Preheating recovery device of biomass gasifier

Abstract

The utility model provides a preheating recovery device of a biomass gasifier, and relates to the technical field of preheating recovery of gasifiers. A buckled sealing cover is mounted at the upper end of the gasification furnace; a through pipe hole is formed in the upper end of the right end of the gasification furnace. Impurities in hot gas can be blocked and limited through the filter screen, when the impurities on the filter screen are too many, the filter pipe and the filter screen are convenient to disassemble and clean, the impurities in the hot gas cannot enter a pipeline for conveying heat energy, and therefore the pipeline for conveying the heat energy can stably supply heat; the device can be used for heating other processes, so that the problems that hot gas energy is generated by combustion in the gasification furnace, energy waste is avoided, recycling is needed, some impurities are contained in recycled hot gas, and if the recycled hot gas cannot be filtered and cleaned conveniently, some impurities enter a pipeline for conveying heat energy, and the heat energy is wasted are solved. And slow accumulation may cause blockage or influence heat supply.

Description

Technical Field

[0001] This utility model relates to the field of gasifier preheating and recovery technology, and in particular to a preheating and recovery device for biomass gasifiers. Background Technology

[0002] Against the backdrop of global energy shortages and increasingly severe environmental pollution, seeking efficient and clean energy utilization methods is particularly important. Biomass gasification furnaces, as devices that utilize biomass resources (such as wood chips and agricultural waste) to generate renewable energy, have significant potential in improving energy efficiency and reducing emissions. To further improve the operating efficiency of biomass gasification furnaces, preheating recovery devices have emerged. The core idea of ​​preheating recovery is to recover the heat emitted during the gasification process and use it to preheat the raw materials or gas supply within the gasification furnace. This process helps improve overall thermal efficiency, reduces dependence on external heat sources, and thus lowers energy consumption. During the gasification process, due to the high moisture and volatile matter content of biomass, preheating can reduce the energy required for gasification and increase the gasification reaction rate. Simultaneously, the preheated material can quickly reach the required gasification temperature upon entering the reaction zone, thereby effectively increasing the yield and quality of the gas.

[0003] During the use of the preheating recovery device, the combustion in the gasifier produces hot gas energy, which needs to be recovered to avoid energy waste. However, the recovered hot gas contains some impurities. If it cannot be filtered and cleaned easily, some impurities will enter the pipeline that transports the heat energy. Over time, these impurities may cause blockages or affect the heating supply. Utility Model Content

[0004] This disclosure relates to a preheating recovery device for a biomass gasifier. The gasifier generates hot gas energy which is then transported and recovered. When the hot gas enters the filter pipe in the recovery pipeline, the filter screen blocks and restricts impurities in the hot gas. When there are too many impurities on the filter screen, the filter pipe and filter screen can be easily disassembled and cleaned. In this way, impurities in the hot gas will not enter the pipeline that transports the heat energy, thereby ensuring a stable heat supply to the pipeline. By recovering the heat generated during the gasification process, it can be used to heat other processes, improving energy utilization efficiency and reducing energy waste, which directly reduces operating costs. Especially for large-scale gasification facilities, this can significantly reduce energy expenditure in the long run.

[0005] In a first aspect, this disclosure provides a preheating and recovery device for a biomass gasifier, specifically comprising: a gasifier; a snap-fit ​​sealing cover installed at the upper end of the gasifier; a through-hole pipe opening at the upper right end of the gasifier; a through-hole recovery pipe fixedly inserted into the through-hole at the upper end of the gasifier, and a slot opening at the middle of the upper end of the recovery pipe; and three positioning slots at the bottom of the inner cavity of the recovery pipe.

[0006] A filter tube is slidably installed at the lower end of the recycling pipe groove, and a bearing groove is opened in the middle of the upper end of the filter tube; three positioning blocks are fixedly installed at the lower end of the filter tube; a baffle is fixedly installed at the left end of the inner wall of the filter tube; a fixing ring is fixedly installed at the right end of the inner wall of the filter tube, and a threaded groove is opened on the side wall of the fixing ring; a filter screen is installed on the right side wall of the fixing ring, and a screw is rotatably inserted at the edge of the filter screen.

[0007] A heat exchanger is installed at the right end of the recovery pipe, and two rows of threaded grooves are opened at the upper end of the left side wall of the heat exchanger; a pipe hole is opened on the left side wall of the heat exchanger, a protective net is installed at the upper end of the heat exchanger, and through conveying pipes are evenly inserted on the right side wall of the heat exchanger.

