Biomass gasification combustion boiler

Abstract

The present disclosure provides a kind of biomass gasification combustion boiler, it is related to biomass gasification technical field, including furnace body, fluid inlet and at least one fluid outlet are arranged on furnace body, the inside of furnace body is provided with partition one, at least one fluid outlet is located on the lower part of partition one on furnace body, communication piece one is arranged on furnace body, and communication piece one is used to communicate the upper space of partition one in furnace body with the lower space of partition one.The present disclosure provides a kind of biomass gasification combustion boiler, when partition one constitutes barrier state and biomass is located on partition one, the heat of oxidation layer, reducing layer is transferred to partition one, biomass is preheated by partition one, and the preheated biomass is thermally decomposed, so that in the presequence process of entering oxidation layer combustion, the precursor of tar is decomposed in advance, and the biomass in the upper layer of partition one exists in the form of high fixed carbon content charcoal after thermal decomposition, which is beneficial to subsequent oxidation-reduction reaction of biomass.

Description

Technical Field

[0001] This disclosure relates to the field of biomass gasification technology, specifically to a biomass gasification combustion boiler. Background Technology

[0002] Biomass gasification combustion boilers adopt a two-step conversion process of "gasification first, then combustion". This thermochemical reaction process usually includes four continuous stages: drying stage, thermal decomposition stage, oxidation stage, and reduction stage.

[0003] like Figure 1 As shown in the structural configuration, in the existing technology, biomass gasification combustion boilers mainly exist in two types: top-suction and bottom-suction, each corresponding to different application scenarios. (1) In the updraft boiler, biomass moves from top to bottom and gasification gas flows from bottom to top. Because the biomass falls into the oxidation layer quickly and the gasification gas flows directly upward, the residence time is insufficient to crack the tar, resulting in a high oil content. (2) In a downdraft boiler, the gasified gas is forced to pass through the oxide layer under negative pressure, which allows the tar to be fully cracked. However, because it passes through the oxide layer, it unnecessarily carries ash, resulting in a high ash content. (3) Whether it is an upward or downward suction type, biomass moves freely in the furnace and the interlayer residence time is relatively short, which means that the biomass has not been fully thermally decomposed. When the biomass falls to the oxidation layer, the tar precursors will react in the form of in-situ pyrolysis on the biomass. Due to the limitations of charcoal pore structure, mass transfer resistance and other factors, the in-situ pyrolysis of tar will result in incomplete combustion. In order to enable the biomass to be fully thermally decomposed and extend the flow path of gasification gas and biomass, the furnace body needs to be lengthened.

[0004] In view of the above, we propose a biomass gasification combustion boiler. Summary of the Invention

[0005] [Technical problems solved] To address the shortcomings of existing technologies, this disclosure provides a biomass gasification combustion boiler, which has advantages such as tar gas phase cracking, biomass preheating, and multi-purpose use, and can effectively solve the problems in the background technology.

[0006] [Technical Solution] To achieve the above objectives, the technical solution adopted in this disclosure is as follows: A biomass gasification combustion boiler includes a furnace body with a fluid inlet and at least one fluid outlet. A partition is provided inside the furnace body for optionally dividing the furnace body. At least one of the fluid outlets is located on the furnace body at the lower part of the partition. A connecting member is provided on the furnace body to connect the upper space of the partition with the lower space of the partition.

[0007] Preferably, a feeding section is provided on the furnace body, which is located at the upper end of the furnace body. The fluid inlet can be located at any part of the furnace body, and is intended to introduce air into the interior of the furnace body. In the air, oxygen is the main component that participates in the chemical reaction.

[0008] Preferably, the partition can be of any structural form, such as a square plate or a circular plate as shown in the figure, which is intended to separate the furnace body. The optional separation of the furnace body means that the partition has at least two operating states in the furnace body, namely, separating the furnace body and not separating the furnace body, and is not limited to the operating mechanism of the partition. For example, the partitions can be split open.

[0009] Preferably, the connecting element can be a pipe, designed to connect the upper space of the partition element to the lower space of the partition element inside the furnace.

[0010] Preferably, valves can be provided at the fluid inlet and fluid outlet to control the flow of fluid.

[0011] Preferably, the partition is used to preheat biomass while blocking the furnace body.

