Biomass wood chip burner of 15 million kilocalories

Abstract

The utility model provides a biomass wood chip burner of 15,000,000 kilocalories, which relates to the technical field of biomass wood chip burners, and comprises a burner box body, a hearth is arranged in the burner box body, and a fire hole outer pipe is arranged on one side of the burner box body; the combustion assembly is arranged between the combustor box body and the fire hole outer pipe and is used for improving the combustion efficiency of biomass; and the air supply assembly is arranged on one side of the combustion engine box body and used for reducing the temperature of equipment. According to the biomass wood chip burner, through the arrangement of the burning assembly, the flame rotation speed can be increased, the retention time of carbon monoxide in a high-temperature area is prolonged, the burning efficiency is improved, through the arrangement of the air supply assembly, the hearth temperature can be reduced, and the overall service life of equipment can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass wood chip burners, in particular to a 15 million kcal biomass wood chip burner. Background Art

[0002] Biomass wood chip burner is a thermal energy equipment specially designed for burning biomass fuel. It realizes efficient and clean combustion process by semi-gasification or high-temperature cracking of biomass, and converts the chemical energy in biomass into thermal energy.

[0003] However, the existing biomass wood chip burners still have certain defects when in use. For example, when the existing biomass wood chip burners are in use, if the combustion of biomass is not sufficient, a large amount of carbon monoxide will be generated inside the burner. If the carbon monoxide is directly discharged, it will not only cause energy loss, but also cause environmental pollution and pose a potential threat to human health. Utility Model Content

[0004] The utility model aims to solve the shortcomings existing in the background technology and provides a 15 million kcal biomass wood chip burner. To solve the above problems, the setting of the combustion component can accelerate the flame rotation speed, prolong the residence time of carbon monoxide in the high temperature zone, improve the combustion efficiency, and the setting of the air supply component can reduce the furnace temperature and extend the overall service life of the equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 15 million kcal biomass wood chip burner, comprising: a burner housing, a furnace is provided inside the burner housing, a burner outer tube is provided on one side of the burner housing, a combustion component arranged between the burner housing and the burner outer tube, which is used to improve the combustion efficiency of biomass, and an air supply component arranged on one side of the burner housing, which is used to reduce the temperature of the equipment.

[0006] Furthermore, the combustion assembly includes: a reciprocating grate in the gasification zone arranged inside the furnace, a reciprocating grate in the combustion zone is provided inside the burner case, an equipment cavity is opened inside the burner case, a secondary fan is arranged on the top of the burner case, a secondary air duct is opened on one side of the inner wall of the furnace, a secondary air duct is connected to one side of the secondary fan, one end of the secondary air duct is connected to the burner case, an inner fire port tube is provided inside the furnace, and one end of the inner fire port tube extends into the outer fire port tube, a plurality of cyclone guide vanes are provided between the inner fire port tube and the outer fire port tube, a conical guide duct is provided inside the outer fire port tube, a primary fan is arranged on one side of the burner case, a flue gas pipe is connected to one side of the burner case, an air volume adjustment door is provided at one end of the flue gas pipe, and the primary fan is connected to the burner case through the flue gas pipe.

[0007] Furthermore, a diesel ignition device is provided on one side of the inner wall of the furnace, a temperature sensor a is provided on one side of the inner wall of the furnace, a gasification zone observation port is provided on one side of the temperature sensor a, a negative pressure sensor is provided on one side of the inner wall of the furnace, a temperature sensor b is provided on one side of the negative pressure sensor, a combustion zone observation port is provided on one side of the inner wall of the furnace, a plurality of air adjustment and ash cleaning doors are provided on one side of the burner case, and a slag discharge port is provided on one side of the burner case.

[0008] Furthermore, a hydraulic cylinder a is provided inside the equipment cavity, and one end of the hydraulic cylinder a extends into the furnace and is connected to the reciprocating grate in the combustion zone. A hydraulic cylinder b is provided inside the equipment cavity, and one end of the hydraulic cylinder b extends into the furnace and is connected to the reciprocating grate in the gasification zone.

[0009] Furthermore, a backfire smoke pipe is connected to one side of the primary fan, one end of the backfire smoke pipe is connected to a primary air inlet pipe via a three-way pipe, and one end of the backfire smoke pipe is connected to a chimney exhaust pipe via a three-way pipe.

