CN109681892B - Waste gas incinerator - Google Patents
Waste gas incinerator Download PDFInfo
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- CN109681892B CN109681892B CN201710972879.XA CN201710972879A CN109681892B CN 109681892 B CN109681892 B CN 109681892B CN 201710972879 A CN201710972879 A CN 201710972879A CN 109681892 B CN109681892 B CN 109681892B
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- heat exchange
- heat
- flue gas
- exhaust gas
- outlet
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- 239000002912 waste gas Substances 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000003546 flue gas Substances 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 41
- 238000005192 partition Methods 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 11
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 239000010815 organic waste Substances 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 7
- 239000002918 waste heat Substances 0.000 description 7
- 230000005855 radiation Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Abstract
The invention discloses an exhaust gas incineration device, which comprises a shell, a heating cavity, a heat exchange tube, a separation tube sleeve, a wind shielding piece, a porous partition plate, an exhaust gas inlet, a smoke outlet, a heat dissipation channel, a wind valve, a tail end heat exchanger and an exhaust fan, wherein the wind valve is arranged at the tail end of the shell; the heating cavity, the heat exchange tubes, the separation tube sleeve, the wind shielding piece and the porous partition plate are arranged in the shell, the heat exchange tubes are arranged in a plurality of rows and a plurality of layers or columns, and spaces are reserved between adjacent heat exchange tubes; a wind shielding piece with a wind resistance coefficient from large to small is correspondingly arranged from near to far in a flue gas flow passage near the flue gas outlet; a flue gas outlet is formed in one side, close to the exhaust gas inlet end, of the shell, a heat dissipation outlet is formed in one side, close to the middle section, of the shell, a wind valve is arranged in a heat dissipation channel communicated with the heat dissipation outlet, the flue gas outlet and the heat dissipation channel are connected with a tail end heat exchanger, and the tail end heat exchanger is connected with an exhaust fan. The heat supplement of the heating cavity can be saved, and on the other hand, the flue gas discharge temperature is greatly reduced after the flue gas transfers heat to the waste gas.
Description
Technical Field
The invention relates to a gas incineration device, in particular to an incineration and waste heat utilization device for organic waste gas, and belongs to the technical field of environmental protection and energy conservation.
Background
For the treatment of organic waste gas, heat accumulation type incineration (RTO) is generally adopted at present to decompose the organic waste gas at high temperature to realize emission up to standard, RTO equipment is complicated because of the structure, leads to high cost and easy to fail, for example, the valve frequently switches and easily breaks down to lead to the fume emission not up to standard, and the heat accumulation ceramic of RTO forms very big windage, and the fan energy consumption is very high. Further, RTO is not suitable for treatment of organic waste gas with higher concentration due to limited heat dissipation capability. In addition, RTO also has problems in the aspect of waste heat recycling, and the temporary heat utilization requirement of external equipment during the preheating stage of the furnace body cannot be met.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and designs a device suitable for middle-high concentration waste gas incineration and waste heat recycling, which can realize standard emission and simultaneously save investment cost and operation cost of waste gas treatment.
The invention can adopt the following technical scheme:
an exhaust gas incineration device comprises a shell, a heating cavity, a heat exchange tube, a separation tube sleeve, a wind shielding piece, a porous partition plate, an exhaust gas inlet, a flue gas outlet, a heat dissipation channel, a blast valve, a tail end heat exchanger and an exhaust fan; the heating cavity, the heat exchange tube, the separation tube sleeve, the wind shielding piece and the porous separation plate are arranged in the shell, the heat exchange tube is arranged between the waste gas inlet and the heating cavity, and the porous separation plate is arranged on a tube orifice of the heat exchange tube, which is close to the waste gas inlet end; the pipe orifice of the heat exchange pipe close to the exhaust gas inlet end is tightly matched with the round hole of the porous partition plate, the porous partition plate separates the inside and outside of the heat exchange pipe, the pipe orifice of the heat exchange pipe close to the exhaust gas inlet end is communicated with the exhaust gas inlet, and the space outside the pipe inner pipe of the pipe orifice of the other end of the heat exchange pipe is communicated with the heating cavity; the heat exchange tubes are arranged in a plurality of rows and a plurality of layers or columns, and spaces are arranged between adjacent heat exchange tubes, and form flue gas flow passages; a flue gas outlet is formed in one side, close to the exhaust gas inlet end, of the shell, a heat dissipation outlet is formed in one side, close to the middle section, of the shell, a wind valve is arranged in a heat dissipation channel communicated with the heat dissipation outlet, the flue gas outlet and the heat dissipation channel are connected with a tail end heat exchanger, and the tail end heat exchanger is connected with an exhaust fan.
