CN212757971U

CN212757971U - Desulfurization system for boiler flue gas treatment

Info

Publication number: CN212757971U
Application number: CN202021521779.9U
Authority: CN
Inventors: 黄勇兵; 陈惠杰
Original assignee: Fujian Shengteng Energy Technology Co ltd
Current assignee: Fujian Shengteng Energy Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-23
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a desulfurization system for boiler flue gas is handled, relate to boiler flue gas and handle technical field, specifically be a desulfurization system for boiler flue gas is handled, including the flue gas input tube, the one end threaded connection of flue gas input tube has the dust filter chamber, the side fixedly connected with flue gas conduction pipe of dust filter chamber, the other end fixedly connected with desulfurization case of flue gas conduction pipe, one side that the upper surface of desulfurization case is located flue gas conduction pipe is pegged graft and is had the top of the internal surface of sodium carbonate solvent interpolation pipe desulfurization case and the corresponding position of sodium carbonate solvent interpolation pipe to be equipped with shutoff mechanism, be equipped with shutoff control mechanism on the lateral wall of the internal surface of desulfurization case, the lower surface of desulfurization case is pegged graft and is had the liquid honeycomb duct. This a desulfurization system for boiler flue gas handles through the cooperation setting of sodium carbonate solvent addition pipe, shutoff mechanism and shutoff control mechanism, can add the back automatic shutdown solvent that adds in suitable volume at the solvent, prevents that the solvent from adding excessively, makes the production process more simple and convenient high-efficient.

Description

Desulfurization system for boiler flue gas treatment

Technical Field

The utility model relates to a boiler flue gas handles technical field, specifically is a desulfurization system for boiler flue gas is handled.

Background

With the rapid development of economy in China, the energy consumption is increased day by day, and the air quality is deteriorated day by day. At present, the requirements of energy conservation, emission reduction and environmental protection are continuously improved, natural gas is used as clean energy with higher heat value, and the proportion of the natural gas in urban energy consumption structures in China is continuously increased. At present, most coal-fired boilers in large and medium-sized cities in China are changed into gas-fired boilers. For most gas boilers, the exhaust gas temperature is still above 150 ℃, even up to 250 ℃. The flue gas of the boiler contains a large amount of sulfur dioxide gas, and the sulfur dioxide gas is toxic gas, if the sulfur dioxide gas is directly discharged into the atmosphere, serious atmospheric pollution can be caused, and the health of nearby human bodies can be seriously influenced, so that the sulfur dioxide gas in the flue gas of the boiler needs to be absorbed and purified.

The existing desulfurization system for treating the boiler flue gas can generate a large amount of solid waste in the desulfurization process, and the solid waste can contain other harmful elements such as arsenic, cadmium, lead, mercury and the like, can not be directly discharged, needs to be subjected to secondary treatment, is very troublesome and wastes time, causes a large amount of resource waste and can not be recycled, and is easy to cause the occurrence of the condition that the boiler flue gas desulfurization treatment is not thorough.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a desulfurization system for boiler flue gas is handled to not enough to prior art, the problem of proposing in the above-mentioned background art has been solved.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a desulfurization system for boiler flue gas treatment comprises a flue gas input pipe, wherein one end of the flue gas input pipe is in threaded connection with a dust filter chamber, the side surface of the dust filter chamber is fixedly connected with a flue gas conduction pipe, the other end of the flue gas conduction pipe is fixedly connected with a desulfurization box, one side, positioned on the flue gas conduction pipe, of the upper surface of the desulfurization box is spliced with a sodium carbonate solvent adding pipe, the other side, positioned on the flue gas conduction pipe, of the upper surface of the desulfurization box is spliced with an exhaust pipe, a plugging mechanism is arranged at the position, corresponding to the sodium carbonate solvent adding pipe, of the top of the inner surface of the desulfurization box, a plugging control mechanism is arranged on the side wall of the inner surface of the desulfurization box, a liquid guide pipe is spliced on the lower surface of the desulfurization box, the other end of the liquid guide pipe is fixedly connected with a distillation box, and a, the internal surface of distillation case is equipped with the heating piece, the inside of distillation case is equipped with heating control mechanism, the other end fixedly connected with condensation gas-collecting box of gas honeycomb duct.

