Reagent organization apparatus and methods

Abstract

The application provides a reactant organization device and method, which comprises a fuel organization unit and a first oxidant organization unit. The fuel organization unit comprises a main body section and a fuel channel penetrating through the main body section, the inlet of the fuel channel is communicated with the outlet of a thermal modification furnace, the outlet of the fuel channel is communicated with the inlet of a gasification melting furnace, and the outlet end of the main body section is directly connected with the inlet of the gasification melting furnace. The first oxidant organization unit comprises at least one first oxidant nozzle, the at least one first oxidant nozzle is embedded in the main body section, and the outlet of the first oxidant nozzle is communicated with the fuel channel.

Description

Technical Field

[0001] This invention belongs to the field of high-temperature melting combustion and gasification technology, and particularly relates to a reactant organization device and method. Background Technology

[0002] Fuel organization is crucial for combustion and gasification reactions, and existing burners are typical fuel reaction organization devices. Taking a gasifier as an example, the burner in a fluidized bed gasifier is a compact, integrated device, primarily with a multi-channel structure, generally divided into a central oxygen agent channel, a fuel channel, and an outer annular oxygen channel. The reaction temperature inside a fluidized bed gasifier is high (~1300℃), exceeding the ash melting point. The high-temperature reaction zone occurs near the burner head, leading to easy erosion and damage to the burner head over prolonged operation. In gasification production, burner erosion necessitates shutdown for repair and replacement, disrupting normal production and causing economic losses. Furthermore, the oxidant settings typically employ coaxial jet and cross-jet methods, which can easily result in poor organization during gasification. Currently, due to the stringent requirements for organizational strength in fluidized bed gasification reactions and limitations imposed by the pressurized operation of fluidized bed gasifiers, research and innovation in gasification burners remain largely confined to multi-channel design concepts, generally only extending the time before erosion occurs through material improvements. Therefore, it is urgent to provide a stable and reliable fuel organization structure. Summary of the Invention

[0003] In view of this, the present invention provides a reactant organization apparatus and method to at least partially solve the above-mentioned technical problems.

[0004] Coal is an important energy source in my country, and it is mainly utilized through two methods: combustion and gasification.

[0005] Most current methods for enhancing gasification reactions involve using high temperature and high pressure to shift the equilibrium of the gasification reaction towards the product side. However, this approach limits the design of the gasifier and restricts the structure of the gasification device (burner) to a multi-channel design. Furthermore, burners with multi-channel structures are prone to burning and damage at the burner head during prolonged gasification operation, affecting normal production.

[0006] Unlike this approach, fluidized bed combustion / gasification combines high-temperature thermal modification of coal with gasification / combustion to achieve staged control of the coal gasification / combustion reaction process, thereby increasing the intensity of the gasification / combustion reaction and realizing efficient and low-carbon utilization of coal. Simultaneously, because the high-temperature thermal modification process has the effect of activating and modifying the fuel, it can promote the combustion / gasification reaction of ultra-low volatile fuels such as gasified fine ash and coal gangue, thus improving the efficiency of coal utilization. However, in the fluidized bed combustion / gasification process, the high-temperature gas-solid composite fuel (including semi-coke and coal gas) generated in the thermal modification unit needs to enter the combustion / gasification unit together with the oxidant through the burner. The high temperature of the fuel creates a high-temperature zone upon contact with the gasifying agent, intensifying the reaction. Moreover, for the fluidized bed combustion / gasification process, the temperature of the high-temperature gas-solid composite fuel is approximately 900℃. To ensure a fuel velocity of around 20 m / s, the diameter of the burner fuel channel is typically 3-5 times larger than that of a conventional room-temperature fuel burner. In this way, the momentum of the outer ring oxygen cannot fully penetrate the hot fuel, resulting in poor reaction organization. Currently, there is still no feasible technical solution for reaction organization devices using large-volume hot fuels; therefore, innovation is needed in the organization methods of oxygen and fuel.

[0007] Based on this, the present invention provides a reactant organization device, including a combustion organization unit and a first oxidant organization unit.

[0008] The fuel organization unit includes a main section and a fuel passage that runs through the main section. The inlet of the fuel passage is connected to the outlet of the thermal modification furnace, and the outlet of the fuel passage is connected to the inlet of the gasification and melting furnace. The outlet end of the main section is directly connected to the inlet of the gasification and melting furnace.

[0009] The first oxidizer unit includes at least one first oxidizer nozzle, which is embedded in the main body section and the outlet of the first oxidizer nozzle is connected to the fuel passage.

[0010] According to an embodiment of the present invention, the above-described apparatus further includes:

[0011] The second oxidant organization unit includes at least one second oxidant nozzle, which is disposed within the fuel passage, and the central axis of the second oxidant nozzle is parallel to the central axis of the fuel passage.

