Biomass fuel semi-gasification hot blast stove

Abstract

The utility model discloses a biomass fuel semi-gasification hot blast stove, and belongs to the technical field of hot blast stove equipment. The hot blast stove comprises a biomass feeding mechanism, a combustion fan, a smoke guide machine, a main fan, a gas conversion combustion chamber, a main combustion chamber, a heat exchange chamber, an air outlet, a stove cover, an ash removal hole and a fire observation hole. The combustion chamber and the heat exchange chamber are combined and connected through multiple layers of cylinders to form a closed flue and a closed hot air duct. And the right heat exchange sheet is welded in the hot air channel, so that heat is fully converted and utilized. Biomass fuel is fed into the combustion chamber through the feeding mechanism to be combusted, the biomass fuel is combusted in the combustion chamber and converted into coal gas, the coal gas is fully mixed with combustion-supporting air on the upper portion of the combustion chamber and then fully combusted on the combustion nozzle, and the chromaticity of exhausted smoke can reach micro ash or full white. Cold air absorbs heat of the combustion chamber through the heat exchange chamber and converts the heat into needed hot air, and the heated hot air serves as a drying heat source for tea, vegetables, medicinal materials and the like.

Description

Technical Field

[0001] The utility model relates to the field of tea, vegetable and medicinal material processing machinery, and specifically relates to a biomass fuel semi-gasification hot air furnace. Background Art

[0002] In the drying process of agricultural and sideline products, hot air is used to dry tea, vegetables, Chinese medicinal materials, etc. The combustion furnace in the prior art is suitable for coal-fired furnaces, but not for biomass fuels. The furnace structure is unreasonable, and the fuel is directly piled up in the furnace, which is prone to slagging, coking and explosion. In addition, the furnace structure does not gather gas, the primary combustion chamber heats up slowly, and the secondary combustion is difficult to stimulate, resulting in incomplete fuel combustion, and the emissions contain many harmful substances, which pollute the environment. Utility Model Content

[0003] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a biomass fuel semi-gasification hot air furnace. The utility model biomass fuel semi-gasification hot air furnace feeds the biomass fuel into the gas conversion combustion chamber through a feeding mechanism, and under the action of the combustion-supporting fan and the smoke exhaust fan, the biomass particle fuel generates a large amount of combustible mixed gas in the gas conversion combustion chamber, which is fully burned in the main combustion chamber through the burner and releases a large amount of heat, and the heat is converted into usable hot air through the heat exchange chamber.

[0004] The utility model is realized by constructing a biomass fuel semi-gasification hot air furnace, characterized in that it comprises a combustion-supporting fan (1), an air outlet (2), a biomass feeding mechanism (3), a gas conversion combustion chamber (4), a main combustion chamber (5), an outer cylinder (6), a thermal insulation layer (7), a first layer outer cylinder (8), an outer heat exchange plate (9), a second layer middle cylinder (10), a third layer middle cylinder (11), a middle heat exchange plate (12), a fourth layer inner cylinder (13), a flue (14), an outer The furnace cover (15), the middle furnace cover (16), the inner furnace cover (17), the ash cleaning hole (18), the fire viewing hole (19), the smoke eliminator (20), and the main fan (21) are connected to form an integral structure; the combustion-supporting fan (1), the air outlet (2), the biomass feeding mechanism (3), the coal gas conversion combustion chamber (4), the main combustion chamber (5), the outer cylinder (6), the thermal insulation layer (7), the ash cleaning hole (18), the fire viewing hole (19), the smoke eliminator (20), and the main fan (21) are connected to form an outer shell.

[0005] Furthermore, it also includes a cone cylinder (22) and an upper cylinder (23), and the cone cylinder (22) and the upper cylinder (23) constitute a burner; the upper sealing plate (24), the small inner cylinder (25), the partition (26), the large upper inner cylinder (27), the combustion-supporting air duct (28), the large inner cylinder (29), the inner heat exchange plate (30), the furnace bridge (31), and the feed pipe (32) are connected to form the overall structure of the gas conversion combustion chamber.

[0006] Furthermore, the outer hot air exchange chamber is formed by connecting the first outer cylinder (8), the outer heat exchange plate (9), the second middle cylinder (10), and the outer furnace cover (15).

[0007] Furthermore, the inner hot air exchange chamber is formed by connecting the third layer middle cylinder (11), the middle heat exchange plate (12), the fourth layer inner cylinder (13), the middle furnace cover (16), and the inner furnace cover (17).

[0008] Furthermore, the fourth inner cylinder (13) and the inner furnace cover (17) are connected to form a combustion conversion chamber.

