The purification process for crude acetone obtained from the industrial production of phenol can be designed using a combination of separation techniques to achieve at least 99% pure acetone. The initial impurities in the crude acetone may include phenol, water, and other organic compounds.Here is a proposed purification process:1. Primary distillation: The first step in the purification process is to separate the crude acetone mixture using a distillation column. The distillation column should be designed with enough theoretical plates to achieve the desired separation. The operating conditions for the distillation column should be set to maintain a temperature of around 56C the boiling point of acetone at the top of the column and a pressure of 1 atm. This will allow the acetone to vaporize and separate from the heavier impurities, such as phenol and other organic compounds.2. Water removal: Since acetone forms an azeotrope with water, a dehydration step is necessary to remove the remaining water content. This can be achieved using a liquid-liquid extraction process with a suitable dehydrating agent, such as anhydrous calcium chloride or molecular sieves. The extraction unit should be designed to provide sufficient contact time between the acetone-water mixture and the dehydrating agent to achieve the desired water removal.3. Secondary distillation: After the water removal step, the acetone mixture should be subjected to a secondary distillation process to further purify the acetone. This can be done using a packed distillation column or a wiped film evaporator. The operating conditions for this step should be set to maintain a temperature of around 56C at the top of the column and a pressure of 1 atm.4. Adsorption: To remove any remaining trace impurities, the acetone can be passed through an adsorption column packed with activated carbon or other suitable adsorbents. This will help to remove any remaining phenol, organic compounds, or other impurities that may still be present in the acetone.5. Filtration and final polishing: Finally, the purified acetone can be passed through a fine filter to remove any particulate matter or adsorbent particles that may have been carried over from the previous steps. This will ensure that the final product is at least 99% pure acetone.The equipment required for this purification process includes:1. Distillation columns primary and secondary with appropriate packing or trays2. Liquid-liquid extraction unit3. Dehydrating agent anhydrous calcium chloride or molecular sieves 4. Adsorption column with activated carbon or other suitable adsorbents5. Fine filter for final polishingBy following this proposed purification process and using the appropriate equipment and operating conditions, it should be possible to obtain at least 99% pure acetone from the crude acetone obtained from the industrial production of phenol.