The invention can further take the following improvement measures:
the further improvement is as follows: the shell is provided with a heat insulation layer.
The heat exchange tubes are arranged horizontally in multiple layers up and down or vertically in multiple rows in front, back, left and right.
The further improvement is as follows: in each heat exchange tube, a separation tube sleeve is sleeved between the segments.
The further improvement is as follows: the separation pipe sleeve separates adjacent heat exchange pipes by a certain space.
The further improvement is as follows: the heating cavity is provided with a gas burner or an electric heating tube.
The further improvement is as follows: the tail end heat exchanger is a gas-liquid heat exchanger or a gas-gas heat exchanger.
The further improvement is as follows: the heat exchange tube and the separation tube sleeve are made of ceramic materials.
The further improvement is as follows: the wind shielding piece with the wind resistance coefficient from large to small is correspondingly arranged from near to far in the flue gas flow passage near the flue gas outlet.
The technical scheme has the following technical effects:
1. the waste gas and the flue gas exchange heat through the heat exchange pipe wall, and the waste gas absorbs a large amount of flue gas waste heat before entering the heating cavity, so that the heat supplement of the heating cavity can be saved, and on the other hand, the flue gas transfers heat to the waste gas, so that the flue gas emission temperature is greatly reduced.
2. Because the asymmetric flue gas outlet which is arranged at one end of the shell and leans against one side face leads to uneven distribution of flue gas flow in the shell, the opposite area of the flue gas outlet end of the shell becomes a dead angle area of a flue gas flow channel, so that the heat exchange efficiency is reduced, the air flow direction can be corrected through the arrangement of the wind shielding piece, the flow direction of flue gas in most areas is basically consistent with the axial direction of the heat exchange tube, the dead angle problem of the heat exchange area is solved, and a certain turbulence is formed by passing through the separation tube sleeve, so that the high-temperature flue gas contacts the heat exchange tube wall more fully and uniformly, and the heat exchange efficiency of air inside and outside the heat exchange tube is improved.
3. The tail end heat exchanger arranged in front of the suction port of the exhaust fan can fully absorb and recycle the waste heat of the flue gas, clean hot air or hot water or hot oil can be generated through the heat exchanger, so that energy-saving benefits are realized, and meanwhile, further reduction of the temperature of the flue gas is more beneficial to the operation of the exhaust fan.
4. When the waste gas with higher concentration is burnt, a large amount of heat generated by oxidation of the high-concentration organic waste gas can be gradually accumulated under the condition that the heat supply to the heating cavity from the outside is stopped, so that the internal temperature of the equipment exceeds a safety limit. In addition, in the preheating process of the incineration device, the heat dissipation outlet can be used for acquiring high-temperature flue gas in advance to provide heat for the tail end heat exchanger, namely, the incineration equipment can output heat in advance to external heat utilization equipment for use when the waste gas incineration program is not entered, so that the time is saved.
5. Because only the heat exchange tube is adopted between the waste gas and the flue gas as a heat exchange medium, compared with the heat storage ceramic blocks or honeycomb ceramics of RTO, the wind resistance in the heat storage ceramic blocks or honeycomb ceramics is greatly reduced, and the energy consumption of the wind turbine is greatly saved. The structure of the invention is simpler than RTO, and the equipment is more stable and reliable to operate.
