Waste heat utilization boiler with blast furnace ash trapping and recycling functions

Abstract

The waste heat utilization boiler with the blast furnace ash capturing and recycling function comprises a boiler body and a boiler door, a capturing box is fixedly installed at the upper end of the boiler body, an air cylinder is fixedly installed at the left end of the capturing box, a pressing plate is fixedly installed at the output end of the air cylinder, a flue is fixedly installed at the lower end of the capturing box, and an air inlet is formed in the upper end of the flue. The trapping box communicates with the furnace body through a flue, a filter screen is arranged on the right portion of an inner cavity of the trapping box, and the problem that the energy utilization efficiency is low is solved. According to the technical scheme, the waste heat utilization boiler is characterized by having the blast furnace ash trapping and recycling function. The blast furnace ash generally contains a certain amount of combustible substances and heat energy. The boiler can capture and recover the blast furnace ash, combustible substances in the blast furnace ash can be combusted again, and meanwhile heat energy in the blast furnace ash is recovered. Therefore, energy waste can be reduced, and the energy utilization efficiency of the whole system can be improved. For enterprises, the energy consumption cost can be reduced, and the economic benefits can be improved.

Description

Technical Field

[0001] The invention relates to a waste heat utilization boiler, and more particularly to a waste heat utilization boiler with a blast furnace ash capture and recovery function. Background Art

[0002] A waste heat boiler is a boiler that uses the waste heat in waste gas, waste materials or waste liquids in various industrial processes and the heat generated by the combustion of their combustible substances to heat water to a certain temperature. This type of boiler can produce hot water or steam to supply other sections through waste heat recovery, thereby realizing the reuse of energy. The working principle of a waste heat boiler is mainly based on heat exchange. The waste heat in waste gas, waste materials or waste liquids and their combustible substances are burned to produce high-temperature flue gas, which first enters the furnace and then enters the waste heat recovery device of the front smoke box, the fireworks pipe, and the waste heat recovery device in the flue of the rear smoke box in turn. In this process, the high-temperature flue gas gradually transfers heat to the water in the boiler, heating it and generating steam. Finally, the high-temperature flue gas becomes low-temperature flue gas and is discharged into the atmosphere through the chimney.

[0003] Existing waste heat recovery boilers do not have the function of capturing and recovering blast furnace ash. Blast furnace ash usually contains a certain amount of combustible substances and heat energy. If not captured and recovered, these combustible substances and heat energy will be wasted during the discharge process, resulting in low energy utilization efficiency. This not only increases the energy consumption cost of the enterprise, but also aggravates the waste of energy resources.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a waste heat utilization boiler with a blast furnace ash capture and recovery function. A filter is provided on one side of the capture box to filter solid particles and impurities in the exhaust gas to ensure that the exhausted exhaust gas is cleaner. At this time, the blast furnace ash is located on the left side of the filter. An outlet is provided on the side of the capture box close to the filter. A recovery box is provided at the outlet to collect the blast furnace ash after filtering through the filter. The blast furnace ash usually contains a certain amount of combustible substances and heat energy. The boiler can capture and recover these blast furnace ashes, and the combustible substances therein can be burned again, while recovering the heat therein. This can not only reduce energy waste, but also improve the energy utilization efficiency of the entire system. For enterprises, this means that energy consumption costs can be reduced and economic benefits can be improved.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a waste heat utilization boiler with blast furnace ash capture and recovery function, including a furnace body and a furnace door, a capture box is fixedly installed on the upper end of the furnace body, a cylinder is fixedly installed on the left end of the capture box, a pressure plate is fixedly installed on the output end of the cylinder, a flue is fixedly installed on the lower end of the capture box, the capture box is connected to the furnace body through the flue, a filter is provided on the right part of the inner cavity of the capture box, an outlet is opened on the right side of the lower end of the capture box, a recovery box is placed on the right side of the upper end of the furnace body, and the upper end of the recovery box is in contact with the outlet.

[0007] The present invention is further configured as follows: four supporting legs are fixedly installed at the lower part of the furnace body.

[0008] The present invention is further configured such that: a valve is provided on the outer surface of the flue.

[0009] The present invention is further configured such that: a sealed visual window is provided on the front side of the capture box.

[0010] The present invention is further configured as follows: a bolt is movably inserted and connected to the right sides of both the front and rear ends of the capture box, and one end of the bolt is against the filter screen.

[0011] The present invention is further configured such that: the pressure plate and the filter screen maintain a parallel position relationship.

[0012] The present invention is further configured such that: the pressing plate is configured in a square shape.

[0013] In summary, the present invention has the following beneficial effects:

[0014] 1. A filter is set on one side of the capture box to filter solid particles and impurities in the exhaust gas to ensure that the exhaust gas is cleaner. At this time, the blast furnace ash is located on the left side of the filter. An outlet is opened on the side of the capture box close to the filter. A recovery box is set at the outlet to collect the blast furnace ash after filtering through the filter. The blast furnace ash usually contains a certain amount of combustible substances and heat energy. The boiler can capture and recycle these blast furnace ashes, and the combustible substances in them can be burned again, while recovering the heat energy in them. This can not only reduce energy waste, but also improve the energy utilization efficiency of the entire system. For enterprises, this means reducing energy consumption costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a top view of the three-dimensional structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the cylinder and the pressure plate of the present invention.

[0018] In the figure: 1. furnace body; 2. furnace door; 3. capture box; 4. cylinder; 5. pressure plate; 6. flue; 7. filter; 8. outlet; 9. recovery box; 10. support leg; 11. valve; 12. sealed visual window; 13. bolt. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The present invention is described in detail below in conjunction with the accompanying drawings.