[0008] In at least some embodiments, a support plate is fixedly installed on the upper right end of the gasifier, and a through threaded hole is provided in the middle of the support plate.

[0009] In at least some embodiments, the support plate has four through guide holes, and the right end of the support plate is fixedly installed with mutually symmetrical stabilizing bars, and four through bolts are rotatably installed on the stabilizing bars.

[0010] In at least some embodiments, connecting plates are fixedly installed at the upper ends of both ends of the filter tube, and limiting plates are fixedly installed at the upper ends of the connecting plates.

[0011] In at least some embodiments, the upper ends of the two limiting plates are respectively fixedly installed with mutually symmetrical guide rods, and a bearing ring is rotatably installed at the bearing groove at the upper end of the filter tube.

[0012] In at least some embodiments, a vertically upward adjusting rod is fixedly installed in the inner ring of the bearing ring, and the annular sidewall of the adjusting rod is threaded, and a short column is fixedly installed at the upper end of the adjusting rod.

[0013] This utility model provides a preheating recovery device for a biomass gasification furnace, which has the following beneficial effects:

[0014] In this invention, the recovery device generates hot gas energy from the gasifier, which is then transported and recovered. When the hot gas enters the filter pipe in the recovery pipeline, the filter screen blocks and restricts impurities in the hot gas. When there are too many impurities on the filter screen, the filter pipe and filter screen can be easily disassembled and cleaned. In this way, impurities in the hot gas will not enter the pipeline that transports the heat energy, thus ensuring a stable heat supply. By recovering the heat generated during the gasification process, it can be used to heat other processes, improving energy utilization efficiency and reducing energy waste, which directly reduces operating costs. Especially for large-scale gasification facilities, this can significantly reduce energy expenditure in the long run.

[0015] By removing the filter screen from the filter tube, it is easy to clean the impurities in the filter tube and also to clean the impurities adhering to the filter screen. After the impurities in the filter tube are cleaned, the clean filter tube will not affect the flow of hot air, so that heat energy can be provided in a timely manner. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the left front upper axis view structure of this application is shown;

[0020] Figure 2 This paper shows a schematic diagram of the disassembled structure of the support plate and recycling pipeline of this application;

[0021] Figure 3 A cross-sectional disassembly diagram of the recycling pipeline section of this application is shown;

[0022] Figure 4 A schematic diagram of the exploded structure of this application is shown.

[0023] List of reference numerals

[0024] 1. Gasifier; 101. Support plate; 102. Guide hole; 103. Stabilizing bar; 2. Recovery pipe; 201. Positioning groove; 202. Filter pipe; 203. Positioning block; 204. Baffle; 205. Fixing ring; 206. Filter screen; 207. Connecting plate; 208. Limiting plate; 209. Guide rod; 210. Bearing ring; 211. Adjusting rod; 3. Heat exchanger; 301. Protective net; 302. Conveying pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1: Please refer to Figures 1 to 4 :

[0027] This utility model proposes a preheating and recovery device for a biomass gasifier, comprising: a gasifier 1; a snap-fit ​​sealing cover installed at the upper end of the gasifier 1; when igniting the combustibles in the gasifier 1, the sealing cover is first used to seal the upper end of the gasifier 1, at which point the hot gas in the gasifier 1 enters the recovery pipe 2 from the right end pipe hole, then enters the heat exchanger 3 from the recovery pipe 2, and then enters the conveying pipe 302 from the heat exchanger 3. The heat energy in the conveying pipe 302 then provides heat energy to other equipment. A through pipe hole is provided at the upper end of the right end of the gasifier 1; the through recovery pipe 2 is fixedly installed at the pipe hole at the upper end of the gasifier 1, and a slot is provided in the middle of the upper end of the recovery pipe 2. A heat exchanger 3 is installed at the right end of the recovery pipe 2, and two rows of threaded grooves are opened at the upper end of the left side wall of the heat exchanger 3. A pipe hole is opened on the left side wall of the heat exchanger 3, and the right end of the recovery pipe 2 is inserted into the pipe hole at the left end of the heat exchanger 3. The heat energy entering the heat exchanger 3 will provide heat energy to small equipment in various places through the conveying pipe 302. At the same time, some gas will be discharged from the upper port of the heat exchanger 3 to directly provide heat energy to the equipment above. Meanwhile, the protective net 301 will filter the smoke and dust in the hot gas to prevent the smoke and dust from contacting the equipment above. A protective net 301 is installed at the upper port of the heat exchanger 3, and the conveying pipe 302 is evenly inserted on the right side wall of the heat exchanger 3.