Drawings
Fig. 1 is a schematic diagram of the main structure of embodiment 1.
Fig. 2 is a schematic view of the A-A direction section of fig. 1.
Fig. 3 is a schematic view of the component structure of embodiment 1.
Fig. 4 is a schematic view of the component structure of embodiment 3.
Fig. 5 is a schematic diagram of the main structure of embodiment 4.
Fig. 6 is an enlarged partial schematic view of a portion of fig. 1.
Fig. 7 is an enlarged partial schematic view of another portion of fig. 1.
Detailed Description
The present invention will be specifically described with reference to the following examples.
Example 1: as shown in fig. 1, 2, 3, 6, and 7, an exhaust gas incineration device includes a housing 1, a heating chamber 2, a heat exchange tube 3, a partition sleeve 31, a wind shielding member 4, a porous partition plate 5, an exhaust gas inlet 6, a smoke outlet 7, a heat radiation outlet 8, a heat radiation passage 81, a damper 9, a terminal heat exchanger 10, and an exhaust fan 11; the heating cavity 2, the heat exchange pipes 3, the separation pipe sleeves 31, the wind shielding piece 4 and the porous partition plate 5 are arranged in the shell 1, the heat exchange pipes 3 are arranged between the waste gas inlet 6 and the heating cavity 2, the separation pipe sleeves 31 are sleeved between the sections in each heat exchange pipe 3, and the porous partition plate 5 is arranged on a pipe orifice of the heat exchange pipe 3 close to the end of the waste gas inlet 6; the pipe orifice of the heat exchange pipe 3 near the exhaust gas inlet 6 is tightly matched with a round hole of the porous partition plate 5, the porous partition plate 5 separates the inside and outside of the heat exchange pipe 3, the pipe orifice of the heat exchange pipe 3 near the exhaust gas inlet 6 is communicated with the exhaust gas inlet 6, and the pipe inner pipe outer space of the pipe orifice at the other end of the heat exchange pipe 3 is communicated with the heating cavity 2; the heat exchange tubes 3 are horizontally arranged in a plurality of rows and a plurality of layers, and the heat exchange tubes 3 are separated from each other by a certain space through the separation tube sleeve 31; the wind shielding piece 4 with a large wind resistance coefficient is arranged from top to bottom in the outer space of the multi-layer heat exchange tube 3 near the smoke outlet 7; the shell 1 is provided with a flue gas outlet 7 near the upper left end, a heat dissipation outlet 8 is arranged near the middle section of the shell 1, a wind valve 9 is arranged in a heat dissipation channel 81 communicated with the heat dissipation outlet 8, the flue gas outlet 7 and the heat dissipation channel 81 are connected with a tail end heat exchanger 10, and the tail end heat exchanger 10 is connected with an exhaust fan 11.
The shell 1 is provided with a heat insulation layer 15;
the number of the heat exchange tubes 3 is multiple, and the arrangement mode is that the heat exchange tubes are horizontally arranged in an upper layer and a lower layer;
the separation sleeve 31 tightly connects two corresponding heat exchange tubes 3 (see fig. 3).
The separation pipe sleeve 31 separates adjacent heat exchange pipes 3;
the projection positions of the heat exchange tube and the heat exchange tube between the upper layer and the lower layer are staggered and symmetrical; (as in FIG. 2)
The positions of the separation pipe sleeves 31 on the upper layer and the lower layer of the heat exchange pipe 3 are staggered.
The heating cavity 2 is provided with a gas burner 12;
the tail end heat exchanger 10 is a coil heat exchanger for gas-liquid heat exchange;
the heat exchange tube 3 and the separation tube sleeve 31 are made of ceramic materials, and are connected by adopting high-temperature-resistant bonding materials;
the air valve 9 is a proportional air valve.
