Transfer Operations MTO

Using the vapor-liquid equilibrium (VLE) data for the ethanol-water system provided in the following table, generate a Txy diagram. What are the liquid and vapor mole fractions of water if the liquid mixttire is 30 mol % ethanol  

Given Henry s law constant and the partial pressure of H2S, determine the maximum mole fraction of H2S that can be dissolved in solution at the given conditions. Data are provided below. 

An important equilibrium phase relationship is that between liquid and vapor. Raoult s and Henry s laws theoretically describe liquid-vapor behavior and under certain conditions are applicable in practice. Raoult s law is sometimes useful for mixtures of components of similar structure. It states that the partial pressure of any component in the vapor is equal to the product of the vapor pressure of the pure component and the mole fraction of that component in the liquid, that is, 

This expression may be applied to all components. If the gas phase is ideal, 

the mole fraction of water vapor in a gas that is saturated, that is, in equilibrium contact with pure water (jc = 1.0), is given simply by the ratio of the vapor pressure of water at the system temperature divided by the system pressure. These equations find application in distillation, absorption, and stripping calculations. 

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MASS TRANSFER OPERATIONS (MTO) the slope of this line may be determined ... 

Isothermal temperature control in the fluid-bed reactor was easily maintained under all process conditions investigated. The temperature gradients in the catalyst bed did not exceed 5 C even at mean temperature gradients of 200 to 300 C between the catalyst bed and the heat transfer medium. The plant accumulated 17 months-on-strearn of MTG/MTO operation, including 5 months at MTO conditions. MTO operation started with sensitivity studies to determine the effects of temperature and pressure on selectivity. Deactivation periods to vary catalyst activity and to Drovide a comDarison with the 4 B/D Dilot Diant were Derformed... 

In the UOP/Hydro MTO process unit, the methanol and recycled DME come into contact with the catalyst in the reactor and are converted into light olefins. Residence times are very short and the reactor operates in a stable steady-state in the vapor phase at temperatures between 350 and 600 °C, and pressures between 0.1 and 0.3 MPa. In the process, the catalyst is deactivated by coke accumulation, and a part of catalyst is transferred to the fluidized bed regenerator in order to restore its activity. 

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