Water-cooled wall steam boiler for burning biomass gas

Abstract

The utility model relates to a water-cooled wall steam boiler for burning biomass gas, which belongs to the technical field of steam boilers and comprises a base and a steam boiler body fixedly connected to the top of the base. The flue gas dust removal device comprises a flue gas dust removal box arranged on one side of the steam boiler body. According to the biomass gas fired water-cooled wall steam boiler, by arranging the smoke exhaust pipe and the smoke dust removal box, smoke generated during combustion can be exhausted into the smoke dust removal box, by arranging the dust removal filter bag, dust in the smoke can be filtered, then clean smoke is exhausted through the smoke exhaust pipe, and by arranging the collecting hopper, dust in the smoke can be removed. Dust in smoke can be collected in a unified mode, workers can conveniently collect and treat the dust in the follow-up process, a large amount of dust is prevented from being attached to the interior of the smoke exhaust pipeline, the number of workers for maintaining the smoke exhaust pipeline is reduced, and meanwhile the smoke can be pretreated.

Description

Technical Field

[0001] The utility model relates to the technical field of steam boilers, in particular to a biomass gas-fired water-cooled wall steam boiler. Background Technique

[0002] A steam boiler refers to a boiler device for producing steam. It belongs to special equipment, and its design, production, factory, and installation must be supervised by the national technical supervision department. Users need to obtain a boiler use certificate to operate the boiler. The steam boiler generates heat through fuel combustion, heats water to the boiling state, and thus produces steam. The main raw material sources of biomass energy are agricultural and forestry waste, furniture and building materials waste, and building formwork waste. According to the requirements of the latest environmental protection specifications, it cannot be directly burned. It either needs to be processed into biomass formed particles or converted into combustible biomass gas by gasification technology and used as fuel for industrial boilers.

[0003] The Chinese utility model patent with the publication number of CN219656035U discloses a biomass-fired water-tube steam boiler, which includes an upper drum and a lower drum. A heat exchange chamber is arranged between the upper drum and the lower drum. One end of the heat exchange chamber is provided with a combustion chamber. A chain grate is installed at the bottom of the combustion chamber. The inner wall of the combustion chamber is provided with a heat preservation layer. A front arch is arranged on one side of the combustion chamber, and a rear arch is arranged on the other side. A secondary air duct is installed on the inner wall of the front arch. A hopper is arranged at one end of the combustion chamber. A plurality of air adjustment openings are arranged on the bottom side wall of the chain grate. In this utility model, the front and rear water-cooled wall tubes of the combustion chamber extend downward to the upper part of the grate to form the front and rear arches, increasing the radiation heating surface of the combustion chamber on the basis of the unchanged other heating areas, and having a stronger overload capacity; the front and rear arches are made of water-cooled wall tubes as the framework and cast with high-alumina cement, thus avoiding the disadvantages of the original boiler's three-fold line arch bricks cracking and collapsing due to long-term high-temperature roasting, and thus extending the service life of the arch.

[0004] However, during the use of this utility model, when the biomass fuel in the combustion chamber burns, a large amount of flue gas will be produced. These flue gases will enter the inside of the smoke tube and then be discharged. And a large amount of dust generated during biomass combustion will be mixed in the flue gases. Furthermore, this utility model cannot pre-treat the dust, resulting in excessive accumulation of soot in the exhaust pipe, increasing the maintenance difficulty of the staff and not meeting the production requirements. Therefore, a biomass gas-fired water-cooled wall steam boiler is proposed to solve the problems raised above. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a biomass gas-fired water-cooled wall steam boiler, which has the advantage of being convenient for pre-treating dust in flue gas, and solves the problem that when biomass fuel burns inside the combustion chamber, a large amount of flue gas will be produced, and these flue gases will enter the inside of the flue pipe and then be discharged. However, a large amount of dust during biomass combustion will be mixed in the flue gas. As a result, the utility model cannot pre-treat the dust, leading to excessive accumulation of soot inside the exhaust pipe, increasing the maintenance difficulty for workers and not meeting the production requirements.

[0006] To achieve the above object, the utility model provides the following technical solution: A biomass gas-fired water-cooled wall steam boiler, including a base and a steam boiler body fixedly connected to the top of the base, and a flue gas dust removal device for removing dust from the flue gas is provided on one side of the steam boiler body;

[0007] The flue gas dust removal device includes a flue gas dust removal box provided on one side of the steam boiler body. A smoke exhaust pipe is fixedly connected between the flue gas dust removal box and the steam boiler body. A support frame is fixedly installed inside the flue gas dust removal box, and a dust removal filter bag extending to its bottom is slidably connected to the top of the support frame.

[0008] Further, a collection hopper is fixedly connected to the inside of the flue gas dust removal box and located at the bottom of the dust removal filter bag, and an exhaust pipe communicating with the inside of the flue gas dust removal box is fixedly connected to the top of the flue gas dust removal box.

[0009] Further, a partition board is fixedly connected to the inside of the steam boiler body, and the space between the bottom of the partition board and the steam boiler body is the combustion chamber.

