A biomass gasification fuel gas delivery system

Abstract

The present application relates to the field of biomass energy processing technology, and specifically discloses a biomass gasification fuel gas delivery system, including a biomass gasification furnace, and further including: a cooling device is arranged on the gas output pipeline of the biomass gasification furnace; a water cooling circulation mechanism is connected to the cooling device, and a guide waste discharge cylinder is connected to the output pipeline of the biomass gasification furnace; a waste discharge cylinder cleaning mechanism is arranged on the outer wall of the guide waste discharge cylinder; a tar dust removal mechanism is arranged above the guide waste discharge cylinder, and an ammonia water supplement mechanism is connected to the input pipeline of the waste discharge cylinder cleaning mechanism through the water cooling circulation mechanism; a monitoring and purification mechanism is arranged on the output end of the tar dust removal mechanism. The present invention realizes fuel gas cooling, tar dust removal, equipment cleaning and maintenance, and stable delivery.

Description

Technical Field

[0001] The invention relates to the technical field of biomass energy processing, and in particular to a biomass gasification fuel gas transportation system. Background Art

[0002] As the demand for clean energy continues to grow, biomass energy has attracted much attention as a renewable energy source. Biomass gasification technology has emerged, which converts biomass into combustible gas through a biomass gasifier. However, during the biomass gasification process, the gas produced by the high-temperature pyrolysis reaction in the gasifier has a temperature of up to 600-800 degrees Celsius and contains a large amount of tar and dust. If it is not effectively treated, the high-temperature gas is not conducive to subsequent transportation and utilization. Tar and dust are easily deposited in the transportation pipeline and equipment, causing pipeline blockage, equipment corrosion and damage, etc., seriously affecting the stability and reliability of the entire biomass gasification gas transportation system, reducing the gas quality, and hindering the efficient use of biomass energy. Traditional treatment methods are difficult to simultaneously meet the requirements of cooling, tar and dust removal, equipment cleaning and maintenance, and stable transportation. Therefore, a new type of biomass gasification gas transportation system is urgently needed to overcome the above-mentioned difficulties and realize the effective development and reuse of biomass energy. Summary of the invention

[0003] The embodiment of the present application provides a biomass gasification gas delivery system, the main purpose of which is to achieve gas cooling, tar dust removal, equipment cleaning and maintenance, and stable delivery.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides a biomass gasification gas delivery system, including a biomass gasification furnace, and further comprising:

[0005] A cooling device, arranged on the gas output pipeline of the biomass gasifier, for cooling the gas outputted from the biomass gasifier;

[0006] A water cooling circulation mechanism, connected to the cooling device, for providing the low-temperature flow medium required by the cooling device;

[0007] A guide waste discharge cylinder connected to the output pipeline of the biomass gasifier for discharging tar and dust;

[0008] A waste discharge tube cleaning mechanism, arranged on the outer wall of the guide waste discharge tube, for cleaning the guide waste discharge tube;

[0009] A tar dust removal mechanism is arranged above the guide waste discharge cylinder and is used for dust and tar adsorption and dust removal on the biomass gas;

[0010] An ammonia water replenishing mechanism is connected to the input pipeline of the waste discharge barrel cleaning mechanism via the water cooling circulation mechanism;

[0011] A monitoring and purification mechanism is arranged on the output end of the tar dust removal mechanism, and an air supply pipe is also connected to the outside of the monitoring and purification mechanism;

[0012] The tar dust removal mechanism includes an exhaust purification area and a gas-stop cleaning area which are not fixedly arranged, and the gas-stop cleaning area can overlap or partially overlap after rotating around the tar dust removal mechanism.

[0013] In a feasible embodiment, the cooling device includes: a liquid-cooled heat exchanger wrapped around the outside of the gas output pipeline of the biomass gasification furnace, a water-cooled circulation pipeline is arranged on the liquid-cooled heat exchanger, the water-cooled circulation pipeline is connected to the water-cooled circulation mechanism, and an ammonia supply pipeline also runs through the heating position inside the liquid-cooled heat exchanger.

[0014] In a feasible embodiment, the guide waste discharge cylinder includes a lower cylinder body, and also includes: a waste discharge isolation cylinder is spirally arranged at an angle above the end of the biomass gasification furnace output pipeline, and the cylinder cavity cross-section of the waste discharge isolation cylinder gradually increases from bottom to top; a waste collecting chamber is opened in the inner cavity of the lower cylinder body, and the waste collecting chamber is connected with the waste discharge isolation cylinder, and the waste collecting chamber is also provided with a waste discharge pipeline.

[0015] In a feasible embodiment, the waste discharge isolation cylinder includes: a side plate that is cylindrical and can be rotatably engaged in the upper half of the inner cavity of the lower cylinder; a partition plate is arranged inside the side plate, the inner side of the partition plate encloses the gas stop cleaning area, and the outer side of the partition plate and the inner side of the side plate enclose an exhaust purification area, and the area of ​​the exhaust purification area is an integer multiple of the area of ​​the gas stop cleaning area; a spray port is opened on the outer wall of the side plate in the gas stop cleaning area, and the ammonia water replenishing mechanism includes a plurality of spray heads, and the spray heads are snapped on the outer wall of the lower cylinder corresponding to the position of the spray port.

