Middle-end steam condensate water condensation recovery and steam-water separation device

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to a middle-end steam condensate water condensation recovery and steam-water separation device. Comprising a drainage condensate water pipeline, a steam condensate water recovery device, a condenser, a steam-water separator, a heat preservation water tank, a high-temperature hot water circulating pump, a softened water tank, a low-temperature hot water circulating pump, a boiler water feeding pump and connecting pipe fittings. According to the steam boiler, steam is output from the boiler, condensate water obtained after heat exchange during drying of heat using equipment is subjected to closed circulation cooling recovery, it can be guaranteed that in the steam and condensate water circulation process, steam condensate water recovery is effectively achieved, and meanwhile the heat efficiency of the steam boiler can be improved. The condensation recovery and steam-water separation technological process system for the middle-end steam condensate water is simple in structure, low in equipment manufacturing cost, convenient to maintain and safe to install and use, production loss of enterprises is reduced, production cost is reduced, and a series of problems of pollution, noise, production, safety, environment and the like are completely eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of condensate recovery, in particular to a mid-end steam condensate recovery and steam-water separation device. Background Art

[0002] The conventional traditional method of recycling and treating the condensed water vapor-water mixture at 85-100°C in various industries after steam heat drying has the following disadvantages:

[0003] The 85-100℃ condensed water-steam mixture after steam drying is directly discharged into the ditch. The feed water used by the steam boiler is heated by new steam to make soft water, or soft water at room temperature is directly used as feed water, resulting in waste of heat and energy, increasing the cost of boiler water softening treatment, insufficient boiler output, affecting enterprise production, and causing environmental pollution.

[0004] The 85-100℃ condensate steam-water mixture after steam drying is sent to the boiler feed water softening tank, causing a large amount of steam to be dispersed into the space, failing to fully reuse the condensate, and increasing the cost of boiler water softening treatment.

[0005] Especially when the boiler room is close to residential areas, residents will mistake it for flue gas, which will cause complaints from residents. If it directly enters the boiler, it will cause the flue gas to be too high, causing the bag filter bags to age at high temperature, shortening the service life of the bags and affecting the dust removal effect.

[0006] The steam-dried 85-100℃ condensed water vapor-water mixture directly enters the water tank, which not only causes the uncondensed steam to leak out, but also increases the cost of boiler water softening treatment. At the same time, due to the high pressure of the multi-stage pump dedicated to recovering condensed water, it will also generate certain noise and impact when entering the boiler feed water softening tank, which has a great impact on the surrounding residents and shortens the service life of the water tank if used for a long time.

[0007] Therefore, it is necessary to transform the condensate process flow to make good use of the waste heat and solve the problems of "steam pollution, noise elimination, energy waste, low waste heat utilization rate, cost reduction, energy saving, and ensuring safe operation of equipment". Utility Model Content

[0008] The purpose of the utility model is to provide a mid-end steam condensate recovery and steam-water separation device to solve the problems of "steam pollution, noise elimination, low waste heat utilization, cost reduction, and how to save energy and ensure safe operation of equipment".

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] The utility model provides a mid-end steam condensate recovery and steam-water separation device, which includes a hydrophobic condensate pipeline, a steam condensate recovery device, a condenser, a steam-water separator, a heat preservation water tank, a high-temperature hot water circulation pump, a soft water tank, a low-temperature hot water circulation pump, a boiler feed pump and various connecting pipe fittings; after the steam source exchanges heat with the heat-using equipment, the waste heat steam and condensate cooled by heat exchange enter the steam condensate recovery device through the hydrophobic condensate pipeline, and the condensate of the steam condensate recovery device is introduced into the condenser through the outlet pipeline for condensation;

[0011] Wherein the condenser includes a container tank and a coil pipe arranged in the container tank; the condensate of the steam condensate recovery device enters the coil pipe, and the internal cavity of the condenser is filled with cooling water for heat exchange;

[0012] The water outlet end of the coil pipe enters the steam-water separator through the pipeline from the condenser to the steam-water separator, and the gas or vapor separated in the steam-water separator is sent into the container tank through the pipeline from the steam-water separator back to the condenser; the cooled liquid separated in the steam-water separator is sent into the heat preservation water tank through the outlet pipeline of the steam-water separator;

[0013] Wherein the cooling water exchanged heat in the container tank is sent into the heat preservation water tank through the outlet pipeline of the condenser;

[0014] The heat-preserved water in the heat preservation water tank is transported to the soft water tank through the outlet pipeline of the high-temperature hot water circulation pump and the high-temperature hot water circulation pump;

[0015] Wherein the water outlet end of the soft water tank is divided into two paths, one path is sent into the container tank of the condenser through the low-temperature hot water circulation pump and the outlet pipeline of the low-temperature hot water circulation pump and serves as cooling water, and the other path is used for transporting to the equipment that produces the steam source through the boiler feed pump and the outlet pipeline of the boiler feed pump.