[0012] Preferably, when the partition is used to preheat the biomass while blocking the furnace body, it means that the partition is blocking the furnace body, but preheating the biomass means that the biomass cannot come into contact with the flame, that is, the biomass cannot be located in the oxide layer, and the biomass is located on the partition and in contact with the partition.

[0013] Preferably, the partition is a plate-shaped structure with a cavity, and the partition is provided with an air inlet and an air outlet. The air inlet is connected to an external air supply device, and the air outlet is connected to the upper part of the partition on the furnace body, and the air outlet serves as the fluid inlet.

[0014] Preferably, the plate-like structure with a cavity refers to a partition that allows fluid to pass through the cavity. The cavity can be of any shape, but preferably it can be an "S"-shaped flow channel. This is an optional arrangement that those skilled in the art would make for the actual implementation.

[0015] Preferably, the gas supply device refers to a gas supply device such as an air pump, which is designed to accelerate gas flow. Depending on the implementation situation, heat insulation measures can be set between the gas supply device and the partition, such as using pipes of different materials to connect layer by layer to form a heat conduction barrier. In fact, the gas supply device supplies gas to the interior of the furnace in one direction, and theoretically, the heat inside the furnace will not be transferred to the gas supply device in a large amount.

[0016] Preferably, the partition is rotatable at a fixed point inside the furnace body, and a drive assembly for controlling the rotation of the partition is provided at the fixed-point rotatable part of the partition.

[0017] Preferably, the partition 1 can rotate at a fixed point inside the furnace body, meaning that the partition 1 is rotatably connected to the furnace body. In actual implementation, a hole can be made in the furnace body, and a rotating shaft that matches the hole structure can be provided on the partition 1. The partition 1 rotates through the hole and is connected to the furnace body. Since the flow of gasified gas inside the furnace body is under the premise that a negative pressure suction device is provided at the fluid outlet, it means that although a hole is made in the furnace body, the gas inside the furnace body will not escape in large quantities from the hole. Therefore, using the method of drilling a hole in the furnace body to provide the rotating part of the partition 1 is a reasonable arrangement that is acceptable under actual working conditions.

[0018] Preferably, the drive component for controlling the rotation of the partition refers to a drive component designed to control the rotation of the drive component. It can be a rotation drive component such as a motor or a motor + reducer connected to the partition, or it can be implemented through other control mechanisms that can rotate the partition. It is intended to control the rotation of the partition, and is not limited to using any specific rotation drive mechanism.

[0019] Preferably, under the premise that the spacer is arranged as a rotation control mechanism, such as Figure 5 In the structural state shown, to prevent the lower layer gas of the partition 1 in the barrier state from escaping upward through the space between partition 1, partition 2 is provided between partition 1 and partition 1, and between partition 1 and furnace body. Partition 2 plays a basic barrier role.

[0020] Preferably, a connecting member 2 is provided between the gas outlet of the partition 1 and the furnace body. The connecting member 2 can be a metal pipe.

[0021] Preferably, the air inlet and air outlet on the first partition are concentrically arranged, and a support is provided at the positions of the air inlet and the air outlet, the support being connected to the drive assembly.

[0022] Preferably, the concentric arrangement of the air inlet and outlet on the partition means that the air inlet and outlet can be arranged on the same straight line, such as... Figure 5As shown in the coaxial configuration, the support portion on the first partition can serve as the air inlet and outlet. This means that the first partition can be connected to an external air supply device by rotational connection, without needing to consider that when the air inlet and outlet are located on the non-rotating parts of the first partition, they will move synchronously during the rotation of the first partition. This means that the connecting pipes on it need to move synchronously.

[0023] Preferably, the first partition and the adjacent first partition are in an inclined state when they are used to separate the furnace body, and the first connecting member is provided on the side of the furnace body that is not provided with a fluid outlet.

[0024] Preferably, when the partition 1 and the partition 1 constitute a separation of the furnace body, it means that the partition 1 and the partition 1 are in contact, but the upper space of the partition 1 and the lower space of the partition 1 in the furnace body are not interconnected. In this state, the partition 1 is inclined. Figure 3 , 4 As shown in the structural configuration, in the lower space of partition one within the furnace body, volatiles from the upper space of partition one enter the lower space of partition one through connecting piece one. The volatiles and other gases mainly flow upwards, passing through... Figure 3 , 4 The "wave-shaped" top partition shown is designed to further extend the residence time of the gas in the oxide and reduction layers.