[0012] According to an embodiment of the present invention, the outer surface of the second oxidant nozzle is provided with a wear-resistant layer.

[0013] According to an embodiment of the present invention, wherein,

[0014] At least one primary oxidizer nozzle is divided into multiple zone nozzle groups;

[0015] In the same zone of nozzle group, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is the same;

[0016] In different nozzle groups, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is different.

[0017] According to an embodiment of the present invention, wherein,

[0018] At least one first oxidizer nozzle is evenly distributed around the fuel passage.

[0019] According to an embodiment of the present invention, wherein,

[0020] The horizontal angle α between the central axis of the first oxidizer nozzle and the preset cross-section is in the range of 25°-75°, where the preset cross-section is perpendicular to the central axis of the fuel passage.

[0021] According to an embodiment of the present invention, wherein,

[0022] The central axis of the first oxidizer nozzle intersects with the central axis of the fuel passage;

[0023] At least one first oxidizer nozzle is divided into a first counter-current nozzle group and a second counter-current nozzle group. In the first counter-current nozzle group and the second counter-current nozzle group, the central axis of the first oxidizer nozzle coincides.

[0024] According to an embodiment of the present invention, wherein,

[0025] The central axis of the first oxidizer nozzle does not intersect with the central axis of the fuel passage;

[0026] The angle β between the central axis of the first oxidant nozzle and the preset longitudinal section is in the range of 40°-75°, where the preset longitudinal section passes through both the central axis of the fuel passage and the outlet end of the first oxidant nozzle.

[0027] According to an embodiment of the present invention, wherein,

[0028] The main body section is made of one of the following materials:

[0029] According to an embodiment of the present invention, a water cooling sleeve is provided outside the first oxidant nozzle.

[0030] Another aspect of the present invention provides a method for organizing reactants, including...

[0031] Gas-solid composite fuel and first oxidant are fed into the gasification melting furnace using a fuel organization unit and a first oxidant organization unit, so that the gas-solid composite fuel and first oxidant can undergo a predetermined gasification reaction in the gasification melting furnace. The gas-solid composite fuel is the product of thermally modifying the original fuel in a thermal modification furnace.

[0032] The first oxidant organization unit is used to feed gas-solid composite fuel into the gasification melting furnace. The fuel organization unit includes a main section and a fuel channel that runs through the main section. The inlet of the fuel channel is connected to the outlet of the thermal modification furnace, and the outlet of the fuel channel is connected to the inlet of the gasification melting furnace. The outlet end of the main section is directly connected to the inlet of the gasification melting furnace.

[0033] The first oxidant organization unit is used to feed the first oxidant into the gasification melting furnace. The first oxidant organization unit includes at least one first oxidant nozzle, which is embedded in the main body section and the outlet of the first oxidant nozzle is connected to the fuel passage.

[0034] According to an embodiment of the present invention, the above method further includes:

[0035] A second oxidant is fed into a gasification melting furnace using a second oxidant organization unit. The second oxidant organization unit includes at least one second oxidant nozzle, which is disposed within a fuel passage, and the central axis of the second oxidant nozzle is parallel to the central axis of the fuel passage.

[0036] According to an embodiment of the present invention, at least one first oxidizer nozzle is divided into multiple partitioned nozzle groups, and the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is different in different partitioned nozzle groups;

[0037] The process of feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes:

[0038] The first oxidant is fed into different locations in the gasification and melting furnace using multiple zone nozzle groups, so as to form multiple different combustion zones in the gasification and melting furnace.

[0039] According to an embodiment of the present invention, the central axis of the first oxidizer nozzle intersects the central axis of the fuel passage, and at least one first oxidizer nozzle is divided into a first counter-current nozzle group and a second counter-current nozzle group, wherein the central axes of the first oxidizer nozzles in the first counter-current nozzle group and the second counter-current nozzle group coincide.

[0040] The process of feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes:

[0041] The first oxidant is fed into the gasification and melting furnace in the form of a counter-current jet using the first and second counter-current nozzle groups.

[0042] According to an embodiment of the present invention, the central axis of the first oxidant nozzle does not intersect with the central axis of the fuel passage, and the numerical range of the angle β between the central axis of the first oxidant nozzle and the preset longitudinal section is 40°-75°, wherein the preset longitudinal section passes through both the central axis of the fuel passage and the outlet end of the first oxidant nozzle.

[0043] The process of feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes:

[0044] The first oxidant is fed into the gasification and melting furnace in the form of a swirling jet using a first oxidant nozzle.

