Method for preparing modified petroleum coke based mercury removal adsorbent
An adsorbent and petroleum coke technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as high operating costs, industrial application restrictions, etc., to ease the pressure of governance, and the method is simple , The effect of saving production costs
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Embodiment 1
[0023] The comparative raw petroleum coke was crushed and ground with an agate mortar, and sieved with a corresponding standard sieve to obtain samples within the particle size range of 56-106 μm; the samples to be processed were put into a nickel boat and dried in an oven at 40 °C; weighed Take 2g of the original sample and put it into a quartz reaction tube, in high-purity N 2 Under the protection of the atmosphere, the tube furnace operates at 5°C min -1 After the heating rate rises from room temperature to 600 °C, it is immediately switched to SO with a concentration of 50% 2 gas, SO 2 Switch to N 2 , stop heating, take it out after cooling to room temperature, and prepare a modified petroleum coke-based mercury-removing adsorbent. The specific surface area is 356.85m 2 g -1 , the micropore volume is 0.14cm 3 g -1 , the sulfur content is 21.36%, and it is applied to mercury removal: the initial mercury removal efficiency is about 90%, and it remains at about 25% aft...
Embodiment 2
[0025] Use an agate mortar to crush and grind the original petroleum coke for comparison, and use the corresponding standard sieve to sieve to obtain samples within the particle size range of 56-106 μm; put the samples to be processed into a nickel boat, and place them in an oven for drying at 80 °C; Take 2g of the original sample and put it into a quartz reaction tube, in high-purity N 2 Under the protection of the atmosphere, the tube furnace operates at 15°C min -1 After the heating rate rises from room temperature to 650 °C, it is immediately switched to SO with a concentration of 50% 2 gas, SO 2 Switch to N 2 , stop heating, take it out after cooling to room temperature, and prepare a modified petroleum coke-based mercury-removing adsorbent. The specific surface area is 490.35m 2 g -1 , the micropore volume is 0.20cm 3 g -1 , the sulfur content is 20.15%, and it is applied to mercury removal: the initial mercury removal efficiency is as high as 93%, and it remains ...
Embodiment 3
[0027] Use an agate mortar to crush and grind the comparative raw petroleum coke, and sieve with a corresponding standard sieve to obtain samples within the particle size range of 56-106 μm; put the samples to be processed into a nickel boat, and dry them in an oven at 120 °C; Take 2g of the original sample and put it into a quartz reaction tube, in high-purity N 2 Under the protection of the atmosphere, the tube furnace operates at 15°C min -1 After the heating rate rises from room temperature to 700 °C, it is immediately switched to SO with a concentration of 50% 2 Gas, SO 2 Switch to N 2 , stop heating, take it out after cooling to room temperature, and prepare a modified petroleum coke-based mercury-removing adsorbent. The specific surface area is 347.98m 2g -1 , the micropore volume is 0.14cm 3 g -1 , the sulfur content is 18.49%, and it is applied to mercury removal: the initial mercury removal efficiency is above 95%, and it remains at about 30% after 120 minutes...
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