How to distinguish between devices and units?
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Looking at the feasibility study report, there are two material balance tables: the first one is related to the unit, and the second one is related to the plant. But these two material balance sheets are exactly the same. What is the exact relationship between plants and units?
Actually, these are all man-made classifications; if we have to identify differences, I think a unit is simply a device or something like that
The plant is composed of several units; for example, an ammonia synthesis plant includes units for conversion, reforming, decarburization, compression, and synthesis
Reply to 3# sailan: Thank you for your advice!
Found a relatively complete summary. Difference between device, unit, facility, and part: Device: A combination of one or more interrelated process units. A device usually refers to a part that generates products and can form production capacity on its own. Unit: A unit within a plant, which is a combination of equipment, pipelines, and instruments that carry out a specific process step as part of the production workflow. To illustrate this issue with an example: a fertilizer plant that produces urea consists mainly of an ammonia synthesis unit and a urea production unit ； In an ammonia synthesis plant, it is further composed of units such as gas generation, desulfurization, shift reaction, decarburization, compression, and synthesis. Facilities: Generally, it refers to their functions, such as fire-fighting facilities, lightning and static electricity protection facilities, sewage treatment facilities, etc. Part: A portion of the whole; some individuals within the whole
The device is a product, but what about the manufacturing process? Do \"process\" and \"unit\" mean the same thing? I’m a newbie when it comes to processes, units, and devices – I’m quite clueless about these things