4.22 Consider the following process to separate a mixture of dimethylamine (DMA) and 1-propanol (P). The pressure in each flash drum is 1 atm. Heaters, coolers, and pumps are not shown. (A) What is the temperature in flash drum 2 ? (B) What is the temperature in flash drum 3 ? (C) Is this process viable? That is, can this process separate the input stream into two outputs with the compositions stated? Draw tie lines on the temperaturecomposition phase diagram to justify your conclusion. (D) If this process is not viable, fix it. You may add flash drums and/or redirect streams as needed to fix the process. If the process is viable, improve it. You may eliminate flash drums and/or redirect streams as needed to improve the process. Your new process must start with 50mol% DMA and produce two outputs: one with 98 mol\% DMA and one with 4mol% DMA. Temperature-composition phase diagram for dimethylamine (DMA) + 1-propanol (P) mixtures at 1atm. 4.22 Consider the following process to separate a mixture of dimethylamine (DMA) and 1-propanol (P). The pressure in each flash drum is 1 atm. Heaters, coolers, and pumps are not shown. (A) What is the temperature in flash drum 2 ? (B) What is the temperature in flash drum 3 ? (C) Is this process viable? That is, can this process separate the input stream into two outputs with the compositions stated? Draw tie lines on the temperaturecomposition phase diagram to justify your conclusion. (D) If this process is not viable, fix it. You may add flash drums and/or redirect streams as needed to fix the process. If the process is viable, improve it. You may eliminate flash drums and/or redirect streams as needed to improve the process. Your new process must start with 50mol% DMA and produce two outputs: one with 98 mol\% DMA and one with 4mol% DMA. Temperature-composition phase diagram for dimethylamine (DMA) + 1-propanol (P) mixtures at 1atm