Steam production waste heat recovery device

Abstract

The utility model discloses a steam production waste heat recovery device which comprises a device body, the device body is connected with a boiler through an input pipeline, the input pipeline is connected with a condensation pipe, the interior of the device body is hollowed out and provided with a condensation water tank, the tail end of the condensation pipe is connected with an output pipeline, and the whole condensation pipe is fixedly arranged in the device body. The device main body is connected with a water inlet pipe and a water outlet pipe and is communicated with the condensate water tank; a high-temperature waste gas cooling method is improved into a surface desuperheater, a circulating water system of the surface desuperheater is connected into a hot water pipe system, domestic water is heated through heat exchange of waste heat of the high-temperature waste gas, the structural design of the surface desuperheater is improved, and a novel circulating water filtering method is provided. The defect that accumulated water scales are difficult to clean is overcome, and efficient utilization of energy is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steam production technical field, concretely relates to a steam production waste heat recovery device. BACKGROUND

[0002] In the present power production structure of our country, the proportion of fire power generation is about 50%, and the core stage of fire power generation is steam production using boiler technology. In the process of steam production, a large amount of waste heat is generated, including high-temperature exhaust gas waste heat, cooling medium waste heat, waste steam and waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas, waste liquid and waste material waste heat, and high-pressure fluid residual pressure, etc. Improving waste heat recovery capacity is conducive to environmental protection and improving energy utilization efficiency.

[0003] For the utilization of high-temperature exhaust gas waste heat, Chinese patent CN219531712U discloses a steam recovery device for steam production, which comprises a water tank, a water tank bottom surface fixedly installed with an inclined support column, and a water tank top provided with a water spraying device. The water spraying device comprises a water pump, a water tank water injection column cylinder and a water spraying pipe, one end of the water spraying pipe is provided with a steam recovery device, and the steam recovery device comprises a recovery tank, a cover plate, a recovery tank base, three support columns, a support base, a fixed block, a connecting rod and a pressure gauge. The steam recovery device for steam production can collect the heat generated by steam spraying in a waste heat collector, connect the waste heat collector with the heating tank through a heating tank connecting cylinder, utilize the heat generated by steam, and avoid wasting a large amount of energy by spraying cooling water from the water spraying pipe into the recovery tank to generate heat.

[0004] For the above prior art, the inventors believe that the following defects exist: the method of spraying water to cool the steam effectively utilizes the waste heat, but also causes a large amount of water resource waste. This water spraying method is generally used only for large boilers, and the effect of treating high-temperature exhaust gas is not good, and the device needs to be disassembled and reinstalled in summer when heating is not needed, which is too cumbersome. Therefore, a new high-temperature exhaust gas treatment scheme needs to be provided. UTILITY MODEL CONTENTS

[0005] To solve the problems in the above background art, the utility model provides a steam production waste heat recovery device, which has the characteristics of improving energy utilization efficiency, being simple to operate, not needing frequent disassembly, and not accumulating water scale.

[0006] In order to at least achieve one of the above purposes, the utility model adopts the following technical scheme:

[0007] The utility model provides a steam production waste heat recovery device, including device main part, boiler, device main part is connected with boiler through input pipeline, the input pipeline is connected with condenser pipe, the inside hollow of device main part is equipped with condensate tank, the tail end of condenser pipe is connected with output pipeline, and the whole fixed setting of condenser pipe is in the inside device main part, device main part is connected with water inlet pipe, water outlet pipe and with condensate tank is through, and the connecting part of water inlet pipe, water outlet pipe is integrally connected with water pump, and output pipeline is connected with tail gas treatment device, the shape of condenser pipe is balloon shaped pipeline.

[0008] Further, the first, second and third partition plates are arranged in the device main body, dividing the condensate tank into four parts, the height of the first partition plate is greater than that of the second partition plate, and the height of the second partition plate is greater than that of the third partition plate, and the first partition plate is close to the water inlet pipe side; the first, second and third partition plates are respectively provided with first, second and third connecting pipes, and the two ends of the first, second and third connecting pipes are detachably connected with adsorption filters.

[0009] Further, the adsorption filters are attached with anode assemblies for forming scale of calcium and magnesium ions and adsorbing on the filter screen of the adsorption filters; water level sensors are arranged above the first, second and third partition plates, and an indicator light is arranged on the outside of the device main body, and the indicator light is electrically connected with the water level sensors.

