Patent ID: 8206588

Claim:
A condensate filtering device comprising: a main body of the condensate filtering device containing a first hollow fiber membrane module in which filtration of condensate and air scrubbing washing are repeated, the first hollow fiber membrane module containing hollow fiber membranes; a line for introducing the condensate directly to the main body; a line for introducing air for scrubbing into the main body; a unit for evaluating properties of the hollow fiber membranes in the first hollow fiber membrane module of said main body of the condensate filtering device, said unit being equipped with a column containing a second hollow fiber membrane module with the same kind of hollow fiber membranes as the module contained in the main body, said second hollow fiber membrane module configured such that a part of its hollow fiber membranes may be partially taken out for sampling to evaluate the properties; a line for introducing the condensate into the unit which is branched from the line introducing the condensate directly to the main body; a line for introducing air into the unit which is branched from the line introducing air into the main body; and a protective cylinder having pores and being detachably provided around the second hollow fiber membrane module inside the column.