CN115261074B - Tower type fire grate gasification furnace with water tank - Google Patents
Tower type fire grate gasification furnace with water tank Download PDFInfo
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- CN115261074B CN115261074B CN202210902012.8A CN202210902012A CN115261074B CN 115261074 B CN115261074 B CN 115261074B CN 202210902012 A CN202210902012 A CN 202210902012A CN 115261074 B CN115261074 B CN 115261074B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention relates to the technical field of biomass gasification furnaces, and discloses a tower-type grate gasification furnace with a water tank, which comprises a furnace body support, wherein a conical stock bin is fixedly installed in the middle of the top end of the furnace body support, a feed hopper is fixedly installed above the top end of the conical stock bin, and a steel plate shell is fixedly installed outside the conical stock bin. The gasification furnace has the advantages that the combustion efficiency of the oxidation layer is effectively improved by arranging the heat transfer air chamber, the water inlet layer and the circulating pipe are arranged, the adverse effect of the water flow cooling process at the oxidation layer on the cooling effect at the reduction layer is prevented, the cooling effect at the oxidation layer does not influence the cooling efficiency at the reduction layer, the cooling efficiency at the oxidation layer is ensured to be good enough, the targeted cooling is realized, the additional increase of energy consumption is not needed, the better cooling effect can be realized, the sudden collapse of the reduction layer is effectively reduced by arranging the structural shape of the lower part of the gasification furnace body with the large upper part and the small lower part, and all layers in the gasification furnace body can be kept stable.
Description
Technical Field
The invention relates to the technical field of biomass gasification furnaces, in particular to a tower type grate gasification furnace with a water tank.
Background
Gasification is a thermochemical conversion of biomass in which the higher molecular weight organic hydrocarbon chains are cracked to lower molecular weight CO, H under incomplete combustion conditions 2 、CH 4 And the like, and if a gaseous medium is not used, it is called dry distillation; the current common and mature gasification technology is air biomass gasification technology, biomass fuel gas takes agricultural and forestry wastes as raw materials, C in the biomass fuel gas is combustible gas obtained by oxidation, reduction and pyrolysis transformation of C under anoxic thermodynamic conditions, and the gasification process is divided into air gasification, oxygen gasification, steam and oxygen mixed gasification, hydrogen gasification and the likeThe biomass fuel gas is prepared by four processes of oxidation reaction, reduction reaction, pyrolysis, drying and the like of biomass raw materials, and the generated combustible gas is the biomass fuel gas.
The biomass gasification furnace has the following problems in the gasification furnace because the gas production is continuous and stable, the stability of each layer in the furnace is important to maintain, the corresponding temperature of each layer is different, and the temperature difference exists:
1. in an oxidation high-temperature area, the temperature is too high, a material which can resist the high temperature of 1200 ℃ is difficult to find, and the furnace wall is easy to burn.
2. Even if the gasification furnace is provided with a heat insulation material, the temperature gradient difference between the gasification furnace and the surrounding environment is large, heat is easy to diffuse into the environment, energy is wasted, and the production environment is damaged.
3. Biomass feedstock gets into the gasifier from the furnace roof and goes out the gasifier to bottom ash sediment, through such a process of drying, thermal cracking, reduction, oxidation combustion in the stove, the volume constantly diminishes, under equal cross-section about the gasifier, the bed of material collapses appears in the stove easily, destroys whole reaction layer, causes the gas production volume low, and the gas quality is poor.
Disclosure of Invention
Aiming at the defects of the existing tower type fire grate gasification furnace proposed in the background technology in the use process, the invention provides the tower type furnace exhaust gasification furnace with the water tank, which has the advantages of timely cooling the furnace wall, promoting the oxidation reaction of an oxidation layer and reducing the collapse phenomenon of a material layer, and solves the technical problems proposed in the background technology.
