CN217015960U - Exhaust-heat boiler that possesses dust removal function - Google Patents
Exhaust-heat boiler that possesses dust removal function Download PDFInfo
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- CN217015960U CN217015960U CN202220164650.XU CN202220164650U CN217015960U CN 217015960 U CN217015960 U CN 217015960U CN 202220164650 U CN202220164650 U CN 202220164650U CN 217015960 U CN217015960 U CN 217015960U
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- dust removal
- flue gas
- heat boiler
- waste heat
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Abstract
The utility model discloses a waste heat boiler with a dust removal function, which relates to the technical field of waste heat boilers and solves the problem of environmental pollution caused by large dust content in flue gas discharged by the conventional waste heat boiler, and comprises a waste heat boiler body, wherein the waste heat boiler body is provided with a high-temperature flue gas inlet and a tail gas outlet, the tail gas outlet is sequentially connected with a bag dust removal device and a spray tower, the bag dust removal device comprises an upper dust removal cavity and a lower ash bucket, a filter cylinder with an opening at the top is arranged in the dust removal cavity, a spray pipe is arranged above the filter cylinder and is communicated with a gas bag, the spray pipe is also connected with an air ionizer, the top outlet of the bag dust removal device is connected with the lower inlet of the spray tower through a flue gas conveying pipe II, and a multilayer spray assembly is arranged in the spray tower; the utility model can realize effective dust removal on flue gas, and has the advantages of high dust removal efficiency, good effect, long service life of the wading pen and small environmental pollution.
Description
Technical Field
The utility model relates to the technical field of flue gas utilization in sulfuric acid production, in particular to the technical field of waste heat boilers.
Background
Sulfuric acid is an important chemical raw material, sulfuric acid is mainly produced by taking pyrite as a main raw material in China, a large amount of high-temperature flue gas is generated in the roasting process of pyrite acid making, and if the energy is not reasonably utilized, a large amount of energy waste is caused, so that the reasonable utilization of the waste heat in the acid making process is beneficial to environmental protection and reduction of greenhouse effect, and better economic and social benefits are achieved.
The waste heat boiler is a boiler which heats water to a certain temperature by utilizing heat generated after waste heat and combustible substances in waste gas, waste materials or waste liquid in various industrial processes are combusted, fuel oil, fuel gas and fuel coal are combusted to generate high-temperature flue gas to release heat, the high-temperature flue gas firstly enters a hearth, then enters a waste heat recovery device of a front smoke box, then enters a smoke and fire tube, and finally enters a waste heat recovery device in a flue of a rear smoke box, so that the high-temperature flue gas is changed into low-temperature flue gas which is discharged into the atmosphere through a chimney.
Although the waste heat boiler recovers the heat of high-temperature flue gas into low-temperature flue gas, the emission of the flue gas still needs to be processed, the flue gas is a mixture of gas-phase substances and solid-phase substances, and because of the existence of smoke dust, the discharged flue gas of the boiler is gray or even black, if the discharged flue gas is not processed, the environment is greatly polluted, and the waste heat boiler is contrary to the currently advocated energy saving and emission reduction concept.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: in order to solve the technical problem, the utility model provides a waste heat boiler with a dust removal function.
The utility model specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a waste heat boiler who possesses dust removal function, includes the waste heat boiler body has high temperature flue gas entry and tail gas export, the tail gas export has connected gradually sack dust collector and spray column, sack dust collector includes the dust removal chamber on upper portion and the ash bucket of lower part, it strains a section of thick bamboo to be provided with open-top in the dust removal chamber, it is provided with the jetting pipe to strain a section of thick bamboo top, jetting pipe and gas bag intercommunication, the jetting pipe still is connected with the air ionizer, sack dust collector top export is through flue gas conveyer pipe two and spray column lower part entry linkage, be provided with the multilayer spray assembly in the spray column.