[0025] Preferably, given the presence of the second connecting member, the position of the gas outlet on the second connecting member connected to the furnace body is based on, for example... Figure 4 In the structural state shown, when the partitions of the furnace body are separated, that is, when the partitions are in contact with each other, the partitions form an inverted triangle area. The gas outlet on the connecting piece 2 is directly below this inverted triangle area. With this arrangement, when the biomass falls to the upper layer of the partition, that is, when the biomass is located in the inverted triangle, the gas carrying high heat can fully contact the biomass from bottom to top, thereby improving the thermal decomposition efficiency of the biomass.

[0026] Preferably, the drive assembly includes a gear fixedly connected to a fixed rotating part on a spacer, and a rack meshing with the gear. The racks on adjacent spacers are symmetrically distributed based on their corresponding gears, and multiple sets of racks are fixedly connected to each other.

[0027] Preferably, the racks on adjacent spacers are symmetrically distributed based on their corresponding gears, meaning they are arranged as follows: Figure 5The symmetrical state shown, taking the same gear as an example, when the rack is on the upper side of the gear, moving the rack to the left will cause the gear to rotate counterclockwise, while when the rack is on the lower side of the gear, moving the rack to the left will cause the rack to rotate clockwise. In this way, the control mechanism for multiple spacers with different directions is simplified, that is, the different directions of multiple spacers can be controlled by controlling the movement of the rack.

[0028] As a preferred option, compared to other types of rotational drive mechanisms, the rack and pinion mechanism can operate under heavy loads and is unaffected by the harshness of the operating environment. The movement control of the rack can be achieved by having a gear meshed on one of the racks, rotating the gear to drive the entire rack assembly to move, or by installing any type of moving drive component known and understood by those skilled in the art, such as a hydraulic cylinder, pneumatic cylinder, or electric push rod, on the rack to drive the rack to move. The selection of the moving drive component is an optional arrangement made by those skilled in the art based on the actual implementation situation, with the aim of achieving movement control of the rack.

[0029] Preferably, at least two fluid outlets are provided, with at least one fluid outlet located on the upper part of the partition in addition to the fluid outlet located on the lower part of the partition in the furnace body.

[0030] Preferably, when there are at least two fluid outlets distributed in the upper and lower layers of partition one, any one of the fluid outlets can be put into use. This means that when the fluid outlet located in the lower layer of partition one is used as the gasification gas outlet, it is similar to the effect of a downdraft gasification combustion boiler. When the fluid outlet located in the upper layer of partition one is used as the gasification gas outlet, it is similar to the effect of an updraft gasification combustion boiler. In the state where partition one forms a separation between the furnace body, and during the process of biomass thermal decomposition in the upper layer of partition one, those skilled in the art can understand that, by utilizing the density difference between tar, wood vinegar (volatile liquid) and hydrogen, carbon monoxide (volatile gas) in the volatiles, the volatile gas after thermal decomposition of biomass can be directly discharged and put into use through the fluid outlet located above. Since the volatile gas itself is combustible and can be used as an energy source, while the volatile liquid enters the oxidation layer and reduction layer through the connecting element one to carry out oxidation-reduction reactions to obtain combustible gases such as methane and carbon monoxide.