[0016] In a feasible embodiment, the tar dust removal mechanism includes a middle cylinder, and also includes: a bottom guide plate fixedly arranged at the bottom end of the middle cylinder; a plurality of sedimentation tubes are arranged in a group in the inner cavity of the middle cylinder along the circumferential direction and are located above the bottom guide plate; corona columns and the sedimentation tubes are arranged in the center position of the inner cavity of the sedimentation tubes in a one-to-one correspondence; a plurality of cleaning power components are respectively fixedly arranged above each group of the sedimentation tubes, and are transmission-connected to the corona columns in each group of the sedimentation tubes; a central shaft is rotatable along its own axis and is arranged at the center position of the middle cylinder; a stepper motor is fixedly arranged on the end of the central shaft, and the stepper motor is used to drive the central shaft to rotate; at least one cleaning guide can be movably arranged in the inner cavity air flow channel of the sedimentation tube and contacts the inner wall of the sedimentation tube, and the cleaning guide is transmission-connected to the corona column.

[0017] In a feasible embodiment, the cleaning power assembly includes: a plurality of mounting platforms, each of which is fixedly mounted above a group of the sedimentation stage tubes; a plurality of hydraulic motors are fixedly mounted on the mounting platforms, and the output end of the bottom end of the hydraulic motor is connected to the corona column; a hydraulic oil closed circulation pipeline runs through the hydraulic oil inlet and outlet ends of all the hydraulic motors in one of the mounting platforms; a drive pump is connected to the hydraulic oil closed circulation pipeline for controlling the flow of hydraulic oil; a drive motor is fixedly mounted on the outer wall of the central shaft, and the output end of the drive motor can be switched to be connected to the power input end of each drive pump by rotation.

[0018] In a feasible implementation manner, an insulating sleeve is also passed through the placement platform, and two ends of the insulating sleeve are respectively locked to the corona column and the output end of the hydraulic motor through couplings.

[0019] In a feasible embodiment, the cleaning guide includes: a first lifting block, the first lifting block can move in the inner cavity of the sedimentation grade tube, the middle part of the first lifting block is screwed on the outer wall of the corona column, and the sedimentation grade tube is non-cylindrical; a second lifting block, the second lifting block can move in the inner cavity of the sedimentation grade tube, the middle part of the second lifting block is screwed on the outer wall of the corona column, and is adjacent to the first lifting block; multiple groups of airflow centripetal guide blades are fixedly arranged on the inner wall of the first lifting block; multiple first support rods, each of which is fixed through all the airflow centripetal guide blades in a group; multiple groups of airflow outward expansion guide blades are fixedly arranged on the inner wall of the second lifting block; multiple second support rods, each of which is fixed through all the airflow outward expansion guide blades in a group; a scraper can be elastically rotatably arranged on the outer wall of the first lifting block and / or the second lifting block, and the outer end of the scraper is connected to the inner wall of the sedimentation grade tube.

[0020] In a feasible embodiment, the monitoring and purification mechanism includes an upper cylinder body, and also includes: a plurality of connecting covers, each of the connecting covers corresponds one-to-one to the position of each group of the sedimentation stage pipes; an exhaust pipe is fixedly connected to the top of the connecting cover; a gas flow quality monitor is fixedly mounted at the end of the exhaust pipe for monitoring the current exhaust pipe gas flow rate; and a filling purification material is replaceably arranged in the exhaust pipe or the connecting cover.

[0021] In a feasible embodiment, the monitoring and purification mechanism also includes a controller, the signal output end of the controller is connected to all the gas flow quality monitoring meters, the number and angle information of each group of the precipitation stage tubes are also provided in the controller, and the signal output end of the controller is connected to the stepper motor.

[0022] The biomass gasification gas delivery system provided in the present application can effectively reduce the high-temperature biomass gasification gas from 600-800 degrees Celsius to 30-50 degrees Celsius through the cooperation of a cooling device and a water cooling circulation mechanism. Celsius, causing tar and dust to condense and precipitate, which is convenient for subsequent separation and treatment; the gas containing tar and dust can be received and discharged through the guide waste tube, and its waste tube cleaning mechanism can prevent tar and dust from accumulating and clogging with the help of ammonia water replenishing mechanism after the ammonia water is heated by the water-cooling circulation mechanism, so as to realize periodic automatic cleaning and reduce the difficulty and cost of cleaning; the tar and dust removal mechanism further purifies the gas through adsorption, and has the settings of exhaust purification area and gas shutdown cleaning area, which can carry out local cleaning and maintenance when the system is not stopped, which not only ensures the continuity of the purification process, but also reduces the efficiency loss caused by shutdown cleaning, prolongs its own service life, and continuously and stably supplies high-cleanliness gas for subsequent links; the monitoring and purification mechanism monitors the gas quality and deeply purifies it to ensure the quality of the gas. The whole system can effectively utilize biomass energy, ensure smooth gas transportation, reduce the adverse effects of tar and dust on subsequent equipment and pipelines, and promote the efficient development and utilization of biomass energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a biomass gasification gas delivery system provided in an embodiment of the present application is shown;

[0024] Figure 2 A schematic diagram of the structure of a cooling device and an ammonia water replenishing mechanism provided in an embodiment of the present application is shown;

[0025] Figure 3 A schematic diagram of the structure of a tar dust removal mechanism provided in an embodiment of the present application is shown;

[0026] Figure 4 A schematic diagram of the structure of a waste isolation box provided in an embodiment of the present application is shown;

[0027] Figure 5 A schematic diagram of the structure of a precipitation stage tube provided in an embodiment of the present application is shown;

[0028] Figure 6 A schematic diagram of the structure of a partition plate provided in an embodiment of the present application is shown;

[0029] Figure 7 A schematic diagram of the structure of a cleaning power assembly provided in an embodiment of the present application is shown;

[0030] Figure 8 A schematic diagram of the structure of a set of precipitation stage tubes and a corresponding cleaning power assembly provided in an embodiment of the present application is shown;

[0031] Fig. 9A schematic diagram of the structure of the filling purification material provided in an embodiment of the present application is shown;

[0032] Fig.10 A schematic structural diagram of a cleaning guide provided in an embodiment of the present application is shown.