Preferably, the tail gas outlet is further connected with an air heat exchanger, a hot air outlet of the air heat exchanger is connected with a high-temperature flue gas inlet of the waste heat boiler body through a heat recovery pipe, and a flue gas outlet of the air heat exchanger is connected with a flue gas inlet of the cloth bag dust removal device through a flue gas conveying pipe I.
Preferably, a buffer device is arranged at a flue gas inlet of the cloth bag dust removal device, the buffer device comprises a buffer cavity, a filter screen and a cleaning opening, the filter screen is arranged in the buffer cavity, and the buffer cavity is provided with the cleaning opening capable of being opened.
Preferably, the bottom surface of the ash bucket is provided with a jolt beater.
Preferably, an induced draft fan is further arranged on the second flue gas conveying pipe.
Preferably, the spraying assembly comprises a spraying pipe and a spraying head, and the spraying head is uniformly connected to the bottom of the spraying pipe.
Preferably, the bottom of the spraying tower is provided with a settling basin and a purified water tank, the bottom of the spraying tower is communicated with the settling basin, and the settling basin is communicated with the purified water tank through an overflow port.
Preferably, the clean water reservoir is communicated with a spray water delivery pipe through a circulating pump, the spray water delivery pipe is connected with a plurality of spray water distribution pipes, and each spray water distribution pipe is correspondingly connected with one spray assembly.
The utility model has the following beneficial effects:
1. according to the utility model, high-temperature flue gas generated in sulfuric acid production is introduced into the waste heat boiler body for heating to generate steam, low-temperature flue gas flows out from the tail gas outlet, the low-temperature flue gas enters the cloth bag dust removal device, after being filtered by the filter cartridge in the dust removal cavity, dust contained in the flue gas is blocked at the outer side of the filter cartridge, the filtered flue gas passes through the filter cartridge and enters the spray tower for spray dust removal, and finally clean air is discharged from the top of the spray tower, so that the dust removal of the flue gas is realized, and the pollution to the environment is reduced.
2. According to the utility model, the air ionizer is connected to the injection tube, the high-pressure airflow sprayed by the injection tube passes through the air ionizer to ionize air rapidly, and periodic back blowing is performed on the interior of the filter cartridge, so that dust adhered to the exterior of the filter cartridge is removed.
3. The smoke tail gas enters the air heat exchanger after being discharged, the smoke tail gas and the cold air are subjected to heat exchange in the air heat exchanger, the cold air is heated, the temperature of the smoke tail gas is reduced, the heated hot air flows back to enter the waste heat boiler body for recovering heat, the energy consumption can be further reduced, meanwhile, the temperature of the smoke tail gas is reduced, the subsequent cloth bag dust removal device is protected, and the service life of the cloth bag dust removal device is prolonged.
4. The buffer cavity is arranged at the inlet of the cloth bag dust removing device, so that the flow velocity of smoke dust airflow is reduced, the impact on a filter cylinder in the cloth bag dust removing device is reduced, the service life of the cloth bag dust removing device is prolonged, meanwhile, the filter screen can carry out primary filtration on impurities contained in smoke dust, the operating pressure of the cloth bag dust removing device is reduced, the cleaning opening can be opened periodically to carry out cleaning and inspection on the filter screen, and the filtering efficiency of the filter screen is maintained.
5. According to the utility model, the vibrating beater is arranged on the bottom surface of the ash bucket, the ash discharge port is opened when ash needs to be discharged, and the vibrating beater is matched to accelerate the discharge of dust particles and reduce residues.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the cushioning device;
fig. 3 is a schematic structural view of the spray device.
