CN217464455U

CN217464455U - Integrated RTO system embedded in heat exchange equipment

Info

Publication number: CN217464455U
Application number: CN202120951073.4U
Authority: CN
Inventors: 何群伟; 李良城; 仲梅
Original assignee: Suzhou Krantz Environment Technology Co ltd
Current assignee: Suzhou Krantz Environment Technology Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-09-20
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses an integrated form RTO system of embedding indirect heating equipment, be equipped with the combustion chamber in the RTO equipment, the combustion chamber top is equipped with embedded indirect heating equipment between the relative adjacent function room, and high concentration VOCs waste gas intake pipe passes through the valve and connects the induced air system, and the induced air system passes through the valve with the bottom of each function room and communicates, and the bottom of each function room is respectively through valve connection chimney, its characterized in that, high concentration VOCs waste gas intake pipe still passes through the valve and is connected with emergent bypass pipeline, and the chimney is connected to the gas outlet of emergent bypass pipeline; 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 utility model relates to an embedding indirect heating equipment's integrated form RTO system belongs to exhaust-gas treatment technical field.

Background

Volatile organic compounds (vocs) 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 for 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 such as 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 thermal 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 thermal bypass belongs to clean gas, but the exhaust gas temperature is up to above 850 ℃, and the exhaust gas must be treated to meet the safe emission standard. Aiming at the design, the current 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 gas temperature after the heat exchange equipment is about 200 plus 300 ℃, the requirement of safe emission 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 large occupied space, and the problem that the technical process is not matched often exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: 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 utility model provides an integrated RTO system of embedding indirect heating equipment, be equipped with the combustion chamber in the RTO equipment, the combustion chamber top is equipped with ignition, the combustion chamber below is equipped with a plurality of function rooms of arranging in proper order, the combustion chamber top is equipped with embedded indirect heating equipment for between the adjacent function room, high concentration VOCs waste gas intake pipe passes through the valve and connects the induced air system, the induced air system passes through the valve with the bottom of each function room and communicates, the bottom of each function room passes through the valve respectively and connects the chimney, a serial communication port, high concentration VOCs waste gas intake pipe still passes through the valve and is connected with emergent bypass pipeline, the gas outlet of emergent bypass pipeline connects the chimney; 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 a 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 utility model provides an integrated form high concentration VOCs exhaust-gas treatment system with indirect heating equipment embedding RTO, this system can not only solve the overtemperature problem in ROT equipment top of handling high concentration VOCs, and the productization has been carried out to original process systems, the realization that integrates, avoided on the one hand in the design installation process RTO system not matching the scheduling problem with exhaust-heat boiler system's technical process, on the other hand is from the economic nature, the system of integrating has practiced thrift occupation of land space greatly, the external connection pipeline of having reduced complicacy arranges, moreover avoided the problem of the energy loss that traditional process equipment still exists after the heat transfer, the efficiency has realized optimizing the promotion to the integrated 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 beneficial effects of the utility model reside in 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 the integrated RTO system of the embedded heat exchange device provided by the present invention.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Examples

As shown in fig. 1, for the utility model provides a pair of embedding indirect heating equipment's integrated form RTO system, it includes RTO equipment 4, is equipped with the combustion chamber in the RTO equipment 4, and the combustion chamber top is equipped with ignition 7, and the combustion chamber below is equipped with three function room of arranging in proper order, is purge chamber, heating chamber, cooling chamber in proper order. 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 and the bottom of purge chamber, heating chamber, cooling chamber communicate through valve d, valve g, valve j respectively, and the bottom of purge chamber, heating chamber, cooling chamber passes through valve f, valve i, valve l respectively and connects 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 decomposition ₂ And 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

1. The integrated RTO system with the embedded heat exchange equipment is characterized by comprising the RTO equipment (4), wherein 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 between the top of the combustion chamber and the adjacent function chambers, a high-concentration VOCs waste gas inlet pipe (8) is connected with an induced draft system (3) through a valve, the induced draft system (3) is communicated with the bottom of each function chamber through a valve, the bottom of each function chamber is connected with a chimney (9) through a valve, the high-concentration VOCs waste gas inlet pipe (8) is also connected with an emergency bypass pipeline (1) through a valve, and the gas outlet of the emergency bypass pipeline (1) is connected with the chimney (9); 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 to 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. An integrated RTO system with embedded heat exchange units as claimed in claim 1 wherein the high concentration VOCs exhaust inlet gasHigh-concentration VOCs waste gas in the pipe (8) enters RTO equipment (4) for thermal oxidation, and CO is generated after oxidative decomposition ₂ And 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).