[0033] In the figure: 10, biomass gasifier, 20, cooling device, 30, water cooling circulation mechanism, 40, ammonia water supplement mechanism, 50, guide waste discharge cylinder, 60, waste discharge cylinder cleaning mechanism, 70, tar dust removal mechanism, 80, monitoring and purification mechanism, 90, air supply pipe, 21, liquid-cooled heat exchanger, 22, water cooling circulation pipeline, 23, ammonia water supply pipeline, 51, lower cylinder, 52, waste discharge isolation cylinder, 53, waste collection chamber, 71, middle cylinder, 72, bottom guide plate, 73, corona column, 74, precipitation grade tube, 75, cleaning power assembly, 76, central axis, 77, stepping motor, 78, cleaning guide Parts, 81, upper cylinder, 82, connecting cover, 83, exhaust pipe, 84, gas flow quality monitoring meter, 85, filling purification material, 521, side plate, 522, partition plate, 523, spray port, 731, insulation kit, 751, placement table, 752, hydraulic motor, 753, hydraulic oil closed circulation pipeline, 754, drive pump, 755, power input shaft, 756, drive motor, 781, first lifting block, 782, second lifting block, 783, airflow centripetal guide plate, 784, first support rod, 785, airflow outward guide plate, 786, second support rod, 787, scraper. DETAILED DESCRIPTION

[0034] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0035] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0036] See also Figures 1 to 10 As shown, the embodiment of the present application provides a biomass gasification gas delivery system, including a biomass gasification furnace 10, and also includes: a cooling device 20, a water cooling circulation mechanism 30, an ammonia water supplement mechanism 40, a guide waste discharge cylinder 50, a waste discharge cylinder cleaning mechanism 60 and a tar dust removal mechanism 70, the cooling device 20 is arranged on the gas output pipeline of the biomass gasification furnace 10, and is used to cool the gas output by the biomass gasification furnace 10; the water cooling circulation mechanism 30 is connected to the cooling device 20, and is used to provide the low-temperature flow medium required by the cooling device 20; the guide waste discharge cylinder 50 and the biomass gas are connected to the water cooling circulation mechanism 30. The output pipeline of the biomass furnace 10 is connected to discharge tar and dust; the waste discharge tube cleaning mechanism 60 is arranged on the outer wall of the guide waste discharge tube 50, and is used to clean the guide waste discharge tube 50; the tar dust removal mechanism 70 is arranged above the guide waste discharge tube 50, and is used to adsorb and remove dust and tar from the biomass gas; the ammonia water supplement mechanism 40 is connected to the input pipeline of the waste discharge tube cleaning mechanism 60 through the water cooling circulation mechanism 30; the monitoring and purification mechanism 80 is arranged on the output end of the tar dust removal mechanism 70, and the monitoring and purification mechanism 80 is also connected to the air supply pipe 90;

[0037] In the biomass gasification fuel gas transmission system provided by the present application, the biomass energy with utilization value is processed through the biomass gasifier 10, including the gas temperature produced by the high-temperature pyrolysis reaction of the biomass gasifier 10 is too high, which may reach 600-800 degrees Celsius. The gas enters the cooling device 20 through the output pipeline. The cooling device 20 reduces the gas temperature by means of the low-temperature flow medium provided by the water-cooling circulation mechanism 30, for example, to 30-50 degrees Celsius, so that part of the tar and dust condense and are easily precipitated; the guide waste discharge tube 50 is connected to the output pipeline of the biomass gasifier 10 to receive the gas containing tar and dust after cooling; the guide waste discharge tube cleaning mechanism 60 on the outer wall of the guide waste discharge tube 50 is connected to the ammonia water replenishing mechanism 40; the room temperature ammonia water provided by the ammonia water replenishing mechanism 40 is raised to a higher temperature after passing through a hotter position in the water-cooling circulation mechanism 30, and the temperature is increased at the high The guide waste discharge tube 50 is cleaned under the action of warm ammonia water to prevent tar and dust accumulation from clogging the guide waste discharge tube 50, thereby reducing the difficulty of cleaning and even achieving the level of periodic automatic cleaning; the tar dust removal mechanism 70 is located above the guide waste discharge tube 50, and removes dust and tar in the gas through adsorption (such as electrosorption) to further purify the gas; the gas treated by the tar dust removal mechanism 70 enters the monitoring and purification mechanism 80, which monitors the gas quality and performs deep purification, and the purified gas is transported out through the gas supply pipe 90; this system can effectively utilize biomass energy, remove tar and dust in biomass gasification fuel gas, ensure smooth fuel gas transportation, improve fuel gas quality, reduce the adverse effects of tar and dust on subsequent equipment and transportation pipelines, and ensure the stable and reliable operation of the entire biomass gasification fuel gas transportation process.

[0038] The tar dust removal mechanism 70 includes an exhaust purification area and a gas-stop cleaning area which are not fixedly arranged. The gas-stop cleaning area can overlap or partially overlap after rotating around the tar dust removal mechanism 70 .

[0039] It is understandable that when the biomass gasification gas enters the exhaust purification area of ​​the tar dust removal mechanism 70, the tar and dust in the gas are adsorbed and purified, so that the gas is preliminarily cleaned. As the operation progresses, a large amount of impurities (such as tar dust or other particulate matter) may be attached to the tar dust removal mechanism 70. When the exhaust purification area needs to be cleaned, the exhaust purification area to be cleaned is switched to the gas stop cleaning area in a rotating manner. At this time, the gas can be stopped from entering this area, and the cleaning device of the gas stop cleaning area is used to clean the tar and dust adsorbed in the previous exhaust purification area. After the cleaning is completed, when the next area needs to be cleaned as the device is used, the position where the cleaning is completed is restored to the exhaust purification area to work, and the purification work of the biomass gasification gas is resumed. This setting can realize the local cleaning and maintenance of the tar dust removal mechanism 70 without stopping the entire system, ensuring the continuity of the biomass gasification gas purification process, reducing the efficiency loss caused by shutdown cleaning, and effectively extending the service life of the tar dust removal mechanism 70, and continuously and stably providing biomass gasification gas with a higher degree of cleanliness for subsequent links.