Optionally, a sealing gasket is arranged inside the flue gas input pipe, one end of the dust filter cavity abuts against the side face of the sealing gasket, and a plurality of dust adsorption nets are arranged inside the dust filter cavity.

Optionally, the shutoff mechanism includes spacing sliding tray, the side fixedly connected with of spacing sliding tray adsorbs the solenoid, it has cup jointed the shutoff spring on the adsorption solenoid, the other end fixedly connected with of shutoff spring seals the slider, the side fixedly connected with who seals the slider magnet that opens and shuts, the another side of spacing sliding tray is equipped with power off switch, the upper surface that seals the slider is equipped with rubber sealing pad, the bottom of spacing sliding tray is equipped with and adds the corresponding opening in pipe position with sodium carbonate solvent.

Optionally, the plugging control mechanism includes a side sliding groove, a T-shaped sliding plate slides inside the side sliding groove, a buoyancy bottle is fixedly connected to the bottom of the T-shaped sliding plate, an elastic ejector rod is fixedly connected to the lower surface of the T-shaped sliding plate, and the other end of the elastic ejector rod is abutted to a pressure sensitive resistor.

Optionally, the piezoresistor is fixedly connected to the lower surface of the side sliding groove, and the piezoresistor is electrically connected to the adsorption solenoid.

Optionally, the heating control mechanism includes the control by temperature change spring, control by temperature change spring fixed connection is on the lateral wall of distillation case, the other end fixedly connected with control magnet of control by temperature change spring, the top of control magnet is equipped with the waterproof box, the internal surface fixedly connected with extension spring of waterproof box, extension spring's other end fixedly connected with circular telegram board, circular telegram board's inside is equipped with the outage solenoid.

(III) advantageous effects

The utility model provides a desulfurization system for boiler flue gas is handled possesses following beneficial effect:

1. this a desulfurization system for boiler flue gas is handled, through the cooperation setting of sodium carbonate solvent addition pipe, shutoff mechanism and shutoff control mechanism, make this a desulfurization system for boiler flue gas is handled can be after the solvent adds suitable volume by automatic stop solvent addition in the in-process that uses, prevent that the solvent from adding excessive, thereby sodium sulfite that the product of sodium carbonate solvent and sulfur dioxide reaction can be used for anticorrosive agent and reductant etc. and obtain abundant utilization in addition to obtain higher economic benefits.

2. This a desulfurization system for boiler flue gas is handled, through the setting of heating control mechanism, make this a desulfurization system for boiler flue gas is handled can control whether the heating block is opened according to the temperature in the distillation tank at the in-process that uses, when guaranteeing the gaseous evaporation efficiency of sulfur dioxide in the solution, guarantee that the sodium sulfite crystallization of damage can not receive too high temperature and the dehydration decomposes in the solution, subsequent sodium sulfite recycle of being convenient for more.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front sectional view of the desulfurization box of the present invention;

fig. 3 is an enlarged schematic structural view at a position a of the present invention;

FIG. 4 is a front sectional structural view of the distillation box of the present invention;

fig. 5 is an enlarged schematic structural view of the utility model at the position B;

fig. 6 is a schematic structural view of the front sectional view of the dust filter chamber of the present invention.

