Dead steam recovery equipment

Abstract

The utility model discloses dead steam recovery equipment, which relates to the technical field of dead steam recovery and comprises a supply module, a shunting module, a processing module and a pressurizing module, the supply module comprises a first pipeline, a demineralized water tank, a first booster pump, a second pipeline and an ejector; the flow dividing module comprises a steam dividing assembly, a third pipeline and a fourth pipeline. The processing module comprises a dead steam collection reprocessor; a deoxidizing assembly is fixedly mounted in an inner cavity of the dead steam collecting and retreating device; the pressurization module comprises a second pressurization pump. The mixed liquid in the fourth pipeline transmits heat of the mixed liquid to the deoxidizing assembly, the deoxidizing assembly heats the mixed liquid from the third pipeline, the partial pressure of steam on the water surface of the mixed liquid is gradually increased, the partial pressure of dissolved gas is gradually reduced, oxygen dissolved in the mixed liquid continuously escapes, and the deoxidizing effect is achieved. The second booster pump conveys condensate carrying waste heat into a water supply system of the boiler, waste heat recovery in the dead steam deoxygenation process is achieved, energy is saved, and the heat utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust steam recovery, in particular to exhaust steam recovery equipment. Background Art

[0002] Exhaust steam is steam discharged from steam equipment that contains high-temperature condensed water.

[0003] Exhaust steam generally has a lower pressure, higher temperature and relatively high oxygen content. In traditional technology, in order to prevent the oxygen in the exhaust steam from accelerating the corrosion of steam equipment, the exhaust steam is usually discharged directly as exhaust gas, so the heat carried by the exhaust steam causes a lot of waste. Summary of the invention

[0004] In order to overcome the problem of "exhaust steam is discharged as exhaust gas in traditional technology, resulting in heat waste" existing in the traditional solution of the above-mentioned background technology, the utility model provides an exhaust steam recovery device for recovering heat in the exhaust steam while preventing oxygen in the exhaust steam from accelerating equipment corrosion.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a kind of exhaust steam recovery equipment, including a supply module, a diversion module, a processing module and a boosting module; the supply module includes a first pipeline, a desalted water tank, a first boosting pump, a second pipeline and an ejector; the first pipeline is connected to the ejector; the desalted water tank is connected to the first boosting pump, and the first boosting pump is connected to the ejector through the second pipeline; the diversion module includes a steam separation component, a third pipeline and a fourth pipeline; the steam separation component is connected to the ejector; the steam separation component is connected to the third pipeline, and the steam separation component is connected to the fourth pipeline The exhaust steam collecting reprocessor is connected with a pipeline; the processing module includes a waste steam collecting reprocessor and a fifth pipeline; a deoxidation component is fixedly installed in the inner cavity of the waste steam collecting reprocessor; a first inlet and a second inlet are opened on the side wall of the waste steam collecting reprocessor, the first inlet is connected to the third pipeline, and the second inlet is connected to the fourth pipeline; an exhaust port is provided on the top of the waste steam collecting reprocessor, and a drain port is provided at the bottom of the waste steam collecting reprocessor, and the drain port is communicated with the fifth pipeline; the boosting module includes a second boosting pump and a sixth pipeline; the fifth pipeline is connected to the second boosting pump, and the second boosting pump is connected to the sixth pipeline.

[0006] As a further optimization solution of the present invention, the height of the first inlet is greater than the height of the deoxidation component, and the height of the deoxidation component is greater than the height of the second inlet.

[0007] As a further optimization solution of the present utility model, a first flow diversion component is fixedly installed in the inner cavity of the exhaust steam collection and reprocessing unit, and the first flow diversion component is connected to the first inlet.

[0008] As a further optimization solution of the present utility model, a second flow diversion component is fixedly installed in the inner cavity of the exhaust steam collection and reprocessing unit, and the second flow diversion component is connected to the second inlet.

[0009] As a further optimization solution of the utility model, an electric-controlled valve is provided in the exhaust port.

[0010] As a further optimization solution of the present utility model, the electrically controlled valve is connected to the first check valve.

[0011] As a further optimization solution of the present invention, the deoxidation component includes a thermal deoxidizer.

[0012] As a further optimization solution of the present utility model, a plurality of the first boosting pumps are provided, and the plurality of the first boosting pumps are connected in parallel.

[0013] As a further optimization solution of the present utility model, a plurality of second boosting pumps are provided, and the plurality of second boosting pumps are connected in parallel.

[0014] As a further optimization solution of the utility model, desalted water is provided in the desalted water tank.