[0040] like Figure 1 and Figure 2 As shown, in some examples, further, the cooling device 20 includes: a liquid-cooled heat exchanger 21 is coated on the outside of the gas output pipeline of the biomass gasification furnace 10, and a water-cooled circulation pipeline 22 is arranged on the liquid-cooled heat exchanger 21, and the water-cooled circulation pipeline 22 is connected to the water-cooled circulation mechanism 30, and an ammonia supply pipeline 23 is also passed through the heating position inside the liquid-cooled heat exchanger 21.

[0041] In this example, it can be understood that the high-temperature gas generated by the biomass gasifier 10 flows in the gas output pipeline, the liquid-cooled heat exchanger 21 covers its outer side, and the water-cooled circulation mechanism 30 transports the low-temperature flow medium to the liquid-cooled heat exchanger 21 through the water-cooled circulation pipeline 22. The low-temperature flow medium absorbs the heat of the gas when flowing in the liquid-cooled heat exchanger 21, so that the gas is cooled down and preliminary cooling is achieved. At the same time, the ammonia water supply pipeline 23 runs through the internal heating position of the liquid-cooled heat exchanger 21, and the ammonia water flows in the pipeline. On the one hand, the heat in the liquid-cooled heat exchanger 21 can be used to heat the ammonia water, improve the cleaning effect of the ammonia water on the tar, and achieve heat recovery. On the other hand, the presence of ammonia water can enhance the cooling effect and prevent the tar from polymerizing at high temperature. It can effectively reduce the temperature of the biomass gasification gas, reduce the polymerization of tar, make the tar and dust easier to handle, improve the work efficiency of the subsequent guide waste discharge cylinder 50, the tar dust removal mechanism 70, etc., and ensure the stable operation of the entire biomass gasification gas transportation system.

[0042] like Figures 2 to 7As shown, in some examples, further, the guide waste discharge cylinder 50 includes a lower cylinder body 51, and also includes: a waste discharge isolation cylinder 52 and a waste collecting chamber 53. The waste discharge isolation cylinder 52 is spirally arranged at an angle above the end of the output pipeline of the biomass gasification furnace 10, and the cross-section of the cylinder cavity of the waste discharge isolation cylinder 52 gradually increases from bottom to top; the waste collecting chamber 53 is opened in the inner cavity of the lower cylinder body 51, and the waste collecting chamber 53 is connected to the waste discharge isolation cylinder 52, and the waste collecting chamber 53 is also provided with a waste discharge pipeline.

[0043] In this example, the biomass gasification fuel gas after cooling flows out from the end of the output pipe of the biomass gasifier 10 and enters the area of ​​the guide waste discharge cylinder 50; the waste discharge isolation cylinder 52 is spirally located obliquely above the end of the output pipe. Because the cross-section of the cylinder cavity gradually increases from bottom to top, the fuel gas flow gradually rotates during the rising process, generating centrifugal force on the impurities contained inside it; at the same time, the flow rate gradually decreases, and the tar and dust therein are easier to separate and slide down under the action of gravity and inertia; the separated tar and dust flow along the waste discharge isolation cylinder 52 into the waste collecting chamber 53 connected thereto, and the waste collecting chamber 53 is opened in the inner cavity of the lower cylinder 51. The waste collecting chamber 53 can collect impurities produced from the exhaust purification area and the gas stop cleaning area, and finally discharge the tar and dust from this device through the waste discharge pipeline of the waste collecting chamber 53; therefore, the setting of this example can effectively separate and collect tar and dust in the biomass gasification fuel gas, reduce its residue in subsequent pipelines and equipment, and avoid pipeline blockage and equipment failure caused by accumulation of tar and dust.

[0044] like Figures 4 to 7 As shown, in some examples, further, the waste isolation cylinder 52 includes: a side plate 521, a partition plate 522 and a spray port 523, the side plate 521 is cylindrical and can be rotatably clamped in the upper half of the inner cavity of the lower cylinder 51; the partition plate 522 is arranged in the side plate 521, the inner side of the partition plate 522 encloses a gas stop cleaning area, and the outer side of the partition plate 522 and the inner side of the side plate 521 enclose an exhaust purification area, and the area of ​​the exhaust purification area is an integer multiple of the area of ​​the gas stop cleaning area. The integer multiple setting makes it easy to evenly divide the cleaning position; the spray port 523 is opened on the outer wall of the side plate 521 of the gas stop cleaning area, and the ammonia replenishing mechanism 40 includes a plurality of spray heads, which are snapped on the outer wall of the lower cylinder 51 corresponding to the position of the spray port 523.

[0045] It is worth mentioning that in this example, the biomass gasification gas is isolated outside the waste isolation cylinder 52 and rises through the cleaning and purification area. Therefore, the position of the tar dust removal mechanism 70 corresponding to the gas stop cleaning area can be closed and ventilated by setting the waste isolation cylinder 52, creating an environment conducive to cleaning and avoiding the problem of dust, tar and impurities generated during the cleaning process entering again with the air flow; in this process, dust and tar are further separated in the exhaust purification area. The cleaning mechanism simultaneously carries out cleaning work in the gas stop cleaning area.