[0045] Based on the above technical solution, the reactant organization device and method provided by the present invention have at least one of the following beneficial effects:

[0046] (1) According to an embodiment of the present invention, a split structure is adopted to transport fuel and oxidant separately. The fuel channel runs through the main body section of the reactant organization device, and the inlet of the fuel channel is connected to the outlet of the thermal modification furnace, while the outlet of the fuel channel is connected to the inlet of the gasification melting furnace. This can effectively avoid the erosion and damage problems of traditional multi-channel composite burners. It can also directly introduce gas-solid composite fuel into the interior of the fuel channel to obtain an independent fuel organization unit for transporting gas-solid composite fuel. A first oxidant organization unit is set in the reactant organization device. At least one first oxidant nozzle is buried in the main body section, and the outlet of the first oxidant nozzle is connected to the fuel channel. This allows the oxidant transported in the first oxidant nozzle to react directly with the fuel in the fuel channel in the gasifier. In addition, the first oxidant organization units in the present invention are independent of each other. When one of them is damaged, the other first oxidant organization units can continue to operate without affecting the overall operation. When replacing or repairing, the gasifier only needs to be stopped briefly to quickly and easily replace the first oxidant nozzle, avoiding long-term shutdown that affects normal production.

[0047] (2) According to an embodiment of the present invention, since the first oxidant nozzles are independent of each other, the angle, flow rate, and airflow organization of each nozzle can be controlled independently, thereby obtaining different oxidant delivery methods and enhancing the gasification organization effect. Since the first oxidant nozzles are independent of each other, by setting the depth of each nozzle into the fuel channel, the oxidant can react with the gas-solid composite fuel at different positions in the fuel channel, improving the mixing effect of the oxidant and fuel, thereby improving the reaction efficiency in the gasifier. Attached Figure Description

[0048] Figure 1 This is a structural diagram of a reactant organization device according to an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of a fuel channel structure of a reactant organization device in one embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of another fuel channel structure of the reactant organization device in one embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of another first oxidant nozzle arrangement of the reactant organization device in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the arrangement of a first oxidant nozzle in the reactant organization device of this invention.

[0053] [Explanation of Labels in the Attached Image]

[0054] 1-First oxidizer nozzle, 11-First oxidizer nozzle No. 1, 12-First oxidizer nozzle No. 2, 13-First oxidizer nozzle No. 3, 14-First oxidizer nozzle No. 4, 2-Main body section, 3-Fuel passage, 4-Second oxidizer nozzle, 5-Second oxidizer passage wear-resistant layer;

[0055] A - Gas-solid composite fuel, B - Secondary oxidant, C - Primary oxidant, D - Cooling water. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0057] Because the reaction temperature inside the gasifier is high (~1300℃), typically exceeding the ash melting point, traditional composite burners are multi-channel structures consisting of a fuel channel, an outer ring oxidizer nozzle, and a central oxidizer nozzle. This structure is complex, and the burners are large, leading to high costs for installation, replacement, and maintenance. Furthermore, due to the high reaction temperature within the fuel reaction apparatus, burner head wear and burning are common after prolonged operation, affecting burner lifespan. Moreover, replacing or repairing any component requires shutting down the gasifier for inspection and replacement, resulting in high costs, long processing times, and disruption to normal production. Additionally, the burners in the fuel reaction apparatus are primarily coaxial, with oxidizer arrangements limited to coaxial and cross-jet patterns, resulting in poor mixing and hindering reaction organization.

[0058] Therefore, the present invention provides a reactant organization device, comprising: a fuel organization unit and a first oxidant organization unit.

[0059] The fuel organization unit includes a main section and a fuel passage running through the main section. The inlet of the fuel passage is connected to the outlet of the thermal modification furnace, and the outlet of the fuel passage is connected to the inlet of the gasification and melting furnace. The outlet end of the main section is directly connected to the inlet of the gasification and melting furnace.

[0060] The first oxidizer unit includes at least one first oxidizer nozzle, which is embedded in the main body section and the outlet of the first oxidizer nozzle is connected to the fuel passage.

[0061] Figure 1 This is a structural diagram of a reactant organization device according to an embodiment of the present invention.

[0062] The following combination Figure 1 The reactant organization apparatus of the present invention will be described in the following embodiments.

[0063] like Figure 1 As shown, the fuel organization unit includes a main body section 2 and a fuel channel 3 that runs through the main body section 2. The main body section 2 can be a cylindrical structure formed by casting with high temperature and wear resistant casting material. The main body section 2 encloses the fuel channel 3. The cross-section of the fuel channel 3 formed by the main body section 2 can be of various shapes, such as, but not limited to, circles, squares, triangles, polygons, petals, irregular shapes, etc.

[0064] The inlet of fuel channel 3 is connected to the outlet of the thermal modification furnace, allowing the product of thermal modification of the original fuel in the thermal modification furnace, namely gas-solid composite fuel, to be directly introduced into the combustion channel. The outlet of fuel channel 3 is connected to the inlet of the gasification melting furnace, and the outlet end of the main body section 2 is directly connected to the inlet of the gasification melting furnace. This allows the gas-solid composite fuel to be directly transported into the gasification melting furnace via the fuel channel. Because the outlet end of the main body section 2 is directly connected to the inlet of the gasification melting furnace, there is no head structure in traditional multi-channel burners that needs to withstand high-temperature combustion. The high-temperature combustion process occurs within the channel and the gasification melting furnace, avoiding the burn-out problem of traditional multi-channel composite burner heads.

