How to determine the consumption of utility systems in the process package?
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I would like to ask everyone: when preparing a process package for a larger scale of plant based on the data and results from pilot tests, how is the amount of utility required for the equipment determined? Especially for chemical reactions in reaction vessels, how can the exact flow rates of steam, circulating water, etc. be determined to meet the heating and cooling requirements of the process? For those companies that develop processes in a scientific and standardized manner, what methods do they use to obtain these data? Thank you all first!
Determine the steam and circulating water consumption based on the heat transfer amount
These design institutes all have formulas for such data
It is primarily determined based on relevant standards and regulations, as well as the current situation and usage experience of users
Hello! Thank you very much for your reply! There is a question: how is the total heat of the reaction process converted into the heat transfer rate? At the beginning of the reaction, the concentration of the reactants is high, the reaction rate is fast, and heat is released rapidly ； After some time, the concentration decreases, the reaction rate slows down, and heat release is reduced as well ； How to consider the maximum heat release rate? Looking forward to your guidance; thank you in advance!
Hello! Thank you very much for your reply! There is a question: how is the total heat of the reaction process converted into the heat transfer rate? At the beginning of the reaction, the concentration of the reactants is high, the reaction rate is fast, and heat is released rapidly ； After some time, the concentration decreases, the reaction rate slows down, and heat release is reduced as well ； How to consider the maximum heat release rate? Also, if I want to calculate it myself, in which manual should I look for the relevant formulas? Looking forward to your guidance; thank you in advance!
Hello! Thank you very much for your reply! Can you be more specific? Can you recommend some books, manuals, standards, and other materials? There is a question: how is the total heat of the reaction process converted into the heat transfer rate? At the beginning of the reaction, the concentration of the reactants is high, the reaction rate is fast, and heat is released rapidly ； After some time, the concentration decreases, the reaction rate slows down, and heat release is reduced as well ； How to consider the maximum heat release rate? Looking forward to your guidance; thank you in advance!
In the process package development process, it is first necessary to determine the material balance and heat balance; once the heat balance is established, the consumption of utility services can be calculated.
Hello! Thank you for your reply! How are things like the heat generated in a chemical reaction process, as well as the rates of heat absorption and release, calculated?
The reaction heat is preferably determined through experiments, or by using simulation software with all the required parameters entered to carry out calculations; while these calculations are generally accurate, experiments are still needed for verification.
What specific device is it? Is it the reaction kettle?