Pulverized coal gasification unit

Abstract

The present invention provides a pulverized coal gasification device, which includes: a gasifier, having a gasification chamber, a pulverized coal inlet, a gas outlet, a flame inlet and a combustion-supporting gas inlet; a gas outlet pipeline, one end of which is connected to the gas outlet and the other end of which inputs the gas into a target scene; a diesel ignition system, including a flame outlet connected to the flame inlet, and the diesel ignition system is used to ignite the pulverized coal in the gasifier; a gas burner, including a gas inlet, a gas storage chamber and a gas nozzle, the gas inlet is connected to the gas outlet pipeline, a gas nozzle is provided at the gas nozzle and extends into the gasification chamber, and a first ignition component is provided at the gas nozzle; a heavy oil burner, including an oil nozzle, an oil nozzle is provided at the oil nozzle, the oil nozzle extends into the gasification chamber, and a second ignition component is provided at the oil nozzle. This solution can improve the smoothness of the working process of the pulverized coal gasification device.

Description

Technical Field

[0001] The present invention relates to the technical field of pulverized coal gasification, and in particular to a pulverized coal gasification device. Background Art

[0002] Pulverized coal gasification technology, as an effective means of converting coal into clean coal gas, has become an important research direction in the field of energy conversion. Pulverized coal gasification technology is a thermochemical process that converts coal into clean coal gas. Specifically, pulverized coal gasification technology is the process of burning pulverized coal to generate clean coal gas in a pulverized coal gasification device. This combustion process improves the utilization efficiency of coal.

[0003] In order to make the pulverized coal burn in the pulverized coal gasification device, an igniter is usually required. The igniter is used to ignite the pulverized coal at startup to make the pulverized coal burn. However, the combustion of the pulverized coal cannot be effectively regulated by the initial ignition operation of the igniter alone. Therefore, the pulverized coal gasification device is usually also equipped with a burner to maintain stability during the combustion process.

[0004] In the prior art, pulverized coal gasification devices are usually equipped with either a heavy oil burner or a gas burner. However, in actual applications, the heavy oil burner or the gas burner may fail, affecting the normal operation of the pulverized coal gasification device. Summary of the invention

[0005] The present invention provides a pulverized coal gasification device to solve the problem that the pulverized coal gasification device in the prior art is equipped with either a heavy oil burner or a gas burner, and the burner may fail, thus affecting the normal operation of the pulverized coal gasification device.

[0006] The present invention provides a pulverized coal gasification device, which comprises: a gasifier having a gasification chamber and a pulverized coal inlet, a gas outlet, a flame inlet and a combustion-supporting gas inlet respectively connected to the gasification chamber; a gas outlet pipeline, one end of which is connected to the gas outlet, and the other end of which is used to input the gas into a target scene; a diesel ignition system, which comprises a flame outlet, which is connected to the flame inlet, and the diesel ignition system is used to ignite the pulverized coal in the gasifier; an integrated combustion device, which comprises a gas burner and a heavy oil burner; the gas burner comprises A gas inlet, a gas storage chamber and a gas nozzle are interconnected, the gas inlet is connected to a gas discharge pipe, a gas nozzle is arranged at the gas nozzle, the gas nozzle extends into the gasification chamber, a first ignition component is arranged at the gas nozzle, and the first ignition component is used to ignite the gas at the gas nozzle; a heavy oil burner, the heavy oil burner comprises a first oil storage chamber and an oil nozzle, an oil nozzle is arranged at the oil nozzle, the oil nozzle extends into the gasification chamber, a second ignition component is arranged at the oil nozzle, and the second ignition component is used to ignite the oil at the oil nozzle.

[0007] Furthermore, the pulverized coal gasification device further comprises: a first flow regulating member, which is arranged at the gas inlet of the gas burner, and the first flow regulating member regulates the gas flow at the gas inlet.

