CN210434481U

CN210434481U - Catalyst basket structure of ammonia synthesis tower

Info

Publication number: CN210434481U
Application number: CN201921067352.3U
Authority: CN
Inventors: 李清波; 李国中; 项旭
Original assignee: Henan Jindadi Chemical Industry Co Ltd
Current assignee: Henan Jindadi Chemical Industry Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-05-01
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to an ammonia converter catalyst basket structure, including the end cover, the catalysis cavity, return air inlet and heat exchanger, wherein the end cover, catalysis chamber interconnect and coaxial distribution, the end cover, the catalysis cavity constitutes airtight cavity structures jointly, the heat exchanger is located outside the catalysis cavity to communicate through honeycomb duct and a plurality of return air inlets, the return air inlet inlays in catalysis cavity internal surface, and encircle catalysis cavity equipartition, and the return air inlet axis intersects and is 15-45 contained angles with catalysis cavity axis, the end cover includes the lid, the guide plate, the screen cloth, the distributor. This novel one side can effectual improvement catalyst basket space utilization, improves reaction operating efficiency, and on the other hand can effectual improvement catalyst comprehensive utilization, overcomes traditional catalyst basket and can not participate in the reaction operation because of the catalyst subsides the partial catalyst in the catalyst basket that leads to, and influences catalyst basket work efficiency and product quality condition.

Description

Catalyst basket structure of ammonia synthesis tower

Technical Field

The utility model relates to a shower head structure belongs to the atomizing equipment of spraying technical field.

Background

The catalyst basket of the ammonia synthesis tower plays a crucial role in the operation efficiency and the product quality of the synthesis tower, but in practical use, the current catalyst basket is found to have a serious sedimentation phenomenon during the operation of a catalyst in the catalyst basket, so that in order to improve the reaction efficiency of the catalyst and overcome the sedimentation phenomenon, one or more air sealing layers are mainly arranged in the catalyst basket at present, although the reaction efficiency of the catalyst can be effectively improved by the method, a large number of dead corners exist in the catalyst basket, and further, the raw materials and the catalyst at the dead corners can not effectively react, so that the unreacted raw materials and the catalyst are easy to pollute the synthesized product while the reaction efficiency is influenced, the stability and the reliability of the product quality are seriously influenced, in addition, the space utilization rate in the current catalyst basket is low due to more dead corners, the available working space is very valuable to the synthesis tower equipment as long as the synthesis tower equipment is concerned, so that the existence of the dead corners causes serious waste of space resources and has great adverse effect on the working efficiency of the synthesis tower.

In view of the above problem, it is urgently required to develop a novel catalyst basket structure to meet the requirement of practical use.

SUMMERY OF THE UTILITY MODEL

To the not enough of existence on the prior art, the utility model provides an ammonia converter catalyst basket structure, this novel simple structure, it is nimble convenient to use, can effectual improvement catalyst basket space utilization on the one hand, improves reaction operating efficiency, and on the other hand can effectual improvement catalyst comprehensive utilization, overcomes traditional catalyst basket and can not participate in the reaction operation because of the catalyst subsides the inside partial catalyst of the catalyst basket that leads to, and influences catalyst basket work efficiency and product quality condition.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

a catalyst basket structure of ammonia synthesis tower is composed of end cover, catalytic cavity, air return ports and heat exchanger, which are coaxially arranged and connected together, and the heat exchanger is arranged outside the catalytic cavity and communicated with several air return ports via guide tube, and the air return ports are embedded in the internal surface of catalytic cavity and uniformly distributed around the catalytic cavity, and the axle of air return port is crossed with the axle of catalytic cavity and has an included angle of 15-45 deg.C, and is composed of cover body, guide plate, screen and distributor, which is a channel structure whose axle cross-section is Jiong-shaped, and has a feeding port on cover body, and is coaxially arranged with cover body and communicated with distributor via guide tube, and the distributor is connected with the lower surface of upper end surface of cover body and includes shunt tube and drainage tube, which are coaxially arranged with cover body and communicated with several drainage tubes, the axial line of the drainage tube is vertical to and intersected with the axial line of the shunt tube, the rear end face of the drainage tube is communicated with the shunt tube, the distance between the front end face and the side surface of the cover body is not more than 1/4 of the diameter of the cover body, the guide plates are of arc groove-shaped structures with the cross sections in the shape of 'Contraband' and are coaxially distributed with the cover body, the number of the guide plates is at least three, the guide plates are uniformly distributed on the lower surface of the upper end face of the cover body around the axial line of the cover body, each guide plate is respectively coated outside the front half section of at least 4 drainage tubes, the axial lines of the guide plates and the axial lines of the drainage tubes are distributed in the same plane range parallel to the lower end face of the cover body, at least one layer.

Further, the heat exchanger is connected with the outer surface of the catalytic cavity through a bearing keel, and is communicated with the air return inlet through an air return fan, and the air return fan is embedded in the bearing keel.

