Device for increasing bed temperature in secondary converter for sulfur recovery

Abstract

This utility model discloses a device for increasing the bed temperature of a secondary converter in sulfur recovery. It includes a primary converter and a secondary converter connected in series. The primary converter is connected to a primary process gas heater via process gas inlet and outlet pipelines. The primary converter is also connected to a process gas heat exchanger via its outlet pipeline. The process gas heat exchanger is connected to the secondary converter, which is in turn connected to a secondary process gas heater. The secondary process gas heater is connected to the process gas heat exchanger and to a condensate tank. Both the primary and secondary process gas heaters are connected to steam inlet pipelines. This invention solves the problem that existing devices cannot effectively control the converter bed temperature when the production load is low or the heat exchange capacity of the process gas heater is insufficient.

Description

Technical Field

[0001] This utility model belongs to the technical field of sulfur recovery devices, specifically relating to a device for increasing the bed temperature of a secondary converter for sulfur recovery. Background Technology

[0002] During the operation of sulfur recovery units, when the production load is low or the heat exchange of the process gas heater is insufficient, the temperature of the secondary converter bed often fails to reach the ideal state, leading to a decrease in the overall conversion rate of the sulfur recovery unit. Currently, existing units lack effective temperature control methods for such operating conditions, making it impossible to effectively control the converter bed temperature and thus affecting the efficiency and effectiveness of sulfur recovery. Furthermore, existing units also have shortcomings in steam utilization and condensate recovery, resulting in some energy waste. Utility Model Content

[0003] The purpose of this invention is to provide a device for increasing the bed temperature of a secondary converter in sulfur recovery. It solves the problem that existing devices cannot effectively control the converter bed temperature when the production load is low or the heat exchange of the process gas heater is insufficient.

[0004] The technical solution adopted in this utility model is as follows: a device for increasing the bed temperature of a secondary converter for sulfur recovery, comprising a primary converter and a secondary converter connected in series. The primary converter is connected to a primary process gas heater through a primary converter inlet pipe. The primary converter is connected to a process gas heat exchanger through a primary converter outlet pipe. The process gas heat exchanger is connected to the secondary converter. The secondary converter is connected to a secondary process gas heater. The secondary process gas heater is connected to the process gas heat exchanger. The secondary process gas heater is connected to a condensate tank. Both the primary process gas heater and the secondary process gas heater are connected to steam inlet pipes.

[0005] The technical solution adopted in this utility model is also characterized by:

[0006] Furthermore, the secondary converter, process gas heat exchanger, and condensate tank are all connected to a sulfur cooler via pipelines.

[0007] Furthermore, a steam regulating valve is installed on the steam inlet pipe.

[0008] Furthermore, a steam thermometer and a steam flow meter are installed on the steam inlet pipe.

[0009] Furthermore, the secondary process gas heater is connected to a condensate pipe, which is equipped with a steam trap. The other end of the condensate pipe is connected to a condensate tank.

[0010] Furthermore, the condensate tank is connected to the steam inlet pipe via a condensate tank vapor phase pipe and a manual valve.

[0011] Furthermore, a condensate tank level gauge is installed on the condensate tank.

[0012] Furthermore, a process gas pipeline thermometer is installed on the outlet pipeline of the secondary process gas heater.

[0013] Furthermore, the process gas heat exchanger is connected to the secondary converter via a short-circuit pipe for the secondary process gas heater, and a jacketed ball valve is installed on the short-circuit pipe for the secondary process gas heater.

[0014] Furthermore, the secondary process gas heater and the secondary process gas heater short-circuit pipe are also connected through the secondary process gas heater inlet pipe.

[0015] The beneficial effects of this utility model are:

[0016] This utility model device has a simple structure and is easy to operate, and can effectively control the temperature of the converter bed.

[0017] This invention improves the conversion rate of acidic gas in sulfur recovery devices and enhances the efficiency of sulfur recovery.

[0018] The device of this invention can recover steam condensate to a condensate tank, and utilize the principle of gas-liquid balance to recover and utilize steam, thereby reducing steam consumption and energy consumption.

[0019] This utility model device is suitable for various operating conditions such as low system production load and poor heat exchange effect of process gas heat exchanger. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall device of this utility model.

[0021] In the diagram, 1. First-stage converter; 2. Second-stage converter; 3. First-stage process gas heater; 4. First-stage converter inlet pipe; 5. Process gas heat exchanger; 6. First-stage converter outlet pipe; 7. Second-stage process gas heater; 8. Second-stage process gas heater inlet pipe; 9. Second-stage process gas heater outlet pipe; 10. Jacketed ball valve; 11. Process gas pipeline thermometer; 12. Steam inlet pipe; 13. Steam regulating valve; 14. Steam flow meter; 15. Steam thermometer; 16. Hand valve; 17. Condensate pipeline; 18. Steam trap; 19. Condensate tank; 20. Condensate tank level gauge; 21. Condensate tank vapor phase pipeline; 22. Second-stage process gas heater short-circuit pipeline. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] This utility model addresses the problems existing in the prior art by providing a device for controlling the bed temperature of a secondary converter for sulfur recovery, such as... Figure 1As shown, the device includes a primary converter 1, a secondary converter 2, a primary process gas heater 3, a process gas heat exchanger 5, a secondary process gas heater 7, a jacketed ball valve 10, a process gas pipeline thermometer 11, a steam inlet pipeline 12, a steam regulating valve 13, a steam flow meter 14, a steam thermometer 15, a manual valve 16, a condensate pipeline 17, a steam trap 18, a condensate tank 19, and a condensate tank level gauge 20. By increasing steam heating, the bed temperature of the secondary converter is increased when the production load is low or the heat exchange of the process gas heater is insufficient, thereby improving the overall conversion rate of the sulfur recovery unit.

