Tar re-burning device of biomass gas boiler

Abstract

The utility model discloses a biomass gas boiler tar re-burning device which comprises a boiler, a burning assembly is arranged in the middle of the left side of the boiler, the burning assembly penetrates through the boiler wall of the boiler and extends into the boiler, a collecting platform is arranged below the burning assembly, and the collecting platform is connected with a compressed air pipe. The other end of the compressed air pipe is connected with an air blower, a cooling jacket is arranged on the right side of the boiler, the bottom of the cooling jacket is connected with a cooling water outlet pipe, the other end of the cooling water outlet pipe is connected with a cooling water pump, and the right side of the cooling water pump is connected with a cooling water inlet pipe. The other end of the cooling water inlet pipe is connected with a cooling water pond, the top of the cooling jacket is connected with a cooling water return pipe, and the tail end of the cooling water return pipe is connected with the top of the cooling water pond. According to the utility model, the problems in the prior art can be effectively solved, the production requirements are met, and better economic benefits are created.

Description

Technical Field

[0001] The utility model belongs to the field of boilers, and in particular relates to a tar re-burning device for a biomass gas boiler. Background Art

[0002] Biomass gas is a combustible gas energy source that uses crop straw, forest waste, edible fungus residue, livestock manure and all combustible materials as raw materials. After research and development by relevant technical personnel, the technology of biomass gas boilers is relatively mature at present, but there are still some problems in actual production. For example: 1. Biomass gas contains tar, which cannot be completely burned. The unburned tar will flow out of the burner port in the boiler and enter the furnace, thereby corroding the furnace body. 2. After the biomass gas boiler has been running for a period of time, it needs to be stopped for maintenance, but due to the high temperature of the furnace body and slow cooling, the speed of maintenance operations is affected, thereby affecting production efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the inventors have developed a biomass gas boiler tar re-burning device based on their own practical experience.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a biomass gas boiler tar re-burning device, comprising a boiler, a combustion assembly is provided in the middle of the left side of the boiler, the combustion assembly penetrates the boiler furnace wall and extends to the inside of the boiler, a collecting platform is provided below the combustion assembly, the collecting platform is connected to a compressed air pipe, the other end of the compressed air pipe is connected to a blower, a cooling jacket is provided on the right side of the boiler, a cooling water outlet pipe is connected to the bottom of the cooling jacket, the other end of the cooling water outlet pipe is connected to a cooling water pump, a cooling water inlet pipe is connected to the right side of the cooling water pump, the other end of the cooling water inlet pipe is connected to a cooling water pool, a cooling water return pipe is connected to the top of the cooling jacket, and the end of the cooling water return pipe is connected to the top of the cooling water pool.

[0005] Furthermore, the combustion assembly includes a longitudinal portion and a transverse portion, a threaded hole is provided at the right end of the transverse portion, a reducing hole is installed at the left side of the threaded hole, a combustion tube is connected to the threaded hole, the tail of the combustion tube faces upward, and the number of the combustion tubes is at least 3. The longitudinal portion is connected to a gas source of biomass gas.

[0006] Furthermore, the left end of the combustion tube is provided with a thread, and the combustion tube is connected to the threaded hole through the thread. When the combustion tubes are installed, the uppermost combustion tube is installed first, and then installed from top to bottom, and the length of the combustion tubes gradually increases from top to bottom.

[0007] Furthermore, an automatic control valve is installed on the compressed air pipe, the compressed air pipe passes through the collection platform upward, the top of the compressed air pipe is connected to a distribution hole, the collection platform is "concave", the angle between the "concave" inclined surface and the horizontal plane is α, 8°≤α≤60°. The collection platform is a solid body, and unburned tar drips on the concave surface of the collection platform. The compressed air in the blower is ejected from the distribution hole through the compressed air pipe, thereby blowing the tar on the concave surface of the collection platform into the furnace body, so that the tar is secondary burned.

[0008] Furthermore, the variable diameter hole is a structure that is narrow in the middle and wide on both sides, and the diameter of the right end of the variable diameter hole is smaller than the diameter of the left end. The setting of the variable diameter hole can effectively increase the speed of the biomass gas, thereby improving the combustion efficiency.

[0009] Furthermore, the cooling water inlet pipe is provided with a water inlet valve, the cooling water outlet pipe is provided with a water outlet valve, and the cooling water return pipe is provided with a water return valve.

