Steam recycling device for boiler deaerator
By designing a steam recovery device in the boiler deaerator, and using the desalinated water spray pipe to contact the steam inlet pipe against the flow, the problem of waste of heat energy and desalinated water caused by steam and oxygen emissions is solved, and the effective utilization of steam thermal energy and the recycling of desalinated water is achieved.
Patent Information
- Application Number
- CN202421679352.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the boiler deaerator, steam and oxygen generated by heating of desalinated water are discharged through the pressure relief hole, resulting in waste of heat energy and desalinated water.
A boiler deaerator steam recycling device is designed, and the steam inlet pipe is contacted countercurrently with the steam inlet pipe through the desalinated water spray pipe, and the steam and oxygen are managed separately using the structure of the container and the pipeline.
The steam heat energy generated by the deaerator is effectively utilized, and the desalted water in the steam is recovered, saving the use of steam heat energy and desalted water.
Smart Images
Figure CN223036932U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steam recovery and utilization device for a boiler deaerator, belonging to the field of boiler deaerator equipment in the metallurgical industry. Background Art
[0002] In industries with boilers, a steam drum is generally configured. The demineralized water in the steam drum needs to be deaerated first to protect the boiler tubes and increase the service life of the boiler. In addition, the demineralized water in the deaerator needs to be heated to 102 - 104 °C, so that the demineralized water in the deaerator will boil, and a large amount of steam and oxygen generated will be discharged from the pressure relief hole at the top of the deaerator. This discharge will waste the heat energy of the steam and the demineralized water. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a steam recovery and utilization device for a boiler deaerator, which can make full use of the steam heat energy generated by the deaerator and recover the demineralized water in the steam, so as to solve the problems existing in the background art.
[0004] The technical solution of the utility model is as follows:
[0005] A steam recovery and utilization device for a boiler deaerator includes a demineralized water inlet pipe, a demineralized water spraying pipe, an oxygen discharge pipe, a container, a steam inlet pipe, a demineralized water discharge pipe and a vent pipe. The top of the container is connected to the oxygen discharge pipe, the bottom of the container is connected to the vent pipe, the upper part of the container is connected to the demineralized water inlet pipe, the lower part of the container is connected to the demineralized water discharge pipe, the middle part of the container is connected to the steam inlet pipe, the demineralized water spraying pipe is arranged inside the container, the demineralized water spraying pipe is connected to the demineralized water inlet pipe at the upper part of the container, and the demineralized water spraying pipe is provided with downward-facing water outlet holes.
[0006] The demineralized water spraying pipe is an annular pipe, and the size of the annular pipe matches that of the container.
[0007] There are three downward-facing water outlet holes on the demineralized water spraying pipe. The middle water outlet hole is directly above the extension line of the steam inlet pipe, and the angles between the two side water outlet holes and the middle water outlet hole are both 30°.
[0008] A demineralized water inlet valve is installed on the demineralized water inlet pipe, an oxygen vent valve is installed on the oxygen discharge pipe, a steam inlet valve is installed on the steam inlet pipe, and a vent pipe valve is installed on the vent pipe.
[0009] The distance between the demineralized water discharge pipe connected to the lower part of the container and the bottom of the container is ≥ 50 mm.
[0010] The beneficial effect of the utility model is that it can make full use of the steam heat energy generated by the deaerator and recover the demineralized water in the steam, effectively saving the steam heat energy and the demineralized water. Description of the Drawings
[0011] Figure 1 It is the front view of the structure of the present utility model.
[0012] Figure 2 It is the top view of the desalted water spraying pipe of the present utility model.
[0013] Figure 3 It is the cross-sectional view of the desalted water spraying pipe of the present utility model.
[0014] Reference numerals: desalted water inlet pipe 1, desalted water inlet valve 2, desalted water spraying pipe 3, oxygen discharge pipe 4, oxygen vent valve 5, container 6, steam inlet valve 7, steam inlet pipe 8, desalted water discharge pipe 9, vent pipe valve 10, vent pipe 11, water outlet hole 12. Detailed Embodiment
[0015] The present utility model will be further described below with reference to the drawings and by way of examples.
[0016] Referring to Figure 1 、 2 、3, a steam recovery and utilization device for a boiler deaerator, comprising a desalted water inlet pipe 1, a desalted water spraying pipe 3, an oxygen discharge pipe 4, a container 6, a steam inlet pipe 8, a desalted water discharge pipe 9 and a vent pipe 11. The top of the container 6 is connected to the oxygen discharge pipe 4, the bottom of the container 6 is connected to the vent pipe 11, the upper part of the container 6 is connected to the desalted water inlet pipe 1, the lower part of the container 6 is connected to the desalted water discharge pipe 9, the middle part of the container 6 is connected to the steam inlet pipe 8. The desalted water spraying pipe 3 is arranged inside the container 6, the desalted water spraying pipe 3 is connected to the desalted water inlet pipe 1 at the upper part of the container 6, and the desalted water spraying pipe 3 is provided with a downward-facing water outlet hole 12.