Reference numerals are as follows: 1-a waste heat boiler body, 2-a high-temperature flue gas inlet, 3-a tail gas outlet, 4-an air heat exchanger, 5-a heat recovery pipe, 6-a flue gas conveying pipe I, 7-a buffer device, 701-a buffer cavity, 702-a filter screen, 703-a cleaning and drawing port, 8-a cloth bag dust removal device, 801-a dust removal cavity, 802-an ash bucket, 9-an ash discharge port, 10-a vibration beater, 11-a filter cylinder, 12-an air bag, 13-an air ionizer, 14-a spraying pipe, 15-a flue gas conveying pipe II, 16-an induced draft fan, 17-a spray tower, 18-a settling tank, 19-a water purification tank, 20-an overflow port, 21-a circulating pump, 22-a spraying water pipe, 23-a spraying water distribution pipe, 24-a spraying component and 241-a spraying pipe, 242-shower head.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
As shown in fig. 1 to 3, the embodiment provides a waste heat boiler with a dust removal function, which includes a waste heat boiler body 1, where the waste heat boiler body 1 has a high-temperature flue gas inlet 2 and a tail gas outlet 3, the high-temperature flue gas inlet 2 is used for introducing high-temperature flue gas generated in sulfuric acid production, and the tail gas outlet 3 is used for discharging low-temperature flue gas after recovery of boiler waste heat;
the tail gas outlet 3 is sequentially connected with a cloth bag dust removal device 8 and a spray tower 17, the cloth bag dust removal device 8 is used for filtering dust particles in the smoke dust, and the spray tower 17 further washes the smoke dust for heat exchange to remove fine dust in the smoke dust;
the bag-type dust collector 8 comprises an upper dust collection cavity 801 and a lower dust hopper 802, a filter cylinder 11 with an open top is arranged in the dust collection cavity 801, a blowing pipe 14 is arranged above the filter cylinder 11, the blowing pipe 14 is communicated with an air bag 12, the blowing pipe 14 is further connected with an air ionizer 13, an outlet in the top of the bag-type dust collector 8 is connected with an inlet in the lower portion of a spray tower 17 through a second flue gas conveying pipe 15, and a plurality of layers of spray assemblies 24 are arranged in the spray tower 17.
When the waste heat boiler is used, high-temperature flue gas is introduced into the waste heat boiler body 1 and used for heating to generate steam, low-temperature flue gas flows out from the tail gas outlet 3, the low-temperature flue gas enters the cloth bag dust removal device 8, dust contained in the flue gas is blocked at the outer side of the filter drum 11 after being filtered by the filter holes in the filter drum 11 in the dust removal cavity 801, and the filtered flue gas passes through the filter drum 11 and enters the spray tower 17 for spray dust removal, and is finally emptied from the top of the spray tower 17;
in the dust removing cavity 801, larger dust particles directly fall into the dust hopper 802 due to the effects of inertia collision, natural sedimentation and the like, the dust discharging port 9 at the bottom of the dust hopper 802 is opened after a period of time to discharge the collected dust particles, the dust accumulated on the outer wall of the filter cylinder 11 is gradually increased along with the extension of the filtering time, the system resistance is continuously increased, the work load of related equipment is increased, the work temperature is quickly increased, if the filter cylinder runs for a long time under the working condition, the service life of the equipment is easily reduced, and the equipment can be burnt under serious conditions, the conventional dust removing method is to use pulse blowing compressed air to blow and clean the filter cylinder 11, but under certain conditions, the effect is general, in order to solve the problem, the air ionizer 13 is connected to the blowing pipe 14, the high-pressure air flow sprayed by the blowing pipe 14 passes through the air ionizer 13 to quickly ionize the air, and then periodic back blowing is performed on the inside of the filter cylinder 11, therefore, dust adhered to the outside of the filter cylinder 11 is removed, the powder adhered to the surface of the filter element can be neutralized by static electricity due to the generation of the ion gas after the air is ionized, the powder after the static electricity neutralization no longer has static agglomeration and adhesion, and can be more easily and quickly peeled from the surface of the filter cylinder 11 in the ash removal process, so that the effect of quickly and efficiently removing the ash is achieved.
Example 2
Based on embodiment 1, the tail gas outlet 3 is further connected with an air heat exchanger 4, a hot air outlet of the air heat exchanger 4 is connected with a high-temperature flue gas inlet 2 of the waste heat boiler body 1 through a heat recovery pipe 5, and a flue gas outlet of the air heat exchanger 4 is connected with a flue gas inlet of a cloth bag dust removal device 8 through a flue gas conveying pipe 6.
