A vertical steam boiler with ultra-low emissions of boiler air pollutants

Abstract

The utility model discloses a vertical steam boiler with ultra-low emissions of boiler atmospheric pollutants, including a boiler body, a ladder is provided at the rear end of the boiler body, the ladder is used to assist climbing to the top of the boiler for observation and maintenance, the ladder can climb to the top of the boiler for observation and maintenance, a steam-water separation device is designed next to the ladder, a steam outlet and a safety valve are designed on the top of the ladder, an ultra-low emission combustion box is provided at the top of the boiler body, and an air supply device is provided on the left rear side of the ultra-low emission combustion box. The utility model greatly reduces the footprint of the boiler body by designing the ultra-low emission combustion box, air supply device and other systems at the top of the boiler body and utilizing this vertical combustion structure design, and utilizes the flue gas recirculation technology to adjust the emission of atmospheric pollutants from the boiler body, and ultimately achieves the ultra-low emission standard, which meets the national boiler atmospheric pollutant emission standard.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical steam boilers, in particular to a vertical steam boiler with ultra-low emissions of boiler atmospheric pollutants. Background Art

[0002] Steam boilers are indispensable commodities that can be used in a variety of industrial production. According to different fuels, steam boilers are mainly divided into four categories: gas-fired steam boilers, oil-fired steam boilers, biomass steam boilers and coal-fired steam boilers.

[0003] Gas steam boilers in the prior art mostly adopt a three-pass shell boiler structure, which uses a large shell to wrap the internal furnace, recirculation chamber, first return smoke pipe, second return smoke pipe and other components. It is large in size and occupies a lot of space; the internal water capacity is large, the start and stop speed is slow, the fire tube structure has poor heat exchange effect and low thermal efficiency; its combustion method is generally diffusion combustion, and the nitrogen oxide emissions are high. Utility Model Content

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a vertical steam boiler with ultra-low emissions of boiler atmospheric pollutants.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a vertical steam boiler with ultra-low emissions of boiler atmospheric pollutants, comprising a boiler body, a ladder is arranged at the rear end of the boiler body, the ladder is used to assist in climbing to the top of the boiler for observation and maintenance, a steam-water separation device is designed next to the ladder, a steam outlet and a safety valve are designed on the top of the ladder, an ultra-low emission combustion box is arranged at the top of the boiler body, an air supply device is arranged on the left rear side of the ultra-low emission combustion box, a gas control valve is arranged on the front side of the ultra-low emission combustion box, and a natural gas supply port is arranged at the rear end of the gas control valve.

[0006] Furthermore, the steam-water separation device is located at the right rear side of the ultra-low emission combustion box.

[0007] Furthermore, the air supply device includes an impeller, a damper, and a motor. A muffler is provided at the upper end of the air supply device. The rear side of the air supply device is connected to an energy saver through a smoke return duct. The air supply device is used to supply air to an ultra-low emission combustion box. The smoke return duct is used to adjust the amount of smoke return according to the oxygen content and nitrogen oxide concentration in the exhaust flue gas.

[0008] Furthermore, a manual drain port and an automatic drain port are provided at the bottom of the boiler body.

[0009] Furthermore, a boiler water dosing device is provided on the left side of the front end of the boiler body, the outer side of the boiler water dosing device is connected to a water feed pump, the outer side of the water feed pump is connected to a soft water tank, and the outer side of the soft water tank is connected to an automatic water softener.

[0010] Furthermore, a power supply and control cabinet is provided in the middle of the front end of the boiler body, a pressure gauge is provided on the right side of the power supply and control cabinet, and a water level gauge is provided on the right side of the pressure gauge.

[0011] Furthermore, the upper end of the economizer is connected to a chimney, and a flue gas sampling port is provided on the outer side of the chimney.

[0012] The beneficial effects of the utility model are as follows: by designing the ultra-low emission combustion box, air supply device and other systems on the top of the boiler body, and utilizing this vertical combustion structure design, the footprint of the boiler body is greatly reduced, and the flue gas recirculation technology is utilized to adjust the emission of atmospheric pollutants from the boiler body, ultimately achieving the ultra-low emission standard and meeting the national boiler atmospheric pollutant emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a top view of the utility model;

[0015] Figure 2 It is a rear view of the utility model;

[0016] Figure 3 It is the front view of the utility model;

[0017] Figure 4 It is a flow chart of the utility model.

[0018] In the figure: 1. Boiler body, 2. Feed water pump, 3. Boiler water dosing device, 4. Steam-water separation device, 5. Steam outlet, 6. Safety valve, 7. Manual sewage outlet, 8. Automatic sewage outlet, 9. Natural gas supply port, 10. Burner and air supply system, 11. Economizer, 12. Flue gas sampling port, 13. Air supply device, 14. Ultra-low emission combustion box, 15. Gas control valve, 16. Smoke return pipe, 17. Muffler, 18. Ladder, 19. Power supply and control cabinet, 20. Water level gauge, 21. Pressure gauge, 22. Automatic water softener, 23. Soft water tank, 24. Chimney. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0020] like Figures 1 to 3 As shown, the utility model includes a boiler body 1, a ladder 18 is provided at the rear end of the boiler body 1, and the ladder 18 is used to assist climbing to the top of the boiler for observation and maintenance. A steam-water separation device 4 is designed next to the ladder 18, and a steam outlet 5 and a safety valve 6 are designed on the top thereof. An ultra-low emission combustion box 14 is provided at the top of the boiler body 1, and the steam-water separation device 4 is located on the right rear side of the ultra-low emission combustion box 14.

