A magnesia sintering suspension furnace with flue gas waste heat recovery

Abstract

The magnesia sintering suspension furnace for recovering waste heat from flue gas comprises a suspension furnace body, a flue gas channel is installed on the top of the suspension furnace body, a control valve is arranged on the flue gas channel, a heat exchange mechanism is installed in the middle section of the flue gas channel, a discharge port is installed on the top of the flue gas channel, a dust collecting device is installed on one side of the flue gas channel, an auxiliary heat exchange pipe is connected to the heat exchange mechanism, an oxygen inlet pipe runs through the center of the auxiliary heat exchange pipe, and the oxygen inlet pipe is introduced into the suspension furnace body. The utility model recovers waste heat in the flue gas through water heat exchange by installing a heat exchange mechanism on the flue gas channel of the suspension furnace body, and at the same time filters large particles of dust in the flue gas and collects them uniformly through the dust collecting device, which not only reduces the consumption and waste of waste heat, but also uses the waste heat to preheat the oxygen in the lactation suspension furnace body, thereby reducing resource waste and improving waste heat recovery effect.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension furnaces, in particular to a magnesia sintering suspension furnace for recovering flue gas waste heat. Background Art

[0002] Suspension smelting technology refers to placing the melt in a magnetic field during the smelting process, where the electromagnetic force and gravity cancel each other out, causing the melt to be in a suspended state, and then heating the melt at a high temperature to produce the required material. During the sintering process of magnesia sand, a large amount of smoke will be generated in the suspension furnace. A large amount of smoke contains high temperature and a large amount of smoke. The treatment of a large amount of smoke in the existing technology is time-consuming and labor-intensive, and the waste heat recovery of the smoke is not thorough, making it inconvenient to use.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to provide a magnesia sand sintering suspension furnace with flue gas waste heat recovery to solve the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a magnesia sand sintering suspension furnace for recovering waste heat from flue gas. A heat exchange mechanism is installed on the flue gas channel of the suspension furnace body to recover the waste heat in the flue gas through water heat exchange, and at the same time, large particles of dust in the flue gas are filtered and collected uniformly through a dust collection device, which not only reduces the consumption and waste of waste heat, but also utilizes the waste heat to preheat the oxygen in the lactation suspension furnace body, thereby reducing resource waste and improving the waste heat recovery effect.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical means.

[0006] Provided is a magnesia sintering suspension furnace for flue gas waste heat recovery, comprising a suspension furnace body, a flue gas channel installed on the top of the suspension furnace body, a control valve arranged on the flue gas channel, a heat exchange mechanism installed in the middle of the flue gas channel, a discharge port installed on the top of the flue gas channel, a dust collection device installed on one side of the flue gas channel, an auxiliary heat exchange pipe connected to the heat exchange mechanism, an oxygen inlet pipe passing through the center of the auxiliary heat exchange pipe, and the oxygen inlet pipe passing into the suspension furnace body;

[0007] The heat exchange mechanism includes two groups of water storage tanks, a heat exchange pipeline is arranged between the two groups of water storage tanks, the heat exchange pipeline is sleeved on the outside of the flue gas channel, two groups of circulation pipelines are respectively installed on the two groups of water storage tanks, a circulation water pump is installed on the circulation pipeline, a diversion valve is installed under the circulation water pump, and an auxiliary heat exchange pipe is installed at the other end of the diversion valve;

[0008] The auxiliary heat exchange pipe comprises a temporary liquid storage tank, a spiral circulation pipe is arranged inside the temporary liquid storage tank, and the spiral circulation pipe is sleeved on the outside of the oxygen inlet pipe.

[0009] Specifically, the dust collecting device includes an external vacuum cleaner, to which two sets of upper and lower adsorption pipelines are connected, and the adsorption pipelines run through the flue gas channel.

[0010] Specifically, the heat exchange pipeline includes a bending portion and a water pipe. The water pipe and the bending portion are arranged at intervals, and the water pipes are stacked and installed in parallel.

[0011] Furthermore, a smoke filter plate is installed inside the smoke channel, the smoke filter plate is installed in parallel inside the smoke channel, and the smoke filter plate corresponds to the adsorption pipeline.

