CN107781829B - Rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation and heat preservation method thereof - Google Patents
Rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation and heat preservation method thereof Download PDFInfo
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- CN107781829B CN107781829B CN201711184031.7A CN201711184031A CN107781829B CN 107781829 B CN107781829 B CN 107781829B CN 201711184031 A CN201711184031 A CN 201711184031A CN 107781829 B CN107781829 B CN 107781829B
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- 238000004321 preservation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims description 40
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 230000001172 regenerating effect Effects 0.000 claims description 18
- 238000009825 accumulation Methods 0.000 claims description 9
- 239000010815 organic waste Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 230000004089 microcirculation Effects 0.000 claims description 4
- 238000005338 heat storage Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 239000012855 volatile organic compound Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- F23G7/068—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 using regenerative heat recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation, which comprises a heat accumulating type oxidation furnace, wherein an air outlet cavity is arranged below the heat accumulating type oxidation furnace, the upper part of the side surface of the heat accumulating type oxidation furnace is connected with a top high-temperature three-way air pipe, the top high-temperature three-way air pipe is also connected with a high-temperature bypass straight pipe and a return air straight pipe, the high-temperature bypass straight pipe is connected with a chimney, the return air straight pipe is connected with an air outlet three-way air pipe, the air outlet three-way air pipe is also connected with an air outlet cavity and an air exhaust straight pipe, the air exhaust straight pipe is connected with the chimney, the lower part of the side surface of the heat accumulating type oxidation furnace is connected with an exhaust gas introducing fan, and the exhaust gas introducing fan is connected with an organic exhaust gas pipeline. Solves the problem that the prior art can not keep warm when the furnace is temporarily stopped. The invention also discloses a temporary furnace-stopping heat-preserving method of the rotary RTO furnace body.
Description
Technical Field
The invention belongs to the technical field of organic waste gas oxidation incinerators, relates to a rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation, and further relates to a method for performing temporary furnace shutdown heat preservation by adopting the rotary RTO furnace body.
Background
After industrial production, the atmospheric pollution is more and more serious, and gaseous harmful substances in the air, some of which are volatile organic compounds (abbreviated as VOCs or VOCs). The emission of harmful substances in such air is increasingly under strict control by the environmental protection sector, the limits of emission are regulated, and the emission is becoming more and more stringent. The rotary RTO furnace utilizes the volatile organic waste gas to generate chemical reaction with oxygen in the air at the temperature of more than 750 ℃ to generate CO 2 And H 2 O, a device for decomposing VOCs. The rotary RTO device is mainly divided into three parts: the upper part is a VOCs oxidation combustion zone, the middle part is a heat storage zone for storing heat, and the lower part is an exhaust gas rotary distribution zone. The upper part is called RTO combustion chamber, the combustion chamber is inWhen the RTO equipment operates, the normal temperature of the internal gas is within the range of 750-850 ℃. The heat accumulation area in the middle is mainly used for recovering the heat of the high-temperature gas after oxidation combustion and heating the new VOCs gas so as to achieve the purposes of heat accumulation and energy conservation. The distribution area is to distribute the exhaust gas and the purge gas by using a rotary valve.
Rotary RTO furnaces have found increasingly widespread use in a number of industries as a device for the treatment of organic waste gases. However, in the running process of the rotary RTO furnace system, the temporary furnace stopping is unavoidable for a short time (8-12 hours) due to objective reasons such as production shift, process adjustment and system maintenance, the heat of the heat accumulator can be quickly discharged from a chimney bypassing the furnace body after the furnace stopping, and then the heat of the heat accumulator needs to be supplemented by the furnace for baking, so that on one hand, the waste of energy sources and the hot and cold impact on the heat accumulator are caused, and on the other hand, the heat impact on the core part of the furnace body is generated in the heat discharging process, and the service life of the heat accumulator is shortened. In this case, an effective temporary shut-down and heat preservation method is considered.
Disclosure of Invention
The invention aims to provide a rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation, which solves the problem that the temporary furnace shutdown cannot preserve heat in the prior art.
The invention further aims to provide a temporary furnace shutdown heat preservation method of the rotary RTO furnace body.
