CN111964023B - Waste gas waste heat recovery system - Google Patents
Waste gas waste heat recovery system Download PDFInfo
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- CN111964023B CN111964023B CN202010894691.XA CN202010894691A CN111964023B CN 111964023 B CN111964023 B CN 111964023B CN 202010894691 A CN202010894691 A CN 202010894691A CN 111964023 B CN111964023 B CN 111964023B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- 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
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- 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
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Air Supply (AREA)
Abstract
The invention relates to the field of waste heat recovery, in particular to a waste gas waste heat recovery system which comprises a catalytic oxidation bed, a waste heat furnace, a preheater, a heat exchanger and a steam pocket, wherein the catalytic oxidation bed comprises a heat exchange section, a heating section and a catalytic section, the preheater comprises a waste gas outlet and a gas inlet, the waste gas outlet of the preheater, the heat exchange section, the heating section, the catalytic section, the waste heat furnace and the gas inlet of the preheater are sequentially communicated with the heat exchanger, a control valve is arranged between the preheater and the heat exchanger, the steam pocket is communicated with the waste heat furnace, and the catalytic section, the heat exchange section and the heat exchanger are communicated. When the technical scheme is adopted, the waste heat utilization rate is favorably improved.
Description
Technical Field
The invention relates to the field of waste heat recovery, in particular to a waste gas waste heat recovery system.
Background
The catalytic oxidation process is commonly used in VOC waste gas treatment, and the process utilizes a catalyst to enable organic waste gas to be subjected to flameless combustion at a low ignition temperature, so that the organic waste gas is decomposed into nontoxic carbon dioxide and water, and the purpose of waste gas treatment is achieved. At present, the heat after burning is brought out by gas and exchanges heat with the waste gas to be burnt, and part of heat is recycled, so that the problem of low waste heat utilization rate exists.
Disclosure of Invention
The invention aims to provide a recovery system which is beneficial to improving the utilization rate of waste heat after waste gas is combusted.
In order to achieve the purpose, the technical scheme of the invention provides a waste gas waste heat recovery system which comprises a catalytic oxidation bed, a waste heat furnace, a preheater, a heat exchanger and a steam pocket, wherein the catalytic oxidation bed comprises a heat exchange section, a heating section and a catalytic section, the preheater comprises a waste gas outlet and a gas inlet, the waste gas outlet of the preheater, the heat exchange section, the heating section, the catalytic section, the waste heat furnace and the gas inlet of the preheater are sequentially communicated with the heat exchanger, a control valve is arranged between the preheater and the heat exchanger, the steam pocket is communicated with the waste heat furnace, and the catalytic section, the heat exchange section and the heat exchanger are communicated.
The technical effect of the scheme is as follows: waste gas from a waste gas outlet of the preheater sequentially passes through a heat exchange section, a heating section and a catalysis section, and then is flameless combusted in the catalysis section to generate high-temperature gas with the temperature of 350-; the gas after passing through the waste heat furnace enters the preheater through a gas inlet of the preheater to exchange heat with the waste gas, and the heat is recovered for the second time, so that the multi-stage heat recovery is achieved, and the utilization rate of the waste heat is improved.
When the steam is not needed, the control valve is closed, the waste gas passing through the preheater enters the catalytic oxidation bed, the high-temperature gas generated after the waste gas is flameless combusted in the catalytic section enters the heat exchange section to exchange heat with the waste gas entering the catalytic oxidation bed, the temperature of the recovered heat energy is reduced to about 120 ℃, the recovered heat energy enters the heat exchanger, the industrial water in the heat exchanger is continuously heated, and the hot water is prepared to be used externally.
