GB711554A - Improvements relating to regenerators for coke ovens and other industrial furnaces - Google Patents

Abstract

711,554. Regenerators for coke ovens &c. D IDIER-KOGAG-HINSELMANN, KOKSOPENBAU UND GASVERWERTUNG AKT.-GES. Aug. 14, 1952 [Aug. 14, 1951; Dec. 29, 1951; Feb. 2, 1952; Feb. 26, 1952], No. 20503/52. Class 64(1) In a regenerator for a coke oven or other industrial furnace, a bottom flue extending over the whole length of the regenerator is divided by longitudinal partitions 16-19 into separate longitudinal channels 20-24, each communicating with one cell or section 1-5 of the regenerator, and means are provided for separately regulating the flow of gas through each channel. Air or gas flowing into the regenerator passes through one set of regulating apertures by which the flow through each channel is controlled, and the waste gases discharged from the regenerator through the same or different flue channels pass through a second set of regulating apertures. In the form shown in Figs. 1 and 2, the bottom flue is divided by a vertical wall 9 into two flue chambers each divided into longitudinal channels. Each cell or section of the regenerator communicates with one channel in each flue chamber through a pasage in the wall 9. The regulating means comprise obstructing bricks or guide vanes in the mouths of the channels. Air or gas to be heated enters the regenerator from an inlet through the channels in one flue chamber, and t h e waste heating gases leave it through the channels in the other flue chamber. In a modified arrangement, the air or gas and the waste gases flow through the channels in both flue chambers. All the channels are connected through separate ducts such as 98, 99, 100, Fig. 12, to a common air or gas supply chamber 101 and a common waste gas exhaust chamber 105. The outlet from the latter is controlled by a flap 104. The outlets from the ducts to the chamber 105 may be similarly controlled. The longitudinal channels and the ducts are of different cross-sectional area. In a form in which the bottom flue is not divided by a vertical wall, two sets of regulating apertures are carried by two separate doors hinged on opposite sides of the mouth of the flue. One door is closed over the mouths of all the channels when the air or gas is flowing in, and the other in place of the first when waste gas is being discharged. Each door has two openings, adjustable by slides, for each channel. In a modification the mouth of the flue is divided by a central pillar into two parts each provided with two apertured doors. In both forms the doors are operated automatically by means which open and close the exhaust valve for the exhaust gases. In another form, Fig. 17, the difference between the rates of inflow and outflow through the channels is obtained by the association of a fixed apertured plate 107 with a vertically slidable plate 108 having two sets of apertures 130-139 which are adjustable by slides. The apertures of one set alternate with those of the other. When the apertures in one set are opposite the apertures in the plate 107, the apertures in the other set are closed by the plate. The plate 108 may be moved simultaneously with the exhaust damper 155 and air damper 153. Alternatively, the two sets of apertures may be provided in a rotatable damper, Fig. 20, comprising rings 168 supported from a hollow shaft 161 by radial arms 166. The rings are connected at 90 degrees intervals by vertical sealing strips which form the apertures. The sizes of the apertures in two adjacent sectors are controlled by plates 170 slidable in grooves in the rings.