[0010] Furthermore, a feed pipe is provided on the top of the combustion machine box, an upper flap is provided inside the feed pipe, a lower flap is provided inside the feed pipe, and the lower flap is located below the upper flap, and a refractory brick insulation wall is provided inside the furnace.

[0011] Furthermore, the air supply assembly includes: a side sealed cooling air duct arranged inside the furnace, a side sealed cooling fan arranged on one side of the burner case, a cold air guide pipe connected to one side of the side sealed cooling fan, one end of the cold air guide pipe is fixedly connected to the side sealed cooling air duct, and a section of the side sealed cooling air duct passes through one side of the burner case and is connected to a dust filter.

[0012] The utility model provides a 15 million kcal biomass wood chip burner, which has the following beneficial effects:

[0013] The utility model has the advantages that, through the setting of the combustion assembly, the grate can be divided into two levels, namely the gasification zone and the burnout zone, and can be operated independently, so as to facilitate the adjustment of the gasification ratio and the combustion state. At the same time, the conical guide pipe can improve the mixing effect of the secondary air, the flame and the combustible gas, accelerate the flame rotation speed, prolong the residence time of carbon monoxide in the high temperature zone, improve the combustion efficiency, and can reduce the initial emission value of NOX by means of the primary fan and the backfire flue gas pipe;

[0014] Secondly, through the setting of the air supply component, the temperature of the burner box can be reduced through the side sealed cooling fan and the side sealed cooling air duct, thereby extending the overall service life of the equipment. At the same time, the temperature in the furnace can also be monitored to ensure that the temperature in the furnace is not too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a sectional view of the overall structure of the utility model.

[0017] Figure 3 It is a cross-sectional schematic diagram of the inner tube structure of the burner of the utility model.

[0018] Figure 4 This is a cross-sectional view of the equipment cavity structure of the utility model.

[0019] Figure 5 It is a cross-sectional view of the furnace structure of the present utility model.

[0020] Figure 6 This is a schematic diagram of the combustion machine case structure of the utility model.

[0021] Figure 7 It is a top view of the combustion machine case structure of the utility model.

[0022] Figure 8 For the utility model Figure 3 Enlarged view of point A in .

[0023] Figure 1-8 Middle: 1. Burner housing; 101. Feeding pipe; 102. Upper flap; 103. Lower flap; 2. Reciprocating grate in gasification zone; 201. Hydraulic cylinder a; 202. Reciprocating grate in burning zone; 203. Diesel ignition device; 204. Air adjustment and ash cleaning door; 205. Observation port in gasification zone; 206. Temperature sensor a; 207. Hydraulic cylinder b; 208. Slag discharge port; 3. Secondary fan; 301. Secondary air duct; 302. Secondary air duct; 4. Primary fan; 401. Smoke pipe; 402, backfire smoke pipe; 403, primary air inlet pipe; 404, air volume adjustment door; 5, negative pressure sensor; 501, temperature sensor b; 502, combustion zone observation port; 6, burner inner pipe; 601, cyclone guide vane; 7, burner outer pipe; 701, conical guide pipe; 8, side sealed cooling fan; 801, cold air guide pipe; 802, side sealed cooling air duct; 803, dust filter; 9, furnace; 901, equipment cavity; 902, refractory brick insulation wall. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0025] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0026] The embodiment of the present application provides a 15 million kcal biomass wood chip burner, which can accelerate the flame rotation speed, prolong the residence time of carbon monoxide in the high temperature zone, improve the combustion efficiency through the setting of the combustion component, and can reduce the furnace temperature and extend the overall service life of the equipment through the setting of the air supply component. The 15 million kcal biomass wood chip burner is described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0027] The present application is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] See also Figure 1-8 In the embodiment, a 15 million kcal biomass wood chip burner is provided, comprising: a burner housing 1, a furnace 9 is provided inside the burner housing 1, a burner outer tube 7 is provided on one side of the burner housing 1; a combustion component arranged between the burner housing 1 and the burner outer tube 7, for improving the combustion efficiency of biomass; and an air supply component arranged on one side of the burner housing 1, for reducing the temperature of the equipment.