[0065] The first oxidant organization unit includes at least one oxidant nozzle 1. A water-cooling jacket is also provided around the outer ring of the first oxidant nozzle 1. The first oxidant nozzle serves as the first oxidant C channel, and the water-cooling jacket serves as the cooling water D channel. The cooling water can reduce the temperature of the first oxidant nozzle wall, preventing the first oxidant nozzle 1 from burning out, reducing the high-temperature resistance grade of the first oxidant nozzle 1 material, and broadening the range of material selection, not limited to high-temperature resistant materials. Mounting holes for installing the first oxidant organization unit are pre-drilled on the outer surface of the main body section 2. The first oxidant nozzle 1 is embedded in the main body section 2 and connected by a metal outer flange, resulting in a first oxidant organization unit independent of the fuel channel 3, making the first oxidant organization unit easy to disassemble and install. The outlet of the first oxidant nozzle 1 is connected to the fuel channel 3, allowing the first oxidant to react directly with the gas-solid composite fuel. The outlet of the first oxidant nozzle 1 can extend to any position in the fuel channel. There can be one or more first oxidant nozzles 1, independent of the fuel channel, resulting in a separate fuel channel and oxidant unit.

[0066] In embodiments of the present invention, a split structure is used to separately transport fuel and oxidant. The fuel channel runs through the main body section, and its outlet is connected to the inlet of the gasification furnace, enabling direct transport of the gas-solid composite fuel into the gasifier. The first oxidant organization unit includes at least one first oxidant nozzle, which is embedded within the main body section, with its outlet connected to the fuel channel. This effectively avoids the burn-out problem of traditional multi-channel composite burners. It also allows the gas-solid composite fuel to be directly introduced into the fuel channel, creating an independent fuel organization unit for transporting the gas-solid composite fuel. Embedding at least one first oxidant nozzle within the main body section and connecting its outlet to the fuel channel allows the oxidant transported within the first oxidant nozzle to react directly with the fuel in the fuel channel within the gasifier. Furthermore, the first oxidant units are independent of each other. If one unit fails, the others can continue operating without affecting the overall operation. Only a brief shutdown of the gasifier is needed to quickly and easily replace the first oxidant unit, avoiding prolonged downtime. In addition, because the first oxidant units are independent, the angle and flow rate of each first oxidant nozzle can be independently controlled, allowing for different oxidant delivery methods and enhancing the gasification effect.

[0067] According to an embodiment of the present invention, the reactant organization device further includes a second oxidant organization unit. The second oxidant organization unit includes at least one second oxidant nozzle disposed within a fuel passage, and the central axis of the second oxidant nozzle is parallel to the central axis of the fuel passage.

[0068] Specifically, such as Figure 1 As shown, the second oxidant nozzle 4 is disposed within the fuel channel 3, and the central axis of the second oxidant nozzle 4 is parallel to the central axis of the fuel channel 3. It is used to introduce the second oxidant B into the gasifier to react with the gas-solid composite fuel A and the first oxidant C. A wear-resistant layer 5 is also provided on the outer surface of the second oxidant nozzle, and it is connected to the second oxidant nozzle 4 by a flange, making the second oxidant nozzle 4 easy to disassemble and install. This wear-resistant layer 5 effectively reduces the erosion of the second oxidant nozzle 5 by particulate matter in the gas-solid composite fuel A within the fuel channel 3, reducing damage to the second oxidant nozzle 5. The wear-resistant layer material on the outer surface of the second oxidant nozzle can be ceramic.

[0069] The first oxidant nozzle 1 and the second oxidant nozzle 4 can be used to deliver the same oxidant, for example, both can be used to deliver oxygen. Alternatively, the first oxidant nozzle 1 and the second oxidant nozzle 4 can be used to deliver different oxidants; for example, the first oxidant nozzle 1 can be used to deliver pure oxygen, and the second oxidant nozzle 4 can be used to deliver air, oxygen-containing gas, etc. By independently setting the first oxidant nozzle 1 and the second oxidant nozzle 4, different oxidants can be delivered, and oxidants with different flow rates can be delivered separately. This allows for flexible adjustment according to the requirements of the combustion conditions, making the reactant organization device more applicable and facilitating better achievement of the predetermined combustion and gasification effects.

[0070] In an embodiment of the present invention, adding a second oxidant organization unit in the fuel channel can further increase the mixing of the oxidant and the gas-solid composite fuel, thereby improving the effect of reactant organization.

[0071] Figure 2 This is a schematic diagram of a fuel channel structure of a reactant organization device in one embodiment of the present invention.