[0010] Further, the condenser pipe is coiled in a U shape.

[0011] Further, the condenser pipe is coiled in a disc shape.

[0012] Further, the total length of the condenser pipe is 1-5m, which can be any value or range in the above numerical range, such as 1, 1.5, 1.7, 2, 3, 4.2, 4.8, 5m, etc., or 1-1.5, 1.4-2.5, 1-3, 1-3.5, 2-5m, etc.

[0013] Further, the output pipeline is connected with the tail gas treatment device.

[0014] Further, the water inlet pipe and the water outlet pipe are connected with the domestic water system.

[0015] Further, the device main body is provided with a pressure gauge to monitor the pressure in the condensate tank.

[0016] Further, the water pump is integrally connected with the water inlet pipe connection part to accelerate the heat exchange efficiency.

[0017] Further, the device body is provided with a pressure relief valve.

[0018] Further, the first partition plate, the second partition plate and the third partition plate are connected with the first connecting pipe, the second connecting pipe and the third connecting pipe through fixing members.

[0019] Further, the output pipeline is connected with a low-temperature steam power generation device, which includes but is not limited to an organic Rankine cycle device and a cold end waste heat recovery device.

[0020] The beneficial effects of the present application compared with the prior art are as follows:

[0021] 1. The high-temperature waste gas cooling method is improved to a surface desuperheater, and the circulating water system of the surface desuperheater is connected to a hot water pipe system, so that the heat exchange of the high-temperature waste gas waste heat is used to heat domestic water, which not only avoids the waste of condensate water, but also does not need to be repeatedly disassembled, and the operation is simple and the land occupation is small.

[0022] 2. The structure of the surface desuperheater (condensing pipe) is improved, and the surface desuperheater is designed as a balloon pipeline, so that the heat exchange area is further increased and the device volume is reduced.

[0023] 3. In the actual application process, scale is easily accumulated in the device and is difficult to clean, which causes the water quality to decrease, so a plurality of partition plates are arranged in the condensate tank to divide the condensate tank into a plurality of tank bodies, the heights of the partition plates are lowered in sequence, and the partition plates are connected through connecting pipes, so that the circulating water flows from high to low through the connecting pipes by using the principle of communicating vessels or siphon effect, and the high-speed flow of the circulating water is realized by cooperating with the water pump, so that the tank bodies are free of accumulation and deposition, and the principle of computational fluid dynamics is met.

[0024] 4. In order to remove scale, detachable adsorption filters are arranged at both ends of the connecting pipes, anode assemblies are attached in the adsorption filters, the anode assemblies are electrified during use, calcium and magnesium ions are caused to form scale in advance and are adsorbed on the filter screens of the adsorption filters, when the scale accumulated on the filter screens of a tank body reaches a certain amount and blocks the filter screen, the water level in the tank body rises and exceeds the partition plate, water level sensors are arranged on the upper portions of the partition plates, the sensors are triggered and the indicator lights are turned on at this time, and the staff is reminded to replace the adsorption filter.

[0025] 5. In order to adapt to the above improvement, the device is designed with many adaptive designs, such as a water pump, a pressure gauge and a pressure relief valve. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the present application;

[0027] Figure 2It is a sectional view of the device main body in the embodiment 1 of the utility model;

[0028] Figure 3 It is a schematic view of the adsorption filter in the embodiment 1 of the utility model;

[0029] Figure 4 It is a schematic view of the condenser pipe in the embodiment 1 of the utility model;

[0030] Figure 5 It is a schematic view of the embodiment 2 of the utility model;

[0031] Figure 6 It is a side schematic view of the embodiment 2 of the utility model;

[0032] The components in the figure are marked as follows: 1, device main body; 2, boiler; 3, input pipeline; 4, condenser pipe; 5, output pipeline; 6, condensate tank; 7, water inlet pipe; 8, water outlet pipe; 9, tail gas treatment device; 10, water pump; 11, first partition plate; 12, second partition plate; 13, third partition plate; 14, first connecting pipe; 15, second connecting pipe; 16, third connecting pipe; 17, adsorption filter; 18, anode assembly; 19, water level sensor; 20, indicator lamp; 21, pressure gauge; 22, pressure relief valve; 23, fixing member. DETAILED DESCRIPTION

[0033] The technical scheme of the utility model will be further described below in combination with the drawings, and the advantages and characteristics of the utility model will become more clear with the description. However, it should be understood that the embodiments are only exemplary and do not limit the scope of the utility model.

