Modified akadama soil adsorbent and preparation method thereof

A technology of red jade soil and adsorbent, which is applied in the field of modified red jade soil adsorbent and its preparation, can solve the problems of poor red jade soil effect, achieve low cost, facilitate large-scale popularization and use, and reduce the cost of mercury removal

Inactive Publication Date: 2017-04-26
HENAN TIMECLOUD COMM 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 red jade soil 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 red jade soil adsorbent is composed of the following raw materials in parts by weight: 34 parts of red jade soil, 2 parts of leveling agent OP, 5 parts of tannic acid, and 13 parts of propylene glycol.

[0019] Mix propylene glycol with 7.8 times the mass of deionized water to prepare a propylene glycol solution. Mix and grind red jade soil and leveling agent OP, pass through a 120-mesh sieve, then add propylene 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 red jade soil adsorbent is composed of the following raw materials in parts by weight: 42 parts of red jade soil, 6 parts of leveling agent OP, 13 parts of tannic acid, and 21 parts of propylene glycol.

[0022] Mix propylene glycol with 7.8 times the mass of deionized water to prepare a propylene glycol solution. Mix and grind red jade soil and leveling agent OP, pass through a 120-mesh sieve, then add propylene 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 red jade soil adsorbent is composed of the following raw materials in parts by weight: 36 parts of red jade soil, 3 parts of leveling agent OP, 7 parts of tannic acid, and 15 parts of propylene glycol.

[0025] Mix propylene glycol with 7.8 times the mass of deionized water to prepare a propylene glycol solution. Mix and grind red jade soil and leveling agent OP, pass through a 120-mesh sieve, then add propylene 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 akadama soil adsorbent and a preparation method thereof. The modified akadama soil adsorbent is prepared from the following raw materials in parts by weight: 34 to 42 parts of akadama soil, 2 to 6 parts of a levelling agent OP, 5 to 13 parts of tannic acid and 13 to 21 parts of propylene glycol. The adsorbent is obtained by mixing and grinding the akadama soil and the levelling agent OP, then, adding propylene glycol solution, sealing and performing heating stirring treatment, heating and adding the tannic acid dropwise, cooling, performing ultrasonic treatment, stirring until a product is dry, and performing high-temperature sintering. According to the adsorbent which is prepared by mixing and grinding the akadama soil and the levelling agent OP and treating through the propylene glycol and the tannic acid, the specific surface area is prompted to be improved; when the adsorbent is applied to mercury treatment of flue gas, the mercury removal efficiency is greatly improved and reaches over 95 percent. According to the modified akadama soil adsorbent and the preparation method thereof, the process is simple, the process flow is short, the cost is low, wide-range popularization and use are facilitated, the adsorbent can be reutilized, and the mercury removal cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to a modified red jade soil adsorbent and a preparation method thereof. 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 0.22mg / 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 2+ ) and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22B01D53/02
CPCB01J20/22B01D53/02B01D2257/602B01D2258/0283B01J20/12B01J2220/4806B01J2220/4812
Inventor 不公告发明人
Owner HENAN TIMECLOUD COMM TECH CO LTD
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