Sodium hexametaphosphate production waste heat utilization device

Abstract

The utility model discloses a sodium hexametaphosphate production waste heat utilization device which comprises a shell, a feeding pipe is arranged on the side portion of the shell, the other end of the feeding pipe is fixedly connected with production equipment, and a discharging pipe is arranged at the bottom of the production equipment. A flow guide cover is arranged at the top in the shell, a motor is fixedly connected to the upper surface of the shell, a rotating shaft is fixedly connected to the output end of the motor, rotating blades are arranged on the rotating shaft, a collecting pipe is arranged on the flow guide cover, a spiral pipe is arranged in the collecting pipe, and a heat exchanger is fixedly connected to the other end of the collecting pipe. A hot water storage tank is arranged at the bottom of the heat exchanger, the hot water storage tank is fixedly connected with the production equipment through a circulating pipe, and a cooling tower is fixedly connected to the upper surface of the shell. By means of the device, through cooperation of the rotating blade, the spiral pipe, the heat exchanger and the hot water storage tank, energy waste is reduced, energy efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium hexametaphosphate production, and particularly relates to a waste heat utilization device for sodium hexametaphosphate production. Background Art

[0002] As an important industrial chemical, sodium hexametaphosphate has a wide range of applications in many fields. Its main uses include water treatment, detergent production, food additives, ceramics, papermaking and other industries. In these applications, sodium hexametaphosphate can play roles such as softening water quality, improving cleaning effect, enhancing food quality and stability, etc.

[0003] In the existing sodium hexametaphosphate production technology, waste heat is mostly directly discharged, but this way causes waste of energy. For example, the Chinese patent discloses "a waste heat utilization device for sodium hexametaphosphate production" with the application number "CN202322523642.7". It uses a drying chamber, distillation baffles and a liquid outlet. When in use, the waste gas is blocked by the staggered distillation baffles when passing through the drying chamber. Some liquid mixtures contained in the waste gas are condensed on the distillation baffles and are collected through the inclined liquid guide plate and taken out through the liquid outlet. The solid mixture is dried in the drying chamber and then enters the heat circulation box through the feeding port for further treatment. However, its condensation method may lead to low condensation efficiency, and some liquid mixtures are not fully condensed, affecting the overall waste heat utilization efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a waste heat utilization device for sodium hexametaphosphate production. Through the cooperation of a rotating blade, a spiral pipe, a heat exchanger and a hot water storage tank, the high-temperature waste gas and hot fluid generated by the sodium hexametaphosphate equipment enter the heat exchanger through the waste heat collection pipeline. The spiral pipe in the collection pipeline effectively increases the distance of waste heat transmission and improves the heat transfer effect. The heat is transferred to the water in the storage tank through the heat exchanger to generate hot water. The hot water storage tank transports the hot water to the production equipment that needs to be heated through a hot water circulation pump, realizing the effective utilization of waste heat. The excess heat of the hot water storage tank is transferred to the cooling tower, effectively preventing the equipment from overheating and causing damage, thereby reducing energy waste, improving energy efficiency and reducing production costs, and realizing the effective utilization of waste heat.

[0005] The present utility model also provides a device for utilizing waste heat in the production of sodium hexametaphosphate, which includes: a housing, a feed pipe is arranged on the side of the housing, the other end of the feed pipe is fixedly connected to a production device, and a discharge pipe is arranged at the bottom of the production device; a flow guide cover is arranged at the top inside the housing, a motor is fixedly connected to the upper surface of the housing, the output end of the motor is fixedly connected to a rotating shaft, a rotating blade is arranged on the rotating shaft, a collecting pipe is arranged on the flow guide cover, a spiral pipe is arranged inside the collecting pipe, the other end of the collecting pipe is fixedly connected to a heat exchanger, a hot water storage tank is arranged at the bottom of the heat exchanger, and the hot water storage tank and the production device are fixedly connected through a circulation pipe, and a cooling tower is fixedly connected to the upper surface of the housing. Through the above device, through the cooperation of the rotating blade, the spiral pipe, the heat exchanger and the hot water storage tank, the waste of energy is reduced, the energy efficiency is improved, and the production cost is reduced.

[0006] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, a valve is arranged on the feed pipe, and the feed pipe penetrates through the inner wall of the housing. Through the above device, the flow rate of the reactants is controlled through the valve.

[0007] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, the production device is located at the bottom inside the housing, and a side plate is arranged inside the housing. Through the above device, the production device and the heat exchanger are effectively isolated through the side plate.

[0008] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, the flow guide cover is located directly above the production device, and the flow guide cover is an inverted frustum. Through the above device, the waste heat emitted by the production device is effectively collected through the shape of the flow guide cover.

[0009] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, the rotating blade is located inside the flow guide cover and directly above the production device. Through the above device, the heat is effectively transferred into the collecting pipe through the rotating blade.

