CN209752544U - A boiler tail gas treatment equipment - Google Patents

Abstract

The utility model discloses a boiler tail gas treatment equipment, which comprises an anti-scaling device, a wet tail gas purification device and a high-pressure electrolysis device connected in sequence; A horizontally arranged rotating shaft is provided, and one end of the rotating shaft is fixed with a spiral scraper through a plurality of connecting blocks. A dust collection box for collecting dust; the other end of the rotating shaft passes through one end of the exhaust gas inlet pipe and is driven by a micro motor arranged outside it. The utility model combines absorption and electrolysis, multi-stage purification, greatly enhances the purification effect on boiler tail gas, and has great environmental protection value; at the same time, it realizes the regular removal of soot in the tail gas inlet pipe to avoid fouling and blockage of pipes.

Description

A boiler tail gas treatment equipment

technical field

The invention relates to the field of industrial tail gas treatment, in particular to boiler tail gas treatment equipment.

Background technique

At present, various boilers are not only widely used in industry, but also more and more widely used in people's daily life. The main emissions from boiler combustion are sulfur dioxide and dust, among which sulfur dioxide is one of the main pollutants that cause acid rain. . Therefore, the discharge of boiler tail gas is a problem that people have been paying attention to. If the discharge is not clean, it will inevitably cause damage to nature. If the discharge of other harmful substances is not clean, it will also cause damage to nature.

At present, there are a large number of devices for purifying boiler exhaust gas, which are mostly treated by adsorption, and the treatment method is very rough, resulting in a large amount of harmful substances being discharged into the air, which brings huge hidden dangers to people's health and the ecological environment; and the exhaust pipe Scaling and clogging often occur due to long-term use, which requires shutdown and cleaning, which affects production efficiency.

Contents of the invention

The purpose of the present invention is to provide a boiler tail gas treatment equipment to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A boiler tail gas treatment equipment, including an anti-scaling device, a wet tail gas purification device and a high-pressure electrolysis device connected in sequence;

The anti-fouling device includes an exhaust gas inlet pipe connected to the boiler. A horizontally arranged rotating shaft is arranged inside the exhaust gas inlet pipe. A spiral scraper is fixed at one end of the rotating shaft through a plurality of connecting blocks, and the spiral scraper is set outside the rotating shaft and Against the inner wall of the exhaust gas inlet pipe, a dust collection box for collecting dust is arranged on the exhaust gas inlet pipe below the end of the rotating shaft; the other end of the rotating shaft passes through one end of the exhaust gas inlet pipe and is driven by a micro motor arranged outside it;

The wet-type exhaust gas purification device is a wet-type spray tower, the lower end of the wet-type spray tower communicates with the tail gas inlet pipe near the end of the micro-motor through a connecting pipe, and the upper end of the wet-type spray tower is provided with an exhaust gas discharge pipe;

The high-voltage electrolysis device is arranged in the tail gas discharge pipe, and the high-voltage electrolysis device includes a pair of high-voltage electrode plates fixed on the inner wall of the tail gas discharge pipe. The high-voltage electrode plates are electrically connected to the high-voltage generator through wires, and the high-voltage generator It is arranged outside the tail gas discharge pipe, and an adsorption plate is arranged in the tail gas discharge pipe above the high-pressure electrolysis device.

As a further solution of the present invention: the lower end of the dust collection box is provided with a detachable cover.

As a further solution of the present invention: the wet spray tower includes a purification tower, and the absorption liquid used for purifying boiler tail gas is stored in the purification tower.

As a further solution of the present invention: the outer lower end of the purification tower is provided with a liquid pump, the water inlet of the liquid pump is connected to the purification tower, and the water outlet of the liquid pump is connected to a plurality of nozzles at the top of the purification tower through a spray pipe. Connected, the nozzle is set downwards.

As a further solution of the present invention: a honeycomb ceramic reaction layer is arranged in the purification tower between the spray head and the liquid surface of the absorption liquid.

As a further solution of the present invention: the water outlet of the liquid pump is provided with a diverter valve, one outlet of the diverter valve is connected to the spray pipe, the other outlet of the diverter valve is connected to the circulating water pipe, and the circulating water pipe is connected to the other One end communicates with the lower end of the purification tower through a venturi tube, and the throat of the venturi tube communicates with a communication pipe.

As a further solution of the present invention: the communication pipe is provided with a one-way valve.

As a further solution of the present invention: a water-absorbing and air-permeable plate is arranged in the tail gas discharge pipe below the high-voltage electrolysis device.

As a further solution of the present invention: the adsorption plate is an activated carbon adsorption plate.