[0012] The utility model installs a heat exchange mechanism on the smoke channel of the suspension furnace body to recycle the waste heat in the smoke through water heat exchange, and at the same time filters the large particles of dust in the smoke and collects them uniformly through a dust collecting device, which not only reduces the consumption and waste of waste heat, but also uses the waste heat to preheat the oxygen in the lactation suspension furnace body, thereby reducing resource waste and improving the waste heat recovery effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0014] Figure 1 The utility model is a front view of a magnesia sintering suspension furnace for recovering waste heat from flue gas.

[0015] Figure 2 It is a stereoscopic diagram of a heat exchange mechanism of a magnesia sintering suspension furnace for recovering waste heat from flue gas according to the utility model.

[0016] from Figure 1 to Figure 2 Including:

[0017] 1. Suspended furnace body;

[0018] 2. Smoke duct;

[0019] 3. Control valve;

[0020] 4. Heat exchange mechanism;

[0021] 5. Discharge port;

[0022] 6. Dust collection device;

[0023] 7. Auxiliary heat exchange tube;

[0024] 8. Oxygen inlet pipe;

[0025] 9. Water storage tank;

[0026] 10. Circulation pipeline;

[0027] 11. Circulating water pump;

[0028] 12. Diversion valve;

[0029] 13. Auxiliary heat exchange tube;

[0030] 14. Temporary liquid storage tank;

[0031] 15. Spiral circulation tube;

[0032] 16. External vacuum cleaner;

[0033] 17. Adsorption pipeline;

[0034] 18. Bending portion;

[0035] 19. Clear the water pipes;

[0036] 20. Smoke filter plate. DETAILED DESCRIPTION

[0037] The utility model is further described in conjunction with the following embodiments.

[0038] Example 1.

[0039] like Figure 1-2 As shown, a magnesia sintering suspension furnace for recovering waste heat from flue gas comprises a suspension furnace body 1, a flue gas channel 2 is installed on the top of the suspension furnace body 1, a control valve 3 is arranged on the flue gas channel 2, a heat exchange mechanism 4 is installed in the middle section of the flue gas channel 2, a discharge port 5 is installed on the top of the flue gas channel 2, a dust collecting device 6 is installed on one side of the flue gas channel 2, an auxiliary heat exchange pipe 137 is connected to the heat exchange mechanism 4, an oxygen inlet pipe 8 is passed through the center of the auxiliary heat exchange pipe 137, and the oxygen inlet pipe 8 is introduced into the suspension furnace body 1.

[0040] The flue gas channel 2 installed on the suspension furnace body 1 can discharge the flue gas generated by the sintering of magnesia sand in the suspension furnace, and at the same time, the flue gas is discharged through the control valve 3. The heat exchange mechanism 4 installed inside the flue gas channel 2 can collect a large amount of heat in the flue gas for heat exchange. At the same time, the dust in the flue gas will be collected and temporarily stored by the dust blowing collection device. The heat collected in the heat exchange mechanism 4 can preheat the oxygen inlet pipe 8 through the auxiliary heat exchange pipe 137, thereby reducing energy consumption and improving the preheating recovery efficiency.

[0041] The heat exchange mechanism 4 includes two groups of water storage tanks 9, a heat exchange pipeline is arranged between the two groups of water storage tanks 9, the heat exchange pipeline is sleeved on the outside of the flue gas channel 2, two groups of circulation pipelines 10 are respectively installed on the two groups of water storage tanks 9, a circulating water pump 11 is installed on the circulating pipeline 10, a diversion valve 12 is installed under the circulating water pump 11, and an auxiliary heat exchange pipe 137 is installed at the other end of the diversion valve.

[0042] The heat exchange pipelines installed in the two groups of water storage tanks 9 are added with circulating water required for heat exchange, which can perform heat exchange treatment with the flue gas channel 2. The circulating water after heat exchange can be pumped in the circulation pipeline 10 by the circulating water pump 11, and the diversion valve 12 installed under the circulating water pump 11 can divert the heated circulating water to the auxiliary heat exchange pipe 137, so that the auxiliary heat exchange pipe 137 can heat the oxygen inlet pipe 8.

