Discussion on reducing steam consumption in phosphate production and concentration
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In the production process of ammonium phosphate, steam consumption is primarily concentrated in the phosphoric acid concentration step. Reducing steam consumption allows companies to lower their coal usage for boiler operations, decrease the production costs of ammonium phosphate, and thereby enhance their competitiveness. Besides using a multi-effect concentration process, which reduces steam consumption compared to single-effect concentration, are there any other good methods to reduce it? Can it be achieved through operational control, or by adding heat exchange equipment (utilizing waste heat, etc.), or through other process adjustments? It’s better to first briefly explain what type of process it is before answering; for example, what kind of process is used for phosphoric acid? What is the concentration process? This makes it understandable.
I have patented technology in this area, and I can provide it if your company needs it.
OP, how effective is the current use of polyphosphate concentration? Could you give an introduction?
Energy conservation and consumption reduction – an eternal theme. Let’s all work hard and communicate more!
I wonder if the method of producing phosphamide using concentrated phosphoric acid has lower costs? Is it the cost of slurry concentration that is low?
There is a lot of information available on this topic, but concentration technology is used in the production of phosphoric ammonium fertilizer alongside wet-process phosphoric acid, with the Praion technology being employed in the vast majority of cases.
The R-P concentration process relies solely on large amounts of condensate water to create a vacuum; the vacuum system consists of a unique combination of a condenser, a high-head atmospheric leg, and a liquid seal tank. The atmospheric leg serves both as a conduit for the condensate water and as a means to collect non-condensable gases. This system does not require any additional vacuum equipment.
The existing multi-effect concentration process is quite good; the only waste heat that isn’t utilized is the circulating water generated by condensation. Some systems use this water to evaporate liquid ammonia, which requires a larger area of heat exchangers. The condensate water from the heater is generally reused.