Energy-saving water heating gasification furnace
The energy-saving water-heating gasifier, with its double-layer oxygen control structure and heat exchange tube array design, solves the problems of traditional gasifiers lacking heating and having low heat utilization, achieving both high-efficiency combustion and heating, and is suitable for rural and urban residents.
Patent Information
- Application Number
- CN202520193668.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Traditional gasification furnaces lack heating functions in rural areas, have low heat utilization rates, and poor oxygen regulation, resulting in incomplete combustion or the production of black smoke.
It adopts a double-layer oxygen control structure and heat exchange tube bank design. The side wall and bottom wall of the furnace body are double-layer structures with hollow interlayers. The hollow interlayers are connected to the heating pipes, and the heat exchange tube bank is located inside the furnace to control the oxygen content and improve the heat utilization rate.
It combines the functions of boiling water and cooking with heating, has high heat energy utilization, complete combustion without black smoke, and is suitable for use in rural areas and urban-rural fringe areas.
Smart Images
Figure CN223537678U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent application relates to an energy-saving water heating vaporization furnace, belonging to the field of stoves or energy conservation. Background Technology
[0002] A gasifier, also known as a (straw) gasifier or (biomass) gasifier, is a furnace that uses a high-temperature, oxygen-deficient environment to pyrolyze or pyrolyze combustible materials such as straw or biomass to produce combustible gases. The pyrolysis or pyrolysis process is called gasification or pyrolysis. The combustible gas is a mixture of gases, mainly including carbon monoxide, hydrogen, methane, oxygen, and nitrogen.
[0003] Existing gasification furnaces generally consist of a hollow furnace body, with the interior forming the furnace chamber. A furnace opening is located in the upper part of the furnace chamber or the furnace body, and a slag drain is located at the bottom of the furnace chamber. Below the slag drain is a slag discharge chamber, into which a slag discharge box is inserted to close the chamber. A filling port, connected to the furnace chamber, is located in the middle of the furnace body and has a sealing door. Therefore, the furnace chamber of a traditional gasification furnace is a semi-sealed structure, creating a high-temperature, low-oxygen combustion environment for the combustible material. This allows the material to decompose into combustible gases such as carbon monoxide under these conditions. Traditional gasification furnaces are widely used in rural areas and peri-urban areas due to their simple structure, low price, high calorific value of carbon monoxide and other combustible gases, and low black smoke production. However, traditional gasification furnaces also have the following shortcomings: 1. In rural areas, there is not only a need for cooking with a stove, but also a need for heating in winter. Traditional gasification furnaces only have a combustion-supporting function and no heating function, so they cannot solve the problems of winter heating in rural areas at the same time; 2. When the furnace is used for heating, there is a problem of excessive heat loss from the furnace body and low heat utilization rate; 3. The key to the pyrolysis process of the gasification furnace is the control of the oxygen-deficient environment. When there is too little oxygen, the combustibles will not burn completely, resulting in a large amount of black smoke. When there is too much oxygen, the proportion of complete combustion is greater, resulting in less pyrolysis. Traditional gasification furnaces have a simple structure and lack the function of regulating oxygen (air). Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide an energy-saving water heating vaporizer with a reasonable structure, which has both water boiling and cooking functions as well as heating functions, low heat loss, high heat energy utilization rate, good vaporization effect, and the function of regulating oxygen (air) in the furnace.
[0005] To solve the above-mentioned technical problems, this patent application includes a furnace body. The bottom of the furnace chamber of the furnace body is provided with a slag drain, and a slag discharge chamber is provided below the slag drain. A slag discharge box that can close the slag discharge chamber is inserted into the slag discharge chamber. A filling port that communicates with the furnace chamber is provided in the middle of the furnace body. A sealing door is provided on the filling port. A furnace opening is provided at the top of the furnace body. Its structural features are: the side walls and bottom walls of the furnace body are double-layer structures containing hollow interlayers. The hollow interlayers are filled with heating gas or liquid that can communicate with heating pipes. Several heat exchange tubes arranged horizontally at intervals are provided on the furnace body below the furnace opening. The two ends of the heat exchange tubes are connected to the adjacent hollow interlayers.
