Cooling device for an RX gas converter furnace

Abstract

This utility model relates to a cooling device for an RX gas conversion furnace, including a main cooling water circuit and a backup water circuit. The main cooling water circuit includes a water outlet of the RX gas conversion furnace, a cooling tower, and a water storage tank connected sequentially via pipes. The water inlet of the RX gas conversion furnace is connected to an inlet water pipe. The water storage tank is connected to the inlet water pipe via a first branch. The first branch includes a main cooling pump, a first manual valve, and a first check valve connected sequentially via pipes. The backup water circuit includes a tap water source connected sequentially via pipes, a second manual valve for controlling the tap water source entering the backup water circuit, a second check valve, and a second branch. The second branch is connected to the inlet water pipe. A solenoid valve is installed between the second manual valve and the second check valve. The solenoid valve opens when de-energized and closes when energized. The first and second manual valves are normally open. By adopting the above technical solution, the cooling water supply is ensured to be uninterrupted during power outages, preventing thermal deformation and leakage of the equipment, improving equipment safety, and extending equipment life.

Description

Technical Field

[0001] This utility model relates to a cooling device for an RX gas conversion furnace. Background Technology

[0002] An RX gas conversion furnace is a device used to create a protective atmosphere for heat treatment, primarily applied in the heat treatment of metal materials such as fasteners. Its core function is to convert raw material gas (such as natural gas or propane) into a reducing atmosphere (RX gas) rich in CO and H2 through catalytic cracking reactions (e.g., CH4 + H2O → CO + 3H2), used to prevent metal oxidation and control decarburization or carburizing processes.

[0003] RX gas conversion furnaces require a continuous supply of cooling water during operation; any interruption will trigger a chain reaction of equipment failures and safety risks. RX conversion furnaces typically operate at high temperatures of 900–1050℃. If the catalyst bed (such as nickel-based catalysts) loses cooling, the temperature will rapidly exceed the critical value of 950℃, leading to catalyst sintering failure and permanent loss of catalytic activity, with replacement costs reaching hundreds of thousands of dollars. During a water outage, the high-temperature gas inside the furnace contracts, creating a negative pressure of 0.3–0.5 atm, which may draw in air or moisture from open ends (such as the inlet pipe), potentially causing an explosion and resulting in casualties. Without cooling, uneven thermal expansion of the furnace's metal components (such as the reactor shell and flanges) can cause stress cracks, leading to equipment deformation and leaks, resulting in high maintenance costs and significant safety risks. Utility Model Content

[0004] In summary, to overcome the shortcomings of the prior art, this utility model provides a cooling device for an RX gas conversion furnace.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for an RX gas conversion furnace, comprising a main cooling water circuit and a backup water circuit. The main cooling water circuit includes a water outlet of the RX gas conversion furnace, a cooling tower, and a water storage tank connected sequentially via pipes. The water inlet of the RX gas conversion furnace is connected to an inlet water pipe. The water storage tank is connected to the inlet water pipe via a first branch. The first branch includes a main cooling pump, a first manual valve, and a first check valve connected sequentially via pipes. The backup water circuit includes a tap water source connected sequentially via pipes, a second manual valve for controlling the tap water source entering the backup water circuit, a second check valve, and a second branch. The second branch is connected to the inlet water pipe. A solenoid valve is provided between the second manual valve and the second check valve. The solenoid valve opens when de-energized and closes when energized. The first manual valve and the second manual valve are in a normally open state.

[0006] By adopting the above technical solution, under power-on conditions, the main cooling pump draws water from the water storage tank, which enters the inlet pipe through the first one-way valve. Then, the water flows through the inlet of the RX gasification furnace to cool the furnace. After cooling, the wastewater is cooled by the cooling tower and returned to the water storage tank. When the power is off, the main cooling pump cannot work, the solenoid valve opens automatically, and the backup water circuit uses the pressure of tap water to enter the inlet pipe through the second branch to cool the RX gasification furnace. After cooling, the wastewater is cooled by the cooling tower and returned to the water storage tank. This ensures that the cooling water supply to the RX gasification furnace is uninterrupted during power outages, prevents catalyst sintering failure, avoids equipment thermal deformation and leakage, improves equipment safety, and extends equipment life.

[0007] The present invention further includes a third manual valve provided between the second manual valve and the second check valve. The third manual valve is connected in parallel with the solenoid valve and is normally closed.

[0008] By adopting the above technical solution, when the solenoid valve fails, the backup water circuit can be opened through the third manual valve. Alternatively, when the main cooling pump fails but there is no power outage, the backup water circuit can also be opened through the third manual valve. This triple protection can significantly improve reliability, safety, and production continuity.

[0009] The present invention further comprises: the two ends of the solenoid valve are connected in series with the fourth manual valve and the fifth manual valve respectively through pipes, the fourth manual valve and the fifth manual valve are connected in parallel with the third manual valve, and the fourth manual valve and the fifth manual valve are in the normally open state.

[0010] By adopting the above technical solution, when the solenoid valve needs maintenance, the fourth and fifth manual valves can be manually closed, thus not affecting the use of the backup water circuit, facilitating maintenance, and further improving safety.

[0011] The present invention further includes the following configuration: the water storage tank is connected to the water inlet pipe via a third branch, the third branch including a standby cooling pump, a sixth manual valve and a third check valve connected in sequence via pipes, and the third branch is configured in parallel with the first branch.