Furthermore, a heat exchange mechanism is arranged in the heat exchange section, the heat exchange mechanism comprises a hot air pipe, an exhaust gas pipe and two connecting pipes, the hot air pipe is obliquely arranged, the upper end of the hot air pipe is communicated with the catalytic section, and the lower end of the hot air pipe is communicated with the heat exchanger; the waste gas pipe is rotationally arranged in the hot gas pipe, a spiral sheet and a collecting disc are fixed on the waste gas pipe, and a collecting cavity communicated with the waste gas pipe is arranged in the collecting disc; the two connecting pipes are fixedly arranged in the heat exchange section and sleeved outside the waste gas pipe, and are respectively positioned at the upper end and the lower end of the waste gas pipe; the side wall of the waste gas pipe and the side wall of the connecting pipe are both provided with holes which can be communicated, the hole of the connecting pipe at the lower end is communicated with the preheater, and the hole of the connecting pipe at the upper end is communicated with the heating section. The technical effect of the scheme is as follows: high-temperature gas generated after the gas is flameless combusted in the catalytic section enters the hot gas pipe from the upper end of the hot gas pipe, the exhaust gas pipe rotates to drive the spiral piece to rotate, the high-temperature gas flows under the flow guide extrusion action of the spiral piece, and the heat is fully transferred to the exhaust gas pipe; when the high-temperature gas flows to the collecting disc, a gap is formed between the collecting disc and the inner side wall of the hot gas pipe, when the high-temperature gas passes through the gap, the high-temperature gas is compressed under the extrusion action of the spiral piece, and the high-temperature gas expands after passing through the collecting disc, so that the temperature of the high-temperature gas is reduced, heat is transferred to the waste gas pipe, and compared with the prior art, the heat exchange amount is more, and the heat exchange efficiency is improved by nearly 20%; in addition, high-temperature gas is quickly discharged out of the hot gas pipe under the extrusion action of the spiral sheet, so that on one hand, the phenomenon that the gas losing heat absorbs heat reversely can be avoided, on the other hand, the hot gas is favorably and quickly discharged, and the leakage of a heat exchange section, a heating section or a catalysis section of the oxidation bed is avoided.
When the holes on the waste gas pipe and the holes on the connecting pipe are aligned and communicated in the rotating process of the waste gas pipe, waste gas passing through the preheater is sprayed from the lower end of the waste gas pipe into the waste gas pipe to absorb heat transferred to the waste gas pipe by high-temperature gas; in the process that the waste gas pipe continues to rotate, when the holes in the waste gas pipe are staggered with the holes in the connecting pipe, waste gas passing through the preheater is blocked and cannot enter the waste gas pipe, and the waste gas entering the waste gas pipe is enabled to absorb heat sufficiently through intermittent air intake, so that the combustion effect of the waste gas is improved; and the waste gas is at the intraductal in-process that flows of waste gas, and the particulate matter in the waste gas gets into the collection intracavity of collecting tray, also is favorable to improving the combustion effect of waste gas.
In conclusion, the invention proposes the inventive concept of 'gas storage pressurization heat transfer', fully improves the heat exchange efficiency and the combustion effect of waste gas, and simultaneously avoids the condition of gas leakage of a recovery system.
Furthermore, the hole of the connecting pipe at the lower end is arranged downwards, the hole of the connecting pipe at the upper end is arranged upwards, and the holes at the upper end and the lower end of the exhaust gas pipe are arranged at the same side of the exhaust gas pipe. The technical effect of the scheme is as follows: the waste gas is discharged out of the waste gas pipe after being fully subjected to heat transfer in the waste gas pipe.
Further, still include the spark arrester, the exhaust outlet intercommunication of one end and pre-heater of spark arrester, the other end and the heat transfer section intercommunication of spark arrester. The technical effect of the scheme is as follows: is favorable for avoiding the fire spread in the catalytic oxidation bed and improving the safety performance.
Further, still include the fan, the preheater still includes the waste gas import, and the fan communicates with the waste gas import of preheater. The technical effect of the scheme is as follows: the pressure in the flowing process of the waste gas is improved, and when the holes in the waste gas pipe and the holes in the connecting pipe are communicated in an aligning mode, the waste gas passing through the preheater can be sprayed into the waste gas pipe from the lower end of the waste gas pipe.
Further, still include the water pump, the water pump is connected with the steam pocket. The technical effect of the scheme is as follows: steam generated in the steam drum is condensed into hot water through the gas-using equipment, and the hot water can be supplemented into the steam drum in time under the action of the water pump.