Principle of operation
Example 1: as shown in fig. 1, 2, 3, 6 and 7, the exhaust fan 11 drives the exhaust fan, the VOCs waste gas 13 enters from the pipe orifice of the heat exchange pipe at one end of the waste gas inlet, the VOCs waste gas penetrates through the heat exchange pipe and enters the heating cavity from the pipe orifice at the other end, the VOCs waste gas is pyrolyzed at high temperature and becomes high-temperature flue gas 14, the flue gas 14 returns through the space between the heat exchange pipes, and finally the flue gas is discharged from the flue gas outlet through the exhaust fan. The flow direction of the waste gas 13 in the heat exchange tube is opposite to that of the flue gas outside the heat exchange tube, and the waste gas and the flue gas exchange heat through the wall of the heat exchange tube, so that the temperature of the waste gas is close to or reaches the required pyrolysis temperature when reaching the heating cavity, the heating energy consumption is saved, and the discharge temperature of the flue gas is reduced. When the internal temperature of the burnt high-concentration waste gas is too high, the air valve 9 in the heat dissipation channel 81 is opened to enable part of the flue gas to be discharged through the heat dissipation outlet halfway, so that the temperature of the heating cavity can be reduced, and the temperature of the heating cavity can be controlled in a proper range by controlling the power of the burner and the opening and closing degree of the air valve.
The heat dissipation outlet sets up in the near position of casing middle section and is fairly suitable, if heat dissipation outlet is too near the heating chamber, heat dissipation outlet exhaust flue gas temperature is too high, can cause harm to pipeline and valve, also can exist the flue gas and lead to the insufficient risk that leads to the flue gas emission to be up to standard at high temperature region dwell time inadequately, if heat dissipation outlet is too near the flue gas outlet, exhaust flue gas temperature is too low can lead to the heat release inadequately.
When the organic waste gas with lower concentration is burnt, the heat is needed to be supplemented through the burner to maintain the heating cavity to have enough temperature to ensure that the waste gas is fully pyrolyzed to realize emission reaching the standard, under the condition, the air valve is in a closed state, when the organic waste gas with higher concentration is burnt, a large amount of oxidation heat is generated, the temperature of the heating cavity still exceeds the specified range when the burner stops working, under the condition, the air valve is in an open state to discharge part of high-temperature flue gas in advance in the middle of realizing cooling.
The flue gas outlet and the heat dissipation outlet are arranged above the shell, so that when the flue gas returns from the heating cavity, the flue gas flows along the upper side due to the negative pressure direction, a dead angle area formed by the flue gas flowing is formed at the position close to the lower left side, and the integral heat exchange efficiency of the heat exchange tubes is reduced.
The positions of the separation pipe sleeves of the upper layer and the lower layer of heat exchange pipes are staggered, so that on one hand, the mutual interference of the space positions between the upper layer and the lower layer of separation pipe sleeves is prevented, and the separation pipe sleeves on the same flue gas wind-passing section are prevented from forming a too large wind shielding area, and a large-resistance narrow flue gas flow passage is formed.
The heat exchange efficiency of the heat exchange tube is limited, the high-temperature flue gas discharged during the middle of burning the high-concentration organic waste gas enters, the tail end flue gas has a certain temperature, the tail end heat exchanger is responsible for heat recovery of the part of flue gas, the coil heat exchanger adopting gas-liquid heat exchange can obtain hot water or heat conducting oil from the flue gas, and the part of waste heat can be remotely conveyed to other heat utilization equipment or living facilities through the heat preservation pipeline to be used for realizing energy saving.
In the preheating process of the incineration device, the heat exchange tube close to the heating cavity part is heated firstly, then heat is slowly transferred to the direction of the smoke outlet, when the temperature of the smoke discharged from the smoke outlet is very low in the early preheating stage, more heat cannot be provided for the tail end heat exchanger, and if useful heat needs of external equipment in the period, such as: the operation or pre-test of the external equipment needs to use hot water or hot air, under the condition, the air valve can be opened in advance, so that flue gas close to the higher temperature of the heating cavity is sent into the tail end heat exchanger in advance, the output quantity of hot air is controlled by adjusting the opening and closing degree of the proportional air valve according to the heat consumption, the external heat energy output by the incinerator can be realized at the same time in the preheating stage so as to meet the external temporary heat consumption requirement, the heat is not required to be provided for the outside when the incinerator reaches the working temperature, and the waiting time is greatly reduced. The hot air output by the heat radiation outlet can be regarded as a relatively independent heat source to solve the problem of external temporary heat consumption, and the problem of equipment investment increase caused by the fact that the temporary heat consumption needs to be additionally provided with a hot air furnace for incineration equipment such as TRO and the like is solved.