[0023] A waste heat utilization boiler with blast furnace ash capture and recovery function, such as Figures 1 to 3As shown, it includes a furnace body 1 and a furnace door 2. A capture box 3 is fixedly installed on the upper end of the furnace body 1, a cylinder 4 is fixedly installed on the left end of the capture box 3, a pressure plate 5 is fixedly installed on the output end of the cylinder 4, a flue 6 is fixedly installed on the lower end of the capture box 3, the capture box 3 is connected with the furnace body 1 through the flue 6, a filter screen 7 is arranged on the right part of the inner cavity of the capture box 3, the pressure plate 5 is arranged in a square shape, and the pressure plate 5 and the filter screen 7 maintain a parallel position relationship, an outlet 8 is opened on the right side of the lower end of the capture box 3, a recovery box 9 is placed on the right side of the upper end of the furnace body 1, and the upper end of the recovery box 9 is in contact with the outlet 8. During the production process of the blast furnace, a large amount of high-temperature exhaust gas and blast furnace ash mixed therein will be generated. Open the valve 1 1, so that the flue 6 is in a smooth state, and the capture box 3 is provided to cooperate with the flue 6 to receive the high-temperature exhaust gas and mixed blast furnace ash discharged from the blast furnace body 1, and the valve 11 is closed, and the exhaust gas entering the capture box 3 is squeezed by pushing the pressure plate 5 by starting the cylinder 4. The filter screen 7 is provided on one side of the capture box 3 to filter the solid particles and impurities in the exhaust gas, so as to ensure that the exhausted exhaust gas is cleaner. At this time, the blast furnace ash is located on the left side of the filter screen 7, and the capture box 3 is provided with an outlet 8 on the side close to the filter screen 7. A recovery box 9 is provided at the outlet 8 to collect the blast furnace ash after filtering by the filter screen 7. The blast furnace ash usually contains a certain amount of combustible substances and heat energy. The boiler can capture and recycle these blast furnace ashes, and the combustible substances therein can be burned again, and the heat energy therein can be recovered at the same time. This can not only reduce energy waste, but also improve the energy utilization efficiency of the entire system. For enterprises, this means that energy consumption costs can be reduced and economic benefits can be improved.

[0024] like Figure 1 As shown, four supporting legs 10 are fixedly installed at the lower part of the furnace body 1, and a valve 11 is provided on the outer surface of the flue 6. The supporting legs 10 provide support and stability for the furnace body 1.

[0025] like Figure 2 As shown, a sealed visual window 12 is provided on the front side of the capture box 3, through which the operator can visually observe the dust capture situation inside the capture box 3. This helps to timely discover problems in the capture process, such as reduced capture efficiency, dust accumulation, etc., so as to take corresponding measures for adjustment and optimization.

[0026] like Figure 1 As shown, a bolt 13 is movably inserted and connected to the right sides of both ends of the capture box 3, and one end of the bolt 13 is against the filter 7. By rotating the bolt 13, the filter 7 can be easily taken out of the capture box 3 for replacement, maintenance or cleaning.

[0027] Working principle: In the blast furnace production process, a large amount of high-temperature exhaust gas and blast furnace ash mixed therein are generated. The valve 11 is opened so that the flue 6 is in a smooth state. The capture box 3 is provided to cooperate with the flue 6 to receive the high-temperature exhaust gas and mixed blast furnace ash discharged from the blast furnace body 1, and the valve 11 is closed. The exhaust gas entering the capture box 3 is squeezed by pushing the pressure plate 5 by starting the cylinder 4. The filter screen 7 is provided on one side of the capture box 3 to filter the solid particles and impurities in the exhaust gas to ensure that the exhaust gas discharged is cleaner. At this time, the blast furnace ash is located on the left side of the filter screen 7. The capture box 3 is provided with an outlet 8 on the side close to the filter screen 7. A recovery box 9 is provided at the outlet 8 to collect the blast furnace ash after filtering by the filter screen 7. The blast furnace ash usually contains a certain amount of combustible substances and heat energy. The boiler can capture and recycle these blast furnace ashes, so that the combustible substances therein can be burned again and the heat energy therein can be recovered at the same time. This can not only reduce energy waste, but also improve the energy utilization efficiency of the entire system. For enterprises, this means reducing energy consumption costs and improving economic benefits.

[0028] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A waste heat utilization boiler with a blast furnace ash capture and recovery function, comprising a furnace body (1) and a furnace door (2), characterized in that: A capture box (3) is fixedly mounted on the upper end of the furnace body (1), a cylinder (4) is fixedly mounted on the left end of the capture box (3), a pressure plate (5) is fixedly mounted on the output end of the cylinder (4), a flue (6) is fixedly mounted on the lower end of the capture box (3), the capture box (3) is connected to the furnace body (1) through the flue (6), a filter screen (7) is arranged on the right part of the inner cavity of the capture box (3), an outlet (8) is opened on the right side of the lower end of the capture box (3), a recovery box (9) is placed on the right side of the upper end of the furnace body (1), and the upper end of the recovery box (9) is in contact with the outlet (8).

2. A waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: Four supporting legs (10) are fixedly mounted on the lower part of the furnace body (1).

3. The waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: The outer surface of the flue (6) is provided with a valve (11).

4. The waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: The front side of the capture box (3) is provided with a sealed viewing window (12).

5. The waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: A bolt (13) is movably inserted and connected on the right sides of both the front and rear ends of the capture box (3), and one end of the bolt (13) is against the filter screen (7).

6. The waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: The pressing plate (5) and the filter screen (7) maintain a parallel position relationship.

7. The waste heat utilization boiler with blast furnace ash capture and recovery function according to claim 1, characterized in that: The pressing plate (5) is arranged in a square shape.

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