The ash removal effect of spraying is poor – what should be done?

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I work in a quiet position; during each workshop maintenance session, I am always responsible for cleaning the spray nozzles in the packing tower, as they suffer from severe scaling and blockages. Within a few weeks after each drive, it gets clogged again; the spray mechanism is similar to a fish skeleton, with the spray holes being about as wide as the core of a pen. We use water (wastewater) to clean the dust from acetylene gas (produced from calcium carbide). My vague idea: In the long term, I plan to increase the nozzle size, but that would only prolong the time of blockage. Actually, I’m more interested in knowing if there are better spraying modes that offer high efficiency and even distribution, thereby resulting in better dust removal. Either methods for removing ash, or process modifications, and so on… Thank you very much. Could a Haiyou help analyze this?