Example 2: as in fig. 1, 2, 3: an exhaust gas incineration device comprises a shell 1, a heating cavity 2, a heat exchange tube 3, a separation tube sleeve 31, a wind shielding piece 4, a porous separation plate 5, an exhaust gas inlet 6, a smoke outlet 7, a heat dissipation outlet 8, a heat dissipation channel 81, a wind valve 9, a tail end heat exchanger 10 and an exhaust fan 11; the heating cavity 2, the heat exchange pipes 3, the separation pipe sleeves 31, the wind shielding piece 4 and the porous partition plate 5 are arranged in the shell 1, the heat exchange pipes 3 are arranged between the waste gas inlet 6 and the heating cavity 2, the separation pipe sleeves 31 are sleeved between the sections of each heat exchange pipe 3, and the porous partition plate 5 is arranged on a pipe orifice of the heat exchange pipe 3 close to the end of the waste gas inlet 6; the pipe orifice of the heat exchange pipe 3 close to the exhaust gas inlet 6 is tightly matched with a round hole of the porous partition plate 5, the porous partition plate 5 separates the space between the inside and the outside of the heat exchange pipe 3, the pipe orifice of the heat exchange pipe 3 close to the exhaust gas inlet 6 is communicated with the exhaust gas inlet 6, and the space outside the pipe inner pipe orifice of the other end of the heat exchange pipe 3 is communicated with the heating cavity 2; the heat exchange tubes 3 are horizontally arranged in a plurality of rows and a plurality of layers, and the upper, lower, left and right heat exchange tubes 3 are separated by a certain space by the separation tube sleeve 31; the wind shielding piece 4 with a large wind resistance coefficient is arranged from top to bottom in the outer space of the multi-layer heat exchange tube 3 near the smoke outlet 7; the shell 1 is provided with a flue gas outlet 7 near the upper left end, a heat dissipation outlet 8 is arranged near the middle section of the shell 1, a wind valve 9 is arranged in a heat dissipation channel 81 communicated with the heat dissipation outlet 8, the flue gas outlet 7 and the heat dissipation channel 81 are connected with a tail end heat exchanger 10, and the tail end heat exchanger 10 is connected with an exhaust fan 11.
The tail end heat exchanger 10 is a plate heat exchanger for gas-gas heat exchange;
the tail end heat exchanger 10 is provided with a flue gas channel and a fresh air channel, wherein the flue gas channel is communicated with the flue gas outlet 7 to the exhaust fan 11, and the fresh air channel is used for heating the entering fresh air and outputting clean hot air.
The waste heat output adopts a hot air output mode, is suitable for being matched with waste gas adsorption and desorption equipment, and hot air required by waste gas desorption can be provided nearby, and is also suitable for occasions requiring hot air in a short distance.