[0012] By adopting the above technical solution, a third branch is set up, and water is drawn from the water storage tank through a backup cooling pump, enters the water inlet pipeline through the third check valve, and then cools the RX gasification furnace through the water inlet. The dual cooling pumps supply water, avoiding the main cooling water circuit from being unable to supply water due to the failure of a single cooling pump, facilitating maintenance, and further improving reliability, safety and production continuity; it can also avoid the overload operation of a single pump, reduce energy consumption, and stabilize water supply.

[0013] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the waterway in an embodiment of the present utility model.

[0015] Attached reference numerals: 1. Main cooling water circuit, 2. Backup water circuit, 21. Second manual valve, 22. Second check valve, 23. Solenoid valve, 24. Third manual valve, 25. Fourth manual valve, 26. Fifth manual valve, 3. RX gasification furnace, 4. Cooling tower, 5. Water storage tank, 6. Inlet pipe, 61. First branch, 611. Main cooling pump, 612. First manual valve, 613. First check valve, 62. Second branch, 63. Third branch, 631. Backup cooling pump, 632. Sixth manual valve, 633. Third check valve, 7. Tap water source. Detailed Implementation

[0016] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0017] See appendix Figure 1 A cooling device for an RX gas conversion furnace includes a main cooling water circuit 1 and a backup water circuit 2. The main cooling water circuit 1 includes an outlet of the RX gas conversion furnace 3, a cooling tower 4, and a water storage tank 5 connected in sequence via pipes. The inlet of the RX gas conversion furnace 3 is connected to an inlet water pipe 6. The water storage tank 5 is connected to the inlet water pipe 6 via a first branch 61. The first branch 61 includes a main cooling pump 611, a first manual valve 612, and a first check valve 613 connected in sequence via pipes. The backup water circuit 2 includes a tap water source 7 connected in sequence via pipes, a second manual valve 21 for controlling the tap water source 7 entering the backup water circuit 2, a second check valve 22, and a second branch 62. The second branch 62 is connected to the inlet water pipe 6. A solenoid valve 23 is provided between the second manual valve 21 and the second check valve 22. The solenoid valve 23 is open when de-energized and closed when energized. The first manual valve 612 and the second manual valve 21 are in a normally open state.

[0018] In this embodiment, a third manual valve 24 is provided between the second manual valve 21 and the second check valve 22, and the third manual valve 24 is connected in parallel with the solenoid valve 23.

[0019] In this embodiment, the solenoid valve 23 is further configured such that its two ends are connected in series with the fourth manual valve 25 and the fifth manual valve 26 via pipes, and the fourth manual valve 25 and the fifth manual valve 26 are connected in parallel with the third manual valve 24.

[0020] In this embodiment, the water storage tank 5 is further configured to be connected to the water inlet pipe 6 via a third branch 63. The third branch 63 includes a standby cooling pump 631, a sixth manual valve 632 and a third check valve 633 connected in sequence via pipes. The third branch 63 is configured in parallel with the first branch 61.

[0021] The term "between" as used above does not only refer to directions or positions, but also to the interactions between different parts. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0022] Although this document frequently uses terms such as main cooling water circuit 1, backup water circuit 2, second manual valve 21, second check valve 22, solenoid valve 23, third manual valve 24, fourth manual valve 25, fifth manual valve 26, RX gasification furnace 3, cooling tower 4, water storage tank 5, inlet pipe 6, first branch 61, main cooling pump 611, first manual valve 612, first check valve 613, second branch 62, third branch 63, backup cooling pump 631, sixth manual valve 632, third check valve 633, and tap water source 7, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A cooling device for an RX gas conversion furnace, characterized in that: The system includes a main cooling water circuit and a backup cooling water circuit. The main cooling water circuit includes a water outlet of the RX gasification furnace, a cooling tower, and a water storage tank connected in sequence via pipes. The water inlet of the RX gasification furnace is connected to the water inlet pipe. The water storage tank is connected to the water inlet pipe via a first branch. The first branch includes a main cooling pump, a first manual valve, and a first check valve connected in sequence via pipes. The backup cooling water circuit includes a tap water source connected in sequence via pipes, a second manual valve for controlling the tap water source entering the backup cooling water circuit, a second check valve, and a second branch. The second branch is connected to the water inlet pipe. A solenoid valve is installed between the second manual valve and the second check valve. The solenoid valve opens when de-energized and closes when energized. The first manual valve and the second manual valve are in a normally open state.

2. The cooling device for an RX gas conversion furnace according to claim 1, characterized in that: A third manual valve is provided between the second manual valve and the second check valve, and the third manual valve is connected in parallel with the solenoid valve.

3. The cooling device for an RX gas conversion furnace according to claim 2, characterized in that: The two ends of the solenoid valve are connected in series with the fourth manual valve and the fifth manual valve through pipes, and the fourth manual valve, the fifth manual valve and the third manual valve are connected in parallel.

4. The cooling device for an RX gas conversion furnace according to claim 1, characterized in that: The water storage tank is connected to the water inlet pipeline via a third branch. The third branch includes a standby cooling pump, a sixth manual valve, and a third check valve connected in sequence via pipes. The third branch is arranged in parallel with the first branch.

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