Further, the inclination angle of the hot air pipe is 30 °. The technical effect of the scheme is as follows: and the smooth flow of the waste gas entering from the lower end of the waste gas pipe is more facilitated.
Further, a collecting tray is located at the lower end of the exhaust pipe. The technical effect of the scheme is as follows: be convenient for collect the particulate matter, high temperature gas expansion reduces the temperature simultaneously and with heat transfer for the exhaust-gas line after, the waste gas of spraying in the exhaust-gas line can carry out the heat exchange with the exhaust-gas line immediately.
Furthermore, the waste heat furnace and the preheater are manufactured into a whole. The technical effect of the scheme is as follows: the waste heat furnace and the preheater are manufactured into a whole, so that the loss of heat can be reduced.
Furthermore, the upper end and the lower end of the spiral sheet on the exhaust gas pipe are distributed sparsely, and the middle part is distributed densely. The technical effect of the scheme is as follows: the hot air at the upper end of the hot air pipe is convenient to be guided and pressurized quickly.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of a heat exchange mechanism.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a fan 1, a flame arrester 2, a catalytic oxidation bed 3, a heat exchange section 3-1, a heating section 3-2, a catalytic section 3-3, a waste heat furnace 4, a preheater 5, a control valve 6, a steam drum 7, a water pump 8, a heat exchanger 9, steam equipment 10, a servo motor 11, a hot air pipe 12, a waste gas pipe 13, a connecting pipe 14, a spiral piece 15, a collecting disc 16, a collecting cavity 17 and a hole 18.
The first embodiment is as follows:
the first embodiment is basically as shown in the attached figures 1 and 2: the waste gas waste heat recovery system shown in fig. 1 comprises a fan 1, a flame arrester 2, a catalytic oxidation bed 3, a waste heat furnace 4, a preheater 5, a heat exchanger 9, a steam drum 7, a water pump 8 and a pipeline. Preheater 5 includes waste gas inlet, exhaust outlet, gas inlet and gas outlet, and fan 1 passes through the pipeline and communicates with preheater 5's waste gas inlet, and spark arrester 2 passes through the pipeline and preheaters 5's waste gas outlet intercommunication.
The catalytic oxidation bed 3 comprises a heat exchange section 3-1, a heating section 3-2 and a catalysis section 3-3, a flame arrester 2, the heat exchange section 3-1, the heating section 3-2, the catalysis section 3-3, a waste heat furnace 4, a gas inlet of a preheater 5 and a heat exchanger 9 are communicated in sequence through pipelines, and a control valve 6 is arranged on the pipeline between the preheater 5 and the heat exchanger 9.
The steam drum 7 is communicated with the waste heat furnace 4 to form a circulation pipeline, and meanwhile, the steam drum 7 is sequentially communicated with the steam device 10 and the hot water pump 8 through pipelines to form a circulation pipeline. An internal channel is arranged between the catalytic section 3-3 and the heat exchange section 3-1 of the catalytic oxidation bed 3, namely the catalytic section 3-3 and the heat exchange section 3-1 are communicated with the heat exchanger 9.
The specific implementation process is as follows:
as shown in figure 1, waste gas is sent into a preheater 5 by a fan 1, gas from a waste gas outlet of the preheater 5 enters a catalytic oxidation bed 3 after passing through a flame arrester 2, the catalytic oxidation bed 3 is divided into a heat exchange section 3-1, a heating section 3-2 and a catalytic section 3-3, and the gas is flameless combusted in the catalytic section 3-3 after passing through the catalytic section 3-3 in sequence at the temperature of 350-.
High-temperature gas from the catalytic oxidation bed 3 enters a waste heat furnace 4, hot water from a steam drum 7 is heated and converted into steam, the steam flows back to the steam drum 7 for steam-liquid separation, steam is generated as a byproduct, and hot water condensed after the steam is used by external steam equipment 10 is recycled to the steam drum 7 through a water pump 8.