The invention provides the following technical scheme: the utility model provides a take water tank tower grate gasifier, includes the furnace body support, the top middle part fixed mounting of furnace body support has the toper feed bin, the top fixed mounting of toper feed bin has the feeder hopper, the outside fixed mounting of toper feed bin has the steel sheet shell, the top both sides fixed mounting of steel sheet shell has the gas outlet pipe, the bottom middle part fixed mounting of steel sheet shell has the tower row, fixed mounting has the heat preservation cotton on the inside wall of steel sheet shell, the inboard fixed mounting of heat preservation cotton has insulating brick, the inboard fixed surface of insulating brick installs the gasifier body, the outside fixed mounting in bottom of gasifier body has the heat transfer air chamber, fixed mounting has the intake pipe in the inner chamber of heat transfer air chamber, the outside fixed mounting of heat transfer air chamber has the water tank, the bottom below fixed mounting of water tank has the water inlet layer, top one side fixed mounting of water tank has the outlet pipe, the inner chamber bottom fixed mounting of water tank has the circulating pipe, the slag notch has been seted up to the bottom of gasifier body, the top opposite side fixed mounting of water tank has boiler drain pipe.
Preferably, the upper part of the gasification furnace body is cylindrical, and the lower part of the gasification furnace body is circular truncated cone with a large upper part and a small lower part.
Preferably, the heat transfer air chamber is in a ring shape, the top of the heat transfer air chamber is inclined outwards, the outward inclination angle value of the heat transfer air chamber is matched with the inclination angle value of the structural shape of the gasification furnace body, the inner cavity of the heat transfer air chamber is divided into an upper cavity and a lower cavity, the positions of the two cavities are respectively corresponding to the positions of a reduction layer and an oxidation layer in the gasification furnace body, the two cavities of the heat transfer air chamber are filled with gas, and the surface of the heat transfer air chamber has heat conductivity.
Preferably, the upper portion body shape of intake pipe is the S font, and the upper portion body overlooking shape of intake pipe is the annular, the lower part body of intake pipe is the L font, and the lower part body overlooking shape of intake pipe is the annular, top one side of intake pipe is equipped with the columniform gas-supply pipe, the surface of intake pipe has the heat conductivity.
Preferably, the water tank is in the shape of an annular cavity with a small upper part and a large lower part, the water inlet layer at the bottom of the water tank and the water outlet layer at the top of the water tank are respectively and fixedly connected with an open type water storage barrel higher than the position of the water tank, a water level meter is arranged in the water storage barrel, and the surface of the water tank has thermal conductivity.
Preferably, the water inlet layer is in a ring shape, the inner side wall surface of the water inlet layer is in an open hollow shape, an opening is formed in the outer side surface of the water inlet layer, the pipe body of the circulating pipe is a circular pipe body, the pipe opening at one end of the circulating pipe is communicated with the top end of the water inlet layer, the pipe opening at the other end of the circulating pipe is communicated with the inner cavity of the water tank, the pipe body in the middle of the circulating pipe is in a ring shape, the pipe body is located in the lower cavity of the heat transfer air chamber, and the circulating pipe has heat conductivity.
The invention has the following beneficial effects:
1. according to the invention, the heat transfer air chamber is arranged, high temperature contained on the wall of the gasification furnace body is conducted by the heat transfer air chamber, so that the temperature of the gas in the inner cavity of the heat transfer air chamber is raised, a high-temperature environment is formed in the upper cavity of the heat transfer air chamber, and then the heat energy in the upper cavity of the heat transfer air chamber is absorbed by the air circulating in the air inlet pipe, so that the temperature in the upper cavity of the heat transfer air chamber is reduced, the surface temperature of the wall of the furnace at the position of the reduction layer is reduced, the damage of the wall due to overheating is effectively prevented, the temperature of the gas in the air inlet pipe is raised due to the absorption of the heat energy, the gas is discharged into the oxidation layer through the bottom of the heat transfer air chamber, and the biomass raw material in the oxidation layer is more rapidly oxidized and combusted due to the fact that the air has a certain temperature when passing through, so that the combustion efficiency of the oxidation layer is effectively improved.
2. According to the invention, through arranging the water inlet layer and the circulating pipe, the furnace wall where the oxidation layer is located is subjected to relatively high-efficiency heat conduction and temperature reduction by utilizing water flow circulating inside the water inlet layer and the circulating pipe, so that the furnace wall where the oxidation layer is located is prevented from being damaged due to excessive heating, meanwhile, due to the high-efficiency heat dissipation of the water inlet layer and the circulating pipe, the water has relatively high temperature, and further is similar to the gas environment temperature in the upper chamber of the heat transfer air chamber located at the reduction layer, and the water tank and the furnace wall where the reduction layer is located are separated by the upper chamber of the heat transfer air chamber, so that interval conduction loss exists during heat conduction, therefore, the water flow has low temperature reduction efficiency at the reduction layer, so that the temperature reduction effect at the oxidation layer is prevented from being adversely affected by the water flow temperature reduction process at the reduction layer, the temperature reduction efficiency at the reduction layer is not affected, the temperature reduction efficiency at the oxidation layer is ensured to be good enough, targeted temperature reduction is achieved, no extra energy consumption is required, and a relatively good temperature reduction effect can be achieved.
