Comprehensive utilization system for phosphoric acid and phosphate wastewater
A phosphate and phosphoric acid technology, applied in the field of phosphorus chemical industry, can solve the problems of water hypoxia, odor, threat to fish survival, etc., achieve the effect of reducing efflux and increasing phosphorus yield
Active Publication Date: 2017-12-29
HUBEI XIANGYUN GROUP CHEM
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Problems solved by technology
When phosphate enters the water, it will make the water body "eutrophic", which will make bacteria, algae and other habitats have to readjust to adapt to the new environment, and in severe cases, the water body will be hypoxic due to the excessive reproduction of lower organisms , smelly, thus threatening the survival of fish
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0047] see figure 1, the conventional phosphorus chemical system includes refining system, phosphoric acid production system, monoammonium phosphate production system (large output, including industrial ammonium and powdered ammonium), diammonium phosphate production system and phosphogypsum treatment system, etc. (can also include Fluorosilicate production system, potassium phosphate production system, etc.), the refining system provides phosphate rock slurry for the phosphoric acid production system, and the phosphoric acid production system uses phosphate rock pulp as raw material to produce phosphoric acid by wet process and provides monoammonium phosphate production system and The diammonium phosphate production system provides phosphoric acid, and the phosph...
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The invention discloses a comprehensive utilization system for phosphoric acid and phosphate wastewater, and belongs to the technical field of the phosphorus chemical industry. The comprehensive utilization system comprises a mechanical seal water recycling slot, a condensed water treatment device, an II-effect condensed water treatment device, a pulping water supply device and a process water treatment device. The system comprehensively utilizes wastewater generated by a pulping system, a phosphoric acid production system, a monoammonium phosphate production system, a diammonium phosphate production system and a phosphorus gypsum treatment system, takes mechanical seal water which is relatively good in water quality and is moderate in water temperature as a circulating water source of a vacuum cooling device, a cooling water source of a cooling and crystallizing device and the like; moreover, the heated condensed water and process water with relatively good water quality separately can be used as pulping water and desalination raw material water; and process water with relatively poor water quality and the like are treated by a conventional water treatment system. The system can simultaneously utilize wastewater and energy of wastewater, reduces excretion and slightly increases the phosphor recovery rate.
Description
technical field [0001] The invention belongs to the technical field of phosphorus chemical industry, and in particular relates to a comprehensive utilization system of phosphoric acid and phosphate waste water, in particular to a water-saving system which mainly utilizes machine-sealed water and supplies water for vacuum cooling devices, desalinated water production devices, and pulping systems. System, which can simultaneously utilize waste water and waste water energy, reduce efflux and slightly increase phosphorus yield. Background technique [0002] Phosphoric acid (H 3 PO 4 ) is an important inorganic acid, medium-strong acid, and an important intermediate product in the production of chemical fertilizers. It is mainly used in the production of chemical fertilizers, industrial phosphates, feed-grade phosphates, pharmaceutical phosphates, food phosphoric acid and electronic-grade phosphoric acid. . [0003] Phosphoric acid and phosphate production process will produce...
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Login to View More IPC IPC(8): C02F9/10C02F103/34
CPCC02F1/001C02F1/06C02F1/66C02F9/00C02F2001/007C02F2103/34
Inventor 程来斌张少勇李小洪查炎华陈新华干璐石西咏
Owner HUBEI XIANGYUN GROUP CHEM