The gas from the waste heat furnace 4 enters the preheater 5 to exchange heat with the waste gas from the fan 1, the heat is recovered for the second time, and the gas after heat recovery comes out from the preheater 5 and is discharged after reaching the standard from the position A through the control valve 6 (at the moment, the control valve 6 is in an open state) and the heat exchanger 9.
When the steam is not needed, the control valve 6 is closed; the waste gas is sent into a preheater 5 by a fan 1, the gas from the preheater 5 enters a catalytic oxidation bed 3 after passing through a flame arrester 2, and the gas is flameless combusted in a catalytic section 3-3 of the catalytic oxidation bed 3 at the temperature of 350-. High-temperature gas enters a heat exchange section 3-1 through an internal channel of the catalytic oxidation bed 3 to exchange heat with waste gas entering the catalytic oxidation bed 3, the temperature of recovered heat energy is reduced to about 120 ℃ and then enters a heat exchanger 9, a coil is arranged in the heat exchanger 9, the gas continuously heats industrial water flowing into the coil of the heat exchanger 9 from the upper part of the heat exchanger 9, and the industrial water is made into hot water which is discharged from a position B for external use; the gas is discharged from the shell of the heat exchanger 9.
Example two:
on the basis of the first embodiment, as shown in fig. 1, a heat exchange mechanism is arranged in the heat exchange section 3-1, as shown in fig. 2, the heat exchange mechanism comprises a servo motor 11, a hot air pipe 12, an exhaust gas pipe 13 and two connecting pipes 14, the hot air pipe 12 is obliquely and fixedly arranged in the heat exchange section 3-1 through bolts, the upper end of the hot air pipe 12 is communicated with the catalytic section 3-3 through an internal channel, and the lower end of the hot air pipe 12 is communicated with the heat exchanger 9 through a pipeline.
The servo motor 11 is fixedly installed in the heat exchange section 3-1 through bolts, the type of the servo motor 11 can be MR-J2S-100A, the lower end of the waste gas pipe 13 is welded with the output shaft of the servo motor 11, the upper end of the waste gas pipe 13 is rotatably connected with the side wall of the catalytic oxidation bed 3, and the waste gas pipe 13 is rotatably arranged in the hot gas pipe 12.
The exhaust pipe 13 is welded with a spiral piece 15 and a collecting tray 16, a collecting cavity 17 is arranged in the collecting tray 16, and the collecting cavity 17 is communicated with the exhaust pipe 13. The side wall of the catalytic oxidation bed 3 is welded with a support rod, the two connecting pipes 14 are welded with the support rod, the two connecting pipes 14 are sleeved outside the exhaust gas pipe 13, namely, the exhaust gas pipe 13 is rotatably connected with the two connecting pipes 14, and the two connecting pipes 14 are respectively positioned at the upper end and the lower end of the exhaust gas pipe 13.
The side wall of the waste gas pipe 13 and the side wall of the connecting pipe 14 are both provided with a hole 18 which can be communicated, the hole 18 of the connecting pipe 14 at the lower end is communicated with the flame arrester 2 through a pipeline, and the hole 18 of the connecting pipe 14 at the upper end is communicated with the heating section 3-2 through a pipeline. The holes 18 of the connecting pipe 14 at the lower end are disposed downward, the holes 18 of the connecting pipe 14 at the upper end are disposed upward, and the holes 18 at the upper and lower ends of the exhaust gas pipe 13 are disposed at the same side of the exhaust gas pipe 13, i.e., when the exhaust gas pipe 13 rotates to the state shown in fig. 2, the holes 18 at the upper and lower ends of the exhaust gas pipe 13 are disposed at the lower side of the exhaust gas pipe 13.
The specific implementation process is as follows:
when steam is not needed, high-temperature gas enters the hot gas pipe 12 from the upper end of the hot gas pipe 12 after passing through the internal channel of the catalytic oxidation bed 3, the servo motor 11 drives the waste gas pipe 13 to rotate, the spiral piece 15 is driven to rotate in the process, the high-temperature gas flows under the flow guide extrusion effect of the spiral piece 15, and heat is fully transferred to the waste gas pipe 13.