[0043] The auxiliary heat exchange pipe 137 includes a temporary liquid storage tank 14, and a spiral circulation pipe 15 is arranged inside the temporary liquid storage tank 14. The spiral circulation pipe 15 is sleeved on the outside of the oxygen inlet pipe 8. The circulating flowing water after heat exchange in the temporary liquid storage tank 14 is pumped by the circulating water pump 11 and cooperated with the diversion valve 12 to exchange heat to the spiral circulation pipe 15. The setting of the spiral circulation pipe 15 can increase the contact area and increase the heat exchange efficiency, which is convenient for the recovery and utilization of waste heat.

[0044] The dust collecting device 6 includes an external vacuum cleaner 16 , to which are connected two sets of upper and lower adsorption pipes 17 , which run through the flue gas passage. The two sets of adsorption pipes 17 in the dust collecting device 6 absorb large particles of smoke in the flue gas passage 2 , which are collected by the external vacuum cleaner 16 .

[0045] The heat exchange pipeline includes a bending portion 18 and a water pipe 19. The water pipe 19 and the bending portion 18 are installed in an alternate arrangement, and the water pipes 19 are installed in parallel and stacked. The combination of the bending pipeline and the water pipe 19 can increase the contact area with the smoke channel and increase the heat exchange effect.

[0046] A smoke filter plate 20 is installed inside the smoke channel 2. The smoke filter plate 20 is installed parallel to the smoke channel 2, and the smoke filter plate 20 corresponds to the adsorption pipeline 17. The smoke filter plate 20 can filter the smoke in the smoke channel 2. Since the smoke filter plate 20 corresponds to the adsorption pipeline 17, large particles of smoke in the smoke filter plate 20 can be absorbed, which is convenient for smoke filtering and discharge.

[0047] During the production process, a heat exchange mechanism 4 is installed on the flue gas channel 2 of the suspension furnace body 1 to recover the waste heat in the flue gas through water heat exchange, and at the same time, large particles of dust in the flue gas are filtered and collected uniformly through a dust collection device 6, which not only reduces the consumption and waste of waste heat, but also uses the waste heat to preheat the oxygen in the lactation suspension furnace body 1, thereby reducing resource waste and improving the waste heat recovery effect.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A magnesia sintering suspension furnace with flue gas waste heat recovery, characterized in that: It comprises a suspension furnace body, a smoke channel is installed on the top of the suspension furnace body, a control valve is arranged on the smoke channel, a heat exchange mechanism is installed in the middle of the smoke channel, a discharge port is installed on the top of the smoke channel, a dust collection device is installed on one side of the smoke channel, an auxiliary heat exchange pipe is connected to the heat exchange mechanism, an oxygen inlet pipe is passed through the center of the auxiliary heat exchange pipe, and the oxygen inlet pipe is introduced into the suspension furnace body; The heat exchange mechanism comprises two groups of water storage tanks, a heat exchange pipeline is arranged between the two groups of water storage tanks, the heat exchange pipeline is sleeved on the outside of the flue gas channel, two groups of circulation pipelines are respectively installed on the two groups of water storage tanks, a circulation water pump is installed on the circulation pipeline, a diversion valve is installed under the circulation water pump, and the auxiliary heat exchange pipe is installed at the other end of the diversion valve; The auxiliary heat exchange pipe comprises a temporary liquid storage tank, a spiral circulation pipe is arranged inside the temporary liquid storage tank, and the spiral circulation pipe is sleeved on the outside of the oxygen inlet pipe.

2. The magnesia sintering suspension furnace for recovering waste heat from flue gas according to claim 1, characterized in that: The dust collecting device comprises an external dust collector, and the external dust collector is connected with two groups of upper and lower adsorption pipelines, and the adsorption pipelines run through the smoke channel.

3. The magnesia sintering suspension furnace for recovering waste heat from flue gas according to claim 2, characterized in that: The heat exchange pipeline comprises a bending portion and a water pipe. The water pipe and the bending portion are arranged and installed at intervals, and the water pipes are stacked and installed in parallel.

4. The magnesia sintering suspension furnace for recovering waste heat from flue gas according to claim 3, characterized in that: A smoke filter plate is installed inside the smoke channel. The smoke filter plate is installed in parallel inside the smoke channel, and the smoke filter plate corresponds to the adsorption pipeline.

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