[0010] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, an exhaust fan is fixedly connected to the upper surface of the housing, the collecting pipe is fixedly connected to the output end of the exhaust fan, and the collecting pipe penetrates through the side plate. Through the above device, the waste heat is effectively extracted through the exhaust fan.

[0011] For a device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, the hot water storage tank and the heat exchanger are fixedly connected through a heat discharge pipe, a heat preservation layer is arranged outside the hot water storage tank, and the hot water storage tank and the cooling tower are fixedly connected through a drain pipe. Through the above device, the hot water storage tank is effectively heat-insulated through the heat preservation layer.

[0012] A device for utilizing waste heat in the production of sodium hexametaphosphate according to the present utility model, a hot water circulation pump is provided on the circulation pipe, and the circulation pipe is fixedly connected to the output end of the hot water circulation pump. Through the above device, the hot water is effectively transported to the production equipment that needs to be heated by the hot water circulation pump.

[0013] Advantageous effects

[0014] Compared with the prior art, in the device for utilizing waste heat in the production of sodium hexametaphosphate, through the cooperation of the rotating blade, the spiral pipe, the heat exchanger, and the hot water storage tank, the high-temperature waste gas and the hot fluid generated by the sodium hexametaphosphate equipment enter the heat exchanger through the waste heat collection pipe. The spiral pipe in the collection pipe effectively increases the distance of waste heat transmission and improves the heat transfer effect. The heat is transferred to the water in the storage tank through the heat exchanger to generate hot water. The hot water storage tank transports the hot water to the production equipment that needs to be heated through the hot water circulation pump, realizing the effective utilization of waste heat. The excess heat in the hot water storage tank is transferred to the cooling tower, effectively preventing the equipment from overheating and causing damage, thereby reducing energy waste, improving energy efficiency, reducing production costs, and realizing the effective utilization of waste heat. Description of the drawings

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 It is the front view of the device for utilizing waste heat in the production of sodium hexametaphosphate of the present utility model;

[0017] Figure 2 It is the Figure 1 vertical sectional view of the device for utilizing waste heat in the production of sodium hexametaphosphate of the present utility model;

[0018] Figure 3 It is the Figure 2 horizontal sectional view of the device for utilizing waste heat in the production of sodium hexametaphosphate of the present utility model;

[0019] Figure 4 It is the Figure 2 enlarged view at A in the device for utilizing waste heat in the production of sodium hexametaphosphate of the present utility model;

[0020] Figure 5 It is the Figure 2 enlarged view at B in the device for utilizing waste heat in the production of sodium hexametaphosphate of the present utility model.

[0021] Legend description:

[0022] 1. Outer shell; 2. Feed pipe; 3. Valve; 4. Production equipment; 5. Motor; 6. Rotating shaft; 7. Rotating blade; 8. Collection pipe; 9. Spiral pipe; 10. Heat exchanger; 11. Heat discharge pipe; 12. Hot water storage tank; 13. Thermal insulation layer; 14. Drain pipe; 15. Cooling tower; 16. Hot water circulation pump; 17. Circulation pipe; 18. Exhaust fan; 19. Discharge pipe; 20. Deflector. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0024] Referring to Figures 1-5 , an apparatus for utilizing waste heat in the production of sodium hexametaphosphate according to an embodiment of the present invention includes: an outer shell 1. A feed pipe 2 is provided on the side of the outer shell 1. Reactants are added through the feed pipe 2. A valve 3 is provided on the feed pipe 2 to control the flow rate of the reactants. The feed pipe 2 penetrates the inner wall of the outer shell 1. The other end of the feed pipe 2 is fixedly connected to production equipment 4. The production equipment 4 is a dedicated device for producing sodium hexametaphosphate in the prior art and is not described in detail herein. The production equipment 4 is located at the inner bottom of the outer shell 1. A side plate is provided inside the outer shell 1. A discharge pipe 19 is provided at the bottom of the production equipment 4, and the discharge pipe 19 facilitates the discharge of sodium hexametaphosphate.

[0025] There is a flow deflector 20 provided at the top inside the outer shell 1. The flow deflector 20 concentrates the waste heat. The flow deflector 20 is located directly above the production equipment 4. The flow deflector 20 is an inverted frustum-shaped. There is a motor 5 fixedly connected to the upper surface of the outer shell 1. The output end of the motor 5 is fixedly connected to a rotating shaft 6. There is a rotating blade 7 provided on the rotating shaft 6. The rotating blade 7 facilitates the transfer of waste heat to the collection pipe 8. The rotating blade 7 is located inside the flow deflector 20. The rotating blade 7 is located directly above the production equipment 4. There is a collection pipe 8 provided on the flow deflector 20. The collection pipe 8 collects the waste heat. There is a spiral pipe 9 provided inside the collection pipe 8. The spiral pipe 9 increases the flow path and residence time of the medium, improving the heat exchange effect. There is an exhaust fan 18 fixedly connected to the upper surface of the outer shell 1. The exhaust fan 18 facilitates the collection of waste heat by the collection pipe 8. The collection pipe 8 is fixedly connected to the output end of the exhaust fan 18. The collection pipe 8 penetrates the side plate. The other end of the collection pipe 8 is fixedly connected to a heat exchanger 10. The heat exchanger 10 conducts heat exchange. There is a hot water storage tank 12 provided at the bottom of the heat exchanger 10. The hot water storage tank 12 stores hot water. The hot water storage tank 12 is fixedly connected to the production equipment 4 through a circulation pipe 17. There is a hot water circulation pump 16 provided on the circulation pipe 17. The hot water circulation pump 16 transports the hot water to the production equipment 4 that needs to be heated. The circulation pipe 17 is fixedly connected to the output end of the hot water circulation pump 16. There is a cooling tower 15 fixedly connected to the upper surface of the outer shell 1. The cooling tower 15 improves the cooling effect. The hot water storage tank 12 is fixedly connected to the heat exchanger 10 through a heat discharge pipe 11. There is a heat insulation layer 13 provided outside the hot water storage tank 12. The heat insulation layer 13 protects the hot water inside the hot water storage tank 12. The hot water storage tank 12 is fixedly connected to the cooling tower 15 through a drain pipe 14.

