A granulator containing double-tube reactors and its application in the production of diammonium phosphate
A tubular reactor, diammonium phosphate technology, applied in the direction of ammonium orthophosphate fertilizer, application, phosphate, etc., to achieve the effect of reducing unit cost, avoiding wear, and improving labor and equipment utilization.
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Embodiment 1
[0036] A granulator with double tubular reactors, the upper part of the granulator is provided with a girder, and a tubular reactor is respectively installed on the two pairs of sides of the granulator, that is, No. 1 tubular reactor and No. 2 tubular reactor In the first tubular reactor, the ammonia distributor is inserted into the material layer of the granulator through the "plow" steel parts welded on the girder, and the end of the first tubular reactor installed outside the granulator is equipped with a liquid Ammonia feed pipe; the No. 2 tubular reactor is welded on the girder "plow type" steel parts to insert the ammonia distributor into the material layer of the granulator, and the end of the No. 2 tubular reactor set outside the granulator is installed with The liquid ammonia delivery pipe; the washing liquid circulation tank is respectively connected to the upper part of the No. 1 tubular reactor and the No. 2 tubular reactor through the tubular reactor feed pump. The...
Embodiment 2
[0039] The granulator with double-tube reactor is applied to the production of diammonium phosphate. The specific production method is as follows:
[0040]The washing liquid from the washing liquid circulation tank (the washing liquid mainly contains 40% phosphorus pentoxide) is transported to the No. 1 tubular reactor and the No. 2 tubular reactor through the feeding pump respectively, and reacts with liquid ammonia to produce ammonium phosphate The slurry and the ammonium phosphate slurry are sprayed on the inner material curtain of the granulator through the No. 1 nozzle and the No. 2 nozzle respectively. The granulator performs granulation through stock transfer, and after drying, sieves to obtain 2-4mm particles, then cools and packs to obtain the finished product of diammonium phosphate.
[0041] Among them, the spray volume of No. 1 nozzle and No. 2 nozzle is controlled to 20m 3 / h, the internal control pressure of No. 1 tubular reactor is 380KPa, and the internal con...
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