[0016] Further, the steam source is generated by a steam boiler, and the steam at 150-165°C produced by the steam boiler is transported into the steam distribution cylinder through a steam pipeline, and the steam distribution cylinder is respectively communicated with the heat-using equipment through a plurality of steam pipelines.

[0017] Still further, a blowdown pipe with a boiler blowdown valve is arranged at the bottom of the steam boiler.

[0018] Still further, a heat insulation layer is arranged in the heat preservation water tank, and a heat preservation water tank emptying pipeline is arranged on the heat preservation water tank.

[0019] Still further, the soft water tank is also replenished with water through a water supply pipeline with a make-up water valve.

[0020] Still further, the steam condensate recovery device is a TY series steam condensate recovery device.

[0021] Furthermore, a delivery pump is provided on the outlet pipeline.

[0022] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0023] In this application, the steam output from the boiler and the condensed water after heat exchange during the drying of the heat-using equipment are subjected to closed-loop cooling and recovery, which can ensure that there is no loss or discharge of condensed water and no steam spillage during the flow of steam and condensed water, reducing steam pollution.

[0024] Moreover, it effectively solves the problem of steam condensate recovery, with a recovery rate close to 100%, and at the same time can improve the thermal efficiency of the steam boiler.

[0025] The condensate recovery and steam-water separation process flow system structure of the middle-end steam condensate in this application is simple, the equipment manufacturing cost is low, the maintenance is convenient, the installation and use are safe, reducing the production loss of enterprises, lowering the production cost, and eliminating a series of problems such as pollution, noise, production, safety, and environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present utility model will be further described below in conjunction with the drawings.

[0027] Figure 1 It is a schematic flow diagram of the condensate recovery and steam-water separation device for the middle-end steam condensate of the present utility model.

[0028] Description of the reference numerals in the drawings:

[0029] 1. Steam boiler; 2. Steam distribution cylinder; 3. Steam pipeline; 4. Heat-using equipment; 5. Drainage condensate pipeline; 6. TY series steam condensate recovery device; 7. Outlet pipeline of TY series steam condensate recovery device; 8. Condenser; 9. Outlet pipeline of condenser; 10. Pipeline from condenser to steam-water separator; 11. Pipeline from steam-water separator back to condenser; 12. Steam-water separator; 13. Outlet pipeline of steam-water separator; 14. Drainage pipeline of heat preservation water tank; 15. Heat preservation water tank; 16. High-temperature hot water circulation pump; 17. Outlet pipeline of high-temperature hot water circulation pump; 18. Make-up water valve; 19. Soft water tank; 20. Low-temperature hot water circulation pump; 21. Outlet pipeline of low-temperature hot water circulation pump; 22. Boiler feed pump; 23. Outlet pipeline of boiler feed pump; 24. Boiler blowdown valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] As Figure 1As shown, in this embodiment, a device for condensing and recovering medium-end steam condensate and separating steam and water is disclosed. As shown in the attached drawings, the process flow of condensing and recovering medium-end steam condensate and separating steam and water consists of a steam boiler 1, a steam header 2, a steam pipeline 3, a heat-using device 4, a hydrophobic condensate pipeline 5, a TY series steam condensate recovery device 6, an outlet pipeline of the TY series steam condensate recovery device 7, a condenser 8, an outlet pipeline of the condenser 9, a pipeline from the condenser to the steam-water separator 10, a pipeline from the steam-water separator back to the condenser 11, a steam-water separator 12, an outlet pipeline of the steam-water separator 13, a drainage pipeline of the heat preservation water tank 14, a heat preservation water tank 15, a high-temperature hot water circulation pump 16, an outlet pipeline of the high-temperature hot water circulation pump 17, a make-up water valve 18, a soft water tank 19, a low-temperature hot water circulation pump 20, an outlet pipeline of the low-temperature hot water circulation pump 21, a boiler feed pump 22, an outlet pipeline of the boiler feed pump 23, a boiler blowdown valve 24, etc.

[0031] First, according to the heat consumption capacity of the production status of the corresponding industry system, design, select, manufacture, and purchase the corresponding model, specification, size, drawing standard, etc., and process and configure the steam boiler 1, the steam header 2, the steam pipeline 3, the heat-using device 4, the hydrophobic condensate pipeline 5, the TY series steam condensate recovery device 6, the outlet pipeline of the TY series steam condensate recovery device (the TY series steam condensate recovery device is a borrowed market procurement part) 7, the condenser 8, the outlet pipeline of the condenser 9, the pipeline from the condenser to the steam-water separator 10, the pipeline from the steam-water separator back to the condenser 11, the steam-water separator 12, the outlet pipeline of the steam-water separator 13, the drainage pipeline of the heat preservation water tank 14, the heat preservation water tank 15, the high-temperature hot water circulation pump 16, the outlet pipeline of the high-temperature hot water circulation pump 17, the make-up water valve 18, the soft water tank 19, the low-temperature hot water circulation pump 20, the outlet pipeline of the low-temperature hot water circulation pump 21, the boiler feed pump 22, the outlet pipeline of the boiler feed pump 23, the boiler blowdown valve 24.

