Waste gas treatment heat storage oxidation furnace

Abstract

The utility model discloses a waste gas treatment heat storage oxidation furnace, which comprises a furnace shell, a gas inlet pipe fitting, a gas outlet pipe fitting and a purging pipe fitting, the furnace shell is enclosed by a flame-retardant heat insulation cotton pressing plate and a metal frame body, the inside of the furnace shell is divided into a combustion chamber and at least three heat storage chambers below the combustion chamber, grids are arranged at the bottoms of the heat storage chambers, and ceramic saddle rings are stacked on the grids. And a ceramic honeycomb plate is placed above the ceramic saddle ring. The furnace shell is defined by the flame-retardant heat insulation cotton pressing plate and the metal frame body, so that the furnace shell has a good heat preservation effect, and the heat loss of the heat storage oxidation furnace is reduced. A ceramic saddle ring and a ceramic honeycomb plate are sequentially stacked at the bottom of the heat storage chamber, and waste gas heat generated after combustion can be reserved for preheating new organic waste gas. And the flame-retardant heat insulation cotton pressing plate is matched with the ceramic saddle ring and the ceramic honeycomb plate, so that the heat storage oxidation furnace can realize high heat storage efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment equipment field, especially in kind of waste gas treatment regenerative oxidation furnace. BACKGROUND

[0002] In prior art, regenerative oxidation furnace is commonly used to treat organic waste gas. The principle of regenerative oxidation furnace treatment is to heat organic waste gas to above 760 DEG C, so that waste gas is oxidized and decomposed into carbon dioxide and water. Waste gas is first heated to near thermal oxidation temperature by heat storage body, and then enters combustion chamber to perform thermal oxidation. The temperature of the gas after oxidation is increased, and organic matter is basically converted into carbon dioxide and water. The purified gas passes through another heat storage body, and the temperature is decreased. After reaching the emission standard, it can be discharged. Different heat storage bodies are converted with time by switching valve or rotating device, and respectively perform heat absorption and heat release.

[0003] For waste gas treatment regenerative oxidation furnace, the heat storage efficiency is one of the key indicators for measuring the performance. The higher the heat storage efficiency is, the smaller the energy loss is, and the lower the operation cost of waste gas treatment regenerative oxidation furnace is. Moreover, in the process of treating organic waste gas by waste gas treatment regenerative oxidation furnace, organic waste gas is mixed with smoke dust, which may cause problems such as device blockage and gas blockage.

[0004] In view of this, the utility model provides a kind of waste gas treatment regenerative oxidation furnace to solve above-mentioned problems. UTILITY MODEL CONTENT

[0005] The utility model overcomes the above-mentioned technical deficiencies, provides a kind of waste gas treatment regenerative oxidation furnace, and the heat storage efficiency is high, and ceramic saddle ring that can filter waste gas particles is provided in furnace shell body, to avoid the problem of furnace body blockage.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of waste gas treatment regenerative oxidation furnace, including furnace shell body, gas inlet pipe, gas outlet pipe, purging pipe, the furnace shell body is surrounded by fire-retardant heat insulation aluminum silicate cotton module and metal frame body, the furnace shell body is divided into combustion chamber, at least three heat storage chambers below combustion chamber, the bottom of the heat storage chamber is equipped with grid, ceramic saddle ring is stacked on the grid, ceramic honeycomb heat storage body is placed above the ceramic saddle ring, the gas inlet pipe is used to send organic waste gas to the bottom of heat storage chamber, the gas outlet pipe can discharge waste gas after combustion from the bottom of heat storage chamber, the purging pipe is used to send purging gas to the bottom of heat storage chamber.

[0008] Preferably, the ceramic saddle ring stacking thickness is 10-30cm, and the ceramic honeycomb heat storage body stacking thickness is 100-120cm.

[0009] Preferably, the thickness of the fire-retardant heat insulation aluminum silicate cotton module is 25cm.

[0010] Preferably, the metal frame is located outside the fire-retardant and heat-insulating aluminum silicate cotton module, and the fire-retardant and heat-insulating aluminum silicate cotton module is fixedly connected with the metal frame through bolts.

