Waste heat utilization device for reduction furnace boiler

Abstract

The utility model relates to the technical field of improvement of feeding and discharging devices and filtering methods of reduction furnaces, and discloses a waste heat utilization device for a reduction furnace boiler, which comprises a reboiler. Hot water generated by the reboiler and the gas-liquid separator enters the connecting pipe from the second conveying pipe, then the hot water enters the desalting water tank of the reduction furnace, when connection between the connecting pipe and the second conveying pipe needs to be disconnected, a connecting disc is rotated, and the rotating connecting disc drives a fixing block to rotate in a fixing groove, so that the desalting water tank of the reduction furnace is fixed. When the fixing block rotates to the position of the moving groove, the spring is extruded by the connecting disc and the pushing disc, the connecting disc and the fixing block are popped out by the extrusion spring, and then the connecting pipe is taken out. And directly conveying to a demineralized water tank of the reduction furnace for use. The steam consumption of the deaerator of the reduction furnace can be reduced, and the power consumption of a desalting water pump of a chemical water station is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to reduction furnace inlet and outlet device and filtration method improvement technical field, concretely is a kind of waste heat utilization device for reduction furnace boiler. BACKGROUND

[0002] Reduction furnace is the core equipment of magnesium production, and external heating horizontal reduction tank reduction furnace is generally used at home and abroad. The traditional metal magnesium reduction furnace generally adopts the structure of return heat heating reduction tank. The flame and flue gas in the reduction furnace of this traditional structure turn over the fire wall into the hearth, pass through the reduction tank from top to bottom, and are quickly discharged from the hearth through the fire hole, with a discharge smoke temperature of about 1200℃. The energy is wasted seriously because it cannot be well recycled. In addition, the traditional metal magnesium reduction furnace uses raw coal as fuel, which has low combustion efficiency and serious pollution. Moreover, this combustion method leads to uneven internal temperature of the metal magnesium reduction furnace hearth, and the combustion temperature control is not flexible, resulting in that the service life of the reduction tank is generally too short, and the quality of the finished metal magnesium produced is not high.

[0003] After searching, the utility model patent publication No. CN 217424012 U discloses a kind of waste heat recovery device of reduction furnace, relate to polysilicon production technical field.The utility model discloses a reduction furnace body, flash evaporation assembly is arranged on the tail gas pipe outer wall of reduction furnace body, and preheating assembly is arranged at one end of tail gas pipe;Flash evaporation assembly includes first connecting pipe, coil pipe and flash tank, and flash tank is connected with water storage tank through first connecting pipe and coil pipe, and coil pipe is sleeved on the outer wall of tail gas pipe;Preheating assembly includes air inlet pipe, upper cover plate and water storage tank, and one side of tail gas pipe is connected with water storage tank through air inlet pipe.The utility model utilizes flash evaporation assembly and preheating assembly, preliminarily recycles and utilizes the waste heat of tail gas in coil pipe in flash evaporation assembly, to produce high-temperature steam, and further recycles and utilizes the waste heat of tail gas in tail gas pipe through first connecting pipe and water storage tank in preheating assembly, to heat water, saving resources.

[0004] The low-pressure steam waste heat after the use of the existing desulfurization coarse regeneration and fine regeneration cannot be recycled, and the circulating cooling water is needed to cool the cooling hot water. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of waste heat utilization device for reduction furnace boiler, solve the problem that the low-pressure steam waste heat after the use of the desulfurization coarse regeneration and fine regeneration cannot be recycled in the background art.

[0006] The embodiment of the application provides a waste heat utilization device for a reduction furnace boiler, which comprises a reboiler, a first conveying pipe fixedly connected to the right end of the surface of the reboiler, a gas-liquid separator fixedly connected to the right end of the surface of the first conveying pipe, a second conveying pipe connected to the right end of the surface of the gas-liquid separator, a connecting device fixedly connected to the rear end of the surface of the second conveying pipe, a connecting pipe fixedly connected to the rear end of the surface of the connecting device, a reduction furnace desalted water tank fixedly connected to the rear end of the surface of the connecting pipe, a pure water tank connected to the right end of the surface of the second conveying pipe and a desalted water tank fixedly connected to the right end of the surface of the pure water tank.

[0007] By adopting the above technical scheme, hot water generated through the reboiler and the gas-liquid separator enters the inside of the connecting pipe from the second conveying pipe, and then the hot water enters the reduction furnace desalted water tank. When the connection between the connecting pipe and the second conveying pipe needs to be disconnected, the connecting disc is then rotated, the rotating connecting disc drives the fixed block to rotate in the fixed groove, when the fixed block rotates to the moving groove position, the fixed block is popped out together with the connecting disc by the extrusion spring of the connecting disc and the pushing disc, and then the connecting pipe is taken out.