[0028] A support plate 101 is fixedly installed on the upper right end of the gasifier 1. A through threaded hole is opened in the middle of the support plate 101. The adjusting rod 211 is rotatably inserted into the threaded hole of the support plate 101. Four through guide holes 102 are opened on the support plate 101. Symmetrical stabilizing bars 103 are fixedly installed on the right end of the support plate 101. Four through bolts are rotatably installed on the stabilizing bars 103. The bolts on the stabilizing bars 103 are rotatably inserted into the threaded groove of the heat exchanger 3 to fix and restrict the stabilizing bars 103 and the support plate 101. When the support plate 101 is touched, it will not move or fall off. In this way, the support plate 101 can stably support the adjusting rod 211.

[0029] The bottom of the inner cavity of the recovery pipe 2 is provided with three positioning grooves 201; a filter pipe 202 is slidably installed at the lower end of the groove opening of the recovery pipe 2, and a bearing groove is provided in the middle of the upper end of the filter pipe 202; three positioning blocks 203 are fixedly installed at the lower end of the filter pipe 202; the positioning blocks 203 are inserted into the positioning grooves 201 to stabilize and restrict the filter pipe 202; a baffle 204 is fixedly installed at the left end of the inner wall of the filter pipe 202; to prevent backflow after the impurities entering the filter pipe 202 fall, the baffle 204 will block some impurities; a fixing ring 205 is fixedly installed at the right end of the inner wall of the filter pipe 202, and a threaded groove is opened on the side wall of the fixing ring 205; when hot air enters the filter pipe 202, the impurities in the hot air are affected. When the filter screen 206 blocks the flow, impurities fall into the filter tube 202. When the gasifier 1 stops running, grasp the short column on the adjusting rod 211 and rotate it upward to move the filter tube 202. At this time, the filter tube 202 and the limiting plate 208 will also move upward. When the filter tube 202 moves upward, remove the filter screen 206 from the filter tube 202 to facilitate cleaning the impurities in the filter tube 202 and to clean the impurities adhering to the filter screen 206. After the impurities in the filter tube 202 are cleaned, rotate the adjusting rod 211 downward. When the concave surface of the limiting plate 208 is attached to the side wall of the upper end of the recovery pipe 2, and the positioning block 203 is inserted into the positioning groove 201, the filter tube 202 will stop. The filter tube 202 connects to the recycling pipe 2. A filter screen 206 is installed on the right side wall of the fixing ring 205, and a screw is inserted into the edge of the filter screen 206. Removing the screw from the filter screen 206 allows it to be removed from the fixing ring 205. The screw on the filter screen 206 is inserted into the threaded groove of the fixing ring 205, temporarily fixing the filter screen 206 to the fixing ring 205. Connecting plates 207 are fixedly installed at the upper ends of both ends of the filter tube 202, and limiting plates 208 are fixedly installed at the upper ends of the connecting plates 207. The lower end of the limiting plate 208 has an arc-shaped structure, and the concave surface of the limiting plate 208 is tightly attached to the side wall of the upper end of the recycling pipe 2. The two limiting plates 208... Symmetrical guide rods 209 are fixedly installed at the upper end. The guide rods 209 slide through the guide holes 102. When the filter tube 202 slides up and down, the guide rods 209 are restricted by the guide holes 102, and the filter tube 202 can only slide up and down to prevent it from tilting when sliding up and down. Otherwise, the filter tube 202 will not be able to enter the recovery pipe 2 smoothly. A bearing ring 210 is rotatably installed at the bearing groove at the upper end of the filter tube 202. A vertically upward adjusting rod 211 is fixedly installed in the inner ring of the bearing ring 210. The annular side wall of the adjusting rod 211 is threaded. A short column is fixedly installed at the upper end of the adjusting rod 211. Grabbing the short column on the adjusting rod 211 makes it easy to rotate and adjust the position of the filter tube 202 up and down.

[0030] Example 2, based on Example 1, such as Figure 1 and Figure 4 As shown, symmetrical stabilizing bars 103 are fixedly installed on the right end of the support plate 101, and four through bolts are rotatably installed on the stabilizing bars 103. After removing the stabilizing bars 103 and bolts, the right end of the support plate 101 is fixedly welded to the heat exchanger 3 to stabilize and restrict the support plate 101. In this way, the support plate 101 will not move or fall when touched, avoiding the loosening of bolts after long-term use, and also saving the cost of parts.