Get into air heat exchanger 4 after the smoke and dust tail gas discharges, in air heat exchanger 4, smoke and dust tail gas takes place heat exchange with the cold air, and the cold air is heated, and smoke and dust tail gas temperature reduces, and the hot-air backward flow after the heating gets into in the exhaust-heat boiler body 1 and is used for retrieving the heat, can further reduce energy resource consumption, and smoke and dust tail gas temperature obtains reducing simultaneously, is favorable to protecting follow-up sack dust collector 8, prolongs sack dust collector 8's life.
Example 3
Based on embodiment 1, with particular reference to fig. 1 and 2, the flue gas inlet of the cloth bag dust removal device 8 is provided with the buffer device 7, the buffer device 7 includes a buffer cavity 701, a filter screen 702 and a clearing opening 703, the filter screen 702 is arranged in the buffer cavity 701, the buffer cavity 701 is provided with the clearing opening 703 that can be opened, and the width of the buffer cavity 701 is greater than the pipe diameter width of the flue gas conveying pipe one 6, so as to buffer the flue gas.
Because the buffer cavity 701 is arranged at the inlet of the cloth bag dust removing device 8, the flow rate of smoke dust airflow is reduced, the impact on the filter cartridge 11 inside the cloth bag dust removing device 8 is reduced, the service life of the cloth bag dust removing device 8 is prolonged, meanwhile, the filter screen 702 can perform primary filtration on impurities contained in smoke dust, the operating pressure of the cloth bag dust removing device 8 is reduced, the cleaning port 703 can be opened periodically to clean and check the filter screen 702, and the filtering efficiency of the filter screen 702 is maintained.
Example 4
Based on embodiment 1, the bottom surface of the ash bucket 802 is provided with a jolting device 10.
This embodiment further sets up in the bottom surface of ash bucket 802 and shakes beating ware 10, opens row ash mouth 9 when needs arrange the ash, and the cooperation shakes beating ware 10 can accelerate dust particle and discharge, reduces simultaneously and remains.
Example 5
Based on embodiment 1, a draught fan 16 is further arranged on the second flue gas conveying pipe 15.
This embodiment further sets up draught fan 16 on flue gas conveyer pipe two 15, plays the effect of drainage to the smoke and dust gas for the flow of smoke and dust air current, thereby improve dust collection efficiency.
Example 6
Based on embodiment 1, the spray assembly 24 comprises a spray pipe 241 and a spray head 242, and the spray head 242 is uniformly connected to the bottom of the spray pipe 241.
Spraying liquid is introduced into the spraying pipes 241 and is sprayed out downwards from the spraying heads 242, as shown in fig. 1, three groups of spraying assemblies 24 are arranged, and the mass transfer efficiency of the gas and the liquid in the spraying tower 17 can be improved by the multiple groups of spraying assemblies 24, so that the flue gas dust removal effect is improved.
Example 7
Based on the embodiment 1, the bottom of the spray tower 17 is provided with a sedimentation tank 18 and a clean water tank 19, the bottom of the spray tower 17 is communicated with the sedimentation tank 18, and the sedimentation tank 18 is communicated with the clean water tank 19 through an overflow port 20.
The clean water reservoir 19 is communicated with a spray water delivery pipe 22 through a circulating pump 21, the spray water delivery pipe 22 is connected with a plurality of spray water distribution pipes 23, and each spray water distribution pipe 23 is correspondingly connected with a spray assembly 24.
In this embodiment, the setting of sedimentation tank 18 can subside the dusty liquid after spraying, and the setting of overflow mouth 20 can make the supernatant fluid of sedimentation tank 18 flow into in clean water reservoir 19 to keep the water source cleanliness in the clean water reservoir 19, in pump 21 pump income spraying raceway 22 through circulating pump, spray in the diversion pipe 23 input spraying assembly 24 sprays.
