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Preparation of high temperature gas desulfurizer

A technology of desulfurization agent and coal gas, which is applied in the field of preparation of high-temperature gas purification agent, desulfurization purification agent, and high-temperature gas desulfurization agent. Effects of increased strength, improved stability, and reduced particle size of raw materials

Inactive Publication Date: 2009-07-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this anti-powdering effect is at the expense of sulfur capacity to a certain extent, and the cycle stability is not satisfactory. Usually, after 10 cycles, the sulfur capacity has a decrease of about 10%. Will seriously restrict the commercial development of high temperature desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0016] Embodiment 1: Weigh 800g of red mud and 150g of burnt earth respectively, after grinding (below 200 mesh), add 30g of carboxymethyl cellulose, 6g of polyethylene glycol, 4g of carbon ammonia and 10g of starch. After mixing the slurry thoroughly and kneading it, let it stand for 5 hours, then shape it on a tablet press to form a sheet-like desulfurizer with a diameter of 10 mm and a height of 2 mm. After standing for 12 hours, dry it in an oven at 110°C for 3 hours , And then calcined in a muffle furnace at 750°C for 5 hours to obtain high temperature gas desulfurizer 1. After activity evaluation, its penetration sulfur capacity reached 22.45%,

Embodiment approach 2

[0017] Embodiment 2: Weigh 800g of red mud and 50g of burnt earth, respectively, after ball milling (below 200 mesh), add 60g of carboxymethyl cellulose, 13g of polyethylene glycol, 17g of carbon ammonia and 60g of starch. After mixing and kneading the slurry completely, let it stand for 8 hours, then shape it on an extruder to form a φ3 mm strip desulfurizer, dry it in a cool place for 3 days, and then place it in a muffle furnace at 800°C After calcination for 5 hours, the high-temperature gas desulfurizer 2 is obtained. After activity evaluation, its breakthrough sulfur capacity reached 25.73%, and after 10 regeneration cycles, its sulfur capacity was 24.62%.

Embodiment approach 3

[0018] Embodiment 3: Weigh 900g of red mud and 50g of burnt soil, ball mill (below 200 mesh), and add 26.5g of carboxymethyl cellulose, 6g of polyethylene glycol, 2.5g of carbon ammonia and 15g of starch. After mixing and kneading the resulting slurry, let it stand for 8 hours, then shape it on an extruder to form a φ3 mm strip desulfurizer, dry it naturally in a cool place for 3 days, and put it in a muffle furnace at 800 Calcined at ℃ for 8 hours to obtain high temperature gas desulfurizer 3. After activity evaluation, its breakthrough sulfur capacity reached 26.25%. After 10 regeneration cycles, its sulfur capacity was 24.96%.

[0019]Embodiment 4: Weigh 900g of red mud and 50g of burnt earth respectively, after grinding (below 200 mesh), add 26.5g of carboxymethyl cellulose, 6g of polyethylene glycol, 2.5g of carbon ammonia and 15g of starch. The resulting slurry was mixed thoroughly and kneaded, and placed for 5 hours, then molded on a tablet machine to form a sheet-shaped de...

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Abstract

The invention discloses a method for preparing a high-temperature coal gas desulfurizer, which belongs to the field of preparation of desulfurizer. The method comprises the following steps that: four pore-forming agents with different pore-forming characteristics are prepared, mixed with red mud and burnt earth, ball ground to be below 200 meshes, kneaded by adding water, subjected to extruded molding, and then dried and roasted at high temperature. The specific surface area of the prepared desulfurizer is between 8 and 10m / g, the pore volume is between 0.3 and 0.5cm / g, and pores with dimensions more than 120nm account for 50 percent in the pore distribution. The desulfurizer consists of 80 to 90 weight percent of red mud, 5 to 15 weight percent of adhesive, and 5 to 10 weight percent of pore-forming agent. The desulfurizer prepared by the method has the characteristics of low cost, high sulfur capacity and good stability. The method can be used in the field of high-temperature coal gas purification-key technology of integrated gasification combined cycle power generation and fuel-cell power generation technologies, and the field of desulfurization purification of chemical raw material gas prepared by taking coal, petroleum and natural gas as raw materials.

Description

Technical field [0001] The invention relates to a method for preparing a high-temperature gas desulfurizer, which belongs to the field of desulfurizer preparation, and specifically relates to a high-temperature gas purifier in integrated coal gasification combined cycle power generation and fuel cell power generation technology, and a preparation method using coal, petroleum, and natural gas as raw materials Preparation method of desulfurization purifier for chemical raw material gas. Background technique [0002] Fuel cell power generation (FC) and gas and steam combined cycle power generation (IGCC) technologies are the best way to clean and efficiently use coal today. However, coal will produce a large amount of sulfide during gasification, of which more than 90% are hydrogen sulfide. These sulfur-containing components will not only severely corrode equipment at high temperatures, but also cause serious environmental pollution when discharged into the atmosphere. Therefore, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/20
Inventor 樊惠玲上官炬谢克昌沈芳梁丽彤梁美生梁生兆苗茂谦
Owner TAIYUAN UNIV OF TECH
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