Fe-based mercury remover and preparation method thereof
An iron-based mercury removal agent and additive technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of dangerous production process, high cost, and difficult active components, and achieve The effect of safe preparation process, low product cost and easy availability of raw materials
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Embodiment 1
[0025] Weigh 100 g of sodium sulfide nonahydrate and dissolve it in 3800 mL of water, and cool the solution to -12 o C; Another 112 g of ferric nitrate nonahydrate was dissolved in 500 mL of water, then the ferric nitrate solution was added to the sodium sulfide solution, and the reaction temperature was controlled to be -10 o C, after the reaction is completed, the resulting product is filtered and washed, and then 122 g of pseudo-boehmite and 1.5 g of CMC are added to mix and grind and extruded, and then dried in a vacuum oven at 20 o Dry at C for 60 h to obtain the finished mercury removal agent, which contains 19% of the active component iron sulfide, 80% of the carrier pseudo-boehmite, and 1% of the additive CMC.
Embodiment 2
[0027] Weigh 113.5 g of sodium sulfide nonahydrate and dissolve it in 500 mL of water, and cool the solution to 10 o C; Another 75.6g ferric sulfate is slowly added to the sodium sulfide solution, and the reaction temperature is controlled to be 15 o C, after the reaction is completed, the resulting product is filtered and washed, and then 51.5 g of α-aluminum hydroxide and 2.5 g of safflower powder are added, mixed and rolled, then extruded, and dried in a vacuum oven at 20 o Dry at C for 60 hours to obtain the finished mercury removal agent, which contains 35% of the active component iron sulfide, 62% of the carrier α-aluminum hydroxide, and 3% of the additive scallop powder.
Embodiment 3
[0029] Weigh 200 g of ammonium sulfide solution, and cool the solution to 20 o C; Take another 95.5g of ferric chloride hexahydrate and dissolve it in 1000 mL of water, then add the ferric sulfate solution into the ammonium sulfide solution, and control the reaction temperature to be 25 o C, after the reaction is completed, the resulting product is filtered and washed, and then 33 g of molecular sieve powder and 3.7 g of maltodextrin are added, mixed and rolled, and extruded, and dried in a vacuum oven at 30 o Dry at C for 40 hours to obtain the finished mercury removal agent, which contains 50% of the active component iron sulfide, 45% of the carrier molecular sieve, and 5% of the additive maltodextrin.
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