[0031] [Beneficial Effects] Compared with the prior art, this disclosure provides a biomass gasification combustion boiler, which has at least the following beneficial effects: This biomass gasification combustion boiler, by adding a partition inside the furnace body, on the one hand, during the combustion of biomass, the residence time of the gasified gas carrying tar in the oxidation layer and reduction layer is extended to meet the operational requirements for thermal cracking of tar, which means that the overall height of the furnace body can be further reduced without affecting the tar cracking of the gasified gas. On the other hand, when the partition 1 forms a barrier state and the biomass is located on the partition 1, the heat of the oxidation layer and the reduction layer is transferred to the partition 1, and the partition 1 preheats the biomass. The preheated biomass undergoes thermal decomposition, so that the precursors of tar are decomposed in advance in the process before entering the combustion of the oxidation layer. The biomass located on the upper layer of the partition 1 is formed as charcoal with a high fixed carbon content after thermal decomposition, which is conducive to the subsequent oxidation-reduction reaction of the biomass. Furthermore, with the partition forming a barrier, the volatiles after thermal decomposition are directly introduced into the oxide layer through the connecting part for combustion and pyrolysis. Compared with the in-situ pyrolysis of tar on charcoal, the pyrolysis conversion rate is higher, which avoids carbon deposits and coking caused by incomplete combustion of tar from the root. In addition, when the connecting part and the fluid outlet are distributed on both sides of the furnace body, there is a sufficient pyrolysis path length for the tar in the furnace body, so that the fluid outlet can be set on the reduction layer. Compared with the downdraft gasification combustion boiler, the ash content and tar content of the gasified gas produced are relatively low. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a mainstream biomass gasification combustion boiler in the existing technology.

[0033] Figure 2 This is a schematic diagram of the overall structure of a biomass gasification combustion boiler disclosed herein.

[0034] Figure 3 This is a structural perspective view of a biomass gasification combustion boiler disclosed herein.

[0035] Figure 4 This is a schematic diagram of the layered distribution of a biomass gasification combustion boiler disclosed herein.

[0036] Figure 5 This is a schematic diagram of the structure of the partition and drive assembly of a biomass gasification combustion boiler disclosed herein.

[0037] Figure 6 This is a schematic diagram of the assembly state of the drive component in a biomass gasification combustion boiler according to a preferred embodiment of the present disclosure.

[0038] In the picture: 1. Furnace body; 2. Feed section; 3. Fluid outlet; 4. Connecting component 1; 5. Partition 1; 6. Drive assembly; 51. Support component; 52. Connecting component two; 53. Spacer component two; 61. Gear; 62. Rack; 63. Moving drive component. Detailed Implementation

[0039] To make the technical means, creative features, achieved purposes, and functional effects of this disclosure readily understandable, the disclosure will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0040] In the embodiments, the arrangement method mainly refers to the spatial arrangement, connection relationship and combination form of various components, parts and modules in the mechanism, device, equipment and system, while the operation method mainly refers to the working principle and movement form of the mechanism, device, equipment and system and its attached components, parts and modules to achieve their functions and purposes.

[0041] Example 1 To address the shortcomings of existing technologies: Arrangement method: like Figures 2-4 As shown, this embodiment provides a biomass gasification combustion boiler, including a furnace body 1. The furnace body 1 is provided with a fluid inlet and at least one fluid outlet 3. A partition 5 is provided inside the furnace body 1 to optionally divide the furnace body 1. At least one fluid outlet 3 is located on the furnace body 1 at the lower part of the partition 5. A connecting member 4 is provided on the furnace body 1 to connect the upper space of the partition 5 inside the furnace body 1 with the lower space of the partition 5.

[0042] As a non-limiting example, the process of producing gasified gas from biomass is as follows: biomass is dried and thermally decomposed in a combustion furnace. During the thermal decomposition process, biomass decomposes into volatiles and charcoal at high temperatures. The charcoal is then oxidized and burned to produce carbon dioxide. In the reduction layer, carbon dioxide and moisture are reduced by heat to combustible gases such as carbon monoxide and hydrogen. Among them, hydrogen and charcoal synthesize methane. This is a process mechanism for producing gasified gas from biomass that is well known and understood by those skilled in the art. A feeding section 2 is provided on the furnace body 1. The feeding section 2 is located at the upper end of the furnace body 1. In this embodiment, the fluid inlet can be provided at any part of the furnace body 1, and is intended to introduce air into the interior of the furnace body 1. In the air, the main component involved in the chemical reaction is oxygen. In this embodiment, the partition 5 can be of any structural state, such as a square plate or a circular plate as shown in the figure, which is intended to separate the furnace body 1. The optional separation of the furnace body 1 means that the partition 5 has at least two operating states in the furnace body 1, namely, separating the furnace body 1 and not separating the furnace body 1, and is not limited to the operating mechanism of the partition 5. For example, the partition 5 can be split between the partition 5. Connecting component 4 can be a pipe fitting, designed to connect the upper space of partition 5 inside furnace body 1 with the lower space of partition 5. Valves can be installed at the fluid inlet and fluid outlet 3 to control the flow of fluid.