[0021] like Figures 1 to 3 As shown, an air supply device 13 is provided on the left rear side of the ultra-low emission combustion box 14, and the air supply device 13 includes an impeller, a damper, a motor, etc. A muffler 17 is provided on the upper end of the air supply device 13, and the rear side of the air supply device 13 is connected to an energy saver 11 through a smoke return duct 16. The air supply device 13 is used to supply air to the ultra-low emission combustion box 14, and the smoke return duct 16 is used to adjust the smoke return amount according to the oxygen content and nitrogen oxide concentration in the exhaust flue gas.

[0022] like Figures 1 to 3 As shown, a gas control valve 15 is provided at the front side of the ultra-low emission combustion box 14, a natural gas supply port 9 is provided at the rear end of the gas control valve 15, a burner and an air supply system 10 are provided outside the natural gas supply port 9, and the gas passes through the natural gas supply port 9 and the gas control valve 15 and then docks with another inlet of the ultra-low emission combustion box 14. After entering the ultra-low emission combustion box 14, the air and the gas are premixed.

[0023] like Figures 1 to 3 As shown, a manual drain port 7 and an automatic drain port 8 are provided at the bottom of the boiler body 1 for draining sewage, and a boiler water dosing device 3 is provided on the left side of the front end of the boiler body 1, the outer side of the boiler water dosing device 3 is connected to a water feed pump 2, the outer side of the water feed pump 2 is connected to a soft water tank 23, and the outer side of the soft water tank 23 is connected to an automatic water softener 22.

[0024] like Figures 1 to 3 As shown, a power supply and control cabinet 19 is provided in the middle of the front end of the boiler body 1, a pressure gauge 21 is provided on the right side of the power supply and control cabinet 19, a water level gauge 20 is provided on the right side of the pressure gauge 21, a chimney 24 is connected to the upper end of the economizer 11, and a flue gas sampling port 12 is provided on the outer side of the chimney 24.

[0025] When the utility model is in use, the raw water is softened by the automatic water softener 22 to form softened water for the boiler, which enters the soft water tank 23 for storage. The softened water is pressurized by the water supply pump 2 and enters the economizer 11 through the water supply pipeline for heating. In order to protect and prevent rust of the furnace tube, before entering the economizer 11, the softened water in the water supply pipeline is added with medicine (food sanitation grade boiler water treatment medicine) through the boiler water dosing device 3; the heated and dosed softened water enters the water tank and furnace tube in the boiler body 1 through the water supply pipeline. The softened water is formed into steam through the combustion flame in the furnace. To ensure the purity of the steam, the steam is discharged from the steam outlet 5 through the steam-water separation device 4 and sent to the place where the customer uses it. The combustion of the boiler is completed by the burner and air supply system 10 and the natural gas supply port 9. The burner and air supply system 10 use the heat of the weather as a clean fuel. Through the control of the combustion control program and the unique structural design, the flue gas emission after combustion can reach the standard of "ultra-low emission of boiler air pollutants" (nitrogen oxides can be lower than 30mg / m 3 , sulfide is 0), qualified flue gas passes through the flue connecting the boiler body 1 and the economizer 11, and is discharged from the chimney 24 through the flue, and the flue gas sampling port 12 on the chimney 24 can be sampled and tested. By designing the ultra-low emission combustion box 14, air supply device 13 and other systems on the top of the boiler body 1, using this vertical combustion structure design, the footprint of the boiler body 1 is greatly reduced, and the flue gas recirculation technology is used to adjust the emission of atmospheric pollutants from the boiler body 1, and finally achieve the ultra-low emission standard, which meets the national boiler atmospheric pollutant emission standards.

[0026] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A vertical steam boiler with ultra-low emissions of boiler air pollutants, comprising a boiler body (1), characterized in that: A ladder (18) is provided at the rear end of the boiler body (1), and the ladder (18) is used to assist in climbing to the top of the boiler for observation and maintenance. A steam-water separation device (4) is designed next to the ladder (18), and a steam outlet (5) and a safety valve (6) are designed on the top of the ladder. An ultra-low emission combustion box (14) is provided at the top of the boiler body (1), and an air supply device (13) is provided on the left rear side of the ultra-low emission combustion box (14). A gas control valve (15) is provided on the front side of the ultra-low emission combustion box (14), and a natural gas supply port (9) is provided at the rear end of the gas control valve (15).

2. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 1, characterized in that: The steam-water separation device (4) is located at the right rear side of the ultra-low emission combustion box (14).

3. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 2, characterized in that: The air supply device (13) comprises an impeller, a damper, and a motor. A muffler (17) is arranged at the upper end of the air supply device (13). The rear side of the air supply device (13) is connected to an energy saver (11) via a smoke return duct (16). The air supply device (13) is used to supply air to an ultra-low emission combustion box (14). The smoke return duct (16) is used to adjust the smoke return amount according to the oxygen content and nitrogen oxide concentration in the exhaust smoke.

4. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 3, characterized in that: The bottom of the boiler body (1) is provided with a manual sewage outlet (7) and an automatic sewage outlet (8).

5. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 4, characterized in that: A boiler water dosing device (3) is provided on the left side of the front end of the boiler body (1); the outer side of the boiler water dosing device (3) is connected to a water supply pump (2); the outer side of the water supply pump (2) is connected to a soft water tank (23); and the outer side of the soft water tank (23) is connected to an automatic water softener (22).

6. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 5, characterized in that: A power supply and control cabinet (19) is arranged at the middle of the front end of the boiler body (1), a pressure gauge (21) is arranged on the right side of the power supply and control cabinet (19), and a water level gauge (20) is arranged on the right side of the pressure gauge (21).

7. A vertical steam boiler with ultra-low emissions of boiler air pollutants according to claim 6, characterized in that: The upper end of the energy saver (11) is connected to a chimney (24), and a flue gas sampling port (12) is arranged on the outer side of the chimney (24).

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