For Example 23.11, Part (b), rework the problem for the case when the stream leaving the first stage of the ejector is condensed using cooling water (in at 30°C and out at 40°C) with a 5°C approach (leaves the condenser at 45°C). What is the reduction in steam flow to the second stage of the condenser?

You will have to set this problem up and solve it using a process simulator; you should use ideal gas and latent heat enthalpy options.

Example 23.11

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Design a steam ejector system for the acrylic acid distillation tower shown in Figure 23.14 and discussed in Example 23.9. Steam is available at 180°C and 1000 kPa, and the air leaking into the system must be delivered to the battery limit at a pressure of 120 kPa. For this system, determine the flow of steam needed to educt the air flow determined from Example 23.9. 1. Using a single-stage ejector 2. Using a two-stage, noncondensing ejector