[0046] If a new exhaust purification area needs to be cleaned, the side plate 521 rotates to make the air-stopping cleaning area overlap with the exhaust purification area that needs to be cleaned, and the air intake is stopped at the position that needs to be cleaned. It should also be noted that ammonia water is usually used as a cleaning agent for the tar dust removal mechanism 70 in the industry, but since the common means of the tar dust removal mechanism 70 is to use electric capture, the liquid flushing causes the electric capture equipment to easily malfunction and requires shutdown for processing. Therefore, the ammonia water in this example is only used for spraying into the inner cavity of the waste isolation cylinder 52 at the non-charged position to avoid tar and dust collected during cleaning or daily use from clogging the impurity discharge channel, thereby comprehensively and specifically specifying different cleaning measures for unused cleaning positions to reduce the frequency of shutdown cleaning and maintenance.

[0047] During the cleaning process of the waste discharge isolation cylinder 52, multiple spray heads of the replenishing mechanism correspond to the positions of the spray ports 523 to spray ammonia water into the waste discharge isolation cylinder 52 below the gas stop cleaning area. The ammonia water cleans the tar and dust in the area, and the cleaned waste liquid flows into the waste collecting chamber 53 and is discharged through the waste discharge pipeline; the side panel 521 serves as the overall structural support, and the partition panel 522 divides the waste discharge isolation cylinder 52 into different functional areas, among which the exhaust purification area is mainly responsible for daily purification tasks, and its larger area can meet the normal processing volume requirements, while the gas stop cleaning area performs cleaning operations at specific times to ensure the continuous and effective operation of the entire waste discharge isolation cylinder 52, effectively prevent blockage caused by excessive accumulation of tar and dust, maintain the overall guide waste discharge cylinder 50 and the tar and dust removal mechanism 70 in good working condition, and ensure the smoothness of subsequent gas purification and transportation links.

[0048] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, in some examples, further, the tar dust removal mechanism 70 includes a middle cylinder 71, and also includes: a bottom guide plate 72, a corona column 73, a plurality of precipitation grade tubes 74, a plurality of cleaning power components 75, a central shaft 76, a stepper motor 77 and a cleaning guide 78; the bottom guide plate 72 is fixedly arranged at the bottom end of the middle cylinder 71; a plurality of precipitation grade tubes 74 form a group, and the plurality of precipitation grade tubes 74 are arranged in the inner cavity of the middle cylinder 71 along the circumferential direction and are located above the bottom guide plate 72; the corona column 73 and the precipitation grade tube 74 are arranged one by one at the precipitation grade tube 74. The central position of the inner cavity; multiple cleaning power components 75 are respectively fixedly arranged above each group of sedimentation grade tubes 74, and are transmission-connected to the corona column 73 in each group of sedimentation grade tubes 74; the central shaft 76 is rotatable along its own axis and is arranged at the central position of the middle cylinder 71; the stepper motor 77 is fixedly arranged on the end of the central shaft 76, and the stepper motor 77 is used to drive the central shaft 76 to rotate; at least one cleaning guide 78 can be movably arranged in the inner cavity air flow channel of the sedimentation grade tube 74, and contacts with the inner wall of the sedimentation grade tube 74, and the cleaning guide 78 is transmission-connected to the corona column 73.

[0049] In this example, specifically, the biomass gasification gas is guided into the middle cylinder 71 through the bottom guide plate 72. Under the action of the electric field formed between the multiple groups of sedimentation tubes 74 and the corresponding corona columns 73, the dust and tar particles are charged and move to the inner wall of the sedimentation tube 74 for adsorption, thereby achieving preliminary purification. The cleaning power assembly 75 can drive the corona column 73 to move (for example, rotate) when necessary, and cooperate with the cleaning guide 78 in the sedimentation tube 74. The cleaning guide 78 contacts the inner wall of the sedimentation tube 74. Under the drive of the corona column 73, the tar and dust adsorbed on the inner wall of the sedimentation tube 74 can be cleaned to prevent blockage and excessive adhesion from affecting the purification effect. The central shaft 76 rotates under the drive of the end stepper motor 77, so as to achieve the switching of the cleaning position and make the cleaning process proceed in an orderly manner. Therefore, this example can efficiently remove tar and dust from the biomass gasification gas, maintain the good working performance of the tar and dust removal mechanism 70, and provide cleaner gas for the subsequent monitoring and purification mechanism 80.

[0050] like Figure 7 and Figure 8As shown, in some examples, further, the cleaning power assembly 75 includes: a plurality of placement platforms 751, a plurality of hydraulic motors 752, a hydraulic oil closed circulation pipeline 753, a drive pump 754, a power input shaft 755, a bevel gear and a drive motor 756, each placement platform 751 is fixedly placed above a group of precipitation grade tubes 74; a plurality of hydraulic motors 752 are fixedly installed on the placement platform 751, and the output end of the bottom end of the hydraulic motor 752 is connected to the corona column 73; the hydraulic oil closed circulation pipeline 753 runs through all the hydraulic motors 75 in a placement platform 751 2 hydraulic oil inlet and outlet ends; the driving pump 754 is connected to the hydraulic oil closed circulation pipeline 753 for controlling the flow of hydraulic oil; the driving motor 756 is fixedly arranged on the outer wall of the central shaft 76, and the output end of the driving motor 756 is provided with a bevel gear, and the input end of the driving pump 754 is provided with a power input shaft 755 and another bevel gear. In the process of the driving motor 756 rotating around the central shaft 76, the bevel gears on the power input shafts 755 of multiple driving pumps 754 can be meshed and connected, and the power input end connected to each driving pump 754 can be switched by rotation.

