A method and device for preparing activated carbon from waste circuit board non-metallic powder
A technology for preparing waste circuit boards and powders, which is applied in non-metallic elements, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high energy consumption, high carbonization temperature, long time consumption, etc., and achieves low energy consumption, few steps, The effect of a short preparation time
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Embodiment 1
[0017] Such as figure 1 , figure 2 As shown, the waste circuit board non-metallic powder and 30% H 3 PO 4 Add it to Reactor 3, control the solid-to-liquid ratio at 1:3g / mL, and heat it in airtight control at 35°C. At the same time, open the CO 2 Cylinder 1, through the CO pressurized by the high-pressure pump 2 2 , the pressure is controlled at 7.5MPa. After reacting for 20 minutes, by controlling the extraction valve of the outlet at the bottom of the reactor 3, the reaction mixture will be reduced to normal pressure through the pressure reducing valve 7 after the reaction mixture comes out from the bottom of the reactor, and the CO 2 The gas is recovered and recycled, and the solid-liquid mixed product enters the solid-liquid separation bottle 5 for solid-liquid separation, and the separated H 3 PO 4 Recovery solution enters H 3 PO 4 Bottle 6 is recovered and recycled. Then, the solid-phase product obtained after solid-liquid separation was reactivated for 20 minu...
Embodiment 2
[0019] Mix waste circuit board non-metallic powder with 30% H 3 PO 4 Add it to Reactor 3, control the solid-to-liquid ratio at 1:1 g / mL, heat it in airtight control, and control the temperature at 35°C. At the same time, open the CO 2 Cylinder 1, through the CO pressurized by the high-pressure pump 2 2 , the pressure is controlled at 7.5MPa. After reacting for 10 minutes, by controlling the extraction valve at the bottom outlet of the reaction kettle 3, the reaction mixture is reduced to normal pressure through the pressure reducing valve 7 after the reaction mixture comes out from the bottom of the reaction kettle, and the CO 2 The gas is recovered and recycled, and the solid-liquid mixed product enters the solid-liquid separation bottle 5 for solid-liquid separation, and the separated H 3 PO 4 Recovery solution enters H 3 PO 4 Bottle 6 is recovered and recycled. Then, the solid-phase product obtained after solid-liquid separation was reactivated for 20 minutes in a t...
Embodiment 3
[0021] Mix waste circuit board non-metallic powder with 30% H 3 PO 4 Add it to Reactor 3, control the solid-to-liquid ratio at 1:5g / mL, and heat it in airtight control at 35°C. At the same time, open the CO 2 Cylinder 1, through the CO pressurized by the high-pressure pump 2 2 , the pressure is controlled at 7.5MPa. After reacting for 30 minutes, by controlling the extraction valve at the bottom outlet of the reaction kettle 3, the reaction mixture is reduced to normal pressure through the pressure reducing valve 7 after the reaction mixture comes out from the bottom of the reaction kettle, and the CO 2 The gas is recovered and recycled, and the solid-liquid mixed product enters the solid-liquid separation bottle 5 for solid-liquid separation, and the separated H 3 PO 4 Recovery solution enters H 3 PO 4 Bottle 6 is recovered and recycled. Then, the solid-phase product obtained after solid-liquid separation was reactivated for 20 minutes in a tubular resistance furnace ...
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Abstract
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