. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . es to condense the aniline volatilised in the course ofthe process. The temperature should not exceed 1900 to 2000 C. Theoperation lasts 8 to 10 hours. When the transformation is complete, about 850litress of a mixture of aniline and water will have been condensed and col-lectetd, which, if separated by the addition of common salt, yield 440 kilos, ofanilime and 420 of water. When 800 litres of the mixture have passed over,the ffire is wi
. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . es to condense the aniline volatilised in the course ofthe process. The temperature should not exceed 1900 to 2000 C. Theoperation lasts 8 to 10 hours. When the transformation is complete, about 850litress of a mixture of aniline and water will have been condensed and col-lectetd, which, if separated by the addition of common salt, yield 440 kilos, ofanilime and 420 of water. When 800 litres of the mixture have passed over,the ffire is withdrawn, as the apparatus will still retain heat enough for thetermiination of the process and for completing the volatilisation of the freeanilime. During this time the agitator must be kept in constant is now allowed to enter by the descending tube, and sweeps awaymechianically the raw aniline yet remaining in the still. By degrees boilingwaterr is now introduced, whilst heat is again applied to the apparatus. Whenthe imass has become a homogeneous liquid, which is effected in about an N 2 I I Hi 180 DYEING AND CALICO 1. Elevation of complete apparatus. 2. of retort. b b. Head of retort. C. Axle of agitator, made hollow so as toconduct steam to the bottom of the apparatus. c. Entrance for steam. J. Man-hole, g g. Openings for taking out the colour. h h. Cavities in which hot aircirculates, and which can be opened if it is required to cool the apparatus. Fig. 16. ~W
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectdyesanddyeing, bookye