[0008] Furthermore, the pulverized coal gasification device also includes: a combustion-supporting fan; a first air duct, one end of the first air duct is connected to the air outlet of the combustion-supporting fan, and the other end of the first air duct is connected to the combustion-supporting gas inlet; a second air duct, one end of the second air duct is connected to the air outlet of the combustion-supporting fan, and the other end of the second air duct is connected to the gas nozzle.

[0009] Furthermore, the pulverized coal gasification device also includes: an oxygen content detection component, which is arranged in the coal gas exhaust pipeline, and the oxygen content detection component is used to detect the oxygen content in the coal gas exhaust pipeline; a second flow regulating component, which is arranged on the first air duct, and the second flow regulating component is used to adjust the air flow in the first air duct; a control system, which is electrically connected to the oxygen content detection component and the second flow regulating component respectively, and when the oxygen content detected by the oxygen content detection component is higher than a preset value, the control system controls the second flow regulating component to reduce the opening; when the oxygen content detected by the oxygen content detection component is lower than the preset value, the control system controls the second flow regulating component to increase the opening.

[0010] Furthermore, the pulverized coal gasification device also includes: a pulverized coal storage unit having a pulverized coal storage chamber; a pulverized coal conveying unit disposed between the pulverized coal storage unit and the gasifier, the pulverized coal conveying unit being used to convey the pulverized coal in the pulverized coal storage unit to the pulverized coal inlet of the gasifier.

[0011] Furthermore, the coal powder conveying section includes: a coal powder conveying pipeline, one end of which is connected to the bottom of the coal powder storage chamber, and the other end is connected to the coal powder inlet; a coal powder suction fan, which is arranged on the coal powder conveying pipeline, and the coal powder suction fan is used to suck the coal powder in the coal powder storage chamber to the coal powder inlet through the coal powder conveying pipeline.

[0012] Furthermore, the pulverized coal gasification device further comprises: a fluidizing fan, which is arranged at the bottom of the pulverized coal storage portion, and an air outlet of the fluidizing fan is communicated with the bottom of the pulverized coal storage chamber.

[0013] Furthermore, the gasifier also has a first slag storage chamber, which is connected to the bottom of the gasification chamber, and a slag discharge port is provided at the bottom of the slag storage chamber. The pulverized coal gasification device also includes: a slag scoop machine, which has a slag inlet and a second slag storage chamber, and the slag scoop machine is arranged at the bottom of the gasifier body.

[0014] Furthermore, an oil channel is provided on the furnace body of the gasifier, and the oil channel has an inlet end and an outlet end which are relatively arranged. The pulverized coal gasification device also includes: an oil storage tank, having a second oil storage chamber and an oil outlet and an oil return port which are respectively connected to the oil storage chamber by a connecting pipe; an oil outlet pipe, one end of which is connected to the oil outlet, and the other end is connected to the inlet end of the oil channel; an oil return pipe, one end of which is connected to the outlet end of the oil channel, and the other end is connected to the oil return port; a delivery pump, which is arranged on the oil outlet pipe, and is used to deliver the oil in the oil storage tank to the oil channel through the oil outlet pipe.

[0015] Furthermore, the pulverized coal gasification device also includes: an air guide part, which has an air inlet, a guide channel and an air outlet that are interconnected. The air guide part is arranged on the outer wall of the gasifier, the air outlet is connected to the combustion-supporting gas inlet, and the oil return pipe is coiled around the outer periphery of the air guide part, and the oil return pipe exchanges heat with the air guide part.