[0015] In summary, the utility model is beneficial in that: a waste steam recovery device includes a supply module, a diversion module, a processing module and a boosting module; the supply module includes a first pipeline, a desalted water tank, a first boosting pump, a second pipeline and an ejector; the diversion module includes a steam separation component, a third pipeline and a fourth pipeline; the processing module includes a waste steam collection and reprocessing device and a fifth pipeline; the inner cavity of the waste steam collection and reprocessing device is fixedly installed with a deoxidation component; the side wall of the waste steam collection and reprocessing device is provided with a first inlet and a second inlet, the boosting module includes a second boosting pump and a sixth pipeline; the fifth pipeline is connected to the second boosting pump, and the second boosting pump is connected to the sixth pipeline. The mixed liquid in the fourth pipeline transfers its own heat to the deoxidation component, and the deoxidation component heats the mixed liquid from the third pipeline, so that the partial pressure of the steam on the water surface of the mixed liquid gradually increases, while the partial pressure of the dissolved gas gradually decreases, so that the oxygen dissolved in the mixed liquid continuously escapes, and the escaped gas is discharged through the exhaust port at the top of the waste steam collection and reprocessing device to achieve the deoxidation effect. The water molecules in the mixed liquid fall freely to the bottom of the exhaust steam collection and reprocessor cavity and condense into liquid. The second booster pump transports the condensate carrying waste heat into the boiler's water supply system to recover waste heat during the exhaust steam deoxygenation process, saving energy and improving heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the supply module, the diversion module, the processing module and the boosting module;

[0019] Figure 3 It is a schematic diagram of the position and structure of the first inlet, the second inlet, and the deoxidation component;

[0020] Figure 4 It is a schematic diagram of the height of the first inlet, the second inlet, and the deoxidation component;

[0021] Figure 5 It is a schematic diagram of the structure of the first shunt component and the second shunt component.

[0022] Description of reference numerals:

[0023] In the figure, 1, supply module; 11, first pipeline; 12, desalted water tank; 13, first booster pump; 14, second pipeline; 15, ejector; 2, diversion module; 21, steam separation component; 22, third pipeline; 23, fourth pipeline; 3, processing module; 31, exhaust steam collection and reprocessing unit; 3101, first inlet; 3102, second inlet; 3103, deoxygenation component; 3104, first diversion component; 3105, second diversion component; 311, exhaust port; 32, fifth pipeline; 4, booster module; 41, second booster pump; 42, sixth pipeline. DETAILED DESCRIPTION

[0024] Based on the above structural features of the present application, the implementation methods of the present application are further described:

[0025] Reference Figure 1 This embodiment provides an exhaust steam recovery device, including a supply module 1, a diversion module 2, a processing module 3 and a boosting module 4.

[0026] Reference Figures 1-2The supply module 1 includes a first pipeline 11, a desalted water tank 12, a first booster pump 13, a second pipeline 14 and an ejector 15. The ejector 15 is provided with a first feed port, a second feed port and a discharge port. The first pipeline 11 is connected and communicated with the first feed port of the ejector 15 (for example, fixed by welding or flange connection); the desalted water tank 12 is connected and communicated with the first booster pump 13 through a pipeline (for example, fixed by a flange connection), the first booster pump 13 is connected and communicated with the second pipeline 14 (for example, fixed by a flange connection), and the second pipeline 14 is connected and communicated with the second feed port of the ejector 15 (for example, fixed by a flange connection). The first pipeline 11 is connected to the exhaust steam production equipment, such as a boiler. The high-temperature and low-pressure exhaust steam and the desalted water at room temperature are mixed in the ejector 15 to obtain a mixed liquid, and the ejector 15 pressurizes the mixed liquid and transports the mixed liquid into the diversion module 2 to achieve preheating of the functional substances in the desalted water.

[0027] Reference Figures 1-2 , the flow splitting module 2 includes a steam splitting component 21, a third pipeline 22 and a fourth pipeline 23; the steam splitting component 21 is connected to the ejector 15 (for example, connected and fixed by a flange); the steam splitting component 21 is connected to the third pipeline 22 (for example, connected and fixed by a flange), and the steam splitting component 21 is connected to the fourth pipeline 23 (for example, connected and fixed by a flange). The steam splitting component 21 transports a part of the mixed liquid into the third pipeline 22, and transports another part of the mixed liquid into the fourth pipeline 23. Most of the mixed liquid flows into the third pipeline 22, and a small part of the mixed liquid flows into the fourth pipeline 23. For example, the splitting ratio of the steam splitting component 21 is 60:40 to 95:5.

[0028] Reference Figures 1-2 The processing module 3 includes a waste steam collection and reprocessing device 31 and a fifth pipeline 32; the waste steam collection and reprocessing device 31 is a water tank-shaped structure. A deoxidation component 3103 is fixedly installed in the inner cavity of the waste steam collection and reprocessing device 31 (for example, fixedly connected by bolts on the inner wall of the waste steam collection and reprocessing device 31); a first inlet 3101 and a second inlet 3102 are opened on the side wall of the waste steam collection and reprocessing device 31, the first inlet 3101 is connected to the third pipeline 22 (for example, connected and fixed by a flange), and the second inlet 3102 is connected to the fourth pipeline 23 (for example, connected and fixed by a flange); an exhaust port 311 is provided at the top of the waste steam collection and reprocessing device 31, and a drain port is provided at the bottom of the waste steam collection and reprocessing device 31, and the drain port is connected to the fifth pipeline 32 (for example, connected and fixed by a flange).

