Boiler deaerator exhaust steam recycling device

Abstract

The utility model provides a kind of boiler oxygen-removing device exhaust steam recycling device, including shell, recovery pipeline, three-way valve, serpentine duct, water purifier;Wherein, the shell is equipped with oxygen-removing device main body, and is equipped with the exhaust port for discharging the exhaust steam generated by the oxygen-removing device main body, the exhaust port is connected by recovery pipeline with the serpentine duct in water purifier, recovery pipeline is also equipped with three-way valve, the three-way valve is connected with external methanol condensate return pipe.The high-temperature exhaust steam generated by oxygen-removing device is recycled by recovery pipeline, and the high-temperature exhaust steam after recycling can heat the purified water in water purifier by serpentine duct, so that the heat energy in high-temperature exhaust steam is effectively utilized.Oxygen-removing device can use heated purified water, thereby effectively reducing the energy consumption of oxygen-removing device.When oxygen-removing device needs to change oxygen-removing mode, methanol gas generated by oxygen-removing device can be sent into methanol recovery equipment by recovery pipeline, avoiding changing the original structure of oxygen-removing device.

Description

Technical Field

[0001] This utility model relates to a recycling device, particularly a boiler deaerator exhaust steam recycling device, which belongs to the field of environmental protection technology. Background Technology

[0002] Currently, deoxygenation of boiler feedwater in power plants is broadly categorized into three methods: thermal deoxygenation, vacuum deoxygenation, and chemical deoxygenation. Thermal deoxygenation is the most commonly used method in the industry, involving heating the feedwater with high-temperature steam, causing oxygen and non-condensable gases escaping from the water surface to be discharged into the atmosphere through the exhaust valve. Under normal operating conditions, to ensure acceptable oxygen levels, the exhaust valve needs to be kept open to continuously discharge oxygen and some non-condensable gases, along with a small amount of steam carried away; this discharged gas is called exhaust steam. During normal operation, because the deaerator exhaust valve is constantly open, the corresponding amount of high-heat exhaust steam discharged increases with increases in makeup water and steam intake. Existing equipment lacks the ability to recover exhaust steam, resulting not only in wasted heat energy but also in the potential for thermal pollution and significant noise pollution, severely impacting the normal lives of residents in the plant area and surrounding regions. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0003] To address the problem of waste heat energy in existing boiler deaerators due to the inability to recover waste steam, this invention provides a boiler deaerator waste steam recovery and utilization device.

[0004] This utility model is achieved through the following technical solution: a boiler deaerator exhaust steam recovery and utilization device, comprising a shell, a recovery pipeline, a three-way valve, a serpentine pipeline, and a water purifier;

[0005] The housing contains a deaerator body and an exhaust port for discharging the exhaust steam generated by the deaerator body. The exhaust port is connected to a serpentine pipe inside the water purifier via a recovery pipe. The recovery pipe is also equipped with a three-way valve, which is connected to an external methanol condensate return water pipe. This allows the high-temperature exhaust steam generated by the deaerator to be recovered through the recovery pipe. The recovered high-temperature exhaust steam can then be used to heat the purified water in the water purifier via the serpentine pipe, thereby effectively utilizing the heat energy in the high-temperature exhaust steam and reducing energy consumption.

[0006] Furthermore, the inlet end of the recovery pipe is connected to the exhaust port, the outlet end of the recovery pipe passes through the water purifier housing and is connected to the inlet end of the serpentine pipe located in the coagulation chamber inside the water purifier, and the outlet end of the serpentine pipe passes through the water purifier housing and is connected to the external atmospheric environment, so that the high-temperature exhaust steam can heat the purified water in the coagulation chamber of the water purifier, and the heated exhaust steam is directly discharged into the atmosphere.

[0007] Furthermore, the first and second connectors of the three-way valve are connected to the recovery pipes on both sides of the valve, and the third connector of the three-way valve is connected to the external methanol condensate return water pipe. When the deaerator needs to change its deoxygenation method, the methanol gas generated by the deaerator can be sent to the methanol recovery equipment through the recovery pipe, thus avoiding any changes to the original structure of the deaerator.

[0008] Furthermore, a control valve is provided on the methanol condensate return water pipe to close the methanol condensate return water pipe during exhaust steam recovery.

[0009] Furthermore, the housing is provided with inlet and outlet water ports, wherein the inlet water port is connected to the water purifier and the outlet water port is connected to the subsequent water-using equipment, so that the deaerator can use heated purified water, thereby effectively reducing the energy consumption of the deaerator.

