CN220852188U - Ash removing device for flue gas pipeline - Google Patents

Abstract

The application provides a flue gas pipeline ash removal device, which comprises: the dust removing pipeline, one end of which is used for communicating with the smoke outlet of the furnace body; the ash removal assembly comprises an air storage tank, a pulse valve, a heat exchanger and an injection pipe; the air inlet of the pulse valve is communicated with the air storage tank, the air outlet of the pulse valve is communicated with the cold medium inlet of the heat exchanger, the cold medium outlet of the heat exchanger is communicated with one end of the blowing pipe, and the other end of the blowing pipe is communicated with the pipeline to be cleaned; the heat medium inlet of the heat exchanger is communicated with a heat source through a first pipeline, and the heat medium outlet of the heat exchanger is used for discharging hot gas in the heat exchanger. The application avoids manual ash removal, ensures the timely discharge of the flue gas in the furnace body, improves the production efficiency and the ash removal efficiency in the furnace body, reduces the temperature difference between the gas entering the pipeline to be ash removed and the high-temperature flue gas in the pipeline to be ash removed, and avoids that part of the gas in the high-temperature flue gas is condensed into water vapor and the dust particles in the high-temperature flue gas to be mixed and then adhered to the pipeline to be ash removed as far as possible.

Description

Ash removing device for flue gas pipeline

Technical Field

The application relates to a dust removing technology, in particular to a dust removing device for a flue gas pipeline.

Background

The fluidized bed furnace is a coal-fired boiler, has wide adaptability to coal types, and can burn various coals such as bituminous coal, anthracite, lignite, gangue and the like. The working principle of the fluidized bed furnace is that pulverized coal with a certain granularity is blown up by wind and burned in a boiling state at a certain height of a hearth, a large amount of high-temperature flue gas is generated by burning coal in the fluidized bed furnace, the temperature of the high-temperature flue gas is 850-1050 ℃, the high-temperature flue gas is discharged through a smoke exhaust pipeline on the high-temperature flue gas, and then the high-temperature flue gas discharged from the smoke exhaust pipeline is subjected to waste heat utilization, dust removal, purification and other treatments.

However, along with the progress of combustion process in the fluidized bed furnace, a large amount of flue gas that the fluidized bed furnace combustion produced is constantly discharged through the flue gas pipeline, and the high temperature flue gas in the flue gas pipeline has not passed through dust collector yet, wherein the dust content that contains is big, accompanies vapor simultaneously, make dust and the dust adhesion that mixes vapor on the inner wall of flue gas pipeline and the kink of flue gas pipeline, and then make flue gas pipeline take place to block up, make the flue gas in the fluidized bed furnace be difficult to discharge, cause the great danger of cracking that takes place of atmospheric pressure in the fluidized bed furnace, and in order to ensure the normal clear of in-process of combustion in the fluidized bed furnace, need the periodic manual deashing, and manual deashing just need pause the fluidized bed furnace and have a large amount of gas leakage in the deashing process, thereby influence the normal production of fluidized bed furnace and can cause serious potential safety hazard. Therefore, the application provides a pipeline ash removing device.

Disclosure of utility model

The application provides a flue gas pipeline ash removal device which is used for solving the technical problems described in the background technology.

In order to solve the technical problems, the application is realized by adopting the following technical scheme:

the application provides a flue gas pipeline ash removal device, which comprises:

The device comprises a to-be-cleaned dust pipe, a dust removing pipe and a dust removing pipe, wherein one end of the to-be-cleaned dust pipe is used for being communicated with a smoke outlet of a furnace body;

The ash removal assembly comprises an air storage tank, a pulse valve, a heat exchanger and an injection pipe; the air inlet of the pulse valve is communicated with the air storage tank, the air outlet of the pulse valve is communicated with the cold medium inlet of the heat exchanger, the cold medium outlet of the heat exchanger is communicated with one end of the blowing pipe, and the other end of the blowing pipe is communicated with the pipeline to be cleaned;

The heat medium inlet of the heat exchanger is communicated with a heat source through a first pipeline, and the heat medium outlet of the heat exchanger is used for discharging hot gas in the heat exchanger.