[0029] Reference Figures 2 to 5, the height of the first inlet 3101 is greater than the height of the deaerator component 3103, that is, H1>H2. The height of the deaerator component 3103 is greater than the height of the second inlet 3102, that is, H2>H3. A first diverter component 3104 is fixedly installed in the inner cavity of the exhaust steam collection and reprocessor 31, and the first diverter component 3104 is connected to the first inlet 3101. The first diverter component 3104, for example, adopts a first diverter pipe, which is connected to the first inlet 3101. The first diverter pipe is horizontally fixedly installed on the side wall of the exhaust steam collection and reprocessor 31 (for example, bolted and fixed), and the first diverter pipe is placed above the deaerator component 3103. A first diverter hole is provided on the lower surface of the first diverter pipe, and the mixed liquid is discharged through the first diverter hole to form water mist or a small water flow. The layout direction of the first diverter pipe is adapted to the cross section of the inner cavity of the exhaust steam collection and reprocessor 31. For example, if the cross section of the inner cavity of the exhaust steam collection and reprocessor 31 is circular, the first diverter pipe is arranged in a ring shape close to the inner wall of the exhaust steam collection and reprocessor 31. A second diverter assembly 3105 is fixedly installed in the inner cavity of the exhaust steam collection and reprocessor 31, and the second diverter assembly 3105 is connected to the second inlet 3102. The second diverter assembly 3105, for example, adopts a second diverter pipe, which is connected to the second inlet 3102. The second diverter pipe is horizontally fixedly installed on the side wall of the exhaust steam collection and reprocessor 31 (for example, fixedly connected by bolts), and the second diverter pipe is placed below the deoxygenation assembly 3103. A second diverter hole is provided on the upper surface of the second diverter pipe, and the mixed liquid is discharged through the second diverter hole to form water mist or a small water flow. The layout direction of the second diverter pipe is adapted to the cross-section of the inner cavity of the exhaust steam collection and reprocessor 31. For example, if the cross-section of the inner cavity of the exhaust steam collection and reprocessor 31 is circular, the second diverter pipe is arranged in a ring shape close to the inner wall of the exhaust steam collection and reprocessor 31.

[0030] Reference Figures 2 to 5 , the mixed liquid in the fourth pipe 23 flows from bottom to top through the second inlet 3102 and the second diverter pipe to the deoxygenation component 3103, and at the same time transfers its own heat to the deoxygenation component 3103. The mixed liquid in the third pipe 22 flows from top to bottom through the first inlet 3101 and the second diverter pipe to the deoxygenation component 3103. The deoxygenation component 3103 heats the mixed liquid from the third pipe 22, so that the partial pressure of the steam on the water surface of the mixed liquid gradually increases, while the partial pressure of the dissolved gas gradually decreases, so that the oxygen (and other gases) dissolved in the mixed liquid continuously escapes, and the escaped gas is discharged through the exhaust port 311 at the top of the exhaust steam collection and reprocessor 31, achieving the deoxygenation effect. The water molecules in the mixed liquid fall freely at the bottom of the inner cavity of the exhaust steam collection and reprocessor 31 and condense into liquid. The condensed water molecules carry waste heat themselves.

[0031] Reference Figure 2An electric control valve is provided in the exhaust port 311, and the electric control valve is connected to the first check valve. Both the electric control valve and the first check valve are used to prevent external gas from entering the inner cavity of the exhaust steam collection and reprocessing unit 31, so as to ensure that the deoxygenation operation is not affected.

[0032] A liquid level sensor is provided at the bottom of the inner cavity of the exhaust steam collection reprocessor 31, and the liquid level sensor is electrically connected to the peripheral control module.

[0033] Reference Figure 1 and 2 The boosting module 4 includes a second boosting pump 41 and a sixth pipe 42; the fifth pipe 32 is connected to the second boosting pump 41 (for example, connected and fixed by a flange), and the second boosting pump 41 is connected to the sixth pipe 42 (for example, connected and fixed by a flange). The condensate condensed and gathered at the bottom of the inner cavity of the exhaust steam collection and reprocessing device 31 flows into the second boosting pump 41 through the drain port and the fifth pipe 32, and the sixth pipe 42 is connected to the boiler water supply system. The second boosting pump 41 transports the condensate carrying waste heat into the boiler water supply system through the sixth pipe 42, so as to realize the recovery of waste heat in the exhaust steam deoxygenation process, save energy, and improve heat utilization.