The technical scheme includes that the rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation comprises a heat accumulating type oxidation furnace, an air outlet cavity is arranged below the heat accumulating type oxidation furnace, a top high-temperature three-way air pipe is connected to the upper portion of the side face of the heat accumulating type oxidation furnace, a high-temperature bypass straight pipe and a return air straight pipe are further connected to the top high-temperature three-way air pipe, a chimney is connected to the high-temperature bypass straight pipe, an air outlet three-way air pipe is connected to the return air straight pipe, an air outlet cavity and an air exhaust straight pipe are further connected to the air exhaust three-way air pipe, the air exhaust straight pipe is connected to the chimney, an exhaust gas introducing fan is connected to the lower portion of the side face of the heat accumulating type oxidation furnace, and an organic exhaust gas pipeline is connected to the exhaust gas introducing fan.
The first aspect of the invention is also characterized in that,
and a combustion-supporting fan is connected to one side of the upper part of the side surface of the heat accumulating type oxidation furnace, which is far away from the top high-temperature three-way air pipe.
The upper end of the regenerative oxidation furnace is provided with a burner.
The regenerative oxidation furnace comprises a regenerative oxidation furnace body, wherein a combustion chamber is arranged at the upper part in the regenerative oxidation furnace body, two left and right regenerative chambers are arranged below the combustion chamber, heat accumulators are filled in the two regenerative chambers, a rotary valve is connected below the two regenerative chambers together, an air inlet of the rotary valve is connected with an exhaust gas introducing fan, an air outlet of the rotary valve is communicated with an air outlet cavity, a combustor is arranged at the upper end of the combustion chamber, and a top high-temperature three-way air pipe is communicated with the combustion chamber.
The air inlet of the rotary valve is communicated with the regenerator positioned at the left side, and the air outlet of the rotary valve is communicated with the regenerator positioned at the right side.
The high-temperature bypass straight pipe is provided with a high-temperature side ventilation valve, the return air straight pipe is provided with a return air valve, and the exhaust straight pipe is provided with an exhaust air valve.
The top high temperature three-way air pipe, the return air straight pipe, the air outlet three-way air pipe and the air outlet cavity are all wrapped with an outer heat preservation layer.
The invention also provides a method for carrying out temporary furnace shutdown heat preservation by adopting the rotary RTO furnace body, which comprises the following steps: when the temporary furnace shutdown is needed for heat preservation, the exhaust gas introducing fan and the combustion-supporting fan are shut down, so that low-temperature exhaust gas and air do not enter the furnace body any more, meanwhile, the high-temperature side ventilation valve and the exhaust air valve are closed, a channel of residual temperature gas lost from a chimney is cut off, the return air valve is opened, residual temperature flue gas sequentially flows through the top high-temperature three-way air pipe, the return air straight pipe, the air outlet three-way air pipe, the air outlet cavity and the heat accumulating type oxidation furnace to form microcirculation, and the residual temperature gas is recycled for heat preservation.
The invention has the advantages that the heat dissipation and cooling speed in the furnace is reduced, the subsequent temperature rise is facilitated, the energy saving purpose is achieved, the frequency of thermal shock of the heat accumulator in the furnace is reduced, and the service life of the heat accumulator is prolonged; on the other hand, the rotary valve of the core part of the furnace body is protected from thermal shock by guiding the flow direction of heat.
Drawings
FIG. 1 is a schematic diagram of a rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation.
In the figure, an organic waste gas pipeline, an exhaust gas introducing fan, a rotary valve, a heat accumulating chamber, a combustion supporting fan, a burner, a combustion chamber, a top high-temperature three-way air pipe, a high-temperature bypass air valve, a high-temperature bypass straight pipe, a return air valve, a return air straight pipe, an external heat insulating layer, a discharge air cavity, a discharge air three-way air pipe, a discharge air valve, a discharge air straight pipe, a chimney, a heat accumulating type oxidation furnace and a heat accumulating type oxidation furnace are respectively arranged in sequence, wherein the exhaust air is introduced into the exhaust gas pipeline, the rotary valve, the heat accumulating type oxidation furnace is arranged in sequence, the rotary valve is arranged in sequence, the heat accumulating type oxidation furnace is arranged in sequence, and the heat accumulating type oxidation furnace is provided with the heat accumulating type oxidation furnace.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses a rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation, which has a structure shown in figure 1, and comprises a heat accumulating type oxidation furnace 19, wherein an air outlet cavity 14 is arranged below the heat accumulating type oxidation furnace 19, the upper part of the side surface of the heat accumulating type oxidation furnace 19 is connected with a top high-temperature three-way air pipe 8, the top high-temperature three-way air pipe 8 is also connected with a high-temperature bypass straight pipe 10 and a return air straight pipe 12, the high-temperature bypass straight pipe 10 is connected with a chimney 18, the return air straight pipe 12 is connected with an air outlet three-way air pipe 15, the air outlet three-way air pipe 15 is also connected with an air outlet cavity 14 and an air exhaust straight pipe 17, the air exhaust straight pipe 17 is connected with the chimney 18, the lower part of the side surface of the heat accumulating type oxidation furnace 19 is connected with an exhaust gas introducing fan 2, and the exhaust gas introducing fan 2 is connected with an organic exhaust gas pipeline 1.