[0031] The working principle of this embodiment is as follows: When igniting the combustion material in the gasifier 1, first seal the upper end of the gasifier 1 with the sealing cover. At this time, the hot gas in the gasifier 1 will enter the recovery pipe 2 from the right end pipe hole. The hot gas will pass through the filter pipe 202 and enter the heat exchanger 3. The hot gas will then enter the conveying pipe 302 from the heat exchanger 3. The heat energy in the conveying pipe 302 will provide heat energy to other equipment. When the hot gas enters the filter pipe 202, the impurities in the hot gas will be blocked by the filter screen 206 and stop flowing. At this time, the impurities will fall into the filter pipe 202. When the gasifier 1 stops running, grasp the short column on the adjusting rod 211 and rotate it upward to move the filter pipe 202. At this time, the filter pipe 202 and the limiting plate 208 will also move upward. When the filter pipe 202 moves upward out of the filter pipe 202... At 02, remove the filter screen 206 from the filter tube 202 to facilitate cleaning impurities in the filter tube 202 and to clean impurities adhering to the filter screen 206. After cleaning the impurities in the filter tube 202, rotate the adjusting rod 211 downwards. When the concave surface of the limiting plate 208 is attached to the side wall of the upper end of the recovery pipe 2, and the positioning block 203 is inserted into the positioning groove 201, the filter tube 202 will stop moving downwards. At the same time, the filter tube 202 will connect to the recovery pipe 2, and the heat energy entering the heat exchanger 3 will be supplied to various small devices through the conveying pipe 302. At the same time, some gas will be discharged from the upper port of the heat exchanger 3 to directly supply heat energy to the equipment above. Meanwhile, the protective net 301 will filter the dust in the hot gas to prevent the dust from contacting the equipment above.

[0032] The following points should be noted in this article:

[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A preheating and recovery device for a biomass gasification furnace, comprising: A gasifier (1); a snap-fit ​​sealing cover is installed at the upper end of the gasifier (1); a through pipe hole is opened at the upper right end of the gasifier (1); characterized in that a through recovery pipe (2) is fixedly inserted at the pipe hole at the upper end of the gasifier (1), and a slot is opened at the middle of the upper end of the recovery pipe (2); three positioning slots (201) are opened at the bottom of the inner cavity of the recovery pipe (2); a filter pipe (202) is slidably installed at the lower end of the slot of the recovery pipe (2), and a bearing groove is opened at the middle of the upper end of the filter pipe (202); three positioning slots are fixedly installed at the lower end of the filter pipe (202). Block (203); A baffle (204) is fixedly installed on the left end of the inner wall of the filter tube (202); A fixing ring (205) is fixedly installed on the right end of the inner wall of the filter tube (202), and a threaded groove is opened on the side wall of the fixing ring (205); A filter screen (206) is installed on the right side wall of the fixing ring (205), and a screw is inserted into the edge of the filter screen (206); A heat exchanger (3) is installed on the right end of the recovery pipe (2), and two rows of threaded grooves are opened on the upper end of the left side wall of the heat exchanger (3); A pipe hole is opened on the left side wall of the heat exchanger (3).

2. The preheating and recovery device for the biomass gasification furnace according to claim 1, characterized in that: A support plate (101) is fixedly installed on the upper right end of the gasifier (1), and a through threaded hole is opened in the middle of the support plate (101).

3. The preheating and recovery device for the biomass gasification furnace according to claim 2, characterized in that: The support plate (101) has four through guide holes (102). The right end of the support plate (101) is fixedly installed with mutually symmetrical stabilizing bars (103), and four through bolts are rotatably installed on the stabilizing bars (103).

4. The preheating and recovery device for the biomass gasification furnace according to claim 1, characterized in that: The upper ends of the filter tube (202) are respectively fixedly installed with connecting plates (207), and the upper ends of the connecting plates (207) are fixedly installed with limiting plates (208).

5. The preheating and recovery device for the biomass gasification furnace according to claim 4, characterized in that: The upper ends of the two limiting plates (208) are respectively fixedly installed with mutually symmetrical guide rods (209), and the upper end of the filter tube (202) is rotatably installed with a bearing ring (210) at the bearing groove.

6. The preheating and recovery device for a biomass gasification furnace according to claim 5, characterized in that: A vertically upward adjusting rod (211) is fixedly installed in the inner ring of the bearing ring (210), and the annular sidewall of the adjusting rod (211) is threaded, and a short column is fixedly installed at the upper end of the adjusting rod (211).

7. The preheating and recovery device for a biomass gasification furnace according to claim 1, characterized in that: A protective net (301) is installed at the upper port of the heat exchanger (3), and through delivery pipes (302) are evenly inserted on the right side wall of the heat exchanger (3).

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