3. According to the invention, the lower part of the gasification furnace body is in a structure shape with a large upper part and a small lower part, so that the sectional area of the gasification furnace body is gradually reduced, the raw material amount of the reduction layer is larger than that of the oxidation layer, and the density of the reduction layer is larger than that of the oxidation layer, therefore, when the raw material density of the oxidation layer is reduced, the oxidation layer is deficient, the densities of the reduction layer and the oxidation layer are reduced because the reduction layer and the oxidation layer simultaneously carry out required reactions, and the furnace wall of the gasification furnace body is inclined because the lower part of the gasification furnace body is in a structure shape with a large upper part and a small lower part, so that when the density of the reduction layer is reduced, the residual raw materials in the reduction layer gather to the middle part and then fall to the oxidation layer along the furnace wall of the gasification furnace body, and the deficiency filling of the oxidation layer is carried out, thereby effectively reducing the occurrence of sudden collapse of the reduction layer and enabling all the layers in the gasification furnace body to be stable.
Drawings
FIG. 1 is a schematic sectional elevation view of the structure of the present invention;
FIG. 2 is a partially enlarged view of the structure of the bottom of the gasification furnace of FIG. 1 according to the present invention;
FIG. 3 is a schematic sectional top view of a gasification furnace according to the present invention.
In the figure: 1. a furnace body support; 2. a conical stock bin; 3. a feed hopper; 4. a steel plate housing; 5. a gas outlet pipe; 6. a tower row; 7. heat preservation cotton; 8. insulating bricks; 9. a gasification furnace body; 10. a heat transfer gas chamber; 11. an air inlet pipe; 12. a water tank; 13. feeding a water layer; 14. a water outlet pipe; 15. a circulation pipe; 16. a slag outlet; 17. to the boiler drain.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-3, a tower type grate gasifier with a water tank comprises a furnace body support 1, a conical bin 2 is fixedly installed in the middle of the top end of the furnace body support 1, a feed hopper 3 is fixedly installed above the top end of the conical bin 2, a steel plate shell 4 is fixedly installed outside the conical bin 2, gas outlet pipes 5 are fixedly installed on two sides of the top end of the steel plate shell 4, a tower grate 6 is fixedly installed in the middle of the bottom end of the steel plate shell 4, heat insulation cotton 7 is fixedly installed on the inner side wall of the steel plate shell 4, heat insulation bricks 8 are fixedly installed on the inner side of the heat insulation cotton 7, a gasification furnace body 9 is fixedly installed on the surface of the inner sides of the heat insulation bricks 8, through the arrangement of the heat insulation cotton 7, the heat insulation bricks 8 and the gasification furnace body 9, furnace wall design is performed according to different temperature gradients in the gasification furnace, not only is the manufacturing cost saved, but also the weight of the furnace body is reduced, the difficulty of manufacturing and installation is reduced, a heat transfer air chamber 10 is fixedly installed outside the bottom end of the gasification furnace body 9, an air inlet pipe 11 is fixedly installed in the inner cavity of the heat transfer chamber 10, a water tank 12 is fixedly installed outside the water tank 12 is fixedly installed below the bottom end of the water tank 12, a water inlet pipe 15 is fixedly installed in the water tank 12, the boiler body, the water tank is installed, the water tank is used as a heat transfer pipe 17, the boiler body, the water pipe 17, the boiler body is installed, the boiler body is used for recycling water pipe 17, and the boiler can be used for recycling water pipe 17, and the boiler body can be used for recycling.
