CN207422256U - A coal-fired power generation boiler flue gas waste heat recovery and utilization device - Google Patents

Abstract

The utility model discloses a coal fired power generation boiler flue gas waste heat recovery utilizes device, including boiler and chimney, the chimney is located boiler one side, be provided with the drainage room between boiler and the chimney, fixedly connected with hot-blast main between boiler and the drainage room, and hot-blast main middle part fixed mounting has a condenser, drainage room internally mounted has steam generator, drainage room side fixed mounting has the air pump, and air pump one side is provided with the steam pipe. The utility model discloses simple structure is convenient for purify the flue gas, avoids discharging into the air, and the contaminated air, and can effectively keep pipeline security, can effectively convert the hot steam of pipeline inner wall and the partial hot steam in the flue gas into liquid to inside the steam suction boiler is turned into in inferior heating, realize steam reuse, reduce calorific loss, be favorable to improving work efficiency, convenient operation.

Description

A coal-fired power generation boiler flue gas waste heat recovery and utilization device

technical field

The utility model relates to the technical field of a coal-fired power generation boiler, in particular to a device for recovering and utilizing the waste heat of the coal-fired power generation boiler flue gas.

Background technique

Power plant boilers, in layman's terms, are boilers used by power plants to generate electricity, and the biggest loss in existing coal-fired power generation is the heat loss from boiler exhaust, which is one of the main reasons for the low heat utilization efficiency of power plant boilers.

At present, most of the flue gas waste heat recovery and utilization devices of coal-fired power generation boilers use water for heat exchange, which causes waste of water and high operating costs, and the existing flue gas waste heat recovery and utilization devices of coal-fired power generation boilers cannot filter out the waste heat in the flue gas. Harmful substances, and part of the flue gas is discharged into the air, thereby polluting the air. The water vapor mixed in the flue gas cannot be timely, the working cycle is long, and the purification is low. For this reason, we propose a waste heat recovery and utilization device for coal-fired power boiler flue gas.

Utility model content

The main purpose of the utility model is to provide a waste heat recovery device for coal-fired power generation boiler flue gas, which has a simple structure, is convenient for purifying the flue gas, avoids exhausting into the air and polluting the air, and can effectively maintain the safety of the pipeline, and can effectively Convert the hot steam on the inner wall of the pipeline and part of the hot steam in the flue gas into liquid, and convert it into steam after secondary heating and pump it into the boiler to realize steam reuse and reduce heat loss, which is conducive to improving work efficiency. It is easy to operate and can be effectively Solve the problems in the background technology.

In order to achieve the above object, the technical scheme that the utility model takes is:

A coal-fired power generation boiler flue gas waste heat recovery and utilization device, including a boiler and a chimney, the chimney is located on one side of the boiler, a water filter room is arranged between the boiler and the chimney, and the boiler and the water filter room are fixedly connected There is a hot air pipe, and a condenser is fixedly installed in the middle of the hot air pipe, a steam generator is installed inside the water filter chamber, an air pump is fixedly installed on the side of the water filter chamber, and a steam pipe is installed on one side of the air pump , and the filter chamber is fixedly connected to the boiler through the steam pipe on one side of the air pump.

Further, a vulcanized filter layer and a bag filter are fixedly connected between the hot air pipe and the boiler, and the bag filter is arranged on the top of the vulcanized filter layer, and a dust discharge hole is provided on one side of the bag filter.

Further, a flue gas channel is provided on one side of the water filter chamber, an exhaust pipe is fixedly connected to one side of the hot air pipe, and an induced draft fan is fixedly installed in the middle of the exhaust pipe, and the hot air pipe passes through the exhaust pipe. The pipeline communicates with the flue gas channel.

Further, an activated carbon adsorption layer is installed on the inner wall of the flue gas channel, and an ultrafiber filter membrane is arranged on one side of the activated carbon adsorption layer.

Compared with the prior art, the utility model has the following beneficial effects:

1. By using the vulcanized filter layer, it is convenient to absorb and filter sulfur dioxide in the flue gas, avoid being discharged into the air and pollute the air, and can effectively maintain the safety of the pipeline to avoid corrosion of the pipeline, and then dedust the flue gas after desulfurization , and use the bag dust collector to connect to an external power supply and operate independently, which is convenient for separating impurities and harmful particles in the flue gas.

2. By using the condenser, the hot steam on the inner wall of the pipe and part of the hot steam in the flue gas can be effectively converted into liquid and flow into the water filter room connected to the bottom of the hot air pipe for filtration, combined with the liquid inside the water filter room in the steam The generator converts the liquid into hot steam. Since the air pump is connected in series on one side of the water filter chamber, it is convenient to pump the steam into the steam pipe and then into the boiler, so as to realize the reuse of steam, reduce heat loss, and improve work efficiency.

3. By using the inner wall of the flue gas channel to install an activated carbon adsorption layer, it is convenient to remove the smell in the flue gas. At the same time, combined with the ultra-fiber filter membrane, the gas can be filtered again to ensure the quality of the exhaust gas.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model coal-fired power generation boiler flue gas waste heat recovery and utilization device.

Fig. 2 is a schematic diagram of the flue gas channel structure of the utility model coal-fired power generation boiler flue gas waste heat recovery and utilization device.