Compared with the prior art, the beneficial effect of the present invention is: when in use, the tail gas enters the wet spray tower through the tail gas inlet pipe and the connecting pipe, enters the tail gas discharge pipe after preliminary purification in the wet spray tower, and starts the high-pressure electrolysis device, The harmful components of the exhaust gas are electrolyzed into solid particles and oxygen, and finally when passing through the adsorption plate, the harmful solid particles are adsorbed and fixed in it, while the beneficial oxygen and a small amount of exhaust gas are discharged into the air through the exhaust gas outlet, making the harmful The material is obviously reduced, which has great environmental protection value; a micro-motor is installed, and when the exhaust gas inlet pipe is blocked, the micro-motor is started, and the spiral scraper rotates under the drive of the rotating shaft, scraping off the soot stuck in the exhaust gas inlet pipe and directional transmission to make the dust It falls into the dust collection box to realize the regular removal of soot and avoid fouling and blockage of the exhaust gas inlet pipe.

To sum up, the present invention greatly enhances the purifying effect on boiler tail gas by combining absorption and electrolysis, multi-stage purification, and has great environmental protection value; at the same time, it realizes the regular removal of soot in the tail gas inlet pipe, avoiding the Scale clogs pipes.

Description of drawings

Figure 1 is a schematic structural diagram of boiler tail gas treatment equipment.

In the figure: 1- exhaust gas inlet pipe, 2- dust collection box, 3- micro motor, 4- rotating shaft, 5- connecting block, 6- spiral scraper, 7- connecting pipe, 8- one-way valve, 9- venturi tube , 10-circulating water pipe, 11-diverter valve, 12-liquid pump, 13-purification tower, 14-spray pipe, 15-honeycomb ceramic reaction layer, 16-nozzle, 17-tail gas discharge pipe, 18-water-absorbing and ventilating board, 19-insulating layer, 20-high voltage electrode plate, 21-high voltage generator, 22-adsorption plate.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1, a boiler tail gas treatment equipment, including an anti-scaling device, a wet tail gas purification device and a high-pressure electrolysis device connected in sequence;

The anti-scaling device includes an exhaust gas inlet pipe 1 communicated with the boiler. A horizontally arranged rotating shaft 4 is arranged inside the exhaust gas inlet pipe 1. A spiral scraper 6 is fixed at one end of the rotating shaft 4 through a plurality of connecting blocks 5. The The spiral scraper 6 is set on the outside of the rotating shaft 4 and against the inner wall of the exhaust gas inlet pipe 1. The exhaust gas inlet pipe 1 located below the end of the rotating shaft 4 is provided with a dust collection box 2 for collecting dust; the other end of the rotating shaft 4 passes through the exhaust gas inlet. One end of the tube 1 is driven by a micro motor 3 arranged outside it;

The wet-type exhaust gas purification device is a wet-type spray tower, the lower end of the wet-type spray tower communicates with the tail gas inlet pipe 1 close to the end of the micro-motor 3 through the connecting pipe 7, and the upper end of the wet-type spray tower is provided with an exhaust gas discharge pipe 17 ;

The high-voltage electrolysis device is arranged in the tail gas discharge pipe 17, and the high-voltage electrolysis device includes a pair of high-voltage electrode plates 20 fixed on the inner wall 17 of the tail gas discharge pipe, and the high-voltage electrode plates 20 are electrically connected to the high-voltage generator 21 through wires. , the high-voltage generator 21 is arranged outside the tail gas discharge pipe 17, and an adsorption plate 22 is arranged inside the tail gas discharge pipe 17 above the high-pressure electrolysis device.

The working principle of the present invention is: when in use, the tail gas enters the wet spray tower through the tail gas inlet pipe 1 and the connecting pipe 7, enters the tail gas discharge pipe 17 after preliminary purification in the wet spray tower, starts the high-pressure electrolysis device, and the harmfulness of the tail gas The components are electrolyzed into solid particles and oxygen, and finally when they pass through the adsorption plate 22, the harmful solid particles are adsorbed and fixed in it, while the beneficial oxygen and a small amount of exhaust gas are discharged into the air through the exhaust gas outlet, so that the harmful substances are clearly reduction, which has great environmental protection value; a micro motor 3 is set, and when the exhaust gas inlet pipe 1 is blocked, the micro motor 3 is started, and the spiral scraper 6 rotates under the drive of the rotating shaft 4, scraping off the soot adhering to the exhaust gas inlet pipe 1 and The directional transmission makes the dust fall into the dust collection box 2, realizes the regular removal of soot, and avoids fouling and blockage of the tail gas inlet pipe.

As an optional solution, the lower end of the dust collection box 2 is provided with a detachable cover, which is convenient for cleaning the accumulated dust in the dust collection box 2 .

As an optional solution, the wet spray tower includes a purification tower 13, and the purification tower 13 stores absorption liquid for purifying boiler exhaust gas.

