Steam recycling device for blow pot

Abstract

The utility model relates to the technical field of steam recycling, in particular to a steam recycling device for a blow pot, which comprises a base and the blow pot arranged at the top of the base, one side of the blow pot is fixedly connected with a steam leading-out control valve, and one end of the steam leading-out control valve is fixedly connected with a high-temperature-resistant water pump. The output end of the high-temperature-resistant water pump is fixedly connected with a first-stage steam tank, one side of the first-stage steam tank is fixedly connected with a liquid level sensor, one side of the first-stage steam tank is fixedly connected with a steam leading-out pipe, and one end of the steam leading-out pipe is fixedly connected with a second-stage steam tank. The problem that the steam recovery rate is greatly reduced due to the fact that steam recovery is not fully considered in a traditional process design is solved, and oxygen generated in the steam recovery process is separated and discharged through a thermal deaerator arranged in the steam recovery process. The problem that the equipment is aged and corroded due to oxygen generated in the steam recycling process of the equipment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam recovery and utilization, in particular to a steam recovery and utilization device for a blowdown boiler. Background Art

[0002] With the development of industrialization in my country, energy demand continues to increase, and energy recovery and utilization are becoming increasingly important. Steam is a necessity in many industrial production processes, and steam recovery and utilization technology, starting with condensate, has become an important means of energy conservation and emission reduction.

[0003] Currently, steam recovery is mostly done by transporting the steam generated by the boiler to the gas-consuming equipment. The specific process is that the steam generated by the boiler is transported to the steam tank, and then the steam in the steam tank is input into the gas-consuming equipment for use. Finally, the water generated by the gas-consuming equipment is transported back to the boiler for further evaporation.

[0004] However, in industrial production, the design of this process does not fully consider steam recovery, especially the small amount of condensate recovered, which wastes a large amount of softened water. As a result, the boiler needs to be constantly replenished with water, which increases the water cost. Secondly, the oxygen generated during the steam recovery process will cause equipment aging and damage, thus causing steam leakage from the equipment, resulting in steam and water loss, making the subsequent recovery effect poor, and causing the steam recovery rate to be greatly reduced. These are the two main reasons for the decline in steam recovery rate. Utility Model Content

[0005] (1) Technical problems solved

[0006] The problem that steam recovery is not fully considered in the process design, resulting in a greatly reduced steam recovery rate, is solved, and the problem that the oxygen generated during the steam recovery process may cause air or water leakage in the equipment is solved.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a steam recovery and utilization device of a spraying pot, comprising a base and a spraying pot arranged on the top of the base, one side of the spraying pot is fixedly connected to a steam outlet control valve, one end of the steam outlet control valve is fixedly connected to a high-temperature resistant water pump, the output end of the high-temperature resistant water pump is fixedly connected to a first-level steam tank, one side of the first-level steam tank is fixedly connected to a liquid level sensor, one side of the first-level steam tank is fixedly connected to a steam outlet pipe, one end of the steam outlet pipe is fixedly connected to a second-level steam tank, and one side of the second-level steam tank is fixedly connected to a magnetic flap liquid level gauge.

[0009] As a preferred solution of the blowdown boiler steam recovery and utilization device described in the utility model, one side of the secondary steam tank is fixedly connected to a steam and liquid outlet pipe, one end of the steam and liquid outlet pipe is fixedly connected to a water supply and steam inlet, one end of the water supply and steam inlet is fixedly connected to a thermal deaerator, and the top of the thermal deaerator is fixedly connected to an oxygen exhaust pipe.

[0010] As an optimal solution of the steam recovery and utilization device of a blowdown boiler described in the utility model, one end of the thermal deaerator is fixedly connected to a condensate recovery pipe, one end of the condensate recovery pipe is fixedly connected to a soft water storage tank, and one side of the soft water storage tank is fixedly connected to a steam-using equipment.

[0011] As an optimal solution of the steam recovery and utilization device of a blowdown boiler described in the utility model, one side of the steam-using equipment is fixedly connected with a steam and liquid pipeline, one end of the steam and liquid pipeline is fixedly connected with a steam-liquid separator, and the bottom of the steam drum is fixedly connected with a sewage outlet.

[0012] As a preferred solution of the steam recovery and utilization device of the spray pot described in the utility model, one end of the steam-liquid separator is fixedly connected to a steam and liquid outlet pipe, and one end of the steam and liquid outlet pipe is fixedly connected to one side of the spray pot.

[0013] As a preferred solution of the steam recovery and utilization device for a blowdown boiler described in the utility model, the top of the base is fixedly connected to a steam system control cabinet, and one side of the steam system control cabinet is fixedly connected to a function control switch.

[0014] Beneficial effects of the utility model:

[0015] 1. The closed-loop steam condensate recycling equipment, especially the steam-liquid separator, solves the problem of greatly reduced steam recovery rate caused by insufficient consideration of steam recovery in traditional process design.