[0008] Optionally, the inside left end of the connecting device is fixedly connected with a spring, the left end of the surface of the spring is fixedly connected with a pushing disc, the left end of the surface of the pushing disc is provided with a connecting disc, the right end of the surface of the connecting disc is fixedly connected with a fixed block, the inside left end of the connecting device is provided with a moving groove, the inside left end of the connecting device is provided with a fixed groove, and the surface of the connecting disc is fixedly connected with a connecting port.

[0009] By adopting the above technical scheme, the parts are conveniently connected, and the installation and disassembly are quickly performed.

[0010] Optionally, the number of the springs is multiple groups, and the multiple groups of the springs are distributed around the distribution center of the pushing disc.

[0011] By adopting the above technical scheme, the parts are pushed, and the overall supporting force is guaranteed.

[0012] Optionally, the size of the fixed block is similar to that of the fixed groove.

[0013] By adopting the above technical scheme, shaking in the connection process is avoided.

[0014] Optionally, the right end of the surface of the second conveying pipe is provided with a first valve.

[0015] By adopting the above technical scheme, the flowing water is controlled.

[0016] Optionally, the front end of the surface of the connecting pipe is provided with a second valve.

[0017] By adopting the above technical scheme, the flowing water is controlled.

[0018] Optionally, the number of the fixed blocks is four groups, and the four groups of the fixed blocks are distributed around the center of the connecting disc.

[0019] By adopting the above technical scheme, the part is limited.

[0020] Optionally, the material of the spring is stainless steel.

[0021] By adopting the above technical scheme, rust marks on the surface of the spring are avoided.

[0022] Compared with the prior art, the technical scheme of the application has the following beneficial effects:

[0023] The technical scheme of the application is that hot water generated by the reboiler and the gas-liquid separator enters the inside of the connecting pipe from the second conveying pipe, and then the hot water enters the desalting water tank of the reduction furnace. When it is needed to disconnect the connecting pipe and the second conveying pipe, the connecting disc is then rotated, and the rotating connecting disc drives the fixed block to rotate in the fixed groove. When the fixed block rotates to the moving groove position, the fixed block is extruded by the connecting disc and the pushing disc spring, the extruded spring extrudes the connecting disc and the fixed block, and then the connecting pipe is taken out. Through the modification, a waste heat utilization point is added, and the waste heat after the desulfurization reboiler steam is used is directly conveyed to the desalting water tank of the reduction furnace for use without being cooled by the plate heat exchanger. The reduction furnace oxygen remover can reduce steam consumption and reduce the power consumption of the desalting water pump of the chemical water station. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the accompanying drawings:

[0025] Figure 1 It is a whole structure schematic view of the waste heat utilization device for the reduction furnace boiler of the application;

[0026] Figure 2 It is a connecting device structure schematic view of the waste heat utilization device for the reduction furnace boiler of the application;

[0027] Figure 3 It is a connecting port structure schematic view of the waste heat utilization device for the reduction furnace boiler of the application;

[0028] Figure 4 It is a spring structure schematic view of the waste heat utilization device for the reduction furnace boiler of the application.

[0029] In the figure: 1, reboiler; 2, first conveying pipe; 3, gas-liquid separator; 4, second conveying pipe; 5, first valve; 6, second valve; 7, connecting pipe; 8, connecting device; 801, spring; 802, push disc; 803, moving groove; 804, fixed groove; 805, connecting disc; 806, fixed block; 807, connecting port; 9, demineralized water tank; 10, pure water tank; 11, reduction furnace demineralized water tank. DETAILED DESCRIPTION

[0030] Please refer to Figures 1-4 , the utility model provides a technical scheme: a kind of waste heat utilization device for reduction furnace boiler, including reboiler 1, the right end of the surface side of reboiler 1 is fixedly connected with first conveying pipe 2, the right end of the surface side of first conveying pipe 2 is fixedly connected with gas-liquid separator 3, the right end of the surface side of gas-liquid separator 3 is connected with second conveying pipe 4, the rear end of the surface side of second conveying pipe 4 is fixedly connected with connecting device 8, the rear end of the surface side of connecting device 8 is fixedly connected with connecting pipe 7, the rear end of the surface side of connecting pipe 7 is fixedly connected with reduction furnace demineralized water tank 11, the right end of the surface side of second conveying pipe 4 is connected with pure water tank 10, the right end of the surface side of pure water tank 10 is fixedly connected with demineralized water tank 9.

[0031] In the above technical scheme, hot water is generated by reboiler 1 and gas-liquid separator 3 and enters the inside of connecting pipe 7 from second conveying pipe 4, and then the hot water enters reduction furnace demineralized water tank 11, when it is needed to disconnect connecting pipe 7 and second conveying pipe 4, then rotating connecting disc 805, rotating connecting disc 805 drives fixed block 806 to rotate in fixed groove 804, when fixed block 806 rotates to the position of moving groove 803, it is pressed by spring 801 driven by connecting disc 805 and push disc 802, spring 801 pops out connecting disc 805 and fixed block 806, and then connecting pipe 7 is taken out.