[0006] This patent application primarily utilizes a double-layer oxygen control structure to achieve both heating and cooking functions, resulting in low heat loss, high thermal energy utilization, and the ability to regulate oxygen (air) within the furnace. The double-layer oxygen control structure mainly comprises a double-layer furnace body and a heat exchange tube array at the furnace opening. Specifically, the double-layer structure refers to the entire furnace body being double-layered, meaning both the side walls and bottom walls are double-layered, with hollow interlayers within each, and these interlayers are interconnected. The double-layer structure serves several purposes. Firstly, the hollow interlayers can connect to heating pipes or a heating system, allowing the heat medium (gas or liquid) within the hollow interlayers to circulate through the heating pipes, thus providing heating in winter. Secondly, the double-layer structure enhances the furnace's sealing, eliminating the possibility of air leakage and ensuring a high-temperature, oxygen-deficient environment within the furnace, which is beneficial for the vaporization of combustibles. The third function of the double-layer structure is to upgrade the traditional single-layer medium (furnace wall) of the furnace body to a three-layer medium: the inner medium (inner wall of the furnace body), the heat medium in the hollow interlayer, and the outer medium (outer wall of the furnace body). In this way, besides the heat supplied upwards, the remaining heat in the furnace is almost entirely transferred to the inner medium of the furnace body through heat transfer. The inner medium then transfers almost all its heat to the heat medium in the hollow interlayer, which provides heating through the heating pipes, thus being effectively utilized. Simultaneously, the heat medium in the hollow interlayer also transfers a small portion of its heat to the outer medium of the furnace body through heat transfer, while the outer medium transfers heat to the surrounding air. Since the furnace body is generally located outdoors or in the kitchen, the heat transferred by the outer medium is essentially wasted. Compared to the heat transferred by the furnace body of a traditional stove, the heat transferred by the outer medium in this patent application is negligible, because the vast majority of the heat is transferred to the heating system by the heat medium, meaning that the majority of the heat is effectively utilized. Therefore, the third function of the double-layer structure is to improve thermal energy utilization and effectively reduce heat loss.
[0007] In this patent application, the heat exchange tube bank consists of several heat exchange tubes arranged within the furnace, with both ends of each tube connected to adjacent hollow interlayers. The heat exchange tubes are arranged laterally at intervals to form the heat exchange tube bank. One function of the heat exchange tube bank is that after being heated within the furnace, the heat medium within its internal cavity automatically circulates to the heating system under high temperature, thereby improving heating efficiency and temperature. A second function is that the gaps between the heat exchange tubes provide upward channels for hot air or combustible gases within the furnace, allowing heat to reach the furnace opening and above it for tasks such as boiling water or cooking, thus serving as a heat distribution mechanism. A third function is the control of the amount of combustion gas flowing out of the furnace opening, i.e., the control of the oxygen content and degree of combustion within the furnace. Specifically, the heat exchange tube bank is located below the furnace opening. The combustion gas in the furnace can only flow out of the furnace opening after passing through the gaps in the heat exchange tube bank. Therefore, the setting of the heat exchange tube bank has the function of blocking the furnace opening and increasing the flow resistance, which relatively reduces the gas flow at the furnace opening and is conducive to creating a high-temperature and oxygen-deficient environment in the furnace.
[0008] In summary, this patent application achieves both cooking and heating functions through a double-layer oxygen-controlled structure, resulting in low heat loss, high thermal energy utilization, and the ability to regulate oxygen (air) within the furnace. In use, combustibles such as straw or biomass are first fed into the furnace through the filling inlet, then ignited. Finally, the sealing door and ash discharge box are closed. The combustion of the combustibles in the furnace produces high temperatures and flue gas, which is discharged through the upper furnace opening. At this point, the furnace is almost entirely connected to the outside environment only through the upper furnace opening; a small amount of air can enter the furnace through the gap between the ash discharge box and the furnace body, creating a high-temperature, oxygen-deficient environment. Under this high-temperature, oxygen-deficient environment, the straw or biomass decomposes into combustible gases such as carbon monoxide and methane, which flow out through the upper furnace opening. The combustible gases at the furnace opening mix with the surrounding air and burn, releasing a large amount of heat. Because combustion is complete, there is very little or no black smoke. Therefore, this patent application can also be used indoors in rural areas or in urban homes.
