Reactor

A reactor comprising, in an upright disposed tubular reactor vessel:

• a packing region which is a region for housing a continuous packed bed of granular packing;
• and
• an outer passage and an inner passage disposed outside and inside the packing region, respectively, in a cross section perpendicular to the axial direction of the reactor vessel, each of the outer and inner passages allowing a fluid to flow therethrough in the axial direction,
• the reactor being configured so that the fluid is able to pass between the packing region and the outer passage and the fluid is able to pass between the packing region and the inner passage, wherein
• the reactor further comprises at least one of the partition structures from among:
• an outer partition structure comprising:
• an outer partition plate which is a partition plate partitioning the packing region in the axial direction with a gap through which the granular packing is able to pass between an inner border of the packing region and said outer partition plate;
• and a blocking section for preventing the fluid from flowing through the outer passage in the axial direction;
• and
• an inner partition structure comprising:
• an inner partition plate which is a partition plate partitioning the packing region in the axial direction with a gap through which the granular packing is able to pass between an outer border of the packing region and said inner partition plate;
• and a blocking section for preventing the fluid from flowing through the inner passage in the axial direction,
• wherein in said at least one of the partition structures, the partition plate has an upward inclination toward a side having the gap.