Multiple effect evaporation, or MEE, involves structured sequencing of the evaporators, with the number of evaporators or effects commonly restricted to four, unless another specific design is required. The salient features are: • A multiple effect evaporator is an apparatus that efficiently uses the heat from steam to evaporate water. •

Multiple-effect evaporation is evaporation in multiple stages, whereby the vapors generated in one stage serve as heating ‘steam’ to the next stage. Thus, the first stage acts as a ‘steam generator’ for the second which acts as a condenser to the first and so on. The number of ‘effects’ is the number of stages thus arranged.

2020年1月1日 · The main advantage of multiple-effect evaporator systems is their energy economy, as the vapor generated in one effect can be used as the heating medium of another effect. Single-effect evaporation is simple but fails to utilize the steam effectively, while multiple effect evaporators evaporate more quantity of water per kilogram of steam ...

2024年1月1日 · Energy efficiency of multiple-effect evaporator could be increased by 70% with the integration of TVR (Sharan & Bandyopadhyay, 2016). The thermal performance ratio of the 12-effect multiple-effect evaporator system is 8 when operating in stand-alone mode, and increases to 16.7 when utilized in conjunction with TVR (Liu et al., 2022).

2022年6月1日 · The multiple-effect evaporator train is composed of four different unit operations: a) the evaporator itself, identified as EVAP i in Fig. 3; b) the condensate tank, Tk i, which extracts the condensate from the evaporation body and allows it to flash in the lower pressure steam; c) the mix/splitter, Sp i, that plays three roles, which are to ...

2018年9月1日 · The fermentor product is 95 mol% water and 5 mol% PDO (for simplicity, we neglect other heavier components). A continuous feed of 2000 kmol/h is to be concentrated to a liquid product with 51 mol% PDO in a multi-effect evaporator process. The limitation on the evaporator is the loss of PDO in the last stage.

2021年6月1日 · A multi-effect evaporator with any number of stages that is designed to produce the same final liquid product (207.8 kmol/h) from the same feed will have 229.9 m 2 of heat-transfer area in each stage when a constant-area design criterion is used. Of course the steam consumptions will be different.

2016年2月25日 · The main advantage of multiple-effect evaporator systems is their energy economy, as the vapor generated in one effect can be used as the heating medium of another effect [5]. The evaporation process is widely used in a variety of industrial sectors, notably the pulp and paper industry.

2017年10月15日 · Multiple-effect evaporator (MEE) is one of the devices commonly used in food processing, desalination, pulp and paper, etc. for increasing the concentration of the solution. In MEE the evaporation and cooling of various thermal stream takes place, making it an energy intensive process.

2009年2月1日 · That is possible because the equipment used for juice concentration, that is, the multiple effect evaporator (MEE), is divided into several stages, using the heating steam from back-pressure turbines (ST), only in the first effect, thus allowing other effects to take advantage of the thermal energy of VV generated in the operation itself.