Referring to fig. 1-2, the upper portion of the gasification furnace 9 is cylindrical, the lower portion of the gasification furnace 9 is truncated cone-shaped with a large top and a small bottom, and the lower portion of the gasification furnace 9 is configured with a large top and a small bottom, so that the sectional area of the gasification furnace 9 is gradually reduced, after the biomass raw material enters the gasification furnace 9, the biomass raw material undergoes a series of reactions such as drying, thermal cracking, reduction, and oxidation combustion, and the density of the biomass raw material is continuously reduced, and particularly, when the oxidation layer undergoes oxidation combustion, the raw material is more rapidly consumed, so that when the density of the raw material in the oxidation layer is reduced, the oxidation layer is deficient, and because the furnace wall of the reduction layer and the oxidation layer of the gasification furnace 9 has a large top and a small bottom, the raw material amount in the reduction layer is greater than the raw material amount in the oxidation layer, and the density of the reduction layer is greater than the density of the oxidation layer, and when the reduction layer and oxidation layer simultaneously undergo respective required reactions, the density of the reduction layer is also reduced, and the furnace wall of the gasification furnace 9 is inclined, the raw material remains in the middle, and then drops to the oxidation layer along the gasification furnace 9, thereby effectively reducing the internal collapse of the gasification furnace wall.
Referring to fig. 1-2, the heat transfer chamber 10 is circular, the top of the heat transfer chamber 10 is inclined outward, the outward inclination angle of the heat transfer chamber 10 is matched with the inclination angle of the gasification furnace 9, the inner chamber of the heat transfer chamber 10 is divided into an upper chamber and a lower chamber, the two chambers are respectively corresponding to the reduction layer and the oxidation layer of the gasification furnace 9, the two chambers of the heat transfer chamber 10 are filled with gas, the surface of the heat transfer chamber 10 has thermal conductivity, by installing the heat transfer chamber 10, the surface thermal conductivity of the heat transfer chamber 10 is utilized to conduct the high temperature contained in the furnace wall of the gasification furnace 9, so that the gas in the inner chamber of the heat transfer chamber 10 is heated up to form a high temperature environment, and the heat transfer chamber 10 is divided into two chambers, the upper chamber of the heat transfer chamber 10 is located opposite to the reduction layer, therefore, the temperature of the gas environment inside the upper chamber of the heat transfer air chamber 10 is close to that of the reduction layer, air circulating through the air inlet pipe 11 absorbs heat energy inside the upper chamber of the heat transfer air chamber 10 through the air outside the heat transfer air chamber 10 because the temperature of the air outside the heat transfer air chamber 10 is far lower, and then when the air inside the air inlet pipe 11 flows in the upper chamber of the heat transfer air chamber 10, the temperature inside the upper chamber of the heat transfer air chamber 10 is reduced, if the temperature inside the upper chamber of the heat transfer air chamber 10 is reduced, the temperature of the surface of the wall where the reduction layer is located is reduced through wall surface conduction, and the temperature of the gas inside the air inlet pipe 11 is increased through the absorbed heat energy and then discharged into the oxidation layer through the bottom cavity of the heat transfer air chamber 10, based on the conduction process, the conditions of the reduction layer and the oxidation layer inside the device are analyzed in a combined mode, because the temperature of the existing oxidation layer is generally 1200 ℃, the temperature of the reduction layer is 900 ℃, the temperature difference conduction is adopted, in order to ensure the oxidation combustion effect of the oxidation layer, the temperature of the reduction layer can be higher than 900 ℃, redundant temperature is not beneficial to the reduction layer and can be conducted to the surface of the furnace wall where the reduction layer is located to the greatest extent, the furnace wall is heated too much and is easily damaged, when gas in the gas inlet pipe 11 flows, the gas is conducted through the internal gas environment of the cavity in the heat transfer gas chamber 10 and the wall surface between the heat transfer gas chamber 10 and the gasification furnace body 9, so that the high temperature at the reduction layer can be conducted and absorbed, the overheating of the reduction layer is avoided, the gas quantity circulating in the gas inlet pipe 11 is set, the absorbable heat value is the redundant heat value at the reduction layer, the gas in the gas inlet pipe 11 can be conducted and cooled, the temperature at the reduction layer is about 900 ℃, the heated air which absorbs the redundant waste heat energy of the reduction layer is exhausted into the oxidation layer along the pipeline of the gas inlet pipe 11, and the temperature difference between the oxygen in the air and the environmental temperature of the oxidation layer is shortened due to the air, so that raw materials in the oxidation layer can be rapidly oxidized, and the oxidation combustion efficiency of the raw materials in the oxidation layer is effectively improved.
