A kind of method for preparing fuel ethanol from acorn and resource utilization
A technology of fuel ethanol and resource utilization, applied in chemical instruments and methods, biofuels, waste fuels, etc., can solve problems such as not being effectively utilized, achieve good application prospects, improve feasibility and economy
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Embodiment 1
[0025] Example 1 Separation of acorn shells
[0026] Soak 10 kg of acorns in water for 48 hours to make them swell, then remove them, dry them until the rubber shells and acorn kernels are separated, and then crush the acorns separated from the kernel shells to deshell the acorns, and then use air blowing separation equipment to separate the acorns. The rubber shells and acorn kernels were separated, and a total of 2.2 kg of rubber shells and 7.8 kg of acorn kernels were obtained.
Embodiment 2
[0027] Example 2 Activated carbon prepared from rubber shell
[0028] Take 1000 g of the rubber shell and place it in a 2 L tubular closed reactor, and pass N 2 Fully replace the air in the reactor to form an anaerobic environment in the reactor, and quickly heat to 500°C for preliminary carbonization. During the carbonization process, the gaseous products are condensed to obtain 0.388m 3 Synthesis gas and 260g of wood vinegar, after no gas is produced, gradually increase the temperature of the reactor to 800°C for further carbonization for 60 minutes, and then pass through steam to activate for 20 minutes to obtain activated carbon, and finally obtain 315g of activated carbon. The calorific value of synthetic gas is determined to be 5100 kcal / m 3 , the specific surface area of activated carbon is 988 m 2 / g, pore volume 0.55 mL / g, pore diameter 1.35 nm.
Embodiment 3
[0029] Example 3 Extraction of oil and tannin by ethanol
[0030] Take 1000 g of crushed 80-mesh acorn powder, add 5 kg of absolute ethanol, place in a 10 L temperature-controllable stirring reactor, keep the temperature of the system at 75 ° C, extract for 2 h, then cool, and separate the solid and liquid. The solid phase was washed twice with absolute ethanol of the same mass as the initially added ethanol, and a total of 15 kg of the liquid phase was collected. Then add 5 kg of water to release the grease dissolved in ethanol, leave it to stand for stratification, collect the upper layer of grease, and obtain 50 g of acorn oil altogether. The ethanol solution in the lower layer was recovered by rectification, and the water in the rectification tower was evaporated to dryness and concentrated by a 5-effect evaporator, and the concentrated solution was spray-dried to obtain the rubber extract. A total of 126 g of the extract was obtained. The condensed water of the rectifica...
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