[0009] Furthermore, the gas conversion combustion chamber (4) is connected to the biomass feeding mechanism (3), and the biomass feeding mechanism (3) provides biomass fuel to the combustion furnace according to the set requirements. The biomass fuel generates a large amount of combustible mixed gas through the gas conversion combustion chamber (4), and after secondary mixing in the main combustion chamber (5), it achieves the effect of full combustion and release of heat energy.

[0010] Furthermore, the main fan (21) is connected to the heat exchange chamber, and the heat exchange chamber heats the cold air sent in by the main fan (21) to the required hot air and sends it out through the air outlet (2).

[0011] The utility model discloses a biomass fuel semi-gasification hot air furnace, which includes a biomass feeding mechanism, a combustion-supporting fan, a smoke exhaust fan, a main fan, a coal gas conversion combustion chamber, a main combustion chamber, a heat exchange chamber, an air outlet, a furnace cover, an ash cleaning hole, and a fire viewing hole; the combustion chamber and the heat exchange chamber are connected by a multi-layer cylinder combination to form a closed flue and hot air duct. A heat exchange plate is welded in the hot air duct to fully convert and utilize the heat. The biomass fuel is fed into the combustion chamber through the feeding mechanism for combustion, and the biomass fuel is burned and converted to coal gas in the combustion chamber. The coal gas is fully mixed with the combustion-supporting air in the upper part of the combustion chamber to achieve full combustion at the burner. The color of the exhausted smoke can reach slightly gray or completely white. The cold air absorbs the heat of the combustion chamber through the heat exchange chamber and converts it into the required hot air. The heated hot air is used as a heat source for drying tea leaves, vegetables, medicinal materials, etc.

[0012] The utility model has the following advantages: the utility model provides a cleaner hot blast furnace, and the gas conversion combustion chamber and the main combustion chamber of the hot blast furnace of the utility model are used to make the fuel fully burn and release heat, and the heat exchange chamber makes the heat fully converted and utilized. The biomass feeding mechanism has automatic control of the feeding amount, which can achieve a more ideal combustion ratio, thereby improving energy utilization, reducing energy consumption, and reducing and lowering the pollution of production to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the biomass fuel semi-gasification hot air furnace;

[0014] Figure 2 This is a top view of a biomass fuel semi-gasification hot air stove;

[0015] Figure 3 This is the front view of the gas conversion combustion chamber. DETAILED DESCRIPTION

[0016] The following will be combined with the attached Figure 1-Figure 3 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The utility model provides a biomass fuel semi-gasification hot air furnace through improvement. Figure 1 , Figure 2 As shown; it includes a combustion-supporting fan 1, an air outlet 2, a biomass feeding mechanism 3, a gas conversion combustion chamber 4, a main combustion chamber 5, an outer cylinder 6, a thermal insulation layer 7, a first-layer outer cylinder 8, an outer heat exchange plate 9, a second-layer middle cylinder 10, a third-layer middle cylinder 11, a middle heat exchange plate 12, a fourth-layer inner cylinder 13, a flue 14, an outer furnace cover 15, a middle furnace cover 16, an inner furnace cover 17, a ash cleaning hole 18, a fire viewing hole 19, a smoke induced fan 20, and a main fan 21, which are connected to form an overall structure; the combustion-supporting fan 1, the air outlet 2, the biomass feeding mechanism 3, the gas conversion combustion chamber 4, the main combustion chamber 5, the outer cylinder 6, the thermal insulation layer 7, the ash cleaning hole 18, the fire viewing hole 19, the smoke induced fan 20, and the main fan 21 are connected to form an outer shell.

[0018] The biomass fuel semi-gasification hot air furnace described in the present application also includes a cone 22 and an upper cylinder 23, which form a burner; the upper sealing plate 24, a small inner cylinder 25, a partition 26, a large upper inner cylinder 27, a combustion-supporting air duct 28, a large inner cylinder 29, an inner heat exchange plate 30, a furnace bridge 31, and a feed pipe 32 are connected to form the overall structure of the gas conversion combustion chamber.

[0019] In the biomass fuel semi-gasification hot air furnace described in the present application, the outer hot air exchange chamber is formed by connecting the first layer outer cylinder 8, the outer heat exchange plate 9, the second layer middle cylinder 10, and the outer furnace cover 15.

[0020] In the biomass fuel semi-gasification hot air furnace described in the present application, the inner hot air exchange chamber is formed by connecting the third layer middle cylinder 11, the middle heat exchange plate 12, the fourth layer inner cylinder 13, the middle furnace cover 16, and the inner furnace cover 17.