[0043] Operation method: This embodiment is a biomass gasification combustion boiler. In the process of producing gasified gas from biomass, combustible materials such as biomass are placed inside the furnace body 1 for combustion. In this embodiment, the combustion of biomass is taken as an example. In the process of producing gas from biomass, biomass is fed into the furnace body 1 through the feed section 2. During the feeding process, the partition 5 inside the furnace body 1 should be in a non-obstructive state, that is, the biomass can be directly fed into the bottom of the furnace body 1 through the feed section 2. Figure 4 The oxide layer shown is positioned such that, during the pre-combustion process, the spacer 5 separates the furnace body 1, i.e., as... Figure 3 , 4 The structure shown indicates that biomass combustion occurs in this state, with all chemical reactions taking place in the oxidation and reduction layers. Specifically, after being separated by the partition 5, the residence time of the gases produced by biomass combustion in the oxidation layer is prolonged. The tar produced after thermal decomposition can undergo thermal cracking due to its relatively long residence time in the oxidation layer, resulting in a lower tar content in the produced gasified gas, unlike... Figure 1 In combustion environments such as the upward-suction gasification combustion furnace shown, the gas carrying tar flows directly upward and cannot undergo normal pyrolysis. The produced gasified gas flows out through the fluid outlet 3 located below the partition 5 for reuse or collection. When biomass needs to be added again, the partition 5 is made into a non-blocking state, allowing the biomass to enter the bottom of the furnace body 1. When the biomass is burned to produce gasified gas, the partition 5 is made to separate the furnace body 1 again.

[0044] It is worth mentioning that by adding a partition 5 inside the furnace body 1, the residence time of the gasified gas carrying tar in the oxidation layer and reduction layer is extended during the combustion of biomass, so as to meet the operational requirements for thermal cracking of tar. This means that the overall height of the furnace body 1 can be further reduced without affecting the tar cracking of the gasified gas.

[0045]

Example 2

[0046] As a non-limiting example, the use of partition 5 to preheat biomass while blocking the furnace body 1 means that partition 5 blocks the furnace body 1, but preheating biomass means that biomass cannot come into contact with the flame, that is, biomass cannot be located in the oxide layer, and biomass is located on partition 5 and in contact with partition 5.

[0047] Operation method: This embodiment is a biomass gasification combustion boiler, which differs from the first embodiment described above in that; In this embodiment, after the biomass is fed into the furnace body 1 through the feeding section 2, it is placed on the upper layer of the partition 5. Heat is transferred to the partition 5 through the oxidation layer and the reduction layer, and then transferred to the biomass located on the partition 5. Under sufficient temperature conditions, the biomass is thermally decomposed into volatiles and charcoal. Among them, tar, wood vinegar and other substances have relatively high density and are located at the bottom layer of the thermal decomposition layer, while gases with relatively low density, such as hydrogen and carbon monoxide, are located at the upper layer of the thermal decomposition layer. During this period, under the premise that the feed section 2 is in a closed operating state, air is introduced into the upper part of the partition 5. As the air is gradually introduced, the volatiles in the upper part of the partition 5 enter the oxidation layer through the connecting part 4 and come into contact with the flame to carry out an oxidation-reduction reaction to achieve the cracking of tar. The tar content of the gasified gas produced is reduced, and it flows out through the fluid outlet 3 located below the partition 5 for reuse or collection. Then, by making the partition 5 unobstructed, the partition 5 is opened, and the charcoal on the partition 5 falls into the oxide layer area and comes into contact with the flame to carry out an oxidation-reduction reaction.

