Hot blast stove with waste gas incineration structure

Abstract

The hot-blast stove with the waste gas incineration structure comprises a hot-blast stove body, a secondary incineration chamber and a drawing type filtering assembly, a connecting pipe is arranged in the center of the right side of the hot-blast stove body, an incineration cavity is formed in the upper end of an inner cavity of the secondary incineration chamber, and the drawing type filtering assembly is arranged between two sets of baffles. A combustor is arranged at the upper end of the right side of the secondary incineration chamber. According to the hot-blast stove with the waste gas incineration structure, through secondary incineration treatment, harmful gas and incompletely-incinerated substances generated by incineration of the hot-blast stove can be sufficiently incinerated, emission of harmful substances in waste gas is reduced, the pollution degree to the environment is reduced, and through further decomposition and incineration, the influence on human health is reduced; and the filter screen can be conveniently and quickly taken out for cleaning and replacement through the drawing type filter assembly, so that the working intensity of maintenance personnel is reduced, the working efficiency is improved, the clean state of the filter screen can be kept in time, and the waste gas treatment effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, and particularly relates to a hot blast stove with an exhaust gas incineration structure. Background Art

[0002] A hot blast stove is a thermal power machine, which began to be widely used in China in the late 1970s. It has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. There are many varieties and complete series of hot blast stoves. They are divided into two types: hand-fired and machine-fired according to the coal feeding method, and are divided into coal, oil, gas stoves, etc. according to the fuel type.

[0003] For example, the patent document with the application number 201921232538.X discloses a hot blast stove with a filtering device, including a hot blast stove shell, a sliding door, an air inlet, a blower, an air outlet, a hot air filtering device, an exhaust gas filtering device, a hot air pipe, a filter screen, and a bituminous coal combustion tank. A plurality of sliding doors are arranged on the side surface of the hot blast stove shell, a filter screen is arranged inside the sliding door, an air inlet is arranged at the bottom side of the hot blast stove shell, the air inlet is connected to the blower, the air inlet is connected to the hot air pipe inside the hot blast stove shell, a bituminous coal combustion tank is arranged inside the hot blast stove shell at the sliding door part, the top end of the hot air pipe is connected to the air outlet, the air outlet is connected to the hot air filtering device, and the exhaust gas filtering device is installed at the top end of the hot blast stove shell. The utility model sets a hot air filtering device at the outlet of the hot air pipe and an exhaust gas filtering device at the top end of the hot blast stove, significantly reducing the content of dust or coal ash in the environment and effectively improving the air quality.

[0004] For similar hot blast stoves, during the primary combustion process, due to the complex composition of the exhaust gas, there are cases of incomplete combustion or partial combustion, resulting in pollutants such as harmful gases, organic substances, and volatile organic compounds still being contained in the exhaust gas. Moreover, the exhaust gas filter screen is usually affected by the accumulation of pollutants in the exhaust gas over time, resulting in a decline in the filtering effect or even blockage, thus affecting the environment and the filtering effect.

[0005] Therefore, in view of this, research and improvement are carried out on the existing structural deficiencies, and a hot blast stove with an exhaust gas incineration structure is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a problem that in the primary combustion process of a hot blast stove with an exhaust gas incineration structure, due to the complex composition of the exhaust gas, there are cases of incomplete combustion or partial combustion, resulting in pollutants such as harmful gases, organic substances, and volatile organic compounds still being contained in the exhaust gas. Moreover, the exhaust gas filter screen is usually affected by the accumulation of pollutants in the exhaust gas over time, resulting in a decline in the filtering effect or even blockage, thus affecting the environment and the filtering effect.

[0007] To achieve the above object, the present utility model provides the following technical solution: A hot blast stove with an exhaust gas incineration structure, comprising a hot blast stove body, a secondary incineration chamber and a pull-out filter assembly. An air inlet is provided on the left side of the upper end surface of the hot blast stove body. A connecting pipe is provided at the center of the right side of the hot blast stove body. The secondary incineration chamber is provided on the right side of the connecting pipe away from the hot blast stove body. An incineration chamber is provided at the upper end of the inner cavity of the secondary incineration chamber. A partition plate is provided on the left side of the incineration chamber. A baffle is provided at the center of the inner cavity of the secondary incineration chamber. There are two groups of baffles. Air channels are provided on the right sides of the two groups of baffles. The pull-out filter assembly is arranged between the two groups of baffles. A burner is provided at the upper end of the right side of the secondary incineration chamber. An air outlet is provided at the lower end of the right side of the secondary incineration chamber. A blower is provided on the right side of the air outlet.

