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CN105879574B - A kind of VOCs concentration load buffer regulating device - Google Patents

A kind of VOCs concentration load buffer regulating device Download PDF

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Publication number
CN105879574B
CN105879574B CN201610322291.5A CN201610322291A CN105879574B CN 105879574 B CN105879574 B CN 105879574B CN 201610322291 A CN201610322291 A CN 201610322291A CN 105879574 B CN105879574 B CN 105879574B
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vocs
tank body
regulating device
valve
rotary
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CN201610322291.5A
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CN105879574A (en
Inventor
李大伟
李爱民
龙超
戴建军
周庆
贾李娟
刘笑寒
何宏磊
李浩阳
李志豪
李锦阳
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Jiangsu Guochuang Enviro-Protection Technology Co Ltd
Nanjing University
Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
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Jiangsu Guochuang Enviro-Protection Technology Co Ltd
Nanjing University
Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40003—Methods relating to valve switching
    • B01D2259/40005—Methods relating to valve switching using rotary valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)

Abstract

A kind of VOCs concentration load buffer regulating device, buffer regulating device is set before being included in VOCs purification apparatus, the buffer regulating device is fixed bed one-way fashion, fixed bed reversible, rotary hearth, adsorbent material is filled in buffer regulating device, the buffering that adsorbent material carries out " peak clipping Pinggu " to VOCs concentration load at normal temperatures and pressures is adjusted.VOCs concentration load buffer regulating device structure of the invention is simple and convenient to operate, and be ensure that the stable operation of follow-up operation equipment, is improved the treatment effeciency and operational safety of VOCs treatment process.

