CN215372434U

CN215372434U - Flue gas recirculation preheating fuel and nitrogen reduction device for biomass boiler

Info

Publication number: CN215372434U
Application number: CN202121800996.6U
Authority: CN
Inventors: 李克庆; 刘强; 郑浩; 尚利国; 禚圆圆; 郑彩霞
Original assignee: Shandong Furan Environmental Protection Co ltd
Current assignee: Shandong Furan Environmental Protection Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-31
Anticipated expiration: 2031-08-04

Abstract

The utility model belongs to the technical field of flue gas treatment, in particular to a flue gas recycling preheating fuel and nitrogen reducing device for a biomass boiler, which comprises a filtering device for filtering gas and a recovery device for recovering and reusing the filtered gas, wherein the top of the recovery device is fixedly communicated with a fuel bin for burning the fuel, one side of the fuel bin is communicated with a fire outlet bin for discharging fire, the filtering device comprises a filtering cavity and filtering cotton for filtering, the filtering cotton is positioned at one side of the filtering cavity, an adsorption sponge for adsorbing and filtering filtrate is arranged in the filtering cavity, filtering screens for air inlet and air outlet are arranged at two sides of the filtering cavity, the residual heat in the flue gas can be recycled, and simultaneously the flue gas can be purified and filtered before being discharged to the atmosphere, the influence of the smoke discharge on the environment is reduced.

Description

Flue gas recirculation preheating fuel and nitrogen reduction device for biomass boiler

Technical Field

The utility model belongs to the technical field of flue gas treatment, and particularly relates to a flue gas recycling preheating fuel and nitrogen reduction device for a biomass boiler.

Background

The biomass boiler is a kind of boiler, and a boiler using biomass energy as fuel is called a biomass boiler and is divided into a biomass steam boiler, a biomass hot water boiler, a biomass hot blast stove, a biomass heat-conducting oil furnace, a vertical biomass boiler, a horizontal biomass boiler and the like.

SUMMERY OF THE UTILITY MODEL

However, the existing biomass boiler can generate a large amount of flue gas due to fuel combustion in the using process, often the flue gas containing harmful substances and impurities is directly discharged into the atmosphere, such as nitrogen, so that the nitrogen content in the air is increased, the air quality is reduced, and meanwhile, the ecological development of the nature is not facilitated. The utility model provides a flue gas recycling preheating fuel and nitrogen reducing device for a biomass boiler, which has the characteristics of recycling the waste heat in flue gas, purifying and filtering the flue gas before the flue gas is discharged to the atmosphere, and reducing the influence of the flue gas discharge on the environment.

The utility model provides the following technical scheme: a flue gas recirculation preheating fuel and nitrogen reduction device for a biomass boiler comprises a filtering device for filtering gas and a recovery device for recovering and reusing the filtered gas, wherein the top of the recovery device is fixedly communicated with a fuel bin for burning fuel, and one side of the fuel bin is communicated with a fire outlet bin for fire outlet, the filtering device comprises a filtering cavity for filtering and filtering cotton, the filter cotton is positioned at one side of the filter cavity, the interior of the filter cavity is provided with an adsorption sponge for adsorbing and filtering filtrate, and the both sides of filter chamber are equipped with the filter screen that is used for admitting air and giving vent to anger, recovery unit including be used for admitting air with carry gaseous stand pipe with be used for retrieving gas and carrying out the heated warehouses that preheats to fuel, just place in the bottom of stand pipe in the inside of heated warehouses.

Wherein, one side of the heating chamber connected with the guide pipe is provided with a separation net for separating and ventilating.

Wherein, one side of the recovery device is provided with an exhaust port for exhausting waste gas.

Wherein, filter equipment's top is articulated to be had and is convenient for change adsorb the sponge and play dirt-proof shield, just the bottom fixed connection of shield plays the dust plug that seals the effect.

Wherein, filter equipment's inside fixedly connected with be used for to adsorb the inside feed liquor pipe that adds the filtrate of sponge, just the position of feed liquor pipe with the position phase-match of dustproof stopper.

Wherein, the top of the bunker is fixedly communicated with an air outlet for discharging combustion gas.

And one side of the filtering device is fixedly connected with an air conveying pipe used for introducing air into the filtering device, and the bottom end of the air conveying pipe is communicated with the air outlet.

And the other side of the filtering device is fixedly communicated with an air inlet pipe for supplying air to the recovery device, and the bottom end of the air inlet pipe is communicated with the top of the guide pipe.

