Preparation method of mercury removal adsorbent based on activated coke and product
An adsorbent and activated coke technology, applied in the field of preparation of mercury removal adsorbents, can solve the problems of poor product quality consistency, uneven loading, low sulfur loading rate, etc., achieve high product consistency, solve low sulfur loading rate, The effect of increasing the sulfur loading rate
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[0025] In a specific embodiment, the preparation method of the activated coke-based mercury removal adsorbent provided by the present invention uses small-particle activated coke as raw material, supplemented with a certain proportion of sulfur, and adopts the method of rotating and heating in a closed reactor Prepare. Such as figure 1 As shown, it specifically includes the following steps:
[0026] S1: Mix active coke with a preset index and sulfur with a preset particle size according to a preset ratio to obtain a mixture; specifically, the active coke is unshaped granular coal-based active coke, and the preset index is a particle size of 3mm ~8mm, specific surface area 300m2 / g~600m2 / g, ignition point ≥ 420°C, preset particle size of the sulfur is 40 mesh to 200 mesh, preset ratio of active coke and sulfur in the mixture The ratio is a preset mass ratio, and the preset mass ratio is active coke:sulfur=100:3˜100:20.
[0027] That is to say, in the preparation stage of raw ...
Embodiment 1
[0039] First of all, the coal quality amorphous granular activated coke selected in the test has a particle size of 2mm-3mm, a specific surface area of 550m2 / g, an ignition point of 440°C, and is dried at 105°C for 2 hours before use; the sulfur is crushed to 60-160 mesh. Weigh 100 grams of screened active coke in proportion, and then weigh 10 grams of sulfur (according to the sulfur-to-carbon ratio of 10%), and manually mix and stir in a glass container.
[0040] Transfer the primary mixed active coke and sulfur samples into the special closed reactor for the test, fully tighten it and then shake it gently for secondary mixing, then place the closed reactor in the tubular resistance furnace, and connect the rotating system at both ends .
[0041] Set the test parameters related to co-thermal modification load. In this example, set the heating rate to 10°C / min, and keep it at the final reaction temperature of 550°C for 2 hours. The reactor rotation frequency is 15Hz. Stop th...
Embodiment 2
[0044] First of all, the coal quality amorphous granular activated coke selected in the test has a particle size of 5mm-6mm, a specific surface area of 535m2 / g, an ignition point of 440°C, and is dried at 105°C for 2 hours before use; the sulfur is crushed to 60-160 mesh. Weigh 100 grams of screened active coke in proportion, and then weigh 5 grams of sulfur (according to the sulfur-to-carbon ratio of 5%), and manually mix and stir in a glass container.
[0045] Transfer the primary mixed active coke and sulfur samples into the special closed reactor for the test, fully tighten it and then shake it gently for secondary mixing, then place the closed reactor in the tubular resistance furnace, and connect the rotating system at both ends .
[0046] Set the test parameters related to the co-thermal modification load. In this example, the heating rate is set to 5°C / min, and the final reaction temperature is kept at 400°C for 4 hours. The reactor rotation frequency is 10Hz, and th...
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