Gasification rotary combustion hot blast stove

Abstract

The gasification rotary combustion hot blast stove belongs to boiler equipment; a cylindrical annular air chamber is arranged on the inner wall of the stove shell, a cold air inlet and a hot air outlet are arranged on the outside of the stove shell respectively, an air induction fan is communicated with the hot air outlet, from bottom to top in the stove shell, a box type through hole fire stopping plate provided with vertical through hole A, a box type through hole disc provided with vertical through hole B and a flue gas flow guide box are sequentially installed and communicated with the cylindrical annular air chamber, a sealing partition plate is vertically fixed in the cylindrical annular air chamber, a plurality of broken ring shaped flow guide plates are sequentially installed in the cylindrical annular air chamber from bottom to top, a spiral annular air flow channel is formed in the cylindrical annular air chamber; the stove takes air as a heat exchange carrier, has the characteristics of simple and reasonable structure, low cost, high thermal efficiency, energy saving and environmental protection and long service life.

Description

Technical Field

[0001] This utility model pertains to boiler equipment and mainly relates to a gasification rotary combustion hot air boiler. Background Technology

[0002] Addressing numerous technical problems inherent in traditional atmospheric pressure water boilers, such as incomplete fuel combustion, significant heat loss, low thermal efficiency, severe equipment corrosion from flue gas, short equipment lifespan, high energy consumption, and high operating costs, the patent applicant developed and designed a "Moving Grate Gasification Rotary Combustion Boiler" in 2011, obtaining invention patent right number 201110287665.4. This invention has significantly improved the working performance and operational indicators of atmospheric pressure water boilers. However, this boiler structure cannot adapt to or meet the needs of hot blast stoves using air as the heat exchange medium, limiting its application scope and resulting in poor applicability. 。 Summary of the Invention

[0003] The purpose of this utility model is to address the problems existing in the prior art and, in combination with the current actual needs of hot air boilers, to develop a gasification rotary combustion hot air furnace that achieves the goals of simple structure, low cost, high thermal efficiency, energy saving and environmental protection, minimal corrosion of equipment by combustion flue gas, long service life, and adaptability to and satisfaction of the needs for hot air gas usage.

[0004] The basic design of this utility model is as follows: a cylindrical annular gas chamber is provided on the inner wall of the furnace shell; a cold air inlet and a hot air outlet, which are connected to the cylindrical annular gas chamber, are respectively provided on the upper and lower parts of the outer side of the furnace shell. The hot air outlet is connected to a fixedly configured induced draft fan. From bottom to top, a box-type through-hole flame arrestor plate with vertical through holes A, a box-type through-hole perforated plate with vertical through holes B, and upper and lower staggered flue gas guide boxes are installed sequentially in the inner cavity of the furnace shell. The box-type through-hole flame arrestor plate, the box-type through-hole perforated plate, and the flue gas guide boxes are all connected to the cylindrical annular gas chamber. A sealing baffle is vertically fixed inside the cylindrical annular gas chamber, which seals off the annular gas passage of the cylindrical annular gas chamber. Multiple broken annular guide plates are arranged sequentially from bottom to top inside the cylindrical annular gas chamber. The inner annular hole wall and the outer annular circular wall of the broken annular guide plates are respectively sealed and fixed to the two opposite walls of the cylindrical annular gas chamber. The multiple broken annular guide plates from bottom to top are respectively sealed and fixed to the opposite sides of the sealing baffle at intervals, forming a spiral annular airflow channel inside the cylindrical annular gas chamber, thus constituting a gasification rotary combustion hot blast stove.

[0005] Based on the existing movable grate gasification rotary combustion boiler, this utility model realizes the development of a gasification rotary combustion hot air stove with air as the heat exchange carrier through scientific and reasonable innovative design. It has the characteristics of simple, reasonable and novel structure, low cost, high thermal efficiency, energy saving and environmental protection, and long service life. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of a gasification rotary combustion hot blast stove;

[0007] Figure 2 This is a schematic diagram of the assembly structure of the cylindrical annular gas chamber, the broken annular guide plate, and the sealing baffle inside the furnace shell.

[0008] Figure 3 yes Figure 2 Sectional view along axis AA;

[0009] Figure 4 yes Figure 2 BB-direction sectional view;

[0010] Figure 5 yes Figure 1 A partial view along the C-axis, i.e., a schematic diagram of the box-type through-hole flower plate structure;

[0011] Figure 6 yes Figure 1 A partial view from direction D, which is a schematic diagram of the box-type through-hole fire-resistant plate structure.

