A method for extracting montan wax from lignite
A montan wax and lignite technology, applied in the chemical industry, can solve the problems of difficult recovery and utilization of mixed solvents, high quality of montan wax products, and low extraction rate of extraction solvents, and achieve low toxicity, low environmental hazards, and high production efficiency.
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Embodiment 1
[0035] (1) Preparation of lignite particles:
[0036] Put the lignite lignite into a pulverizer and smash it through 0.3mm and 0.1mm sieve to obtain lignite particles of 0.1~0.3mm. For fine lignite powder with a particle size of less than 0.1mm, add it to the granulator to obtain granules. For lignite particles with a diameter of 0.1~0.3mm, the lignite particles obtained are dried in an oven at 60°C until the moisture content of the lignite particles is 1% by mass percentage;
[0037] (2) Prepare a solution containing montan wax:
[0038] Add 100g of the lignite particles dried in step (1) to 100g of n-butanol, stir and extract at 90°C for 2 hours, with a stirrer speed of 200r / min; suction and filter the extract to obtain filtrate B and filter residue A, and then Wash the filter residue with 100 g of n-butanol at 90°C, combine the filtrate B and the washing solution C to obtain a solution D containing montan wax;
[0039] (3) Obtain montan wax:
[0040] The solution D prepared in step...
Embodiment 2
[0043] (1) Preparation of lignite particles:
[0044] Put the lignite lignite into a pulverizer to pulverize, pass through a 0.9mm and 0.3mm sieve to obtain lignite particles of 0.3~0.9mm, and add the lignite fine powder with a particle size of less than 0.3mm to the granulator to obtain granules. For lignite particles with a diameter of 0.3~0.9mm, the lignite particles obtained are dried in an oven at 70°C until the moisture content of the lignite particles is 3% by mass;
[0045] (2) Prepare a solution containing montan wax:
[0046] Add 150g of the lignite particles dried in step (1) to 450g of n-pentanol, stir and extract at 95°C for 3 hours, with a stirrer speed of 200r / min; suction and filter the extract to obtain filtrate B and filter residue A, and then Wash the filter residue with 200 g of n-pentanol at 95°C, combine the filtrate B and the washing liquid C to obtain a solution D containing montan wax;
[0047] (3) Obtain montan wax:
[0048] The solution D prepared in step (2...
Embodiment 3
[0051] (1) Preparation of lignite particles:
[0052] Put the lignite lignite into a pulverizer to pulverize, pass through a 0.9mm and 1.2mm sieve respectively to obtain lignite particles of 0.9~1.2mm, and add the lignite fine powder with a particle size of less than 0.9mm to the granulator to obtain pellets. For lignite particles with a diameter of 0.9-1.2mm, the lignite particles obtained are dried in an oven at 80°C until the moisture content of the lignite particles is 5% by mass;
[0053] (2) Prepare a solution containing montan wax:
[0054] Add 200g of the lignite particles dried in step (1) to 800g of isoamyl alcohol, stir and extract at 100°C for 4 hours, with a stirrer speed of 300r / min; suction and filter the extract to obtain filtrate B and filter residue A, and then Wash filter residue A with 300 g of isoamyl alcohol at 100°C, combine filtrate B and washing liquid C to obtain solution D containing montan wax;
[0055] (3) Obtain montan wax:
[0056] The solution D prepare...
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