[0009] As an improvement, the heat exchange tubes are arranged in two rows with an upper and lower spacing, and the upper row of heat exchange tubes is staggered with the lower row of heat exchange tubes.
[0010] As a further improvement, the outer periphery of the furnace opening is a hollow ring, and the outer periphery of the inner cavity of the hollow ring is connected to the hollow interlayer.
[0011] As a further improvement, a heating chamber is provided on the furnace body above the furnace opening, and a flue pipe is provided on the furnace body corresponding to the heating chamber. A top ring is fixedly connected to the furnace body above the heating chamber. The center of the top ring is a through-hole that runs vertically through the furnace. The top ring is a double-layer structure with an inner cavity, and the inner cavity of the top ring is connected to the hollow interlayer.
[0012] In one implementation, the diameter of the furnace opening is 1 / 3 to 1 / 4 of the furnace chamber diameter or width, and the diameter of the through opening is 1.7 to 3 times the furnace opening diameter.
[0013] As an improvement, several support rings are fixedly connected to the inner wall of the furnace in sequence. Each support ring is composed of several support blocks that extend vertically and are spaced laterally. Two adjacent support blocks of each support ring and the corresponding furnace wall form a semi-enclosed air duct that runs vertically through the furnace. The adjacent support blocks of the upper and lower adjacent support rings are staggered, thus forming a two-way structure where any air duct at the bottom is simultaneously connected to two adjacent air ducts at the top, and further forming a multi-way structure where any air duct at the bottom is simultaneously connected to several air ducts at the top.
[0014] In one implementation, the upper row of heat exchange tubes consists of 5 tubes, and the lower row of heat exchange tubes consists of 4 tubes.
[0015] As a preferred embodiment, the heat exchange tube has a circular cross-section, or a triangle with the tip pointing upwards and the bottom downwards, or a rectangle with the edges pointing upwards.
[0016] As an improvement, the surfaces of the hollow ring and the top ring are provided with convex or concave textured patterns.
[0017] As a further improvement, the slag stack includes a front half and a rear half that are hinged to the bottom of the furnace via a hinge shaft, and a handle is fixed to the outer end of the hinge shaft.
[0018] In summary, the energy-saving water heating gasification furnace with this structure is reasonable, and has both water boiling and cooking functions as well as heating functions. It has low heat loss, high heat energy utilization rate, good gasification effect, and also has the function of regulating oxygen (air) in the furnace. It is especially suitable for use by residents in rural areas or urban-rural fringe areas. Attached Figure Description
[0019] This patent application will be further described in detail with reference to the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the structure of the present invention in its closed state;
[0021] Figure 2 This is a schematic diagram of the structure of the present invention in its open state;
[0022] Figure 3 This is a three-dimensional half-sectional structural diagram of the present invention;
[0023] Figure 4 for Figure 1 A schematic diagram of the structure after removing the outer layer of the furnace body;
[0024] Figure 5 for Figure 4A schematic diagram of the structure after removing the top ring and heating cavity;
[0025] Figure 6 for Figure 5 A schematic diagram of the structure after removing the upper hollow ring;
[0026] Figure 7 for Figure 6 A schematic diagram of the structure after removing the upper heat exchange tubes;
[0027] Figure 8 This is a schematic diagram of the slag discharge structure in its supported state.
[0028] Figure 9 This is a schematic diagram of the slag discharge structure during the slag discharge phase.
[0029] Figure 10 This is a schematic diagram of a triangular heat exchange tube.
