CN108916894A - A kind for the treatment of process and device of the organic exhaust gas containing VOCs - Google Patents
A kind for the treatment of process and device of the organic exhaust gas containing VOCs Download PDFInfo
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- CN108916894A CN108916894A CN201810781929.0A CN201810781929A CN108916894A CN 108916894 A CN108916894 A CN 108916894A CN 201810781929 A CN201810781929 A CN 201810781929A CN 108916894 A CN108916894 A CN 108916894A
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- exhaust gas
- air
- incinerator
- containing vocs
- organic exhaust
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Classifications
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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
- F23G7/061—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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses the treatment process and device of a kind of organic exhaust gas containing VOCs, which includes incinerator, waste heat boiler, air preheater, heat economizer, air-blaster, smoke induced draught fan and the chimney being linked in sequence.The technique includes：Air, organic exhaust gas containing VOCs are successively preheated using the high-temperature flue gas after burning, high temperature air after preheating is divided into two-way, entered all the way by burner, entered in furnace by incinerator all the way, guarantee the full combustion of exhaust gas, the exhaust gas after preheating is entered in furnace by the exhaust gas nozzle on incinerator to be burned.Burn the high-temperature flue gas generated, is cooled down by waste heat boiler, while by-product middle pressure steam, the flue gas after UTILIZATION OF VESIDUAL HEAT IN is discharged into chimney by smoke induced draught fan.The present invention maintains combustion chamber draft operation by smoke induced draught fan, guarantees the safety of burning process, reduces operating cost so that consumption is a small amount of or does not consume fuel by preheated air and exhaust gas simultaneously.
Description
Technical field
The invention belongs to technical field of energy saving and environmental protection, it is related to the technique of exhaust-gas treatment, more particularly to a kind of organic containing VOCs
The treatment process and device of exhaust gas.
Background technique
VOCs causes serious injury environment and the mankind, increasingly by the concern of national environmental protection.VOCs's
Treatment process mainly has absorption method and two kinds of destruction method.Absorption method mainly includes absorption, absorption, condensation and membrane separation technique.It is broken
Bad method is that organic matter is changed into the nothings such as carbon dioxide and water with heat, light, catalyst or microorganism by chemistry or biochemical reaction
The method of the harmless inorganic molecules compound of poison mainly includes high temperature incineration, catalysis burning, heat-accumulation combustion etc..Currently, active carbon
The recovery technologies such as absorption, diesel oil absorption are extremely difficult to environmental protection standard, therefore it is more extensive to destroy method application.
Organic exhaust gas is sent into incinerator by heating power burning disposal, and combustible component is made to burn, and the method treatment effeciency is high, but energy
Consumption is high, and operating cost is excessively high.
Catalysis burning is under the effect of the catalyst, organic exhaust gas to be made to be oxidized to carbon dioxide and water, and initiation temperature is low, section
The energy is saved, treatment effeciency is high, but catalyst is expensive, and easily poisoning.
Heat-accumulation combustion is that gas is heated when entering RTO alternately through ceramic heat-storing bed, obtains fume afterheat sufficiently
It utilizes.RTO structure is simple, compact, heat recovery rate is high.But equipment investment is big, and operating cost is excessively high.
Therefore, need to develop that a kind of investment is small, operating cost is low and the VOCs VOCs treatment work of system run all right
Skill meets national emission standard requirement.
Summary of the invention
The present invention provides the treatment process and device of a kind of organic exhaust gas containing VOCs to mention while guaranteeing discharge standard
High heat utilization efficiency, has saved fuel consumption, while reducing occupied area.
The present invention provides a kind for the treatment of process of organic exhaust gas containing VOCs, include the following steps：
Using the high-temperature flue gas after burning to air preheat, the high temperature air after preheating is divided into two-way, passes through burning all the way
Device enters, and is entered in furnace by incinerator all the way, guarantees the full combustion of exhaust gas.