[0011] Preferably, the air inlet pipe comprises an air inlet main pipe and an air inlet branch pipe, the bottom of the regenerative chamber is communicated with the air inlet main pipe through the air inlet branch pipe, and the air inlet branch pipe is provided with an air inlet valve; the air outlet pipe comprises an air outlet main pipe and an air outlet branch pipe, the bottom of the regenerative chamber is communicated with the air outlet main pipe through the air outlet branch pipe, and the air outlet branch pipe is provided with an air outlet valve; the purging pipe comprises a purging main pipe and a purging branch pipe, the bottom of the regenerative chamber is communicated with the purging main pipe through the purging branch pipe, and the purging branch pipe is provided with a purging valve.

[0012] Preferably, the air outlet main pipe is located below the regenerative chamber; the air outlet branch pipe comprises an inclined section and a vertical section, the inclined section gradually extends downward from the bottom of the regenerative chamber to the upper end of the vertical section, the lower end of the vertical section is communicated with the air outlet main pipe, and the air outlet valve is arranged at the upper end of the vertical section.

[0013] Preferably, the diameter of the air outlet main pipe is 50-100 cm.

[0014] Preferably, the air outlet valve comprises a lifting cylinder mounted on the outer wall of the inclined section, an output rod of the lifting cylinder penetrates into the inclined section, and a valve plate matched with the size of the upper end of the vertical section is connected to the output rod.

[0015] Preferably, the combustion chamber is provided with a combustion machine, a blow-off port, an exhaust port and a temperature sensor.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. The furnace shell of the utility model is surrounded by fire-retardant and heat-insulating aluminum silicate cotton modules and a metal frame, so that the furnace shell has good heat preservation effect and reduces the heat loss of the waste gas treatment regenerative oxidation furnace. The ceramic saddle ring and the ceramic honeycomb regenerator are sequentially stacked at the bottom of the regenerative chamber, so that the heat of the burned waste gas can be retained for preheating of the newly-incoming organic waste gas. The fire-retardant and heat-insulating aluminum silicate cotton modules, the ceramic saddle ring and the ceramic honeycomb regenerator enable the waste gas treatment regenerative oxidation furnace to achieve high regenerative efficiency.

[0018] 2. The stacked ceramic saddle ring can form staggered and larger gaps, the ceramic honeycomb regenerator has smaller air hole diameter and larger air hole length, is easy to block, but has larger specific surface area and good heat storage performance. In the process of treating the organic waste gas, the organic waste gas enters the waste gas treatment regenerative oxidation furnace, passes through the ceramic saddle ring first, and then passes through the ceramic honeycomb regenerator, the ceramic saddle ring can filter most of the particulate matters in the organic waste gas to avoid the ceramic honeycomb regenerator from being blocked, the filtered particulate matters are located in the gaps of the ceramic saddle ring, when the waste gas after combustion is discharged from the waste gas treatment regenerative oxidation furnace, the waste gas after combustion sweeps the particulate matters in the gaps of the ceramic saddle ring out of the furnace shell, so that the waste gas treatment regenerative oxidation furnace can be self-cleaning in the operation process.

[0019] 3. The heat storage chamber bottom is communicated with the gas outlet main pipe through the gas outlet branch pipe, the gas outlet branch pipe comprises an inclined section and a vertical section, and the inclined section gradually inclines downward from the heat storage chamber bottom to the upper end of the vertical section. When the waste gas after combustion is discharged from the waste gas treatment regenerative oxidation furnace, the particulate matters in the furnace shell are swept to the gas outlet branch pipe, the inclined section can guide the particulate matters to slide to the vertical section, and then to the gas outlet main pipe, so that the gas outlet branch pipe is prevented from being blocked.