[0072] According to embodiments of the present invention, such as Figure 2 As shown, the fuel channel has a conventional circular structure. At least one first oxidizer nozzle 1 is evenly distributed around the fuel channel 3 outside the fuel channel. The number of first oxidizer nozzles 1 is not limited and can be odd or even. Within the same nozzle group, the distance between the outlet end of the first oxidizer nozzle 1 and the central axis of the fuel channel 3 is the same, and the central axis of the first oxidizer nozzle 1 intersects with the central axis of the fuel channel 3. That is, the contact distance and reaction effect between the first oxidizer C ejected from the first oxidizer nozzle 1 and the gas-solid composite fuel A are consistent within the same zone. Combined with... Figure 1 As can be seen, the first oxidizer nozzle 1 is arranged obliquely downward in the main body section 2. The horizontal angle α between the center line of the first oxidizer nozzle and the preset cross section is 25-75°. The preset cross section is a section perpendicular to the central axis of the fuel channel.

[0073] In embodiments of the present invention, by uniformly arranging at least one first oxidant nozzle 1 around the periphery of the circular fuel channel, the first oxidant C sprayed from the first oxidant nozzle 1 can be made into uniform contact with the gas-solid composite fuel A. The inclined design of the first oxidant nozzle effectively reduces the scouring of the fuel channel by the first oxidant sprayed from the first oxidant nozzle, reducing wear on the fuel channel, while preventing the first oxidant from flowing upwards and affecting the mixing effect between the oxidant and fuel, thus reducing its reaction efficiency in the gasifier.

[0074] Besides being circular, fuel passages can also have other structures such as rhombuses or petals; these will not be further limited here. Below, we will illustrate this with an example of a petal-shaped fuel passage.

[0075] Figure 3 This is a schematic diagram of another fuel channel structure of the reactant organization device in one embodiment of the present invention.

[0076] According to embodiments of the present invention, such as Figure 3 As shown, the fuel channel 3 has a petal-shaped structure. The distance between the boundary of the fuel channel 3 and the center line of the fuel channel 3 varies, and the diameter of the protruding part is 2-3 times the diameter of the concave part. At least one first oxidizer nozzle 1 exists outside the fuel channel 3. The central axis of the first oxidizer nozzle 1 intersects the central axis of the fuel channel 3 and is evenly distributed around the fuel channel 3. The number of first oxidizer nozzles 1 installed can be odd or even, without specific restrictions, and can be flexibly designed according to the operating conditions.

[0077] Because the fuel passage 3 has a petal-shaped structure, at least one first oxidizer nozzle 1 is divided into multiple zone nozzle groups. Within the same zone nozzle group, the distance between the outlet end of the first oxidizer nozzle 1 and the central axis of the fuel passage 3 is the same. In different zone nozzle groups, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is different. For example, the first oxidizer nozzle 1 extending to the protruding portion can be divided into a first zone nozzle group, and the first oxidizer nozzle 1 extending into the concave portion can be divided into a second zone nozzle group, thereby controlling the depth of at least one first oxidizer nozzle entering the fuel passage 3 to be different. Within the same zone nozzle group (e.g., all are protruding or concave portions), the distance between the outlet end of the first oxidizer nozzle 1 and the central axis of the fuel passage 3 is the same; in different zone nozzle groups (e.g., the area between the protruding and concave portions), the distance between the outlet end of the first oxidizer nozzle 1 and the central axis of the fuel passage 3 is different, thus establishing different combustion zones. For example, the outlet end of the first zone nozzle group forms the first combustion zone, and the outlet end of the second zone nozzle group forms the second combustion zone. The establishment of multiple combustion zones can enhance combustion, achieve uniform combustion, and improve the efficiency of the gasification reaction. In addition, it can allow the oxidant sprayed from the first oxidant nozzle 1 to come into contact with the gas-solid composite fuel at different positions in the fuel channel 3, which is beneficial to the mixing of the first oxidant C and the gas-solid composite fuel A, and improves the efficiency of the reaction.

[0078] In embodiments of the present invention, by employing petal-shaped or other shaped fuel channels, the first oxidant reacts with gas-solid composite fuel at different locations within the fuel channel, thereby improving the mixing effect of the oxidant and fuel and increasing their reaction efficiency in the gasifier.

[0079] According to embodiments of the present invention, in addition to enhancing the mixing effect between the oxidant and the gas-solid composite fuel and improving the gasification reaction efficiency through the above-described structural layout, it can also be achieved in other ways, such as changing the injection angle and method of the first oxidant nozzle. Figure 4 This is a schematic diagram of another first oxidant nozzle arrangement of the reactant organization device in an embodiment of the present invention.

[0080] According to embodiments of the present invention, the reactant organization apparatus of the present invention can spray the oxidant in the form of a counter-jet stream using a first oxidant nozzle. To spray the oxidant in the form of a counter-jet stream using the first oxidant nozzle, the following can be employed: Figure 4 The structure shown is as follows.

