Waste heat recovery gas hot blast stove

Abstract

The utility model relates to the technical field of hot blast stove waste heat recovery, and discloses a waste heat recovery gas hot blast stove which comprises a base, a box body is installed on the base, and a stove body is arranged in the middle of the box body. The utilization cavities are formed in the two sides of the box body, one end of each utilization cavity is connected with the furnace body through a waste gas output pipe, water tanks are arranged on the two sides of the box body, a heat conduction part is arranged in each utilization cavity, a movable part is arranged in each heat conduction part, and each movable part is connected with a driving part; high-temperature waste gas generated by the hot-blast stove enters the utilization cavity through the waste gas output pipe, the high-temperature waste gas can play a role in heat preservation of the stove body in the process of passing through the utilization cavity, and heat in the high-temperature waste gas passing through the utilization cavity can also be absorbed in cooperation with the heat conduction component. And after the hot-blast stove stops, the movable part is driven by the driving part to make contact with the outer wall of the stove body, and then the heat on the stove wall of the hot-blast stove is absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery of hot blast furnaces, in particular to a waste heat recovery gas-fired hot blast furnace. Background Art

[0002] Hot blast furnace is a thermal power machine. It began to be widely used in my country 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 furnaces. They are divided into hand-burning and machine-burning according to the coal adding method, and are divided into coal, oil, gas furnaces, etc. according to the type of fuel. After the fuel in the hot blast furnace is burned, it will produce exhaust gas. The temperature of the exhaust gas is relatively high. In order to avoid wasting the high-temperature heat in the exhaust gas, the water in the water tank is generally heated by the high-temperature exhaust gas to utilize the heat in the exhaust gas. However, the existing technology only heats the water by the waste heat of the exhaust gas. The waste heat utilization method is relatively single and cannot fully utilize the waste heat of the hot blast furnace.

[0003] Therefore, those skilled in the art have proposed a waste heat recovery gas hot air furnace to solve the problems raised in the above background. Utility Model Content

[0004] The utility model aims to provide a waste heat recovery gas hot air furnace to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A waste heat recovery gas hot blast furnace, comprising a base, a box body installed on the base, and a furnace body arranged in the middle of the box body; it also includes: utilization chambers opened on both sides of the box body, one end of the utilization chamber is connected to the furnace body through an exhaust gas output pipe, and the other end of the utilization chamber is fixedly connected to the exhaust pipe, water tanks are opened on both sides of the box body, and a water inlet pipe and a water outlet pipe are arranged on the water tank, a plurality of groups of equally spaced heat-conducting components are arranged in the utilization chamber, the heat-conducting components are used to absorb heat from high-temperature exhaust gas entering the utilization chamber and transport the heat to the water tank, movable components are arranged in the heat-conducting components, the movable components are connected to a driving component, and the driving component is used to drive the movable components so that the movable components fit the outer wall of the furnace body, thereby utilizing the heat on the furnace wall of the hot blast furnace after it is stopped.

[0007] As a further solution of the utility model: the heat-conducting component includes a plurality of groups of equally spaced heat-absorbing plates installed in the cavity, a plurality of holes for high-temperature exhaust gas to pass through are provided on the heat-absorbing plates, the heat-conducting blocks are fixedly connected to the fixed heat-conducting rods, and one end of the fixed heat-conducting rods penetrates into the water tank.

[0008] As a further solution of the utility model: the part of the fixed heat-conducting rod located in the water tank is installed with symmetrically distributed heat dissipation plates, and heat dissipation fins are installed at equal intervals on both sides of the heat dissipation plate.

[0009] As a further solution of the utility model: a heat preservation plate which is in contact with the furnace body is arranged in the box body.

[0010] As a further solution of the utility model: the movable component includes a movable heat-conducting rod slidably connected to the fixed heat-conducting rod, a heat-absorbing block is installed at one end of the movable heat-conducting rod passing through the insulation board, and a screw threadedly connected to the movable heat-conducting rod is arranged inside the fixed heat-conducting rod.

[0011] As a further solution of the utility model: the driving component includes brackets installed on both sides of the box body, a cylinder is installed on the bracket, the cylinder is fixedly connected to a movable rod, and the movable rod is installed with racks distributed at equal intervals, and one end of the screw rod passing through the box body is installed with a gear meshing with the rack.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a waste heat recovery gas hot blast furnace, and the high-temperature exhaust gas generated by the hot blast furnace enters the utilization chamber through the exhaust gas output pipe. The high-temperature exhaust gas can keep the furnace body warm during the process of passing through the utilization chamber, and the heat-conducting components can also absorb the heat in the high-temperature exhaust gas passing through the utilization chamber, and transfer the heat to the water tank to heat the water, and when the hot blast furnace stops, the driving components drive the movable components to contact the outer wall of the furnace body, thereby absorbing the heat on the furnace wall of the hot blast furnace, thereby improving the utilization efficiency of the waste heat of the hot blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the structure of a waste heat recovery gas hot air furnace.