[0016] 2. The thermal deaerator installed in this steam recovery equipment separates and discharges most of the oxygen generated during the steam recovery process, solving the problem of equipment aging and corrosion caused by the oxygen generated during the steam recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the left side structure of the utility model.

[0020] Figure 3 This is a structural diagram of the vapor-liquid separator of the utility model.

[0021] Figure 4 This is a structural diagram of the high-temperature resistant water pump of the utility model.

[0022] In the figure: 1. Base; 2. Blowout pot; 3. Liquid level sensor; 4. First-stage steam tank; 5. Steam outlet pipe; 6. Magnetic flap liquid level gauge; 7. Second-stage steam tank; 8. Thermal deaerator; 9. Soft water storage tank; 10. Function control switch; 11. Steam system control cabinet; 12. Steam-using equipment; 13. Steam and liquid inlet pipes; 14. Steam-liquid separator; 15. Steam and liquid outlet pipes; 16. Oxygen discharge pipe; 17. Steam outlet control valve; 18. High-temperature resistant water pump; 19. Water and steam inlet; 20. Sewage outlet; 21. Steam and liquid outlet pipes; 22. Condensate recovery pipe. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] Reference Figure 1-2 , which is the first embodiment of the present utility model, provides a steam recovery device for a spray pot, including a base and a spray pot 2 arranged on the top of the base, a steam export control valve 17 is fixedly connected to one side of the spray pot 2, for controlling the release of steam and closing the device in the event of a fault, one end of the steam export control valve 17 is fixedly connected to a high-temperature resistant water pump 18, which can work in a high-temperature environment for a long time, the output end of the high-temperature resistant water pump 18 is fixedly connected to a first-level steam tank 4, when water and steam enter the first-level steam tank 4, the impact is very large, which is used to alleviate the impact of water and steam entering the first-level steam tank 4 and stabilize the water level, a liquid level sensor 3 is fixedly connected to one side of the first-level steam tank 4, for controlling the stability of the liquid level, a steam export pipe 5 is fixedly connected to one side of the first-level steam tank 4, one end of the steam export pipe 5 is fixedly connected to a second-level steam tank 7, the steam in the first-level steam tank 4 enters the second-level steam tank 7 through the steam export pipe 5, at this time, the liquid level entering the second-level steam tank 7 after being buffered by the first-level steam tank 4 is relatively stable, and a magnetic flap liquid level gauge 6 is fixedly connected to one side of the second-level steam tank 7, which is convenient for observing the liquid level height in the tank at any time.

[0026] A steam and liquid outlet pipe 21 is fixedly connected to one side of the secondary steam tank 7, one end of the steam and liquid outlet pipe 21 is fixedly connected to the water supply and steam inlet 19, and one end of the water supply and steam inlet 19 is fixedly connected to the thermal deaerator 8. The steam in the secondary steam tank 7 enters the water supply and steam inlet 19 through the steam and liquid outlet pipe 21, and then enters the thermal deaerator 8. The top of the thermal deaerator 8 is fixedly connected to the oxygen outlet pipe 16. The thermal deaerator 8 utilizes the solubility characteristics of gas in water and heats the feed water and condensate entering the deaerator to a saturation temperature corresponding to the internal pressure of the deaerator through steam heating, precipitates the oxygen dissolved in the water from the water, and discharges it into the atmosphere through the top oxygen outlet pipe 16, so that the oxygen content in the water meets the specified standard, thereby solving the problem of equipment aging and corrosion caused by the oxygen generated during the steam recovery process.

[0027] The working principle of the thermal deaerator 8 is mainly based on Henry's law of gas solubility, that is, the solubility of any gas in water is proportional to the partial pressure of the gas at the water interface, that is, the solubility of the gas in water decreases as the water is heated. At a saturation temperature equivalent to a certain pressure, the solubility of the gas in water is equal to zero. When the water is heated in the equipment, the partial pressure of water vapor on the gas-water interface will increase, and the partial pressure of other gases will decrease, and various gases will continue to precipitate. This separation process is called the desorption process. When the water is heated to the saturation temperature, the partial pressure of water vapor on the gas-water interface will be close to the total pressure on the liquid surface. At this time, the partial pressure of all other gases on the liquid surface will be close to zero, and most of the gases dissolved in the water will be separated. This principle can be used to remove most of the dissolved oxygen in the water.

[0028] One end of the thermal deaerator 8 is fixedly connected to a condensate recovery pipe 22, and one end of the condensate recovery pipe 22 is fixedly connected to a soft water storage tank 9. The thermal deaerator 8 transports the water that has released oxygen to the soft water storage tank 9 through the condensate recovery pipe. One side of the soft water storage tank 9 is fixedly connected to a steam-using device 12. When the steam-using device 12 is running, the water generated by the reduced steam temperature flows into the soft water storage tank 9.