[0016] By applying the technical solution of the present invention, the pulverized coal is burned and gasified in the gasifier, and the generated gas enters the gas burner through the gas exhaust pipe. The gas is burned again in the gasification chamber through the gas nozzle under the ignition action of the first ignition element, generating additional heat for the gasification process of the pulverized coal, thereby improving the utilization rate of thermal energy. The heavy oil burner can ignite the oil at the oil nozzle through the second ignition element when the gas supply is insufficient, provide additional heat for the gasification process of the pulverized coal in the gasification chamber, and promote the gasification process of the pulverized coal. Equipping the pulverized coal gasification device with a gas burner and a heavy oil burner at the same time can provide a double guarantee for the gasification reaction process of the pulverized coal. Even if one of the gas burner and the heavy oil burner fails, the other burner can provide a promotion effect for the degasification reaction of the pulverized coal, thereby improving the efficiency and stability of the pulverized coal gasification process in the gasifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a pulverized coal gasification device provided by the present invention from a first viewing angle is shown;

[0019] Figure 2 A schematic structural diagram of a pulverized coal gasification device provided by the present invention from a second viewing angle is shown;

[0020] Figure 3 A structural schematic diagram showing a third viewing angle of the first part of the structure of the pulverized coal gasification device provided by the present invention;

[0021] Figure 4A structural schematic diagram showing a fourth viewing angle of the first part of the structure of the pulverized coal gasification device provided by the present invention;

[0022] Figure 5 The schematic diagram of the structure of the second part of the pulverized coal gasification device provided by the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Gasifier; 102. Pulverized coal inlet;

[0025] 20. Gas discharge pipeline;

[0026] 30. Diesel ignition system;

[0027] 40. Integrated combustion device; 41. Fuel inlet;

[0028] 50. Vertical burner;

[0029] 60. Annular burner;

[0030] 70. Combustion-supporting fan;

[0031] 80. First air duct;

[0032] 90. Second air duct;

[0033] 100. Barometer;

[0034] 120. Pulverized coal storage unit; 121. Dust removal fan;

[0035] 130. Pulverized coal conveying unit; 131. Pulverized coal conveying pipeline; 132. Pulverized coal suction fan; 133. Feeding valve;

[0036] 140. Fluidizing fan;

[0037] 150, slag scooping machine; 1501, slag inlet; 1502, second slag storage chamber;

[0038] 160. Oil storage tank;

[0039] 170, oil outlet pipe;

[0040] 200. Air guide portion; 2001. Air inlet. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0042] like Figures 1 to 5 As shown, the present invention provides a pulverized coal gasification device, which includes a gasifier 10, a gas exhaust pipeline 20, a diesel ignition system 30 and an integrated combustion device 40, wherein the integrated combustion device 40 includes a gas burner and a heavy oil burner, the gasifier 10 has a gasification chamber and a pulverized coal inlet 102, a gas exhaust port, a flame inlet and a combustion-supporting gas inlet respectively connected to the gasification chamber; one end of the gas exhaust pipeline 20 is connected to the gas exhaust port, and the other end is used to input the gas to the target scene; the diesel ignition system 30 includes a flame outlet, which is connected to the flame inlet, and the diesel ignition system 30 is used to ignite the coal powder in the gasification furnace 10; the gas burner includes a gas inlet, a gas storage chamber and a gas nozzle which are interconnected, the gas inlet is connected to the gas discharge pipe 20, a gas nozzle is arranged at the gas nozzle, the gas nozzle extends into the gasification chamber, a first ignition component is arranged at the gas nozzle, and the first ignition component is used to ignite the gas at the gas nozzle; the heavy oil burner includes a first oil storage chamber and an oil nozzle, an oil nozzle is arranged at the oil nozzle, the oil nozzle extends into the gasification chamber, a second ignition component is arranged at the oil nozzle, and the second ignition component is used to ignite the oil at the oil nozzle.

[0043] It can be understood that the heavy oil burner further comprises a fuel inlet 41 , through which fuel can be added to the heavy oil burner.

[0044] In the embodiment of the present solution, two gas exhaust pipes 20 are provided, wherein one gas exhaust pipe 20 is used to discharge the gas to the target scene, and the other gas exhaust pipe 20 is used to discharge the gas into the gas burner.

[0045] In some embodiments of the present solution, the gas nozzle and the oil nozzle extend into the gasification chamber through corresponding gas exhaust pipes 20 .

