Patent GB-191023564-A (GB)
Title: Improvements in and relating to the Purifying and Heating of Feed Water for Steam Generators.
Inventor: HUELSMEYER CHRISTIAN
Filed: 1910-10-11
Granted: 1911-12-11
Abstract: 23,564. H³lsmeyer, C. Oct. 11. Feed-water, heating.-In purifying and heating feed-water for steam-generators by bringing it into direct contact with high-pressure steam, the steam is caused to act on the feed-water in such a manner that the feed-water is raised to at least 150‹ C. only at the place or places where precipitation of impurities is to be effected. Many forms of apparatus for carrying out the invention are described, which are of the. type comprising a large open receptacle, acting as a de-aerating space, and provided with spouts leading to trays through or over which the water passes successively. Fig. 1 shows an apparatus adapted to be placed inside a stationary boiler without restriction of space due to stay-bolts &c. The de-aerating chamber a is suspended from the boiler crown, and supports trays d of increasing size, subdivided by partitions into larger or smaller compartments which are perforated either at the sides or the bottom. The water flows in a zigzag path, entering the unperforated compartment of each tray first, and descends with the mud into a conical chamber f, which may or may not be provided with a run-off pipe leading to the bottom of the boiler near the blow-off cock. A partition may be arranged adjacent the blow-off cock to form a mud-collector. A blow-off pipe may, however, be directly connected to the mud chamber. In a modification, the chamber a is provided with horizontally elongated spouts, and the sides of the trays are bevelled to give the zigzag path. In another modification, the chamber a is located at the end of a pyramidal system of long troughs or trays arranged alternately in longitudinal and transverse rows, the trays in adjacent rows in both directions being arranged in staggered relation. This apparatus may be arranged inside the generator or in a separate vessel. Where the internal space of the boiler is restricted by smoke-tubes, steamcollecting pipes, &c., the apparatus may be constructed as follows: (1) the chamber a, in the form of a long trough, is disposed at the uppermost portion of the boiler, and the water flows thence over corrugated sheeting along the boiler shell, being admitted to the boiler water through openings near the bottom; (2) superposed rows of staggered trays are arranged between longitudinal chambers a mounted on transverse supports, the outer walls of the chambers conforming somewhat to the curve of the boiler shell; (3) as shown in Fig. 11, the chamber a is located at one side, the trays K are arranged in cascade formation, and the mudcollector N is located at the other side, and supported on an angle-iron; (4) as shown in Fig. 13, the chamber a is integral with a long receptacle P provided with partitions Q perforated at their upper edges. Instead of subdividing a long receptacle, a number of smaller receptacles may be arranged in series, and such series may be further arranged in superposed rows. Reference has been directed by the Comptroller to Specification 13,367/06.