[0048] It is worth mentioning that when the partition 5 forms a barrier and the biomass is located on the partition 5, the heat from the oxidation layer and the reduction layer is transferred to the partition 5, which preheats the biomass. The preheated biomass undergoes thermal decomposition, so that the precursors of tar are decomposed in advance during the combustion process in the oxidation layer. The biomass located on the upper layer of the partition 5 is formed as charcoal with a high fixed carbon content after thermal decomposition, which is beneficial to the subsequent oxidation-reduction reaction of the biomass. Furthermore, with the partition 5 acting as a barrier, the volatiles after thermal decomposition are directly introduced into the oxidation layer through the connecting part 4 for combustion and pyrolysis. Compared with the in-situ pyrolysis of tar on charcoal, the pyrolysis conversion rate is higher, which avoids carbon deposits and coking caused by incomplete combustion of tar from the root. In addition, when the connecting part 4 and the fluid outlet 3 are distributed on both sides of the furnace body 1, there is a sufficient pyrolysis path length for the tar in the furnace body 1, so that the fluid outlet 3 can be set on the reduction layer. Compared with the downdraft gasification combustion boiler, the ash content and tar content of the gasified gas produced are relatively low.

[0049]

Example 3

[0050] As a non-limiting example, a plate-like structure with a cavity refers to a partition 5 that allows fluid to pass through the cavity. The cavity can be of any shape, preferably an "S"-shaped flow channel, which is an optional arrangement that those skilled in the art would make for actual implementation. The gas supply device refers to a gas supply device such as an air pump, which is designed to accelerate gas flow. Depending on the implementation situation, heat insulation measures can be set between the gas supply device and the partition 5, such as using pipes of different materials to connect layer by layer to form a heat conduction barrier. In fact, the gas supply device supplies gas to the interior of the furnace body 1 in one direction, and theoretically, the heat inside the furnace body 1 will not be transferred to the gas supply device in large quantities.

[0051] Operation method: This embodiment is a biomass gasification combustion boiler. Through the partition 5, in this embodiment, air is introduced through the air inlet on the partition 5 via an external air supply device. During this process, the heat of the oxide layer is transferred to the partition 5. The supplied air absorbs heat inside the partition 5 and then returns to the upper layer of the partition 5 to fully preheat the biomass.

[0052] It is worth mentioning that by using the partition 5 as a conductive medium, the pumping of external air must pass through the partition 5 and come into full contact with the partition 5 carrying high heat, so that the air introduced carries high heat to meet the operational requirements of fully preheating biomass.

[0053] As a preferred arrangement, at least two fluid outlets 3 are provided. In addition to the fluid outlet 3 located on the lower part of the partition 5 on the furnace body 1, at least one fluid outlet 3 is located on the upper part of the partition 5 on the furnace body 1.

[0054] It is worth mentioning that when there are at least two fluid outlets 3 distributed in the upper and lower layers of partition 5, any one of the fluid outlets 3 can be put into use. This means that when the fluid outlet 3 located in the lower layer of partition 5 is used as a gasification gas outlet, it is similar to the effect of a downdraft gasification combustion boiler. When the fluid outlet 3 located in the upper layer of partition 5 is used as a gasification gas outlet, it is similar to the effect of an updraft gasification combustion boiler. In the state where partition 5 separates the furnace body 1, and during the process of biomass thermal decomposition in the upper layer of partition 5, those skilled in the art can understand that by utilizing the density difference between tar, wood vinegar (volatile liquid) and hydrogen, carbon monoxide (volatile gas) in the volatiles, the volatile gas after thermal decomposition of biomass can be directly discharged through the upper fluid outlet 3 for use. Since the volatile gas itself is combustible and can be used as an energy source, while the volatile liquid enters the oxidation layer and reduction layer through the connecting member 4 to carry out oxidation-reduction reactions to obtain combustible gases such as methane and carbon monoxide.

[0055]

Example 4

[0056] As a non-limiting example, the fact that partition 5 can rotate at a fixed point inside the furnace body 1 means that partition 5 and furnace body 1 are rotatably connected. In actual implementation, a hole can be opened in the furnace body 1, and a rotating shaft that fits the hole structure can be provided on partition 5. Partition 5 rotates through the hole and is connected to the furnace body 1. Since the flow of gasified gas inside the furnace body 1 is under the premise that the fluid outlet 3 is equipped with a negative pressure suction device, it means that although a hole is opened in the furnace body 1, the gas inside the furnace body 1 will not escape in large quantities from the hole. Therefore, using the method of drilling a hole in the furnace body 1 to provide the rotating part of partition 5 is a reasonable arrangement that is acceptable under actual working conditions. The drive assembly 6 for controlling the rotation of partition 5 refers to a drive assembly 6 designed to control the rotation of partition 5. It can be a rotation drive assembly such as a motor or a motor + reducer connected to partition 5, or it can be implemented through other control mechanisms that can rotate partition 5. It is designed to control the rotation of partition 5. In this embodiment, it is not limited to using any specific rotation drive mechanism. Under the premise that the spacer 5 is arranged as a rotation control mechanism, such as Figure 5 In the structural state shown, in order to prevent the lower gas of the partition 1 5 in the barrier state from escaping upward through the space between partition 1 5, a partition 2 53 is provided between partition 1 5 and between partition 1 5 and furnace body 1. The partition 2 53 plays a basic barrier role. A connecting member 2 52 is provided between the air outlet of the partition 1 5 and the furnace body 1. The connecting member 2 52 can be a metal pipe.