As an optional solution, the outer lower end of the purification tower 13 is provided with a liquid pump 12, the water inlet of the liquid pump 12 communicates with the purification tower 13, and the water outlet of the liquid pump 12 communicates with the water in the purification tower 13 through the spray pipe 14. A plurality of nozzles 16 at the top are connected, and the nozzles 16 are arranged downwards, so that the nozzles 16 are sprayed and absorbed to improve the absorption and purification effect of exhaust gas.

As an optional solution, a honeycomb ceramic reaction layer 15 is arranged in the purification tower 13 between the spray head 16 and the liquid surface of the absorption liquid, so as to delay the absorption time of the tail gas and further improve the purification effect.

As an optional solution, the water outlet of the liquid pump 12 is provided with a diverter valve 11, one outlet of the diverter valve 11 communicates with the spray pipe 14, and the other outlet of the diverter valve 11 communicates with the circulating water pipe 10, so The other end of the circulating water pipe 10 communicates with the lower end of the purification tower 13 through the venturi tube 9 , and the throat of the venturi tube 9 communicates with the communicating pipe 7 . During use, the high-pressure liquid produced by the liquid pump 12 generates negative pressure when it passes through the throat of the venturi tube 9, sucks the flue gas in the connecting pipe 7 and the tail gas inlet pipe 1, and makes the flue gas flow in the absorption liquid of the purification tower 13. Generate a large number of bubbles, increase the contact area between the flue gas and the liquid, enhance the purification effect, and reduce the use of the induced draft fan on the connecting pipe 7, saving energy and cost.

As an optional solution, the communication pipe 7 is provided with a one-way valve 8 to prevent the liquid from flowing backward.

As an optional solution, a water-absorbing and air-permeable plate 18 is arranged in the tail gas discharge pipe 17 below the high-pressure electrolysis device.

As an optional solution, the adsorption plate 22 is an activated carbon adsorption plate.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. A boiler tail gas treatment equipment, characterized in that it comprises an anti-scaling device, a wet tail gas purification device and a high-voltage electrolysis device connected in sequence; The anti-fouling device includes an exhaust gas inlet pipe connected to the boiler. A horizontally arranged rotating shaft is arranged inside the exhaust gas inlet pipe. A spiral scraper is fixed at one end of the rotating shaft through a plurality of connecting blocks, and the spiral scraper is set outside the rotating shaft and Against the inner wall of the exhaust gas inlet pipe, a dust collection box for collecting dust is arranged on the exhaust gas inlet pipe below the end of the rotating shaft; the other end of the rotating shaft passes through one end of the exhaust gas inlet pipe and is driven by a micro motor arranged outside it; The wet-type exhaust gas purification device is a wet-type spray tower, the lower end of the wet-type spray tower communicates with the tail gas inlet pipe close to one end of the micro-motor through a connecting pipe, and the upper end of the wet-type spray tower is provided with an exhaust gas discharge pipe; The high-voltage electrolysis device is arranged in the tail gas discharge pipe, and the high-voltage electrolysis device includes a pair of high-voltage electrode plates fixed on the inner wall of the tail gas discharge pipe. The high-voltage electrode plates are electrically connected to the high-voltage generator through wires, and the high-voltage generator It is arranged outside the tail gas discharge pipe, and an adsorption plate is arranged in the tail gas discharge pipe above the high-pressure electrolysis device. 2. The boiler tail gas treatment equipment according to claim 1, characterized in that a detachable cover is provided at the lower end of the dust collection box. 3. The boiler tail gas treatment equipment according to claim 1, characterized in that, the wet spray tower comprises a purification tower, and the absorption liquid for purifying boiler tail gas is stored in the purification tower. 4. The boiler tail gas treatment equipment according to claim 3, wherein a liquid pump is arranged at the outer lower end of the purification tower, the water inlet end of the liquid pump communicates with the purification tower, and the water outlet end of the liquid pump is sprayed The pipe communicates with a plurality of nozzles at the top of the purification tower, and the nozzles are arranged downward. 5. The boiler tail gas treatment equipment according to claim 4, characterized in that, a honeycomb ceramic reaction layer is arranged in the purification tower between the nozzle and the liquid surface of the absorption liquid. 6. The boiler tail gas treatment equipment according to claim 4, wherein a diverter valve is provided at the water outlet of the liquid pump, one water outlet of the diverter valve communicates with the spray pipe, and the other water outlet of the diverter valve It communicates with the circulating water pipe, and the other end of the circulating water pipe communicates with the lower end of the purification tower through a venturi tube, and the throat of the venturi tube communicates with the communicating pipe. 7. The boiler tail gas treatment equipment according to claim 6, characterized in that a check valve is arranged on the communicating pipe. 8. The boiler tail gas treatment equipment according to claim 1, characterized in that a water-absorbing and breathable plate is arranged in the tail gas discharge pipe below the high-pressure electrolysis device. 9. The boiler tail gas treatment equipment according to claim 1, characterized in that, the adsorption plate is an activated carbon adsorption plate.