[0032] In the technical scheme of the utility model, as shown in Figure 3 and Figure 4 and Figure 2 , the left end of the inside of connecting device 8 is fixedly connected with spring 801, the left end of the surface side of spring 801 is fixedly connected with push disc 802, the left end of the surface side of push disc 802 is provided with connecting disc 805, the right end of the surface side of connecting disc 805 is fixedly connected with fixed block 806, the left end of the inside of connecting device 8 is provided with moving groove 803, the left end of the inside of connecting device 8 is provided with fixed groove 804, the surface lower end of connecting disc 805 is fixedly connected with connecting port 807, which is convenient for connecting parts and quickly disassembling and installing.

[0033] In the technical scheme of the utility model, as shown in Figure 4 , the number of spring 801 is multiple groups, and the multiple groups of spring 801 surround each other with the distribution center of push disc 802, which ensures the pushing of parts and the overall supporting force.

[0034] In the technical scheme of the utility model, as shown in Figure 3 With Figure 4 As shown, the size of the fixed block 806 is similar to the size of the fixed groove 804, avoiding shaking during connection.

[0035] In the technical scheme of the utility model, as shown in Figure 1 As shown, the surface right end of the second conveying pipe 4 is provided with a first valve 5 for controlling flowing water.

[0036] In the technical scheme of the utility model, as shown in Figure 1 As shown, the surface front end of the connecting pipe 7 is provided with a second valve 6 for controlling flowing water.

[0037] In the technical scheme of the utility model, as shown in Figure 3 As shown, the number of the fixed block 806 is four groups, and the four groups of fixed blocks 806 are distributed around the center of the connecting disc 805 to guarantee the limiting of the parts.

[0038] In the technical scheme of the utility model, as shown in Figure 4 As shown, the material of the spring 801 is stainless steel material to avoid rust on the surface of the spring 801 caused by long use.

[0039] In use, hot water generated by the reboiler 1 and the gas-liquid separator 3 enters the inside of the connecting pipe 7 from the second conveying pipe 4, and then the hot water enters the reduction furnace desalted water tank 11. When it is needed to disconnect the connecting pipe 7 and the second conveying pipe 4, the connecting disc 805 is then rotated, the rotating connecting disc 805 drives the fixed block 806 to rotate in the fixed groove 804, when the fixed block 806 rotates to the position of the moving groove 803, the fixed block 806 is extruded by the connecting disc 805 and the pushing disc 802, the extruded spring 801 pops out the connecting disc 805 and the fixed block 806, and then the connecting pipe 7 is taken out.

Claims

1. A waste heat utilization device for a reduction furnace boiler, comprising a reboiler (1), characterized in that: The right end of the surface side of the reboiler (1) is fixedly connected to a first delivery pipe (2), the right end of the surface side of the first delivery pipe (2) is fixedly connected to a gas-liquid separator (3), the right end of the surface side of the gas-liquid separator (3) is connected to a second delivery pipe (4), the rear end of the surface side of the second delivery pipe (4) is fixedly connected to a connecting device (8), the rear end of the surface side of the connecting device (8) is fixedly connected to a connecting pipe (7), the rear end of the surface side of the connecting pipe (7) is fixedly connected to a reduction furnace desalted water tank (11), the right end of the surface side of the second delivery pipe (4) is connected to a pure water tank (10), and the right end of the surface side of the pure water tank (10) is fixedly connected to a desalted water tank (9).

2. The waste heat utilization device for a reduction furnace boiler according to claim 1, characterized in that: The inner left end of the connecting device (8) is fixedly connected to a spring (801), the outer left end of the spring (801) is fixedly connected to a push disk (802), the outer left end of the push disk (802) is provided with a connecting disk (805), the outer right end of the connecting disk (805) is fixedly connected to a fixing block (806), the inner left end of the connecting device (8) is provided with a moving groove (803), the inner left end of the connecting device (8) is provided with a fixing groove (804), and the lower end of the surface of the connecting disk (805) is fixedly connected to a connecting port (807).

3. The waste heat utilization device for a reduction furnace boiler according to claim 2, characterized in that: There are multiple groups of springs (801), and the multiple groups of springs (801) surround each other with the distribution center of the push disk (802).

4. The waste heat utilization device for a reduction furnace boiler according to claim 2, characterized in that: The size of the fixing block (806) is similar to the size of the fixing slot (804).

5. The waste heat utilization device for a reduction furnace boiler according to claim 1, characterized in that: A first valve (5) is provided at the right end of the surface of the second delivery pipe (4).

6. The waste heat utilization device for a reduction furnace boiler according to claim 1, characterized in that: A second valve (6) is provided at the front end of the surface of the connecting pipe (7).

7. The waste heat utilization device for a reduction furnace boiler according to claim 2, characterized in that: There are four groups of the fixing blocks (806), and the four groups of the fixing blocks (806) surround each other with the connection disk (805) being the center of distribution.

8. The waste heat utilization device for a reduction furnace boiler according to claim 2, characterized in that: The material of the spring (801) is stainless steel.

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