[0026] Working principle: During use, in the production process, the high-temperature waste gas and hot fluid generated by the sodium hexametaphosphate equipment are swirled by the rotation of the rotating blade 7, causing the waste heat to move upward into the collection pipe 8. The collection pipe 8 enters the heat exchanger 10. The spiral pipe 9 inside the collection pipe 8 increases the flow path and residence time of the high-temperature medium in the pipeline, and the heat is more fully transferred to the cold water to generate high-temperature hot water. The high-temperature hot water is transported to the hot water storage tank 12 for storage and standby. When the waste heat needs to be utilized, the hot water circulation 16 transports the hot water in the hot water storage tank 12 to the production equipment 4 that needs to be heated. When the waste heat cannot be fully utilized, the cooling tower 15 discharges the excess heat into the environment. The hot water in the hot water storage tank 12 enters the cooling tower 15 through the drain pipe 14 system. The cooling tower 15 dissipates the heat into the environment through the evaporation of the cooling water and air convection. The cooled water then flows back into the hot water storage tank 12.

[0027] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which it pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A device for utilizing waste heat from the production of sodium hexametaphosphate, characterized in that: include: A housing (1), a feeding pipe (2) is arranged on the side of the housing (1), the other end of the feeding pipe (2) is fixedly connected to a production device (4), and a discharge pipe (19) is arranged at the bottom of the production device (4); A flow guide cover (20) is arranged at the top of the shell (1); a motor (5) is fixedly connected to the upper surface of the shell (1); a rotating shaft (6) is fixedly connected to the output end of the motor (5); a rotating blade (7) is arranged on the rotating shaft (6); a collecting pipe (8) is arranged on the flow guide cover (20); a spiral tube (9) is arranged inside the collecting pipe (8); a heat exchanger (10) is fixedly connected to the other end of the collecting pipe (8); a hot water storage tank (12) is arranged at the bottom of the heat exchanger (10); the hot water storage tank (12) is fixedly connected to the production equipment (4) via a circulation pipe (17); and a cooling tower (15) is fixedly connected to the upper surface of the shell (1).

2. A sodium hexametaphosphate production waste heat utilization device according to claim 1, characterized in that: The feed pipe (2) is provided with a valve (3), and the feed pipe (2) passes through the inner wall of the outer shell (1).

3. A sodium hexametaphosphate production waste heat utilization device according to claim 1, characterized in that: The production equipment (4) is located at the bottom of the outer shell (1), and a side panel is provided inside the outer shell (1).

4. The device for utilizing waste heat from the production of sodium hexametaphosphate according to claim 1, characterized in that: The air guide cover (20) is located directly above the production equipment (4), and the air guide cover (20) is in the shape of an inverted prism.

5. The device for utilizing waste heat from the production of sodium hexametaphosphate according to claim 1, characterized in that: The rotating blade (7) is located inside the air guide cover (20), and the rotating blade (7) is located directly above the production equipment (4).

6. The device for utilizing waste heat from the production of sodium hexametaphosphate according to claim 3, characterized in that: The upper surface of the housing (1) is fixedly connected to an exhaust fan (18), the collecting pipe (8) is fixedly connected to the output end of the exhaust fan (18), and the collecting pipe (8) passes through the side plate.

7. The device for utilizing waste heat from the production of sodium hexametaphosphate according to claim 1, characterized in that: The hot water storage tank (12) and the heat exchanger (10) are fixedly connected via a heat exhaust pipe (11), a heat insulation layer (13) is provided outside the hot water storage tank (12), and the hot water storage tank (12) and the cooling tower (15) are fixedly connected via a drainage pipe (14).

8. The device for utilizing waste heat from the production of sodium hexametaphosphate according to claim 1, characterized in that: A hot water circulation pump (16) is arranged on the circulation pipe (17), and the circulation pipe (17) is fixedly connected to the output end of the hot water circulation pump (16).

Images