CN113375171A - Integrated RTO system embedded in heat exchange equipment - Google Patents

Integrated RTO system embedded in heat exchange equipment Download PDF

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Publication number
CN113375171A
CN113375171A CN202110490356.8A CN202110490356A CN113375171A CN 113375171 A CN113375171 A CN 113375171A CN 202110490356 A CN202110490356 A CN 202110490356A CN 113375171 A CN113375171 A CN 113375171A
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CN
China
Prior art keywords
heat exchange
equipment
rto
valve
embedded heat
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Pending
Application number
CN202110490356.8A
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Chinese (zh)
Inventor
何群伟
李良城
仲梅
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Suzhou Krantz Environment Technology Co ltd
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Suzhou Krantz Environment Technology Co ltd
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Application filed by Suzhou Krantz Environment Technology Co ltd filed Critical Suzhou Krantz Environment Technology Co ltd
Priority to CN202110490356.8A priority Critical patent/CN113375171A/en
Publication of CN113375171A publication Critical patent/CN113375171A/en
Pending legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/22—Drums; Headers; Accessories therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • 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
    • 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
    • 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
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention discloses an integrated RTO system embedded in heat exchange equipment, wherein a combustion chamber is arranged in the RTO equipment, the top of the combustion chamber is provided with the embedded heat exchange equipment between adjacent function chambers, a high-concentration VOCs waste gas inlet pipe is connected with an induced draft system through a valve, the induced draft system is communicated with the bottom of each function chamber through a valve, and the bottom of each function chamber is respectively connected with a chimney through a valve; when the equipment is used for treating abnormal working conditions, the high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe is directly introduced into the chimney or is discharged to the chimney through an emergency bypass pipeline. The heat exchange equipment is embedded into the RTO system, so that the function of the heat exchange equipment on the high-temperature part of the RTO heat accumulator is replaced in principle, and the comprehensive heat treatment capacity of the system is improved to a great extent.