[0030] Figure 11 This is a schematic diagram of a rectangular heat exchange tube. Detailed Implementation
[0031] like Figure 1-11As shown, in this embodiment, the energy-saving water-heating vaporization furnace includes a furnace body 1, with a slag drain 3 at the bottom of the furnace chamber 2. A slag discharge chamber 4 is located below the slag drain, and a slag discharge box 5, capable of closing the chamber, is inserted inside. A filling port 6, communicating with the furnace chamber, is located in the middle of the furnace body, and a sealing door 7 is provided on the filling port. A furnace opening 8 is located at the top of the furnace body. In this patent application, the side walls and bottom walls of the furnace body are a double-layer structure containing a hollow interlayer 9, filled with heating gas or liquid that can communicate with the heating pipes. Several horizontally spaced heat exchange tubes 10 are arranged on the furnace body below the furnace opening, with both ends of the heat exchange tubes correspondingly connected to the adjacent hollow interlayers. This patent application mainly includes the double-layer structure of the furnace body and the heat exchange tube array at the furnace opening. Specifically, the double-layer structure refers to the entire furnace body being double-layered, meaning both the side walls and bottom walls are double-layered, with hollow interlayers within each. These hollow interlayers are interconnected. The double-layer structure serves several purposes. First, the hollow interlayers can connect to heating pipes or a heating system, allowing the heat medium (gas or liquid) within the interlayers to circulate through the heating pipes, thus providing heating in winter. Second, the double-layer structure enhances the furnace's sealing, eliminating the possibility of air leakage and ensuring a high-temperature, oxygen-deficient environment within the furnace, which is beneficial for the vaporization of combustibles. Third, the double-layer structure upgrades the traditional single-layer medium (furnace wall) of the furnace body to a triple-layer medium: an inner medium (inner furnace wall), a heat medium within the hollow interlayers, and an outer medium (outer furnace wall). In this way, besides the heat supplied upwards, the remaining heat within the furnace is primarily transferred to the inner medium of the furnace body through heat transfer. The inner layer of the furnace body transfers almost all heat to the heat medium within the hollow interlayer via heat transfer, which then provides heating through the heating pipes, thus being effectively utilized. Simultaneously, the heat medium within the hollow interlayer also transfers a small portion of heat to the outer layer of the furnace body via heat transfer, which in turn transfers the heat to the surrounding air. Since the furnace body is typically located outdoors or in the kitchen, the heat transferred by the outer layer is essentially wasted. Compared to the heat transferred by the furnace body of traditional stoves, the heat transferred by the outer layer of the furnace body in this patent application is negligible, as the vast majority of the heat is transferred to the heating system, meaning that the majority of the heat is effectively utilized. Therefore, the third function of the double-layer structure is to improve thermal energy utilization efficiency and effectively reduce heat loss.
[0032] In this patent application, the heat exchange tube bank consists of several heat exchange tubes arranged within the furnace, with both ends of each tube connected to adjacent hollow interlayers. The heat exchange tubes are arranged laterally at intervals to form the heat exchange tube bank. One function of the heat exchange tube bank is that after being heated within the furnace, the heat medium within its internal cavity automatically circulates to the heating system under high temperature, thereby improving heating efficiency and temperature. A second function is that the gaps between the heat exchange tubes provide upward channels for hot air or combustible gases within the furnace, allowing heat to reach the furnace opening and above it for tasks such as boiling water or cooking, thus serving as a heat distribution mechanism. A third function is the control of the amount of combustion gas flowing out of the furnace opening, i.e., the control of the oxygen content and degree of combustion within the furnace. Specifically, the heat exchange tube bank is located below the furnace opening. The combustion gas in the furnace can only flow out of the furnace opening after passing through the gaps in the heat exchange tube bank. Therefore, the setting of the heat exchange tube bank has the function of blocking the furnace opening and increasing the flow resistance, which relatively reduces the gas flow at the furnace opening and is conducive to creating a high-temperature and oxygen-deficient environment in the furnace.
[0033] In summary, this patent application achieves both cooking and heating functions through a double-layer oxygen-controlled structure, resulting in low heat loss, high thermal energy utilization, and the ability to regulate oxygen (air) within the furnace. In use, combustibles such as straw or biomass are first fed into the furnace through the filling inlet, then ignited. Finally, the sealing door and ash discharge box are closed. The combustion of the combustibles in the furnace produces high temperatures and flue gas, which is discharged through the upper furnace opening. At this point, the furnace is almost entirely connected to the outside environment only through the upper furnace opening; a small amount of air can enter the furnace through the gap between the ash discharge box and the furnace body, creating a high-temperature, oxygen-deficient environment. Under this high-temperature, oxygen-deficient environment, the straw or biomass decomposes into combustible gases such as carbon monoxide and methane, which flow out through the upper furnace opening. The combustible gases at the furnace opening mix with the surrounding air and burn, releasing a large amount of heat. Because combustion is complete, there is very little or no black smoke. Therefore, this patent application can also be used indoors in rural areas or in urban homes.