[0030] Among them, by setting the combustion assembly, the grate can be divided into two levels, namely the gasification zone and the burnout zone, for independent operation, which is convenient for adjusting the gasification ratio and the combustion state. At the same time, the conical guide pipe 701 can improve the mixing effect of the secondary air, the flame and the combustible gas, accelerate the flame rotation speed, prolong the residence time of carbon monoxide in the high temperature zone, improve the combustion efficiency, and reduce the initial emission value of NOX by means of the primary fan 4 and the backfire flue gas pipe 402;

[0031] Secondly, through the setting of the air supply component, the temperature of the combustion machine box 1 can be reduced through the side sealed cooling fan 8 and the side sealed cooling air duct 802, thereby extending the overall service life of the equipment. At the same time, the temperature inside the furnace 9 can also be monitored to ensure that the temperature inside the furnace 9 is not too low.

[0032] Example 2

[0033] On the basis of Example 1, the combustion assembly includes: a gasification zone reciprocating grate 2 arranged inside the furnace 9, a combustion zone reciprocating grate 202 is arranged inside the combustion machine housing 1, and an equipment cavity 901 is opened inside the combustion machine housing 1; a secondary fan 3 is arranged on the top of the combustion machine housing 1, a secondary air duct 302 is opened on one side of the inner wall of the furnace 9, a secondary air duct 301 is connected to one side of the secondary fan 3, one end of the secondary air duct 301 is connected to the combustion machine housing 1, a burner inner tube 6 is arranged inside the furnace 9, and one end of the burner inner tube 6 extends into the burner outer tube 7, a plurality of cyclone guide vanes 601 are arranged between the burner inner tube 6 and the burner outer tube 7, and a conical guide tube 701 is arranged inside the burner outer tube 7; a primary fan 4 is arranged on one side of the combustion machine housing 1, a flue gas pipe 401 is connected to one side of the combustion machine housing 1, and an air volume regulating device is provided at one end of the flue gas pipe 401 A door 404 is provided, and a primary fan 4 is connected to the burner housing 1 through a flue gas pipe 401; a diesel ignition device 203 is provided on one side of the inner wall of the furnace 9, a temperature sensor a206 is provided on one side of the inner wall of the furnace 9, a gasification zone observation port 205 is provided on one side of the temperature sensor a206, a negative pressure sensor 5 is provided on one side of the inner wall of the furnace 9, a temperature sensor b501 is provided on one side of the negative pressure sensor 5, a combustion zone observation port 502 is provided on one side of the inner wall of the furnace 9, a plurality of air adjustment and ash cleaning doors 204 are provided on one side of the burner housing 1, a slag discharge port 208 is provided on one side of the burner housing 1, through the setting of the combustion zone observation port 502, it is possible to observe whether there is an open flame on the reciprocating grate 202 in the burnout zone, through the setting of the gasification zone observation port 205, it is possible to observe whether there is an open flame on the reciprocating grate 2 in the gasification zone, and through the setting of the slag discharge port 208, the ash in the furnace 9 can be cleared away.

[0034] Among them, a hydraulic cylinder a201 is provided inside the equipment cavity 901, and one end of the hydraulic cylinder a201 extends into the furnace 9 and is connected to the reciprocating grate 202 in the combustion zone, a hydraulic cylinder b207 is provided inside the equipment cavity 901, and one end of the hydraulic cylinder b207 extends into the furnace 9 and is connected to the reciprocating grate 2 in the gasification zone; a backfire smoke pipe 402 is connected to one side of the primary fan 4, one end of the backfire smoke pipe 402 is connected to the primary air inlet pipe 403 through a three-way pipe, and one end of the backfire smoke pipe 402 is connected to the chimney exhaust pipe through a three-way pipe; a feed pipe 101 is provided on the top of the burner housing 1, an upper flap 102 is provided inside the feed pipe 101, a lower flap 103 is provided inside the feed pipe 101, and the lower flap 103 is located below the upper flap 102, and a refractory brick insulation wall 902 is provided inside the furnace 9.