When high-temperature gas flows to the collecting disc 16, because a gap is formed between the collecting disc 16 and the inner side wall of the hot gas pipe 12, the high-temperature gas is compressed under the extrusion effect of the spiral piece 15 when passing through the gap, and the high-temperature gas expands after passing through the collecting disc 16, so that the temperature of the high-temperature gas is reduced, heat is transferred to the waste gas pipe 13, and compared with the prior art, the heat exchange amount is more, and the heat exchange efficiency is improved by nearly 20%.
In addition, high-temperature gas is quickly discharged out of the hot gas pipe 12 under the extrusion action of the spiral sheet 15, so that on one hand, the heat absorption of the gas losing heat can be avoided, on the other hand, the hot gas is favorably and quickly discharged, and the waste gas or gas leakage of the heat exchange section 3-1, the heating section 3-2 or the catalysis section 3-3 of the oxidation bed is avoided.
When the hole 18 on the exhaust pipe 13 is aligned and communicated with the hole 18 on the connecting pipe 14 in the rotating process of the exhaust pipe 13, the exhaust gas passing through the flame arrester 2 is sprayed into the exhaust pipe 13 from the lower end of the exhaust pipe 13 to absorb the heat transferred to the exhaust pipe 13 by the high-temperature gas; in the process that the waste gas pipe 13 continues to rotate, when the holes 18 in the waste gas pipe 13 are staggered with the holes 18 in the connecting pipe 14, the waste gas passing through the preheater 5 is blocked and cannot enter the waste gas pipe 13, and the waste gas entering the waste gas pipe 13 is enabled to absorb heat sufficiently through intermittent air intake, so that the combustion effect of the waste gas is improved; and in the process that the waste gas flows in the waste gas pipe 13, particulate matters in the waste gas enter the collecting cavity 17 of the collecting disc 16 to be collected, so that the combustion effect of the waste gas is improved.
Example three:
on the basis of the second embodiment, as shown in fig. 2, the inclination angle of the hot air pipe 12 is 30 ° in this embodiment, the collecting tray 16 is located at the lower end of the exhaust gas pipe 13, meanwhile, the spiral pieces 15 at the upper and lower ends of the exhaust gas pipe 13 are distributed more sparsely, and the pitch distribution of the spiral pieces 15 at the middle part of the exhaust gas pipe 13 is more dense. In addition, as shown in fig. 1, the waste heat furnace 4 and the preheater 5 are integrally formed, that is, the tail of the waste heat furnace 4 and the gas inlet of the preheater 5 are directly welded and communicated.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (9)
1. The utility model provides an exhaust gas waste heat recovery system which characterized in that: the catalytic oxidation bed comprises a heat exchange section, a heating section and a catalytic section, the preheater comprises a waste gas outlet and a gas inlet, the waste gas outlet, the heat exchange section, the heating section, the catalytic section, the waste heat furnace and the gas inlet of the preheater are sequentially communicated with the heat exchanger, a control valve is arranged between the preheater and the heat exchanger, the steam pocket is communicated with the waste heat furnace, and the catalytic section, the heat exchange section and the heat exchanger are communicated; a heat exchange mechanism is arranged in the heat exchange section, the heat exchange mechanism comprises a hot air pipe, an exhaust gas pipe and two connecting pipes, the hot air pipe is obliquely arranged, the upper end of the hot air pipe is communicated with the catalytic section, and the lower end of the hot air pipe is communicated with the heat exchanger; the waste gas pipe is rotationally arranged in the hot gas pipe, a spiral sheet and a collecting disc are fixed on the waste gas pipe, and a collecting cavity communicated with the waste gas pipe is arranged in the collecting disc; the two connecting pipes are fixedly arranged in the heat exchange section and sleeved outside the waste gas pipe, and are respectively positioned at the upper end and the lower end of the waste gas pipe; the side wall of the waste gas pipe and the side wall of the connecting pipe are both provided with holes which can be communicated, the hole of the connecting pipe at the lower end is communicated with the preheater, and the hole of the connecting pipe at the upper end is communicated with the heating section.