The rest is the same as in example 1
Example 3: as in fig. 1 and 4: an exhaust gas incineration device comprises a shell 1, a heating cavity 2, a heat exchange tube 3, a separation tube sleeve 31, a wind shielding piece 4, a porous separation plate 5, an exhaust gas inlet 6, a smoke outlet 7, a heat dissipation outlet 8, a heat dissipation channel 81, a wind valve 9, a tail end heat exchanger 10 and an exhaust fan 11; the heating cavity 2, the heat exchange pipes 3, the separation pipe sleeves 31, the wind shielding piece 4 and the porous partition plate 5 are arranged in the shell 1, the heat exchange pipes 3 are arranged between the waste gas inlet 6 and the heating cavity 2, the separation pipe sleeves 31 are sleeved between the sections of each heat exchange pipe 3, and the porous partition plate 5 is arranged on a pipe orifice of the heat exchange pipe 3 close to the end of the waste gas inlet 6; the pipe orifice of the heat exchange pipe 3 close to the exhaust gas inlet 6 is tightly matched with a round hole of the porous partition plate 5, the porous partition plate 5 separates the inside and outside of the heat exchange pipe 3, the pipe orifice of the heat exchange pipe 3 close to the exhaust gas inlet 6 is communicated with the exhaust gas inlet 6, and the space outside the pipe inner pipe orifice of the other end of the heat exchange pipe 3 is communicated with the heating cavity 2; the heat exchange tubes 3 are horizontally arranged in a plurality of rows and a plurality of layers, and the heat exchange tubes 3 are separated from each other by a certain space through the separation tube sleeve 31; the wind shielding piece 4 with a large wind resistance coefficient is arranged from top to bottom in the outer space of the multi-layer heat exchange tube 3 near the smoke outlet 7; the shell 1 is provided with a flue gas outlet 7 near the upper left end, a heat dissipation outlet 8 is arranged near the middle section of the shell 1, a wind valve 9 is arranged in a heat dissipation channel 81 communicated with the heat dissipation outlet 8, the flue gas outlet 7 and the heat dissipation channel 81 are connected with a tail end heat exchanger 10, and the tail end heat exchanger 10 is connected with an exhaust fan 11.
The heat exchange tube 3 consists of a ceramic tube;
a spiral guide vane 16 is arranged in the heat exchange tube 3;
the guide vane 16 is formed by twisting a high-temperature-resistant metal sheet strip (as shown in fig. 4).
The remainder was the same as in example 1.
In order to avoid the exhaust gas from passing through the heat exchange tube in a straight line, in embodiment 3, the spiral heat conducting fins are arranged in the heat exchange tube to enable the exhaust gas in the heat exchange tube to rotate forward, so that the exhaust gas in the tube is fully and uniformly contacted with the inner wall of the tube to improve the heat exchange efficiency.
Example 4: as shown in fig. 5, an exhaust gas incineration device comprises a housing 1, a heating chamber 2, a heat exchange tube 3, a partition sleeve 31, a wind shielding member 4, a porous partition plate 5, an exhaust gas inlet 6, a smoke outlet 7, a heat radiation outlet 8, a heat radiation passage 81, a damper 9, a terminal heat exchanger 10 and an exhaust fan 11; the heating cavity 2, the heat exchange pipes 3, the separation pipe sleeves 31, the wind shielding piece 4 and the porous partition plate 5 are arranged in the shell 1, the heat exchange pipes 3 are arranged between the waste gas inlet 6 and the heating cavity 2, the separation pipe sleeves 31 are sleeved between the sections of each heat exchange pipe 3, and the porous partition plate 5 is arranged on a pipe orifice of one end, close to the waste gas inlet 6, of the heat exchange pipe 3; the pipe orifice of the heat exchange pipe 3 near the exhaust gas inlet 6 is tightly matched with a round hole of the porous partition plate 5, the porous partition plate 5 separates the space between the inside and the outside of the heat exchange pipe 3, the pipe orifice of the heat exchange pipe 3 near the exhaust gas inlet 6 is communicated with the exhaust gas inlet 6, and the space outside the pipe inner pipe orifice of the other end of the heat exchange pipe 3 is communicated with the heating cavity 2; the heat exchange tubes 3 are vertically arranged in a plurality of rows and a plurality of columns, and the separation tube sleeves 31 separate the heat exchange tubes 3 from each other by a certain space; wind shielding pieces 4 with wind resistance coefficients from large to small are correspondingly arranged near the flue gas outlet 7 and in the outer space of the heat exchange tube 3 from near to far; the flue gas outlet 7 is arranged on one side of the lower end of the shell 1, the heat dissipation outlet 8 is arranged near the middle section of the shell 1, the air valve 9 is arranged in the heat dissipation channel 81 communicated with the heat dissipation outlet 8, the flue gas outlet 7 and the heat dissipation channel 81 are connected with the tail end heat exchanger 10, and the tail end heat exchanger 10 is connected with the exhaust fan 11.
