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Copper-containing solution impregnated modified biomass coke demercuration adsorbent and preparation method thereof

A technology of biomass coke and adsorbent, which is applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of low resistance to high temperature and low resistance to sulfur poisoning, and achieve improved affinity and applicable Small range, avoid damage effect

Pending Publication Date: 2021-08-31
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, ammonium halide salt solution is usually used to impregnate and modify biomass coke to further improve the mercury removal efficiency of the adsorbent, but the biomass coke treated by this method still has low resistance to sulfur poisoning , low resistance to high temperature and other disadvantages

Method used

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  • Copper-containing solution impregnated modified biomass coke demercuration adsorbent and preparation method thereof
  • Copper-containing solution impregnated modified biomass coke demercuration adsorbent and preparation method thereof
  • Copper-containing solution impregnated modified biomass coke demercuration adsorbent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Select and purchase high-quality and cheap biomass materials from the market as raw materials, wash the purchased biomass materials, and then use a crusher to cut the biomass raw materials. After drying and sieving, the particle size is between 0.08-1.2mm. Biomass particles in between; put the sample into a crucible and place it in a muffle furnace, pyrolyze it for 10 minutes under the condition of anaerobic and high temperature of 500 ℃, and after natural cooling, grind and sieve to obtain 0.1-0.3mm biomass coke Particles; Weigh 5g of biomass char particles, pour into 250mL, 0.1mol / L CuCl 2 In the solution, use a magnetic stirrer to stir for 6 hours, and then let it stand for 12 hours; use a funnel to filter and separate the modified solution and the modified biomass coke, and use deionized water to wash the modified biomass coke until the water at the lower end of the funnel is colorless; The pure modified coke was placed in an oven and dried at 80°C for 6 hours to ob...

Embodiment 2

[0036] Select and purchase high-quality and cheap biomass materials from the market as raw materials, wash the purchased biomass materials, and then use a crusher to cut the biomass raw materials. After drying and sieving, the particle size is between 0.08-1.2mm. Biomass particles in between; put the sample into a crucible and place it in a muffle furnace, and pyrolyze it for 10 minutes under the condition of anaerobic and high temperature of 600°C, and after natural cooling, grind and sieve to obtain 0.1-0.3mm biomass coke Particles; Weigh 5g of biomass char particles, pour into 250mL, 0.1mol / L CuCl 2 In the solution, use a magnetic stirrer to stir for 6 hours, and then let it stand for 12 hours; use a funnel to filter and separate the modified solution and the modified biomass coke, and use deionized water to wash the modified biomass coke until the water at the lower end of the funnel is colorless; The pure modified coke was placed in an oven and dried at 80°C for 6 hours t...

Embodiment 3

[0038] Select and purchase high-quality and cheap biomass materials from the market as raw materials, wash the purchased biomass materials, and then use a crusher to cut the biomass raw materials. After drying and sieving, the particle size is between 0.08-1.2mm. Biomass particles in between; put the sample into a crucible and place it in a muffle furnace, pyrolyze it for 10 minutes under the condition of anaerobic and high temperature of 500 ℃, and after natural cooling, grind and sieve to obtain 0.1-0.3mm biomass coke Particles; Weigh 5g of biomass char particles, pour into 250mL, 0.15mol / L CuCl 2In the solution, use a magnetic stirrer to stir for 6 hours, and then let it stand for 12 hours; use a funnel to filter and separate the modified solution and the modified biomass coke, and use deionized water to wash the modified biomass coke until the water at the lower end of the funnel is colorless; The pure modified coke was placed in an oven and dried at 80°C for 6 hours to ob...

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Abstract

The invention belongs to the field of coal-fired flue gas demercuration, and particularly relates to a copper-containing solution impregnated modified biomass coke demercuration adsorbent and a preparation method thereof. Biomass coke particles with the particle size of 0.1-0.3 mm and a copper halide solution are mixed and stirred, and undergo impregnating modification and standing to obtain a mixed solution, and the mixed solution is filtered, washed and dried to obtain the copper halide solution modified biomass coke demercuration adsorbent. The biomass coke is impregnated and modified by using the copper halide solution, so that ash in micropores in the surface of the biomass coke is removed by washing, the physical adsorption area is increased, a large number of chemical adsorption active sites are generated on the surface of the adsorbent, and the chemical adsorption capacity of the adsorbent on mercury is further improved; the toxic effect of SO2 on mercury removal of the adsorbent can be weakened by dipping the modified biomass coke adsorbent with the copper-containing solution; and the adsorbent is clean and environment-friendly, short in preparation process, low in manufacturing cost and high in mercury removal efficiency, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of mercury removal from coal-burning flue gas, and in particular relates to a mercury-removing adsorbent for impregnating modified biomass coke in a copper-containing solution and a preparation method thereof. Background technique [0002] Energy is one of the hubs for the normal operation of human society. In modern society, people's demand for energy is gradually increasing. Although many clean new energy sources have been developed, fossil energy is still the main body of the energy structure. As the largest developing country in the world, my country has a huge demand for energy. Coal is my country's main fossil energy, supporting the operation and development of my country's modern power generation, metallurgy and other industries. Coal is rich in sulfur, nitrogen and some trace elements, which will produce corresponding pollutants after burning. The treatment technology of sulfur and nitrogen pollutants is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01J20/0237B01D53/02B01D2258/0283B01D2257/602
Inventor 朱一铭吴建飞王卉冉恒源吴京懋冯义斐沈畅王嘉君
Owner NANJING UNIV OF SCI & TECH
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