In the figure: 1. a flue gas input pipe; 2. a dust filter chamber; 3. a flue gas conducting pipe; 4. a desulfurization box; 5. a sodium carbonate solvent addition tube; 6. an exhaust pipe; 7. a plugging mechanism; 701. a limiting sliding groove; 702. an adsorption solenoid; 703. plugging the spring; 704. a sealing slide block; 705. an opening and closing magnet; 706. a power-off switch; 8. a plugging control mechanism; 801. a side chute; 802. a T-shaped sliding plate; 803. a buoyancy bottle; 804. an elastic ejector rod; 805. a voltage dependent resistor; 9. a heating control mechanism; 901. a temperature control spring; 902. a control magnet; 903. a waterproof box; 904. an extension spring; 905. a power-on plate; 906. a de-energizing solenoid; 10. a liquid draft tube; 11. a distillation box; 12. a gas flow guide pipe; 13. a condensing gas-collecting tank; 14. a gasket; 15. A dust adsorbing net; 16. and heating the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 6, the present invention provides a technical solution: a desulfurization system for boiler flue gas treatment comprises a flue gas input pipe 1, one end of the flue gas input pipe 1 is in threaded connection with a dust filter cavity 2, a sealing gasket 14 is arranged inside the flue gas input pipe 1, one end of the dust filter cavity 2 is abutted against the side surface of the sealing gasket 14, a plurality of dust adsorption nets 15 are arranged inside the dust filter cavity 2, a flue gas conduction pipe 3 is fixedly connected to the side surface of the dust filter cavity 2, the other end of the flue gas conduction pipe 3 is fixedly connected with a desulfurization box 4, a sodium carbonate solvent adding pipe 5 is inserted into one side of the flue gas conduction pipe 3 on the upper surface of the desulfurization box 4, an exhaust pipe 6 is inserted into the other side of the flue gas conduction pipe 3 on the upper surface of the desulfurization box 4, a plugging mechanism 7 is arranged at the position, corresponding to the sodium carbonate solvent adding pipe 5, of the top of the inner surface of the desulfurization box 4, the plugging mechanism 7 comprises a limiting sliding groove 701, an, the adsorption solenoid 702 is sleeved with a plugging spring 703, the other end of the plugging spring 703 is fixedly connected with a sealing slide block 704, the side surface of the sealing slide block 704 is fixedly connected with an opening and closing magnet 705, the other side surface of a limit slide groove 701 is provided with a power-off switch 706, the upper surface of the sealing slide block 704 is provided with a rubber sealing pad, the bottom of the limit slide groove 701 is provided with an opening corresponding to the position of the sodium carbonate solvent adding pipe 5, the side wall of the inner surface of the desulfurization box 4 is provided with a plugging control mechanism 8, the plugging control mechanism 8 comprises a side slide groove 801, a T-shaped sliding plate 802 slides in the side slide groove 801, the bottom of the T-shaped sliding plate 802 is fixedly connected with a buoyancy bottle 803, the lower surface of the T-shaped sliding plate 802 is fixedly connected with an elastic ejector pin 804, the other end, the piezoresistor 805 is electrically connected with the adsorption solenoid 702, the desulfurization system for treating the boiler flue gas can automatically stop adding the solvent after adding the solvent in a proper amount in the using process of the desulfurization system for treating the boiler flue gas through the matching arrangement of the sodium carbonate solvent adding pipe 5, the plugging mechanism 7 and the plugging control mechanism 8, the solvent is prevented from being excessively added, in addition, sodium sulfite which is a product generated by the reaction of the sodium carbonate solvent and the sulfur dioxide can be used for a preservative, a reducing agent and the like so as to be fully utilized, thereby obtaining higher economic benefit, the lower surface of the desulfurization box 4 is spliced with the liquid guide pipe 10, the other end of the liquid guide pipe 10 is fixedly connected with the distillation box 11, the upper surface of the distillation box 11 is spliced with the gas guide pipe 12 at one side of the liquid guide pipe 10, the inner surface of the distillation box 11 is provided with the heating block 16, the interior of the, the heating control mechanism 9 comprises a temperature control spring 901, the temperature control spring 901 is fixedly connected to the side wall of the distillation box 11, the other end of the temperature control spring 901 is fixedly connected with a control magnet 902, a waterproof box 903 is arranged above the control magnet 902, an extension spring 904 is fixedly connected to the inner surface of the waterproof box 903, the other end of the extension spring 904 is fixedly connected with a power-on plate 905, a power-off solenoid 906 is arranged inside the power-on plate 905, the desulfurization system for treating the boiler flue gas is arranged, through the arrangement of the heating control mechanism 9, the desulfurization system for treating the boiler flue gas can control whether a heating block 16 is started or not according to the temperature in the distillation box 11 in the use process, the evaporation efficiency of sulfur dioxide gas in the solution is ensured, meanwhile, the crystal of sodium sulfite damaged in the solution is ensured not to be dehydrated and decomposed due to overhigh temperature, and the, the other end of the gas guide pipe 12 is fixedly connected with a condensation gas-collecting box 13.