[0032] Combined with the attached drawings, the principle of the process flow of condensing and recovering medium-end steam condensate and separating steam and water is described as follows:

[0033] The steam at 150 - 165 °C produced by the steam boiler 1 is transported through the steam pipeline into the steam header 2, and the steam header 2 transports it to each heat-using device 4 through the steam pipeline 3;

[0034] Among them, the 85 - 100 °C condensate produced after the steam exchanges heat when drying products in the heat-using device 4 is centrally collected through the hydrophobic condensate pipeline 5 to the TY series steam condensate recovery device 6;

[0035] Among them, according to the number of heat-using devices 4, N TY series steam condensate recovery devices 6 can be selected to be used in parallel or in series. The 85 - 100 °C condensate collected by the TY series steam condensate recovery device 6 is pumped by multiple stages (considering pumping for long-distance use) and sent into the top inlet of the condenser 8 through its outlet pipeline 7;

[0036] Among them, the condenser 8 is a cylindrical container tank. From the top inlet to the bottom outlet, it is a spring-type coil pipe. The inner cavity of the condenser 8 is filled with cooling water for heat exchange. The cooling water exchanges heat with the condensed water in the spring-type coil pipe, promoting the further condensation and cooling of the condensed water in the spring-type coil pipe. According to the amount of condensed water, N condensers 8 can be selected to be used in parallel or in series. The cooling water at 70 - 80°C for heat exchange in the condenser is sent into the inner cavity of the condenser 8 from the bottom by the low-temperature hot water circulation pump 20 through the outlet pipe 21 of the low-temperature hot water circulation pump;

[0037] The cooling water at 75 - 85°C after heat exchange in the condenser 8 is sent into the heat preservation water tank 15 through the outlet pipe 9 of the condenser. The condensed water at 75 - 85°C that has been condensed and cooled in the condenser is also sent into the top inlet of the steam-water separator 12 through the pipe 10 of the pipeline from the condenser to the steam-water separator;

[0038] The steam-water separator 12 is a cylindrical container tank. There is a porous partition board in the upper middle part of the container tank, which plays a role in damping and promoting the separation of steam and water. After the separation of steam and water, the upper middle part of the container tank is mainly uncondensed steam and insoluble gases, and the lower part is condensed water. According to the amount of condensed water, N steam-water separators 12 can be selected to be used in parallel or in series;

[0039] The uncondensed steam and insoluble gases after passing through the steam-water separator 12 are sent back to the condenser 8 through the top return condenser pipe 11;

[0040] The condensed water at 75 - 85°C after passing through the steam-water separator 12 is sent into the heat preservation water tank 15 through the outlet pipe 13 of the steam-water separator. An exhaust pipe 14 is installed at the top of the heat preservation water 15, and the exhaust pipe 14 is directly discharged into the atmosphere. The function of the exhaust pipe 14 is to discharge insoluble gases and a very small amount of steam that has not been fully condensed. The main function of the heat preservation water tank 15 is to store the condensed water that has been fully condensed and cooled and the cooling water after heat exchange with the condenser 8.

[0041] The condensed water at 75 - 85°C stored in the heat preservation water tank 15 and the cooling water for condensation and cooling are sent into the soft water tank 19 for the steam boiler 1 through the high-temperature hot water circulation pump 16 and the outlet pipe 17 of the high-temperature hot water circulation pump;

[0042] Because the steam boiler 1 must be regularly drained or fully drained through the boiler blowdown valve 24 during operation as required, the amount of the closed-loop condensed water will become less and less. The soft water tank 19 must be supplemented with soft water through the makeup water valve 18. The water temperature in the soft water tank 19 is only 70 - 80°C. Therefore, the temperature of the soft water in the soft water tank 19 will be lower than the temperature of the condensed water stored in the heat preservation water tank 15.

[0043] The soft water in the soft water tank 19 has two functions. One is to use the low-temperature hot water circulation pump 20 to send the condensed water transported by the TY series steam condensate recovery device into the condenser 8 through the low-temperature hot water circulation pump outlet pipe 21 for condensation and cooling. The other is to use the boiler feed water pump 22 to send it into the steam boiler 1 through the boiler feed water pump outlet pipe 23 to produce steam.

