Sulfuric acid converter device beneficial to gas uniform distribution and bias flow prevention

Abstract

The utility model relates to an anti-bias sulfuric acid converter device beneficial to uniform gas distribution, which belongs to the technical field of sulfuric acid converters and comprises a converter, a catalyst bed layer and a heat exchanger are arranged in the converter, a communicated first gas inlet is arranged at a tube pass inlet of the heat exchanger, and a gas uniform distribution device is arranged at a tube pass outlet of the heat exchanger. A shell pass inlet of the heat exchanger is provided with a communicated second air inlet, the catalyst bed layer is located between the heat exchanger and the converter, a center sleeve and an air collecting cylinder are arranged below the catalyst bed layer in a staggered mode, and a shell pass outlet of the heat exchanger is provided with an air outlet located in the top end of the converter. According to the converter, the problem of local overheating of a bias catalyst due to uneven gas distribution is solved, the utilization rate and conversion efficiency of the catalyst are improved, and under the same working condition, the flue gas amount is reduced, cost is reduced, efficiency is improved and quality is improved. And primary uniform distribution is performed through the gas uniform distribution device. The gas collection cylinder and the center cylinder sleeve are arranged in a staggered mode, gas mixing is enhanced, and bias flow is prevented.

Description

Technical Field

[0001] This utility model relates to a sulfuric acid converter device that facilitates uniform gas distribution and prevents flow deviation, and belongs to the field of sulfuric acid converter technology. Background Technology

[0002] In sulfuric acid production, the converter is a crucial piece of equipment for sulfur dioxide conversion. Traditional converters suffer from uneven gas distribution and flow deviation, leading to locally excessively high reaction temperatures and causing converter deformation and burnout. Furthermore, some catalysts may exceed their operating temperature, resulting in catalyst poisoning and low conversion efficiency. High temperatures also increase the amount of gas required for converter operation, increasing energy consumption and costs. It can also potentially affect product quality. Therefore, developing a sulfuric acid converter that promotes uniform gas distribution and prevents flow deviation is essential. Utility Model Content

[0003] This invention addresses the shortcomings of the prior art by providing a sulfuric acid converter device that facilitates uniform gas distribution and prevents flow deviation.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A sulfuric acid converter device that facilitates uniform gas distribution and prevents flow deviation includes a converter, a catalyst bed and a heat exchanger inside the converter, a gas inlet A connected to the tube side inlet of the heat exchanger, a gas distribution device at the tube side outlet of the heat exchanger, a gas inlet B connected to the shell side inlet of the heat exchanger, the catalyst bed located between the heat exchanger and the converter, a central sleeve and a gas collection cylinder arranged in an alternating manner below the catalyst bed, and a gas outlet located at the top of the converter at the shell side outlet of the heat exchanger.

[0006] Furthermore, the gas distribution device includes an arc-shaped baffle disposed between the catalyst bed and the heat exchanger.

[0007] Furthermore, the bow-shaped baffle is evenly distributed with several vent holes, and the diameter of the vent holes decreases from the center to the edge.

[0008] Furthermore, a guide plate is provided above the bow-shaped baffle to guide the gas flow and is inclined.

[0009] Furthermore, the gas distribution device includes an annular baffle disposed below the bow-shaped baffle.

[0010] Furthermore, the air collection cylinder is provided with several air duct inlets.

[0011] Furthermore, the central sleeve is provided with several gas inlets.

[0012] Furthermore, the heat exchanger is provided with several heat exchange inlets.

[0013] Furthermore, the number of shell entry points is several.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: The converter of this application solves the problem of uneven gas distribution and localized catalyst overheating, improves catalyst utilization and conversion efficiency, and reduces flue gas volume under the same operating conditions, thus reducing costs, increasing efficiency, and improving quality. Initial uniform distribution is achieved through a gas distribution device. The staggered arrangement of the gas collecting cylinder and the central cylinder sleeve ensures that the reacted flue gas undergoes multiple mixing processes before entering the heat exchanger shell side, enhancing gas mixing and preventing flow deviation. Evenly distributed vent holes on the bow-shaped baffle further homogenize the gas distribution, reducing localized overheating. The tilt angle and position of the guide plates on the bow-shaped baffle optimize the gas flow path, improving gas mixing efficiency. The converter of this application reduces the temperature difference at various points of reaction, effectively solving the problem of localized catalyst overheating caused by uneven gas distribution and flow deviation. By optimizing the gas flow path and mixing efficiency, the problems of uneven gas distribution and flow deviation are solved, improving catalyst utilization and conversion efficiency, reducing flue gas volume, and achieving cost reduction, efficiency improvement, and quality enhancement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure along direction A.

[0017] Figure 3 This is the left view of the structure from direction B.