Referring to fig. 2 to 3, an upper tubular body of the air inlet pipe 11 is S-shaped, an upper tubular body of the air inlet pipe 11 is annular in a top view, a lower tubular body of the air inlet pipe 11 is L-shaped, a lower tubular body of the air inlet pipe 11 is annular in a top view, a cylindrical air delivery pipe is disposed on one side of a top end of the air inlet pipe 11, and a surface of the air inlet pipe 11 has thermal conductivity.
Referring to fig. 2-3, the water tank 12 is a ring-shaped water tank with a small top and a large bottom, the ring-shaped water tank 12 is disposed in the high temperature region of the gasification furnace, the water inlet layer 13 at the bottom of the water tank 12 and the water outlet pipe 14 at the top of the water tank 12 are respectively and fixedly connected to an open water storage barrel higher than the water tank 12, a water level gauge is disposed inside the water storage barrel, the surface of the water tank 12 has thermal conductivity, the water storage barrel is disposed higher than the water tank 12 and is provided with the water level gauge, so that when water is stored in the water storage barrel, the water inside the water tank 12 can be kept in a full water state, no dry burning accident occurs inside the water tank 12, and the water storage barrel is open, so that the water tank 12 is not pressurized.
Referring to fig. 2 to 3, the water inlet layer 13 is in the shape of a circular ring, the inner side wall surface of the water inlet layer 13 is in the shape of an open hollow, an opening is formed on one side surface of the outside of the water inlet layer 13, the pipe body of the circulating pipe 15 is a circular pipe, one end pipe orifice of the circulating pipe 15 is communicated with the top end of the water inlet layer 13, the other end pipe orifice of the circulating pipe 15 is communicated with the inner cavity of the water tank 12, the middle pipe body of the circulating pipe 15 is in the shape of a circular ring, and the part of the pipe body is located in the lower cavity of the heat transfer air chamber 10, the circulating pipe 15 has thermal conductivity, so that the temperature inside the oxide layer is high, and the furnace wall where the oxide layer is located needs to bear a high temperature, but the existing furnace wall cannot bear the high temperature for a long time, therefore, by arranging the water inlet layer 13 and the circulating pipe 15, when the low-temperature water in the external water storage barrel flows into the water inlet layer 13, the water fills the pipe body of the water inlet layer 13, and flows upwards into the pipe body of the circulating pipe 15, continuously upwards flows until the inner cavity of the water tank 12 is filled, and then flows back to the water storage barrel through the water outlet pipe 14, when water circulates in the water inlet layer 13, because the surface of the inner side wall of the water inlet layer 13 is in an opening shape, the water directly contacts the surface of the furnace wall of the gasification furnace body 9 and is in cold and heat conduction with the furnace wall, the temperature of the furnace wall is rapidly reduced, at the moment, the water absorbs and takes away the overheated heat energy on the furnace wall and raises the temperature, the heated water continuously flows in the circulating pipe 15, because of the heat conduction of the wall surface of the heat transfer gas chamber 10, the gas in the lower cavity of the heat transfer gas chamber 10 conducts heat and raises the temperature, and a gas environment temperature close to the temperature of an oxide layer is formed, because the pipe body of the circulating pipe 15 is positioned in the lower cavity of the heat transfer gas chamber 10, the gas in the lower cavity of the heat transfer gas chamber 10 wraps the pipe body of the circulating pipe 15 in a surrounding way, and the contact surface of the two reaches the maximum, because the temperature of the oxide layer is high, the water flow which is heated only by carrying partial heat energy still has the temperature lower than the temperature of the oxide layer when flowing in the circulating pipe 15, and further the water flow can still perform temperature difference heat conduction with the gas environment in the lower cavity of the heat transfer air chamber 10, so that the water flow in the circulating pipe 15 is further heated, and simultaneously, the surface of the furnace wall where the oxide layer is located also achieves high-efficiency cooling, and when the water flow reaches the inner cavity of the water tank 12, because the furnace wall where the oxide layer is located performs high-efficiency cooling heat conduction, the water has high temperature, and further the temperature is similar to the gas environment temperature in the upper cavity of the heat transfer air chamber 10 located at the reduction layer, namely the temperature difference between the water tank 12 and the furnace wall where the reduction layer is located is small, and the upper cavity of the heat transfer air chamber 10 is separated from the water tank 12 and the furnace wall where the reduction layer are located, so that interval conduction loss exists during heat conduction, and the cooling efficiency of the reduction layer by the water flow is not high, therefore, the adverse effect of the water flow cooling process at the oxidation layer on the cooling effect at the reduction layer is prevented, the problem that the cooling effect of the reduction layer is inferior to that of the oxidation layer when the water flow is cooled from bottom to top due to the temperature gradient arrangement of the reduction layer and the oxidation layer when the water flow is used for cooling only in the prior art is effectively avoided, and the cooling effect at the oxidation layer is better in order to ensure the cooling effect at the oxidation layer, the water flow is generally increased or the initial temperature of the introduced water flow is lower in the prior art, but the energy consumption is increased, excessive cooling at the reduction layer is easily caused, and the reaction generation of the biomass raw materials at the reduction layer is influenced is solved, so that the cooling efficiency at the oxidation layer can be ensured by the water flow cooling arrangement of the device, the cooling efficiency at the reduction layer is not influenced, and the targeted cooling is realized, and no extra energy consumption is needed, and a better cooling effect can be achieved.