[0081] like Figure 4As shown, at least one first oxidizer nozzle 1 is evenly distributed around the fuel passage 3, and the central axis of the first oxidizer nozzle 1 intersects the central axis of the fuel passage 3. There is an even number of first oxidizer nozzles 1, divided into a first counter-current nozzle group and a second counter-current nozzle group. The central axes of the first oxidizer nozzles in the first and second counter-current nozzle groups coincide to achieve counter-current jets. Figure 4 As shown, at least one first oxidizer nozzle 1 includes nozzle 11, nozzle 2, nozzle 3, and nozzle 4. Among them, nozzle 11 and nozzle 3 form a first counter-current nozzle group, nozzle 2 and nozzle 4 form a second counter-current nozzle group, and the central axes of nozzle 11 and nozzle 3, and nozzle 2 and nozzle 4 coincide, forming a counter-current jet.

[0082] After the first oxidant C1 is ejected from the outlet of nozzle 11, it forms an opposing jet with the jet stream of the first oxidant C3 ejected from the outlet of nozzle 13 on the opposite side. Similarly, the first oxidants C2 and C4 form opposing jet streams, thus creating multiple opposing jet streams within the fuel passage 3. For example, first oxidants C1 and C2 can form a first opposing nozzle group, and first oxidants C3 and C4 can form a second opposing nozzle group, creating different types of opposing jets. It should be noted that the number of first oxidant nozzles is not limited to four and can be flexibly set according to reaction requirements.

[0083] In an embodiment of the present invention, at least one first oxidant nozzle is configured as a first counter-current nozzle group and a second counter-current nozzle group. This structural design enables the first oxidant C to form multiple counter-current streams within the fuel channel 3, which is beneficial for the mixing of the first oxidant C and the gas-solid composite fuel A, thereby improving the reaction efficiency.

[0084] According to embodiments of the present invention, the reactant organization apparatus of the present invention allows the oxidant to be ejected in the form of a counter-swirling jet using a first oxidant nozzle. To eject the oxidant in a counter-swirling manner using the first oxidant nozzle, methods such as... Figure 5 The structure shown is as follows.

[0085] Figure 5 This is a schematic diagram of the arrangement of a first oxidant nozzle in the reactant organization device of this invention.

[0086] like Figure 5As shown, the central axis of at least one first oxidizer nozzle 1 does not intersect with the central axis of the fuel channel 3, and the first oxidizer nozzle 1 forms a tangential circle within the fuel channel 3. The first oxidizer nozzles 1 are evenly distributed within the fuel channel 3. Furthermore, in order for the first oxidizer nozzles to spray the oxidizer in a counter-swirling manner, the angle β between the central axis of the first oxidizer nozzle and a predetermined longitudinal section meets a certain numerical range, with β ranging from 40° to 75°. The predetermined longitudinal section is a plane that passes through both the central axis of the fuel channel and the endpoint of the outlet of the first oxidizer nozzle. It should be noted that the number of first oxidizer nozzles in this embodiment is not limited to four.

[0087] In an embodiment of the present invention, at least one first oxidant nozzle 1 is designed as an inscribed circle that does not intersect with the fuel channel 3, and the first oxidant nozzle 1 is arranged at an angle β with a predetermined tangent. By changing the arrangement and angle of the first oxidant nozzle 1 within the fuel channel 3, the first oxidant ejected from the first oxidant nozzle 1 can form a swirling flow within the fuel channel 3, thereby facilitating the mixing between the first oxidant C and the gas-solid composite fuel A, thus improving the gasification intensity and reaction efficiency.

[0088] Another aspect of the present invention provides a method for organizing reactants using the above-described reactant organization apparatus, which is described below in conjunction with... Figure 1 The method is described below, and includes:

[0089] Gas-solid composite fuel A and first oxidant C are fed into the gasification melting furnace using a fuel organization unit and a first oxidant organization unit, so that gas-solid composite fuel A and first oxidant C can undergo a predetermined gasification reaction in the gasification melting furnace. Gas-solid composite fuel A is the product of thermal modification of the original fuel in a thermal modification furnace.

[0090] The first oxidant organization unit is used to feed gas-solid composite fuel A into the gasification melting furnace. The fuel organization unit includes a main section and a fuel channel 3 that runs through the main section 2. The inlet of the fuel channel 3 is connected to the outlet of the thermal modification furnace, and the outlet of the fuel channel 3 is connected to the inlet of the gasification melting furnace. The outlet end of the main section is directly connected to the inlet of the gasification melting furnace.

[0091] The first oxidant organization unit is used to feed the first oxidant C into the gasification melting furnace. The first oxidant organization unit includes at least one first oxidant nozzle 1, which is embedded in the main body section 2, and the outlet of the first oxidant nozzle 1 is connected to the fuel passage 3.