The organic exhaust gas containing VOCs is preheated using high-temperature flue gas, the exhaust gas after preheating passes through the exhaust gas on incinerator
Nozzle, which enters in furnace, to be burned.
Exhaust gas and part of fuel gas burn in incinerator after air, preheating after preheating, and oxidation generates carbon dioxide
And water.Pass through the amount of filling into of Control for Oxygen Content air in flue gas.By incinerator fire box temperature, the amount of filling into of fuel gas is controlled.
Burn the high-temperature flue gas generated, is cooled down by waste heat boiler, while by-product middle pressure steam.
Smoke induced draught fan is set after heat economizer, maintains combustion chamber draft, guarantees the safety of burning process.
Flue gas after UTILIZATION OF VESIDUAL HEAT IN is discharged into chimney by smoke induced draught fan.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, the fire box temperature of the incinerator is
750~1200 DEG C, preferably 850~1100 DEG C.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, the air capacity is by flue gas after burning
Control for Oxygen Content guarantees that oxygen content is 2~6% in flue gas.It is preferred that 2~3.5%.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, the preheating of the organic exhaust gas containing VOCs
Temperature determines by waste gas component, generally 200~500 DEG C, preferably 250~350 DEG C.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, the air preheating temperature is generally
200~600 DEG C, preferably 300~500 DEG C.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, the flue gas exhaust gas temperature is generally
120~200 DEG C, preferably 150~180 DEG C.
As the improvement for the treatment process that present invention organic exhaust gas containing VOCs burns, VOCs in flue gas after the burning
Concentration is not higher than 50mg/Nm3 (on the basis of 3% butt of oxygen content).
For achieving the above object, the present invention also provides a kind of processing units of organic exhaust gas containing VOCs, including：It burns
Burn furnace, waste heat boiler, air preheater, heat economizer, air-blaster, smoke induced draught fan and chimney.
The air-blaster is connected by air line with air preheater, and air preheater passes through high temperature air pipe
Line is connected with incinerator burner air nozzle and incinerator body air nozzle, and the heat economizer passes through high-temp waste gas
Pipeline is connected with incinerator, and there are also burning line and compressed-air lines on the burning burner.The waste heat boiler
It is connected by flue with incinerator and air preheater, the heat economizer is drawn by flue and air preheater and flue gas
Blower is connected, and the chimney is connected by flue with smoke induced draught fan.
The improvement of processing unit as the organic exhaust gas of the invention containing VOCs, the incinerator use the vertical knot of tipburn
Structure.
The improvement of processing unit as the organic exhaust gas of the invention containing VOCs, the waste heat boiler are multitubular boiler.
The improvement of processing unit as the organic exhaust gas of the invention containing VOCs, the air preheater and heat economizer
Board-like or pipe heat exchanger can be used, arranged using vertical structure.
The improvement of processing unit as the organic exhaust gas of the invention containing VOCs, the smoke induced draught fan are frequency conversion fan,
Maintain the negative-pressure operation of incinerator.
Compared with prior art, the beneficial effects of the invention are as follows：
1) VOCs treatment containing VOCs of the invention technique can preheat air and waste gas, and controllable preheating temperature
Degree can consume a small amount of or even not consume fuel, greatly reduce operation energy consumption by the control to preheating temperature.
2) incinerator of the invention uses vertical tipburn structure, avoids combustor damage caused by fuel gas carrying liquid and combustion
Burn wild effect.
3) incinerator of the invention uses negative-pressure operation, ensure that the safety of incineration system.
4) present device is few, and process flow is simple, and equipment mostly uses vertical structure, and characteristics of compact layout has been greatly saved and has accounted for
Ground area, investment cost is low, simple and practical.
5) incineration temperature of the present invention is high, high treating effect, and purification efficiency is high, and exhaust gas containing VOCs is thoroughly decomposed into carbon dioxide
And water, VOCs discharge≤50mg/Nm3, it is much better than and is no more than 120mg/Nm3 as defined in standard GB/T 31570, without secondary dirt
Dye.
