CN109668135B - Water coal slurry combustion steam boiler - Google Patents
Water coal slurry combustion steam boiler Download PDFInfo
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- CN109668135B CN109668135B CN201811365994.1A CN201811365994A CN109668135B CN 109668135 B CN109668135 B CN 109668135B CN 201811365994 A CN201811365994 A CN 201811365994A CN 109668135 B CN109668135 B CN 109668135B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a coal water slurry combustion steam boiler, which comprises a boiler body, wherein a combustion hearth is arranged in the boiler body; a separation wall for separating the combustion chamber into a combustion cavity and a water tank cavity is arranged in the combustion chamber, a circulation tank is arranged at the upper end of the water tank cavity, a water storage tank is arranged at the lower end of the water tank cavity, a plurality of sewer pipes are arranged between the upper end of the water storage tank and the bottom end of the circulation tank, and the sewer pipes are communicated with the water storage tank and the circulation tank; a plurality of circulating water pipes are arranged between the bottom end of the water storage tank and the upper end of the circulating water tank, and the circulating water pipes penetrate through the partition wall and extend into the combustion cavity; a plurality of flow distribution plates arranged in parallel are also arranged in the combustion cavity, and flow distribution channels are formed by adjacent flow distribution plates; one end of the U-shaped exhaust pipe is opposite to the air inlet, the other end of the U-shaped exhaust pipe is located at one end of the flow dividing channel, a tail gas discharge port is formed in the end of the combustion cavity, and the tail gas discharge port is communicated with the tailing collecting device through a pipeline.
Description
Technical Field
The invention relates to the field of combustion boilers, in particular to a coal water slurry combustion steam boiler.
Background
Steam is widely applied to industrial production at present, and the current steam boilers are mainly divided into biomass fuel boilers, water-coal-slurry boilers and natural gas boilers. Present water coal slurry boiler, the water tank of adding water and water storage sets up the upper end at the boiler, consequently, when water is added the storage water tank in, can give the steam cooling of formation and liquefy, can directly influence the steam volume, and current boiler is in the direct discharge treatment of coal slurry waste residue and waste gas after direct will burning, however, still in order to have the phenomenon of not fully burning in the waste coal sediment, simultaneously exhaust waste gas also can have a large amount of heats, consequently equal to directly with heat discharge, increase the energy consumption. In view of the above drawbacks, it is necessary to design a coal water slurry combustion steam boiler.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a water-coal-slurry combustion steam boiler, which solves the problems that a water tank in the water-coal-slurry boiler is arranged at the upper end of the boiler, the amount of generated steam is reduced, and the energy consumption is increased.
In order to solve the technical problems, the technical scheme of the invention is as follows: the coal water slurry combustion steam boiler comprises a boiler body, wherein a combustion hearth is arranged in the boiler body; a separation wall for separating the combustion chamber into a combustion chamber and a water tank chamber is arranged in the combustion furnace chamber, and the combustion chamber is communicated with the upper end of the water tank chamber; one end of the combustion cavity is provided with a water coal gun insertion opening and an air inlet, the air inlet is communicated with an air supply device pipeline, a water coal gun is inserted into the water coal gun insertion opening, and the water coal gun is communicated with a coal supply device pipeline; a circulating tank is arranged at the upper end of the water tank cavity, a water storage tank is arranged at the lower end of the water tank cavity, a plurality of sewer pipes are arranged between the upper end of the water storage tank and the bottom end of the circulating water tank, and the sewer pipes are communicated with the water storage tank and the circulating water tank; a plurality of circulating water pipes are arranged between the bottom end of the water storage tank and the upper end of the circulating water tank, and the circulating water pipes penetrate through the partition wall and extend into the combustion cavity; the upper end of the circulating water tank is provided with an air outlet communicated with the air storage tank, and the water storage tank is provided with a water inlet communicated with the water supply device; the bottom of the combustion cavity is provided with a plurality of ash falling holes, and the bottom of the furnace body is provided with a furnace ash collecting device; one end of the combustion cavity is provided with a U-shaped exhaust pipe, a plurality of flow distribution plates which are arranged in parallel are further arranged in the combustion cavity, and flow distribution channels are formed by the adjacent flow distribution plates; the flow distribution plate is arranged on one side of the insertion opening of the water coal gun, one end of the U-shaped exhaust pipe is arranged opposite to the air inlet, the other end of the U-shaped exhaust pipe is positioned at one end of the flow distribution channel, a tail gas discharge port is arranged at the end part of the combustion cavity, and the tail gas discharge port is close to the other end of the flow distribution channel; the tail gas discharge port is communicated with the tail material collecting device through a pipeline; the tail gas collecting device comprises a filter, a dust collecting device, a powder pump, a tail gas recycling pipe and a tail gas discharging pipe; the air inlet end of the filter is communicated with the tail gas discharge port pipeline, the exhaust end of the filter is communicated with the tail gas recovery pipe and the tail gas discharge pipe, the tail gas recovery pipe is communicated with the air inlet pipeline, and the tail gas discharge pipe is communicated with the air inlet end pipeline of the desulfurization equipment; the dust collection device with the dust discharge port pipeline intercommunication of filter, the feed end of powder pump with the dust collection device pipeline intercommunication, the discharge end with combustion chamber body pipeline intercommunication, intercommunication the discharge end with the oral area of the pipeline of combustion chamber body extends to the end of giving vent to anger of air intake.
