Method for recovering and using machine sealing water during monoammonium phosphate production

A monoammonium phosphate and water recovery technology, applied in the direction of phosphate, phosphorus oxyacid, etc., can solve the problems of increasing sewage treatment volume, increasing sewage treatment cost, waste of process water, etc., to reduce sewage treatment cost and reduce sewage treatment The effect of small amount and input cost

Inactive Publication Date: 2012-06-13
ANHUI LIUGUO CHEM CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Machine seal water cooling water is all made of process water, and the machine seal water after cooling the machine seal is directly discharged. For example, the annual output of 120kt monoammonium phosphate production line discharges as much as 30,000m of process water as mechanical seal water. 3 The above not only causes a large waste of process water, but also increases the amount of subsequent sewage treatment and increases the cost of sewage treatment

Method used

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  • Method for recovering and using machine sealing water during monoammonium phosphate production
  • Method for recovering and using machine sealing water during monoammonium phosphate production
  • Method for recovering and using machine sealing water during monoammonium phosphate production

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Embodiment Construction

[0012] Such as figure 1 As shown, the present invention includes a circulating water tank 1, a circulating pump 2, a water supply main pipe 4 and a water return main pipe 5. The circulating water tank 1 is transported by the circulating water tank 1 to the water supply main pipe 4 by the circulating pump 2, and the mechanical seals discharged by each pump The water is collected through the return water main pipe 5 and then flows back into the circulating water tank 1 through the pipeline 6 .

[0013] Mechanical seals of dilute acid delivery pump 9, reaction circulation pump 10, second-effect circulation pump 11, first-effect circulation pump 12, exhaust gas scrubbing pump 14, washing displacement pump 15, second-effect condensate water circulation pump 16 and first-effect condensate water delivery pump 17 The water inlet and outlet pipes communicate with the water supply main pipe 4 and the return water main pipe 5 respectively.

[0014] One end of the circulating water reple...

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Abstract

The invention discloses a method for recovering and using machine sealing water during the monoammonium phosphate production, which comprises a cycle water tank and a bench of circulating pump used for collecting and supplying machine sealing water; the machine sealing water discharged by one or more pumps from a dilute acid transfer pump, a reaction circulating pump, a double-effect circulating pump, a first-effect circulating pump, a tail gas washing pump, a washing displacement pump, a double-effect condensed water circulating pump and a first-effect condensed water transfer pump; water in the cycle water tank is taken as machine sealing water and returned by the circulating pump to the above pumps, the investment is small, a lot of process water can be saved, processing amount of sewage can be also minimized and the production cost can be reduced.

Description

technical field [0001] The invention relates to a method for recycling mechanical seal water of pumps and fans in the production of monoammonium phosphate. Background technique [0002] A variety of pumps and fans are used in the production of monoammonium phosphate by the slurry concentration method. Many pumps and fans need to be cooled by mechanically sealed water, such as dilute acid delivery pumps, reaction circulation pumps, two-effect circulation pumps, and one-effect circulation. Pumps, exhaust gas scrubbing pumps, scrubbing displacement pumps, circulating water pumps, condensed water delivery pumps, triplex high pressure oil cooling pumps for slurry delivery, triplex high pressure pumps for slurry delivery, drying blowers and hot air blowers. Machine seal water cooling water is all made of process water, and the machine seal water after cooling the machine seal is directly discharged. For example, the annual output of 120kt monoammonium phosphate production line dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/28
Inventor 卢康许进冲张爱笑金岭许昕
Owner ANHUI LIUGUO CHEM CO LTD
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