[0029] Example 2

[0030] Reference Figure 3-4, which is the second embodiment of the present utility model. This embodiment is different from the first embodiment in that: a steam-using equipment 12 is fixedly connected to one side of the steam-using equipment 12 with a steam and liquid inlet pipeline 13, one end of the steam and liquid inlet pipeline 13 is fixedly connected to a steam-liquid separator 14 for separating steam and water, and the bottom of the steam-liquid separator 14 is fixedly connected to a sewage outlet 20 for facilitating the removal of impurities such as scale to avoid affecting the normal operation of the equipment, one end of the steam-liquid separator 14 is fixedly connected to a steam and liquid outlet pipeline 15, one end of the steam and liquid outlet pipeline 15 is fixedly connected to one side of the blowdown pot 2, and the water separated by the steam-liquid separator 14 is transported to the blowdown pot 2 and converted into steam again to enter the first-level steam tank 4, thereby completing the closed-loop recycling of steam and condensed water.

[0031] The working principle of the gas-liquid separator 14 is to separate the gas and liquid by changing the flow direction and speed of the fluid by utilizing the density difference and gravity of the gas and liquid.

[0032] A steam system control cabinet 11 is fixedly connected to the top of the base 1 , and a function control switch 10 is fixedly connected to one side of the steam system control cabinet 11 for controlling the operation of the device and emergency shutdown in case of failure.

[0033] The remaining structures are the same as those of Example 1.

[0034] The spray pot 2 transports steam to the first-level steam tank 4. When water and steam enter the first-level steam tank 4, the impact is very large. It is used to alleviate the impact of water and steam entering the first-level steam tank 4 and stabilize the water level. The steam in the first-level steam tank 4 enters the second-level steam tank 7 through the steam outlet pipe 5. At this time, the liquid level entering the second-level steam tank 7 after being buffered by the first-level steam tank 4 is relatively stable. The steam in the second-level steam tank 7 enters the water supply and steam inlet 19 through the steam and liquid outlet pipe 21, and then enters the thermal deaerator 8. The thermal deaerator 8 uses the solubility characteristics of gas in water to heat the deaerator by steam. The feed water and condensate of the deaerator are heated to the saturation temperature corresponding to the internal pressure of the deaerator, and the oxygen dissolved in the water is precipitated from the water and discharged into the atmosphere through the top oxygen discharge pipe 16. The thermal deaerator 8 transports the water with oxygen precipitated through the condensate recovery pipe to the soft water storage tank 9. One side of the soft water storage tank 9 is fixedly connected to the steam-using equipment 12. When the steam-using equipment 12 is running, the water generated by the reduced steam temperature flows into the soft water storage tank 9, and the water separated by the vapor-liquid separator 14 is transported to the spray pot 2 and converted into steam again to enter the first-level steam tank 4, thereby completing the closed cycle recycling of steam and condensate.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A steam recovery device for a blowdown pot, comprising a base (1) and a blowdown pot (2) arranged on top of the base (1), characterized in that: A steam outlet control valve (17) is fixedly connected to one side of the spray pot (2), one end of the steam outlet control valve (17) is fixedly connected to a high-temperature resistant water pump (18), an output end of the high-temperature resistant water pump (18) is fixedly connected to a primary steam tank (4), one side of the primary steam tank (4) is fixedly connected to a liquid level sensor (3), one side of the primary steam tank (4) is fixedly connected to a steam outlet pipe (5), one end of the steam outlet pipe (5) is fixedly connected to a secondary steam tank (7), and one side of the secondary steam tank (7) is fixedly connected to a magnetic flap liquid level gauge (6).

2. The steam recovery device for a blowdown boiler according to claim 1, characterized in that: One side of the secondary steam tank (7) is fixedly connected to a steam and liquid outlet pipe (21), one end of the steam and liquid outlet pipe (21) is fixedly connected to a water supply and steam inlet (19), one end of the water supply and steam inlet (19) is fixedly connected to a thermal deaerator (8), and the top of the thermal deaerator (8) is fixedly connected to an oxygen outlet pipe (16).

3. The steam recovery device for a blowdown boiler according to claim 2, characterized in that: One end of the thermal deaerator (8) is fixedly connected to a condensate recovery pipe (22), one end of the condensate recovery pipe (22) is fixedly connected to a soft water storage tank (9), and one side of the soft water storage tank (9) is fixedly connected to a steam-using device (12).

4. The steam recovery device for a blowdown boiler according to claim 3, characterized in that: One side of the steam-using equipment (12) is fixedly connected to a steam and liquid inlet pipeline (13), one end of the steam and liquid inlet pipeline (13) is fixedly connected to a vapor-liquid separator (14), and the bottom of the vapor-liquid separator (14) is fixedly connected to a sewage outlet (20).

5. The steam recovery device for a blowdown boiler according to claim 4, characterized in that: One end of the vapor-liquid separator (14) is fixedly connected to a vapor and liquid outlet pipeline (15), and one end of the vapor and liquid outlet pipeline (15) is fixedly connected to one side of the spray pot (2).

6. The steam recovery device for a blowdown boiler according to claim 4, characterized in that: A steam system control cabinet (11) is fixedly connected to the top of the base (1), and a function control switch (10) is fixedly connected to one side of the steam system control cabinet (11).

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