[0008] Further, the pull-out filter assembly includes a pull-out drawer, a primary filter screen, a secondary filter screen, a push-pull handrail and a limiting groove. The pull-out drawer is arranged at the center of the right side of the secondary incineration chamber. The primary filter screen is arranged between the two groups of baffles. The secondary filter screen is arranged at the lower end of the primary filter screen. The push-pull handrail is provided on the right side of the pull-out drawer. Limiting grooves are provided on the left sides of the primary filter screen and the secondary filter screen.

[0009] Further, the hot blast stove body is connected to the secondary incineration chamber through the connecting pipe. A check valve is provided at the end of the connecting pipe away from the hot blast stove body.

[0010] Further, one side of the pull-out drawer is respectively connected to the primary filter screen and the secondary filter screen through the secondary incineration chamber. The ends of the primary filter screen and the secondary filter screen away from the pull-out drawer are both abutted against the inner cavity of the limiting groove.

[0011] Further, the output end of the burner is connected to the incineration chamber through the secondary incineration chamber. The partition plate corresponds to the position of the output end of the burner.

[0012] Further, the surface of the primary filter screen is an activated carbon filtration structure, and the surface of the secondary filter screen is a ceramic membrane filtration structure.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through secondary incineration treatment, harmful gases and incompletely incinerated substances generated by the incineration of the hot blast stove can be fully incinerated, reducing the emission of harmful substances in the exhaust gas and reducing the degree of environmental pollution. Through further decomposition and incineration, the impact on human health is reduced, achieving the purpose of secondary purification of the exhaust gas. And through the pull-out filter assembly, the filter screen can be conveniently and quickly taken out for cleaning and replacement, reducing the work intensity of maintenance personnel, improving the operation efficiency, being conducive to timely maintaining the clean state of the filter screen, and ensuring the exhaust gas treatment effect. The specific content is as follows:

[0014] A hot blast stove body, an air inlet, a connecting pipe, a secondary incineration chamber, a partition plate, and an incineration cavity are provided. The waste gas discharged from the hot blast stove body is sent into the secondary incineration chamber through the connecting pipe. The unburned substances and harmful gases generated in the waste gas after the combustion of the hot blast stove are guided into the secondary incineration chamber for secondary combustion. In the secondary incineration chamber, through re-incineration, the waste gas containing harmful substances is further combusted, thereby reducing the emission of harmful substances in the waste gas and reducing the pollution to the environment and the human body.

[0015] A pull-out filter assembly is provided. Subsequently, the primary filter screen and the secondary filter screen in the pull-out filter assembly can effectively filter solid particles, dust, soot, etc. in the waste gas, convert the harmful gases therein into harmless substances, thereby reducing the emission of pollutants, and by connecting the pull-out drawer to the primary filter screen and the secondary filter screen, when moving the pull-out drawer through the push-pull armrest, it can be pulled out by removing the bolts, and the primary filter screen and the secondary filter screen can be taken out from the secondary incineration chamber, making it easier to take out and replace the filter screen, and timely carrying out maintenance. When the machine is shut down for maintenance, the cleaning or replacement of the filter screen can be completed more quickly. Description of the Drawings

[0016] Figure 1 is a front sectional structure schematic diagram of a hot blast stove with an exhaust gas incineration structure according to the present utility model;

[0017] Figure 2 is a Figure 1 partial enlarged structure schematic diagram of part A in a hot blast stove with an exhaust gas incineration structure according to the present utility model;

[0018] Figure 3 is a right view structure schematic diagram of a hot blast stove with an exhaust gas incineration structure according to the present utility model;

[0019] Figure 4 is a cross-sectional structure schematic diagram of the connecting pipe of a hot blast stove with an exhaust gas incineration structure according to the present utility model.