Optionally, the other end of waiting the deashing pipeline is linked together and is had the settling chamber, the settling chamber has the dust remover through the second pipeline intercommunication, the gas outlet of dust remover has the flue gas purification subassembly through the third pipeline intercommunication, the intercommunication has the fourth pipeline on the pipe shaft of third pipeline, the fourth pipeline keep away from the one end of third pipeline with the hot gas source intercommunication.

Optionally, the heat medium outlet of the heat exchanger is communicated with the flue gas purification assembly through a fifth pipeline.

Optionally, a first gas flow regulating valve is arranged on the first pipeline;

and a second gas flow regulating valve is arranged on the fourth pipeline.

Optionally, a pressure alarm is arranged on the air storage tank;

The top of gas holder intercommunication has the pressure release pipeline, be provided with the relief valve on the pressure release pipeline.

Optionally, a filter screen is arranged at one end of the blowing pipe, which is communicated with the pipeline to be cleaned, and a check valve is arranged on the blowing pipe.

Optionally, the other end of the blowing pipe is communicated with the to-be-cleaned ash pipeline through a flange.

According to the flue gas pipeline ash removal device provided by the application, the ash removal process is controlled by opening and closing the pulse valve and adjusting the opening of the pulse valve according to ash removal requirements of the pipeline to be ash removed, and the air pressure entering the pipeline to be ash removed through the air storage tank, the pulse valve, the heat exchanger and the jetting pipe can be used for flushing the pipeline to be ash removed periodically or timely through high-pressure air while the furnace body normally operates, so that the aim of ash removal of the pipeline to be ash removed is fulfilled, manual ash removal is avoided, timely discharge of flue gas in the furnace body is ensured, and the production efficiency and ash removal efficiency in the furnace body are improved. In addition, the flue gas entering the pulse valve from the gas outlet of the pulse valve is heated through the heat exchanger, and then the heated flue gas is blown into the pipeline to be cleaned through the blowing pipe, so that the temperature difference between the gas entering the pipeline to be cleaned and the high-temperature flue gas in the pipeline to be cleaned is reduced, the phenomenon that part of gas in the high-temperature flue gas is condensed into water vapor and dust particles in the high-temperature flue gas to be mixed and then adhered to the pipeline to be cleaned is avoided, the heated high-pressure gas flushes dust on the pipeline to be cleaned, and the dust particles on the pipeline to be cleaned are cleaned, so that the dust cleaning efficiency of the pipeline to be cleaned is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a flue gas duct ash removal device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a soot cleaning device for flue gas pipeline according to another embodiment of the present application;

fig. 3 is a schematic structural diagram of a soot cleaning device for flue gas pipeline according to another embodiment of the present application.

In the figure: 100. a pipe to be cleaned; 101. a settling chamber; 200. a furnace body; 201. a control cabinet; 2011. a control button; 300. an ash removal component; 301. a gas storage tank; 3011. a pressure alarm; 3012. a pressure relief conduit; 302. a pulse valve; 303. a heat exchanger; 304. a blowing pipe; 3041. a non-return valve; 400. a first pipe; 401. a hot air source; 402. a first gas flow regulating valve; 500. a second pipe; 501. a dust remover; 600. a third conduit; 601. a flue gas cleaning assembly; 602. a fourth conduit; 6021. a second gas flow regulating valve; 700. a fifth pipe; 900. a safety valve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are also within the scope of the application.

