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Double-effect evaporation final-effect vapour system

A double-effect evaporation and flash chamber technology, applied in the field of ammonium phosphate production technology systems, can solve the problems of water vapor waste, kinetic energy consumption, large sewage volume, etc., and achieve the effect of saving water resources and coal resources, and simplifying equipment

Inactive Publication Date: 2015-09-09
江苏瑞和化肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation of this part of environmental protection facilities not only consumes kinetic energy, but also causes waste of available energy in water vapor at around 85°C. Cooling with cooling towers will cause environmental pollution such as water vapor flying, and repeated cycles will eventually be discharged, and the amount of sewage is large. The system cannot digest and absorb

Method used

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  • Double-effect evaporation final-effect vapour system

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with drawings and embodiments.

[0019] figure 1 As shown, a double-effect evaporation final-effect steam system includes the I-effect slurry flash chamber 1, the I-effect slurry heater 2, the I-effect slurry circulation pump 3, the I-effect condensate collection tank 4, and the final effect material Slurry flash chamber 5, final effect slurry heater 6, final effect slurry circulation pump 7, final effect condensate collection tank 8, final effect demister 9, steam compressor 10, compressed steam regulating valve 11 and fresh steam Refill valve 12. The upper part of the final effect slurry flash chamber 5 is externally connected with the feed of dilute ammonium phosphate slurry, and the bottom of the final effect slurry flash chamber 5 is connected to the final effect slurry heater 6 in two ways through the final effect slurry circulation pump 7 The lower part of the process and the upper part of the...

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Abstract

The invention relates to a double-effect evaporation final-effect vapour system. According to the double-effect evaporation final-effect vapour system, a discharge pipe arranged on the lower part of a I-effect slurry flash chamber is communicated with a feed inlet of a I-effect slurry circulating pump; a vapour outlet pipe arranged on the top part of the I-effect slurry flash chamber is communicated with a vapour inlet of a final-effect slurry heater; a feed outlet of the I-effect slurry circulating pump is communicated with a feed inlet arranged on the lower part of a I-effect slurry heater; a discharge pipe arranged on the upper part of the I-effect slurry heater is communicated with a feed inlet of the I-effect slurry flash chamber; a liquor condensate pipe of the I-effect slurry heater is communicated with a I-effect liquor condensate collecting tank; a discharge pipe arranged on the lower part of a final-effect slurry flash chamber is communicated with a feed inlet of a final-effect slurry circulating pump; a feed outlet of the final-effect slurry circulating pump is communicated with a feed inlet arranged on the lower part of the final-effect slurry heater; a discharge pipe arranged on the upper part of the final-effect slurry heater is communicated with a feed inlet of the final-effect slurry flash chamber; and a liquor condensate pipe of the final-effect slurry heater is communicated with a final-effect liquor condensate collecting tank. Process flow is simple; automatic control is adopted; thermal energy of final-effect discharged vapour is used effectively; energy waste is reduced; no polluted water is generated; environmental pollution is avoided; production cost is reduced; and productivity is increased.

Description

technical field [0001] The invention relates to an ammonium phosphate-based production technology system, specifically a double-effect evaporation end-effect steam system. Background technique [0002] Evaporation is a unit operation that uses heating to heat a solution containing a non-volatile solute to a boiling state, so that part of the solvent is vaporized and removed, thereby increasing the concentration of the solute in the solvent. Double-effect evaporation is to carry out evaporation operation in two sets of evaporation units. The first set of evaporation unit uses new steam to pass into the shell side of the I-effect slurry heater to heat the slurry in the tube side, and from the I-effect slurry flash The secondary steam evaporated from the steam chamber enters the shell side of the final effect slurry heater of the second set of evaporation unit to heat the material in the tube side, that is, the secondary steam evaporated from the first set of evaporation unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/26
Inventor 沙德宏戴宇刘新生凡震山蔡新功
Owner 江苏瑞和化肥有限公司
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