The side upper part of the side surface of the regenerative oxidation furnace 19, which is far away from the top high-temperature three-way air pipe 8, is connected with a combustion-supporting fan 5.
The upper end of the regenerative oxidation furnace 19 is provided with a burner 6.
The regenerative oxidation furnace 19 includes the regenerative oxidation furnace body, and the upper portion is provided with combustion chamber 7 in the regenerative oxidation furnace body, is provided with two regenerators 4 about below the combustion chamber 7, all fills in two regenerators 4 has the regenerator, is connected with rotary valve 3 below two regenerators 4 jointly, and the fan 2 is introduced to the waste gas is connected to the air inlet of rotary valve 3, and the gas outlet and the air-out chamber 14 intercommunication of rotary valve 3, and the combustion chamber 7 upper end is provided with combustor 6, and top high temperature tee bend tuber pipe 8 and combustion chamber 7 intercommunication.
The air inlet of the rotary valve 3 is communicated with the regenerator 4 positioned at the left side, and the air outlet of the rotary valve 3 is communicated with the regenerator 4 positioned at the right side.
The high-temperature bypass straight pipe 10 is provided with the high-temperature bypass ventilation valve 9, the return air straight pipe 12 is provided with the return air valve 11, the exhaust straight pipe 17 is provided with the exhaust air valve 16, the normal operation of the RTO furnace body can not be influenced by controlling the closing of the return air valve 11 and the exhaust air valve 16, and the control can be further controlled in a linkage manner, so that the operation is simple and convenient.
The top high-temperature three-way air pipe 8, the return air straight pipe 12, the air outlet three-way air pipe 15 and the air outlet cavity 14 are all wrapped with the outer heat preservation layer 13, so that heat loss can be reduced to a great extent.
The invention relates to a temporary furnace-stopping heat preservation method of a rotary RTO furnace body, which adopts the rotary RTO furnace body capable of realizing temporary furnace-stopping heat preservation, and comprises the following steps: when the temporary furnace shutdown is needed for heat preservation, the exhaust gas introducing fan 2 and the combustion-supporting fan 5 are shut down, so that low-temperature exhaust gas and air do not enter the furnace body any more, meanwhile, the high-temperature bypass air valve 9 and the exhaust air valve 16 are closed, a channel of residual temperature gas lost from a chimney is cut off, the return air valve 11 is opened, residual temperature flue gas sequentially flows through the top high-temperature three-way air pipe 8, the return air straight pipe 12, the air outlet three-way air pipe 15, the air outlet cavity 14 and the heat accumulating type oxidation furnace 19 to form microcirculation, and the residual temperature gas is recycled for heat preservation.
The working principle of the rotary RTO furnace body of the invention is as follows:
when the RTO furnace body system normally operates, waste gas is drawn to an air inlet of the rotary valve 3 by the waste gas introducing fan 2 arranged on the organic waste gas pipeline 1, enters the combustion chamber 7 after passing through the left half area of the heat accumulation chamber 4, is subjected to oxidative decomposition under the action of the combustion-supporting fan 5 and the combustor 6, and clean gas after oxidative decomposition enters an air outlet of the rotary valve 3 to the air outlet cavity 14 after passing through the right half area of the heat accumulation chamber 4, and is discharged from the chimney 18 through the air outlet three-way air pipe 15 and the air exhaust straight pipe 17.
When the RTO furnace body system needs temporary furnace shutdown heat preservation, the exhaust gas introducing fan 2 and the combustion-supporting fan 5 are shut down, so that low-temperature exhaust gas and air do not enter the furnace body any more, the high-temperature bypass air valve 9 and the exhaust air valve 16 are closed, a channel of residual temperature gas lost from a chimney is cut off, the return air valve 11 is opened, residual temperature flue gas sequentially flows through the top high-temperature three-way air pipe 8, the return air straight pipe 12, the air outlet three-way air pipe 15, the air outlet cavity 14, the rotary valve 3, the regenerative chamber 4 and the combustion chamber 7 to form microcirculation, and the residual temperature gas is recycled, so that the purpose of furnace shutdown heat preservation is achieved.