[0092] In embodiments of the present invention, a split structure is used to separately transport fuel and oxidant. The fuel channel extends through the main body of the reactant organization device, with its inlet connected to the outlet of the thermal modification furnace and its outlet connected to the inlet of the gasification melting furnace. This effectively avoids the burn-out problem of traditional multi-channel composite burners and allows gas-solid composite fuel to be directly introduced into the fuel channel, forming an independent fuel organization unit for transporting the gas-solid composite fuel. Simultaneously, a first oxidant organization unit is provided within the reactant organization device. At least one first oxidant nozzle is embedded within the main body, and its outlet is connected to the fuel channel. This allows the oxidant transported in the first oxidant nozzle to directly react with the fuel in the fuel channel in the gasification furnace. In addition, the first oxidant units are independent of each other. If one of them is damaged, the other first oxidant units can continue to operate without affecting the overall operation. When replacing or repairing, the gasifier only needs to be stopped briefly to quickly and easily replace the first oxidant nozzles, avoiding long-term shutdowns. The angle and flow rate of each first oxidant nozzle can be controlled independently, thus enabling the setting of different oxidant delivery methods and enhancing the gasification organization effect.

[0093] According to an embodiment of the present invention, the method further includes: feeding a second oxidant B into a gasification melting furnace using a second oxidant organization unit, wherein the second oxidant organization unit includes at least one second oxidant nozzle 4, the second oxidant nozzle 4 is disposed within a fuel channel 3, and the central axis of the second oxidant nozzle 4 is parallel to the central axis of the fuel channel 3. Additionally, a wear-resistant layer 5 is provided on the outer surface of the second oxidant nozzle 4.

[0094] In an embodiment of the present invention, adding a second oxidant organization unit in the fuel channel can further increase the mixing of the oxidant and the gas-solid composite fuel, thereby improving the effect of reactant organization.

[0095] According to an embodiment of the present invention, at least one first oxidizer nozzle 1 is divided into multiple partitioned nozzle groups, and the distance between the outlet end of the first oxidizer nozzle 1 and the central axis of the fuel passage 3 is different in different partitioned nozzle groups.

[0096] According to an embodiment of the present invention, feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes: feeding the first oxidant C into different locations in the gasification melting furnace using multiple partitioned nozzle groups, so as to form multiple different combustion zones in the gasification melting furnace.

[0097] In embodiments of the present invention, by changing the shape of the fuel channel, the first oxidant reacts with gas-solid composite fuels at different distances within the fuel channel, thereby improving the mixing effect of the oxidant and fuel and increasing their reaction efficiency in the gasifier.

[0098] According to an embodiment of the present invention, the central axis of the first oxidizer nozzle 1 intersects the central axis of the fuel passage 3, and at least one first oxidizer nozzle 1 is divided into a first counter-current nozzle group and a second counter-current nozzle group. In the first counter-current nozzle group and the second counter-current nozzle group, the central axes of the first oxidizer nozzle 1 coincide.

[0099] According to an embodiment of the present invention, feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes: feeding the first oxidant C into the gasification melting furnace in the form of a counter-current jet using a first counter-current nozzle assembly and a second counter-current nozzle assembly.

[0100] In an embodiment of the present invention, by changing the way the first oxidant is injected, the first oxidant C can form multiple opposing streams in the fuel channel 3, which is beneficial to the mixing of the first oxidant C and the gas-solid composite fuel A, thereby improving the reaction efficiency.

[0101] According to an embodiment of the present invention, the central axis of the first oxidant nozzle 1 does not intersect with the central axis of the fuel channel 3, and the angle β between the central axis of the first oxidant nozzle 1 and the preset longitudinal section is in the range of 40°-75°, wherein the preset longitudinal section passes through both the central axis of the fuel channel 3 and the outlet end of the first oxidant nozzle 1.

[0102] According to an embodiment of the present invention, feeding a first oxidant into a gasification melting furnace using a first oxidant organization unit includes: feeding the first oxidant C into the gasification melting furnace in the form of a swirling jet using a first oxidant nozzle 1.

[0103] In an embodiment of the present invention, by changing the arrangement and angle of the first oxidant nozzle 1 in the fuel channel 3, the first oxidant sprayed from the first oxidant nozzle 1 can form a swirling flow in the fuel channel 3, which is beneficial to the mixing between the first oxidant C and the gas-solid composite fuel A, thereby improving the gasification intensity and reaction efficiency.