Referring to fig. 1 to 3, the present application provides a flue gas duct ash removal device, comprising:

The device comprises a to-be-cleaned dust pipe 100, wherein one end of the to-be-cleaned dust pipe 100 is used for being communicated with a smoke outlet of the furnace body 200; the high-temperature flue gas in the furnace body 200 is discharged out of the furnace body 200 through the flue gas to be cleaned 100 communicated with the flue gas outlet on the flue gas to be cleaned, one end of the flue gas to be cleaned 100 far away from the furnace body 200 can be communicated with a waste heat utilization device, a dust removal device, a flue gas purification device and the like, and the flue gas to be cleaned can be set according to actual needs.

The ash removal assembly 300, the ash removal assembly 300 comprises an air storage tank 301, a pulse valve 302, a heat exchanger 303 and an injection pipe 304; the air inlet of the pulse valve 302 is communicated with the air storage tank 301, the air outlet of the pulse valve 302 is communicated with the cold medium inlet of the heat exchanger 303, the cold medium outlet of the heat exchanger 303 is communicated with one end of the injection pipe 304, and the other end of the injection pipe 304 is communicated with the pipeline 100 to be cleaned; the high-pressure gas is stored in the gas storage tank 301 and can be compressed by a compressor, so that the pressure of the gas entering the to-be-cleaned pipeline 100 is increased, dust particles on the to-be-cleaned pipeline 100 are more easily blown off, the blown dust particles in the to-be-cleaned pipeline 100 are discharged out of the to-be-cleaned pipeline 100 along with the flow of high-temperature flue gas in the to-be-cleaned pipeline 100, the gas inlet of the pulse valve 302 is communicated with the gas storage tank 301, the gas outlet of the pulse valve 302 is communicated with the cold medium inlet of the heat exchanger 303 through the pipeline, the opening and closing of the pulse valve 302 and the opening of the pulse valve 302 are used for controlling the dust cleaning process according to the dust cleaning requirement of the to-be-cleaned pipeline 100, and the air pressure of the gas entering the to-be-cleaned pipeline 100 through the gas storage tank 301, the pulse valve 302, the heat exchanger 303 and the blowing pipe 304 can also be used for cleaning the to-be-cleaned pipeline 100 periodically or timely while the furnace body 200 is in normal operation, the manual dust cleaning is avoided, the timely discharge of the flue gas in the furnace body 200 is ensured, and the production efficiency and the dust cleaning efficiency in the furnace body are improved.

Here, it is specifically described that the number of the ash removing components corresponding to the number of the positions on the pipe to be ash removed 100, that is, the positions on the pipe to be ash removed, where the ash is easy to be deposited, are all provided with ash removing components 300, for example: the purpose of the bent part of the to-be-cleaned dust pipe is to ensure that dust on the to-be-cleaned dust pipe 100 is effectively cleaned through the dust cleaning component 300, so that the smoke in the reaction in the furnace body 200 is rapidly discharged in the reaction process, and the production efficiency of the furnace body 200 and the dust cleaning efficiency of the to-be-cleaned dust pipe 100 on the furnace body 200 are improved. Therefore, the number of ash removal components provided on the ash removal pipe 100 is not further limited herein.

The heat medium inlet of the heat exchanger 303 is connected to a hot gas source 401 through a first pipe 400, and the heat medium outlet of the heat exchanger 303 is used for discharging hot gas in the heat exchanger 303. Because the high-temperature flue gas circulates in the pipeline 100 to be cleaned, if the temperature of the gas entering the pipeline 100 to be cleaned from the blowing pipe 304 is lower, the gas entering the pipeline 100 to be cleaned and the high-temperature flue gas therein form a larger temperature difference, so that dust particles are mixed and adhered on the pipeline 100 to be cleaned, and the dust particles adhered on the pipeline 100 to be cleaned are more difficult to clean.