[0044] Based on the above situation, a condensation recovery and steam-water separation process system for medium-end steam condensate is designed:

[0045] 1. The condensed water at 80 - 100 °C is transported from the condensate pipe recovered by the TY series steam condensate recovery device of the heat-using equipment in the workshop to the steam condenser, steam-water separator (commonly known as the flash tank), insulation water tank, and the low-temperature hot water circulation pump between the soft water tank and the steam condenser, and the high-temperature hot water circulation pump between the insulation water tank and the boiler soft water insulation water tank, forming a steam condensation, steam-water separation, and steam condensation recovery system.

[0046] 2. For the condensation recovery and steam-water separation system of medium-end steam condensate, the steam-water mixture at 80 - 100 °C can be maximally collected and condensed and cooled to 75 - 85 °C, meeting the condition that steam basically does not leak, reducing the cost of softening treatment of boiler water, and improving the energy-saving effect.

[0047] 3. After the condensate is recovered, the recovery pipes enter the medium-end system condenser and steam-water separator respectively, and then are condensed and cooled to 75 - 85 °C and sent to the soft water feed tank of the boiler through the total recovery pipe of the medium-end system insulation water tank, reducing the cost of softening treatment of boiler water.

[0048] 4. Advantages: The condensation recovery and steam-water separation process system for medium-end steam condensate is adopted, which requires no personnel on duty, has low operating costs, is convenient and reliable for recovery, and saves energy such as fuel and electricity.

[0049] The above embodiments only describe the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A mid-end steam condensate recovery and steam-water separation device, characterized in that: It comprises a drain condensate pipeline (5), a steam condensate recovery device (6), a condenser (8), a steam-water separator (12), an insulating water tank (15), a high-temperature hot water circulation pump (16), a soft water tank (19), a low-temperature hot water circulation pump (20), a boiler feed water pump (22) and various connecting pipes; After the steam source exchanges heat with the heat-using equipment (4), the waste heat steam and condensed water cooled by the heat exchange enter the steam condensate recovery device (6) through the drain condensate pipeline (5), and the condensed water of the steam condensate recovery device (6) is introduced into the condenser (8) through the outlet pipeline (7) for condensation; The condenser (8) comprises a container tank and a coil disposed in the container tank; condensed water from the steam condensate recovery device (6) enters the coil, and the internal cavity of the condenser (8) is filled with cooling water for heat exchange; The water outlet end of the coil enters the steam-water separator (12) through the condenser to steam-water separator pipeline (10); the gas or steam separated in the steam-water separator (12) is sent to the container tank through the steam-water separator return condenser pipeline (11); the cooling liquid separated in the steam-water separator (12) is sent to the heat preservation water tank (15) through the steam-water separator outlet pipeline (13); The cooling water in the container tank after heat exchange is sent into the thermal insulation water tank (15) through the condenser outlet pipe (9); The heat preservation water in the heat preservation water tank (15) is transported to the soft water tank (19) through the high-temperature hot water circulation pump outlet pipe (17) and the high-temperature hot water circulation pump (16); The water outlet of the soft water tank (19) is divided into two paths, one of which is sent into the container tank of the condenser (8) through a low-temperature hot water circulation pump (20) and a low-temperature hot water circulation pump outlet pipe (21) and serves as cooling water, and the other of which is sent to the equipment that produces the steam source through a boiler feed water pump (22) and a boiler feed water pump outlet pipe (23).

2. The mid-end steam condensate recovery and steam-water separation device according to claim 1 is characterized in that: The steam source is generated by a steam boiler (1). The steam at 150-165° C. produced by the steam boiler (1) is transported into a steam cylinder (2) through a steam pipeline. The steam cylinder (2) is connected to the heat-using equipment (4) through a plurality of steam pipelines (3).

3. The mid-end steam condensate recovery and steam-water separation device according to claim 2 is characterized in that: A sewage pipe with a boiler sewage valve (24) is arranged at the bottom of the steam boiler (1).

4. The mid-end steam condensate recovery and steam-water separation device according to claim 1 is characterized in that: The outer wall of the thermal insulation water tank (15) is provided with a heat insulation layer, and the thermal insulation water tank (15) is provided with a thermal insulation water tank drain pipe (14).

5. The mid-end steam condensate recovery and steam-water separation device according to claim 1 is characterized in that: The soft water tank (19) is also replenished with water through a water supply pipeline with a replenishing water valve (18).

6. The mid-end steam condensate recovery and steam-water separation device according to claim 1 is characterized in that: The steam condensate recovery device (6) is a TY series steam condensate recovery device.

7. The mid-end steam condensate recovery and steam-water separation device according to claim 1 is characterized in that: A delivery pump is arranged on the outlet pipe (7).

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