[0057] As a preferred arrangement: The air inlet and air outlet on the partition 5 are concentrically arranged, and a support 51 is provided at the position of the air inlet and air outlet, and the support 51 is connected to the drive assembly 6.

[0058] As a non-limiting example, the concentric arrangement of the air inlet and outlet on partition 5 means that the air inlet and outlet can be arranged on the same straight line, such as... Figure 5As shown in the coaxial arrangement, the support portion 51 on the partition 5 can serve as an air inlet and an air outlet. This means that the partition 5 can be connected to an external air supply device by rotational connection, without having to consider that when the air inlet and air outlet are located on the non-rotating parts of the partition 5, they will move synchronously during the rotation of the partition 5. This means that the connecting pipes on it need to move synchronously.

[0059] Operation method: This embodiment is a biomass gasification combustion boiler. Through the partition 5, in this embodiment, the partition 5 is mainly connected to the furnace body 1 in a fixed and rotatable manner. In this state, it means that the switching of whether the partition 5 is blocked or not is achieved by controlling the rotation of the partition 5.

[0060] As a preferred arrangement: The partition 5 and the adjacent partition 5 are inclined in the state of separating the furnace body 1, and the connecting piece 4 is provided on the side of the furnace body 1 that is not provided with the fluid outlet 3.

[0061] As a non-limiting example, when partition 5 is configured to separate the furnace body 1, partition 5 is in contact with partition 5, and the upper space of partition 5 in the furnace body 1 and the lower space of partition 5 in the furnace body 1 are not connected to each other. In this state, partition 5 is tilted.

[0062] It is worth mentioning that, such as Figure 3 , 4 As shown in the structural configuration, in the lower space of partition 5 within the furnace body 1, volatiles from the upper space of partition 5 enter the lower space of partition 5 through connecting member 4. The volatiles and other gases mainly flow upwards, passing through... Figure 3 , 4 The "wave-shaped" top partition shown is designed to further extend the residence time of the gas in the oxide and reduction layers.

[0063] As a preferred arrangement: Given the presence of connecting component 2 52, the arrangement of the air outlet end of connecting component 2 52 connected to the furnace body 1 is based on the following: Figure 4 In the structural state shown, when the partition 5 separates the furnace body 1, that is, when the partition 5 is in contact with the partition 5, the partition 5 forms an "inverted triangle" area. The gas outlet on the connecting piece 2 52 is directly below the "inverted triangle" area. With this arrangement, when the biomass falls to the upper layer of the partition 5, that is, when the biomass is located in the "inverted triangle", the gas carrying high heat can fully contact the biomass from bottom to top, thereby improving the thermal decomposition efficiency of the biomass.

[0064] The partition 5, controlled by rotation, is in a split configuration, such as... Figure 5 The structure shown requires separate rotation control, meaning that the rotation directions of spacer 5 and its adjacent spacer 5 are different. Therefore, the preferred arrangement is as follows: Specifically, such as Figure 5 , 6 As shown, a drive assembly 6 for a biomass gasification combustion boiler includes a gear 61 fixedly connected to a fixed rotating part on a partition 5, and a rack 62 meshing with the gear 61. The racks 62 on adjacent partitions 5 are symmetrically distributed based on their corresponding gears 61, and multiple sets of racks 62 are fixedly connected to each other.