In the actual ash removal process of the pipeline ash removal device on the furnace body 200, firstly, hot gas in a hot gas source 401 is introduced into the heat exchanger 303 through a first pipeline 400 and a hot medium inlet on the heat exchanger 303, then the pulse valve 302 is opened, the gas in the gas storage tank 301 enters the heat exchanger 303 through a gas inlet on the pulse valve 302, a gas outlet on the pulse valve 302 and a cold medium inlet on the heat exchanger 303, the gas in the heat exchanger 303 exchanges heat with the hot gas in the heat exchanger, the heated temperature of the gas is increased, the gas after the temperature increase enters the blowing pipe 304 through a cold medium outlet on the heat exchanger 303, then enters the pipeline 100 to be cleaned through the blowing pipe 304, dust particles attached to the inner wall of the pipeline 100 to be cleaned are blown out of the pipeline 100 along with the flow of high-temperature flue gas in the pipeline 100 to be cleaned, the purpose of carrying out ash removal on the pipeline 100 is achieved, and the temperature of the hot gas after the heat exchange with the gas is reduced, and the hot gas is discharged out of the heat medium through the heat exchanger 303 on the heat exchanger.

Specifically, the high-pressure gas stored in the gas storage tank 301 is pure high-pressure gas, so as to avoid that impurities are contained in the high-pressure gas, so that the high-pressure gas enters the to-be-cleaned pipeline 100, and then the impurities mixed in the high-pressure gas are attached to the to-be-cleaned pipeline 100, the ash cleaning difficulty of the to-be-cleaned pipeline 100 is increased, the hot gas source 401 provides gas with higher temperature, the temperature of the gas in the hot gas source 401 is higher than that of the high-pressure gas in the gas storage tank 301, and thus the high-pressure gas in the heat exchanger 303 can be well subjected to heat exchange with the gas provided by the hot gas source 401, the high-pressure gas is quickly heated by utilizing the heat carried by the gas provided by the hot gas source 401, the temperature difference between the heated high-pressure gas and the high-temperature gas in the to-be-cleaned pipeline 100 is small, and the phenomenon that part of the gas in the high-temperature flue gas is condensed into water vapor and dust particles in the high-temperature flue gas are mixed and then adhered to the to-be-cleaned pipeline 100 is avoided as much as possible.

The furnace body 200 in the present application may be a fluidized bed furnace, a calcium carbide furnace, an ore-smelting furnace, or some equipment that is used in the operation process of a factory and is prone to generate smoke, but the present application is not limited thereto. Taking the fluidized bed furnace as an example, because a large amount of flue gas generated in the existing fluidized bed furnace is continuously discharged through a flue gas pipeline in the combustion process, and high-temperature flue gas in the flue gas pipeline (the flue gas pipeline in the process refers to a to-be-cleaned ash pipeline 100) does not pass through a dust removing device, the dust content in the flue gas is large, and meanwhile, water vapor is accompanied, so that dust and dust mixed with the water vapor are adhered to the inner wall of the flue gas pipeline and the bending part of the flue gas pipeline, the flue gas pipeline is further blocked, and the fluidized bed furnace is manually cleaned, so that a large amount of gas is leaked in the cleaning process, the normal production of the fluidized bed furnace is influenced, and serious potential safety hazards are caused. The pipeline ash removing device provided by the application controls the ash removing process through the opening and closing of the pulse valve 302 and the opening of the pulse valve 302, and the air pressure entering the pipeline 100 to be ash removed through the air storage tank 301, the pulse valve 302, the heat exchanger 303 and the injection pipe 304, and can regularly or timely wash the pipeline 100 to be ash removed through high-pressure air while the furnace body 200 is in normal operation, so that the aim of ash removing of the pipeline 100 to be ash removed is fulfilled, manual ash removal is avoided, timely discharge of smoke in the furnace body 200 is ensured, and the production efficiency and ash removing efficiency in the furnace body 200 are improved. In addition, the arrangement of the heat exchanger 303 reduces the ash removal difficulty of the pipeline 100 to be ash removed, and improves the ash removal efficiency.