Claims (6)
1. The utility model provides a rotatory RTO furnace body that can realize interim blowing out heat preservation, its characterized in that includes heat accumulation formula oxidation oven (19), be provided with air-out chamber (14) with heat accumulation formula oxidation oven (19) intercommunication below heat accumulation formula oxidation oven (19), heat accumulation formula oxidation oven (19) side upper portion is connected with top high temperature tee bend tuber pipe (8), top high temperature tee bend tuber pipe (8) still is connected with high temperature bypass straight tube (10) and return air straight tube (12), high temperature bypass straight tube (10) are connected with chimney (18), return air straight tube (12) are connected with air-out tee bend tuber pipe (15), air-out tee bend tuber pipe (15) still are connected with air-out chamber (14) and straight tube (17) of airing exhaust, straight tube (17) of airing exhaust connect chimney (18), heat accumulation formula oxidation oven (19) side lower part is connected with waste gas introducing fan (2), waste gas introducing fan (2) are connected with organic waste gas pipeline (1);
the high-temperature bypass straight pipe (10) is provided with a high-temperature bypass ventilation valve (9), the return air straight pipe (12) is provided with a return air valve (11), and the exhaust straight pipe (17) is provided with an exhaust air valve (16);
the upper end of the regenerative oxidation furnace (19) is provided with a burner (6).
2. The rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation according to claim 1, wherein a combustion-supporting fan (5) is connected to one side, far away from the top high-temperature three-way air pipe (8), of the upper part of the side surface of the regenerative oxidation furnace (19).
3. The rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation according to claim 1, wherein the regenerative oxidation furnace (19) comprises a regenerative oxidation furnace body, a combustion chamber (7) is arranged at the upper part in the regenerative oxidation furnace body, two left and right regenerators (4) are arranged below the combustion chamber (7), heat storages are filled in the two regenerators (4), rotary valves (3) are connected below the two regenerators (4) jointly, an air inlet of the rotary valves (3) is connected with an exhaust gas introducing fan (2), an air outlet of the rotary valves (3) is communicated with an air outlet cavity (14), a combustor (6) is arranged at the upper end of the combustion chamber (7), and a top high-temperature three-way air pipe (8) is communicated with the combustion chamber (7).
4. A rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation according to claim 3, characterized in that the air inlet of the rotary valve (3) is communicated with a regenerator (4) positioned at the left side, and the air outlet of the rotary valve (3) is communicated with a regenerator (4) positioned at the right side.
5. A rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation according to any one of claims 1-3, characterized in that the top high temperature three-way air pipe (8), the return air straight pipe (12), the air outlet three-way air pipe (15) and the air outlet cavity (14) are all wrapped with an external heat preservation layer (13).
6. A temporary furnace-stopping heat preservation method of a rotary RTO furnace body, which is characterized in that the rotary RTO furnace body capable of realizing temporary furnace-stopping heat preservation is adopted according to the claim 2, and the specific method is as follows: when the temporary furnace shutdown is needed for heat preservation, the exhaust gas introducing fan (2) and the combustion-supporting fan (5) are shut down, so that low-temperature exhaust gas and air do not enter the furnace body any more, meanwhile, the high-temperature side ventilation valve (9) and the exhaust air valve (16) are closed, a channel for residual temperature gas to flow out of a chimney is cut off, the return air valve (11) is opened, residual temperature flue gas sequentially flows through the top high-temperature three-way air pipe (8), the return air straight pipe (12), the air outlet three-way air pipe (15), the air outlet cavity (14) and the heat accumulating type oxidation furnace (19) to form microcirculation, and the residual temperature gas is recycled for heat preservation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711184031.7A CN107781829B (en) | 2017-11-23 | 2017-11-23 | Rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation and heat preservation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711184031.7A CN107781829B (en) | 2017-11-23 | 2017-11-23 | Rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation and heat preservation method thereof |
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| Publication Number | Publication Date |
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| CN107781829A CN107781829A (en) | 2018-03-09 |
| CN107781829B true CN107781829B (en) | 2023-12-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870415B (en) * | 2018-03-30 | 2021-05-14 | 苏州巨联环保有限公司 | Rotary heat-storage combustion device and three-compartment type heat-storage combustion device |
| EP4249802A1 (en) * | 2022-03-24 | 2023-09-27 | John Zink KEU GmbH | Regenerative thermal oxidizer, system comprising a regenerative thermal oxidizer and method of operating a regenerative thermal oxidizer |
| CN114753927A (en) * | 2022-05-11 | 2022-07-15 | 克兰茨(海南)科技有限公司 | Novel combined heat and power generation system based on RTO and working method thereof |
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