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Even after the use of demulsifiers, the separation of tar from ammonia water remains ineffective

2018-06-04View Original

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A combination of dispersant and demulsifier was used in an attempt to improve the separation of tar from ammonia water and to reduce the oil content in the ammonia water. However, no improvement was observed after its use; the oil-water interface in the separation tank became thicker, the upper layer of ammonia water contained more oil, and its color varied between yellow and gray. The separation efficiency even declined. The water content in the tar remained below 4% at the outlet of the separation tank. Changing the manufacturer of the chemicals did not help either. I would appreciate any suggestions from those with more experience Also, now it’s impossible to stop adding the chemical; once addition stops, the tar-ammonia separation tank becomes chaotic and cannot separate into layers at all.
Reply #22018-06-04
It is recommended to first conduct tests in the laboratory with a small scale, to determine which combination offers the best separation results and cost-effectiveness. Once that is determined, it can then be used in the actual installation site; this approach is safer. Otherwise, the problems you mentioned will arise – it’s not possible to proceed without using it
Reply #32018-06-04
Even after using demulsifiers, the separation of tar from ammonia water remains ineffective; don’t use them – they’re completely useless. It is recommended to load the coal evenly, to the designed height, so that there will be no issue with water contamination.
Reply #42018-06-04
Even after using demulsifiers, the separation of tar from ammonia water remains ineffective; don’t use them – they’re completely useless. It is recommended to load the coal evenly, to the designed height, so that there will be no issue with water contamination.
Reply #52018-06-05
This post was last edited by sdwfsgyykai on 2018-7-17 at 14:07. If the oil content is not too high, a purely physical method can be tried for oil removal; no chemicals are required, and no secondary pollution will occur. If possible, let’s communicate with each other
Reply #62018-06-11
It’s not that the product isn’t good; it’s that the technical staff in some companies lack the necessary skills, and there is no technical support available. This product has a critical point, requiring adjustments in all aspects. Experienced manufacturers can solve the problems that trouble everyone else.
Reply #72018-06-17
Hello, we specialize in imported additives for the separation of tar and ammonia water. If you need them, feel free to contact us to conduct small-scale tests.
Reply #82018-09-27
Hello! Which company are you from? Could I have your contact information?
Reply #92018-10-24
Hello, there is no need to use them together. The properties of the separating agent determine the effectiveness of removing tar, thereby naturally reducing the moisture content of the tar. If necessary, on-site experiments can be conducted, mainly at the tar-ammonia water separation stage.
Reply #102021-09-23
Use a combination of dispersant and demulsifier, as recommended by the manufacturer. There are issues with the medication compatibility application.
Reply #112022-01-13
Add in moderation; don’t overdo it. It can be adjusted downward slightly

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