In some embodiments, referring to fig. 2, the other end of the pipe 100 to be cleaned is connected with a settling chamber 101, the settling chamber 101 is connected with a dust remover 501 through a second pipe 500, a gas outlet of the dust remover 501 is connected with a flue gas purifying component 601 through a third pipe 600, a pipe body of the third pipe 600 is connected with a fourth pipe 602, and one end of the fourth pipe 602 far from the third pipe 600 is connected with a hot gas source 401. The settling chamber 101 firstly removes dust from high-temperature flue gas in the dust removing pipeline 100 in large particles, the dust remover 501 removes dust from the high-temperature flue gas after the dust removal in the settling chamber 101 in a secondary mode, the high-temperature flue gas after the secondary dust removal is introduced into the hot gas source 401 through the fourth pipeline 602 to serve as a heat medium on the heat exchanger 303, the high-temperature flue gas is introduced into the heat exchanger 303 from a heat medium inlet on the heat exchanger 303 through the first pipeline 400 to serve as a heat source in the heat exchanger 303 to heat high-pressure gas entering the heat exchanger 303 from a cold medium inlet of the heat exchanger 303, and therefore the high-temperature flue gas in the furnace body 200 is effectively utilized.

In some embodiments, referring to fig. 2, the heat medium outlet of the heat exchanger 303 of the present application communicates with the flue gas cleaning assembly 601 through a fifth conduit 700. Because part of the heat source of the heat exchanger 303 comes from the high-temperature flue gas in the furnace body 200, and the high-temperature flue gas may contain nitrogen oxides, sulfur oxides, and the like, the flue gas purifying assembly 601 purifies the hot gas discharged from the heat medium outlet of the heat exchanger 303, and then the flue gas treated by the flue gas purifying assembly 601 is discharged to the atmosphere, so that pollution of the hot gas to the atmosphere can be reduced, for example: haze, acid rain, etc. are caused.

In the above embodiment, the flue gas cleaning module 601 may be a desulfurizing tower, a denitrating tower, etc., and the flue gas cleaning module 301 may be set according to the substances contained in the high-temperature flue gas in the furnace, so the application is not limited thereto.

Optionally, one end of the fifth pipeline 700 near the flue gas purifying component 601 is provided with a circulating air pump, where the purpose of the circulating air pump is to pump the hot gas after heat exchange with the gas in the heat exchanger 303 from the heat medium outlet of the heat exchanger 303 into the flue gas purifying component 601, and purify the hot gas by the flue gas purifying component 601 and then discharge the hot gas, so as to reduce the harm of the discharged hot gas to the atmospheric environment, for example: haze, acid rain, etc. are caused.

In some embodiments, referring to fig. 2, a first gas flow regulator valve 402 is disposed on the first conduit 400; the first gas flow rate adjusting valve 402 is opened to convey the hot gas of the hot gas source 401 into the heat exchanger 303 from the heat medium inlet on the heat exchanger 303 through the first pipeline 400, the flow rate of the hot gas entering the heat exchanger 303 from the heat medium inlet on the heat exchanger 303 can be adjusted through the opening of the first gas flow rate adjusting valve 402, and the flow rate of the gas entering the heat exchanger 303 can be calculated through the first gas flow rate adjusting valve 402, so that the actual heat exchange condition of the high-pressure gas entering from the cold medium inlet on the heat exchanger 303 and the hot gas can be conveniently mastered.

A second gas flow regulating valve 6021 is provided in the fourth conduit 602. Wherein, open the flow control valve 6021 of second gas and carry the steam in the flue gas purification module 601 to the steam source 401 in through fourth pipeline 602, still accessible second gas flow control valve 6021's aperture is adjusted the flow size that enters into the steam source 401 in proper order from flue gas purification module 601 and fourth pipeline 602, and then can calculate the flow size of the heat medium in entering the steam source 401, is convenient for grasp the condition of the steam that provides through flue gas purification module 601 case steam source 401.

