System for recycling diffused steam of thermal deaerator of boiler in dry quenching workshop

Abstract

The utility model discloses a system for recycling diffused steam of a thermal deaerator of a boiler in a dry quenching workshop, which comprises a cooling box, a heat exchanger, a steam generator and a steam generator, one end of the collecting pipe is communicated with a diffusing port of the thermal deaerator, and the collecting pipe is used for collecting oxygen-containing steam diffused by the thermal deaerator; the collecting pipe is a coiled pipe and is horizontally arranged; the collecting pipe is immersed in cooling water of the cooling box, and the other end of the collecting pipe extends out of the cooling box and is communicated with external atmosphere; each low bending part of the collecting pipe is communicated with a water accumulating pipe; the water accumulation pipe is used for forming accumulated water after the oxygen-containing steam is cooled by cooling water in the cooling box and discharging the accumulated water out of the cooling box; according to the thermal deaerator, the problem that condensed liquid drops erode and corrode adjacent equipment after steam of the thermal deaerator is diffused can be thoroughly solved; and the effect of saving water is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of coal chemical machinery and equipment, in particular to a system for recovering and utilizing the discharged steam of a thermal deaerator of a boiler in a dry coke quenching workshop. Background Art

[0002] The thermal deaerator is an auxiliary device for the boiler. It uses steam to heat the boiler feed water to the saturation temperature under the atmospheric thermal deaerator pressure (0.018Mpa). At this time, the surface steam pressure is close to the total pressure of the water surface, and the partial pressure of various gases dissolved in the water is close to zero. The feed water does not have the ability to dissolve gases, and the gases dissolved in the water will precipitate, thereby achieving the purpose of removing oxygen and protecting thermal equipment and pipelines.

[0003] Then, during the actual operation of the thermal deaerator, after the steam enters the thermal deaerator coil, it fully exchanges heat with the boiler feed water and enters the vent pipe carrying the oxygen in the water. Because the vent pipe is exposed to the atmosphere, the steam is discharged into the atmosphere. After contacting with the cold air, it condenses into liquid droplets and falls on the ground or nearby equipment and ancillary devices, which not only causes a waste of water resources, but also causes erosion and corrosion to nearby devices. Utility Model Content

[0004] The utility model aims to provide a system for recovering and reusing the steam emitted by the thermal deaerator of the boiler, so as to solve the problem that the condensed liquid droplets after the steam emitted by the thermal deaerator of the existing equipment scour and corrode the adjacent equipment.

[0005] The utility model adopts the following technical scheme: a system for recovering the steam released by the thermal deaerator of the boiler in the dry coke quenching workshop, comprising:

[0006] a cooling box containing cooling water;

[0007] The collecting pipe, one end of which is connected to the discharge port of the thermal deaerator, is used to collect the oxygen-containing steam discharged from the thermal deaerator; the collecting pipe is a serpentine pipe and is arranged horizontally; the collecting pipe is immersed in the cooling water of the cooling box, and the other end of the collecting pipe extends out of the cooling box and is connected to the outside atmosphere; each lower bending part of the collecting pipe is connected to a water accumulation pipe; the water accumulation pipe is used to form water when the oxygen-containing steam is cooled by the cooling water in the cooling box, and discharge it to the outside of the cooling box;

[0008] Among them, the outlet of the cooling box is connected with the first spray pipe through a pipe, the first spray pipe is located above the top opening of the cooling box, the first spray pipe is horizontally arranged, and a plurality of first drainage holes are opened along its lower wall, each first drainage hole is used to spray the cooling water heated by heat exchange in the cooling box into the cooling box through the first drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

[0009] Furthermore, it also includes:

[0010] The recovery box has an inlet connected to each water collection pipe, and an outlet connected to the inlet of the cooling box through a first water pump, and is used to transport the water collected by the water collection pipe to the cooling box for repeated use.

[0011] Furthermore, the outlet of the cooling box is also connected to the second spray pipe through a pipe. The second spray pipe is located above the top opening of the recovery box. The second spray pipe is horizontally arranged, and a plurality of second drainage holes are opened along its lower wall. Each second drainage hole is used to spray the cooling water heated by heat exchange in the cooling box into the recovery box through the second drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can completely solve the problem of erosion and corrosion of adjacent equipment by condensed droplets after steam dissipation from the thermal deaerator; and achieves the effect of saving water;

[0014] The collecting tube of the utility model is a serpentine tube, the purpose of which is to reduce the flow rate of oxygen-containing steam and prolong the contact time between the oxygen-containing steam in the collecting tube and the water in the cooling box to achieve the purpose of sufficient heat exchange;

[0015] The utility model can realize self-cooling of cooling water and realize recycling through the first spray pipe and the second spray pipe;

[0016] After the utility model is installed, the steam of the thermal deaerator is isolated from the cold water in the cooling box through the collecting pipe for heat exchange to form condensate, and the first heat exchange is completed and the steam discharged to the outside is recovered; then the condensate is contacted with the cold air through the second spraying pipe on the top of the recovery box for heat exchange, and the temperature of the condensate drops to complete the second heat exchange; and it is repeatedly recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Among them: 10, cooling box; 11, collecting pipe; 12, thermal deaerator; 13, first spraying pipe; 14, recovery box; 15, second spraying pipe. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. The "direction" in the present utility model is based on the position of the present utility model in the Figure 1 Description of the trend in the state.