[0035] When in use, biomass wood chips are fed into the lower feeding pipe 101, so that the biomass wood chips pass through the upper flap 102 and the lower flap 103, enter the furnace 9, and fall on the top of the reciprocating grate 2 in the gasification zone. When the biomass wood chips are accumulated to a thickness of more than 60MM, the hydraulic cylinder b207 can be started to push the reciprocating grate 2 in the gasification zone, and some wood chip fuel is pushed onto the reciprocating grate 202 in the burnout zone. At this time, the feeding is stopped, and then the diesel ignition device 203 is started for ignition. After the ignition is successful, the primary fan 4 is turned on to blow air into the furnace 9 through the primary fan 4, the primary air inlet pipe 403 and the flue gas pipe 401 to accelerate the combustion of the biomass wood chips.

[0036] Furthermore, the secondary fan 3 is turned on to blow air into the furnace 9 through the secondary fan 3 and the secondary air duct 301. At this time, the secondary air generated by the secondary fan 3 will enter the furnace 9 through the secondary air duct 301 and the secondary air duct 302. Since there is a gap of 100MM between the inner tube 6 of the burner and the secondary air duct 302, the secondary air passes through the gap, passes through multiple cyclone guide vanes 601 and enters the inner tube 7 of the burner. In this process, the secondary air rotates at a high speed and drives the flame and carbon monoxide entering the inner tube 6 of the burner to flow along the inner tube 6 toward the outer tube 7 of the burner. Then, through the conical guide tube 701, the flame of the primary combustion, the secondary air and the carbon monoxide are introduced into the inner tube 7 of the burner for sufficient mixing and combustion, thereby improving the combustion efficiency.

[0037] When the fuel in the furnace 9 begins to burn, the staff can control the temperature in the reciprocating grate 202 area of ​​the burnout zone to below 900 degrees Celsius through the temperature sensor b501, or control the temperature in the reciprocating grate 2 area of ​​the gasification zone to around 600 degrees Celsius through the temperature sensor a206. By setting the negative pressure sensor 5, the negative pressure state of the furnace 9 can be detected to ensure the stable semi-gasification combustion.

[0038] In addition, when the biomass wood chips are burned at high temperature, the flame of the high temperature combustion will increase the generation of NOX, so an air volume regulating door 404 is set on one side of the flue gas pipe 401. When the flue gas in the chimney exhaust pipe is introduced into the furnace 9 through the primary fan 4 and the flue gas pipe 401, the staff can adjust the mixing ratio of the flue gas through the air volume regulating door 404. Part of the flue gas can reduce the average oxygen content of the air. When the oxygen content is reduced to 9%, the flame temperature is reduced, and the corresponding NOX will also be reduced.

[0039] Example 3

[0040] On the basis of Example 1, the air supply assembly includes: a side sealed cooling air duct 802 arranged inside the furnace 9; a side sealed cooling fan 8 arranged on one side of the burner case 1, and a cold air guide pipe 801 is connected to one side of the side sealed cooling fan 8, one end of the cold air guide pipe 801 is fixedly connected to the side sealed cooling air duct 802, and a section of the side sealed cooling air duct 802 passes through one side of the burner case 1 and is connected to a dust filter 803.

[0041] When the burner is working, the staff can start the side sealed cooling fan 8, and generate cold air through the side sealed cooling fan 8, so that the cold air enters the side sealed cooling air duct 802 through the cold air guide pipe 801, and blows away the heat transferred to the side sealed cooling air duct 802 during biomass combustion from one end of the side sealed cooling air duct 802, so as to dissipate heat for the equipment, thereby improving the service life of the equipment. In addition, through the setting of the dust filter 803, the dust in the air can be filtered to prevent dust from accumulating inside the side sealed cooling air duct 802, and the temperature sensor b501 and the temperature sensor a206 are electrically connected to the side sealed cooling fan 8 respectively. When the temperature sensor b501 and the temperature sensor a206 detect that the temperature in the furnace 9 is too low, the temperature sensor b501 and the temperature sensor a206 generate an electrical signal and transmit it to the side sealed cooling fan 8, thereby changing the output power of the side sealed cooling fan 8, thereby controlling the temperature in the furnace 9.

[0042] In addition, a control panel is provided on the outside of the combustion machine housing 1, which can control the start and stop of the hydraulic cylinder a201, the secondary fan 3, the primary fan 4 and the side sealing cooling fan 8, and the electric energy of the combustion machine is provided by an external power supply.

