An ammonia solution delivery device

Abstract

The invention discloses an ammonia solution conveying device which comprises a storage tank of ammonia to be diluted and an ammonia solution diluting device. The storage tank of ammonia to be diluted is communicated with a first ammonia solution liquid inlet header pipe, the first ammonia solution liquid inlet header pipe is communicated with a first ammonia solution liquid inlet branch pipe, the first ammonia solution liquid inlet branch pipe is communicated with a second ammonia liquid inlet header pipe, and the second ammonia solution liquid inlet header pipe is communicated with the ammonia solution diluting device. A first pipeline valve, a first filter, a first frequency conversion multistage centrifugal pump and a second pipeline valve are sequentially arranged on the first ammonia solution liquid inlet branch pipe in the liquid inlet direction of the ammonia solution, the first ammonia liquid inlet branch pipe is communicated with a first flushing water tank through a first flushing water pipeline, and a first control valve is arranged on the first flushing water pipeline; a pipeline temperature monitoring instrument, a pipeline pressure monitoring instrument and a flow meter are sequentially arranged on the second ammonia liquid inlet header pipe in the liquid inlet direction of the ammonia solution. The ammonia solution conveying device has the advantages of being small in size, small in occupied area and capable of controlling the output flow and output pressure of the ammonia solution.

Description

technical field [0001] The invention relates to an ammonia solution conveying device for flue gas denitrification of a coal-fired boiler. Background technique [0002] Ammonia is a commonly used catalytic reducing agent in boiler flue gas denitrification. At present, enterprises generally obtain the ammonia water required for boiler flue gas denitrification by directly purchasing ready-made ammonia water or by pyrolyzing solid urea into ammonia water. The concentration of the ammonia solution obtained by these two methods is generally around 20%. Among them, the ammonia solution with a concentration of about 20% needs to be transported to the ammonia solution dilution device through the ammonia solution delivery device for further dilution, so that the solution concentration of the ammonia solution meets the production requirements. In the denitrification system, the ammonia solution dilution device is generally located at the height of the boiler. The ammonia water deliver...

AI Technical Summary

Problems solved by technology

In the denitrification system, the ammonia solution dilution device is generally located at the height of the boiler. The ammonia solution delivery device currently used not only cannot control the output flow and output pressure of the ammonia solution, but also has a large volume, a large floor area, and low work efficiency.

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