[0051] In this example, when it is necessary to clean the outer wall of the corona column 73 in the sedimentation stage tube 74 and the inner wall of the sedimentation stage tube 74, the drive motor 756 is started and rotated around the central axis 76 to the position that needs to be cleaned under the rotation of the stepper motor 77; after rotating to the target angle, the bevel gear at the output end of the drive motor 756 is meshed and connected with the bevel gear on the corresponding power input shaft 755 of the drive pump 754 to realize the switching of the power input end; the drive pump 754 is connected to the hydraulic oil closed circulation pipeline 753, and when the drive pump 754 is driven by the drive motor 756, the hydraulic oil is controlled to flow in the hydraulic oil closed circulation pipeline 753 that runs through all the hydraulic motors 752 in the single placement platform 751; the hydraulic motor 752 is hydraulically It is started under the action of oil, and its bottom output end drives the corona column 73 to rotate, and the corona column 73 then drives the cleaning guide 78 connected to it to move in the air flow channel of the inner cavity of the sedimentation stage tube 74, so as to clean the tar and dust adsorbed on the inner wall of the sedimentation stage tube 74 and the outer wall of the corona column 73; wherein a plurality of mounting platforms 751 provide a stable installation position for the hydraulic motor 752; this example can accurately switch the drive pump 754, so that the hydraulic motors 752 in a group of sedimentation stage tubes 74 can work synchronously and orderly, effectively drive the cleaning components, reduce the difficulty of cleaning and maintenance of the sedimentation stage tubes 74, prevent the degradation of the purification effect due to the accumulation of tar and dust, ensure that the biomass gasification fuel gas can be continuously and efficiently purified, and ensure the reliability of the operation of the entire transportation system.

[0052] like Figure 8As shown, in some examples, further, an insulating sleeve 731 is passed through the placement platform 751, and two ends of the insulating sleeve 731 are respectively locked to the corona column 73 and the output end of the hydraulic motor 752 through couplings.

[0053] It can be understood that the insulating kit 731 plays the role of isolating electric current, preventing the hydraulic motor 752 and the corona column 73 from generating electric current in a straight line, avoiding the influence of electric current interference on the normal function of the corona column 73 and the electric field environment in which it is located, and ensuring that the electric field in the sedimentation stage tube 74 will not be destroyed by external current factors during the cleaning process, so that the entire tar dust removal mechanism 70 can be cleaned and maintained normally without affecting the subsequent purification treatment of the biomass gasification fuel gas, thereby maintaining the stable operation of the tar dust removal mechanism 70.

[0054] like Fig.10 As shown, in some examples, further, the cleaning guide 78 includes: a first lifting block 781, a second lifting block 782, a plurality of airflow centripetal guide plates 783, a plurality of first support rods 784, a plurality of airflow outward expansion guide plates 785, a plurality of second support rods 786 and a scraper 787, the first lifting block 781 can move in the inner cavity of the precipitation grade tube 74, the middle part of the first lifting block 781 is screwed on the outer wall of the corona column 73, and the precipitation grade tube 74 is non-cylindrical; the second lifting block 782 can move in the inner cavity of the precipitation grade tube 74, the middle part of the second lifting block 782 is screwed on the outer wall of the corona column 73, and is adjacent to the first lifting block Block 781; multiple groups of airflow centripetal guide blades 783 are fixedly arranged on the inner wall of the first lifting block 781; multiple first support rods 784, wherein each first support rod 784 is fixedly passed through all the airflow centripetal guide blades 783 in a group; multiple groups of airflow outward expansion guide blades 785 are fixedly arranged on the inner wall of the second lifting block 782; multiple second support rods 786, wherein each second support rod 786 is fixedly passed through all the airflow outward expansion guide blades 785 in a group; the scraper 787 is elastically rotatably arranged on the outer wall of the first lifting block 781 and / or the second lifting block 782, and the outer end of the scraper 787 is connected to the inner wall of the sedimentation stage tube 74.

[0055] In this example, when it is necessary to clean the inner wall of one group of sedimentation tubes 74, when the multiple corona columns 73 rotate under the drive of the hydraulic motor 752, the first lifting block 781 and the second lifting block 782 screwed on the outer wall thereof move synchronously along the length direction of the sedimentation tube 74; the multiple groups of airflow centripetal guide plates 783 on the first lifting block 781 and the first supporting rod 784 passing through the first lifting block 781 make the airflow passing through here produce centripetal movement, which makes it easier for dust and tar to gather toward the corona column 73 in the center of the sedimentation tube 74; the multiple groups of airflow outward expansion guide plates 785 and the second supporting rod 786 on the second lifting block 782 make the airflow produce outward expansion movement, further pushing the impurities to move toward the tube wall of the sedimentation tube 74; preventing the impurities in the airflow from passing through the inner cavity of the sedimentation tube 74 in a regular state, greatly increasing the probability of dust and impurities being adsorbed on the sedimentation tube 74 and the corona column 73; in addition, the scraper 787 is elastically rotatably arranged The scraper 787 is on the outer wall of the first lifting block 781 and / or the second lifting block 782 and contacts the inner wall of the sedimentation grade tube 74. During the downward movement of the lifting blocks, the scraper 787 scrapes off the tar and dust adsorbed on the inner wall of the sedimentation grade tube 74. Its elastic rotation can adapt to the change of the tube wall shape. During the upward movement, no force is applied to clean the inner wall of the sedimentation grade tube 74. In this way, during the downward movement of the two lifting blocks, large particles of tar dust and other impurities can be pushed down into the waste discharge isolation cylinder 52, so that the impurities can be sent out in a direction and avoid remaining in the tar dust removal mechanism 70. Therefore, this example can effectively enhance the guiding effect of the airflow in the sedimentation grade tube 74 on the impurities, improve the separation efficiency of dust and tar, thoroughly clean the impurities on the tube wall through the scraper 787, prevent the sedimentation grade tube 74 from being blocked, maintain the efficient operation of the tar dust removal mechanism 70, ensure that the biomass gasification fuel gas is fully purified in the mechanism, and improve the purification quality of the fuel gas by the entire transportation system.

