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Ammonia steam waste heat utilization device for ammonia distillation

An ammonia vapor and waste heat technology, applied in ammonia compounds, evaporation separation crystallization, inorganic chemistry, etc., can solve problems such as different process principles, and achieve the effects of improving environmental noise, improving the rate of high-quality products, and reducing steam consumption.

Pending Publication Date: 2021-06-18
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention is the recovery and utilization of the low-temperature waste heat of the evaporation steam at the top of the ammonium sulfate crystallizer, while the present invention is the recovery and utilization of the waste heat of the ammonia vapor from ammonia distillation. end cold problem

Method used

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  • Ammonia steam waste heat utilization device for ammonia distillation

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Embodiment 1

[0019] Embodiment 1: see figure 1 , a waste heat utilization device for steaming ammonia, the device includes an ammonium sulfate mother liquid heat exchanger 1, an ammonia condensate tank 2, and an ammonia condensate pump 3, and the ammonium sulfate mother liquid heat exchanger 1 and an ammonia condensate pump 3 Ammonia condensate tank 2 is provided and connected through pipelines. The ammonium sulfate mother liquor heat exchanger is provided with ammonia vapor inlet, ammonia vapor outlet, mother liquor inlet and mother liquor outlet, and a regulating valve is arranged on the mother liquor inlet pipeline. Control the flow rate of the mother liquor entering the heat exchanger, the ammonia vapor inlet pipeline is provided with a regulating valve, and the opening of the regulating valve is automatically adjusted according to the temperature of the mother liquor in the mother liquor outlet pipeline, and the ammonia condensate tank 2 is provided with an ammonia water inlet, an ammo...

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Abstract

The invention relates to an ammonia steam waste heat utilization device for ammonia distillation, which comprises an ammonium sulfate mother liquor heat exchanger, an ammonia condensate tank and an ammonia condensate pump, the ammonium sulfate mother liquor heat exchanger and the ammonia condensate pump are provided with the ammonia condensate tank, and the ammonia condensate tank is connected with the ammonium sulfate mother liquor heat exchanger and the ammonia condensate pump through a pipeline. The ammonium sulfate mother liquor heat exchanger is provided with an ammonia steam inlet, an ammonia steam outlet, a mother liquor inlet and a mother liquor outlet, an adjusting valve is arranged on a mother liquor inlet pipeline, the flow of mother liquor entering the heat exchanger is controlled through the opening degree of the adjusting valve, an adjusting valve is arranged on an ammonia steam inlet pipeline, and the opening degree of the adjusting valve is automatically adjusted according to the temperature of mother liquor in a mother liquor outlet pipeline.

Description

technical field [0001] The invention relates to a utilization device, in particular to an ammonia steam waste heat utilization device, which belongs to the technical field of gas refining in coking technology. Background technique [0002] The deammonization of coke oven gas in Meishan Iron and Steel Plant adopts the pickling tower process. The coke oven gas and the ammonia vapor produced by distilling ammonia enter the bottom of the pickling tower together, and after reverse contact with the mother liquor spraying in the lower section, they pass through the middle part of the pickling tower. The distributor enters the upper part of the pickling tower and contacts the spray mother liquor in the upper stage to remove ammonia, and the gas enters the cyclone separation acid remover to remove the entrained acid mist and then enters the final cooling system of the gas. Sulfuric acid is continuously added to the mother liquor circulation tank, and the normal acidity is controlled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/242B01D9/02
CPCC01C1/242B01D9/0031Y02P20/129
Inventor 王则中陶小东严涵杨小春罗红妍
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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