[0034] In this embodiment, the heat exchange tubes are arranged in two rows, spaced vertically, with the upper and lower rows staggered. This patent application uses two rows of heat exchange tubes, increasing the number of tubes and the heating area, resulting in higher thermal energy utilization and thus obtaining more heating energy for better heating performance. The staggered arrangement of the upper and lower rows also increases the resistance of the passage for combustion gases or flames to flow outwards, making it easier to maintain a sealed, oxygen-deficient environment within the furnace and facilitating the continuous vaporization process.
[0035] In this embodiment, the outer periphery of the furnace opening is a hollow ring 11, and the outer periphery of the inner cavity of the hollow ring is correspondingly connected to the hollow interlayer. Designing the outer periphery of the furnace opening as a hollow ring, with the outer periphery of the inner cavity of the hollow ring correspondingly connected to the hollow interlayer, can increase the capacity of the heat medium and the heating area, resulting in higher thermal energy utilization and relatively lower heat loss.
[0036] In this embodiment, a heating chamber 12 is provided on the furnace body above the furnace opening, and a flue pipe 13 is provided on the furnace body corresponding to the heating chamber. A top ring 14 is fixedly connected to the furnace body above the heating chamber, and the center of the top ring is a through-hole 15. A furnace cover 23 is fastened to the through-hole, which can be easily closed. The top ring is a double-layer structure with an inner cavity, and the inner cavity of the top ring is connected to the hollow interlayer. In this patent application, the furnace body above the furnace opening forms a cavity, which is called the heating chamber, and the heating chamber is the cavity for external heating. A flue pipe is provided on the furnace body corresponding to the heating chamber, and the main function of the flue pipe is to provide an exhaust channel for the gas in the heating chamber. A top ring is fixedly connected to the furnace body above the heating chamber, and the center of the top ring is a through-hole. The function of the top ring or through-hole is to support a kettle or rice cooker, so that the flame in the heating chamber heats the kettle or rice cooker. In this patent application, the top ring is a double-layered structure with an inner cavity, which is connected to the hollow interlayer. This allows the residual heat from the flame after heating the kettle or rice cooker to heat the top ring before flowing into the exhaust pipe, thus heating the heat transfer medium within the top ring and further utilizing the remaining heat of the flame, effectively reducing heat loss. In this patent application, the heat transfer medium is generally tap water, and the hollow ring and top ring are two water pans located within the furnace. This double-water pan structure not only distributes heat within the furnace but also effectively absorbs residual heat from the flue gas, significantly improving heat utilization.
[0037] In this patent application, the diameter of the furnace opening is 1 / 3 to 1 / 4 of the furnace chamber diameter or width, and the diameter of the through-hole is 1.7 to 3 times the furnace opening diameter. In this embodiment, the furnace chamber diameter or width is the largest, followed by the through-hole, and the furnace opening is the smallest. The dimensional relationship between them is: the furnace opening diameter is 1 / 3 of the furnace chamber diameter or width, and the through-hole diameter is 1.7 times the furnace opening diameter. The main purpose of this design is to create a semi-enclosed structure in the furnace chamber, which is sealed and large in the lower middle part and has a small outlet at the top. This facilitates the creation of a high-temperature, oxygen-deficient environment within the furnace chamber, providing the basic conditions for vaporization. The through-hole, being much larger than the furnace opening, is primarily to accommodate the bottom of kettles and rice cookers. Generally, the larger the through-hole, the larger the heating area at the bottom of the kettle or rice cooker, and the shorter the boiling time or cooking time.