[0010] Further, a flue gas pipe communicating with the combustion chamber is fixedly connected to the top of the partition board, and one end of the flue gas pipe away from the partition board is communicated with the smoke exhaust pipe. A water inlet pipe communicating with the inside of the steam boiler body is fixedly connected to the top of the steam boiler body.

[0011] Further, a steam separator is fixedly installed on the top of the steam boiler body, and a steam discharge pipe is fixedly connected between the steam separator and the steam boiler body.

[0012] Further, a fuel hopper is fixedly connected to the side of the steam boiler body away from the flue gas dust removal box. A rotating cylinder is rotatably connected to the inside of the fuel hopper. A partition board is fixedly connected to the outside of the rotating cylinder, and a driving motor for rotating the rotating cylinder is fixedly installed on the back of the fuel hopper.

[0013] Further, a grate device is provided inside the steam boiler body, and an ash drop box is fixedly connected to the side of the inside of the steam boiler body away from the fuel hopper.

[0014] Compared with the prior art, the utility model provides a biomass gas-fired water-cooled wall steam boiler, which has the following beneficial effects:

[0015] 1. For this biomass gas-fired water-cooled wall steam boiler, by setting up an exhaust pipe and a flue gas dust removal box, the flue gas generated during combustion can be discharged into the flue gas dust removal box. Then, by setting up dust removal filter bags, the dust in the flue gas can be filtered. Thus, the clean flue gas is discharged through the exhaust pipe. By setting up a collecting hopper, the dust in the flue gas can be collected uniformly, which is convenient for the staff to collect and process it later, avoids a large amount of dust adhering to the exhaust pipe, reduces the maintenance work for the staff, and can pre-treat the flue gas at the same time.

[0016] 2. For this biomass gas-fired water-cooled wall steam boiler, by setting up a driving motor to drive the rotating cylinder to rotate, and then setting up the rotating cylinder to drive the partition plate to rotate, it is convenient for the staff to control the discharge speed of the biomass fuel inside the fuel hopper, avoids excessive discharge of biomass fuel resulting in insufficient combustion, improves the combustion efficiency inside the steam boiler body, and solves the problem that when the biomass fuel in the combustion chamber burns, a large amount of flue gas will be produced. These flue gases will enter the smoke pipe and then be discharged, and a large amount of dust from the biomass combustion will be mixed in the flue gas. As a result, the utility model cannot pre-treat the dust, leading to excessive accumulation of soot in the exhaust pipe, increasing the maintenance difficulty for the staff and not meeting the production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural sectional view of the utility model;

[0018] Figure 2 It is a schematic structural diagram of the flue gas dust removal device of the utility model;

[0019] Figure 3 It is a top view of the structure of the rotating cylinder of the utility model;

[0020] Figure 4 It is a three-dimensional view of the structure of the steam boiler body of the utility model.

[0021] In the figure: 1 base, 2 steam boiler body, 3 flue gas dust removal box, 4 exhaust pipe, 5 support frame, 6 dust removal filter bag, 7 exhaust pipe, 8 collecting hopper, 9 isolation plate, 10 combustion chamber, 11 smoke pipe, 12 water inlet pipe, 13 steam discharge pipe, 14 steam separator, 15 fuel hopper, 16 rotating cylinder, 17 partition plate, 18 driving motor, 19 grate device, 20 ash drop box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 4 , the biomass gas-fired water-cooled wall steam boiler in this embodiment includes a base 1 and a steam boiler body 2 fixedly connected to the top of the base 1. A flue gas dust removal device for removing dust from the flue gas is provided on one side of the steam boiler body 2. The flue gas dust removal device includes a flue gas dust removal box 3 provided on one side of the steam boiler body 2. A smoke exhaust pipe 4 is fixedly connected between the flue gas dust removal box 3 and the steam boiler body 2. A support frame 5 is fixedly installed inside the flue gas dust removal box 3. A dust removal filter bag 6 extending to its bottom is slidably connected to the top of the support frame 5.

[0024] Among them, a collection hopper 8 is fixedly connected to the inside of the flue gas dust removal box 3 and at the bottom of the dust removal filter bag 6. A controller is fixedly installed on the front of the steam boiler body 2. An exhaust pipe 7 communicating with the inside of the flue gas dust removal box 3 is fixedly connected to the top of the flue gas dust removal box 3. A box door is hinged to one side of the flue gas dust removal box 3, which is convenient for the staff to uniformly collect and process the filtered dust.

[0025] In this embodiment, a partition plate 9 is fixedly connected to the inside of the steam boiler body 2. The space between the bottom of the partition plate 9 and the steam boiler body 2 is a combustion chamber 10. A smoke pipe 11 communicating with the combustion chamber 10 is fixedly connected to the top of the partition plate 9. One end of the smoke pipe 11 away from the partition plate 9 is communicated with the smoke exhaust pipe 4. A water inlet pipe 12 communicating with the inside of the steam boiler body 2 is fixedly connected to the top of the steam boiler body 2.

