BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view schematically showing the structure of a prior general shell-and-tube catalytic reactor or heat exchanger.
FIG. 2 is a cross-sectional view schematically showing the structure of a reactor or heat exchanger according to the present invention, in which a disc-type baffle plate having a given diameter is placed inside of a doughnut-type baffle plate in order to improve heat transfer efficiency.
FIG. 3 is a cross-sectional view taken along line X-X′ in FIG. 2, which shows the cross section of a reactor or heat exchanger according to an embodiment of the present invention, in which the disc-type baffle plate is placed inside of the doughnut-type baffle plate, and illustrates a reaction tube region, the size of a doughnut-type baffle plate and the size of a disc-type baffle plate placed inside of the doughnut-type baffle plate.
FIG. 4 is a graphic diagram showing the distribution of heat transfer coefficient in a reactor manufactured in each of Comparative Example 1 and Example 1.
FIG. 5 is a graphic diagram showing the internal temperature distribution of reaction tubes in a reactor manufactured in each of Comparative Example 1 and Example 1.