[0043] The control program involved in the present utility model can be implemented by those skilled in the art according to the same or similar principles in the prior art, and this part is not the innovation of the present utility model.

[0044] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0045] The above is a detailed introduction to a 15 million kcal biomass wood chip burner provided in an embodiment of the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A 15 million kcal biomass wood chip burner, characterized in that: include: A combustion machine housing (1), wherein a furnace (9) is provided inside the combustion machine housing (1), and a burner outer tube (7) is provided on one side of the combustion machine housing (1); A combustion assembly disposed between the combustion machine housing (1) and the burner outer tube (7) is used to improve the combustion efficiency of biomass, and the combustion assembly comprises: A gasification zone reciprocating grate (2) is arranged inside the furnace (9), a burnout zone reciprocating grate (202) is arranged inside the combustion machine housing (1), and an equipment cavity (901) is opened inside the combustion machine housing (1); A secondary fan (3) is arranged on the top of the burner housing (1), a secondary air duct (302) is provided on one side of the inner wall of the furnace (9), a secondary air duct (301) is connected to one side of the secondary fan (3), one end of the secondary air duct (301) is connected to the burner housing (1), a burner inner tube (6) is provided inside the furnace (9), and one end of the burner inner tube (6) extends into the burner outer tube (7), a plurality of cyclone guide vanes (601) are provided between the burner inner tube (6) and the burner outer tube (7), and a conical guide tube (701) is provided inside the burner outer tube (7); a primary fan (4) arranged on one side of the burner housing (1), a smoke pipe (401) being connected to one side of the burner housing (1), an air volume adjustment door (404) being provided at one end of the smoke pipe (401), and the primary fan (4) being connected to the burner housing (1) via the smoke pipe (401); A hydraulic cylinder a (201) is provided inside the equipment cavity (901), and one end of the hydraulic cylinder a (201) extends into the furnace (9) and is connected to the reciprocating grate (202) in the combustion zone; a hydraulic cylinder b (207) is provided inside the equipment cavity (901), and one end of the hydraulic cylinder b (207) extends into the furnace (9) and is connected to the reciprocating grate (2) in the gasification zone; One side of the primary fan (4) is connected to a backfire smoke pipe (402), one end of the backfire smoke pipe (402) is connected to a primary air intake pipe (403) via a tee pipe, and one end of the backfire smoke pipe (402) is connected to a chimney smoke exhaust pipe via a tee pipe; and An air supply component arranged on one side of the combustion machine housing (1) is used to reduce the temperature of the equipment.

2. The 15 million kcal biomass wood chip burner according to claim 1, characterized in that: A diesel ignition device (203) is provided on one side of the inner wall of the furnace (9), a temperature sensor a (206) is provided on one side of the inner wall of the furnace (9), a gasification zone observation port (205) is provided on one side of the temperature sensor a (206), a negative pressure sensor (5) is provided on one side of the inner wall of the furnace (9), a temperature sensor b (501) is provided on one side of the negative pressure sensor (5), a combustion zone observation port (502) is provided on one side of the inner wall of the furnace (9), a plurality of air adjustment and ash cleaning doors (204) are provided on one side of the burner housing (1), and a slag discharge port (208) is provided on one side of the burner housing (1).

3. The 15 million kcal biomass wood chip burner according to claim 1, characterized in that: A feed pipe (101) is provided on the top of the combustion machine housing (1), an upper flap (102) is provided inside the feed pipe (101), a lower flap (103) is provided inside the feed pipe (101), and the lower flap (103) is located below the upper flap (102), and a refractory brick insulation wall (902) is provided inside the furnace (9).

4. The 15 million kcal biomass wood chip burner according to claim 1, characterized in that: The air supply assembly comprises: A side-sealed cooling air duct (802) disposed inside the furnace (9); A side sealed cooling fan (8) is arranged on one side of the burner housing (1), and a cold air guide pipe (801) is connected to one side of the side sealed cooling fan (8), one end of the cold air guide pipe (801) is fixedly connected to the side sealed cooling air pipe (802), and a section of the side sealed cooling air pipe (802) passes through one side of the burner housing (1) and is connected to a dust filter (803).

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