[0034] A plurality of first booster pumps 13 are provided, and the plurality of first booster pumps 13 are connected in parallel with each other; a plurality of first booster pumps 13 can increase the supply efficiency of desalted water.

[0035] A plurality of second boosting pumps 41 are provided, and the plurality of second boosting pumps 41 are connected in parallel with each other; a plurality of second boosting pumps 41 can improve the discharge efficiency of the condensate.

[0036] Second check valves are respectively provided at both ends of the second boosting pump 41 , and the second check valves are used to prevent the condensate from flowing back.

[0037] Desalted water is provided in the desalted water tank 12. The specific composition of the desalted water is conventional prior art in the industry and will not be described in detail. The steam separation component 21, for example, adopts an electrically controlled diverter valve, and the specific structure of the electrically controlled diverter valve is conventional prior art in the industry and will not be described in detail. The deoxygenation component 3103, for example, adopts a thermal deaerator connected to an external power supply, and the specific structure of the thermal deaerator is conventional prior art in the industry and will not be described in detail. The specific structure of the liquid level sensor is conventional prior art in the industry and will not be described in detail.

[0038] The first boost pump 13, the steam separation assembly 21, the second boost pump 41, the liquid level sensor, and the electric control valve are all electrically connected to an external control module, such as a computer, which is used to adjust and control the working state of the utility model.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principle and spirit of the present invention, the changes, modifications, replacements and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. An exhaust steam recovery device, characterized in that: It comprises a supply module (1), a flow distribution module (2), a processing module (3) and a pressure boosting module (4); The supply module (1) comprises a first pipeline (11), a desalted water tank (12), a first booster pump (13), a second pipeline (14) and an ejector (15); the first pipeline (11) is connected to the ejector (15); the desalted water tank (12) is connected to the first booster pump (13), and the first booster pump (13) is connected to the ejector (15) via the second pipeline (14); The flow splitting module (2) comprises a steam splitting component (21), a third pipeline (22) and a fourth pipeline (23); the steam splitting component (21) is connected to the ejector (15); the steam splitting component (21) is connected to the third pipeline (22), and the steam splitting component (21) is connected to the fourth pipeline (23); The processing module (3) comprises an exhaust steam collection and reprocessing unit (31) and a fifth pipeline (32); a deoxidation component (3103) is fixedly installed in the inner cavity of the exhaust steam collection and reprocessing unit (31); a first inlet (3101) and a second inlet (3102) are provided on the side wall of the exhaust steam collection and reprocessing unit (31); the first inlet (3101) is connected to the third pipeline (22), and the second inlet (3102) is connected to the fourth pipeline (23); an exhaust port (311) is provided at the top of the exhaust steam collection and reprocessing unit (31), and a drain port is provided at the bottom of the exhaust steam collection and reprocessing unit (31), and the drain port is connected to the fifth pipeline (32); The boosting module (4) comprises a second boosting pump (41) and a sixth pipeline (42); the fifth pipeline (32) is connected to the second boosting pump (41), and the second boosting pump (41) is connected to the sixth pipeline (42).

2. The exhaust steam recovery equipment according to claim 1, characterized in that: The height of the first inlet (3101) is greater than the height of the deoxygenation component (3103), and the height of the deoxygenation component (3103) is greater than the height of the second inlet (3102).

3. The exhaust steam recovery equipment according to claim 2, characterized in that: A first flow diversion component (3104) is fixedly installed in the inner cavity of the exhaust steam collection and reprocessing unit (31), and the first flow diversion component (3104) is in communication with the first inlet (3101).

4. The exhaust steam recovery equipment according to claim 3, characterized in that: A second flow diversion component (3105) is fixedly installed in the inner cavity of the exhaust steam collection and reprocessing unit (31), and the second flow diversion component (3105) is in communication with the second inlet (3102).

5. The exhaust steam recovery equipment according to claim 4, characterized in that: An electric control valve is provided in the exhaust port (311).

6. The exhaust steam recovery equipment according to claim 5, characterized in that: The electrically controlled valve is connected to the first check valve.

7. The exhaust steam recovery equipment according to claim 6, characterized in that: The deoxygenation component (3103) includes a thermal deaerator.

8. The exhaust steam recovery equipment according to claim 1, characterized in that: A plurality of the first boosting pumps (13) are provided, and the plurality of the first boosting pumps (13) are connected in parallel with each other.

9. The exhaust steam recovery equipment according to claim 1, characterized in that: A plurality of the second boosting pumps (41) are provided, and the plurality of the second boosting pumps (41) are connected in parallel with each other.

10. The exhaust steam recovery equipment according to any one of claims 1 to 9, characterized in that: The desalted water tank (12) is provided with desalted water.

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