[0020] In the figure: 1, hot blast stove body; 2, air inlet; 3, connecting pipe; 4, check valve; 5, secondary incineration chamber; 6, partition plate; 7, incineration cavity; 8, pull-out filter assembly; 801, fitting drawer; 802, primary filter screen; 803, secondary filter screen; 804, push-pull armrest; 805, limit groove; 9, burner; 10, fan; 11, smoke outlet; 12, baffle; 121, air duct. Detailed Embodiments

[0021] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] As Figures 1 to 4 shown, a hot blast stove with an exhaust gas incineration structure includes a hot blast stove body 1, a secondary incineration chamber 5 and a pull-out filter assembly 8. An air inlet 2 is provided on the left side of the upper end surface of the hot blast stove body 1, and the air inlet 2 provides the inflow of gas into the hot blast stove body 1. A connecting pipe 3 is provided at the center lake on the right side of the hot blast stove body 1, and the connecting pipe 3 conveys the exhaust gas generated by the hot blast stove to the secondary incineration chamber 5 for further treatment. A secondary incineration chamber 5 is provided on the right side of the connecting pipe 3 away from the hot blast stove body 1. The hot blast stove body 1 is connected to the secondary incineration chamber 5 through the connecting pipe 3. The exhaust gas generated by the hot blast stove body 1 is conveyed to the secondary incineration chamber 5 through the connecting pipe 3 for secondary combustion and treatment to reduce the emission of harmful gases. A check valve 4 is provided at one end of the connecting pipe 3 away from the hot blast stove body 1, and the check valve 4 prevents the exhaust gas in the secondary incineration chamber 5 from flowing back into the hot blast stove body 1;

[0023] An incineration chamber 7 is provided at the upper end of the inner cavity of the secondary incineration chamber 5. The incineration chamber 7 provides sufficient space for incinerating exhaust gas and waste, making the combustion more complete and effectively reducing the emission of harmful gases. A burner 9 is provided at the upper end on the right side of the secondary incineration chamber 5. The output end of the burner 9 is connected to the incineration chamber 7 through the secondary incineration chamber 5. After mixing fuel and air, the burner 9 introduces them into the incineration chamber 7 through the output end, enabling the exhaust gas to burn in a high-temperature and oxygen-rich environment to achieve the effect of eliminating harmful gases and pollutants. A partition plate 6 corresponds to the position of the output end of the burner 9. The partition plate 6 is provided on the left side of the incineration chamber 7, and the partition plate 6 blocks the output of the burner 9 to avoid affecting the connecting pipe 3. A baffle 12 is provided at the center of the inner cavity of the secondary incineration chamber 5. There are two groups of baffles 12, and air ducts 121 are provided on the right sides of the two groups of baffles 12. The settings of the baffle 12 and the air ducts 121 help guide the exhaust gas to flow out along the air ducts 121 in the inner cavity of the secondary incineration chamber 5, promoting the transfer of heat and mass, improving the combustion efficiency, and reducing the emission of harmful gases;

[0024] The draw-type filtration assembly 8 is arranged between two groups of baffles 12. The draw-type filtration assembly 8 includes a draw-out drawer 801, a primary filter screen 802, a secondary filter screen 803, a push-pull handrail 804 and a limit groove 805. The draw-out drawer 801 is arranged at the center on the right side of the secondary incineration chamber 5. One side of the draw-out drawer 801 is respectively connected to the primary filter screen 802 and the secondary filter screen 803 through the secondary incineration chamber 5. The draw-out drawer 801 is the core part of the draw-type filtration assembly 8 and is used to connect the primary filter screen 802 and the secondary filter screen 803, running through the right side of the secondary incineration chamber 5. The primary filter screen 802 is arranged between the two groups of baffles 12, and the secondary filter screen 803 is arranged at the lower end of the primary filter screen 802. The surface of the primary filter screen 802 is an activated carbon filtration structure, and the primary filter screen 802 with the activated carbon filtration structure removes large particles and volatile organic compounds in the waste gas. The surface of the secondary filter screen 803 is a ceramic membrane filtration structure, and the secondary filter screen 803 with the ceramic membrane filtration structure removes residual fine particles and solid particulate matters, thereby realizing the filtration and purification of the waste gas and reducing the impact on the environment and human body. A push-pull handrail 804 is arranged on the right side of the draw-out drawer 801, and the push-pull handrail 804 enables the draw-out drawer 801 to be conveniently pulled out and pushed in. Limit grooves 805 are arranged on the left sides of the primary filter screen 802 and the secondary filter screen 803, and the ends of the primary filter screen 802 and the secondary filter screen 803 far from the draw-out drawer 801 are both abutted against the inner cavity of the limit grooves 805. The limit grooves 805 are used to fix the positions of the primary filter screen 802 and the secondary filter screen 803. An air outlet 11 is arranged at the lower end on the right side of the secondary incineration chamber 5, and a blower 10 is arranged on the right side of the air outlet 11. The waste gas is discharged from the air outlet 11 after being filtered. The blower 10 accelerates the discharge of the waste gas and promotes the convection of air by inhaling and discharging air, maintaining the air flow and the combustion process.

