TH5251B - Heat exchanger - Google Patents

Abstract

A heat exchanger in a manner that is a container for exchange. Solid particle heat with gas For example For heating up raw materials It was initially combustion by using hot gas to feed the container. Which consists of A hollow cylindrical center (1) with a contact gas inlet (3), a conical base (2) with a solid outlet (5), and a downward gas outlet (4), section. Concave top (7, 7 ') facing the center. And with at least one entrance of solid substance (8) The downward gas exit (4) was formed axially. At the beginning it was the center tube in the side of the container. And shall have male tabs (6) with the height of the upper part, the distance of the solid inlet from the vertical axis of the exchanger. Change in heat And the angle at the entrance of the solids to the level, the height of the pipeline The center gas inlet (4) above the lower end of the center (1) of the container and the angle that the male bar (6) makes to the level is all determined. In order to provide optimum conditions, partly for the counter radial heat exchange between the solid substance and the gas, and part for the separation of the solid substance from the gas stream inside the container due to Axial downward velocity of gas With in the contact line

Claims (1)

1. A vessel-type heat exchanger, having a cylindrical central section (1), a tapering conical base (2), and an inverted top (7) facing the center, forms the upper region of the heat exchanger. A tangential gas inlet (3) is located at the wall of the cylindrical central section, and at least one axial gas outlet is initially facing downwards (4), which contributes to the formation of eddy currents within the vessel. A heat resistance barrier (6) is installed at the upper end of the gas outlet (4) and tilted at an angle between 40°C and 70°C to the horizontal plane. At least one solid inlet (8) is formed at the top of the vessel, and a solid outlet (5) is at the bottom of the vessel. The solid inlets and outlets are positioned so that the solid particles fed into the heat exchanger are subjected to centrifugal momentum, thus carrying away the solid material. While heat exchange occurs with the gas in the countercurrent heat exchanger, the gas flows centrally from the gas inlet (3) to the gas outlet (4), with the opening of the inlet pipe (8) at the top of the upper section (7) connected to the wall of this section. The inlet pipe is tilted in the same direction as the countercurrent gas flow in the container, and the beta angle with the horizontal plane is less than 90°. The optimal inlet position of the solid substance in the horizontal plane is at a distance g ranging from 0 < g < 1.5d from the vertical axis of the heat exchanger, where the chemical formula is the diameter of the gas outlet pipe and the conical base (2) of the chamber is shortened. The shortened conical base, along with the underside of the heat resistance strip (6), forms an annular channel (9) together with the tube (4), forming the lower region of the vessel, and the radius b of the central section (1) ranges from 1.5 d less than or equal to b less than or equal to 3.0 d. The distance a from the upper end of the gas outlet tube (4) to the top of the upper section (7) of the heat exchanger ranges from 2 d less than or equal to a less than or equal to 5d. The axially positioned gas outlet is a downward-pointing tube (4) that extends from the axial center position, initially at least its length inside the vessel, and then passes through the conical base (2) of the heat exchanger at a distance f within the range 0 less than or equal to f less than or equal to 2.0d inside the vessel section, the center of the cylinder (1) from the level of the lower edge of such section.