Furthermore, a plurality of circulating water pipes are arranged in parallel in a plurality of rows; a row of circulating water pipes are respectively distributed in the diversion channel; the inner side wall of the combustion cavity, which is far away from the air inlet, is provided with a water tank, one end of the water tank is communicated with the circulating water tank, and the other end of the water tank is communicated with the water storage tank.
Furthermore, a pipeline for communicating the air inlet with the air supply device is a spiral pipe.
Further, the furnace dust collecting device comprises a furnace dust box body arranged at the bottom of the furnace body and a cooling water tank positioned at the bottom end of the furnace dust box body.
Furthermore, a wind direction guider is further arranged at the position, close to the air inlet, of the bottom of the combustion cavity, and the wind direction guider converts part of air blown into the combustion cavity from the air inlet into upward airflow; the wind direction guider is provided with a flow guide opening facing the air inlet and a spiral cavity with an upward opening, and the flow guide opening is communicated with the spiral cavity.
Further, the filter comprises a sealed shell, a fixed plate arranged in the sealed shell and a plurality of high-temperature-resistant filter pipes arranged on the fixed plate; the fixed plate separates the sealed shell into an upper cavity and a lower cavity; the open end of the high-temperature-resistant filter pipe is positioned in the upper cavity; the air inlet of the filter is communicated with the lower cavity, the air outlet of the filter is communicated with the upper cavity, and the ash discharge port of the filter is positioned at the bottom of the sealed shell.
Furthermore, the high-temperature-resistant filter pipe is an alumina fiber high-temperature filter pipe.
Further, the high-temperature resistant filter pipe is adsorbed with a catalyst for converting tail gas.
Further, the catalyst comprises vanadium pentoxide, titanium dioxide, thiourea, a dispersing agent and a pore filling agent.
Further, the disperser is tween 60; the pore filler is dodecyl trimethyl ammonium chloride or dodecyl trimethyl ammonium bromide.
Compared with the prior art, the coal water slurry combustion steam boiler has the following beneficial effects:
1. the water storage tank is arranged at the bottom of the water tank cavity, the water supply device is communicated with the water storage tank, heated hot water and water vapor enter the circulating water tank through the circulating water pipe, the water vapor is discharged from the air outlet, and the hot water enters the water storage tank through the sewer pipe for circulating and heating, so that the steam is prevented from being liquefied when meeting cold, and the steam quantity is ensured;
2. a plurality of shunting channels are arranged in the combustion cavity, one end of each shunting channel is communicated with the U-shaped exhaust pipe, and the other end of each shunting channel is communicated with the exhaust pipe; the residue of the coal water slurry combustion entering the combustion cavity enters the branch flow through the U-shaped exhaust pipe, so that the combustion time is prolonged, the coal water slurry is further combusted, resources are fully utilized, and the purpose of saving resources is achieved;
3. the tail gas recovery pipe is communicated with the air inlet pipeline, so that the filtered tail gas is input into the combustion cavity again, heat in partial tail gas is recycled, and resources are further saved.