6) exhaust gas temperature of the present invention is suitable for fume afterheat being not only utilized to the greatest extent, but also eliminate white cigarette phenomenon, is eliminated
Visual pollution protects environment.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention, wherein：
Incinerator；2. waste heat boiler；3 air-blasters；4. air preheater；5. heat economizer；6. flue gas air inducing
Machine；7. chimney.
Specific embodiment
The present invention is further described in detail With reference to embodiment, and the embodiment provided is only for explaining
The bright present invention, the range being not intended to be limiting of the invention.
A kind for the treatment of process of organic exhaust gas containing VOCs of the invention includes the following steps：
1) exhaust gas is preheated using the high-temperature flue gas after burning, the exhaust gas after preheating passes through the flue gas leading on incinerator
Mouth, which enters in furnace, to be burned.
Wherein, control heating by the exhaust gases temperature is 200~450 DEG C.It avoids preheating temperature excessively high, carbon distribution is caused to generate.
2) using the high-temperature flue gas after burning to air preheat, the high temperature air after preheating is divided into two-way, passes through combustion all the way
Burner enters, and is entered in furnace by incinerator all the way, guarantees the full combustion of exhaust gas.
Wherein, air preheating temperature is 200~500 DEG C.Required air quantity is controlled by the oxygen content in flue gas after burning
System.
3) exhaust gas and part supplement fuel gas burn in incinerator after air, preheating after preheating, and oxidation generates two
Carbonoxide and water.
Wherein, the fire box temperature of incinerator is 850~1000 DEG C, guarantees the fully oxidized decomposition of exhaust gas.
Wherein, the dosage for supplementing fuel gas is controlled by incinerator fire box temperature.
Wherein, the Control for Oxygen Content after burning in flue gas not only guarantees the complete decomposition of harmful exhaust 2~3%, but also reduces
The consumption of fuel gas.
4) high-temperature flue gas that incinerator burning generates, is cooled down, while by-product middle pressure steam by waste heat boiler.
Wherein, waste heat boiler uses multitubular boiler form, and small investment, the service life is long, and safeguards in operational process simple.
5) after the high-temperature flue gas of preboiler outlet carries out UTILIZATION OF VESIDUAL HEAT IN cooling by air preheater, heat economizer,
Smoke induced draught fan is set after heat economizer.
Wherein, the effect of smoke induced draught fan is to maintain the negative pressure of burner hearth in incinerator operational process, guarantees burning process
Safety.
Flue gas after UTILIZATION OF VESIDUAL HEAT IN is discharged into chimney by smoke induced draught fan.
Wherein, exhaust gas temperature is 150~160 DEG C, eliminates white cigarette phenomenon, eliminates visual pollution, protects environment.
Wherein, the concentration for discharging contained VOCs in flue gas is not higher than 50mg/Nm3 (on the basis of 3% butt of oxygen content).
Based on a kind of above-described treatment process of the organic exhaust gas containing VOCs, the processing of the organic exhaust gas containing VOCs is filled
Set including：Incinerator 1, waste heat boiler 2, air-blaster 3, air preheater 4, heat economizer 5, smoke induced draught fan 6 and cigarette
Chimney 7.
Wherein, the air-blaster 3 is connected by air line with air preheater 4, and air preheater 4 passes through height
Warm air pipeline is connected with 1 burner air nozzle of incinerator and 1 furnace body air nozzle of incinerator, the heat economizer 5
It is connected by high-temp waste gas pipeline with incinerator 1, the waste heat boiler 2 passes through flue and incinerator 1 and air preheater 4
It is connected, the heat economizer 5 is connected by flue with air preheater 1 and smoke induced draught fan 6, and the chimney 7 passes through
Flue is connected with smoke induced draught fan 6.
In addition, 1 burner of incinerator is also connected with fuelgas pipeline and compressed-air line.The air preheater
4 and heat economizer 5 use vertical structure.