[0038] In this embodiment, several support rings 22 are sequentially fixed to the inner wall of the furnace. Each support ring consists of several support blocks 16 that extend vertically and are spaced laterally. Two adjacent support blocks of each support ring and the corresponding furnace wall form a semi-enclosed air duct 17 that runs vertically through the furnace. The adjacent support blocks of adjacent support rings are staggered, thus forming a two-way structure where any lower air duct simultaneously connects to two adjacent upper air ducts, and further forming a multi-way structure where any lower air duct simultaneously connects to several upper air ducts. Many sealing and oxygen-deficient structures within the furnace, such as the furnace opening and heat exchange tubes, are designed to create a sealed oxygen-deficient environment. However, if the sealing is excessive and oxygen deficiency is severe, it can lead to incomplete combustion or even failure to achieve pyrolysis, resulting in a large amount of black smoke. Therefore, this patent application also includes structures that increase oxygen content or combustion efficiency to suppress the sealed oxygen-deficient structure, achieving a dynamic balance between the two, thereby ensuring the continuity of the sealed oxygen-deficient state and the stability of the vaporization process. Specifically, several support rings are fixed to the inner wall of the furnace from top to bottom. Each support ring consists of several support blocks, each extending vertically and adjacent blocks being spaced laterally. Thus, two adjacent support blocks of each support ring and the corresponding furnace wall form a semi-enclosed air duct that runs vertically through the furnace interior, referred to as a C-shaped air duct for convenience. In this patent application, adjacent support blocks of adjacent support rings are staggered laterally; that is, two adjacent support blocks cannot be aligned vertically. This creates a two-way structure where any lower C-shaped air duct simultaneously connects vertically to two adjacent upper C-shaped air ducts, and further creates a multi-way structure where any lowermost C-shaped air duct simultaneously connects to several uppermost air ducts. This multi-way structure has several functions. First, the support blocks can support combustibles such as straw, biomass, or coal at the furnace edge, increasing the gaps between the combustibles and providing space, air, and circulation channels for combustion to a certain extent, thereby dynamically balancing the aforementioned sealed and oxygen-deficient structure. The second function is to create a space and airflow channel at the edge of the furnace, consisting of several C-shaped air ducts. This airflow channel is isolated from the combustibles in the furnace, or rather, is unaffected by them. Therefore, it can form an annular airflow channel around the combustibles, ensuring a continuous and stable supply of air (oxygen) to the furnace. In this patent application, the air in the furnace generally enters through the gap between the slag discharge box and the slag discharge chamber. Therefore, even when the slag discharge box is fully inserted into the slag discharge chamber, a minimum air supply to the furnace can be guaranteed. When boiling water or cooking requires more heat, the air intake can be increased by pulling out part of the slag discharge box, which is very simple to operate.
[0039] In this embodiment, there are 5 upper heat exchange tubes and 4 lower heat exchange tubes. By setting the upper heat exchange tubes to 5 and the lower heat exchange tubes to 4, and staggering them, the heating area can be further increased while ensuring the flow of combustion gases, achieving two goals at once and resulting in higher thermal energy utilization.
[0040] In this patent application, the heat exchange tube has a circular cross-section, or a triangle with the tip pointing upwards and the bottom downwards, or a rectangle with its edges pointing upwards. In this embodiment, there are three preferred tube shapes for the cross-section of the heat exchange tube: circular, triangular, and rectangular. Among them, the circular heat exchange tube structure is the simplest, most common, and has the lowest cost. When using a triangular heat exchange tube, one tip or top of the triangle points upwards, while the other two tips point downwards. The main purpose of this arrangement is to prevent ash from accumulating on the inclined sidewalls of the triangular heat exchange tube when it falls after a period of combustion in the furnace, thus improving the heat exchange efficiency. When using a rectangular heat exchange tube, one edge points upwards. The purpose of this arrangement is also to reduce ash adhesion and improve heat exchange efficiency. For a rectangular heat exchange tube, if one edge points upwards, another edge must point downwards. This ensures that the flame is guided upwards by the two inclined sidewalls at the bottom, resulting in better contact between the flame and the sidewalls and a better heat exchange effect.
[0041] In this embodiment, the surfaces of the hollow ring and the top ring are provided with convex or concave textured patterns. This design increases their surface area and improves heat absorption efficiency. Additionally, the textured pattern on the top ring increases surface friction, making it more stable and reliable when used with a kettle or rice cooker, reducing the risk of slippage.