[0046] By applying the technical solution of the present invention, the pulverized coal is burned and gasified in the gasifier 10, and the generated gas is mainly discharged to the target scene, and part of the gas enters the gas burner through the gas discharge pipe 20. The gas entering the gas burner is burned again in the gasification chamber through the gas nozzle under the ignition action of the first ignition element, generating additional heat for the gasification process of the pulverized coal, thereby improving the utilization rate of thermal energy. The heavy oil burner can ignite the oil at the oil nozzle through the second ignition element when the gas supply is insufficient, provide additional heat for the gasification process of the pulverized coal in the gasification chamber, and promote the gasification process of the pulverized coal. Equipping the pulverized coal gasification device with a gas burner and a heavy oil burner at the same time can provide a double guarantee promotion effect for the gasification reaction process of the pulverized coal. Even if one of the gas burner and the heavy oil burner fails, the other burner can also provide a promotion effect for the degasification reaction of the pulverized coal, thereby improving the efficiency and stability of the pulverized coal gasification process in the gasifier 10.

[0047] Specifically, during the startup phase of the gasifier, the diesel ignition system 30 delivers flames into the gasification chamber through the flame outlet to ignite the pulverized coal in the gasifier 10. This process provides the gasifier with the heat required for initial combustion, allowing the gasification reaction of the pulverized coal to start quickly, after which the diesel ignition system 30 can be turned off.

[0048] The pulverized coal generates gas at high temperature, and the gas enters the gas exhaust pipe 20 through the gas exhaust port. Part of the gas is collected or directly transported to the application scene, and part of the gas is transported to the gas storage chamber of the gas burner through the gas inlet. During the combustion process, when the combustion of the pulverized coal is unstable, it is necessary to promote the gasification reaction of the pulverized coal in the gasification chamber through the gas burner. The gas in the gas storage chamber is ignited by the first ignition element at the gas nozzle through the gas nozzle, and the heat energy generated by the combustion of the gas promotes the gasification reaction of the pulverized coal.

[0049] During the combustion process, when the coal powder combustion is unstable and the coal powder gasification reaction in the gasification chamber needs to be promoted by a heavy oil burner, heavy oil is sprayed into the gasification chamber through an oil nozzle, and the second ignition element ignites the heavy oil to provide heat for the coal powder gasification reaction, thereby improving the reaction efficiency of the coal powder gasification reaction.

[0050] In an embodiment of the present scheme, the coal gasification device also includes a vertical burner 50 and an annular burner 60. There are four vertical burners 50, which are respectively arranged around the top of the gasifier 10, and the annular burner 60 is arranged at the center of the top of the gasifier 10. The vertical burners 50 and the annular burners 60 can spray flames into the gasification chamber of the gasifier 10 to provide heat for the gasification process of the coal powder.

[0051] In an embodiment of the present scheme, the coal gasification device also includes a barometer 100, which is arranged on the outer wall of the gasifier 10. The barometer 100 can monitor the internal air pressure of the gasifier 10, so that when the internal air pressure of the gasifier 10 is too high, the staff can respond in time to reduce the occurrence of safety accidents.

[0052] Furthermore, the pulverized coal gasification device further comprises a first flow regulating member, which is disposed at the gas inlet of the gas burner and regulates the gas flow at the gas inlet.

[0053] In the present solution, the first flow regulating component can adjust the gas flow at the gas inlet in real time according to the actual working conditions of the gasifier 10 and the operating requirements of the gas burner, thereby reducing the amount of gas entering the gas storage chamber while ensuring the combustion promotion effect of the gas burner, reducing gas consumption, and reducing heat energy waste. At the same time, precise gas flow control helps to maintain thermal energy balance in the gasification chamber and reduce local overheating or cooling, thereby improving the uniformity and efficiency of coal powder gasification and improving the flexibility and adaptability of the coal powder gasification device.

[0054] In an embodiment of the present solution, the combustion-supporting gas inlet includes a first combustion-supporting gas inlet and a second combustion-supporting gas inlet.