[0010] Furthermore, the exhaust port is also connected to a vent pipe with a valve on it so that the exhaust steam can be directly discharged into the atmosphere when needed.

[0011] This invention has the following advantages and effects: Using the above solution, the high-temperature exhaust steam generated by the deaerator is recovered through a recovery pipeline. The recovered high-temperature exhaust steam can then be used to heat the purified water in the water purifier through a serpentine pipeline, thus effectively utilizing the heat energy in the high-temperature exhaust steam. The deaerator can use the heated purified water, thereby effectively reducing the energy consumption of the deaerator. When the deaerator needs to change its deoxygenation method, the methanol gas generated by the deaerator can be sent to a methanol recovery device through the recovery pipe, avoiding any changes to the original structure of the deaerator. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present utility model;

[0013] Figure 2 This is a partial enlarged view of the present utility model. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0015] This utility model provides a boiler deaerator exhaust steam recovery and utilization device, including a shell 5, a recovery pipe 2, a three-way valve 6, a serpentine pipe 9, and a water purifier 1;

[0016] The housing 5 contains a deaerator body and an exhaust port 4 for discharging the exhaust steam generated by the deaerator body. The exhaust port 4 is connected to a serpentine pipe 9 located in the water purifier 1 via a recovery pipe 2. The recovery pipe 2 is also equipped with a three-way valve 6, which is connected to an external methanol condensate return water pipe 8, so that the high-temperature exhaust steam generated by the deaerator can be recovered through the recovery pipe 2. The recovered high-temperature exhaust steam can be used to heat the purified water in the water purifier through the serpentine pipe 9, thereby effectively utilizing the heat energy in the high-temperature exhaust steam and reducing energy consumption.

[0017] As one embodiment, the input end of the recovery pipe 2 is connected to the exhaust port 4, the output end of the recovery pipe 2 passes through the housing of the water purifier 1 and is connected to the input end of the serpentine pipe 9 located in the coagulation chamber inside the water purifier 1, and the output end of the serpentine pipe 9 passes through the water purifier 1 and is connected to the external atmospheric environment, so that the high-temperature exhaust steam can heat the purified water in the coagulation chamber of the water purifier 1, and the heated exhaust steam is directly discharged into the atmosphere.

[0018] As an example, the first and second connectors of the three-way valve 6 are connected to the recovery pipes 2 on both sides of the valve, and the third connector of the three-way valve 6 is connected to the external methanol condensate return water pipe 8. When the deaerator needs to change its deoxygenation method, the methanol gas generated by the deaerator can be sent to the methanol recovery equipment through the recovery pipe 2, thus avoiding changes to the original structure of the deaerator.

[0019] As an example, the methanol condensate return water pipe 8 is equipped with a control valve 7 so as to close the methanol condensate return water pipe 8 when the exhaust steam is recovered and reused.

[0020] As an example, the housing 5 is provided with an inlet and an outlet. The inlet is connected to the water purifier 1, and the outlet is connected to the subsequent water-using equipment, so that the deaerator can use heated purified water, thereby effectively reducing the energy consumption of the deaerator.

[0021] As an example, the exhaust port 4 is also connected to the vent pipe 3 with a valve on it so that the exhaust steam can be directly discharged into the atmosphere when needed.

Claims

1. A boiler deaerator exhaust steam recovery and utilization device, comprising a shell, a recovery pipeline, a three-way valve, a serpentine pipeline, and a water purifier, characterized in that: The housing contains a deaerator body and an exhaust port for discharging the exhaust gas generated by the deaerator body. The exhaust port is connected to a serpentine pipe located in the water purifier via a recovery pipe. The recovery pipe is also equipped with a three-way valve, which is connected to an external methanol condensate return water pipe.

2. The boiler deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that... The inlet of the recycling pipe is connected to the outlet, the outlet of the recycling pipe passes through the housing and is connected to the inlet of the serpentine pipe located in the coagulation chamber inside the water purifier, and the outlet of the serpentine pipe passes through the housing and is connected to the external atmospheric environment.

3. The boiler deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that... The first and second connectors of the three-way valve are connected to the recovery pipes on both sides of the valve, and the third connector of the three-way valve is connected to the external methanol condensate return water pipe.

4. The boiler deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that... A control valve is installed on the methanol condensate return water pipe.

5. The boiler deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that... The housing is provided with an inlet and an outlet, wherein the inlet is connected to the water purifier and the outlet is connected to the subsequent water-using equipment.

6. The boiler deaerator exhaust steam recovery and utilization device according to claim 1, characterized in that... The exhaust port is also connected to a vent pipe with a valve installed on it.

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