[0012] Part number description in the image:

[0013] 1. Flue gas exhaust pipe; 2. Wet dust collector; 3. Cold air inlet; 4. Dry dust collector; 5. Flue gas guide box; 6. Furnace shell; 7. Cylindrical annular chamber; 8. Broken annular guide plate; 9. Hot gas outlet; 10. Exhaust fan; 11. Furnace grate; 12. Box-type through-hole flame arrestor plate; 12-1. Vertical through-hole A; 13. Box-type through-hole flower plate; 13-1. Vertical through-hole B; 14. Sealing partition. Detailed Implementation

[0014] The following is a detailed description of the embodiments of this utility model with reference to the accompanying drawings. A gasification rotary combustion hot air furnace includes a furnace shell 6, a flue gas discharge pipe 1 installed at the top of the furnace shell 6, the flue gas discharge pipe 1 communicating with the inner cavity of the furnace shell 6, a wet dust collector 2 installed in the pipe hole of the flue gas discharge pipe 1, a grate 11 installed at the bottom of the furnace shell 6, a dry dust collector 4 installed in the inner cavity of the furnace shell 6 below the wet dust collector 2, a cylindrical annular air chamber 7 provided on the inner wall of the furnace shell 6, a cold air inlet 3 and a hot air outlet 9 respectively provided on the upper and lower outer sides of the furnace shell 6, communicating with the cylindrical annular air chamber 7, the hot air outlet 9 communicating with a fixedly configured induced draft fan 10, and a box-type through-hole fire arrestor plate 12 with vertical through holes A12-1 and B12-1 respectively installed sequentially from bottom to top in the inner cavity of the furnace shell 6. The box-type through-hole plate 13 and the upper and lower staggered flue gas guide boxes 5 of 13-1 are interconnected with the box-type through-hole flame arrestor plate 12, the box-type through-hole plate 13 and the flue gas guide box 5. A sealing partition 14 is vertically fixed in the cylindrical annular gas chamber 7. The sealing partition 14 seals and isolates the annular air passage of the cylindrical annular gas chamber 7. Multiple broken annular guide plates 8 are arranged sequentially from bottom to top in the cylindrical annular gas chamber 7. The inner annular hole wall and the outer annular circular wall of the broken annular guide plate 8 are respectively sealed and fixedly connected to the two opposite walls of the cylindrical annular gas chamber 7. The multiple broken annular guide plates 8 from bottom to top are respectively sealed and fixedly connected to the opposite two sides of the sealing partition 14 at intervals, forming a spiral annular airflow channel in the cylindrical annular gas chamber 7.

[0015] During operation, the induced draft fan 10 is turned on, and cold air is sequentially introduced from the cold air inlet 3 into the cylindrical annular chamber 7, the flue gas guide box 5, the box-type through-hole plate 13, and the box-type through-hole flame arrestor 12. The wet dust collector 2 and the dry dust collector 4 are started. As the flame and hot flue gas generated by fuel combustion on the grate 11 rise and run, they heat the cold air in the box-type through-hole flame arrestor 12, the box-type through-hole plate 13, the flue gas guide box 5, and the cylindrical annular chamber 7. After absorbing heat and completing heat exchange, the hot air is delivered to the hot air use equipment through the hot air outlet 9 and the induced draft fan 10. The annular guide plate 8 inside the cylindrical annular chamber 7 causes the air to flow in a spiral rotation, significantly extending the heat exchange path between the hot flue gas and the cold air. The box-type through-hole flame arrestor plate 12, the box-type through-hole flower plate 13, and the flue gas guide box 5 further increase the heat exchange area between the hot flue gas and the cold air, effectively improving the heat exchange efficiency of the hot blast stove, saving a large amount of fuel resources, and resulting in low operating costs. The combined use of the wet dust collector 12 and the dry dust collector 4 results in a significantly outstanding dust removal effect.

Claims

1. A gasification rotary combustion hot air furnace, comprising a furnace shell (6), a flue gas discharge pipe (1) installed on the top of the furnace shell (6), the flue gas discharge pipe (1) communicating with the inner cavity of the furnace shell (6), a wet dust collector (2) fitted into the pipe hole of the flue gas discharge pipe (1), a grate (11) installed at the bottom of the furnace shell (6), and a dry dust collector (4) installed in the inner cavity of the furnace shell (6) below the wet dust collector (2), characterized in that: A cylindrical annular gas chamber (7) is provided on the inner wall of the furnace shell (6). A cold air inlet (3) and a hot air outlet (9) communicating with the cylindrical annular gas chamber (7) are respectively provided on the upper and lower outer sides of the furnace shell (6). The hot air outlet (9) is connected to a fixedly configured induced draft fan (10). In the inner cavity of the furnace shell (6), a box-type through-hole flame arrestor plate (12) with vertical through holes A (12-1), a box-type through-hole flower plate (13) with vertical through holes B (13-1), and flue gas guide boxes (5) arranged in an upper and lower staggered manner are installed sequentially from bottom to top. The box-type through-hole flame arrestor plate (12), the box-type through-hole flower plate (13), and the flue gas guide box (5) are arranged in an upper and lower staggered manner. 5) All are interconnected with the cylindrical annular air chamber (7). A sealing partition (14) is vertically fixed inside the cylindrical annular air chamber (7). The sealing partition (14) seals and isolates the annular air passage of the cylindrical annular air chamber (7). Multiple broken annular guide plates (8) are arranged sequentially from bottom to top inside the cylindrical annular air chamber (7). The inner annular hole wall and outer annular circular wall of the broken annular guide plate (8) are respectively sealed and fixedly connected to the two opposite walls of the cylindrical annular air chamber (7). Multiple broken annular guide plates (8) from bottom to top are respectively sealed and fixedly connected to the two opposite sides of the sealing partition (14) at intervals, forming a spiral annular airflow channel inside the cylindrical annular air chamber (7).

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