The using method of the invention has the following working principle:
when biomass gas is produced, biomass raw materials are continuously poured into a cavity of a gasification furnace body 9 through a conical stock bin 2 and a feed hopper 3 until an inner cavity of the gasification furnace body 9 is filled with the raw materials, after the raw materials are filled, the existing heating equipment is started, the gasification furnace body 9 is heated until an ambient temperature value required by drying, cracking, reducing and oxidizing inside the gasification furnace body 9 reaches a required standard value, the inside of the gasification furnace body 9 is continuously heated, meanwhile, the existing air supply equipment is started, low-temperature oxygen-containing air is continuously input into a tube body of an air inlet tube 11, when air flows, due to the heat conduction effect of the heat transfer air chamber 10 on the surface of the wall of the gasification furnace body 9, high-temperature gas environments are formed inside an upper cavity and a lower cavity of the heat transfer air chamber 10, when air flow inside the air inlet tube 11 flows in the heat transfer air chamber 10, the high-temperature environment in the upper cavity of the air inlet tube 11 conducts heat, meanwhile, the wall at the position of the reduction layer is enabled to be effectively cooled, the heated air flows downwards along the tube body of the air inlet tube 11, and flows into an oxidizing layer of the oxidizing tube orifice of the air inlet tube 11, and the oxidizing layer is improved in the oxidizing efficiency in the direction shown in the arrow of the upper cavity of the air inlet tube 11.
Meanwhile, low-temperature water in the external water storage barrel continuously flows into the water inlet layer 13, the water gradually fills the tube body of the water inlet layer 13, after the tube cavity of the water inlet layer 13 is filled, the water continuously flows upwards into the tube body of the circulating tube 15, the water continuously flows into the inner cavity of the water tank 12, the water gradually fills the inner cavity of the water tank 12, when the inner cavity of the water tank 12 is filled, the water flows back to the water storage barrel through the water outlet tube 14, cooling water circulation is achieved, when the water flows in the water inlet layer 13 and the circulating tube 15, the temperature of the furnace wall at the position of the oxide layer can be efficiently reduced, and the water flow direction in the process is shown by an arrow a in fig. 2.