In some embodiments, referring to FIG. 3, a pressure alarm 3011 is provided on the air reservoir 301 of the present application; the pressure alarm 3011 detects the high-pressure gas in the gas storage tank 301 in real time, so as to ensure that the high-pressure gas in the gas storage tank 301 can meet the amount of the high-pressure gas required by cleaning dust on the pipeline 100 to be cleaned, therefore, the high-pressure gas in the gas storage tank 301 corresponds to a lowest pressure value, and when the pressure in the gas storage tank 301 detected by the pressure alarm 3011 is smaller than the lowest pressure value, the pressure alarm 3011 sends an alarm prompt, and at the moment, a worker can timely introduce the high-pressure gas into the gas storage tank 301.

The top of the air storage tank 301 is communicated with a pressure release pipeline 3012, and the pressure release pipeline 3012 is provided with a safety valve 900. In order to ensure that the pressure of the high-pressure gas stored in the gas storage tank 302 is always within a safe range, the purpose is to avoid the danger of explosion and the like of the gas storage tank 301 caused by overlarge pressure of the high-pressure gas in the gas storage tank 301, therefore, the high-pressure gas in the gas storage tank 301 corresponds to a maximum pressure value, and the safety valve 900 belongs to an automatic valve type, is a special valve in which an opening and closing member is in a normally closed state under the action of external force, and when the pressure of the medium in the equipment or the pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. Therefore, when the pressure of the high-pressure gas in the gas tank 301 is about to be greater than the maximum pressure value, the safety valve 900 opens, and the pressure of the high-pressure gas in the gas tank 301 is released to be less than the maximum pressure value corresponding to the gas tank 301.

In some embodiments, referring to fig. 1, 2 and 3, the pipe ash cleaning device in the present application further includes a control cabinet 201 disposed on an outer wall of the furnace body; specifically, a PLC controller is disposed in the control cabinet 201, a control button 2011 and a display panel 2012 are disposed on an outer wall of the control cabinet 201, and the control button 2011, the display panel 2012 and the pulse valve 302 are electrically connected to the PLC controller. Wherein, PLC controller can select according to actual need, and the application is not specifically limited here.

In the above embodiment, the parameters such as the running time and running interval of the pulse valve 302 are set by the control button 2011, the parameters (running time, running interval, etc.) of the pulse valve 302 set by the control button 2011 are displayed on the display panel 2012, and the PLC controller controls the running of the pulse valve 302 according to the set parameters (running time, running interval, etc.), so as to realize the automation of the ash cleaning process, avoid the manual operation of the pulse valve 302, and thereby improve the convenience of the pipe ash cleaning device for cleaning the ash to the pipe 100.

In some embodiments, referring to fig. 1, 2 and 3, a filter screen is disposed at an end of the blowing pipe 304 that communicates with a pipe to be cleaned, and a check valve 3041 is disposed on the blowing pipe 304. Wherein, the filter screen is high temperature resistant material, for example: the stainless steel filter screen is used for allowing heated high-pressure gas to pass through the filter screen and enter the pipeline 100 to be cleaned, but making the smoke particles in the high-temperature smoke in the pipeline 100 to be cleaned unable to pass through, avoiding the blocking of the smoke particles in the high-temperature smoke by the blowing pipe 304, and the number of meshes and the aperture of the filter screen can be set according to the flow rate of the high-temperature smoke in the pipeline 100 to be cleaned and the particle size of the smoke particles carried by the high-temperature smoke, so the application is not limited in detail.

In addition, the check valve 3041 is provided to enable the high-pressure gas in the blowing pipe 304 to enter the pipe 100 to be cleaned, and the high-temperature flue gas in the pipe 100 to be cleaned cannot enter the blowing pipe 304, so that the blowing pipe 304 is blocked.

