Acetone-Nine Heaven High-Tech

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Acetone

Background technology

Acetone is a colorless transparent liquid with a special pungent smell. Miscible in water and methanol, ethanol, ether, chloroform, pyridine and other organic solvents, flammable, volatile, more active chemical properties. Acetone is mainly used as a solvent in the industry for explosives, plastics, rubber, fiber, leather, grease, paint and other industries, but also as a synthetic ketene, acetic anhydride, iodoform, polyisoprene rubber, methyl methacrylate, chloroform, epoxy resin and other substances important raw materials.

Process comparison

Taking 4000 tons/year of acetone dehydration as an example, the initial water content of acetone is 20wt.%, and the water content of acetone product is less than or equal to 0.5wt.%. The operation energy consumption of packed tower distillation, high gravity distillation and membrane dehydration technology are compared respectively.

Name	packed column distillation	high-gravity distillation	Molecular sieve membrane equipment
Steam t/t	1.45	1.22	0.41
Cooling water m³/t	150	110	36
Electricity kWh/t	15	50	28.7
Yield	Approximately 95%	95~96%	≥98%
Operation	The operation is complicated, so it is necessary to pay attention to the change of the composition of the tower top and adjust the operation in time.	Simple operation, high degree of automation, but high maintenance cost of high gravity rotating bed	Simple operation, high degree of automation, stable product quality
Operating expenses	407.5	377	138.4
Remarks	Electricity: 1 yuan/kWh; Steam: 250 yuan/t; Cooling water: 0.2 yuan/t