[0104] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reactant organization device, comprising: The fuel organization unit includes a main section and a fuel channel passing through the main section. The inlet of the fuel channel is connected to the outlet of the thermal modification furnace, and the outlet of the fuel channel is connected to the inlet of the gasification and melting furnace. The outlet end of the main section is directly connected to the inlet of the gasification and melting furnace. The first oxidant organization unit includes at least one first oxidant nozzle, which is embedded in the main body section and the outlet of the first oxidant nozzle is connected to the fuel passage. The second oxidant organization unit includes at least one second oxidant nozzle, which is disposed within the fuel passage, and the central axis of the second oxidant nozzle is parallel to the central axis of the fuel passage. The at least one first oxidizer nozzle is divided into multiple partitioned nozzle groups; in the same partitioned nozzle group, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is the same; in different partitioned nozzle groups, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel passage is different.

2. The apparatus according to claim 1, wherein: The outer surface of the second oxidant nozzle is provided with a wear-resistant layer.

3. The apparatus according to claim 1, wherein: The at least one first oxidizer nozzle is evenly distributed along the circumference of the fuel passage.

4. The apparatus according to claim 3, wherein: The horizontal angle α between the central axis of the first oxidant nozzle and the preset cross-section is in the range of 25°-75°, wherein the preset cross-section is perpendicular to the central axis of the fuel passage.

5. The apparatus according to claim 3, wherein: The central axis of the first oxidizer nozzle intersects the central axis of the fuel passage; The at least one first oxidizer nozzle is divided into a first counter-current nozzle group and a second counter-current nozzle group, wherein the central axes of the first oxidizer nozzles coincide in the first counter-current nozzle group and the second counter-current nozzle group.

6. The apparatus according to claim 3, wherein: The central axis of the first oxidizer nozzle does not intersect with the central axis of the fuel passage; The angle β between the central axis of the first oxidant nozzle and the preset longitudinal section is in the range of 40°-75°, wherein the preset longitudinal section passes through both the central axis of the fuel passage and the outlet end of the first oxidant nozzle.

7. The apparatus according to claim 1, wherein: The main body section is made of one of the following materials: silicon carbide, corundum brick, or zirconium oxide.

8. The apparatus according to claim 1, wherein: The first oxidant nozzle is equipped with a water cooling sleeve.

9. A method for organizing reactants, comprising: Gas-solid composite fuel and a first oxidant are fed into a gasification melting furnace using a fuel organization unit and a first oxidant organization unit, so that the gas-solid composite fuel and the first oxidant can undergo a predetermined gasification reaction in the gasification melting furnace. The gas-solid composite fuel is a product of thermally modifying the original fuel in a thermal modification furnace. The first oxidant organization unit is used to feed the gas-solid composite fuel into the gasification melting furnace. The fuel organization unit includes a main body section and a fuel channel penetrating the main body section. The inlet of the fuel channel is connected to the outlet of the thermal modification furnace, and the outlet of the fuel channel is connected to the inlet of the gasification melting furnace. The outlet end of the main body section is directly connected to the inlet of the gasification melting furnace. The first oxidant organization unit is used to feed the first oxidant into the gasification melting furnace. The first oxidant organization unit includes at least one first oxidant nozzle, which is embedded in the main body section, and the outlet of the first oxidant nozzle is connected to the fuel passage. A second oxidant is fed into the gasification melting furnace using a second oxidant organization unit, wherein the second oxidant organization unit includes at least one second oxidant nozzle, the second oxidant nozzle is disposed in the fuel channel, and the central axis of the second oxidant nozzle is parallel to the central axis of the fuel channel; The at least one first oxidizer nozzle is divided into multiple partitioned nozzle groups; in the same partitioned nozzle group, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel channel is the same; in different partitioned nozzle groups, the distance between the outlet end of the first oxidizer nozzle and the central axis of the fuel channel is different; feeding the first oxidizer into the gasification melting furnace using the first oxidizer organization unit includes: feeding the first oxidizer into different positions in the gasification melting furnace using the multiple partitioned nozzle groups respectively, so as to form multiple different combustion zones in the gasification melting furnace.

10. The method according to claim 9, wherein, The central axis of the first oxidizer nozzle intersects with the central axis of the fuel passage. The at least one first oxidizer nozzle is divided into a first counter-current nozzle group and a second counter-current nozzle group. In the first counter-current nozzle group and the second counter-current nozzle group, the central axes of the first oxidizer nozzles coincide. Feeding the first oxidant into the gasification melting furnace using the first oxidant organization unit includes: The first oxidant is fed into the gasification melting furnace in the form of a counter-current jet using the first counter-current nozzle group and the second counter-current nozzle group.

11. The method according to claim 9, wherein, The central axis of the first oxidant nozzle does not intersect the central axis of the fuel passage. The angle β between the central axis of the first oxidant nozzle and the preset longitudinal section is in the range of 40°-75°, wherein the preset longitudinal section passes through both the central axis of the fuel passage and the outlet end of the first oxidant nozzle. Feeding the first oxidant into the gasification melting furnace using the first oxidant organization unit includes: The first oxidant is fed into the gasification and melting furnace in the form of a swirling jet using the first oxidant nozzle.

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