[0055] Furthermore, the pulverized coal gasification device also includes a combustion-supporting fan 70, a first air duct 80 and a second air duct 90; one end of the first air duct 80 is connected to the air outlet of the combustion-supporting fan 70, and the other end of the first air duct 80 is connected to the first combustion-supporting gas inlet; one end of the second air duct 90 is connected to the air outlet of the combustion-supporting fan 70, and the other end of the second air duct 90 is connected to the gas nozzle.

[0056] In the embodiment of the present scheme, the combustion-supporting fan 70 can provide stable combustion-supporting air to improve the efficiency of the coal powder gasification process and the coal gas combustion process.

[0057] The first air duct 80 delivers the combustion-supporting air generated by the combustion-supporting air fan 70 to the first combustion-supporting gas inlet, and then the combustion-supporting air enters the gasification chamber, thereby increasing the air circulation speed in the gasification chamber and promoting the gasification reaction of the coal powder.

[0058] The second air duct 90 delivers the combustion-supporting air generated by the combustion-supporting air fan 70 to the gas nozzle, thereby improving the combustion efficiency of the gas, allowing the gas to burn more fully and release more heat.

[0059] The combustion-supporting fan 70 provides stable combustion-supporting air, reduces the phenomenon of inadequate reaction in the gasification reaction of pulverized coal and the combustion process of coal gas due to insufficient air volume, and improves the stability and reliability of the pulverized coal gasification device.

[0060] Furthermore, the pulverized coal gasification device also includes an oxygen content detection component, a second flow regulating component and a control system. The oxygen content detection component is arranged in the coal gas exhaust pipe 20, and the oxygen content detection component is used to detect the oxygen content in the coal gas exhaust pipe 20; the second flow regulating component is arranged on the first air duct 80, and the second flow regulating component is used to adjust the air flow in the first air duct 80; the control system is electrically connected to the oxygen content detection component and the second flow regulating component respectively, when the oxygen content detected by the oxygen content detection component is higher than a preset value, the control system controls the second flow regulating component to reduce the opening; when the oxygen content detected by the oxygen content detection component is lower than the preset value, the control system controls the second flow regulating component to increase the opening.

[0061] Specifically, when the oxygen content detected by the oxygen content detection component is higher than the preset value, it means that the amount of combustion-supporting air introduced by the combustion-supporting fan 70 is too large, and the control system reduces the amount of combustion-supporting air introduced into the gasification chamber by reducing the opening of the second flow regulating component; when the oxygen content detected by the oxygen content detection component is lower than the preset value, it means that the amount of combustion-supporting air introduced by the combustion-supporting fan 70 is too small, and the control system increases the amount of combustion-supporting air introduced into the gasification chamber by increasing the opening of the second flow regulating component. Through the coordinated cooperation of the oxygen content detection component, the second flow regulating component and the control system, the amount of combustion-supporting air introduced by the combustion-supporting fan 70 is maintained at an appropriate value, providing the best environment for the gasification reaction of coal powder, improving the gasification reaction efficiency of coal powder, and reducing energy waste.

[0062] Furthermore, the pulverized coal gasification device also includes a pulverized coal storage section 120 and a pulverized coal conveying section 130. The pulverized coal storage section 120 has a pulverized coal storage chamber; the pulverized coal conveying section 130 is arranged between the pulverized coal storage section 120 and the gasifier 10, and the pulverized coal conveying section 130 is used to convey the pulverized coal in the pulverized coal storage section 120 to the pulverized coal inlet 102 of the gasifier 10.

[0063] In this solution, the pulverized coal is stored in the pulverized coal storage chamber of the pulverized coal storage unit 120, and the pulverized coal conveying unit 130 can convey the pulverized coal in the pulverized coal storage chamber to the pulverized coal inlet 102, and then the pulverized coal enters the gasification chamber to undergo a gasification reaction. The automated design of the pulverized coal storage unit 120 and the pulverized coal conveying unit 130 reduces the need for manual operation and improves the convenience of operation of the pulverized coal gasification device.