When the desulfurization box 4 is used, the liquid draft tube 10 is provided with a controllable valve, when no solution exists in the desulfurization box 4, the valve on the liquid draft tube 10 is closed to supply power to the adsorption solenoid 702, the pressure on the piezoresistor 805 is higher than the gravity pressure of the T-shaped sliding plate 802, the buoyancy bottle 803 and the elastic ejector rod 804 in an initial state, so that the resistance value of the piezoresistor 805 is lower, the magnetic field generated by the higher current on the adsorption solenoid 702 is stronger, the sealing slide block 704 is in an open state under the action of the attraction force of the opening and closing magnet 705, the buoyancy generated by the buoyancy bottle 803 reduces the pressure borne by the piezoresistor 805 as the current on the adsorption solenoid 702 reduces the magnetic field and reduces the attraction force between the opening and closing magnet 705 as the resistance value of the piezoresistor 805 is increased, the sealing slide block 704 slides to one side of the power-off switch 706 under the action of the plugging spring, until the pipe orifice of the sodium carbonate solvent adding pipe 5 is completely blocked, the power-off switch 706 is pressed to cut off the power of the adsorption solenoid 702 so that the blocking mechanism 7 is always kept in a blocking state before the adsorption solenoid 702 is powered next time, the boiler flue gas firstly passes through the dust filter cavity 2 to filter dust in the flue gas, then enters the sodium carbonate solvent to be desulfurized, then passes through the exhaust pipe 6 to be further purified, after the sodium carbonate solvent in the desulfurization box 4 is used, a valve on the liquid guide pipe 10 is opened to enable the flue gas to flow into the distillation box 11, the heating block 16 is started to heat the liquid to enable the liquid to release sulfur dioxide gas, sodium sulfite crystals remaining after water evaporation is carried out along with heating can be recycled, in the heating process, when the temperature is too high, the temperature control spring 901 deforms to the upper control magnet 902 to enable the temperature control spring to be close to the waterproof box 903 so as to generate a suction effect on the power, the whole of the power-on plate 905 is pulled down, the binding post electrically connected with the heating block 16 on the power-on plate 905 is disconnected, so that the heating block 16 stops heating, and the power-on plate 905 resets again to heat the heating block 16 when the power-on plate 905 is powered on again when the control magnet 902 descends and the suction force between the power-off solenoids 906 is reduced under the action of the deformation of the temperature control spring 901 along with the temperature reduction.