[0026] Among them, a steam separator 14 is fixedly installed on the top of the steam boiler body 2. A steam discharge pipe 13 is fixedly connected between the steam separator 14 and the steam boiler body 2. A water level sensor is fixedly installed on the inner top wall of the steam boiler body 2. By setting the water level sensor, the water volume inside the steam boiler body 2 can be monitored to avoid the situation of too little water volume.

[0027] It should be noted that by setting the steam separator 14, the moisture and impurities in the water vapor can be separated, and then pure water vapor can be obtained for relevant equipment to use.

[0028] In this embodiment, a fuel hopper 15 is fixedly connected to one side of the steam boiler body 2 away from the flue gas dust removal box 3. A rotary cylinder 16 is rotatably connected inside the fuel hopper 15. A partition plate 17 is fixedly connected to the outside of the rotary cylinder 16. A drive motor 18 for rotating the rotary cylinder 16 is fixedly installed on the back of the fuel hopper 15.

[0029] Among them, a grate device 19 is arranged inside the steam boiler body 2. A dust dropping box 20 is fixedly connected to one side of the inside of the steam boiler body 2 away from the fuel hopper 15. By setting the drive motor 18 to drive the rotary cylinder 16 to rotate, and then setting the rotary cylinder 16 to drive the partition plate 17 to rotate, it is convenient for the staff to control the discharge speed of the biomass fuel inside the fuel hopper 15, avoiding excessive emission of biomass fuel resulting in insufficient combustion, and improving the combustion efficiency inside the steam boiler body 2.

[0030] The working principle of the above embodiment is as follows:

[0031] First, the staff pours a large amount of biomass fuel into the fuel hopper 15. Subsequently, the drive motor 18 is started to drive the rotary cylinder 16 to rotate, and the biomass fuel is evenly discharged into the combustion chamber 10 for combustion. At the same time, the grate device 19 is started to convey the biomass fuel. The dust generated during combustion will enter the flue gas pipe 11. At this time, the flue gas pipe 11 absorbs the heat in the flue gas and heats the water at the top of the isolation plate 9 at the same time. Then, the flue gas enters the flue gas dust removal box 3 through the exhaust pipe 4 to pre-treat the dust in the flue gas. At the same time, the steam generated by heating the water enters the steam separator 14 and is then discharged for use by related equipment. At the same time, the grate device 19 will convey the waste residue after the combustion of the biomass fuel into the dust dropping box 20 for collection.

[0032] The electrical components mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control, and the existing publicly disclosed electrical connection technology will not be elaborated in the text.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water-cooled wall steam boiler burning biomass gas, comprising a base (1) and a steam boiler body (2) fixedly connected to the top of the base (1), characterized in that: A flue gas dust removal device for removing dust from flue gas is provided on one side of the steam boiler body (2); The flue gas dust removal device comprises a flue gas dust removal box (3) arranged on one side of a steam boiler body (2), a smoke exhaust pipe (4) is fixedly connected between the flue gas dust removal box (3) and the steam boiler body (2), a support frame (5) is fixedly installed inside the flue gas dust removal box (3), and a dust removal filter bag (6) extending to the bottom of the support frame (5) is slidably connected to the top of the support frame (5).

2. The biomass gas fired water-cooled wall steam boiler according to claim 1, characterized in that: A collecting hopper (8) is fixedly connected inside the flue gas dust removal box (3) and at the bottom of the dust removal filter bag (6), and an exhaust pipe (7) connected to the inside of the flue gas dust removal box (3) is fixedly connected to the top of the flue gas dust removal box (3).

3. The biomass gas fired water-cooled wall steam boiler according to claim 1, characterized in that: An isolation plate (9) is fixedly connected to the interior of the steam boiler body (2), and the space between the bottom of the isolation plate (9) and the steam boiler body (2) is a combustion chamber (10).

4. The biomass gas fired water-cooled wall steam boiler according to claim 3, characterized in that: The top of the isolation plate (9) is fixedly connected to a flue gas pipe (11) connected to the combustion chamber (10); one end of the flue gas pipe (11) away from the isolation plate (9) is connected to a smoke exhaust pipe (4); the top of the steam boiler body (2) is fixedly connected to a water inlet pipe (12) connected to the interior thereof.

5. The biomass gas fired water-cooled wall steam boiler according to claim 1, characterized in that: A steam separator (14) is fixedly installed on the top of the steam boiler body (2), and a steam discharge pipe (13) is fixedly connected between the steam separator (14) and the steam boiler body (2).

6. The biomass gas fired water-cooled wall steam boiler according to claim 1, characterized in that: A fuel hopper (15) is fixedly connected to the side of the steam boiler body (2) away from the flue gas dust removal box (3); a rotating cylinder (16) is rotatably connected to the inside of the fuel hopper (15); a partition plate (17) is fixedly connected to the outside of the rotating cylinder (16); and a driving motor (18) for rotating the rotating cylinder (16) is fixedly installed on the back of the fuel hopper (15).

7. The biomass gas fired water-cooled wall steam boiler according to claim 6, characterized in that: A grate device (19) is provided inside the steam boiler body (2), and an ash box (20) is fixedly connected to a side of the steam boiler body (2) away from the fuel hopper (15).

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