The steam generated in the methanol synthesis drum exceeds the specified limits
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This post was last edited by qy576100527 on 2017-7-18 at 20:47. The content of the images below shows various parameters related to the analysis of the steam generated as a by-product in our plant’s synthesis drums. Our plant has two synthesis towers, each with its own set of synthesis drums; 41 and 44 are the sampling points for the steam produced as a by-product from these drums. Phosphates were added to the drum using a diaphragm pump, which resulted in excessive sodium ions in the by-product steam. Dear sea friends, please share your opinions to address the issues in production.
Can there be sodium ions in phosphates?
:Victory: I really don’t understand this process; those sodium ions must have some source, so we need to trace them back to their origin
Describe the problem in more detail – for example, is it a new unit or an existing one? For new units, consider structural design issues such as whether the demister is not performing well. For existing units that used to work well, check what has changed recently, such as whether the phosphate batch has been replaced or something similar
Theoretically, salt should not evaporate at all. Of course, in practice, some amount of mist may be carried along, resulting in the presence of sodium ions. Check which steps in your process might involve the carryover of mist; problems could arise in those areas. Additionally, how do you determine whether the demister is working properly? Also, have you used too much phosphate, or is the sodium content in this batch of chemicals already very high?
:lol:lol:lol
1. The levels of phosphate and sodium ions in the boiler water can indirectly indicate the concentration of sodium ions in the steam, which helps to determine whether the dosage of chemicals used is appropriate. 2. Check the opening degree of the continuous blowdown valve. 3. Verify the liquid level; it should generally be 10 cm above the continuous blowdown outlet, so as to facilitate the discharge of highly concentrated saline water
Is trisodium phosphate and sodium hydroxide injected into the steam drum together? The injection volume can be reduced.