Modified kaolin adsorbent, and preparation method and application of modified kaolin adsorbent

A kind of Guanyin soil and adsorbent technology, applied in chemical instruments and methods, other chemical processes, gas treatment, etc., can solve problems such as poor Guanyin soil effect, and achieve the effects of increased mechanical strength, short process flow, and improved mercury removal efficiency.

Inactive Publication Date: 2017-05-31
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is rarely used in the field of mercury removal, and some are prepared with other materials with excellent mercury removal, and the effect of Guanyin clay alone is extremely poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the embodiment of the present invention, a modified Avalokitesvara adsorbent is composed of the following raw materials in parts by weight: 34 parts of Avalokitesvara, 2 parts of Pingpingjiao, 5 parts of tannic acid, and 13 parts of dipropylene glycol.

[0019] Dipropylene glycol was mixed with 7.8 times its mass of deionized water to prepare a dipropylene glycol solution. Mix and grind Avalokitesvara and Pingpinga O, pass through a 120-mesh sieve, then add dipropylene glycol solution, heat up to 77°C and seal and stir at this temperature for 1.3h, then heat up to 92°C and add tannic acid dropwise, dropwise After completion, stir at this temperature for 10 minutes, then lower it to 65°C and ultrasonically treat it for 45 minutes with an ultrasonic power of 800W, then stir at a temperature of 99°C until dry, and then calcinate in a muffle furnace at 450°C for 4.1 hours to obtain the adsorption agent.

Embodiment 2

[0021] In the embodiment of the present invention, a modified Avalokitesvara adsorbent is composed of the following raw materials in parts by weight: 42 parts of Avalokitesvara, 6 parts of Pingpingjiao, 13 parts of tannic acid, and 21 parts of dipropylene glycol.

[0022] Dipropylene glycol was mixed with 7.8 times its mass of deionized water to prepare a dipropylene glycol solution. Mix and grind Avalokitesvara and Pingpinga O, pass through a 120-mesh sieve, then add dipropylene glycol solution, heat up to 77°C and seal and stir at this temperature for 1.3h, then heat up to 92°C and add tannic acid dropwise, dropwise After completion, stir at this temperature for 10 minutes, then lower it to 65°C and ultrasonically treat it for 45 minutes with an ultrasonic power of 800W, then stir at a temperature of 101°C until dry, and then calcinate in a muffle furnace at 450°C for 4.1 hours to obtain the adsorption agent.

Embodiment 3

[0024] In the embodiment of the present invention, a modified Avalokitesvara adsorbent is composed of the following raw materials in parts by weight: 36 parts of Avalokitesvara, 3 parts of Pingpingjiao, 7 parts of tannic acid, and 15 parts of dipropylene glycol.

[0025] Dipropylene glycol was mixed with 7.8 times its mass of deionized water to prepare a dipropylene glycol solution. Mix and grind Avalokitesvara and Pingpinga O, pass through a 120-mesh sieve, then add dipropylene glycol solution, heat up to 77°C and seal and stir at this temperature for 1.3h, then heat up to 92°C and add tannic acid dropwise, dropwise After completion, stir at this temperature for 10 minutes, then lower it to 65°C and ultrasonically treat it for 45 minutes with an ultrasonic power of 800W, then stir at a temperature of 100°C until it is dry, and then calcinate in a muffle furnace at 450°C for 4.1 hours to obtain the adsorption agent.

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PUM

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Abstract

The invention discloses a modified kaolin adsorbent, and a preparation method and an application of the modified kaolin adsorbent. The adsorbent comprises the following raw materials in parts by weight: 34-42 parts of kaolin, 2-6 parts of peregal O, 5-13 parts of tannin and 13-21 parts of dipropylene glycol. The preparation method comprises the steps of mixing and grinding the kaolin and the peregal O, then adding a dipropylene glycol solution for sealing, heating and stirring, heating up, dropwise adding the tannin, performing ultrasonic treatment after cooling, stirring to dryness, and performing high temperature calcination to form the adsorbent. The adsorbent is prepared by mixing and grinding the kaolin and the peregal O and treating with dipropylene glycol and tannin; the specific surface area is increased; the adsorbent is applied to smoke mercury treatment; and the demercuration efficiency is greatly improved and reaches above 95%. The adsorbent is simple in technology, short in technical process, low in cost and convenient to popularize and use extensively, and can be recycled, and the demercuration cost can be lowered greatly.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to a modified Guanyin soil adsorbent and its preparation method and application. Background technique [0002] Coal is the most important energy source for the entire industry, and the pollutants produced by coal combustion, except SO and NO x and CO 2 In addition, there are various forms of mercury, and a large amount of mercury released into the atmosphere will cause direct or potential harm to human health. The average mass fraction of mercury in Chinese coal is 0.22 mg / kg. Due to the massive combustion of coal, the total amount of mercury released from coal combustion is more than 1590t every year, accounting for about 50% of the world's total. During the combustion of coal, the high temperature gasifies the mercury in the coal into gaseous mercury (Hg 0 ), as the combustion gas cools and the gaseous mercury reacts with other combustibles, oxidized mercury (Hg ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01D53/02B01J20/30
CPCB01J20/12B01D53/02B01D2257/602
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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