The utility model has the beneficial effects that: through the mutual matching of the filtering device and the recovery device, the smoke generated in the working process of the fuel bin can be filtered, harmful substances and nitrogen in the smoke are removed, the smoke with the nitrogen and impurities is prevented from being discharged into the atmosphere, the environment is prevented from being polluted, and the ecological development of the nature is not facilitated, the fuel can be more fully combusted, so that the utilization rate of the fuel can be improved to a greater extent, and the waste of resources is reduced.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

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

FIG. 2 is a schematic view of the recycling apparatus and the bunker of the present invention;

FIG. 3 is a schematic bottom view of the recycling apparatus of the present invention;

FIG. 4 is a schematic view of the structure of the filter device of the present invention;

FIG. 5 is an enlarged view of the detail A of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of the recycling apparatus of the present invention.

In the figure: 1. a filtration device; 11. a filter chamber; 111. a liquid inlet pipe; 12. adsorbing the sponge; 13. a filter screen; 14. filtering cotton; 15. a dust cover; 151. a dust plug; 16. a gas delivery pipe; 17. an air inlet pipe; 2. a recovery device; 21. a guide tube; 22. a heating chamber; 23. separating the net; 24. an exhaust port; 3. a fuel bunker; 31. an air outlet; 4. and (4) discharging the fire bin.

Detailed Description

Referring to fig. 1-6, the present invention provides the following technical solutions: a flue gas recirculation preheating fuel and nitrogen reduction device for a biomass boiler comprises a filtering device 1 for filtering gas and a recovery device 2 for recovering and reusing the filtered gas, wherein the top of the recovery device 2 is fixedly communicated with a fuel bin 3 for burning fuel, and one side of the fuel bin 3 is communicated with a fire outlet bin 4 for fire outlet, the filtering device 1 comprises a filtering cavity 11 for filtering and a filtering cotton 14, the filter cotton 14 is positioned at one side of the filter cavity 11, the interior of the filter cavity 11 is provided with an adsorption sponge 12 for adsorbing and filtering the filtrate, and the both sides of filter chamber 11 are equipped with the filter screen 13 that is used for admitting air and giving vent to anger, and recovery unit 2 is including being used for admitting air and conveying gaseous stand pipe 21 and being used for retrieving gas and carrying out the heated warehouses 22 that preheats to fuel, and the inside of heated warehouses 22 is built in the bottom of stand pipe 21.

In this embodiment: the filtering device 1 filters the flue gas discharged from the fuel bin 3 to remove nitrogen and impurities in the flue gas, wherein a filtering cavity 11 in the filtering device 1 can adsorb the nitrogen, and a filter cotton 14 can filter the impurities in the flue gas to reduce harmful substances in the flue gas, so as to avoid environmental pollution caused by the flue gas discharged into the air, when the flue gas is filtered in the filtering device 1, the flue gas enters the heating bin 22 through the guide pipe 21, because the heating bin 22 is positioned below the fuel bin 3, the heating bin 22 can preheat the fuel in the fuel bin 3, meanwhile, the temperature in the fuel bin 3 can be improved, the fuel combustion efficiency is improved, the fuel combusted in the fuel bin 3 is sprayed out through the fire bin 4, and the recovery device 2 can recycle the flue gas generated by the combustion of the fuel bin 3 before being discharged outside, the utilization ratio of the energy is improved, and the filtering device 1 can filter the smoke, so that the natural protection is facilitated.

A separation net 23 for separating and ventilating is arranged on one side of the heating chamber 22 connected with the guide pipe 21; when there is the wall between heating chamber 22 and the stand pipe 21, can be to gathering in the below of fuel bunker 3 that the gas that discharges from the stand pipe 21 is more concentrated, and when discharging the gas to the external world, the partition net 23 can produce certain resistance to the emission of gas, reduces the exhaust velocity of flue gas, can make have the exhaust of continuity under the circumstances of admitting air above, makes the working process safer.

One side of the recovery device 2 is provided with an exhaust port 24 for exhausting waste gas; wherein the exhaust port 24 is used for exhausting the gas in the heating chamber 22 to the outside.

The top of the filtering device 1 is hinged with a dustproof cover 15 which is convenient for replacing the adsorption sponge 12 and plays a role of dust prevention, and the bottom of the dustproof cover 15 is fixedly connected with a dustproof plug 151 playing a role of sealing; after adsorbing sponge 12 and using a period, staff's accessible shield 15 takes out the absorption sponge 12 in the filter chamber 11 and changes, and dust plug 151 can seal shield 15 when the non-interpolation liquid, keeps the cleanliness factor of feed liquor pipe 111 inner wall.

A liquid inlet pipe 111 for adding filter liquid into the adsorption sponge 12 is fixedly connected inside the filtering device 1, and the position of the liquid inlet pipe 111 is matched with the position of the dustproof plug 151; when only the filtering liquid for adsorbing nitrogen, such as the azotobacter liquid, needs to be added into the adsorption sponge 12 separately, the filtering liquid can be added into the adsorption sponge 12 through the liquid inlet pipe 111 with the end extending into the filter chamber 11.