[0024] The device of this utility model mainly consists of the following parts:

[0025] Process gas heaters 3 and 7: used for preliminary heating of process gas.

[0026] Secondary process gas inlet and outlet pipelines 8 and 9: realize the input and output of process gas.

[0027] Steam inlet pipe 12: Used to introduce heating steam.

[0028] Condensate pipe 17: Discharges condensate after steam condensation.

[0029] Steam regulating valve 13: Regulates the steam flow rate to control the heating amount.

[0030] Steam trap 18: Automatically drains condensate to prevent steam leakage.

[0031] Steam thermometer 15: Monitors the temperature of steam.

[0032] Steam flow meter 14: measures the flow rate of steam.

[0033] Manual valve 16: Used for manually controlling the on / off state of pipelines.

[0034] Process gas heaters 3 and 7: further heat the process gas to increase the bed temperature of the secondary converter.

[0035] Process gas pipeline thermometer 11: monitors the temperature of process gas in the pipeline.

[0036] Condensate tank 19: for collecting steam condensate.

[0037] Condensate tank level gauge 20: Monitors the liquid level in the condensate tank.

[0038] Jacketed ball valve 10: Used to control the flow of the medium in the jacket.

[0039] The positional and connection relationships between the components are as follows: the process gas inlet and outlet pipelines are connected to the process gas heater; the steam inlet pipeline is connected to the steam heater via a hand valve; the steam regulating valve is installed on the steam inlet pipeline; the steam thermometer and steam flow meter are also installed on the steam inlet pipeline; the condensate outlet pipeline is connected to the steam heater; the steam trap is installed on the condensate outlet pipeline; the other end of the condensate outlet pipeline is connected to the condensate tank; the condensate tank level gauge is installed on the condensate tank; the condensate tank vapor phase pipeline is connected to the steam inlet / outlet pipeline of the process gas heater; the process gas pipeline thermometer is installed on the process gas inlet and outlet pipelines; and the jacketed ball valve is installed in the corresponding jacketed pipeline.

[0040] Explanation of components and interactions:

[0041] Steam regulating valves control the amount of steam entering the steam heater by adjusting the steam flow rate, thereby regulating the heating temperature.

[0042] The function of a steam trap is to promptly discharge the condensate after steam condensation, while preventing steam from escaping and ensuring the effective utilization of steam.

[0043] Steam thermometers and steam flow meters monitor the temperature and flow rate of steam in real time, providing operators with accurate parameters for adjustment and control.

[0044] Condensate tanks are used to recover steam condensate, and condensate tank level gauges allow operators to understand the liquid level inside the tank for timely handling.

[0045] The jacketed ball valve regulates the flow rate of process gas into the heater, which facilitates control of the bed temperature in the secondary converter.

[0046] Working principle or working process description:

[0047] When the production load is low or the heat exchange of the process gas heater is insufficient, the jacket ball valve is partially closed or shut off, and the manual valve on the steam inlet pipeline is opened. Steam enters through the steam inlet pipeline, its flow rate is regulated by the steam regulating valve, measured by the steam flow meter, and monitored by the steam thermometer before entering the steam heater. In the steam heater, the steam exchanges heat with the process gas, heating it and raising its temperature, thereby increasing the temperature of the secondary converter bed. The condensate produced after heat exchange is discharged through the condensate outlet pipeline via a steam trap and enters the condensate tank for recovery, utilizing the gas-liquid balance principle to recover the flashed steam. The process gas pipeline thermometer monitors the process gas temperature in real time. Operators can control the steam flow rate by adjusting the steam regulating valve based on the temperature data, thereby precisely controlling the temperature of the secondary converter bed to improve the overall conversion rate of the sulfur recovery unit.

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0049] Example 1

[0050] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0051] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0052] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0053] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0054] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0055] Example 2

[0056] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0057] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0058] A steam regulating valve 13 is installed on the steam inlet pipe 12.

[0059] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0060] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0061] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0062] Example 3

[0063] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0064] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0065] A steam regulating valve 13 is installed on the steam inlet pipe 12.

[0066] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0067] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0068] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0069] A condensate tank level gauge 20 is installed on the condensate tank.

[0070] Example 4

[0071] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0072] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0073] A steam regulating valve 13 is installed on the steam inlet pipe 12.

[0074] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0075] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0076] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0077] A condensate tank level gauge 20 is installed on the condensate tank.