[0064] In the embodiment of the present scheme, the pulverized coal storage section 120 includes a dust removal fan 121, which is arranged at the pulverized coal storage section 120. The top opening of the dust removal fan 121 is connected to a pulse dust removal device to play the role of dust removal and air induction.

[0065] Furthermore, the coal powder conveying section 130 includes a coal powder conveying pipeline 131 and a coal powder suction fan 132, one end of the coal powder conveying pipeline 131 is connected to the bottom of the coal powder storage chamber, and the other end is connected to the coal powder inlet 102; the coal powder suction fan 132 is arranged on the coal powder conveying pipeline 131, and the coal powder suction fan 132 is used to suck the coal powder in the coal powder storage chamber to the coal powder inlet 102 through the coal powder conveying pipeline 131.

[0066] In this solution, the coal powder suction fan 132 can generate sufficient suction force to quickly transport the coal powder from the bottom of the coal powder storage chamber to the coal powder inlet 102 of the gasifier through the coal powder conveying pipeline 131. The above arrangement simplifies the operation process of coal powder supply, reduces the need for manual operation, and improves the working efficiency of the coal powder gasification device.

[0067] Furthermore, the pulverized coal conveying unit further includes a feed valve 133 , which can control the opening degree of the pulverized coal conveying pipeline 131 , thereby controlling the pulverized coal to enter the gasifier 10 .

[0068] Furthermore, the pulverized coal gasification device further includes a fluidizing fan 140 , which is disposed at the bottom of the pulverized coal storage portion 120 , and an air outlet of the fluidizing fan 140 is in communication with the bottom of the pulverized coal storage chamber.

[0069] The fluidizing fan 140 can blow air into the coal powder storage section 120, causing the coal powder in the coal powder storage section 120 to flow. The flowing coal powder is more easily sucked by the coal powder suction fan 132, thereby improving the coal powder conveying efficiency, reducing the possibility of coal powder clogging the coal powder conveying pipeline 131, and improving the continuity and stability of the coal powder conveying process.

[0070] Furthermore, the gasifier 10 also has a first slag storage chamber, which is connected to the bottom of the gasification chamber, and a slag discharge port is provided at the bottom of the first slag storage chamber. The pulverized coal gasification device also includes a slag scoop 150, and the slag scoop 150 has a slag inlet 1501 and a second slag storage chamber 1502. The slag scoop 150 is arranged at the bottom of the gasifier 10 body.

[0071] In the embodiment of the present scheme, slag is generated when the coal powder undergoes a gasification reaction in the gasification chamber of the gasifier 10, and the generated slag sinks downward to the first slag storage chamber. When the coal powder gasification reaction is completed, the slag discharge port at the bottom of the first slag storage chamber is opened; the slag collecting part of the slag collecting machine 150 extends into the first slag storage chamber to carry out the slag collecting operation, and the slag collected enters the second slag storage chamber of the slag collecting machine 150 through the slag inlet 1501 for collection. The above arrangement makes the slag collection process relatively simple, and improves the convenience of operation of the coal powder gasification device.

[0072] Furthermore, an oil channel is provided on the furnace body of the gasifier 10, and the oil channel has an inlet end and an outlet end that are relatively arranged. The pulverized coal gasification device also includes an oil storage tank 160, an oil outlet pipe 170, an oil return pipe and a delivery pump. The oil storage tank 160 has a second oil storage chamber and an oil outlet and an oil return port that are respectively connected to the oil storage chamber. One end of the oil outlet pipe 170 is connected to the oil outlet, and the other end is connected to the inlet end of the oil channel. One end of the return oil pipe is connected to the outlet end of the oil channel, and the other end is connected to the oil return port. The delivery pump is arranged on the oil outlet pipe 170, and the delivery pump is used to transport the oil in the oil storage tank 160 to the oil channel through the oil outlet pipe 170.