[0056] like Fig. 9 As shown, in some examples, further, the monitoring and purification mechanism 80 includes an upper cylinder 81, and also includes: multiple connecting covers 82, exhaust pipes 83, gas flow quality monitors 84 and filling purification materials 85, each connecting cover 82 corresponds to the position of each group of sedimentation stage pipes 74 one by one; the exhaust pipe 83 is fixedly connected to the top of the connecting cover 82; the gas flow quality monitor 84 is fixedly arranged at the end of the exhaust pipe 83, for monitoring the current gas flow size of the exhaust pipe 83; the filling purification material 85 is replaceably arranged in the exhaust pipe 83 or the connecting cover 82.

[0057] In this example, it should be noted that the biomass gasification fuel gas purified by the multiple groups of sedimentation tubes 74 in the tar dust removal mechanism 70 enters the monitoring and purification mechanism 80 through the connection cover 82 corresponding to the positions of the multiple groups of sedimentation tubes 74, and then flows into the exhaust pipe 83; the gas flow quality monitoring meter 84 monitors the gas flow at the end of the exhaust pipe 83, and determines whether the transportation of each group of sedimentation tubes 74 is normal through the flow data. If the flow of one group of sedimentation tubes 74 decreases or the quality of the treated air decreases, it means that the current position of the exhaust pipe 83 is normal. The corresponding settling stage tube 74 group may have excessive impurities attached. Therefore, through the corresponding setting of the exhaust pipe and the settling stage tube 74 group, the impurity attachment state of each settling stage tube 74 can be automatically and immediately known; thereby generating an automatic controllable command signal to support the switching of the cleaning position of the tar dust removal mechanism 70; in addition, the filling purification material 85 is placed in the exhaust pipe 83 or the connecting cover 82, which can further absorb the residual impurities and deeply purify the fuel gas; therefore, this example improves the overall monitoring capability and purification degree of the biomass gasification fuel gas.

[0058] In some examples, further, the monitoring and purification mechanism 80 also includes a controller (not shown in the figure), the signal output end of the controller is connected to all the gas flow quality monitoring meters 84, the number and angle information of each group of sedimentation stage tubes 74 are also set in the controller, and the signal output end of the controller is connected to the stepper motor 77.

[0059] It can be understood that the gas flow quality monitor 84 transmits the monitored gas flow data of the exhaust pipe 83 to the controller, and the controller analyzes and processes the gas flow data according to the pre-set number and angle information of each group of sedimentation stage tubes 74; if the gas flow corresponding to a group of sedimentation stage tubes 74 is abnormal (flow rate decreases or air quality decreases), it may mean that there are problems such as blockage or decreased purification efficiency in the group of sedimentation stage tubes 74; at this time, the controller sends a signal to the stepper motor 77 according to the analysis result, and the stepper motor 77 drives the central shaft 76 to rotate, thereby driving the drive motor 756 to connect to the corresponding cleaning power mechanism. After the cleaning power mechanism of the area to be cleaned is started, the corresponding sedimentation stage tube 74 is cleaned; in this example, the controller plays a core role in data processing and control coordination. By integrating the gas flow information and the sedimentation stage tube 74 information, the stepper motor 77 action is accurately controlled to achieve the effect of intelligent monitoring and automated maintenance of the working status of the sedimentation stage tube 74, to ensure the stable operation of the tar dust removal mechanism 70, to improve the reliability and automation of the entire biomass gasification gas transmission system, and to reduce the operation interruption or gas quality degradation caused by equipment failure or poor purification.

[0060] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A biomass gasification fuel gas delivery system, comprising a biomass gasification furnace (10), characterized in that: Also includes: A temperature reduction device (20), arranged on the gas output pipeline of the biomass gasification furnace (10), and used for reducing the temperature of the gas output from the biomass gasification furnace (10); A water cooling circulation mechanism (30) connected to the cooling device (20) and used to provide a low-temperature flowing medium required by the cooling device (20); A guide waste discharge cylinder (50) connected to an output pipeline of the biomass gasification furnace (10) for discharging tar and dust; A waste discharge tube cleaning mechanism (60) is arranged on the outer wall of the guide waste discharge tube (50) and is used to clean the guide waste discharge tube (50); A tar dust removal mechanism (70) is arranged above the guide waste discharge cylinder (50) and is used for removing dust and tar from the biomass gas by adsorption; an ammonia water replenishing mechanism (40) connected to an input pipeline of the waste discharge barrel cleaning mechanism (60) via the water cooling circulation mechanism (30); A monitoring and purification mechanism (80) is arranged on the output end of the tar dust removal mechanism (70), and an air supply pipe (90) is also connected to the outside of the monitoring and purification mechanism (80); The tar dust removal mechanism (70) comprises an exhaust purification area and a gas stop cleaning area which are arranged non-fixedly, and the gas stop cleaning area can overlap or partially overlap after rotating around the tar dust removal mechanism (70); The waste guide cylinder (50) comprises a lower cylinder body (51), and further comprises: A waste discharge isolation cylinder (52) is spirally arranged obliquely above the end of the output pipe of the biomass gasification furnace (10), and the cylinder cavity cross section of the waste discharge isolation cylinder (52) gradually increases from bottom to top; A waste collecting chamber (53) is provided in the inner chamber of the lower cylinder (51), the waste collecting chamber (53) is connected to the waste discharge isolation cylinder (52), and the waste collecting chamber (53) is also provided with a waste discharge pipeline; The waste discharge isolation cylinder (52) comprises: The side plate (521) is cylindrical and rotatably engaged in the upper inner cavity of the lower cylinder (51); A partition plate (522) is arranged inside the side plate (521), the inner side of the partition plate (522) encloses the gas-stop cleaning area, the outer side of the partition plate (522) and the inner side of the side plate (521) enclose an exhaust gas purification area, and the area of ​​the exhaust gas purification area is an integer multiple of the area of ​​the gas-stop cleaning area; A spray port (523) is provided on the outer wall of the side plate (521) of the gas stop cleaning area, and the ammonia water replenishing mechanism (40) comprises a plurality of spray heads, which are buckled on the outer wall of the lower cylinder (51) corresponding to the position of the spray port (523).