Claims (8)
1. A waste heat boiler with a dust removal function comprises a waste heat boiler body (1), wherein the waste heat boiler body (1) is provided with a high-temperature flue gas inlet (2) and a tail gas outlet (3), it is characterized in that the tail gas outlet (3) is sequentially connected with a cloth bag dust removal device (8) and a spray tower (17), the cloth bag dust removal device (8) comprises a dust removal cavity (801) at the upper part and a dust hopper (802) at the lower part, a filter cylinder (11) with an opening at the top is arranged in the dust removing cavity (801), a blowing pipe (14) is arranged above the filter cylinder (11), the blowing pipe (14) is communicated with the air bag (12), the blowing pipe (14) is also connected with an air ionizer (13), the top outlet of the cloth bag dust removal device (8) is connected with the lower inlet of the spray tower (17) through a second flue gas conveying pipe (15), and a plurality of layers of spray assemblies (24) are arranged in the spray tower (17).
2. The exhaust-heat boiler with the dust removal function according to claim 1, wherein the tail gas outlet (3) is further connected with an air heat exchanger (4), a hot air outlet of the air heat exchanger (4) is connected with the high-temperature flue gas inlet (2) of the exhaust-heat boiler body (1) through a heat recovery pipe (5), and a flue gas outlet of the air heat exchanger (4) is connected with a flue gas inlet of a cloth bag dust removal device (8) through a flue gas conveying pipe I (6).
3. The exhaust-heat boiler with dust removal function of claim 1, characterized in that a buffer device (7) is arranged at the flue gas inlet of the cloth bag dust removal device (8), the buffer device (7) comprises a buffer cavity (701), a filter screen (702) and a cleaning opening (703), the filter screen (702) is arranged in the buffer cavity (701), and the buffer cavity (701) is provided with the cleaning opening (703) which can be opened.
4. The exhaust-heat boiler with dust removing function according to claim 1, characterized in that the bottom surface of the ash bucket (802) is provided with a beater (10).
5. The waste heat boiler with the dust removal function according to claim 1, wherein an induced draft fan (16) is further arranged on the second flue gas conveying pipe (15).
6. A waste heat boiler with dust removing function as claimed in claim 1, characterized in that the spraying assembly (24) comprises a spraying pipe (241) and a spraying head (242), and the spraying head (242) is uniformly connected to the bottom of the spraying pipe (241).
7. The waste heat boiler with the dust removal function of claim 1, wherein a sedimentation basin (18) and a clean water basin (19) are arranged at the bottom of the spray tower (17), the bottom of the spray tower (17) is communicated with the sedimentation basin (18), and the sedimentation basin (18) is communicated with the clean water basin (19) through an overflow port (20).
8. The waste heat boiler with the dust removal function according to claim 7, wherein the clean water reservoir (19) is communicated with a spray water pipe (22) through a circulating pump (21), the spray water pipe (22) is connected with a plurality of spray water distribution pipes (23), and each spray water distribution pipe (23) is correspondingly connected with one spray assembly (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220164650.XU CN217015960U (en) | 2022-01-20 | 2022-01-20 | Exhaust-heat boiler that possesses dust removal function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220164650.XU CN217015960U (en) | 2022-01-20 | 2022-01-20 | Exhaust-heat boiler that possesses dust removal function |
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| Publication Number | Publication Date |
|---|---|
| CN217015960U true CN217015960U (en) | 2022-07-22 |
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| CN202220164650.XU Active CN217015960U (en) | 2022-01-20 | 2022-01-20 | Exhaust-heat boiler that possesses dust removal function |
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| CN (1) | CN217015960U (en) |
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- 2022-01-20 CN CN202220164650.XU patent/CN217015960U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230815 Address after: 5-1, Vision Technology Plaza, 555 Wuxing Fifth Road, Wuhou District, Chengdu, 610000, Sichuan Patentee after: Sichuan Huashang Energy Technology Co.,Ltd. Address before: 622656 group 1, Donglin village, JuShui Town, Anzhou District, Mianyang City, Sichuan Province Patentee before: Mianyang xiangtaiyang Chemical Co.,Ltd. |
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| TR01 | Transfer of patent right |