Description

Integrated RTO system embedded in heat exchange equipment
Technical Field
The invention relates to an integrated RTO system embedded in heat exchange equipment, and belongs to the technical field of waste gas treatment.
Background
Volatile organic compounds (voc) are important components of atmospheric pollutants, and mainly come from petrochemical, pharmaceutical production, paint decoration, transportation, garbage storage, and other processes. VOCs together with sulfates and nitrates generated by SO2, NOX and the like can generate haze mainly comprising PM2.5 fine particles under the action of light, and serious influence is caused on human health. In the prior art, the treatment process of the VOCs mainly includes an absorption method, a direct adsorption method, an adsorption + combustion method, a low-temperature plasma method, a biological method and the like, wherein the adsorption + combustion method is most widely applied and mainly includes technologies of catalytic Combustion (CO), regenerative combustion (RTO), regenerative catalytic combustion (RCO) and the like.
At present, due to the influence of economic factors such as investment budget, spatial arrangement and the like and the limitation of the prior art, the problem of over-temperature at the top of RTO equipment for treating high-concentration VOCs waste gas often occurs, so that the safety and the service life of the equipment are influenced. In order to avoid the problem, a hot bypass is additionally arranged at the top of the RTO, the opening of the valve is automatically adjusted according to the temperature of the combustion chamber, and the gas exhausted by the hot bypass belongs to clean gas, but the exhaust gas temperature is as high as above 850 ℃, and the exhaust gas must be treated to meet the safe emission standard. Aiming at the design, the existing general method is to add equipment such as a heat exchanger or a waste heat boiler after heat bypass to absorb redundant heat and prepare products such as steam and hot water, the exhaust temperature after the heat exchange equipment is about 200 plus 300 ℃, and the safety emission requirement can be met, but from the aspect of comprehensive energy efficiency, the energy waste to a great extent still exists, and the combination of an RTO system and a waste heat boiler system has complex pipeline arrangement process and larger occupied space, and the problem of technical process mismatching often exists.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: at present, due to the influence of economic factors such as investment budget, spatial arrangement and the like and the limitation of the prior art, the problem of over-temperature at the top of RTO equipment for treating high-concentration VOCs waste gas often occurs, so that the safety and the service life of the equipment are influenced.
In order to solve the problems, the invention provides an integrated RTO system embedded into heat exchange equipment, wherein a combustion chamber is arranged in the RTO equipment, an ignition device is arranged at the top of the combustion chamber, a plurality of function chambers which are sequentially arranged are arranged below the combustion chamber, the embedded heat exchange equipment is arranged between the adjacent function chambers at the top of the combustion chamber, a high-concentration VOCs waste gas inlet pipe is connected with an induced air system through a valve, the induced air system is communicated with the bottom of each function chamber through a valve, and the bottom of each function chamber is respectively connected with a chimney through a valve; when the equipment is used for treating abnormal working conditions, the high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe is directly introduced into the chimney or is discharged to the chimney through an emergency bypass pipeline.
Preferably, the functional chamber comprises a cleaning chamber, a heating chamber and a cooling chamber in sequence.
Preferably, the bottom of each functional chamber is connected with an air inlet of an induced draft system through a valve.
Preferably, the air inlet of the induced draft system is communicated with the fresh air system through a fresh air valve.
More preferably, after the RTO equipment is started, the system is purged and heated by fresh air introduced by the fresh air system.
Preferably, the induced draft system is driven by a fan motor, which is controlled by a frequency converter.
Preferably, the embedded heat exchange equipment comprises a water supply system, a water wall tube and a steam drum, wherein the water wall tube is arranged in the combustion chamber, high-temperature flue gas with the temperature of above 850 ℃ continuously heats the water wall in the reaction process, the water supply is heated in the tube to be changed into steam to enter the steam drum, and the steam is regulated by a steam-water separator in the steam drum to discharge high-grade steam for other production equipment.
Preferably, the high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe enters into RTO equipment for thermal oxidation, CO2 and water are generated after oxidative decomposition, and the clean gas is discharged to a chimney through a pipeline at the bottom of a functional chamber in the RTO equipment.
Preferably, a combustion chamber air volume control valve is arranged below the embedded heat exchange device and is mainly used for dynamically adjusting and controlling the air volume in the combustion chamber, so that local overtemperature caused by uneven heating of a water cooling wall in the combustion process is prevented, and meanwhile, the steam pressure and the temperature in a steam drum are ensured.
The invention provides an integrated high-concentration VOCs waste gas treatment system with heat exchange equipment embedded into RTO, which not only can solve the problem of overtemperature at the top of ROT equipment for treating high-concentration VOCs, but also can realize productization and integration of the original process system, thereby avoiding the problems of technical process mismatching of an RTO system and a waste heat boiler system in the design and installation process and the like, and on the other hand, the integrated system greatly saves the occupied space from the aspect of economy, reduces the complicated external connecting pipeline arrangement, avoids the problem of energy loss still existing in the traditional process equipment after heat exchange, and realizes optimization and promotion of the energy efficiency of the comprehensive system. In addition, the heat exchange equipment is embedded into the RTO system, so that the function of the heat exchange equipment on the high-temperature part of the RTO heat accumulator is replaced in principle, and the comprehensive heat treatment capacity of the system is improved to a great extent.
Compared with the prior art, the invention has the beneficial effects that:
1. the problem of top overtemperature of RTO (room temperature oxidation) for treating waste gas containing high-concentration VOCs (volatile organic compounds) is effectively solved;
2. the original process system is realized productively and integrally. On one hand, the problems that the technical process of an RTO system is not matched with that of a waste heat boiler system in the design and installation process are avoided, on the other hand, the integrated system greatly saves the occupied space from the economical aspect, the complex external connecting pipeline arrangement is reduced, the problem of energy loss still existing after heat exchange of the traditional process equipment is avoided, and the energy efficiency of the integrated system is optimized and improved;
3. the function substitution of the heat exchange equipment for the high-temperature part of the RTO heat accumulator is realized in principle, and the comprehensive heat treatment capacity of the system is greatly improved.
4. The problems of energy consumption, complex pipeline arrangement, large occupied area and other production benefits brought by the traditional process are fundamentally solved.
Drawings
FIG. 1 is a schematic diagram of an integrated RTO system with embedded heat exchange equipment according to the present invention.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1, the integrated RTO system embedded in heat exchange equipment provided by the present invention includes RTO equipment 4, a combustion chamber is provided in RTO equipment 4, an ignition device 7 is provided at the top of the combustion chamber, three functional chambers arranged in sequence, namely a cleaning chamber, a heating chamber, and a cooling chamber, are provided below the combustion chamber. An embedded heat exchange device 5 is arranged at the top of the combustion chamber relative to the space between adjacent functional chambers, and a combustion chamber air volume control valve 6 is arranged below the embedded heat exchange device 5.
High concentration VOCs waste gas intake pipe 8 passes through valve b and connects induced air system 3, and induced air system 3 communicates through valve d, valve g, valve j respectively with the bottom of purge chamber, heating chamber, cooling chamber, and the bottom of purge chamber, heating chamber, cooling chamber is respectively through valve f, valve i, valve l connection chimney 9. The bottoms of the cleaning chamber, the heating chamber and the cooling chamber are respectively connected with an air inlet of the induced draft system 3 through a valve e, a valve h and a valve k.
The high-concentration VOCs waste gas inlet pipe 8 is further connected with an emergency bypass pipeline 1 through a valve a, and a chimney 9 is connected with the gas outlet of the emergency bypass pipeline 1.
When the equipment is used for treating abnormal working conditions, the high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe 8 is directly introduced into the chimney 9 or is directly discharged to the chimney 9 through the emergency bypass pipeline 1.
And the air inlet of the induced draft system 3 is also communicated with the fresh air system 2 through a fresh air valve c.
And after the RTO equipment 4 is started, the system is purged and heated by fresh air introduced by the fresh air system 2.
The induced draft system 3 is driven by a fan motor, which is controlled by a frequency converter.
The embedded heat exchange equipment 5 comprises a water supply system, a water wall pipe and a steam drum, wherein the water wall pipe is arranged in the combustion chamber, high-temperature flue gas with the temperature of more than 850 ℃ continuously heats the water wall in the reaction process, the water supply is heated in the pipe to be changed into steam to enter the steam drum, and the steam is regulated by a steam-water separator in the steam drum to discharge high-grade steam for other production equipment.
The high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe 8 enters the RTO equipment 4 for thermal oxidation, and CO is generated after oxidative decomposition2And water, and the gas which becomes clean is discharged to a chimney 9 through a pipeline at the bottom of the functional chamber in the RTO equipment.