The preferable specific embodiment of the above, only the application, but the protection scope of the application is not limited thereto,
Anyone skilled in the art within the technical scope of the present application, the variations and alternatives that can be readily occurred in,
Should all it cover within the scope of protection of this application.
Claims (11)
1. a kind for the treatment of process of organic exhaust gas containing VOCs, which is characterized in that the treatment process includes：
1) using the high-temperature flue gas after burning to air preheat, the high temperature air after preheating is divided into two-way, passes through burner all the way
Into being entered in furnace by incinerator all the way, guarantee the full combustion of exhaust gas.
2) organic exhaust gas containing VOCs is preheated using high-temperature flue gas, the exhaust gas after preheating passes through the flue gas leading on incinerator
Mouth, which enters in furnace, to be burned.
3) exhaust gas and part of fuel gas burn in incinerator after air, preheating after preheating, oxidation generate carbon dioxide and
Water.Pass through the amount of filling into of Control for Oxygen Content air in flue gas.By incinerator fire box temperature, the amount of filling into of fuel gas is controlled.
4) high-temperature flue gas that burning generates, is cooled down, while by-product middle pressure steam by waste heat boiler.
5) smoke induced draught fan is set after heat economizer, maintains combustion chamber draft, guarantees the safety of burning process.
6) flue gas after UTILIZATION OF VESIDUAL HEAT IN is discharged into chimney by smoke induced draught fan.
2. a kind for the treatment of process of organic exhaust gas containing VOCs according to claim 1, which is characterized in that the incinerator
Fire box temperature is 750~1200 DEG C, preferably 850~1100 DEG C.
3. a kind for the treatment of process of organic exhaust gas containing VOCs according to claim 1, which is characterized in that the air capacity by
Control for Oxygen Content in flue gas after burning guarantees that oxygen content is 2~6% in flue gas.It is preferred that 2~3.5%.
4. a kind for the treatment of process of organic exhaust gas containing VOCs according to claim 1, which is characterized in that described to have containing VOCs
The preheating temperature of machine exhaust gas, generally 200~500 DEG C, preferably 250~350 DEG C.
5. a kind for the treatment of process of organic exhaust gas containing VOCs according to claim 1, which is characterized in that the air preheat
Temperature is generally 200~600 DEG C, preferably 300~500 DEG C.
6. a kind for the treatment of process of organic exhaust gas containing VOCs according to claim 1, which is characterized in that cigarette after the burning
The concentration of VOCs is not higher than 50mg/Nm3 in gas (on the basis of 3% butt of oxygen content).
7. a kind of processing unit of organic exhaust gas containing VOCs, which is characterized in that the organic waste gas treatment device containing VOCs includes：
Incinerator, waste heat boiler, air preheater, heat economizer, air-blaster, smoke induced draught fan and chimney.
The air-blaster is connected by air line with air preheater, air preheater by high temperature air pipeline with
Incinerator burner air nozzle is connected with incinerator body air nozzle, and the heat economizer passes through high-temp waste gas pipeline
It is connected with incinerator.There are also burning line and compressed-air lines on the burning burner, and interior incinerator is negative pressure.Institute
It states waste heat boiler and is connected by flue with incinerator and air preheater.The heat economizer passes through flue and air preheat
Device is connected with smoke induced draught fan, and the chimney is connected by flue with smoke induced draught fan.
8. the processing unit of a kind of organic exhaust gas containing VOCs according to claim 7, which is characterized in that the incinerator uses
Tipburn vertical structure, and run for negative pressure.
9. the processing unit of a kind of organic exhaust gas containing VOCs according to claim 7, which is characterized in that the waste heat boiler is
Multitubular boiler.
10. the processing unit of a kind of organic exhaust gas containing VOCs according to claim 7, which is characterized in that the air preheat
Board-like or pipe heat exchanger can be used in device and heat economizer, is arranged using vertical structure.