[0010] Furthermore, a drain pipe is connected to the bottom of the cooling jacket, a drain valve is provided on the drain pipe, and the drain pipe is located on the right side of the cooling water outlet pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects: 1. By setting a collection platform under the existing combustion assembly, unburned tar drips onto the collection platform, and then the compressed air in the compressed air pipe is blown into the furnace body for secondary combustion. At the same time, the inventor adds a variable diameter hole in the combustion assembly, which can effectively increase the biomass gas flow rate, thereby making the biomass gas burn more fully, reducing the generation of tar, and avoiding tar corrosion of the furnace body.

[0012] The inventor has set a cooling jacket on the right side of the boiler. When the boiler needs to be repaired, the cooling water pump can be started, and the cooling water enters the cooling jacket from the cooling water tank, so that the boiler can be effectively cooled in a shorter time, thereby speeding up the repair work and meeting the next production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 A schematic diagram of the combustion assembly.

[0015] Figure 3 Schematic diagram of the combustion tube and threaded hole.

[0016] Figure 4 Schematic diagram of the collection platform and compressed air pipe.

[0017] Figure 5 This is an enlarged schematic diagram of part A.

[0018] Figure numerals: 1. boiler, 2. combustion assembly, 201. longitudinal part, 202. transverse part, 203. reducing hole, 204. combustion tube, 205. thread, 206. threaded hole, 3. cooling jacket, 4. collecting platform, 5. blower, 6. compressed air pipe, 601. distribution hole, 7. automatic control valve, 8. cooling water pump, 9. cooling water tank, 10. cooling water inlet pipe, 11. water inlet valve, 12. cooling water outlet pipe, 13. water outlet valve, 14. drain pipe, 15. drain valve, 16. cooling water return pipe, 17. return valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] like Figure 1 — Figure 5 As shown, a tar re-burning device for a biomass gas boiler comprises a boiler 1, a combustion assembly 2 is provided in the middle of the left side of the boiler 1, the combustion assembly 2 penetrates the furnace wall of the boiler 1 and extends to the inside of the boiler 1, a collecting platform 4 is provided below the combustion assembly 2, the collecting platform 4 is connected to a compressed air pipe 6, the other end of the compressed air pipe 6 is connected to a blower 5, a cooling jacket 3 is provided on the right side of the boiler 1, a cooling water outlet pipe 12 is connected to the bottom of the cooling jacket 3, the other end of the cooling water outlet pipe 12 is connected to a cooling water pump 8, a cooling water inlet pipe 10 is connected to the right side of the cooling water pump 8, the other end of the cooling water inlet pipe 10 is connected to a cooling water pool 9, a cooling water return pipe 16 is connected to the top of the cooling jacket 3, and the end of the cooling water return pipe 16 is connected to the top of the cooling water pool 9.

[0021] In this embodiment, the combustion assembly 2 includes a longitudinal portion 201 and a transverse portion 202, a threaded hole 206 is provided at the right end of the transverse portion 202, a reducing hole 203 is installed on the left side of the threaded hole 206, a combustion tube 204 is connected to the threaded hole 203, the tail of the combustion tube 204 faces upward, and the number of the combustion tubes 204 is at least 3. The longitudinal portion 201 is connected to the gas source of biomass gas.

[0022] In this embodiment, the left end of the combustion tube 204 is provided with a thread 205, and the combustion tube 204 is connected to the threaded hole 206 through the thread 205. When the combustion tubes 204 are installed, the uppermost combustion tube 204 is installed first, and then installed from top to bottom, and the length of the combustion tubes 204 gradually increases from top to bottom.

[0023] In this embodiment, an automatic control valve 7 is installed on the compressed air pipe 6, and the compressed air pipe 6 passes through the collection platform 4 upward. The top of the compressed air pipe 6 is connected to a distribution hole 601. The collection platform 4 is "concave" shaped, and the angle between the "concave" inclined surface and the horizontal plane is α, 8°≤α≤60°. The collection platform 4 is a solid body, and unburned tar drips on the concave surface of the collection platform 4. The compressed air in the blower 5 is ejected from the distribution hole 601 through the compressed air pipe 6, thereby blowing the tar on the concave surface of the collection platform 4 into the furnace body, so that the tar is secondary burned.

[0024] In this embodiment, the variable diameter hole 203 is narrow in the middle and wide on both sides, and the right end of the variable diameter hole 203 has a smaller diameter than the left end. The setting of the variable diameter hole 203 can effectively increase the speed of the biomass gas, thereby improving the combustion efficiency.

