Device and method for preparing biomass carbon-based demercuration adsorbents
A biomass carbon and preparation device technology, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of shortening biomass carbon-based mercury removal adsorbents, difficult large-scale production, and large heat consumption. Achieve the effects of improving practicability and economy, efficient removal, and optimizing overall performance
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[0034] Example 1
[0035] A preparation method of a biomass carbon-based mercury removal adsorbent. In this embodiment, peanut shells (PS) are used as raw materials, and the raw materials of peanut shell particles with a particle size of less than 1 mm are prepared through air drying, crushing and screening.
[0036] Weigh about 50g of peanut shell pellet raw materials into the feeding bin 6. 2 In the atmosphere, the fixed bed body 2 is heated to 600°C, and then the feed valve 5 is opened, and the peanut shell particles are quickly added to the fixed bed for pyrolysis for 10 minutes; after the pyrolysis is over, turn off the intelligent temperature controller 3 and continue to switch on Enter N 2 , And use the telescopic rake to loosen the pyrolysis of the peanut shells and cool them to room temperature. 2 ; If it is taken out and dried (90℃) and broken to less than 0.5 mm, the required peanut shell pyrolysis (PS600) will be obtained.
[0037] Turn on the constant flow pump 16, deli...
Example Embodiment
[0039] Example 2
[0040] The peanut shell pyrolysis coke (PS600), peanut shell impregnated coke (PS600-3%KI) and peanut shell vapor activated coke (PS600-3%KI-A) obtained in Example 1 were selected in the fixed bed mercury adsorption test device Test its mercury adsorption performance. In the experiment, use N 2 To simulate flue gas, the total flow rate is 2 L / min, and the initial mercury concentration is 30.2 μg / m 3 , The adsorption temperature is 140℃, the adsorption time is 160 min, the adsorbent loading is 300 mg, and the empty tower velocity is 19108 h -1 . The test results show that the unit mercury adsorption capacity of peanut shell vapor activated coke (PS600-3%KI-A) and peanut shell impregnated coke (PS600-3%KI) in Example 1 are 29.14 μg / g and 27.42 μg / g, respectively , Which are 4.47 times and 4.22 times of peanut shell pyrolysis (PS600) respectively.
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