Drawings
FIG. 1 is a schematic view of a coal-water slurry fired steam boiler of the present invention;
FIG. 2 is a schematic view of the furnace body of the coal-water slurry combustion steam boiler of the present invention;
FIG. 3 is a schematic view of the internal structure of the furnace body of the coal-water slurry combustion steam boiler of the present invention;
FIG. 4 is a schematic cross-sectional view of the bottom end inside the furnace body of the coal-water slurry combustion steam boiler according to the present invention;
FIG. 5 is a schematic view of the exhaust gas collecting apparatus of the water-coal-slurry combustion steam boiler of the present invention;
FIG. 6 is a schematic view showing the internal structure of the filter of the water-coal-slurry combustion steam boiler according to the present invention;
FIG. 7 is a sectional view of the circulation tank of the water-coal-slurry combustion steam boiler according to the present invention;
FIG. 8 is a sectional view of the water storage tank of the water-coal-slurry combustion steam boiler of the present invention.
Detailed Description
The following detailed description will be further described in conjunction with the above-identified drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the concepts underlying the described embodiments. It will be apparent, however, to one skilled in the art, that the described embodiments may be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail.
As shown in fig. 1-8, the coal water slurry combustion steam boiler comprises a boiler body 1, wherein a combustion hearth 2 is arranged in the boiler body 1; and a partition wall 3 for partitioning the combustion hearth 2 into a combustion cavity 20 and a water tank cavity 21 is arranged in the combustion hearth 2, and the upper ends of the combustion cavity 20 and the water tank cavity 21 are communicated.
One end of the combustion chamber 20 is provided with a water coal gun insertion opening 200 and an air inlet 201, the air inlet 201 is communicated with a pipeline of an air supply device (not labeled in the attached drawings), and specifically, the air supply device is an air blower. The water coal gun 4 is inserted into the water coal gun insertion opening 200, the water coal gun 4 is communicated with a coal supply device (not marked in the attached drawing) through a pipeline, specifically, the coal supply device comprises a high-pressure pump and a water coal slurry container, the water coal slurry in the water coal slurry container is pumped into the water coal gun 4 by the high-pressure pump, and the water coal gun 4 is used for supplying the water coal; a circulation tank 5 is arranged at the upper end of the water tank cavity 21, a water storage tank 6 is arranged at the lower end of the water tank cavity, a plurality of sewer pipes 7 are arranged between the upper end of the water storage tank 6 and the bottom end of the circulation tank 5, and the sewer pipes 7 are communicated with the water storage tank 6 and the circulation tank 5; a plurality of circulating water pipes 8 are arranged between the bottom end of the water storage tank 6 and the upper end of the circulating water tank 5, and the circulating water pipes 8 penetrate through the partition wall 3 and extend into the combustion cavity 20. The upper end of the circulating water tank 5 is provided with an air outlet 50 communicated with an air storage tank (the figure is marked), and the water storage tank 6 is provided with a water inlet 60 communicated with a water supply device (the figure is not marked); in this example, the water supply device is a water pump. The bottom of the combustion cavity 20 is provided with a plurality of ash falling holes 202, and the bottom of the furnace body 1 is provided with a furnace ash collecting device 9; one end of the combustion cavity 20 is provided with a U-shaped exhaust pipe 10, a plurality of parallel flow distribution plates 11 are further arranged in the combustion cavity 20, and flow distribution channels are formed by the adjacent flow distribution plates 11; the flow distribution plate 11 is one side of the insertion opening of the water coal gun 4, one end of the U-shaped exhaust pipe 10 is arranged opposite to the air inlet 201, the other end of the U-shaped exhaust pipe is located at one end of the flow distribution channel, a tail gas discharge port 203 is arranged at the end of the combustion cavity 20, and the tail gas discharge port 203 is close to the other end of the flow distribution channel; the tail gas discharge port 203 is in pipeline communication with the tail material collecting device 12. The water supply device continuously inputs soft water into the water storage tank 6, and under the pressure of the water supply device, the water in the water storage tank 6 forms circulation through a circulating water pipe 8 and a sewer pipe 7; the coal supply device sprays coal water slurry into the combustion cavity 20 through the coal water gun 4, and the coal water slurry can be combusted in the combustion cavity 20 to realize the rapid heating of water in the circulating water pipe 8 so as to vaporize the water into steam; and the heated water is transported into the circulation tank 5 and the steam is discharged through the air outlet 50. The water storage tank 6 is arranged at the bottom of the water tank cavity 21, the water supply device is communicated with the water storage tank 6, heated hot water and water vapor enter the circulating water tank 5 through the circulating water pipe 8, the water vapor is discharged from the gas outlet 50, and the hot water enters the water storage tank 6 through the sewer pipe 7 for circulating heating, so that the steam is prevented from being liquefied when meeting cold, and the steam quantity is ensured; a plurality of flow dividing channels are arranged in the combustion cavity 20, one end of each flow dividing channel is communicated with the U-shaped exhaust pipe 10, and the other end of each flow dividing channel is communicated with the tail gas discharge port 203; the residue of the coal water slurry combustion entering the combustion chamber 20 enters the branch flow through the U-shaped exhaust pipe 10, so that the combustion time is increased, the coal water slurry is further combusted, resources are fully utilized, and the purpose of saving resources is achieved.
