Preparation method of nitrogen-enriched modified desulfurization adsorption material
An adsorption material and modification technology, which is applied in the field of preparation of desulfurization materials, can solve the problems of small number of oxygen-containing and nitrogen-containing functional groups on the surface, unstable desulfurization efficiency, single surface structure, etc., and achieve rich nitrogen-containing functional groups, cheap raw materials, The process is simple and controllable
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Embodiment 1
[0021] 1. Grind 51g of bituminous coal and 34g of semi-coal particles into 220-mesh coal powder; mix 48g of coal powder with 16g of resole phenolic resin and 12g of deionized water at a stirring speed of 600r / min, and then roll it with a flat die to make The granulator is extruded into a cylindrical shape under a pressure of 30MPa to obtain shaped carbon;
[0022] 2. Carbonize the above formed carbon in a high-temperature tube furnace from room temperature to 650°C for 1 hour, then raise the temperature to 850°C, pass in 35mL / min water vapor to activate for 4 hours, and naturally cool down to room temperature to obtain a porous carbon material;
[0023] 3. Raise 150g of the above porous material from room temperature to 600°C in a high-temperature tube furnace, then pass through 40mL / min triethanolamine, keep it for 1h, and then cool naturally to obtain a nitrogen-enriched modified desulfurization porous adsorption material.
[0024] figure 1 The SEM image of the nitrogen-enr...
Embodiment 2
[0026] 1. Grind 60g of coking coal and 20g of semi-coke particles into 260-mesh coal powder; mix 70g of coal powder with 25g of starch and 20g of deionized water at a stirring speed of 700r / min, and then use a flat-die rolling granulator to Extruded into a cylindrical shape under a pressure of 40MPa to obtain shaped carbon;
[0027] 2. Carbonize the above formed carbon in a high-temperature tube furnace from room temperature to 700°C for 2 hours, then raise the temperature to 900°C, pass in 15mL / min water vapor to activate for 2 hours, and naturally cool down to room temperature to obtain a porous carbon material;
[0028] 3. Raise 200g of the above-mentioned porous material from room temperature to 700°C in a high-temperature tube furnace, then pass through 40mL / min ammonia water, keep it for 3 hours, and then cool naturally to obtain a nitrogen-enriched modified desulfurization porous adsorption material.
[0029] figure 2 The SEM image of the nitrogen-enriched modified de...
Embodiment 3
[0031] 1. Grind 66g of anthracite and 44g of semi-coal particles into 300-mesh coal powder; mix 80g of coal powder with 30g of starch and 25g of deionized water at a stirring speed of 750r / min, and then use a flat-die rolling granulator to Extruded into a cylindrical shape under a pressure of 45MPa to obtain shaped carbon;
[0032] 2. Carbonize the above formed carbon in a high-temperature tube furnace from room temperature to 750°C for 3 hours, then raise the temperature to 950°C, pass in 25mL / min water vapor to activate for 3 hours, and naturally cool down to room temperature to obtain a porous carbon material;
[0033] 3. Raise 300g of the above-mentioned porous material from room temperature to 800°C in a high-temperature tube furnace, then feed 50mL / min of tetraethylenepentamine for 2 hours, and then cool naturally to obtain a nitrogen-enriched modified desulfurization porous adsorption material.
[0034] image 3 The SEM image of the nitrogen-enriched modified desulfuri...
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