[0034] It should be noted that the terms "upper", "lower", "front", "back" and the like in the claims and the description of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and do not necessarily mean that the device or component referred to must have a particular orientation, be constructed or operated in a particular orientation.

[0035] In the utility model, unless otherwise explicitly specified and limited, the terms "fixed", "connected" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] Embodiment 1:

[0037] Please refer to Figures 1 to 4The utility model provides a steam production waste heat recovery device, it includes device main body 1, boiler 2, device main body 1 is connected with boiler 2 through input pipeline 3, and input pipeline 3 is connected with condenser pipe 4, and device main body 1 is hollow inside and is provided with condensate tank 6, and the tail end of condenser pipe 4 is connected with output pipeline 5, and condenser pipe 4 is fixedly arranged inside device main body 1 as a whole;Device main body 1 is connected with water inlet pipe 7, water outlet pipe 8 and is penetrated with condensate tank 6.

[0038] In the embodiment, the shape of the condenser pipe 4 is a balloon-shaped pipe. This design is used to increase the heat exchange area, increase the exchange efficiency, and reduce the volume of the device main body 1.

[0039] The output pipeline 5 is connected with a tail gas treatment device 9, the water inlet pipe 7 and the water outlet pipe 8 are connected with a domestic water system, the device main body 1 is provided with a pressure gauge 21 to monitor the pressure in the condensate tank 6, and the device main body 1 is provided with a pressure relief valve 22. The water inlet pipe 7 is integrally connected with a water pump 10 at the connection part, which is used to speed up the heat exchange efficiency.

[0040] The surface desuperheater is a method for adjusting the temperature of steam, especially suitable for small capacity boilers. It adds longitudinal cooling pipes on the path of steam transversely passing, and cooling water flows in the cooling pipes and washes the pipe wall, which exchanges heat with the steam outside the pipe to reduce the steam temperature. The adjustment range of the surface desuperheater is relatively small, but its inertia is also small, which can quickly respond to the change of steam temperature. The circulating water system of the surface desuperheater is connected to the hot water pipe system in the utility model, and the high-temperature waste gas waste heat is used to directly heat domestic water, which not only avoids the waste of condensate water, but also does not need to be repeatedly disassembled. The structure of the condenser pipe is improved in the utility model, which is designed as a balloon pipe, further increasing the heat exchange area and reducing the device volume.

[0041] In addition, the output pipeline 5 is connected with a low-temperature steam power generation device, which includes but is not limited to an organic Rankine cycle device and a cold-end waste heat recovery device.

[0042] In actual use, scale often accumulates, which is not convenient to clean, so a new circulating water filtration structure is proposed.

[0043] A first partition plate 11, a second partition plate 12 and a third partition plate 13 are arranged in the device main body 1 to divide the condensate tank 6 into four parts. The height of the first partition plate 11 is greater than that of the second partition plate 12, and the height of the second partition plate 12 is greater than that of the third partition plate 13. The first partition plate 11 is close to the water inlet pipe 7.

[0044] The first connecting pipe 14, the second connecting pipe 15 and the third connecting pipe 16 are detachably connected with the adsorption filter 17 at two ends.

[0045] It should be noted that the height of the partition plate is gradually reduced and connected through the connecting pipe, and the circulating water can flow from high to low through the connecting pipe by using the principle of communicating vessel or siphon effect, and cooperating with the water pump 10, the high-speed flow of the circulating water is realized, so that the condensate tank 6 does not accumulate sediment, which meets the principle of computational fluid dynamics.

[0046] It should be further noted that the anode assembly 18 is attached in the adsorption filter 17, and the water level sensor 19 is arranged above the first partition plate 11, the second partition plate 12 and the third partition plate 13, and the indicator lamp 20 is arranged outside the device body 1 and is electrically connected with the water level sensor 19.

[0047] When the anode assembly 18 is powered, the calcium and magnesium ions are formed into scale in advance and adsorbed on the filter screen of the adsorption filter 17 by this method. When the scale accumulated on the filter screen in a certain tank body reaches a certain amount and blocks the filter screen, the water level in the tank body rises and exceeds the next partition plate, and the water level sensor 19 is arranged on the upper part of the partition plate, at this time, the water level sensor 19 is triggered, and the indicator lamp 20 is turned on, reminding the staff to replace the adsorption filter 17.