And the produced dust impurity flows down through slag notch 16 during biomass gas production, and the water that becomes the hot water state has risen after the inside heat dissipation of water tank 12 is discharged into the boiler through going to boiler drain pipe 17 for boiler water uses, avoids the water source extravagant.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a take tower grate gasifier of water tank, includes furnace body support (1), its characterized in that: the boiler comprises a furnace body support (1), a conical bin (2) is fixedly mounted in the middle of the top end of the furnace body support (1), a feed hopper (3) is fixedly mounted above the top end of the conical bin (2), a steel plate shell (4) is fixedly mounted on the outer portion of the conical bin (2), a gas outlet pipe (5) is fixedly mounted on two sides of the top end of the steel plate shell (4), a tower row (6) is fixedly mounted in the middle of the bottom end of the steel plate shell (4), heat-preserving cotton (7) is fixedly mounted on the inner side wall of the steel plate shell (4), heat-preserving bricks (8) are fixedly mounted on the inner side of the heat-preserving cotton (7), a gasification furnace body (9) is fixedly mounted on the inner side surface of the heat-preserving bricks (8), a heat transfer air chamber (10) is fixedly mounted on the bottom end of the gasification furnace body (9), an air inlet pipe (11) is fixedly mounted in the inner cavity of the heat transfer air chamber (10), a water tank (12) is fixedly mounted on the outer portion of the heat transfer air chamber (10), a water inlet layer (13) is fixedly mounted below the bottom end of the water tank (12), a water outlet pipe (14) is fixedly mounted on one side of the top end of the water tank (12), a water outlet pipe (17) is mounted on the other side of the gasification furnace body (17) and a water outlet pipe (17) is mounted on the other side, the upper part of the gasification furnace body (9) is cylindrical, and the lower part of the gasification furnace body (9) is in a circular truncated cone shape with a large upper part and a small lower part;
the heat transfer air chamber (10) is annular, the top of the heat transfer air chamber (10) is inclined outwards, the outward inclination angle value of the heat transfer air chamber (10) is matched with the inclination angle value of the structural shape of the gasification furnace body (9), the inner cavity of the heat transfer air chamber (10) is divided into an upper cavity and a lower cavity, the positions of the two cavities are respectively corresponding to the positions of a reduction layer and an oxidation layer in the gasification furnace body (9), the two cavities of the heat transfer air chamber (10) are filled with gas, and the surface of the heat transfer air chamber (10) has heat conductivity;
the shape of intaking layer (13) is the ring shape, the inside wall surface of intaking layer (13) is the opening fretwork form, the outside side surface of intaking layer (13) is equipped with the opening, the body of circulating pipe (15) is circular body, the one end mouth of pipe of circulating pipe (15) is linked together with the top of intaking layer (13), the other end mouth of pipe of circulating pipe (15) is linked together with the inner chamber of water tank (12), the middle part body of circulating pipe (15) is the ring shape, and this part body is located the lower part cavity of heat transfer air chamber (10), circulating pipe (15) have the heat conductivity.
2. The tower-type grate gasification furnace with the water tank as claimed in claim 1, wherein: the utility model discloses a heat-conducting air inlet pipe, including intake pipe (11), the upper portion body shape of intake pipe (11) is the S font, and the upper portion body overlooking shape of intake pipe (11) is the annular, the lower part body of intake pipe (11) is the L font, and the lower part body overlooking shape of intake pipe (11) is the annular, top one side of intake pipe (11) is equipped with the columniform gas-supply pipe, the surface of intake pipe (11) has the heat conductivity.
3. The tower-type grate gasification furnace with the water tank of claim 1, characterized in that: the water tank (12) is in an annular cavity with a small top and a big bottom, a water inlet layer (13) positioned at the bottom end of the water tank (12) and a water outlet pipe (14) positioned at the top end of the water tank (12) are respectively and fixedly connected with an open water storage barrel higher than the position of the water tank (12), a water level meter is arranged inside the water storage barrel, and the surface of the water tank (12) has heat conductivity.
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| CN202210902012.8A CN115261074B (en) | 2022-07-29 | 2022-07-29 | Tower type fire grate gasification furnace with water tank |
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| CN202210902012.8A CN115261074B (en) | 2022-07-29 | 2022-07-29 | Tower type fire grate gasification furnace with water tank |
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| EP2597137A1 (en) * | 2010-07-20 | 2013-05-29 | Sunshine Kaidi New Energy Group Co., Ltd | Method and apparatus for biomass pyrolysis gasification via two interconnected furnaces |
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| CN113430011A (en) * | 2021-07-26 | 2021-09-24 | 赣州市怡辰宏焰能源科技有限公司 | Conical grate type biomass gasification furnace |
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| EP2356200A2 (en) * | 2008-10-23 | 2011-08-17 | Burkhardt GmbH | Method and device for thermochemically gasifying solid fuels |
| CN101782229A (en) * | 2010-03-05 | 2010-07-21 | 宁波怡诺能源科技有限公司 | Gasification furnace with cone-shaped grates |
| EP2597137A1 (en) * | 2010-07-20 | 2013-05-29 | Sunshine Kaidi New Energy Group Co., Ltd | Method and apparatus for biomass pyrolysis gasification via two interconnected furnaces |
| CN102226109A (en) * | 2011-05-23 | 2011-10-26 | 中国东方电气集团有限公司 | Multistage series-connection gasifier chamber structure |
| CN206089600U (en) * | 2016-08-31 | 2017-04-12 | 丹东蓝天环保锅炉制造有限公司 | No grate gasifier polycrystalline substance |
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