Help needed regarding the BGL gasifier
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I would like to ask if there is a BGL gasifier that doesn’t use water-coal slurry? Are there black water sedimentation tanks and gray water recycling systems? If you know, please give some advice. Thank you!
The BGL gasifier is a liquid slag-discharging moving-bed gasifier; therefore, this technology uses coal in particle form, and water-coal slurry cannot be used.
Without coal water slurry, there should still be black water, right?
Since it is liquid slag discharge, there is wastewater.
BGL is a fixed-bed gasification technology that uses coal particles of 5–50 mm as raw material; it operates through two different feeding methods compared to coal water slurry feeding. However, it also belongs to the category of liquid slag discharge, featuring quenched black water and recycled ash water.
Since there is recirculation of quenched black water and gray water, is it still necessary to add flocculants and dispersants during operation?
Please go online and look up information carefully; the wastewater from BGL isn’t called \"black water\", and it’s easy to treat. The color of this wastewater is nearly transparent, with fine solid particles suspended in it. The COD in the water can reach <100, with almost no ammonia nitrogen. No chemicals need to be added during operation either.