[0018] In the diagram, 1 is the converter; 2 is the gas collection cylinder; 3 is the bow-shaped baffle; 4 is the annular baffle; 5 is the catalyst bed; 6 is the air duct inlet; 7 is the heat exchanger; 8 is the gas inlet A; 9 is the gas inlet B; 10 is the gas inlet; 11 is the shell-side inlet; 12 is the gas outlet; 13 is the tube-side inlet; 14 is the central sleeve; and 15 is the tube-side outlet. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] like Figures 1-3As shown, a sulfuric acid converter device that facilitates uniform gas distribution and prevents flow deviation includes a converter 1. The converter 1 is provided with a catalyst bed 5 and a heat exchanger 7. The tube-side inlet 13 of the heat exchanger 7 is provided with a connected air inlet A 8, the tube-side outlet 15 of the heat exchanger 7 is provided with a gas distribution device, and the shell-side inlet 11 of the heat exchanger 7 is provided with a connected air inlet B 9. The catalyst bed 5 is located between the heat exchanger 7 and the converter 1. Below the catalyst bed 5, there are staggered central sleeves 14 and gas collection cylinders 2. The shell-side outlet of the heat exchanger 7 is provided with an air outlet 12, which is located at the top of the converter 1.

[0021] Sulfur dioxide-containing gas enters the tube-side inlet 13 through inlet A 8, then passes through heat exchanger 7 and enters the gas distribution device at tube-side outlet 15 for preliminary distribution. It then passes through catalyst bed 5 for conversion reaction. The converted gas enters the gas collection cylinder 2 below catalyst bed 5 for pre-distribution, and then enters the central sleeve 14. Through multiple changes in gas flow direction, thorough mixing and gas distribution are achieved. The gas, after heat exchange between the shell side and tube side of heat exchanger 7, is discharged from outlet 12 of converter 1. The converter 1 of this application solves the problem of uneven gas distribution, eccentric flow, and localized catalyst overheating, improving catalyst utilization and conversion efficiency. Under the same operating conditions, it reduces flue gas volume, reducing costs, increasing efficiency, and improving quality. The staggered arrangement of gas collection cylinder 2 and central sleeve 14 ensures that the flue gas after reaction is mixed multiple times before entering the shell side of heat exchanger 7, enhancing gas mixing and preventing eccentric flow.

[0022] The gas distribution device includes an arc-shaped baffle 3 positioned between the catalyst bed 5 and the heat exchanger 7. The arc-shaped baffle 3 has several evenly distributed vent holes, with the hole diameter decreasing from the center to the edge. These vent holes ensure more uniform gas distribution and reduce localized overheating. Above the arc-shaped baffle 3 is a guide plate, angled to optimize gas flow and improve gas mixing efficiency. The gas distribution device also includes an annular baffle 4 positioned below the arc-shaped baffle 3.

[0023] The gas collection cylinder 2 is provided with several air duct inlets 6. The converted gas enters the air duct inlets 6 of the gas collection cylinder 2 below the catalyst bed 5 and is pre-distributed.

[0024] The central sleeve 14 is provided with several gas inlets 10.

[0025] The heat exchanger 7 is provided with several heat exchange inlets, which are used to enhance gas mixing, prevent interlayer flow deviation, and improve conversion efficiency.

[0026] The number of shell-side inlets 11 is several.

[0027] The converter 1 of this application reduces the temperature difference between reaction points, effectively solving the problem of local overheating of the catalyst caused by uneven gas distribution and flow deviation. By optimizing the gas flow path and mixing efficiency, the problems of uneven gas distribution and flow deviation are solved, improving the utilization rate and conversion efficiency of the catalyst, reducing the amount of flue gas, and achieving cost reduction, efficiency improvement and quality enhancement.

[0028] 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sulphuric acid converter arrangement which facilitates even distribution of gas and prevents flow deviation, comprising a converter (1), characterised in that: The converter (1) is provided with a catalyst bed (5) and a heat exchanger (7), the tube side inlet (13) of the heat exchanger (7) is provided with a communication gas inlet A (8), the tube side outlet (15) of the heat exchanger (7) is provided with a gas uniform distribution device, the shell side inlet (11) of the heat exchanger (7) is provided with a communication gas inlet B (9), the catalyst bed (5) is located between the heat exchanger (7) and the converter (1), the catalyst bed (5) is provided below with a staggered center sleeve (14) and a gas collecting cylinder (2), the shell side outlet of the heat exchanger (7) is provided with a gas outlet (12), and the gas outlet (12) is located at the top end of the converter (1).

2. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 1, wherein: The gas uniform distribution device comprises an arc baffle (3) arranged between the catalyst bed (5) and the heat exchanger (7).

3. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 2, wherein: The arc baffle (3) is uniformly provided with a plurality of air holes, and the diameters of the air holes decrease from the center to the edge.

4. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 2, wherein: An air guide plate is arranged above the arc baffle (3) and is inclined to guide the gas flow.

5. A sulphuric acid converter arrangement facilitating even gas distribution and preventing gas deflection according to claim 2 or 3 or 4, characterized in that: The gas uniform distribution device comprises an annular baffle (4) arranged below the arc baffle (3).

6. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 1, wherein: The gas collecting cylinder (2) is provided with a plurality of air duct inlets (6).

7. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 1, wherein: The center sleeve (14) is provided with a plurality of gas inlets (10).

8. The sulfuric acid converter apparatus to facilitate even gas distribution and prevent flow biasing of claim 1, wherein: The heat exchanger (7) is provided with a plurality of heat exchange gas inlets.

9. The sulfuric acid converter apparatus to facilitate uniform gas distribution and prevent flow maldistribution of claim 1, wherein: The number of the shell side inlets (11) is several.

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