[0025] In this embodiment, the cooling water inlet pipe 10 is provided with a water inlet valve 11 , the cooling water outlet pipe 12 is provided with a water outlet valve 13 , and the cooling water return pipe 16 is provided with a water return valve 17 .

[0026] In this embodiment, a drain pipe 14 is further connected to the bottom of the cooling jacket 3 , and a drain valve 15 is provided on the drain pipe 14 . The drain pipe 14 is located on the right side of the cooling water outlet pipe 12 .

[0027] When the device is used, first check whether the blower 5 is working properly, then open the automatic control valve 7, and the tar dripping on the collection platform 4 is blown into the furnace body by compressed air for secondary combustion. The setting of the distribution holes 601 can make the tar evenly distributed when it is blown away, which is more conducive to the combustion of the tar. At the same time, the biomass gas passes through the variable diameter hole 203 in the combustion component 2, and the air flow rate increases, so that the biomass gas burns more fully, reduces the generation of tar, and avoids tar from corroding the furnace body. After long-term observation and operation by the inventor, it is found that the tar on the collection platform 4 needs to be purged once every 8 hours to meet production needs.

[0028] After the boiler has been running for a period of time, it is necessary to stop the operation of the boiler for maintenance. At this time, the water inlet valve 11, the water outlet valve 13 and the return valve 17 are opened in sequence, and the cooling water pump 8 is started. The cooling water enters the cooling jacket 3 through the cooling water inlet pipe 10 and the cooling water outlet pipe 12 to cool the furnace body, and then flows back to the cooling water pool 9 through the cooling water return pipe 16. After the furnace body is cooled, the cooling water pump 8 is turned off, and the on-site operator can perform maintenance work on the furnace body. After the maintenance work is completed, the drain valve on the drain pipe 14 is opened to drain the cooling water in the cooling jacket 3.

[0029] It should be noted that, 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 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 a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although two embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and combinations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biomass gas boiler tar re-burning device, characterized in that: A boiler is included, wherein a combustion assembly is provided at the middle portion of the left side of the boiler, the combustion assembly penetrates the boiler furnace wall and extends to the inside of the boiler, a collecting platform is provided below the combustion assembly, the collecting platform is connected to a compressed air pipe, the other end of the compressed air pipe is connected to a blower, a cooling jacket is provided on the right side of the boiler, a cooling water outlet pipe is connected to the bottom of the cooling jacket, the other end of the cooling water outlet pipe is connected to a cooling water pump, a cooling water inlet pipe is connected to the right side of the cooling water pump, the other end of the cooling water inlet pipe is connected to a cooling water pool, a cooling water return pipe is connected to the top of the cooling jacket, and the end of the cooling water return pipe is connected to the top of the cooling water pool.

2. The tar re-burning device for a biomass gas boiler according to claim 1, characterized in that: The combustion assembly includes a longitudinal portion and a transverse portion, a threaded hole is provided at the right end of the transverse portion, a reducing hole is installed on the left side of the threaded hole, a combustion tube is connected to the threaded hole, the tail of the combustion tube faces upward, and the number of the combustion tubes is at least 3.

3. The tar re-burning device for a biomass gas boiler according to claim 2, characterized in that: The left end of the combustion tube is provided with a thread, and the combustion tube is connected with the threaded hole through the thread.

4. The tar re-burning device for a biomass gas boiler according to claim 1, characterized in that: An automatic control valve is installed on the compressed air pipe, and the compressed air pipe passes through the collection platform upward. The top of the compressed air pipe is connected with distribution holes. The collection platform is "concave" shaped, and the angle between the "concave" inclined surface and the horizontal plane is α, 8°≤α≤60°.

5. The tar re-burning device for a biomass gas boiler according to claim 2, characterized in that: The variable diameter hole is a structure that is narrow in the middle and wide on both sides, and the diameter of the right end of the variable diameter hole is smaller than the diameter of the left end.

6. The tar re-burning device for a biomass gas boiler according to claim 1, characterized in that: The cooling water inlet pipe is provided with a water inlet valve, the cooling water outlet pipe is provided with a water outlet valve, and the cooling water return pipe is provided with a water return valve.

7. The tar re-burning device for a biomass gas boiler according to claim 1, characterized in that: The bottom of the cooling jacket is also connected to a sewage pipe, on which a sewage valve is arranged, and the sewage pipe is located on the right side of the cooling water outlet pipe.

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