] 2) Add 350g of water to the above materials, and mix and mill for 20 minutes; the mixed and milled strips to be extruded are extruded into a screw extruder to obtain strips with a diameter of 3.8mm-4.2mm, and the strips are placed at 10°C Under drying, the drying time is 24 hours to obtain a high-sulfur capacity and low-cost desulfurizer C. The measured sulfur capacity of the desulfurizer C is 36%, and the radial crushing resistance is 125N / cm.

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Abstract

The invention discloses a high-sulfur-capacity low-cost desulfurizing agent and a preparation method thereof.The desulfurizing agent comprises the following materials according to parts by weight: 50-95 parts of iron oxide hydroxide, 1-48 parts of an inorganic binding agent and 1-50 parts of an aid, wherein the inorganic binding agent is calcium sulfate and its hydrate and / or alkaline-earth metal hydroxide, and the aid is pulverized coal ash and / or volcanic ash.The preparation method of the desulfurizing agent comprises the following steps: 1), mixing well the iron oxide hydroxide, the inorganic binding agent and the aid to obtain a mixture; 2), adding water to the mixture, and mixing well to obtain strip material to be extruded; 3), extruding the strip material to be extruded to obtain strip material; 4), naturally drying or baking the strip material to obtain the desulfurizing agent.The desulfurizing agent is low in cost and high in sulfur capacity, is high in strength and good in water resistance, is free of argillation and caking during usage and has good environmental and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of desulfurization agent preparation, and in particular relates to a high-sulfur-capacity, low-cost desulfurizer and a preparation method thereof. Background technique [0002] Trace sulfides in industries such as natural gas exploitation, petrochemical industry, synthetic ammonia industry, methanol, coal-to-natural gas, and coal-to-oil can poison various catalysts, adsorbents, or solvents used in process production, corrode plant equipment, and seriously affect plant performance. Safe and economical production, reducing product quality, causing significant economic losses. However, the sulfides in waste water and waste gas are directly discharged to the outside, which will cause harm to the environment and humans and animals. Therefore, it is necessary to remove the sulfides in industrial raw materials and waste water and waste gas in time before they can be used later. [0003] At present, wet desulfuriza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/48B01D53/52C10L3/10C10K1/20C01B3/56
CPCB01D53/81B01D53/48B01D53/52B01D2251/00B01D2251/404B01D2257/304B01D2258/05B01D2259/128C01B3/56C01B2210/0003C10K1/004C10K1/20C10L3/103
Inventor 高群仰刘振义刘玉军刘营张君
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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