Method for preparing biomass carbon based on waste crop straw
A technology of crop straw and biomass charcoal, which is applied in the fields of biofuels, special forms of dry distillation, petroleum industry, etc. the effect
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Embodiment 1
[0031] (1) Cut the collected rice straw into 2-3mm straw particles, wash with water and 1mol / L hydrochloric acid, and then put it into a vacuum oven at 100°C for drying;
[0032] (2) Pack the pretreated and dried stalk particles into the quartz tube of the carbonization furnace, and before heating, feed helium to remove the air in the carbonization furnace, the gas flow rate is 200mL / min, and the duration is 60min;
[0033] (3) In an environment with an inert gas flow rate of 100mL / min, the temperature in the carbonization furnace was heated from room temperature to 550°C at a heating rate of 25°C / min for 2 minutes, and then the heating was stopped, so that the straw particles were heated in helium Cool to room temperature under ambient conditions to obtain a solid;
[0034] (4) The obtained solid is soaked with 1mol / L hydrochloric acid, and then washed several times with 75°C distilled water until the pH value of the final cleaning solution is neutral, and then the washed sol...
Embodiment 2
[0037] (1) Cut the collected wheat straw into 2-3mm straw particles, wash with water and 1mol / L hydrochloric acid, and then put it into a vacuum oven at 100°C for drying;
[0038] (2) Pack the pretreated and dried stalk particles into the quartz tube of the carbonization furnace, and before heating, feed helium to remove the air in the carbonization furnace, the gas flow rate is 150mL / min, and the duration is 30min;
[0039] (3) In an environment with an inert gas flow rate of 100mL / min, the temperature in the carbonization furnace was heated from room temperature to 450°C at a heating rate of 25°C / min for 1 min, and then the heating was stopped, so that the straw particles were heated in helium Cool to room temperature under ambient conditions to obtain a solid;
[0040] (4) The obtained solid is soaked with 1mol / L hydrochloric acid, and then washed several times with 75°C distilled water until the pH value of the final cleaning solution is neutral, and then the washed solid ...
Embodiment 3
[0043] (1) Cut the collected sweet potato stalks into straw particles of 2-3mm, wash with clear water and 1mol / L hydrochloric acid, and then put into a vacuum drying oven at 100°C for drying;
[0044] (2) Pack the pretreated and dried stalk particles into the quartz tube of the carbonization furnace, and before heating, feed helium to remove the air in the carbonization furnace, the gas flow rate is 250mL / min, and the duration is 45min;
[0045] (3) In an environment with an inert gas flow rate of 100mL / min, the temperature in the carbonization furnace was heated from room temperature to 500°C at a heating rate of 25°C / min for 3 minutes, and then the heating was stopped, so that the straw particles were heated in helium Cool to room temperature under ambient conditions to obtain a solid;
[0046] (4) The obtained solid is soaked with 1mol / L hydrochloric acid, and then washed several times with 75°C distilled water until the pH value of the final cleaning solution is neutral, a...
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