Claims (9)

1. An integrated RTO system with embedded heat exchange equipment is characterized in that a combustion chamber is arranged in the RTO equipment (4), an ignition device (7) is arranged at the top of the combustion chamber, a plurality of function chambers which are sequentially arranged are arranged below the combustion chamber, the embedded heat exchange equipment (5) is arranged at the top of the combustion chamber relative to the adjacent function chambers, a high-concentration VOCs waste gas inlet pipe (8) is connected with an induced air system (3) through a valve, the induced air system (3) is communicated with the bottom of each function chamber through a valve, and the bottom of each function chamber is connected with a chimney (9) through a valve respectively; when the equipment is used for treating abnormal working conditions, the high-concentration VOCs waste gas in the high-concentration VOCs waste gas inlet pipe (8) is directly introduced into the chimney (9) or is discharged into the chimney (9) through the emergency bypass pipeline (1).
2. An integrated RTO system incorporating heat exchange units according to claim 1 wherein said functional compartments include, in order, a purge compartment, a heating compartment, and a cooling compartment.
3. An integrated RTO system with embedded heat exchange unit according to claim 1 wherein the bottom of each functional chamber is connected to the inlet of the induced draft system (3) by a valve.
4. An integrated RTO system with embedded heat exchange unit according to claim 1 wherein the air inlet of the induced draft system (3) is further connected to the fresh air system (2) through a fresh air valve (c).
5. The integrated RTO system with embedded heat exchange equipment of claim 4, wherein after the RTO equipment (4) is started, the system is purged and heated by fresh air introduced by the fresh air system (2).
6. An integrated RTO system with embedded heat exchange units according to claim 1, characterized in that the induced draft system (3) is driven by a fan motor, which is controlled by a frequency converter.
7. The integrated RTO system with embedded heat exchange equipment of claim 1 wherein the embedded heat exchange equipment (5) comprises a water supply system, water wall tubes and a steam drum, the water wall tubes are arranged in the combustion chamber, during the reaction process, the water wall is continuously heated by high temperature flue gas above 850 ℃, the water supply is heated in the tubes to become steam, the steam enters the steam drum, and the steam enters the steam drum after being adjusted by a steam-water separator in the steam drum, and then high-grade steam is discharged for other production equipment.
8. The integrated RTO system with embedded heat exchange equipment of claim 1 wherein the high concentration VOCs exhaust gas in the high concentration VOCs exhaust gas inlet pipe (8) enters the RTO equipment (4) for thermal oxidation to produce CO after oxidative decomposition2And water, and the gas which becomes clean is discharged to a chimney (9) through a pipeline at the bottom of the functional chamber in the RTO equipment.
9. The integrated RTO system with embedded heat exchange device according to claim 1 is characterized in that a combustion chamber air volume control valve (6) is arranged below the embedded heat exchange device (5).
CN202110490356.8A 2021-05-06 2021-05-06 Integrated RTO system embedded in heat exchange equipment Pending CN113375171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110490356.8A CN113375171A (en) 2021-05-06 2021-05-06 Integrated RTO system embedded in heat exchange equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110490356.8A CN113375171A (en) 2021-05-06 2021-05-06 Integrated RTO system embedded in heat exchange equipment

Publications (1)

Publication Number Publication Date
CN113375171A true CN113375171A (en) 2021-09-10

Family

ID=77570727

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110490356.8A Pending CN113375171A (en) 2021-05-06 2021-05-06 Integrated RTO system embedded in heat exchange equipment

Country Status (1)

Country Link
CN (1) CN113375171A (en)

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