[0017] In this embodiment, referring to Figure 1 、 2 、3, the steam recovery and utilization device for the boiler deaerator includes a desalted water inlet pipe 1, a desalted water inlet valve 2, a desalted water spraying pipe 3, an oxygen discharge pipe 4, an oxygen vent valve 5, a container 6, a steam inlet valve 7, a steam inlet pipe 8, a desalted water discharge pipe 9, a vent pipe valve 10, a device vent pipe 11 and a water outlet hole 12.
[0018] The first-stage reactor and the second-stage reactor in the natural gas plant share a steam drum. The demineralized water of the steam drum comes from the deaerator. The steam and oxygen outlet pipes of the deaerator are the steam inlet pipe 8 in this device, with a pipe diameter of φ50. The height of the container 6 is 1200 mm and the diameter is 600 mm. The pipe diameter of the demineralized water inlet pipe 1 is φ25, the demineralized water pressure is 0.6 MPa, the pipe diameter of the oxygen discharge pipe 4 is φ25, the demineralized water discharge pipe 9 is close to the bottom of the container 6, with a distance from the bottom of the container 6 ≥ 50 mm, and its pipe diameter is φ80. The pipe diameter of the vent pipe 11 is φ50.
[0019] The pipe diameter of the demineralized water spraying pipe 3 is φ25. The demineralized water spraying pipe 3 is in a ring shape with a diameter of 300 mm. There are three water outlet holes 12 on the demineralized water spraying pipe 3. The middle water outlet hole 12 faces directly downward, and the angle between the two side water outlet holes 12 and the middle water outlet hole 12 is 30°.
[0020] The demineralized water spraying pipe 3 is located in the upper part of the container 6, about 260 mm away from the steam inlet pipe 8.
[0021] The working process of the present utility model includes the following steps:
[0022] a. The steam generated by the deaerator enters the container 6 through the steam inlet pipe 8.
[0023] b. Open the demineralized water inlet valve 2.
[0024] c. The demineralized water enters the demineralized water spraying pipe 3 from the external demineralized water pipe.
[0025] d. The demineralized water is sprayed downwards from the water outlet holes 12 on the demineralized water spraying pipe 3 and contacts the gas entering from the steam inlet pipe 8 in a countercurrent manner.
[0026] e. The steam is cooled down by the demineralized water, and the demineralized water flows to the demineralized water tank through the demineralized water discharge pipe 9.
[0027] f. The oxygen escapes from the oxygen discharge pipe 4 at the top of the container 6.
[0028] g. The impurities in the container 6 are regularly discharged from the vent pipe 11 at the bottom of the container 6.
Claims
1. A boiler deaerator steam recovery device, characterized in that: The invention comprises a desalted water inlet pipe (1), a desalted water spray pipe (3), an oxygen discharge pipe (4), a container (6), a steam inlet pipe (8), a desalted water discharge pipe (9) and a vent pipe (11). The top of the container (6) is connected to the oxygen discharge pipe (4), the bottom of the container (6) is connected to the vent pipe (11), the upper part of the container (6) is connected to the desalted water inlet pipe (1), the lower part of the container (6) is connected to the desalted water discharge pipe (9), the middle part of the container (6) is connected to the steam inlet pipe (8), the desalted water spray pipe (3) is arranged inside the container (6), the desalted water spray pipe (3) is connected to the desalted water inlet pipe (1) at the upper part of the container (6), and the desalted water spray pipe (3) is provided with a water outlet hole (12) facing downward.
2. A boiler deaerator steam recovery device according to claim 1, characterized in that: The desalted water spraying pipe (3) is an annular pipe, the size of which matches the container (6).
3. A boiler deaerator steam recovery and utilization device according to claim 2, characterized in that: The desalted water spray pipe (3) has three water outlet holes (12) facing downward, the middle water outlet hole (12) is located directly above the extension line of the steam inlet pipe (8), and the angles between the water outlet holes (12) on both sides and the middle water outlet hole (12) are both 30 degrees.
4. A boiler deaerator steam recovery and utilization device according to claim 1, characterized in that: The desalted water inlet pipe (1) is provided with a desalted water inlet valve (2), the oxygen exhaust pipe (4) is provided with an oxygen exhaust valve (5), the steam inlet pipe (8) is provided with a steam inlet valve (7), and the exhaust pipe (11) is provided with an exhaust pipe valve (10).
5. A boiler deaerator steam recovery and utilization device according to claim 1, characterized in that: The distance between the desalted water discharge pipe (9) connected to the lower part of the container (6) and the bottom of the container (6) is ≥50 mm.