Packing for reaction tube, reaction tube, and reaction method using same
AssigneeNippon Shokubai Co., Ltd.
InventorYuuji Shimasaki
Life of this patent
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Abstract
In a fixed-bed flow reaction using a multitubular heat exchange type reactor, an object of the present invention is to provide a novel packing for a reaction tube, which can control the reaction ratio in the vicinity of the reaction tube inlet, reduce the load unevenly placed on the catalyst in the reaction region, and distribute the load on the entire catalyst layer, a heat exchange type reactor, and a reaction method using the reaction tube. The packing for a reaction tube of the present invention is characterized in that the volume is continuously or step-by-step decreased from one end part or midway toward the other end part.
Claims12
A packing for a reaction tube,
- wherein the packing is to be placed near a reaction tube inlet side, and the packing together with a catalyst is to fill the reaction tube,
- wherein
- (i) a volume of the packing is continuously decreased from one end part at a side where a raw material fluid is introduced or midway toward another end part and the packing comprises an opening part to allow passage of fluids, or
- (ii) a volume of the packing is step-by-step decreased from one end part at a side where a raw material fluid is introduced or midway toward another end part and the packing comprises an opening part to allow passage of fluids, the opening part being on a boundary part between steps, and
- wherein a ratio of the opening part decreases from the one end part with a large volume to the other end part with a small volume.
A reaction tube comprising a structure therein,
- wherein
- (i) a volume of the structure is continuously decreased from one end part in an inlet side of the reaction tube into which a raw material fluid is introduced or midway toward another end part in an outlet side of the reaction tube and the structure comprises an opening part to allow passage of fluids, or
- (ii) a volume of the structure is step-by-step decreased from one end part in an inlet side of the reaction tube into which a raw material fluid is introduced or midway toward another end part in an outlet side of the reaction tube and the structure comprises an opening part to allow the passage of fluids, the opening part being on a boundary part between steps,
- wherein the structure is near the inlet side of the reaction tube,
- wherein a catalyst is filled between the structure and the reaction tube, and
- wherein a ratio of the opening part decreases from the one end part of the structure with a large volume to the other end part of the structure with a small volume.
Dependencies are inferred from the claim text.