The top of the fuel bin 3 is fixedly communicated with an air outlet 31 for discharging combustion gas; wherein the flue gas can be conveyed into the gas duct 16 via the gas outlet 31.

One side of the filtering device 1 is fixedly connected with an air pipe 16 for feeding air into the filtering device 1, and the bottom end of the air pipe 16 is communicated with the air outlet 31.

An air inlet pipe 17 for supplying air into the recovery device 2 is fixedly communicated with the other side of the filtering device 1, and the bottom end of the air inlet pipe 17 is communicated with the top of the guide pipe 21.

The working principle and the using process of the utility model are as follows: in the using process, the flue gas generated by the combustion of the fuel in the fuel bin 3 enters the filtering device 1 through the gas pipe 16, when the flue gas passes through the filtering device 1, the flue gas firstly passes through the filtering cavity 11, at the moment, the adsorption sponge 12 in the filtering cavity 11 adsorbs filtering liquid capable of removing and filtering nitrogen in the flue gas, when the flue gas passes through the adsorption sponge 12, the nitrogen in the flue gas can be remained in the adsorption sponge 12, and when the flue gas passes through the filter cotton 14, impurities in the flue gas can be filtered, and the flue gas after being filtered in the filtering device 1 enters the guide pipe 21 through the gas inlet pipe 17 and enters the heating bin 22 below the fuel bin 3 through the guide pipe 21, wherein the top plate of the heating bin 22 can be made of a material with a good heat conduction effect, so that the heat in the flue gas can be rapidly transferred to the fuel bin 3, at the moment, the fuel at the bottom in the fuel bin 3 can be preheated, can improve the speed of fuel burning simultaneously, compare in driven biomass boiler, can circulate the flue gas and recycle, improve the utilization ratio of resource, and can improve the speed of fuel burning simultaneously, after one section work, the staff accessible is opened the gas vent 24 and is discharged the flue gas in with the heated warehouses 22 to the outside air, avoids the gas concentration in the heated warehouses 22 too high to cause danger.

Claims

1. The utility model provides a flue gas recirculation preheats fuel and nitrogen reduction device for biomass boiler which characterized in that: the device comprises a filtering device for filtering gas and a recovery device for recovering and reusing the filtered gas, wherein the top of the recovery device is fixedly communicated with a fuel bin for burning fuel, and one side of the fuel bin is communicated with a fire outlet bin for discharging fire;

the filter device comprises a filter cavity and filter cotton, the filter cotton is positioned on one side of the filter cavity, adsorption sponge for adsorbing filtrate for filtering is arranged in the filter cavity, and filter screens for air inlet and outlet are arranged on two sides of the filter cavity;

the recovery unit is including being used for admitting air and gaseous stand pipe of conveying with be used for retrieving gaseous and carrying out the heated warehouses that preheats to fuel, just place in the bottom of stand pipe the inside of heated warehouses.

2. The flue gas recirculation preheating fuel and nitrogen reduction device for the biomass boiler according to claim 1, characterized in that: and a separation net for separating and ventilating is arranged on one side of the heating chamber connected with the guide pipe.

3. The flue gas recirculation preheating fuel and nitrogen reduction device for the biomass boiler according to claim 1, characterized in that: and one side of the recovery device is provided with an exhaust port for exhausting waste gas.

4. The flue gas recirculation preheating fuel and nitrogen reduction device for the biomass boiler according to claim 1, characterized in that: the top of the filtering device is hinged with a dustproof cover which is convenient to replace and adsorbs the sponge and plays a role of dust prevention, and the bottom of the dustproof cover is fixedly connected with a dustproof plug playing a role of sealing.

5. The flue gas recycling preheating fuel and nitrogen reduction device for the biomass boiler as recited in claim 4, wherein: the inside fixedly connected with of filter equipment be used for to adsorb the inside feed liquor pipe that adds the filtrate of sponge, just the position of feed liquor pipe with the position phase-match of dustproof stopper.

6. The flue gas recirculation preheating fuel and nitrogen reduction device for the biomass boiler according to claim 1, characterized in that: and the top of the fuel bin is fixedly communicated with a gas outlet for discharging combustion gas.

7. The flue gas recycling preheating fuel and nitrogen reduction device for the biomass boiler according to claim 6, characterized in that: one side of the filtering device is fixedly connected with a gas pipe used for introducing gas into the filtering device, and the bottom end of the gas pipe is communicated with the gas outlet.

8. The flue gas recycling preheating fuel and nitrogen reduction device for the biomass boiler according to claim 6, characterized in that: and the other side of the filtering device is fixedly communicated with an air inlet pipe for supplying air to the recovery device, and the bottom end of the air inlet pipe is communicated with the top of the guide pipe.