The exhaust gas collecting device 12 includes a filter 120, a dust collecting device 121, a dust pump 122, an exhaust gas recovery pipe 123, and an exhaust gas discharge pipe 124. The inlet end of the filter 120 is in pipeline communication with the exhaust gas discharge port 203, the exhaust end of the filter 120 is in pipeline communication with the exhaust gas recovery pipe 123 and the exhaust gas discharge pipe 124, the exhaust gas recovery pipe 123 is in pipeline communication with the air inlet 201, and the exhaust gas discharge pipe 124 is in pipeline communication with the inlet end of a desulfurization device (attached figures are labeled). Therefore, the tail gas recycling pipe 123 is in pipeline communication with the air inlet 201, so that the filtered tail gas is input into the combustion cavity 20 again, thereby recycling heat in part of the tail gas and further saving resources. The dust collecting device 121 is communicated with a dust discharge port of the filter 120 through a pipeline, the feeding end of the powder pump 122 is communicated with the dust collecting device 121 through a pipeline, the discharging end of the powder pump is communicated with the combustion cavity 20 through a pipeline, and the discharging end of the powder pump is communicated with a mouth of the combustion cavity 20 through a pipeline and extends to an air outlet end of the air inlet 201. Therefore, the burned dust can be input into the combustion cavity 20 again through the powder pump 122, and the powder is blown by the blower to diffuse in the combustion cavity 20 for further combustion, so that the coal cinder which is not fully combusted in the dust is completely combusted, and the energy is fully utilized. And the dust input into the combustion cavity 20 again can absorb the moisture in the coal water slurry, and can accelerate the moisture conversion in the coal water slurry, so that the coal in the coal water slurry can quickly reach the ignition point, thereby accelerating the combustion speed and enabling the combustion to be more thorough.
Specifically, the furnace body 1 is disposed on a concrete frame 100, and the ash collecting device 9 is disposed at the bottom of the frame 100.
Further, in order to make the coal particles and the slag particles fully diffuse in the combustion chamber 20, a wind direction guider 205 is further disposed at the bottom of the combustion chamber 20 near the air inlet 201, and the wind direction guider converts part of the air blown into the combustion chamber 20 from the air inlet 201 into an upward airflow. Specifically, the wind direction guider 205 has a flow guiding opening facing the air inlet 201 and a spiral cavity with an upward opening, the flow guiding opening is communicated with the spiral cavity, and a part of air in the air inlet 201 enters the spiral cavity through the flow guiding opening, and the spiral cavity converts the air flow into an upward spiral air flow, so that fuel particles are diffused in the whole combustion cavity 20, the fuel can fully contact with the air, and the combustion is more sufficient.
Further, the dust collecting device 121 includes a dust container and a powder pump body communicating the dust discharge port of the filter 120 and the dust container.
Further, a plurality of the circulating water pipes 8 are arranged in parallel in a plurality of rows; a row of circulating water pipes 8 are respectively distributed in the diversion channel; the inner side wall of the combustion cavity, which is far away from the air inlet 201, is provided with a water tank 22, one end of the water tank 22 is communicated with the circulating water tank 6, and the other end of the water tank 22 is communicated with the water storage tank 6. The heat of combustion is absorbed sufficiently by the water in the water tank 22 to avoid heat dissipation into the air.