[0021] In the biomass fuel semi-gasification hot air furnace described in the present application, the fourth layer inner cylinder 13 and the inner furnace cover 17 are connected to form a combustion conversion chamber.

[0022] In the biomass fuel semi-gasification hot air furnace described in the present application; the gas conversion combustion chamber 4 is connected to the biomass feeding mechanism 3, and the biomass feeding mechanism 3 provides biomass fuel to the combustion furnace according to the set requirements. The biomass fuel generates a large amount of combustible mixed gas through the gas conversion combustion chamber 4, which is then mixed for the second time in the main combustion chamber 5 to achieve the effect of full combustion and release of heat energy.

[0023] In the biomass fuel semi-gasification hot air furnace described in the present application, the main fan 21 is connected to the heat exchange chamber, and the heat exchange chamber heats the cold air sent in by the main fan 21 to the required hot air and sends it out through the air outlet 2.

[0024] In summary, when the utility model is implemented, the biomass fuel is fed into the gas exchange combustion chamber through the feeding mechanism for combustion, and a large amount of combustible mixed gas generated by the combustion is mixed with the combustion-supporting air and fully burned in the main combustion chamber to generate a large amount of heat, which is heated to the required hot air through the heat exchange chamber and the heat exchange plate. Biomass fuel is also a clean and environmentally friendly fuel. The biomass feeding mechanism has an automatic control of the feeding amount, which can achieve a relatively ideal combustion effect, and the smoke color can reach level 1.

[0025] The utility model has the following effects: the utility model provides a cleaner hot blast furnace, which uses the gas conversion combustion chamber and the main combustion chamber of the hot blast furnace to fully burn the fuel and release heat, and the heat exchange chamber allows the heat to be fully converted and utilized. The biomass feeding mechanism has an automatic control of the feeding amount, which can achieve a more ideal combustion ratio, thereby improving energy utilization, reducing energy consumption, and reducing and lowering the pollution of production to the environment.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biomass fuel semi-gasification hot air furnace, characterized in that: The invention comprises a combustion-supporting fan (1), an air outlet (2), a biomass feeding mechanism (3), a coal gas conversion combustion chamber (4), a main combustion chamber (5), an outer cylinder (6), a thermal insulation layer (7), a first-layer outer cylinder (8), an outer heat exchange plate (9), a second-layer middle cylinder (10), a third-layer middle cylinder (11), a middle heat exchange plate (12), a fourth-layer inner cylinder (13), a flue (14), an outer furnace cover (15), a middle furnace cover (16), an inner furnace cover (17), an ash cleaning hole (18), a fire viewing hole (19), a smoke eliminator (20), and a main fan (21), which are connected to form an integral structure; the combustion-supporting fan (1), the air outlet (2), the biomass feeding mechanism (3), the coal gas conversion combustion chamber (4), the main combustion chamber (5), the outer cylinder (6), the thermal insulation layer (7), the ash cleaning hole (18), the fire viewing hole (19), the smoke eliminator (20), and the main fan (21) are connected to form an outer shell; An outer hot air exchange chamber is formed by connecting a first layer outer cylinder (8), an outer heat exchange fin (9), a second layer middle cylinder (10), and an outer furnace cover (15); The inner hot air exchange chamber is formed by connecting the third layer middle cylinder (11), the middle heat exchange plate (12), the fourth layer inner cylinder (13), the middle furnace cover (16), and the inner furnace cover (17); A combustion conversion chamber is formed by connecting the fourth inner cylinder (13) and the inner furnace cover (17); The gas conversion combustion chamber (4) is connected to the biomass feeding mechanism (3), and the biomass feeding mechanism (3) provides biomass fuel to the combustion furnace according to the set requirements. The biomass fuel generates a large amount of combustible mixed gas through the gas conversion combustion chamber (4), and then is secondary mixed in the main combustion chamber (5) to achieve the effect of full combustion and release of heat energy; The main fan (21) is connected to the heat exchange chamber, and the heat exchange chamber heats the cold air sent in by the main fan (21) to the required hot air and sends it out through the air outlet (2); It also includes a cone cylinder (22) and an upper cylinder (23), which form a burner nozzle; and an upper sealing plate (24), a small inner cylinder (25), a partition plate (26), a large upper inner cylinder (27), a combustion-supporting air duct (28), a large inner cylinder (29), an inner heat exchange plate (30), a furnace bridge (31), and a feed pipe (32), which are connected to form an overall structure of a gas conversion combustion chamber.

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