CN2411848Y

CN2411848Y - Through ball catalyst

Info

Publication number: CN2411848Y
Application number: CN 99225199
Authority: CN
Inventors: 赵愉生; 王欣; 王志武
Original assignee: FUSHUN PETROCHEMICAL INST CHINA PETROCHEMICAL CORP; China Petrochemical Corp
Current assignee: FUSHUN PETROCHEMICAL INST CHINA PETROCHEMICAL CORP; China Petrochemical Corp
Priority date: 1999-09-29
Filing date: 1999-09-29
Publication date: 2000-12-27
Anticipated expiration: 2009-09-29

Abstract

The utility model relates to the shape of a catalyst granule, which is characterized in that one strip or more than one strip of grooves are arranged along the direction of meridian on the surface of the through ball catalyst granule. The grooves are in various shapes, and the depth and width of the grooves are smaller than half of the radius of the catalyst. The catalyst granule is simple and convenient in manufacture, the external surface of the catalyst is added, the average distance of spreading reactant from the external surface to the inner part of the catalyst is decreased, and the reaction efficiency is improved. Meanwhile, the utility model can contain more impurities, the service life of the catalyst can be prolonged, the tendency of coking can be reduced, and the utilization rate of the catalyst can be raised.

Description

A kind of logical bulbus cordis shape catalyst

The utility model relates to petroleum refining and the used catalyst of chemical field catalytic process, particularly relates to the grain shape of this type of catalyst.

Mostly be several shapes such as annular, sphere and abnormity at present in industrial catalyst for application profile, these shapes respectively have pluses and minuses.Wherein the advantage of ring catalyst and special-shaped catalyst is the bed voidage height, and shortcoming is the logistics skewness, is unfavorable for improving reaction efficiency.Spherical advantage is that rollability is good, loads evenly, closely knit, but that its shortcoming is a bed voidage is little, and in use resistance drop gathers way comparatively fast, is unfavorable for improving the utilization rate of catalyst.

The purpose of this utility model is exactly the shortcoming that exists at sphere, annular and special-shaped catalyst particle, the catalyst that a kind of external surface area is bigger, bed voidage is high, logistics is evenly distributed is provided, and this catalyst shortened reactant and diffused to the average distance of entity inside everywhere from outer surface, improved the service efficiency of catalyst.

The utility model is on the surface of logical bulbus cordis shape catalyst granules, offers one or more groove along warp direction.Groove can be different shape as triangle, square, rectangle, trapezoidal, wide or wide semicircle etc. not, the degree of depth of groove is less than 1/2nd of the catalyst radius, the width of groove is less than 1/2nd of the catalyst radius.The size of logical bulbus cordis shape catalyst granules of the present utility model can require to select according to course of reaction.

The carrier material of catalyst is heat-resisting inorganic oxide, can be artificial aluminium oxide that synthesizes and/or aluminium oxide, titanium oxide, amorphous aluminum silicide and the Si-Al zeolite etc. that contain other elements, also can be natural alumina and the various clay that contains other elements.

Further describe the technical solution of the utility model below in conjunction with accompanying drawing.

Figure A is the axial vertical view example that prolongs of the present utility model.

Figure B is a front view example of the present utility model.

Figure C be of the present utility model one see through axle cut open thing figure.

The utility model has the advantages that:

1, simple for production, the structure that changes over mould can be made.

2, increased the outer surface of catalyst, reduced reactant and diffused in the catalyst everywhere by outer surface The average distance of section has improved reaction efficiency; Simultaneously also can hold more impurity, prolong catalyst Life-span.

3, increase the voidage of catalyst, reduced the flow resistance of reaction logistics in beds, reduce the tendentiousness of coking, the quick rising that the retaining bed layer resistance falls has improved the utilization rate of catalyst.

Claims

1. a special-shaped catalyst particle is characterized in that offering one or more groove along warp direction on the surface of logical bulbus cordis shape catalyst granules.

2. according to the described catalyst granules of claim 1, wherein groove is an arbitrary shape.

3. according to the described catalyst granules of claim 1, wherein the degree of depth of groove and width are all less than 1/2nd of catalyst radius.

4. according to the described catalyst granules of claim 2, wherein trench cross section is shaped as triangle, square, rectangle, trapezoidal, wide or not wide semicircle.

5. according to the described catalyst granules of claim 1, wherein the carrier of this catalyst granules is heat-resisting inorganic oxide.

6. according to the described catalyst granules of claim 5, wherein the carrier material of this catalyst granules is artificial synthetic aluminium oxide and/or contains aluminium oxide, titanium oxide, amorphous aluminum silicide and the Si-Al zeolite of other elements or contain the natural alumina and the various clay of other elements.