Further, the pipeline communicating the air inlet 201 and the air supply device is a spiral pipe, so that the air flow blown by the air supply device is spiral, the fuel is distributed in the combustion chamber 20 as much as possible, and the full combustion is realized.
Further, the furnace dust collecting device 9 comprises a furnace dust box 90 arranged at the bottom of the furnace body 1 and a cooling water tank 91 positioned at the bottom end of the furnace dust box 90.
Further, the filter 120 includes a sealed housing 1200, a fixing plate 1201 disposed inside the sealed housing 1200, and a plurality of high temperature resistant filter pipes 1202 disposed on the fixing plate 1201; the fixing plate 1201 separates the hermetic container 1200 into an upper cavity and a lower cavity; the open end of the high temperature resistant filter tube 1202 is positioned in the upper cavity; the air inlet of the filter 120 is communicated with the lower cavity, the air outlet is communicated with the upper cavity, and the ash discharge port of the filter 120 is located at the bottom of the sealed shell 1200. The tail gas discharged into the sealed housing 1200 is filtered by the high temperature resistant filter tube 1202 and then discharged, and the solid state is discharged through the ash discharge port.
Further, the high temperature resistant filter pipe 1202 is an alumina fiber high temperature filter pipe.
Further, the high-temperature resistant filter pipe is adsorbed with a catalyst for converting tail gas.
Further, the catalyst comprises vanadium pentoxide, titanium dioxide, thiourea, a dispersing agent and a pore filling agent. The catalyst is immersed in the high-temperature resistant filter tube in the form of solution. Specifically, each in the catalyst solution
The refractory filter tube 1202 is immersed in the solution, so that the components in the solution are absorbed by the refractory filter tube 1202, and the catalyst remains in the refractory filter tube 1202 after drying. After being filtered by the high temperature resistant filter tube 1202, harmful substances in the tail gas are decomposed into harmless substances by the catalyst, so that the environment is protected.
Further, the disperser is tween 60; the pore filler is dodecyl trimethyl ammonium chloride or dodecyl trimethyl ammonium bromide.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. The coal water slurry combustion steam boiler is characterized by comprising a boiler body, wherein a combustion hearth is arranged in the boiler body; a separation wall for separating the combustion chamber into a combustion chamber and a water tank chamber is arranged in the combustion furnace chamber, and the combustion chamber is communicated with the upper end of the water tank chamber; one end of the combustion cavity is provided with a water coal gun insertion opening and an air inlet, the air inlet is communicated with an air supply device pipeline, a water coal gun is inserted into the water coal gun insertion opening, and the water coal gun is communicated with a coal supply device pipeline; a circulating tank is arranged at the upper end of the water tank cavity, a water storage tank is arranged at the lower end of the water tank cavity, a plurality of sewer pipes are arranged between the upper end of the water storage tank and the bottom end of the circulating water tank, and the sewer pipes are communicated with the water storage tank and the circulating water tank; a plurality of circulating water pipes are arranged between the bottom end of the water storage tank and the upper end of the circulating water tank, and the circulating water pipes penetrate through the partition wall and extend into the combustion cavity; the upper end of the circulating water tank is provided with an air outlet communicated with the air storage tank, and the water storage tank is provided with a water inlet communicated with the water supply device; the bottom of the combustion cavity is provided with a plurality of ash falling holes, and the bottom of the furnace body is provided with a furnace ash collecting device; one end of the combustion cavity is provided with a U-shaped exhaust pipe, a plurality of flow distribution plates which are arranged in parallel are further arranged in the combustion cavity, and flow distribution channels are formed by the adjacent flow distribution plates; the flow distribution plate is arranged on one side of the insertion opening of the water coal gun, one end of the U-shaped exhaust pipe is arranged opposite to the air inlet, the other end of the U-shaped exhaust pipe is positioned at one end of the flow distribution channel, a tail gas discharge port is arranged at the end part of the combustion cavity, and the tail gas discharge port is close to the other end of the flow distribution channel; the tail gas discharge port is communicated with the tail material collecting device through a pipeline; the tail gas collecting device comprises a filter, a dust collecting device, a powder pump, a tail gas recycling pipe and a tail gas discharging pipe; the air inlet end of the filter is communicated with the tail gas discharge port pipeline, the exhaust end of the filter is communicated with the tail gas recovery pipe and the tail gas discharge pipe, the tail gas recovery pipe is communicated with the air inlet pipeline, and the tail gas discharge pipe is communicated with the air inlet end pipeline of the desulfurization equipment; the dust collection device with the dust discharge port pipeline intercommunication of filter, the feed end of powder pump with the dust collection device pipeline intercommunication, the discharge end with combustion chamber body pipeline intercommunication, intercommunication the discharge end with the oral area of the pipeline of combustion chamber body extends to the end of giving vent to anger of air intake.