Description

A kind of VOCs concentration load buffer regulating device
Technical field
The present invention relates to organic exhaust gas (VOCs) process fields, and in particular to a kind of VOCs concentration load buffer adjusting dress It sets.
Background technique
The fast development of modern industry causes air pollution problems inherent to become increasingly conspicuous, and seriously endangers human health and ecological ring Border.In recent years, China's Fine Chemical is quickly grown, and has become pillar industry in some areas, and resulting volatilization The pollution problem of property organic gas (Volatile Organic Compounds, VOCs) also becomes whole society's focus of attention.
The discharge of fine chemistry industry exhaust gas and the operating condition of process units are closely related, have complicated component, total release Greatly, the features such as emission equivalent is poor, exhaust gas concentration fluctuation is big.Most VOCs treatment technologies all suffer from engineer application One difficult point, i.e., it is big due to the fluctuating range of exhaust gas intermittent discharge, concentration the features such as, the scale for the treatment of facility is not easy precisely to set Meter, treatment effeciency, which is difficult to obtain, continues guarantee, and the stability of device is also affected.The fluctuating change of this exhaust gas concentration of emission Challenge is proposed to the design of processing equipment: if designing by average emission concentration, will lead to treatment effeciency reduction in peak period； Cost can be greatly increased if by peak concentration design.
By taking incineration method as an example, heat accumulating type oxidation furnace (RTO) because burner hearth high temperature to organic principle destroy ratio more thoroughly, and to give up The selectivity of gas ingredient is not high, has certain advantage in numerous exhaust gas treatment technologies.But RTO system structure is relatively fixed, Processing capacity has its specific scope of application, when designing incinerator, needs accurate calculation processing air quantity and concentration, best to obtain Treatment effect.And in actual production, the dynamic change of concentration of emission is brought to the safety of exhaust treatment system and treatment effeciency Difficulty.If concentration of emission exceeds the load-bearing capacity of RTO, it is not only possible to discharge beyond standards, and can bring and fire security risk.If Concentration of emission is too low, then will increase the consumption of auxiliary fuel, and economy is had a greatly reduced quality.
The present invention targetedly solves the problems, such as this.
Summary of the invention
The technical problem to be solved by the present invention is to stable for purification device in existing industrial waste gas Treatment process The problem that property is poor, security risk is big, processing cost is high, treatment effeciency is low, provides a kind of VOCs concentration load buffer regulating device. Device stability is high, security risk is small, at low cost, treatment effeciency is high for having in industry VOCs master gas for the device Advantage.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of VOCs concentration load buffer regulating device, setting is filled with absorption before being included in VOCs purifying processing device The buffer regulating device of material, which is fixed bed one-way fashion, fixed bed reversible, rotary hearth, wherein inhaling It is 50-500 mg/g that enclosure material, which has the dynamic adsorption capacity of reversible adsorption desorption, and when VOCs concentration is higher, adsorbent material is inhaled Attached organic molecule, and be then desorbed when VOCs concentration is lower, in adsorbent material, adsorbed organic substance is discharged, is realized The buffering for carrying out " peak clipping Pinggu " to VOCs concentration load is adjusted；The buffer regulating device is run at normal temperatures and pressures.
Preferably, the adsorbent material includes but is not limited to fluoropolymer resin, active carbon, activated carbon fiber, hydrophobic zeolite Molecular sieve, further preferably fluoropolymer resin.
Preferably, the fluoropolymer resin is selected from one of macroreticular resin and hypercrosslinked polymeric resin or mixture.
Preferably, the VOCs purifying processing device be RTO, low-temperature plasma, photooxidation, in biological purification plant It is a kind of.Further preferably RTO.
Preferably, the fixed bed one-way fashion device includes admission line, tank body, adsorbent material, outlet pipe.
Fixed bed one-way fashion device is in absorption or detachment status depends on inlet gas concentration compared between adsorbance, when Saturated extent of adsorption corresponding to inlet gas concentration is higher than the real-time adsorbance of adsorbent material in adsorption isotherm, then adsorption-buffering device In adsorbed state, it is on the contrary then be in detachment status.
Preferably, the fixed bed reversible device includes admission line, two-way switching valve door, tank body, adsorbent material, goes out Feed channel.Preferably, VOCs exhaust gas, by two way valve, first enters tank body from left end (end A) after admission line importing, to Right end (end B) is mobile；When adsorbing to a certain extent, switch Steering valve, so that organic exhaust gas enters tank from right end (end B) Body, gas right end (end B) are blown by materials purification at clean gas, and to the left end (end A) for having adsorbed VOCs after entering, will be left The VOCs desorbing molecules of end (end A) absorption release.Whole process includes the adsorption/desorption process of linkage, can penetrate exhaust gas Control avoids exhaust gas uncontrolled discharge in adsorption tanks.
Preferably, the tank body of the fixed bed reversible device may include single tank or double-pot type.