The utility model discloses a theory of operation and beneficial effect: the desulfurization system for boiler flue gas treatment can automatically stop solvent addition after a proper amount of solvent is added in the using process through the matching arrangement of the sodium carbonate solvent adding pipe 5, the plugging mechanism 7 and the plugging control mechanism 8, prevent excessive solvent addition, fully utilize sodium sulfite which is a product of reaction of sodium carbonate solvent and sulfur dioxide and can be used as a preservative, a reducing agent and the like, and obtain higher economic benefit, and the desulfurization system for boiler flue gas treatment can control whether the heating block 16 is opened or not according to the temperature in the distillation box 11 in the using process through the arrangement of the heating control mechanism 9, ensure that the residual sodium sulfite crystals in the solution can not be dehydrated and decomposed by overhigh temperature while ensuring the evaporation efficiency of sulfur dioxide gas in the solution, the subsequent sodium sulfite recycling is more convenient.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A desulfurization system for boiler flue gas treatment, comprising a flue gas input pipe (1), characterized in that: one end of the flue gas input pipe (1) is in threaded connection with a dust filter chamber (2), the side face of the dust filter chamber (2) is fixedly connected with a flue gas conduction pipe (3), the other end of the flue gas conduction pipe (3) is fixedly connected with a desulfurization box (4), a sodium carbonate solvent adding pipe (5) is inserted into one side of the upper surface of the desulfurization box (4) which is positioned on the flue gas conduction pipe (3), an exhaust pipe (6) is inserted into the other side of the upper surface of the desulfurization box (4) which is positioned on the other side of the flue gas conduction pipe (3), a plugging mechanism (7) is arranged at the position, corresponding to the sodium carbonate solvent adding pipe (5), of the top of the inner surface of the desulfurization box (4), a plugging control mechanism (8) is arranged on the side wall of the inner surface of the desulfurization box (4), a liquid guide pipe (10) is inserted into the lower surface of the desulfurization box (4), and a distillation, the upper surface of the distillation box (11) is positioned at one side of the liquid guide pipe (10) and is spliced with a gas guide pipe (12), the inner surface of the distillation box (11) is provided with a heating block (16), the inside of the distillation box (11) is provided with a heating control mechanism (9), and the other end of the gas guide pipe (12) is fixedly connected with a condensation gas collection box (13).

2. The desulfurization system for boiler flue gas treatment according to claim 1, characterized in that: the inside of flue gas input tube (1) is equipped with sealed pad (14), the one end butt of dust filter chamber (2) is in the side of sealed pad (14), the inside of dust filter chamber (2) is equipped with a plurality of dust and adsorbs net (15).

3. The desulfurization system for boiler flue gas treatment according to claim 1, characterized in that: plugging mechanism (7) are including spacing sliding tray (701), the side fixedly connected with of spacing sliding tray (701) adsorbs solenoid (702), adsorption solenoid (702) have last cup jointed shutoff spring (703), the other end fixedly connected with of shutoff spring (703) seals slider (704), the side fixedly connected with who seals slider (704) opens and shuts magnet (705), the another side of spacing sliding tray (701) is equipped with power off switch (706), the upper surface that seals slider (704) is equipped with the rubber and seals the pad, the bottom of spacing sliding tray (701) is equipped with the opening corresponding with sodium carbonate solvent addition pipe (5) position.

4. The desulfurization system for boiler flue gas treatment according to claim 1, characterized in that: the plugging control mechanism (8) comprises a side sliding groove (801), a T-shaped sliding plate (802) slides in the side sliding groove (801), a buoyancy bottle (803) is fixedly connected to the bottom of the T-shaped sliding plate (802), an elastic ejector rod (804) is fixedly connected to the lower surface of the T-shaped sliding plate (802), and a piezoresistor (805) is abutted to the other end of the elastic ejector rod (804).

5. The desulfurization system for boiler flue gas treatment according to claim 4, characterized in that: the piezoresistor (805) is fixedly connected to the lower surface of the side sliding groove (801), and the piezoresistor (805) is electrically connected with the adsorption solenoid (702).

6. The desulfurization system for boiler flue gas treatment according to claim 1, characterized in that: the heating control mechanism (9) comprises a temperature control spring (901), the temperature control spring (901) is fixedly connected to the side wall of the distillation box (11), the other end of the temperature control spring (901) is fixedly connected with a control magnet (902), a waterproof box (903) is arranged above the control magnet (902), an extension spring (904) is fixedly connected to the inner surface of the waterproof box (903), the other end of the extension spring (904) is fixedly connected with a power-on plate (905), and a power-off solenoid (906) is arranged inside the power-on plate (905).