[0020] 4. The combustion chamber is provided with an explosion vent and an exhaust port, which are automatically opened when the internal pressure and temperature of the waste gas treatment regenerative oxidation furnace are too high, so as to release the pressure, prevent the waste gas treatment regenerative oxidation furnace from exploding, and improve the safety of the waste gas treatment regenerative oxidation furnace. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the internal schematic view of the waste gas treatment regenerative oxidation furnace in the first embodiment of the utility model;

[0022] Figure 2 is the overall schematic view of the waste gas treatment regenerative oxidation furnace in the first embodiment of the utility model;

[0023] Figure 3 is the overall schematic view of the waste gas treatment regenerative oxidation furnace in the second embodiment of the utility model;

[0024] The implementation, functional characteristics and advantages of the utility model will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0025] The features and other related features of the utility model will be further described in detail through the embodiments, so as to be understood by the technicians in the same industry:

[0026] With reference to Figures 1-2 , the first embodiment of the waste gas treatment regenerative oxidation furnace of the utility model is proposed:

[0027] The application relates to a waste gas treatment regenerative oxidation furnace which comprises a furnace shell 1, an air inlet pipe 2, an air outlet pipe 3 and a blowing pipe 4. The furnace shell 1 is surrounded by flame-retardant heat-insulating aluminum silicate cotton modules 11 and a metal frame 12, and is divided into a combustion chamber 13 and at least three regenerative chambers 14 below the combustion chamber 13. The bottom of each regenerative chamber 14 is provided with a grid 15, ceramic saddle rings 16 are stacked on the grid 15, and ceramic honeycomb regenerators 17 are arranged above the ceramic saddle rings 16. The air inlet pipe 2 is used for conveying organic waste gas to the bottom of the regenerative chamber 14, the air outlet pipe 3 can discharge the burned waste gas from the bottom of the regenerative chamber 14, and the blowing pipe 4 is used for conveying blowing gas to the bottom of the regenerative chamber 14.

[0028] The stacked ceramic saddle rings 16 can form staggered and large gaps. The ceramic honeycomb regenerators 17 have small pore diameters, large pore lengths, are easy to be blocked, have large specific surface areas and good heat storage performance. In the process of treating organic waste gas, the organic waste gas enters the waste gas treatment regenerative oxidation furnace, passes through the ceramic saddle rings 16 first and then passes through the ceramic honeycomb regenerators 17. The ceramic saddle rings 16 can filter most of the particulate matters in the organic waste gas to avoid the ceramic honeycomb regenerators 17 from being blocked. The filtered particulate matters are located in the gaps of the ceramic saddle rings 16. When the waste gas treatment regenerative oxidation furnace discharges the burned waste gas, the burned waste gas blows the particulate matters in the gaps of the ceramic saddle rings 16 to the outside of the furnace shell 1, so that the waste gas treatment regenerative oxidation furnace can be self-cleaned during operation.

[0029] Specifically, the stacked ceramic saddle rings 16 have a thickness of 10-30 cm, and the stacked ceramic honeycomb regenerators 17 have a thickness of 100-120 cm. The waste gas treatment regenerative oxidation furnace has heat storage capacity, and the stacked ceramic saddle rings 16 have good particulate filtering capacity.

[0030] The thickness of the flame-retardant heat-insulating aluminum silicate cotton modules 11 is 25 cm. Specifically, the flame-retardant heat-insulating aluminum silicate cotton modules 11 are formed by adding inorganic binders to aluminum silicate loose cotton and pressing the aluminum silicate loose cotton. The flame-retardant heat-insulating aluminum silicate cotton modules 11 have good flame-retardant heat-insulating performance and strength, and can ensure that the furnace shell 1 has good heat preservation effect and reduces heat loss of the waste gas treatment regenerative oxidation furnace.

[0031] The flame-retardant heat-insulating aluminum silicate cotton modules 11 are light in weight, the metal frame 12 is located outside the flame-retardant heat-insulating aluminum silicate cotton modules 11, and the flame-retardant heat-insulating aluminum silicate cotton modules 11 are fixedly connected with the metal frame 12 through bolts, so that the stability of the furnace shell 1 can be improved.

[0032] As Figure 2As shown, the air inlet pipe 2 includes an air inlet main pipe 21 and an air inlet branch pipe 22, and the bottom of the regenerative chamber 14 is communicated with the air inlet main pipe 21 through the air inlet branch pipe 22. The air inlet branch pipe 22 is provided with an air inlet valve 23. The air outlet pipe 3 includes an air outlet main pipe 31 and an air outlet branch pipe 32, and the bottom of the regenerative chamber 14 is communicated with the air outlet main pipe 31 through the air outlet branch pipe 32, and the air outlet branch pipe 32 is provided with an air outlet valve 33. The purge pipe 4 includes a purge main pipe 41 and a purge branch pipe 42, and the bottom of the regenerative chamber 14 is communicated with the purge main pipe 41 through the purge branch pipe 42, and the purge branch pipe 42 is provided with a blowing valve.