2. The exhaust gas waste heat recovery system according to claim 1, characterized in that: the hole that is located the connecting pipe of lower extreme sets up down, and the hole that is located the connecting pipe of upper end sets up, and the hole at both ends is located same one side of exhaust gas pipe about the exhaust gas pipe.
3. The exhaust gas waste heat recovery system according to claim 2, characterized in that: the heat exchange section is communicated with the heat exchange section, and the heat exchange section is communicated with the heat exchange section.
4. The exhaust gas waste heat recovery system according to claim 3, characterized in that: still include the fan, the preheater still includes the waste gas import, and the fan communicates with the waste gas import of preheater.
5. The exhaust gas waste heat recovery system according to claim 4, characterized in that: the steam-assisted boiler also comprises a water pump, and the water pump is communicated with the steam drum.
6. The exhaust gas waste heat recovery system according to claim 5, characterized in that: the inclination angle of the hot air pipe is 30 degrees.
7. The exhaust gas waste heat recovery system according to claim 6, characterized in that: the collecting tray is located at the lower end of the exhaust pipe.
8. The exhaust gas waste heat recovery system according to claim 7, characterized in that: the waste heat furnace and the preheater are manufactured into a whole.
9. The exhaust gas waste heat recovery system according to claim 8, characterized in that: the upper end and the lower end of the spiral sheet on the exhaust gas pipe are distributed sparsely, and the middle part is distributed densely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010894691.XA CN111964023B (en) | 2020-08-31 | 2020-08-31 | Waste gas waste heat recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010894691.XA CN111964023B (en) | 2020-08-31 | 2020-08-31 | Waste gas waste heat recovery system |
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| CN111964023A CN111964023A (en) | 2020-11-20 |
| CN111964023B true CN111964023B (en) | 2022-02-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003265927A (en) * | 2002-03-15 | 2003-09-24 | Ngk Insulators Ltd | METHOD OF TREATING EXHAUST GAS AND CATALYST BODY USEFUL FOR DECOMPOSING PAHs |
| CN202485010U (en) * | 2012-02-28 | 2012-10-10 | 苏州乔尼设备工程有限公司 | Catalytic combustion equipment for organic exhaust gas |
| CN203916459U (en) * | 2014-07-07 | 2014-11-05 | 宁波弘景环保科技有限公司 | VOCs treatment and residual neat recovering system |
| CN105091001A (en) * | 2015-09-01 | 2015-11-25 | 黎明化工研究设计院有限责任公司 | Waste gas burning processing equipment |
| CN204943513U (en) * | 2015-09-01 | 2016-01-06 | 云南大为恒远化工有限公司 | A kind of tail gas recycling system of maleic anhydride production |
| CN110523273A (en) * | 2019-09-10 | 2019-12-03 | 浙江伟博化工科技有限公司 | A kind of benzoic anhydride tail-gas catalysis high-efficient treatment device |
-
2020
- 2020-08-31 CN CN202010894691.XA patent/CN111964023B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003265927A (en) * | 2002-03-15 | 2003-09-24 | Ngk Insulators Ltd | METHOD OF TREATING EXHAUST GAS AND CATALYST BODY USEFUL FOR DECOMPOSING PAHs |
| CN202485010U (en) * | 2012-02-28 | 2012-10-10 | 苏州乔尼设备工程有限公司 | Catalytic combustion equipment for organic exhaust gas |
| CN203916459U (en) * | 2014-07-07 | 2014-11-05 | 宁波弘景环保科技有限公司 | VOCs treatment and residual neat recovering system |
| CN105091001A (en) * | 2015-09-01 | 2015-11-25 | 黎明化工研究设计院有限责任公司 | Waste gas burning processing equipment |
| CN204943513U (en) * | 2015-09-01 | 2016-01-06 | 云南大为恒远化工有限公司 | A kind of tail gas recycling system of maleic anhydride production |
| CN110523273A (en) * | 2019-09-10 | 2019-12-03 | 浙江伟博化工科技有限公司 | A kind of benzoic anhydride tail-gas catalysis high-efficient treatment device |
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| Publication number | Publication date |
|---|---|
| CN111964023A (en) | 2020-11-20 |
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