[0048] In the embodiment, the total length of the condensing pipe 4 is 3m, and the condensing pipe 4 is coiled in a U-shaped disc, in another embodiment of the utility model, the condensing pipe 4 is coiled in a disc, which can also increase the contact area.

[0049] In addition, in the embodiment, the first partition plate 11, the second partition plate 12 and the third partition plate 13 are connected with the first connecting pipe 14, the second connecting pipe 15 and the third connecting pipe 16 through the fixing piece 23.

[0050] Embodiment 2:

[0051] Please refer to Figures 5 to 6 In the embodiment, the condensing pipe 4 does not adopt a balloon-shaped pipeline, so the length of the pipeline is increased.

[0052] The use method of the utility model:

[0053] In use, only need to connect domestic water or other water pipe system through the inlet pipe 7, outlet pipe 8 into the device, and the boiler 2 exhaust pipe into the input pipeline 3, in the production process, by observing the pressure gauge 21 on the device main body 1, or set up alarm system, when a certain value through the pressure relief valve 22 pressure relief, or by operating the water pump 10 to control the flow rate of condensate. In addition, the staff in the indicator light 20 when the new adsorption filter 17 replacement, can effectively clean the scale.

[0054] The above only for the preferred embodiments of the present application and is not intended to limit the present application, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A steam production waste heat recovery device comprising a device body (1), a boiler (2), characterized in that: The device body (1) is connected with the boiler (2) through an input pipeline (3), the input pipeline (3) is connected with a condensing pipeline (4), the device body (1) is hollow inside and is provided with a condensate tank (6), the condensing pipeline (4) is connected with an output pipeline (5) at the end, and the condensing pipeline (4) is fixedly arranged inside the device body (1) as a whole. The device body (1) is connected with a water inlet pipe (7) and a water outlet pipe (8) and communicates with the condensate tank (6), the water inlet pipe (7) and the water outlet pipe (8) are integrally connected with a water pump (10) at the connecting position, and the output pipeline (5) is connected with a tail gas treatment device (9). The condensing pipeline (4) is in the shape of a balloon-shaped pipeline.

2. The steam production waste heat recovery device of claim 1, wherein: The device body (1) is provided with a first partition plate (11), a second partition plate (12) and a third partition plate (13), so that the condensate tank (6) is divided into four parts, the height of the first partition plate (11) is greater than the height of the second partition plate (12), the height of the second partition plate (12) is greater than the height of the third partition plate (13), and the first partition plate (11) is close to the side of the water inlet pipe (7). The first partition plate (11), the second partition plate (12) and the third partition plate (13) are respectively provided with a first connecting pipe (14), a second connecting pipe (15) and a third connecting pipe (16), and both ends of the first connecting pipe (14), the second connecting pipe (15) and the third connecting pipe (16) are detachably connected with an adsorption filter (17).

3. The steam production waste heat recovery device of claim 2, wherein: The adsorption filter (17) is attached with an anode assembly (18) inside. The first partition plate (11), the second partition plate (12) and the third partition plate (13) are all provided with a water level sensor (19) above, the device body (1) is provided with an indicator light (20) outside, and the indicator light (20) is electrically connected with the water level sensor (19).

4. The steam production waste heat recovery device of claim 3, wherein: The condensing pipeline (4) is in the shape of a U-shaped coil.

5. The steam production waste heat recovery device of claim 3, wherein: The condensing pipeline (4) is in the shape of a disc-shaped coil.

6. The steam production waste heat recovery device of claim 3, wherein: The device body (1) is provided with a pressure gauge (21) to monitor the pressure in the condensate tank (6).

7. The steam production waste heat recovery device of claim 3, wherein: The device body (1) is provided with a pressure relief valve (22).

8. The steam production waste heat recovery device of claim 3, wherein: The water inlet pipe (7) and the water outlet pipe (8) are connected with a domestic water system.

9. The steam production waste heat recovery device of claim 3, wherein: The first partition plate (11), the second partition plate (12) and the third partition plate (13) are connected with the first connecting pipe (14), the second connecting pipe (15) and the third connecting pipe (16) through a fixing piece (23).

10. The steam production waste heat recovery device of claim 3, wherein: The output pipeline (5) is connected with a low-temperature steam power generation device.

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