Vaporizer for generating developer gas, containing ammonia gas,

Details Vaporizer for generating developer gas, containing ammonia gas, Vaporizer for generating developer gas, containing ammonia gas,

1978-01-26

1979-10-30

Hix, L. T.

Concentrating evaporators

Preliminary heaters and heat economizers

159 13A, G03D 700

Patent

active

041726529

ABSTRACT:
The invention relates to a vaporizer for generating developer gas, containing ammonia, from aqueous ammonia for developing diazo copying material, comprising a rectifying column with a transfer section, a substantially closed column head with a cover plate and a base plate, a first connecting branch for taking off the developer gas and a second connecting branch for feeding in aqueous ammonia opening into the column head, and a heated, steam-generating sump vessel at the foot of the transfer section, which includes a weir for liquids, which is located in the column head between the cover plate and the base plate below the connecting branches but above the transfer section, extends substantially over the entire cross-sectional area and has at least one passage orifice for liquid and at least one passage orifice for vapor.

REFERENCES:
patent: 3849232 (1974-11-01), Kessler et al.
patent: 4003069 (1977-01-01), Hilgers
patent: 4062031 (1977-12-01), Schroter

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