In the figure: 1. Boiler; 2. Vulcanized filter layer; 3. Bag filter; 4. Hot air pipe; 5. Condenser; 6. Water filter room; 7. Steam generator; 8. Flue gas channel; 9. Chimney; 10. Air pump; 11. Exhaust pipe; 12. Induced fan; 13. Steam pipe; 14. Dust discharge hole; 15. Activated carbon adsorption layer; 16. Ultrafiber filter membrane.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Figure 1-2, a coal-fired power generation boiler flue gas waste heat recovery and utilization device includes a boiler 1 and a chimney 9, the chimney 9 is located on the side of the boiler 1, and a filter is arranged between the boiler 1 and the chimney 9 A water chamber 6, a hot air pipe 4 is fixedly connected between the boiler 1 and the water filter chamber 6, and a condenser 5 is fixedly installed in the middle of the hot air pipe 4, and a steam generator 7 is installed inside the water filter chamber 6 An air pump 10 is fixedly installed on the side of the water filter chamber 6, and a steam pipe 13 is arranged on one side of the air pump 10, and the water filter chamber 6 is fixedly connected to the boiler 1 through the steam pipe 13 on the side of the air pump 10.

Wherein, the vulcanization filter layer 2 and the bag filter 3 are fixedly connected between the hot air pipe 4 and the boiler 1, and the bag filter 3 is arranged on the top of the vulcanization filter layer 2, and the side of the bag filter 3 is provided with an exhaust Dust holes14.

Wherein, one side of the water filter chamber 6 is provided with a flue gas passage 8, one side of the hot air pipe 4 is fixedly connected with an exhaust pipe 11, and the middle part of the exhaust pipe 11 is fixedly installed with an induced draft fan 12, and the heat The air pipe 4 communicates with the flue gas passage 8 through the exhaust pipe 11 .

Wherein, an activated carbon adsorption layer 15 is installed on the inner wall of the flue gas channel 8 , and an ultrafiber filter membrane 16 is arranged on one side of the activated carbon adsorption layer 15 .

It should be noted that the utility model is a waste heat recovery device for coal-fired power generation boiler flue gas. When working, the flue gas generated by the boiler first passes through the vulcanized filter layer 2 on the top, which is convenient for absorbing and filtering sulfur dioxide in the flue gas. Avoid discharge into the air and pollute the air, and can effectively maintain the safety of the pipeline, avoid corrosion of the pipeline, and then dedust the flue gas after desulfurization, and use the bag filter 3 to connect to an external power supply and operate independently, which is convenient for separating the dust in the flue gas Impurities and harmful particles are discharged through the dust discharge hole 14. Since the hot air pipe 4 is installed on the top of the bag filter 3, it is convenient to pass the filtered gas into the inside of the pipe, and the condenser is connected in series in the middle of the hot air pipe 4. 5. It can effectively convert the hot steam on the inner wall of the pipeline and part of the hot steam in the flue gas into liquid and flow into the water filter chamber 6 connected to the bottom end of the hot air pipe 4 for filtering. In order to convert into gas, it passes through the hot air pipe 4- The induced draft fan 12 installed on the side is sucked into the interior of the exhaust pipe 11, and finally enters the flue gas channel 8, and an activated carbon adsorption layer 15 is arranged on the inner wall of the flue gas channel 8 to facilitate the removal of the smell in the flue gas. 16. The gas can be filtered again to ensure the quality of the discharged gas, and the liquid inside the water filter chamber 6 is converted into hot steam by the steam generator 7. Since the air pump 10 is connected in series to one side of the water filter chamber 6, it is convenient to remove The steam is pumped into the steam pipe 13 and enters the boiler again to realize steam reuse, reduce heat loss, and help improve work efficiency. The specific model of the bag filter 3 is DMC24, the specific model of the condenser 5 is KRDZ, and the steam generator 7 The specific model used is SG01-SG-3.5KW, the specific model used for the air pump 10 is MPQ902, and the bag filter 3, condenser 5, steam generator 7 and air pump 10 are all energized and run independently without affecting each other.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A coal-fired power generation boiler flue gas waste heat recovery and utilization device, comprising a boiler (1) and a chimney (9), the chimney (9) is located on the side of the boiler (1), characterized in that: the boiler (1) A water filter chamber (6) is arranged between the chimney and the chimney (9), and a hot air pipe (4) is fixedly connected between the boiler (1) and the water filter chamber (6), and the middle part of the hot air pipe (4) A condenser (5) is fixedly installed, a steam generator (7) is installed inside the water filter chamber (6), an air pump (10) is fixedly installed on the side of the water filter chamber (6), and the air pump (10 ) is provided with a steam pipe (13) on one side, and the filter chamber (6) is fixedly connected to the boiler (1) through the steam pipe (13) on one side of the air pump (10). 2. A coal-fired power generation boiler flue gas waste heat recovery and utilization device according to claim 1, characterized in that: a vulcanized filter layer (2) is fixedly connected between the hot air pipe (4) and the boiler (1) and a bag filter (3), and the bag filter (3) is arranged on the top of the vulcanized filter layer (2), and a dust discharge hole (14) is arranged on one side of the bag filter (3). 3. A coal-fired power generation boiler flue gas waste heat recovery and utilization device according to claim 1, characterized in that: a flue gas channel (8) is provided on one side of the water filter chamber (6), and the hot air pipe (4) An exhaust pipe (11) is fixedly connected to one side, and an induced draft fan (12) is fixedly installed in the middle of the exhaust pipe (11). The air channel (8) is connected. 4. A coal-fired power generation boiler flue gas waste heat recovery and utilization device according to claim 3, characterized in that: the inner wall of the flue gas channel (8) is equipped with an activated carbon adsorption layer (15), and the activated carbon adsorption layer ( 15) One side is provided with an ultrafiber filter membrane (16).