[0021] The utility model discloses a system for recovering and reusing the steam released by the thermal deaerator of a boiler, such as Figure 1 As shown, it includes a cooling box 10 and a collecting pipe 11.

[0022] Cooling water is contained in the cooling box 10; one end of the collecting pipe 11 is connected to the discharge port of the thermal deaerator 12, and the collecting pipe 11 is used to collect the oxygen-containing steam discharged from the thermal deaerator 12; the collecting pipe 11 is a serpentine pipe and is arranged horizontally; the collecting pipe 11 is immersed in the cooling water of the cooling box 10, and the other end thereof extends out of the cooling box 10 and is connected to the outside atmosphere; each lower bend of the collecting pipe 11 is connected to a water accumulation pipe; the water accumulation pipe is used to form water when the oxygen-containing steam is cooled by the cooling water in the cooling box 10, and discharge it to the outside of the cooling box 10.

[0023] Among them, the outlet of the cooling box 10 is connected with the first spray pipe 13 through a pipe. The first spray pipe 13 is located above the top opening of the cooling box 10. The first spray pipe 13 is horizontally arranged, and a plurality of first drainage holes are opened along its lower wall. Each first drainage hole is used to spray the cooling water heated by heat exchange in the cooling box 10 into the cooling box 10 through the first drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

[0024] The utility model also includes: a recovery box 14, the inlet of the recovery box 14 is connected to each water collection pipe, and the outlet of the recovery box 14 is connected to the inlet of the cooling box 10 through a first water pump. The recovery box 14 is used to transport the water collected by the water collection pipe to the cooling box 10 for repeated use.

[0025] The outlet of the cooling box 10 is also connected to the second spray pipe 15 through a pipe. The second spray pipe 15 is located above the top opening of the recovery box 14. The second spray pipe 15 is horizontally arranged, and a plurality of second drainage holes are opened along its lower wall. Each second drainage hole is used to spray the cooling water heated by heat exchange in the cooling box 10 into the recovery box 14 through the second drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

[0026] Example 1

[0027] The heating steam of the thermal deaerator of the boiler in the dry coke quenching workshop of a certain factory is released all year round. The utility model is used to improve it. When the temperature of the water in the cooling box reaches above 60°C, the corresponding valve is opened at this time, so that the heated cooling water is sprayed into the cooling box 10 and the recovery box 14 through the first spray pipe 13 and the second spray pipe 15, so as to achieve reuse. When the temperature is lower than 60°C, the valve corresponding to the second spray pipe 15 is closed, so that the water in the cooling box 10 is sprayed into the cooling box 10 through the first spray pipe 13.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for recovering the steam released from the thermal deaerator of the dry coke quenching workshop boiler, characterized in that: include: A cooling box (10) containing cooling water; A collecting pipe (11), one end of which is connected to the discharge port of the thermal deaerator (12) and is used to collect the oxygen-containing steam discharged from the thermal deaerator (12); the collecting pipe (11) is a serpentine pipe and is arranged horizontally; the collecting pipe (11) is immersed in the cooling water of the cooling box (10), and the other end of the collecting pipe (11) extends out of the cooling box (10) and is connected to the outside atmosphere; each lower bending part of the collecting pipe (11) is connected to a water accumulation pipe; the water accumulation pipe is used to accumulate water when the oxygen-containing steam is cooled by the cooling water in the cooling box (10), and discharge it to the outside of the cooling box (10); The outlet of the cooling box (10) is connected to the first spray pipe (13) through a pipeline, the first spray pipe (13) is located above the top opening of the cooling box (10), the first spray pipe (13) is horizontally arranged, and a plurality of first drainage holes are opened along its lower wall, each of the first drainage holes is used to spray the cooling water heated by heat exchange in the cooling box (10) into the cooling box (10) through the first drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

2. The system for recovering the steam released from the thermal deaerator of the dry coke quenching workshop boiler according to claim 1 is characterized in that: Also includes: The recovery box (14) has an inlet connected to each of the water collection pipes, and an outlet connected to the inlet of the cooling box (10) via a first water pump, and is used to transport the water collected by the water collection pipes to the cooling box (10) for repeated use.

3. The system for recovering and utilizing the steam released by the thermal deaerator of the dry coke quenching workshop boiler according to claim 2 is characterized in that: The outlet of the cooling box (10) is also connected to the second spray pipe (15) through a pipeline. The second spray pipe (15) is located above the top opening of the recovery box (14). The second spray pipe (15) is horizontally arranged, and a plurality of second drainage holes are opened along its lower wall. Each of the second drainage holes is used to spray the cooling water heated by heat exchange in the cooling box (10) into the recovery box (14) through the second drainage hole, thereby cooling the heated cooling water and recycling the cooling water.

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