An inner and outer receiver for a synthetic ammonia column internals reactor

Abstract

The utility model discloses a kind of inner and outer receivers of synthetic ammonia tower inner part reactor, it includes cylindrical inner receiver and outer receiver, outer receiver and inner receiver are opened long hole structure along radial direction, long hole structure outer aperture is big, inner aperture is small, process reaction gas enters the cavity containing catalyst from outer receiver along the radial long hole structure, completes synthetic reaction on catalyst surface, effectively distance of process gas entering the cavity containing catalyst is shortened from space, process gas and catalyst contact and complete reaction are accelerated, simultaneously, inner receiver is along the structure that inner aperture is small and outer aperture is big, so that catalyst does not overflow from inside to outside through long hole, and the contact area of inner receiver and heat exchange cavity is increased, and heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment manufacturing, specifically to an internal and external receiver for a reactor in a synthetic ammonia tower. Background Technology

[0002] Chemical reactions occurring inside the synthesis tower, such as the Haber process for ammonia synthesis, are typically exothermic processes. The synthesis tower equipment generally includes a catalyst reaction chamber and a heat exchange chamber. The reaction chamber is usually surrounded by an inner receiver and an outer receiver. The catalyst is generally granular. Traditional inner and outer receivers mainly use axial gas inlet, with process gas entering the reaction chamber from the top. The problem with this is that the process gas inlet path is long, the inlet speed is slow, and the production efficiency of ammonia synthesis is low. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an inner and outer receiver for the reactor of a synthetic ammonia tower. A radial air inlet structure is provided on the cylinder wall of the inner and outer receivers, so that the reaction gas enters the reaction chamber with a larger area, shortening the air inlet path and improving the efficiency of the reaction chamber.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] An inner and outer receiver of a synthetic ammonia tower reactor includes a cylindrical inner receiver and an outer receiver. The upper ends of the inner and outer receivers are fixedly connected by a cover plate. The outer and inner receivers have elongated hole structures along the radial direction. The outer receiver has a large outer diameter and a small inner diameter for the elongated hole structure, while the inner receiver has a small inner diameter and a large outer diameter for the elongated hole structure.

[0006] The cover plate is provided with an axial air inlet, that is, the best implementation of this case is axial and radial process gas intake.

[0007] Furthermore, the elongated perforated structures are evenly distributed on the inner and outer receiver cylinder walls.

[0008] Furthermore, the elongated hole structure can be arranged horizontally or vertically, or the elongated hole structure can be arranged alternately horizontally and vertically.

[0009] Furthermore, the cross-section of the elongated hole structure is trapezoidal, and the width of its inner hole diameter is smaller than the diameter of the catalyst particles. The inner and outer receivers can effectively bind the catalyst particles between them, preventing the catalyst particles from overflowing from the inner receiver into the heat exchange chamber.

[0010] The beneficial effects of this utility model are as follows:

[0011] Compared to the traditional internal and external receiver structure of the ammonia synthesis tower reactor, this invention features a radial air inlet structure on the inner and outer receiver cylinder walls. This allows the reaction gas to enter the reaction chamber with a larger surface area, shortening the air inlet path and improving the air inlet efficiency of the reaction chamber. The outer receiver's elongated hole structure, with a larger outer diameter and a smaller inner diameter, facilitates increasing the air inlet velocity of the reaction gas and improving the ammonia synthesis conversion rate. The inner receiver's hole structure, with a smaller inner diameter and a larger outer diameter, increases the heat exchange area with the heat exchange chamber, which is beneficial for rapid cooling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the elongated hole structure in an embodiment of the present invention.

[0014] 1-External receiver, 2-Internal receiver, 3-Cover plate, 4-Axial air inlet, 5-Elongated hole structure, 6-Catalyst particles, 7-Heat exchanger. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0016] As attached Figure 1 and attached Figure 2 The diagram shows an inner and outer receiver of a synthetic ammonia tower reactor, which includes a cylindrical inner receiver 2 and an outer receiver 1. The upper ends of the inner receiver 2 and the outer receiver 1 are fixedly connected by a cover plate 3. The outer receiver 2 and the inner receiver 1 have elongated hole structures 5 in the radial direction. The outer hole structure 5 of the outer receiver 1 has a large outer diameter and a small inner diameter, while the elongated hole structure 5 of the inner receiver 2 has a small inner diameter and a large outer diameter.

[0017] The cover plate 3 is provided with an axial air inlet 4, that is, the best implementation of this case is axial and radial process air intake.

[0018] Furthermore, the elongated hole structure 5 is evenly distributed on the inner and outer receiver cylinder walls.

[0019] Furthermore, the elongated hole structure 5 can be arranged horizontally or vertically, or the elongated hole structure can be arranged alternately horizontally and vertically.

[0020] Furthermore, the cross-section of the elongated hole structure 5 is trapezoidal, and the width of its inner hole diameter is smaller than the diameter of the catalyst particles. The inner and outer receivers can effectively bind the catalyst particles 6 between them, preventing the catalyst particles from overflowing from the inner receiver into the heat exchange chamber. The inner receiver is close to the heat exchanger 7.

[0021] The elongated orifice of the external receiver allows the reactant gas to enter the reaction chamber with a larger surface area, shortening the gas inlet path and improving the gas inlet efficiency of the reaction chamber. The elongated orifice structure of the external receiver, which is larger on the outside and smaller on the inside, facilitates increasing the gas inlet flow rate and improving the conversion rate of ammonia synthesis. The orifice structure of the internal receiver, which is smaller on the inside and larger on the outside, increases the heat exchange area with the heat exchange chamber, which is beneficial for rapid cooling.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present invention.

Claims

1. An inner and outer receiver of a synthetic ammonia tower inner part reactor, comprising a cylindrical inner receiver and an outer receiver, the upper ends of the inner receiver and the outer receiver being fixedly connected by a cover plate, characterized in that: Both the outer and inner receivers have elongated holes along the radial direction. The outer receiver has a large outer diameter and a small inner diameter, while the inner receiver has a small inner diameter and a large outer diameter.

2. The internal and external receivers of the reactor internals of the ammonia synthesis tower according to claim 1, characterized in that, The cover plate is provided with an axial air inlet.

3. The internal and external receivers of the reactor internals of the ammonia synthesis tower according to claim 1, characterized in that, The elongated perforated structure is evenly distributed on the inner and outer receiver cylinder walls.

4. The internal and external receivers of the reactor internals of the ammonia synthesis tower according to claim 1, characterized in that, The elongated hole structure can be arranged horizontally or vertically.

5. The internal and external receivers of the reactor internals of the ammonia synthesis tower according to claim 1, characterized in that, The elongated hole structure is arranged alternately in the horizontal and vertical directions.

6. The internal and external receivers of the reactor internals of the ammonia synthesis tower according to claim 1, characterized in that, The cross-section of the elongated pore structure is trapezoidal, and the width of its inner pore diameter is smaller than the diameter of the catalyst particles.

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