11. the processing unit of a kind of organic exhaust gas containing VOCs according to claim 7, which is characterized in that the flue gas air inducing
Machine is frequency conversion fan, maintains the negative-pressure operation of incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810781929.0A CN108916894A (en) | 2018-07-17 | 2018-07-17 | A kind for the treatment of process and device of the organic exhaust gas containing VOCs |
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| CN201810781929.0A CN108916894A (en) | 2018-07-17 | 2018-07-17 | A kind for the treatment of process and device of the organic exhaust gas containing VOCs |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611871A (en) * | 2018-12-05 | 2019-04-12 | 陆炯 | A kind of exhaust treatment system and its purification process technique |
| CN109876636A (en) * | 2019-04-24 | 2019-06-14 | 福建鼎信科技有限公司 | Phenol pond emission-control equipment |
| CN110230820A (en) * | 2019-05-30 | 2019-09-13 | 万泰（苏州）环境科技有限公司 | A kind of residual neat recovering system of VOC burned waste gas |
| CN111720838A (en) * | 2020-06-10 | 2020-09-29 | 山东同智创新能源科技股份有限公司 | Flue gas waste heat cascade utilization system capable of being applied to raw coke oven gas recycling |
| CN111780140A (en) * | 2020-07-30 | 2020-10-16 | 南京大学环境规划设计研究院股份公司 | Heat accumulating type catalytic combustion device for VOCs treatment |
| CN113339820A (en) * | 2021-06-10 | 2021-09-03 | 新疆广汇新能源有限公司 | Method and device for treating VOCs in low-temperature methanol washing tail gas |
| CN113898961A (en) * | 2021-11-15 | 2022-01-07 | 广德龙泰电子科技有限公司 | Preheating and ventilating device of waste gas incinerator |
| EP4180716A1 (en) * | 2021-11-11 | 2023-05-17 | SIS GmbH | Mobile incinerator for noxious gas, method and use |
| CN116576682A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Energy-saving comprehensive treatment system and process for exhaust gas discharged from toughened glass production |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611871A (en) * | 2018-12-05 | 2019-04-12 | 陆炯 | A kind of exhaust treatment system and its purification process technique |
| CN109611871B (en) * | 2018-12-05 | 2021-06-25 | 太仓市律点信息技术有限公司 | Waste gas treatment system and purification treatment process thereof |
| CN109876636A (en) * | 2019-04-24 | 2019-06-14 | 福建鼎信科技有限公司 | Phenol pond emission-control equipment |
| CN110230820A (en) * | 2019-05-30 | 2019-09-13 | 万泰（苏州）环境科技有限公司 | A kind of residual neat recovering system of VOC burned waste gas |
| CN111720838A (en) * | 2020-06-10 | 2020-09-29 | 山东同智创新能源科技股份有限公司 | Flue gas waste heat cascade utilization system capable of being applied to raw coke oven gas recycling |
| CN111780140A (en) * | 2020-07-30 | 2020-10-16 | 南京大学环境规划设计研究院股份公司 | Heat accumulating type catalytic combustion device for VOCs treatment |
| CN113339820A (en) * | 2021-06-10 | 2021-09-03 | 新疆广汇新能源有限公司 | Method and device for treating VOCs in low-temperature methanol washing tail gas |
| EP4180716A1 (en) * | 2021-11-11 | 2023-05-17 | SIS GmbH | Mobile incinerator for noxious gas, method and use |
| CN113898961A (en) * | 2021-11-15 | 2022-01-07 | 广德龙泰电子科技有限公司 | Preheating and ventilating device of waste gas incinerator |
| CN116576682A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Energy-saving comprehensive treatment system and process for exhaust gas discharged from toughened glass production |
| CN116576682B (en) * | 2023-05-15 | 2024-02-02 | 广东维正环保机电工程有限公司 | Energy-saving comprehensive treatment system and process for exhaust gas discharged from toughened glass production |
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Application publication date: 20181130 |