[0073] In the embodiment of the present scheme, the delivery pump delivers the oil in the oil storage tank 160 to the inlet end of the oil channel of the gasifier 10 through the oil outlet pipe 170, and the oil circulation starts. The oil circulates through the oil channel, exchanges heat with the furnace body of the gasifier, absorbs the heat of the furnace body, and prevents the furnace body from being damaged due to excessive temperature. The oil that has absorbed the heat returns to the oil storage tank 160 through the oil return pipe. The pulverized coal gasification device also includes a heat exchange pipe, which contains a refrigerant. The heat exchange pipe can exchange heat with the oil return pipe, absorb the heat of the oil in the oil return pipe, and reduce the temperature of the oil returned to the oil storage tank 160.

[0074] Furthermore, the pulverized coal gasification device also includes an air guide part 200, which has an air inlet 2001, a guide channel and an air outlet that are interconnected. The air guide part 200 is arranged on the outer wall of the gasifier 10, and the air outlet is connected to the second combustion-supporting gas inlet. The oil return pipe is coiled around the outer periphery of the air guide part 200, and the oil return pipe exchanges heat with the air guide part 200.

[0075] Specifically, an induced draft fan is provided in the air guide 200, and the induced draft fan can draw outside air into the air guide 200, and the drawn air enters the gasification chamber through the air inlet 2001, the guide channel, the air outlet, and the combustion-supporting gas inlet in sequence. The oil return pipe is coiled around the outer periphery of the air guide 200, and heat exchanges with the air guide 200, and can preheat the air in the air guide 200, so that the air entering the gasifier 10 through the air guide 200 has a higher temperature, so as to accelerate the coal powder gasification reaction speed.

[0076] Furthermore, a filter is provided at the air inlet 2001 of the air guide 200. Such a configuration can ensure the cleanliness of the air entering the gasifier 10 and improve the smoothness of the coal powder combustion.

[0077] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0078] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0079] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0080] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0081] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulverized coal gasification device, characterized in that: include: A gasifier (10) having a gasification chamber and a pulverized coal inlet (102), a coal gas outlet, a flame inlet and a combustion-supporting gas inlet respectively connected to the gasification chamber; a gas discharge pipeline (20), one end of which is connected to the gas discharge port, and the other end of which is used to input the gas into the target scene; A diesel ignition system (30), comprising a flame outlet, the flame outlet being in communication with the flame inlet, the diesel ignition system (30) being used to ignite the pulverized coal in the gasifier (10); An integrated combustion device (40) comprises a gas burner and a heavy oil burner, wherein the gas burner comprises a gas inlet, a gas storage chamber and a gas nozzle which are interconnected, the gas inlet is connected to the gas discharge pipe (20), a gas nozzle is arranged at the gas nozzle, the gas nozzle extends into the gasification chamber, a first ignition component is arranged at the gas nozzle, and the first ignition component is used to ignite the gas at the gas nozzle; the heavy oil burner comprises a first oil storage chamber and an oil nozzle, an oil nozzle is arranged at the oil nozzle, the oil nozzle extends into the gasification chamber, a second ignition component is arranged at the oil nozzle, and the second ignition component is used to ignite the oil at the oil nozzle.

2. The pulverized coal gasification device according to claim 1, characterized in that: The pulverized coal gasification device further comprises: The first flow regulating member is arranged at the gas inlet of the gas burner, and the first flow regulating member regulates the gas flow at the gas inlet.

3. The pulverized coal gasification device according to claim 1, characterized in that: The pulverized coal gasification device further comprises: Combustion-supporting fan (70); A first air duct (80), one end of the first air duct (80) being in communication with the air outlet of the combustion-supporting fan (70), and the other end of the first air duct (80) being in communication with the combustion-supporting gas inlet; A second air duct (90), one end of the second air duct (90) is connected to the air outlet of the combustion-supporting air fan (70), and the other end of the second air duct (90) is connected to the gas nozzle.