2. A biomass gasification fuel gas delivery system according to claim 1, characterized in that: The temperature reduction device (20) comprises: A liquid-cooled heat exchanger (21) is coated on the outside of the gas output pipeline of the biomass gasifier (10); a water-cooled circulation pipeline (22) is provided on the liquid-cooled heat exchanger (21); the water-cooled circulation pipeline (22) is connected to the water-cooled circulation mechanism (30); and an ammonia water supply pipeline (23) also runs through the heating position inside the liquid-cooled heat exchanger (21).

3. A biomass gasification fuel gas delivery system according to claim 1, characterized in that: The tar dust removal mechanism (70) comprises a middle cylinder (71), and further comprises: A bottom guide plate (72) fixedly disposed on the bottom end of the middle cylinder (71); A plurality of sedimentation stage tubes (74) form a group, and the plurality of groups of sedimentation stage tubes (74) are arranged in the inner cavity of the middle cylinder (71) along the circumferential direction and are located above the bottom guide plate (72); A corona column (73) is arranged at the center of the inner cavity of the precipitation grade tube (74) in a one-to-one correspondence with the precipitation grade tube (74); A plurality of cleaning power components (75) are respectively fixedly arranged above each set of the precipitation grade tubes (74) and are drivingly connected to the corona column (73) in each set of the precipitation grade tubes (74); A central shaft (76) is arranged at the center of the middle cylinder (71) and is rotatable along its own axis; A stepper motor (77) is fixedly arranged on the end of the central shaft (76), and the stepper motor (77) is used to drive the central shaft (76) to rotate; At least one cleaning guide (78) is movably disposed in the inner cavity air flow channel of the precipitation stage tube (74) and in contact with the inner wall of the precipitation stage tube (74); the cleaning guide (78) is drivingly connected to the corona column (73).

4. A biomass gasification fuel gas delivery system according to claim 3, characterized in that: The cleaning power assembly (75) comprises: A plurality of placement platforms (751), each of the placement platforms (751) being fixedly placed above a group of the precipitation stage tubes (74); A plurality of hydraulic motors (752) are fixedly mounted on the placement platform (751), wherein the output ends at the bottom ends of the hydraulic motors (752) are connected to the corona columns (73); A hydraulic oil closed circulation pipeline (753) running through the hydraulic oil inlet and outlet ends of all the hydraulic motors (752) in one of the placement platforms (751); A driving pump (754) connected to the hydraulic oil closed circulation pipeline (753) for controlling the flow of the hydraulic oil; The drive motor (756) is fixedly mounted on the outer wall of the central shaft (76), and the output end of the drive motor (756) can be switched to be connected to the power input end of each drive pump (754) by means of rotation.

5. A biomass gasification fuel gas delivery system according to claim 4, characterized in that: An insulating sleeve (731) is also passed through the placement platform (751), and two ends of the insulating sleeve (731) are respectively locked to the corona column (73) and the output end of the hydraulic motor (752) through couplings.

6. A biomass gasification fuel gas delivery system according to claim 4, characterized in that: The cleaning guide (78) comprises: a first lifting block (781), the first lifting block (781) being movable in the inner cavity of the precipitation stage tube (74), the middle portion of the first lifting block (781) being screwed onto the outer wall of the corona column (73), and the precipitation stage tube (74) being non-cylindrical; a second lifting block (782), the second lifting block (782) being able to move in the inner cavity of the precipitation stage tube (74), the middle portion of the second lifting block (782) being screwed onto the outer wall of the corona column (73) and being adjacent to the first lifting block (781); A plurality of groups of airflow centripetal guide blades (783) are fixedly mounted on the inner wall of the first lifting block (781); A plurality of first support rods (784), wherein each of the first support rods (784) is fixedly connected through all of the airflow centripetal guide blades (783) in a group; A plurality of groups of airflow outward expansion guide blades (785) are fixedly arranged on the inner wall of the second lifting block (782); A plurality of second support rods (786), wherein each of the second support rods (786) is fixed and runs through all of the airflow outward expansion guide blades (785) in a group; The scraper (787) is elastically rotatably arranged on the outer wall of the first lifting block (781) and / or the second lifting block (782), and the outer end of the scraper (787) is connected to the inner wall of the sedimentation stage tube (74).

7. A biomass gasification fuel gas delivery system according to claim 4, characterized in that: The monitoring and purification mechanism (80) comprises an upper cylinder (81), and further comprises: A plurality of connection covers (82), each of the connection covers (82) corresponding one-to-one to the position of each group of the precipitation stage pipes (74); An exhaust pipe (83) fixedly connected to the top end of the connection cover (82); A gas flow quality monitor (84) is fixedly mounted at the end of the exhaust pipe (83) and is used to monitor the current gas flow rate of the exhaust pipe (83); A filling purification material (85) is replaceably arranged in the exhaust pipe (83) or the connecting cover (82).

8. A biomass gasification fuel gas delivery system according to claim 7, characterized in that: The monitoring and purification mechanism (80) further comprises a controller, wherein a signal output end of the controller is connected to all the gas flow quality monitors (84), and the number and angle information of each group of the precipitation stage tubes (74) are also provided in the controller, and the signal output end of the controller is connected to the stepping motor (77).

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