38results about How to "Fast carbonization" patented technology

The invention discloses a method for preparing an agent for adsorbing and removing organic gas. The agent for adsorbing and removing the organic gas is prepared from tetraethyl orthosilicate, anhydrous ethanol, N,N-dimethylformamide, coconut shells, phenol, polyvinyl alcohol and other raw materials, and according to the method, porous carbon fiber which is obtained by performing multiple modification process treatment and has high mechanical strength and high adsorbability is prepared from the coconut shells; on the basis of the porous carbon fiber, loading of silica and activation of nitrogen-containing gas are achieved through the addition of the tetraethyl orthosilicate, and a large amount of a nitrogen element is introduced on the carbon fiber, so that a strong catalytic effect on sulfur-containing and nitrogen-containing compounds in the air is achieved, and stable and efficient adsorbability of benzene, toluene and other volatile toxic gas is achieved; the skeleton of the modified carbon fiber has strong adaptability to acid, alkali, high temperature and other environments, so that a long-term stable effect of adsorption and purification is achieved; and in addition, the usage mode is flexible, and good applicability to factories, homes and public places is achieved.

The invention relates to a wood microwave vacuum drying and charring device and a drying and charring method thereof. The device comprises one charring tank (box) with a tank door (3), a tank door opener (2) and a charring chamber (1), a vacuum system, and one or more microwave sources (6) generating the microwave, a heat-conducting oil furnace system and a material preparation and feed system. The drying and charring method comprises the following steps: A. rising the temperature inside the tank to 30-50 DEG C, and then to 80-130 DEG C at the rate of 2-8 DEG C / h; B. preserving the temperature for 2-100 hours; C. vacuumizing the tank for 4-100 hours; D. starting a hot recycle pump to control the oil furnace temperature, the oil flow rate and the pressure inside the tank for 4-100 hours: E. turning off the microwave source and a heat source, opening an intake and exhaust valve (39) to discharge the pressure inside the tank to 0 and lower the temperature to 70-130 DEG C, and then closing the intake and exhaust valve (39); and F. starting a vacuum pump (22) to lower the temperature inside of the tank by air circulation and removing the wood from the tank when the temperature decreases to 30-70 DEG C. The device and the method help char the wood evenly, shorten the production cycle by 60% compared with the conventional method, and lower the energy consumption by 70%, thus greatly reducing the production cost.