[0025] In summary, as Figures 1 to 4As shown in the figure, for the hot blast stove with an exhaust gas incineration structure, the exhaust gas generated by the hot blast stove body 1 is transported to the secondary incineration chamber 5 through the connecting pipe 3 for secondary combustion and treatment. The check valve 4 prevents the exhaust gas in the secondary incineration chamber 5 from flowing back into the hot blast stove body 1. Subsequently, the exhaust gas first enters the incineration chamber 7, where the exhaust gas is preliminarily burned by the burner 9. The spacer 6 protects the connecting pipe 3, and the exhaust gas is continuously transported from the connecting pipe 3. The gas generated during the combustion of the burning exhaust gas flows through the air duct 121 in the incineration chamber 7. When the fan 10 is working, it extracts the gas in the secondary incineration chamber 5 through the air outlet 11, thereby driving the air flow, accelerating the exhaust gas emission, and promoting the air convection. Thus, when the burning exhaust gas directly flows through the air duct 121 to the pull-out type filtration assembly 8, after being filtered by the primary filter screen 802, the remaining fine particles and solid particulate matters will be further filtered by the secondary filter screen 803 to achieve the effect of purifying the exhaust gas. When replacement and cleaning are required, the disassembly bolt drives the pull-out drawer 801 to be pulled out through the push-pull armrest 804, thereby causing the primary filter screen 802 and the secondary filter screen 803 to lose the support of the limit groove 805, making it easier to take out and replace, and timely carrying out maintenance. Then, it is discharged through the air duct 121 of another group of baffles 12 and discharged through the air outlet 11.

Claims

1. A hot blast stove with an exhaust gas incineration structure, comprising a hot blast stove body (1), a secondary incineration chamber (5) and a pull-out filter assembly (8), characterized in that: On the left side of the upper end surface of the hot blast stove body (1), an air inlet (2) is provided. A connecting pipe (3) is provided at the center of the right side of the hot blast stove body (1). On the right side of the connecting pipe (3) away from the hot blast stove body (1), a secondary incineration chamber (5) is provided. At the upper end of the inner cavity of the secondary incineration chamber (5), an incineration cavity (7) is provided. A partition plate (6) is provided on the left side of the incineration cavity (7). At the center of the inner cavity of the secondary incineration chamber (5), a baffle (12) is provided. There are two groups of the baffle (12). Air channels (121) are opened on the right sides of the two groups of the baffle (12). The drawable filter assembly (8) is arranged between the two groups of the baffle (12). A burner (9) is provided at the upper right side of the secondary incineration chamber (5). An air outlet (11) is provided at the lower right side of the secondary incineration chamber (5). A fan (10) is provided on the right side of the air outlet (11).

2. The hot blast stove with an exhaust gas incineration structure according to claim 1, wherein: The drawable filter assembly (8) includes a drawable drawer (801), a primary filter screen (802), a secondary filter screen (803), a push-pull handle (804) and a limit groove (805). The drawable drawer (801) is arranged at the center of the right side of the secondary incineration chamber (5). A primary filter screen (802) is arranged between the two groups of the baffle (12). A secondary filter screen (803) is arranged at the lower end of the primary filter screen (802). A push-pull handle (804) is arranged on the right side of the drawable drawer (801). Limit grooves (805) are arranged on the left sides of the primary filter screen (802) and the secondary filter screen (803).

3. The hot blast stove with an exhaust gas incineration structure according to claim 1, characterized in that: The hot blast stove body (1) is connected to the secondary incineration chamber (5) through the connecting pipe (3). A check valve (4) is arranged at one end of the connecting pipe (3) away from the hot blast stove body (1).

4. The hot blast stove with an exhaust gas incineration structure according to claim 2, characterized in that: One side of the drawable drawer (801) is respectively connected to the primary filter screen (802) and the secondary filter screen (803) through the secondary incineration chamber (5). The ends of the primary filter screen (802) and the secondary filter screen (803) away from the drawable drawer (801) are both abutted against the inner cavity of the limit groove (805).

5. The hot blast stove with an exhaust gas incineration structure according to claim 2, characterized in that: The output end of the burner (9) is connected to the incineration cavity (7) through the secondary incineration chamber (5). The position of the partition plate (6) corresponds to the output end of the burner (9).

6. The hot blast stove with an exhaust gas incineration structure according to claim 2, characterized in that: The surface of the primary filter screen (802) is an activated carbon filtration structure. The surface of the secondary filter screen (803) is a ceramic membrane filtration structure.

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