2. A coal water slurry combustion steam boiler according to claim 1, wherein a plurality of said circulating water tubes are arranged in parallel in a plurality of rows; a row of circulating water pipes are respectively distributed in the diversion channel; the inner side wall of the combustion cavity, which is far away from the air inlet, is provided with a water tank, one end of the water tank is communicated with the circulating water tank, and the other end of the water tank is communicated with the water storage tank.
3. A water-coal-slurry combustion steam boiler according to claim 1, wherein the pipe connecting the air inlet and the air supply device is a spiral pipe.
4. A water-coal-slurry combustion steam boiler according to any one of claims 1 to 3, wherein the ash collecting means comprises an ash box provided at the bottom of the furnace body and a cooling water tank provided at the bottom end of the ash box.
5. The coal water slurry combustion steam boiler according to claim 1, wherein a wind direction guider is further arranged at the bottom of the combustion cavity and close to the air inlet, and the wind direction guider converts part of air blown into the combustion cavity from the air inlet into upward airflow; the wind direction guider is provided with a flow guide opening facing the air inlet and a spiral cavity with an upward opening, and the flow guide opening is communicated with the spiral cavity.
6. A water-coal-slurry combustion steam boiler according to claim 1, wherein the filter comprises a sealed shell, a fixed plate arranged inside the sealed shell and a plurality of high-temperature-resistant filter tubes arranged on the fixed plate; the fixed plate separates the sealed shell into an upper cavity and a lower cavity; the open end of the high-temperature-resistant filter pipe is positioned in the upper cavity; the air inlet of the filter is communicated with the lower cavity, the air outlet of the filter is communicated with the upper cavity, and the ash discharge port of the filter is positioned at the bottom of the sealed shell.
7. A water-coal-slurry combustion steam boiler according to claim 6, wherein the refractory filter tubes are alumina fiber refractory filter tubes.
8. A water-coal-slurry-fired steam boiler according to claim 7, wherein the refractory filter tube is adsorbed with a catalyst for converting exhaust gas.
9. A water-coal-slurry fired steam boiler according to claim 8, wherein the catalyst comprises vanadium pentoxide, titanium dioxide, thiourea, a dispersant and a pore filler.
10. A water-coal-slurry combustion steam boiler according to claim 9, wherein the disperser is tween 60; the pore filler is dodecyl trimethyl ammonium chloride or dodecyl trimethyl ammonium bromide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811365994.1A CN109668135B (en) | 2018-11-16 | 2018-11-16 | Water coal slurry combustion steam boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811365994.1A CN109668135B (en) | 2018-11-16 | 2018-11-16 | Water coal slurry combustion steam boiler |
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| CN109668135A CN109668135A (en) | 2019-04-23 |
| CN109668135B true CN109668135B (en) | 2020-03-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2590905C (en) * | 2000-04-28 | 2008-12-09 | Aos Holding Company | Improved water heater flue system |
| CN101514813A (en) * | 2009-03-23 | 2009-08-26 | 任少忠 | Coal burning boiler |
| CN103175297B (en) * | 2013-04-23 | 2015-05-20 | 董珊 | Water heating boiler |
| CN204005963U (en) * | 2014-07-24 | 2014-12-10 | 杭州福鼎节能科技服务有限公司 | A kind of water-coal-slurry low concentration oxygen enrichment fluidisation suspension fired boiler device |
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