[0033] As shown in the figure, Figure 1 The air outlet main pipe 31 is located below the regenerative chamber 14. The air outlet branch pipe 32 includes an inclined section 321 and a vertical section 322. The inclined section 321 gradually inclines downward from the bottom of the regenerative chamber 14 to the upper end of the vertical section 322, and the lower end of the vertical section 322 is communicated with the air outlet main pipe 31. The air outlet valve 33 is arranged at the upper end of the vertical section 322. When the waste heat treatment regenerative oxidation furnace discharges the burned waste gas, the particulate matters in the furnace shell 1 are blown to the air outlet branch pipe 32. The inclined section 321 can guide the particulate matters to slide to the vertical section 322, and then to the air outlet main pipe 31, so as to avoid the blockage of the air outlet branch pipe 32.

[0034] The diameter of the air outlet main pipe 31 is 50-100cm. The diameter of the air outlet main pipe 31 is large, so it is not easy to be blocked, and it is convenient to clean the air outlet main pipe 31.

[0035] The air outlet valve 33 includes a lifting cylinder 331 mounted on the outer wall of the inclined section 321. The output rod of the lifting cylinder 331 penetrates into the inclined section 321, and a valve plate 332 matched with the size of the upper end of the vertical section 322 is connected to the output rod. The lifting cylinder 331 moves the valve plate 332 to realize the opening and closing of the air outlet valve 33. In this embodiment, the air inlet pipe 2 and the air outlet pipe 3 are similar in structure.

[0036] The combustion chamber 13 is provided with a combustion machine (not shown in the figure), a blow-off port 18, an exhaust port and a temperature sensor (not shown in the figure). The exhaust port is connected with a waste gas chimney, and the opening and closing of the exhaust port can be manually controlled. When the temperature sensor detects that the temperature of the combustion chamber 13 is too high, the blow-off port 18 will be automatically opened to release the pressure, so as to prevent the waste heat treatment regenerative oxidation furnace from exploding and improve the safety of the waste heat treatment regenerative oxidation furnace.

[0037] As shown in the figure, Figure 1 The waste heat treatment regenerative oxidation furnace of the utility model is provided with three regenerative chambers 14, which are a regenerative chamber A, a regenerative chamber B and a regenerative chamber C.

[0038] The process of treating organic waste gas of the utility model is as follows:

[0039] First cycle: the air inlet pipe 2 transports the organic waste gas to the regenerator A, the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator A preheat the organic waste gas. The preheated organic waste gas reaches the combustion chamber 13, under the action of the combustor, the organic waste gas is burned and decomposed into water and carbon dioxide. Then the burned gas is discharged from the regenerator B, so that the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator B exchange heat with the gas. In this process, the purge pipe 4 transports the purge gas to the regenerator C.

[0040] Second cycle: the air inlet pipe 2 transports the organic waste gas to the regenerator B, the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator B preheat the organic waste gas. The preheated organic waste gas reaches the combustion chamber 13, under the action of the combustor, the organic waste gas is burned and decomposed into water and carbon dioxide. Then the burned gas is discharged from the regenerator C, so that the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator C exchange heat with the gas. In this process, the purge pipe 4 transports the purge gas to the regenerator A.

[0041] Third cycle: the air inlet pipe 2 transports the organic waste gas to the regenerator C, the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator C preheat the organic waste gas. The preheated organic waste gas reaches the combustion chamber 13, under the action of the combustor, the organic waste gas is burned and decomposed into water and carbon dioxide. Then the burned gas is discharged from the regenerator A, so that the ceramic honeycomb regenerator 17 and the ceramic saddle ring 16 in the regenerator A exchange heat with the gas. In this process, the purge pipe 4 transports the purge gas to the regenerator B.

[0042] The waste gas treatment regenerative oxidation furnace realizes the heat storage of the furnace body and the waste gas treatment by sequentially repeating the three cycles through the switching valve.

