The invention discloses jet deflection
evaporation-type
ammonia process desulphurization technology and a device for implementing the same. The technology comprises a technical proposal: using
ammonia as desulfurizing agent; preheating
flue gas discharged by the
ammonia to between 80 DEG C and 90 DEG C through a boiler; vaporizing the
flue gas into steam through an ammonia
evaporator so as to contact
flue gas flowing from bottom to top for realizing desulphurization; carrying out demisting through a jet deflection
demister, and changing the direction of demisted
flue gas so as to carry out adsorption desulphurization from top to bottom through a desulphurization ring; directly discharging the
flue gas after adsorption desulphurization; respectively washing the air distribution
bed and the
demister through an air distribution
bed wash
pipe and a
demister wash
pipe every 3 to 8 hours, so as to ensure cleanness and smoothness of an air distribution
bed and the demister during desulphurization. The device mainly relates to a jet deflection
evaporation-type ammonia process desulphurization
tower which consists of a base, a
tower body, the air distribution bed, the air distribution bed wash
pipe, the ammonia
evaporator, the demister, the demister wash pipe, the desulphurization ring, a
flue gas inlet and a flue gas outlet. The technology and the device not only have excellent desulphurization effect, but also have an exhaust temperature as high as 80 DEG C; therefore, flue gas discharged from the device has excellent diffusibility and less
smoke plume; especially importantly, because flue gas does not contain
ammonium bisulphite and
aerosol after adsorption desulphurization, the device can also prevent
erosion in a flue and a
chimney caused by wet flue gas;
wash water adopted by the invention can be recycled, thereby ensuring remarkable energy-saving effect; moreover, the device has the advantages of simple structure, low operation cost and convenient maintenance.