[0078] A process gas pipeline thermometer 11 is installed on the outlet pipeline 9 of the secondary process gas heater.

[0079] Example 5

[0080] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0081] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0082] A steam regulating valve 13 is installed on the steam inlet pipe 12.

[0083] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0084] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0085] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0086] A condensate tank level gauge 20 is installed on the condensate tank.

[0087] A process gas pipeline thermometer 11 is installed on the outlet pipeline 9 of the secondary process gas heater.

[0088] The process gas heat exchanger 5 is connected to the secondary converter 2 through the secondary process gas heater short-circuit pipe 22, and a jacketed ball valve 10 is installed on the secondary process gas heater short-circuit pipe 22.

[0089] Example 6

[0090] The apparatus for increasing the bed temperature of a secondary converter in sulfur recovery includes a primary converter 1 and a secondary converter 2 connected together. The primary converter 1 is connected to a primary process gas heater 3 via a primary converter inlet pipe 4. The primary converter 1 is connected to a process gas heat exchanger 5 via a primary converter outlet pipe 6. The process gas heat exchanger 5 is connected to the secondary converter 2. The secondary converter 2 is connected to a secondary process gas heater 7. The secondary process gas heater 7 is connected to the process gas heat exchanger 5. The secondary process gas heater 7 is connected to a condensate tank 19. Both the primary process gas heater 3 and the secondary process gas heater 7 are connected to a steam inlet pipe 12.

[0091] The secondary converter 2, process gas heat exchanger 5, and condensate tank 19 are all connected to a sulfur cooler via pipelines.

[0092] A steam regulating valve 13 is installed on the steam inlet pipe 12.

[0093] A steam thermometer 15 and a steam flow meter 14 are installed on the steam inlet pipe 12.

[0094] The secondary process gas heater 7 is connected to a condensate pipe 17, and a steam trap 18 is installed on the condensate pipe 17. The other end of the condensate pipe 17 is connected to a condensate tank 19.

[0095] The condensate tank 19 is connected to the steam inlet pipe 12 via the condensate tank vapor phase pipe 21 and the hand valve 16.

[0096] A condensate tank level gauge 20 is installed on the condensate tank.

[0097] A process gas pipeline thermometer 11 is installed on the outlet pipeline 9 of the secondary process gas heater.

[0098] The process gas heat exchanger 5 is connected to the secondary converter 2 through the secondary process gas heater short-circuit pipe 22, and a jacketed ball valve 10 is installed on the secondary process gas heater short-circuit pipe 22.

[0099] The secondary process gas heater 7 and the secondary process gas heater short-circuit pipe 22 are also connected through the secondary process gas heater inlet pipe 8.

[0100] The above are merely preferred embodiments of this utility model and do not limit the scope of patent protection of this utility model. Besides the above embodiments, this utility model may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model. Technical features of this utility model not described can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A device for increasing the bed temperature of a secondary converter for sulfur recovery, characterized in that, It includes a primary converter (1) and a secondary converter (2) connected together. The primary converter (1) is connected to a primary process gas heater (3) through a primary converter inlet pipe (4). The primary converter (1) is connected to a process gas heat exchanger (5) through a primary converter outlet pipe (6). The process gas heat exchanger (5) is connected to the secondary converter (2). The secondary converter (2) is connected to a secondary process gas heater (7). The secondary process gas heater (7) is connected to the process gas heat exchanger (5). The secondary process gas heater (7) is connected to a condensate tank (19). Both the primary process gas heater (3) and the secondary process gas heater (7) are connected to a steam inlet pipe (12).

2. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 1, characterized in that, The secondary converter (2), process gas heat exchanger (5), and condensate tank (19) are all connected to a sulfur cooler via pipelines.

3. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 2, characterized in that, A steam regulating valve (13) is installed on the steam inlet pipe (12).

4. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 3, characterized in that, A steam thermometer (15) and a steam flow meter (14) are installed on the steam inlet pipe (12).

5. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 4, characterized in that, The secondary process gas heater (7) is connected to a condensate pipe (17), a drain valve (18) is installed on the condensate pipe (17), and the other end of the condensate pipe (17) is connected to a condensate tank (19); the secondary process gas heater (7) is connected to the secondary converter (2) through the secondary process gas heater outlet pipe (9).

6. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 5, characterized in that, The condensate tank (19) is connected to the steam inlet pipe (12) via the condensate tank vapor phase pipe (21) and the hand valve (16).

7. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 6, characterized in that, A condensate tank level gauge (20) is installed on the condensate tank (19).

8. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 7, characterized in that, A process gas pipeline thermometer (11) is installed on the outlet pipeline (9) of the secondary process gas heater.

9. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 8, characterized in that, The process gas heat exchanger (5) is connected to the secondary converter (2) through the secondary process gas heater short-circuit pipe (22), and a jacketed ball valve (10) is provided on the secondary process gas heater short-circuit pipe (22).

10. The apparatus for increasing the bed temperature of a secondary converter for sulfur recovery according to claim 8, characterized in that, The secondary process gas heater (7) and the secondary process gas heater short-circuit pipe (22) are also connected through the secondary process gas heater inlet pipe (8).

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