Furthermore, in the guide plates, the distance between two adjacent guide plates is not less than 1/10 of the perimeter of the cover body.

Furthermore, the lower end face of the guide plate is provided with at least one backflow port, and the axis of the backflow port is parallel to the axis of the cover body.

Furthermore, in the drainage tube, the front end face of the drainage tube positioned outside the guide plate is communicated with at least one spray head, the axis of the spray head and the axis of the cover body form an included angle of 0-45 degrees, and when the included angle is larger than 0 degree, the axis of the spray head is intersected with the axis of the cover body.

Furthermore, the end cover lower extreme establish the honeycomb duct, honeycomb duct and lid coaxial distribution, just honeycomb duct lateral surface offsets with the guide plate rear end face, and the lower terminal surface surpasss the lid lower terminal surface at least 5 millimeters.

This novel simple structure, it is nimble convenient to use, can effectual improvement catalyst basket space utilization on the one hand, improves reaction operating efficiency, and on the other hand can effectual improvement catalyst integrated utilization, overcomes traditional catalyst basket and can not participate in the reaction operation because of the catalyst subsides the inside partial catalyst of catalyst basket that leads to, and influences catalyst basket work efficiency and product quality condition.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

The ammonia converter catalyst basket structure shown in fig. 1 comprises an end cover 1, a catalytic cavity 2, air return ports 3 and a heat exchanger 4, wherein the end cover 1 and the catalytic cavity 2 are connected with each other and coaxially distributed, the end cover 1 and the catalytic cavity 2 jointly form a closed cavity structure, the heat exchanger 4 is positioned outside the catalytic cavity 2 and is communicated with a plurality of air return ports 3 through a flow guide pipe 5, the air return ports 3 are embedded in the inner surface of the catalytic cavity 2 and are uniformly distributed around the catalytic cavity 2, and the axes of the air return ports 3 and the axes of the catalytic cavity 2 are intersected and form an included angle of 15-45 degrees.

In this embodiment, the end cap 1 includes a cap body 101, a flow guide plate 102, a screen 103, and a distributor 104, wherein the cap body 101 is a groove-shaped structure whose axial section is "Jiong", the cap body 101 is provided with a feed inlet 105, the feed inlet 105 and the cap body 101 are coaxially distributed and are communicated with the distributor 104 through a flow guide tube 5, the distributor 104 is connected with the lower surface of the upper end surface of the cap body 101, and includes a flow distribution tube 1041 and a flow guide tube 1042, wherein the flow distribution tube 1041 and the cap body 101 are coaxially distributed and are communicated with each other, the axial line of the flow guide tube 1042 is perpendicular to and intersects with the axial line of the flow distribution tube 1041, the rear end surface of the flow distribution tube 1041 is communicated with each other, the distance between the front end surface and the side surface of the cap body 101 is not greater than 1/4 of the diameter of the cap body 101, the flow guide plate 102 is an arc groove-shaped structure whose, and each guide plate 102 is respectively coated outside the front half section of at least 4 drainage tubes 1042, the axes of the guide plates 102 and the axes of the drainage tubes 1042 are distributed in the same plane range which is parallel to the lower end face of the cover body 101, at least one layer of filter screen 103 is arranged on the front end face of the guide plate 102, the filter screen 103 and the axes of the drainage tubes 1042 form an included angle of 45-90 degrees, and the distance between the filter screen 103 and the side walls of the cover body 101 and the distance between the filter screen 103 and the front end face of the drainage tubes.

In this embodiment, heat exchanger 4 and catalysis cavity 2 surface between be connected through bearing fossil fragments 6, with 3 intercommunication through return air fan 7 between in return air inlet, just return air fan 7 inlays in bearing fossil fragments 6.

In this embodiment, in the diversion plates 102, the distance between two adjacent diversion plates 102 is not less than 1/10 on the circumference of the cover 101.

In this embodiment, the lower end surface of the flow guide plate 102 is provided with at least one backflow port 8, and the axis of the backflow port 8 is parallel to the axis of the cover body 101.

In this embodiment, in the drainage tube 1042, the front end surface of the drainage tube 1042 located outside the deflector 102 is communicated with at least one spray header 9, an included angle between an axis of the spray header 9 and an axis of the cover 101 is 0 ° to 45 °, and when the included angle is greater than 0 °, the axis of the spray header 9 intersects with the axis of the cover 101.

In this embodiment, the lower end of the end cover 1 is provided with a flow guide tube 5, the flow guide tube 5 and the cover body 1 are coaxially distributed, the outer side surface of the flow guide tube 5 abuts against the rear end surface of the flow guide plate 102, and the lower end surface exceeds the lower end surface of the cover body 101 by at least 5 mm.