The shell 1 is provided with a heat insulation layer 15;
the heat exchange tubes 3 are arranged in a plurality of rows and columns vertically;
the separation pipe sleeve 31 separates adjacent heat exchange pipes 3;
the heating cavity 2 is provided with a gas burner 12;
the heat exchange tube is a ceramic tube;
the biggest difference between the embodiment 4 and other embodiments is that the whole device is changed from horizontal placement to vertical placement, and the occupation of the field can be reduced by adopting a vertical placement mode.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The waste gas incineration device is characterized by comprising a shell, a heating cavity, a heat exchange tube, a separation tube sleeve, a wind shielding piece, a porous partition plate, a waste gas inlet, a flue gas outlet, a heat dissipation channel, a wind valve, a tail end heat exchanger and an exhaust fan; the heating cavity, the heat exchange tube, the separation tube sleeve, the wind shielding piece and the porous separation plate are arranged in the shell, the heat exchange tube is arranged between the waste gas inlet and the heating cavity, and the porous separation plate is arranged on a tube orifice of the heat exchange tube, which is close to the waste gas inlet end; the pipe orifice of the heat exchange pipe close to the exhaust gas inlet end is tightly matched with the round hole of the porous partition plate, the porous partition plate separates the inside and outside of the heat exchange pipe, the pipe orifice of the heat exchange pipe close to the exhaust gas inlet end is communicated with the exhaust gas inlet, and the space outside the pipe inner pipe of the pipe orifice of the other end of the heat exchange pipe is communicated with the heating cavity; the heat exchange tubes are arranged in a plurality of rows and a plurality of layers or columns, and spaces are arranged between adjacent heat exchange tubes, and form flue gas flow passages; a flue gas outlet is formed in one side, close to the exhaust gas inlet end, of the shell, a heat dissipation outlet is formed in one side, close to the middle section, of the shell, a wind valve is arranged in a heat dissipation channel communicated with the heat dissipation outlet, the flue gas outlet and the heat dissipation channel are connected with a tail end heat exchanger, and the tail end heat exchanger is connected with an exhaust fan.
2. The exhaust gas incinerating device according to claim 1, wherein: the shell is provided with a heat insulation layer.
3. The exhaust gas incinerating device according to claim 1, wherein: the heat exchange tubes are arranged horizontally in multiple layers up and down or vertically in multiple rows in front, back, left and right.
4. The exhaust gas incinerating device according to claim 1, wherein: in each heat exchange tube, a separation tube sleeve is sleeved between the segments.
5. The exhaust gas incinerating device according to claim 4, wherein: the separation pipe sleeve separates adjacent heat exchange pipes by a certain space.
6. The exhaust gas incinerating device according to claim 1, wherein: the heating cavity is provided with a gas burner or an electric heating tube.
7. The exhaust gas incinerating device according to claim 1, wherein: the tail end heat exchanger is a gas-liquid heat exchanger or a gas-gas heat exchanger.
8. The exhaust gas incinerating device according to claim 4, wherein: the heat exchange tube and the separation tube sleeve are made of ceramic materials.
9. The exhaust gas incinerating device according to claim 1, wherein: the wind shielding piece with the wind resistance coefficient from large to small is correspondingly arranged from near to far in the flue gas flow passage near the flue gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972879.XA CN109681892B (en) | 2017-10-18 | 2017-10-18 | Waste gas incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972879.XA CN109681892B (en) | 2017-10-18 | 2017-10-18 | Waste gas incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109681892A CN109681892A (en) | 2019-04-26 |
| CN109681892B true CN109681892B (en) | 2024-03-22 |
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| CN201710972879.XA Active CN109681892B (en) | 2017-10-18 | 2017-10-18 | Waste gas incinerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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