[0014] Figure 2 The present invention is a schematic diagram of the structure of a fixed heat-conducting rod and a movable heat-conducting rod in a waste heat recovery gas hot blast furnace.

[0015] Figure 3 The present invention is a schematic diagram of the structure of a heat-conducting component in a waste heat recovery gas hot blast furnace.

[0016] Figure 4 for Figure 1 A partial enlarged view of point A in the middle.

[0017] In the figure: 1. base; 2. box body; 3. furnace body; 4. exhaust gas output pipe; 5. utilization chamber; 6. exhaust pipe; 7. insulation board; 8. water tank; 9. water inlet pipe; 10. fixed heat-conducting rod; 11. heat-conducting block; 12. heat-absorbing plate; 13. movable heat-conducting rod; 14. heat-absorbing block; 15. screw; 16. gear; 17. movable rod; 18. rack; 19. bracket; 20. cylinder; 21. heat sink; 22. heat sink; 23. water outlet pipe. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] See also Figure 1-Figure 4 A waste heat recovery gas hot air furnace comprises a base 1, a box body 2 is mounted on the base 1, and a furnace body 3 is arranged in the middle of the box body 2; and further comprises:

[0020] A utilization chamber 5 is opened on both sides of the box body 2, one end of the utilization chamber 5 is connected to the furnace body 3 through the exhaust gas output pipe 4, and the other end of the utilization chamber 5 is fixedly connected to the exhaust pipe 6. Water tanks 8 are opened on both sides of the box body 2, and the water tanks 8 are provided with a water inlet pipe 9 and a water outlet pipe 23. A plurality of groups of equally spaced heat-conducting components are arranged in the utilization chamber 5, and the heat-conducting components are used to absorb the heat in the high-temperature exhaust gas entering the utilization chamber 5 and transport the heat to the water tank 8. Active components are arranged in the heat-conducting components, and the active components are connected to the driving components, and the driving components are used to drive the active components so that the active components fit with the outer wall of the furnace body 3, thereby utilizing the heat on the furnace wall of the hot blast furnace after it is stopped.

[0021] The high-temperature exhaust gas generated by the hot blast furnace enters the utilization chamber 5 through the exhaust gas output pipe 4. The high-temperature exhaust gas can keep the furnace body 3 warm during the process of passing through the utilization chamber 5. The heat-conducting components can also absorb the heat in the high-temperature exhaust gas passing through the utilization chamber 5, and transfer the heat to the water tank 8 to heat the water. When the hot blast furnace stops, the driving components drive the movable components to contact the outer wall of the furnace body 3, thereby absorbing the heat on the wall of the hot blast furnace, thereby improving the utilization efficiency of the waste heat of the hot blast furnace.

[0022] The heat-conducting component includes a plurality of groups of equally spaced heat-absorbing plates 12 installed in the cavity 5, and a plurality of holes for high-temperature exhaust gas to pass through are provided on the heat-absorbing plates 12. The heat-conducting blocks 11 are fixedly connected to the fixed heat-conducting rods 10, and one end of the fixed heat-conducting rods 10 penetrates into the water tank 8.

[0023] The portion of the fixed heat-conducting rod 10 located in the water tank 8 is installed with symmetrically distributed heat dissipation plates 21 , and heat dissipation fins 22 are installed at equal intervals on both sides of the heat dissipation plates 21 .

[0024] The box body 2 is provided with a heat preservation plate 7 which is in contact with the furnace body 3 .

[0025] The movable part includes a movable heat-conducting rod 13 slidably connected to the fixed heat-conducting rod 10 , and a heat-absorbing block 14 is installed at one end of the movable heat-conducting rod 13 passing through the insulation board 7 . The fixed heat-conducting rod 10 is provided with a screw 15 threadedly connected to the movable heat-conducting rod 13 .

[0026] The driving component includes a bracket 19 installed on both sides of the box body 2, a cylinder 20 is installed on the bracket 19, the cylinder 20 is fixedly connected to the movable rod 17, and the movable rod 17 is installed with racks 18 distributed at equal intervals. The end of the screw rod 15 passing through the box body 2 is installed with a gear 16 meshing with the rack 18.