This is novel in the concrete implementation, at first assembles this neotype end cover, catalysis cavity, return air inlet and heat exchanger of constitution, then with this novel installation location after the assembly in the synthetic tower to carry out corresponding pipeline and electrical equipment and connect, can accomplish this novel assembly.

In actual operation, firstly, the air in the catalytic cavity passes through a ventilator stroke circulation air path through the return air fan, and the temperature in the catalytic cavity is regulated through the heat exchanger, so that the condition that the catalytic cavity is intensified by the cold tube effect caused by directly regulating the temperature in the catalytic cavity is avoided, and the synthesis reaction efficiency and stability are improved; then the material is firstly conveyed into the shunt tubes through the charging opening, then the material is uniformly conveyed into each drainage tube through the shunt tubes, and is directly conveyed to the positions close to the end cover and the side surface of the catalytic cavity through the front end surface of the drainage tube, and then is conveyed into the end cover and the catalytic cavity and reacts with the catalyst in the catalytic cavity, so that the condition that dead corners are formed at the positions of the inner corners of the end cover and the catalytic cavity to be incapable of being fully utilized is effectively and the condition that the raw material or the catalyst at the positions of the dead corners cannot participate in the reaction to cause pollution to the reacted product is avoided.

In addition, when the material is carried in end cover, catalysis cavity, partly carry out the water conservancy diversion by force through the guide plate and carry with the low pressure state after being filtered by the filter screen, another part is then carried after direct high pressure atomization, through the difference of different pressure material flow characteristics, in the time of strip reaction efficiency, only one step elimination catalyst basket in the dead angle position.

Those skilled in the art should understand that the present invention is not limited by the above embodiments. The foregoing embodiments and description have been made only for the purpose of illustrating the principles of the invention. The present invention can be further modified and improved without departing from the spirit and scope of the present invention. Such changes and modifications are intended to be within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An ammonia converter catalyst basket structure, which is characterized in that: the ammonia synthesis tower catalyst basket structure comprises an end cover, a catalysis cavity, air return ports and a heat exchanger, wherein the end cover and the catalysis cavity are connected and coaxially distributed, the end cover and the catalysis cavity jointly form a closed cavity structure, the heat exchanger is positioned outside the catalysis cavity and is communicated with a plurality of air return ports through a guide pipe, the air return ports are embedded in the inner surface of the catalysis cavity and are uniformly distributed around the catalysis cavity, the axis of the air return ports is intersected with the axis of the catalysis cavity and forms an included angle of 15-45 degrees, the end cover comprises a cover body, a guide plate, a screen and a distributor, the cover body is of a groove structure with the axial section of Jiong, a feed port is arranged on the cover body, the feed port and the cover body are coaxially distributed and are communicated with the distributor through the guide pipe, the distributor is connected with the lower surface of the upper end face of the cover body and comprises a flow dividing pipe and a, and communicate with a plurality of drainage tubes each other, the drainage tube axis is perpendicular and crossing with the shunt tubes axis, and its rear end face communicates with the shunt tubes each other, and the interval is not more than 1/4 of lid diameter between preceding terminal surface and the lid side surface, the guide plate is the circular arc groove-shaped structure that the cross section is "Contraband" style of calligraphy and distributes with the lid is coaxial, and the guide plate is three at least, encircles the lower surface of lid axis equipartition at the lid up end, and each guide plate is equallyd divide and respectively coats outside 4 at least drainage tube first sections, and guide plate axis and drainage tube axis distribute in same and lid lower extreme plane scope that terminal surface parallel distribution, the guide plate front end face establishes at least one deck filter screen, the filter screen is 45-90 contained angles with the drainage tube axis to be all not less than 10 millimeters with between lid side.

2. The ammonia converter catalyst basket structure of claim 1, wherein: the heat exchanger is connected with the outer surface of the catalytic cavity through a bearing keel, is communicated with the air return inlet through an air return fan, and is embedded in the bearing keel.

3. The ammonia converter catalyst basket structure of claim 1, wherein: in the guide plates, the distance between two adjacent guide plates is not less than 1/10 of the perimeter of the cover body.

4. The ammonia converter catalyst basket structure of claim 1, wherein: the lower end face of the guide plate is provided with at least one backflow port, and the axis of the backflow port is parallel to the axis of the cover body.

5. The ammonia converter catalyst basket structure of claim 1, wherein: in the drainage tube, the front end face of the drainage tube positioned outside the guide plate is communicated with at least one spray head, the axis of the spray head and the axis of the cover body form an included angle of 0-45 degrees, and when the included angle is larger than 0 degree, the axis of the spray head is intersected with the axis of the cover body.

6. The ammonia converter catalyst basket structure of claim 1, wherein: the end cover lower extreme establish the honeycomb duct, honeycomb duct and lid coaxial distribution, just the honeycomb duct lateral surface offsets with the guide plate rear end face, lower terminal surface surpasss the lid lower terminal surface 5 millimeters at least.