Specifically, after the pulse valve 302 is opened, the high-pressure gas in the gas storage tank 301 enters the heat exchanger 303 through the pulse valve 302 and is heated by the heat exchanger 303, and then enters the pipeline 100 to be cleaned through the blowing pipe 304, and the heated flue gas can blow off dust particles attached to the filter screen, so that the heated high-pressure gas rapidly enters the pipeline 100 to be cleaned and sprays out the dust on the pipeline 100, and the dust cleaning efficiency of the pipeline cleaning device to be cleaned is ensured.

In some embodiments, the other end of the lance 304 of the present application communicates with the conduit 100 to be cleaned via a flange. The other end of the blowing pipe 304 is one end of the blowing pipe 304 communicated with the to-be-cleaned pipeline 100, a first flange is arranged at one end of the blowing pipe 304, a second flange matched with the first flange is arranged on the to-be-cleaned pipeline 100, the first flange and the second flange are tightly combined together through bolts, the blowing pipe 304 is connected with the to-be-cleaned pipeline 100 through a flange, the blowing pipe 304 is conveniently mounted on the to-be-cleaned pipeline 100 or detached from the to-be-cleaned pipeline 100, the strength of the flange connection is high, the sealing performance is good, the stability of connection between the blowing pipe 304 and the to-be-cleaned pipeline can be improved, the sealing performance of the connection part of the blowing pipe 304 and the to-be-cleaned pipeline 100 can be improved, and the overflow of smoke in the to-be-cleaned pipeline 100 is avoided.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present application, and not limiting thereof; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will appreciate that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (7)

1. The utility model provides a flue gas pipeline ash removal device which characterized in that includes:

The device comprises a to-be-cleaned dust pipe (100), wherein one end of the to-be-cleaned dust pipe (100) is used for being communicated with a smoke outlet of a furnace body (200);

The ash removal assembly (300), the ash removal assembly (300) comprises an air storage tank (301), a pulse valve (302), a heat exchanger (303) and a blowing pipe (304); the air inlet of the pulse valve (302) is communicated with the air storage tank (301), the air outlet of the pulse valve (302) is communicated with the cold medium inlet of the heat exchanger (303), the cold medium outlet of the heat exchanger (303) is communicated with one end of the blowing pipe (304), and the other end of the blowing pipe (304) is communicated with the to-be-cleaned dust pipe (100);

The heat medium inlet of the heat exchanger (303) is communicated with a hot gas source (401) through a first pipeline (400), and the heat medium outlet of the heat exchanger (303) is used for discharging hot gas in the heat exchanger (303).

2. The flue gas duct ash removal device according to claim 1, wherein,

The other end of treating deashing pipeline (100) communicates there is settling chamber (101), settling chamber (101) are through second pipeline (500) intercommunication there is dust remover (501), the gas outlet of dust remover (501) is through third pipeline (600) intercommunication there is flue gas purification subassembly (601), the intercommunication has fourth pipeline (602) on the pipe shaft of third pipeline (600), fourth pipeline (602) keep away from the one end of third pipeline (600) with hot gas source (401) intercommunication.

3. The flue gas duct ash removal device according to claim 2, characterized in that the heat medium outlet of the heat exchanger (303) communicates with the flue gas cleaning assembly (601) via a fifth duct (700).

4. The flue gas duct ash removal device according to claim 2, characterized in that a first gas flow regulating valve (402) is arranged on the first duct (400);

the fourth pipeline (602) is provided with a second gas flow regulating valve (6021).

5. The flue gas pipe ash removal device according to claim 1, characterized in that a pressure alarm (3011) is arranged on the gas storage tank (301);

The top of gas holder (301) is linked together and is had pressure release pipeline (3012), be provided with relief valve (900) on pressure release pipeline (3012).

6. The flue gas duct ash removal device according to any one of claims 1 to 5, wherein a filter screen is provided at an end of said blowing pipe (304) in communication with said flue gas duct to be ash removed, and a non-return valve (3041) is provided on said blowing pipe (304).

7. The flue gas duct ash removal device according to claim 6, characterized in that the other end of the injection pipe (304) communicates with the flue gas duct to be ash removed (100) via a flange.