[0043] Referring to Figure 3 A second embodiment of the waste gas treatment regenerative oxidation furnace is provided. The waste gas treatment regenerative oxidation furnace of the second embodiment is identical to the waste gas treatment regenerative oxidation furnace of the first embodiment except that the exhaust port 19 is installed at the top of the combustion chamber 13. The opening and closing of the exhaust port 19 can be manually controlled to release the pressure and prevent the explosion of the waste gas treatment regenerative oxidation furnace, thereby improving the safety of the waste gas treatment regenerative oxidation furnace.

[0044] The above description is only preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application is also included in the patent protection range of the present application.

Claims

1. An exhaust gas treatment regenerative thermal oxidizer characterized by, The application relates to a waste gas treatment device, which comprises a furnace shell (1), an air inlet pipe (2), an air outlet pipe (3) and a blowing pipe (4), wherein the furnace shell (1) is surrounded by flame-retardant heat-insulating aluminum silicate cotton modules (11) and a metal frame (12), the furnace shell (1) is divided into a combustion chamber (13) and at least three heat storage chambers (14) below the combustion chamber (13), the bottom of each heat storage chamber (14) is provided with a grid (15), ceramic saddle rings (16) are stacked on the grid (15), ceramic honeycomb heat storage bodies (17) are placed above the ceramic saddle rings (16), the air inlet pipe (2) is used for conveying organic waste gas to the bottom of the heat storage chamber (14), the air outlet pipe (3) can discharge the burned waste gas from the bottom of the heat storage chamber (14), and the blowing pipe (4) is used for conveying blowing gas to the bottom of the heat storage chamber (14).

2. The regenerative thermal oxidizer of claim 1, wherein, The ceramic saddle rings (16) are stacked with a thickness of 10-30 cm, and the ceramic honeycomb heat storage bodies (17) are stacked with a thickness of 100-120 cm.

3. The regenerative thermal oxidizer of claim 1, wherein, The thickness of the flame-retardant heat-insulating aluminum silicate cotton modules (11) is 25 cm.

4. The regenerative thermal oxidizer of claim 1, wherein, The metal frame (12) is located outside the flame-retardant heat-insulating aluminum silicate cotton modules (11), and the flame-retardant heat-insulating aluminum silicate cotton modules (11) are fixedly connected with the metal frame (12) through bolts.

5. The regenerative thermal oxidizer of claim 1, wherein, The air inlet pipe (2) comprises an air inlet main pipe (21) and an air inlet branch pipe (22), the bottom of each heat storage chamber (14) is communicated with the air inlet main pipe (21) through the air inlet branch pipe (22), and the air inlet branch pipe (22) is provided with an air inlet valve (23); the air outlet pipe (3) comprises an air outlet main pipe (31) and an air outlet branch pipe (32), the bottom of each heat storage chamber (14) is communicated with the air outlet main pipe (31) through the air outlet branch pipe (32), and the air outlet branch pipe (32) is provided with an air outlet valve (33); the blowing pipe (4) comprises a blowing main pipe (41) and a blowing branch pipe (42), the bottom of each heat storage chamber (14) is communicated with the blowing main pipe (41) through the blowing branch pipe (42), and the blowing branch pipe (42) is provided with a blowing valve.

6. An abatement regenerative thermal oxidizer as defined in claim 5, wherein, The air outlet main pipe (31) is located below the heat storage chamber (14); the air outlet branch pipe (32) comprises an inclined section (321) and a vertical section (322), the inclined section (321) gradually extends downwards from the bottom of the heat storage chamber (14) to the upper end of the vertical section (322), the lower end of the vertical section (322) is communicated with the air outlet main pipe (31), and the air outlet valve (33) is arranged at the upper port of the vertical section (322).

7. The regenerative thermal oxidizer of claim 6, wherein, The diameter of the air outlet main pipe (31) is 50-100 cm.

8. The regenerative thermal oxidizer of claim 6, wherein, The air outlet valve (33) comprises a lifting cylinder (331) mounted on the outer wall of the inclined section (321), the output rod of the lifting cylinder (331) penetrates into the inclined section (321), and a valve plate (332) with a size matched with the upper port of the vertical section (322) is connected to the output rod.

9. The regenerative thermal oxidizer of claim 1, wherein, The combustion chamber (13) is provided with a combustion machine, a blast outlet (18), an exhaust port (19) and a temperature sensor.

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