[0065] As a non-limiting example, the racks 62 on adjacent spacers 5 are symmetrically distributed based on their corresponding gears 61, meaning that they are arranged as follows: Figure 5 The symmetrical state shown, taking the same gear 61 as an example, when the rack 62 is located on the upper side of the gear 61, moving the rack 62 to the left will cause the gear 61 to rotate counterclockwise, while when the rack 62 is located on the lower side of the gear 61, moving the rack 62 to the left will cause the rack 62 to rotate clockwise. In this embodiment, the movement control of the rack 62 can be achieved by a gear meshing on one of the racks 62, rotating the gear to drive the entire rack assembly to move, or by providing any type of moving drive 63, such as a hydraulic cylinder, pneumatic cylinder, or electric push rod, which is well known and understood by those skilled in the art, to drive the rack 62 to move. The selection of the moving drive 63 is an optional arrangement made by those skilled in the art based on the actual implementation situation. In this embodiment, the aim is to achieve movement control of the rack 62.

[0066] Operation method: This embodiment is a biomass gasification combustion boiler. Through the set drive component 6, if it is necessary to control the rotation of the partition 5, it is also necessary to control the rotation of adjacent partitions 5 in opposite directions. By moving two sets of racks 62 distributed vertically in a single direction at the same time, during the movement of the racks 62, because the two sets of racks 62 are based on the different distribution positions of their corresponding gears 61, but the movement direction of the racks 62 is the same, the two sets of racks 62 drive their corresponding gears 61 to rotate clockwise and counterclockwise during the movement.

[0067] It is worth mentioning that the arrangement of the gear 61 and rack 62 simplifies the control mechanism for the different directions of multiple spacers 5. That is, the different directions of multiple spacers 5 can be controlled by controlling the movement of the rack 62. Compared with other types of rotation drive mechanisms, the gear and rack can operate under heavy loads and is not affected by the harshness of the operating environment.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A biomass gasification combustion boiler, comprising a furnace body (1), wherein a fluid inlet and at least one fluid outlet (3) are provided on the furnace body (1), characterized in that: A partition (5) is provided inside the furnace body (1) for optionally dividing the furnace body (1). At least one fluid outlet (3) is located on the furnace body (1) at the lower part of the partition (5). A connecting member (4) is provided on the furnace body (1) to connect the upper space of the partition (5) inside the furnace body (1) with the lower space of the partition (5).

2. The biomass gasification combustion boiler according to claim 1, characterized in that: The partition (5) is used to preheat biomass while blocking the furnace body (1).

3. A biomass gasification combustion boiler according to claim 2, characterized in that: The partition 1 (5) is a plate-shaped structure with a cavity, and the partition 1 (5) is provided with an air inlet and an air outlet. The air inlet is connected to an external air supply device, and the air outlet is connected to the upper part of the furnace body (1) above the partition 1 (5). The air outlet serves as the fluid inlet.

4. A biomass gasification combustion boiler according to claim 3, characterized in that: The partition (5) can rotate at a fixed point inside the furnace body (1), and a drive assembly (6) for controlling the rotation of the partition (5) is provided at the fixed point rotation part of the partition (5).

5. A biomass gasification combustion boiler according to claim 4, characterized in that: The air inlet and air outlet on the partition (5) are concentrically arranged, and a support (51) is provided at the position of the air inlet and the air outlet, and the support (51) is connected to the drive assembly (6).

6. A biomass gasification combustion boiler according to claim 4, characterized in that: The partition 1 (5) and the adjacent partition 1 (5) are in an inclined state in order to separate the furnace body (1), and the connecting member 1 (4) is provided on the side of the furnace body (1) that is not provided with a fluid outlet (3).

7. A biomass gasification combustion boiler according to any one of claims 4 to 6, characterized in that: The drive assembly (6) includes a gear (61) fixedly connected to a fixed rotating part on the first partition (5), and a rack (62) meshes with the gear (61). The racks (62) on adjacent first partitions (5) are symmetrically distributed based on their corresponding gears (61), and multiple sets of racks (62) are fixedly connected to each other.

8. A biomass gasification combustion boiler according to any one of claims 2 to 6, characterized in that: The fluid outlet (3) is provided in at least two parts. In addition to the fluid outlet (3) provided on the furnace body (1) at the lower part of the partition (5), at least one fluid outlet (3) is provided on the furnace body (1) at the upper part of the partition (5).

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