4. The pulverized coal gasification device according to claim 3, characterized in that: The pulverized coal gasification device further comprises: an oxygen content detection component, arranged in the coal gas discharge pipeline (20), the oxygen content detection component being used to detect the oxygen content in the coal gas discharge pipeline (20); a second flow regulating member, disposed on the first air duct (80), the second flow regulating member being used to regulate the air flow in the first air duct (80); The control system is electrically connected to the oxygen content detection component and the second flow regulating component, respectively. When the oxygen content detected by the oxygen content detection component is higher than a preset value, the control system controls the second flow regulating component to reduce the opening; when the oxygen content detected by the oxygen content detection component is lower than a preset value, the control system controls the second flow regulating component to increase the opening.

5. The pulverized coal gasification device according to claim 3, characterized in that: The pulverized coal gasification device further comprises: A pulverized coal storage unit (120) having a pulverized coal storage chamber; A pulverized coal conveying section (130) is arranged between the pulverized coal storage section (120) and the gasifier (10), and the pulverized coal conveying section (130) is used to convey the pulverized coal in the pulverized coal storage section (120) to the pulverized coal inlet (102) of the gasifier (10).

6. The pulverized coal gasification device according to claim 5, characterized in that: The pulverized coal conveying unit (130) comprises: a pulverized coal conveying pipeline (131), one end of the pulverized coal conveying pipeline (131) being in communication with the bottom of the pulverized coal storage chamber, and the other end of the pulverized coal conveying pipeline (131) being in communication with the pulverized coal inlet (102); A coal powder suction fan (132) is arranged on the coal powder conveying pipeline (131), and the coal powder suction fan (132) is used to suck the coal powder in the coal powder storage chamber to the coal powder inlet (102) through the coal powder conveying pipeline (131).

7. The pulverized coal gasification device according to claim 6, characterized in that: The pulverized coal gasification device further comprises: A fluidizing fan (140) is arranged at the bottom of the pulverized coal storage portion (120), and an air outlet of the fluidizing fan (140) is connected to the bottom of the pulverized coal storage chamber.

8. The pulverized coal gasification device according to claim 1, characterized in that: The gasifier (10) further comprises a first slag storage chamber, the first slag storage chamber is communicated with the bottom of the gasification chamber, a slag discharge port is arranged at the bottom of the first slag storage chamber, and the pulverized coal gasification device further comprises: A slag scooping machine (150) has a slag inlet (1501) and a second slag storage chamber (1502), and the slag scooping machine (150) is arranged at the bottom of the gasification furnace (10) body.

9. The pulverized coal gasification device according to claim 1, characterized in that: The gasifier (10) is provided with an oil channel on its furnace body, wherein the oil channel has an inlet end and an outlet end which are arranged opposite to each other. The pulverized coal gasification device further comprises: An oil storage tank (160) having a second oil storage chamber and an oil outlet and an oil return port respectively connected to a pipe of the second oil storage chamber; An oil outlet pipe (170), one end of the oil outlet pipe (170) being in communication with the oil outlet port, and the other end of the oil outlet pipe (170) being in communication with the inlet end of the oil channel; An oil return pipe, one end of which is connected to the outlet end of the oil channel, and the other end of which is connected to the oil return port; A delivery pump is arranged on the oil outlet pipe (170), and is used to deliver the oil in the oil storage tank (160) to the oil channel through the oil outlet pipe (170).

10. The pulverized coal gasification device according to claim 9, characterized in that: The pulverized coal gasification device further comprises: The air guide part (200) comprises an air inlet (2001), a guide channel and an air outlet which are interconnected. The air guide part (200) is arranged on the outer wall of the gasifier (10). The air outlet is connected to the combustion-supporting gas inlet. The oil return pipe is spiraled around the outer periphery of the air guide part (200). The oil return pipe exchanges heat with the air guide part (200).

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