[0027] The working principle of the utility model is as follows: when in use, the high-temperature exhaust gas generated by the hot blast furnace enters the utilization chamber 5 through the exhaust gas output pipe 4, and the high-temperature exhaust gas passes through the utilization chamber 5 and is finally discharged from the exhaust pipe 6 before being purified and discharged. In the process of the high-temperature exhaust gas passing through the utilization chamber 5, the heat in the high-temperature exhaust gas can form a heat preservation layer on the outside of the furnace body 3, and when the high-temperature exhaust gas passes through the heat absorbing plate 12 in turn, the heat absorbing plate 12 absorbs the heat of the high-temperature exhaust gas, and transmits the heat to the fixed heat-conducting rod 10 through the heat-conducting block 11, and then conducts the heat to the heat dissipation plate 21, and then conducts it to the heat sink 22, and the water in the water tank 8 is heated by the conducted heat, and When the hot blast furnace stops, the cylinder 20 is started to drive the movable rod 17 to move, and the rack 18 is used to drive the gear 16 to rotate, driving the screw 15 to rotate, and then driving the movable heat-conducting rod 13 to move, so that the heat-absorbing block 14 at the end of the movable heat-conducting rod 13 is attached to the outer wall surface of the furnace body 3, and the heat is absorbed by the heat-absorbing block 14. The heat is transferred to the fixed heat-conducting rod 10 through the movable heat-conducting rod 13, and the heat is then used to heat the water in the water tank 8. In addition to using the high-temperature exhaust gas of the hot blast furnace to heat the water tank 8, the device also uses the heat on the wall of the hot blast furnace after it is stopped, thereby improving the utilization efficiency of the waste heat of the hot blast furnace.

[0028] The utility model provides a waste heat recovery gas hot blast furnace, the high-temperature exhaust gas generated by the hot blast furnace enters the utilization chamber 5 through the exhaust gas output pipe 4, the high-temperature exhaust gas can keep the furnace body 3 warm during passing through the utilization chamber 5, and the heat-conducting components can also absorb the heat in the high-temperature exhaust gas passing through the utilization chamber 5, and transport the heat to the water tank 8 to heat the water, and when the hot blast furnace stops, the driving components drive the movable components to contact the outer wall of the furnace body 3, thereby absorbing the heat on the furnace wall of the hot blast furnace, thereby improving the utilization efficiency of the waste heat of the hot blast furnace.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste heat recovery gas hot air furnace, comprising a base, a box body is installed on the base, and a furnace body is arranged in the middle of the box body. It is characterized in that Also includes: A utilization chamber is opened on both sides of the box body, one end of the utilization chamber is connected to the furnace body through an exhaust gas output pipe, and the other end of the utilization chamber is fixedly connected to the exhaust pipe. Water tanks are opened on both sides of the box body, and water inlet pipes and outlet pipes are arranged on the water tanks. Multiple groups of equally spaced heat-conducting components are arranged in the utilization chamber, and the heat-conducting components are used to absorb heat from the high-temperature exhaust gas entering the utilization chamber and transport the heat to the water tank. Active components are arranged in the heat-conducting components, and the active components are connected to driving components, and the driving components are used to drive the active components so that the active components fit with the outer wall of the furnace body, thereby utilizing the heat on the furnace wall of the hot blast furnace after it is stopped.

2. A waste heat recovery gas hot air furnace according to claim 1, It is characterized in that The heat-conducting component includes a plurality of groups of equally spaced heat-absorbing plates installed in the cavity, a plurality of holes for high-temperature exhaust gas to pass through are arranged on the heat-absorbing plates, the heat-conducting blocks are fixedly connected to the fixed heat-conducting rods, and one end of the fixed heat-conducting rods penetrates into the water tank.

3. A waste heat recovery gas hot air furnace according to claim 2, It is characterized in that The portion of the fixed heat-conducting rod located in the water tank is installed with symmetrically distributed heat dissipation plates, and heat dissipation fins distributed at equal intervals are installed on both sides of the heat dissipation plates.

4. A waste heat recovery gas hot air furnace according to claim 1, It is characterized in that The box body is provided with a heat preservation plate which is in contact with the furnace body.

5. A waste heat recovery gas hot air furnace according to claim 2, It is characterized in that The movable component comprises a movable heat-conducting rod slidably connected to the fixed heat-conducting rod, a heat-absorbing block is installed on one end of the movable heat-conducting rod passing through the insulation board, and a screw threadedly connected to the movable heat-conducting rod is arranged in the fixed heat-conducting rod.

6. A waste heat recovery gas hot air furnace according to claim 5, It is characterized in that The driving component includes brackets installed on both sides of the box body, a cylinder is installed on the bracket, the cylinder is fixedly connected to a movable rod, and the movable rod is installed with racks distributed at equal intervals. One end of the screw rod passing through the box body is installed with a gear meshing with the rack.

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