[0042] In this embodiment, the slag baffle includes a front half-baffle 19 and a rear half-baffle 20 hinged to the bottom of the furnace via a hinge shaft 18. A handle 21 is fixed to the outer end of the hinge shaft. The slag baffle is designed in two parts, a front half-baffle and a rear half-baffle, primarily for ease of operation. Both the front and rear half-baffles are hinged to the furnace body via hinge shafts, with handles fixed to the outer ends of the hinge shafts. This allows the front and rear half-baffles to be swung by rotating the handle. In actual operation, when the handle is vertically upward, the front and rear half-baffles are connected together and on the same plane, providing the best support for the slag. For ease of description, this state is referred to as the support state. When slag discharge is required, simply shaking the handle separates the connecting parts of the front and rear half-baffles, thus discharging the slag. The operation is very simple.
Claims
1. An energy-saving water-heating gasification furnace, comprising a furnace body (1), a slag drain (3) at the bottom of the furnace chamber (2) of the furnace body (1), a slag discharge chamber (4) below the slag drain (3), a slag discharge box (5) for closing the slag discharge chamber (4) inserted in the slag discharge chamber (4), a filling port (6) communicating with the furnace chamber (2) in the middle of the furnace body (1), a sealing door (7) on the filling port (6), and a furnace opening (8) at the top of the furnace body (1), characterized in that: The side wall and bottom wall of the furnace body (1) are a double-layer structure containing a hollow interlayer (9). The hollow interlayer (9) is filled with heating gas or liquid that can be connected to the heating pipe. Several heat exchange pipes (10) are arranged horizontally at intervals on the furnace body below the furnace opening (8). The two ends of the heat exchange pipes are connected to the adjacent hollow interlayer (9).
2. The energy-saving water-heating vaporizer as described in claim 1, characterized in that: The heat exchange tubes (10) are arranged in two rows with an upper and lower interval, and the upper row of heat exchange tubes is staggered with the lower row of heat exchange tubes.
3. The energy-saving water-heating vaporizer as described in claim 1 or 2, characterized in that: The outer periphery of the furnace opening (8) is a hollow ring (11), and the inner periphery of the hollow ring (11) is connected to the hollow interlayer (9).
4. The energy-saving water-heating vaporizer as described in claim 3, characterized in that: A heating chamber (12) is provided on the furnace body above the furnace opening (8), and a flue pipe (13) is provided on the furnace body corresponding to the heating chamber (12). A top ring (14) is fixedly connected to the furnace body above the heating chamber (12). The center of the top ring (14) is a through opening (15) that runs vertically through the furnace. The top ring (14) is a double-layer structure with an inner cavity. The inner cavity of the top ring (14) is connected to the hollow interlayer (9).
5. The energy-saving water-heating vaporizer as described in claim 4, characterized in that: The diameter of the furnace opening (8) is 1 / 3 to 1 / 4 of the diameter or width of the furnace chamber (2), and the diameter of the through opening (15) is 1.2 to 1.8 times the diameter of the furnace opening (8).
6. The energy-saving water-heating vaporizer as described in claim 5, characterized in that: The inner wall of the furnace (2) is fixed with several support rings (22) in sequence. Each support ring (22) is composed of several support blocks (16) that extend vertically and are spaced horizontally. The two adjacent support blocks (16) of each support ring (22) and the corresponding furnace wall form a semi-enclosed air duct (17) that runs vertically through the furnace. The adjacent support blocks (16) of the upper and lower adjacent support rings (22) are staggered, thus forming a two-way structure where any air duct (17) below is connected to two adjacent air ducts (17) above, and thus forming a multi-way structure where any air duct (17) at the bottom is connected to several air ducts (17) at the top.
7. The energy-saving water-heating vaporizer as described in claim 6, characterized in that: The upper row of heat exchange tubes (10) consists of 5 tubes, and the lower row of heat exchange tubes (10) consists of 4 tubes.
8. The energy-saving water-heating vaporizer as described in claim 7, characterized in that: The heat exchange tube (10) has a circular cross-section, or a triangle with the tip pointing upwards and the bottom downwards, or a rectangle with the edges pointing upwards.
9. The energy-saving water-heating vaporizer as described in claim 8, characterized in that: The surfaces of the hollow ring (11) and the top ring (14) are provided with convex or concave textured patterns.
10. The energy-saving water-heating vaporizer as described in claim 9, characterized in that: The slag stack (3) includes a front half (19) and a rear half (20) hinged to the bottom of the furnace by a hinge shaft (18), with a handle (21) fixed to the outer end of the hinge shaft.