I want to replace the filter press; which type is more suitable for liquid polyaluminum chloride?
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This post was last edited by share98 on 2011-3-21 at 20:15. Our company is currently using a 100-square-meter polypropylene chamber filter press, but we would like to replace it with a better one due to the following two main shortcomings: 1. Since the concentration of the polyaluminum chloride produced, as well as the size of the suspended particles, are not constant, there are times when the chamber filter press is unable to carry out the filtration process. 2. Cleaning the filter residue from box-type filter presses is very labor-intensive and time-consuming. The main issue at the moment is the first point: if it becomes impossible to carry out filtration, it will cause a lot of problems. All of our company’s customers require products that have been filtered, so we want to replace the current equipment with one that can ensure filtration. As for which type of filtration machine would be better, let’s discuss the production conditions first: for liquid polyaluminum chloride, the liquid form is required, not the solid residue; the residue content
The difficulty in removing the filter residue is due to problems with the filter cloth; considering using an imported one might help. Sometimes it is difficult to filter, which is related to the breathability of the filter cloth. The difficulty in filtering is also related to the size of the filtering boss. I’d like to discuss this in detail with you; you can call me at 13700898853 or contact me on QQ at 1142593705. Based on what you’ve said, I recommend choosing a filter press with a capacity of 250 square meters. Price: 138,000 yuan (including filter cloth, shipping cost, and taxes)
You might want to try a pressure drum filter, which features fully continuous and automatic discharge
It would be best to find a rubber-diaphragm box filter press, but they are basically no longer produced these days
The reasons for this could be as follows: 1. The filter cloth has been in use for too long, and small particles can easily clog the pores in the filter cloth, making filtration difficult. It is recommended to use a filter press equipped with an automatic filter cloth cleaning system, which uses high-pressure water or steam to clean the filter cloth, thereby enabling it to be regenerated and extending its service life. 2. It is recommended to use a variable-frequency feed pump; at the beginning of filtration, the filtration pressure should not exceed 2 bar, after which the feed pressure can be increased gradually until it reaches 6 bar, which may yield better results. 3. It is recommended to use filter plates with a relatively thin thickness, so as to form a denser filter cake during filtration and prevent the formation of \"sandwiches\".
I would like to ask if anyone who has experience in producing liquid polyaluminum chloride (food-grade) can recommend any filter presses. What is the current market price approximately? Thank you!
If you want to produce liquid polyaluminum chloride (food-grade), please contact me at QQ565354072
The pressure filtration of liquid polyaluminum chloride is not necessarily a problem with the filter press itself; it mainly lies in the operation and raw material formulation
I agree with the view from Floor 8; the difficulty in filtration during aluminum polymer production is generally caused by the reaction ratios and reaction control, while filter cloth and filter plates are secondary factors