Preferably, rotary hearth device is one of tank body rotates and valve is rotary, and wherein tank body rotation refers to tank body It is rotating, is being not provided with changeover valve, connected between tank body and pipeline by sealing ring, sealing ring is with tank body synchronism switching；Valve rotation Rotatable finger tank body is motionless, and the continuous switching of gas is realized using changeover valve.
Preferably, valve is on tank body sealing ring position rotatably by adding a changeover valve, by sealing ring with The synchronism switching of changeover valve realizes the variation of tank body adsorption/desorption exhaust gas.The setting of changeover valve can refer to rotary RTO dress Set the set-up mode of middle changeover valve.
Preferably, tank body is divided into 8-12 fan-shaped block structure and forms the adsorption chamber of respective numbers.
By taking eight Room rotating vessel adsorbent equipments as an example, absorption tank body is divided into 8 adsorption chambers, wherein there are two adsorption chambers The Dynamic Closed in rotary course prevents exhaust gas from two neighboring adsorption chamber being avoided wind direction contradiction occur in the same sector.Gas Body enters from Room 6,7,8 first, and through adsorption cleaning, gas enters back into Room 2,3,4 by the closed cavity of the tank body other end and is discharged, 1st, the sealing of Room the 5th at this time；After a certain period of time, gas is switched to Room 7,8,1 into Room 3,4,5 go out, the 2nd, the sealing of Room the 6th.8 The such cycle operation of adsorption chamber.By band, there are two the sealing rings of adsorption chamber sealing cover to connect between tank body and VOCs exhaust piping It connects.
Using after above-mentioned technical proposal the invention has the benefit that
1, the present invention is using the adsorption material having under normal temperature and pressure compared with high dynamic adsorption capacity and very fast adsorption/desorption rate Material is seated in regulating device, and the buffering for carrying out " peak clipping Pinggu " to VOCs concentration load is adjusted, to subsequent when reducing high concentration The impact of clean unit, and in low concentration, stable air-intake load is provided for subsequent cell, ensure that follow-up operation equipment Stable operation realizes the continuous operation of clean unit, improves treatment effeciency and operational safety.
2, the VOCs concentration load buffer regulating device structure that the present invention is arranged is simple, easy to operate.
3, under the design of revolving bed, exhaust gas adsorption cleaning in leading portion adsorbent bed, clean gas by closed cavity into Enter back segment adsorbent bed and desorption release is carried out to the VOCs wherein adsorbed；Revolving bed device can get dense than fixed bed reversible device Spend more stable discharge gas.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 is the device of the invention layout drawing.
Fig. 2 is fixed bed one-way fashion buffer regulating device.
Fig. 3 is single tank fixed bed reversible buffer regulating device.
Fig. 4 is the rotary buffer regulating device schematic diagram of 8 sector tank bodies.
Fig. 5 is the 8 rotary buffer regulating devices of sector valve.
Specific embodiment
The present invention will now be described in detail with reference to examples, and the examples are only preferred embodiments of the present invention, It is not limitation of the invention.
Embodiment 1
Process unit used is as shown in Fig. 1, and wherein buffer regulating device is that the buffering of fixed bed one-way fashion shown in Fig. 2 is adjusted Device, purifying processing device RTO, adsorbent material are active carbon, and the dynamic adsorption capacity of reversible adsorption desorption is 100mg/ G, buffer regulating device are run in normal temperature and pressure, and VOCs concentration is in 500-10000mg/m in VOCs exhaust gas3Fluctuation in range, should Concentration of the VOCs exhaust gas after buffering adjusts processing unit is 3000-7000mg/m3, stable operation 48 hours of RTO do not occur Abnormal conditions, RTO discharge gas meet environmental requirement.
Other than casting out buffer regulating device, other operations are identical as aforesaid operations condition, go out after RTO is run 10 hours Now abnormal, RTO discharge gas does not meet environmental requirement.
Embodiment 2
Process unit used is as shown in Fig. 1, and wherein buffer regulating device is the buffering of list tank fixed bed reversible shown in Fig. 3 Regulating device, purifying processing device RTO, adsorbent material are macroreticular resin, and the dynamic adsorption capacity of reversible adsorption desorption is 135mg/g, buffer regulating device are run in normal temperature and pressure, and VOCs concentration is in 500-10000mg/m in VOCs exhaust gas3Wave in range Dynamic, VOCs exhaust gas, by two way valve, first enters tank body from the end A after admission line importing, mobile to the end B；It is being adsorbed onto one When determining degree, switch Steering valve, so that organic exhaust gas enters tank body from the end B, it is net that the gas end right end B is adsorbed material after entering It is melted into clean gas, and is blown to the end A for having adsorbed VOCs, the VOCs desorbing molecules that the end A is adsorbed are released.
Concentration of the VOCs exhaust gas after buffering adjusts processing unit is 4000-6000mg/m3, the stable operation 80 of RTO Hour does not occur abnormal conditions, and RTO discharge gas meets environmental requirement.
Other than casting out buffer regulating device, other operations are identical as aforesaid operations condition, go out after RTO is run 10 hours Now abnormal, RTO discharge gas does not meet environmental requirement.
Embodiment 3
Process unit used is as shown in Fig. 1, and wherein buffer regulating device is that 8 sector valves shown in Fig. 4 rotatably buffer Regulating device, purifying processing device RTO, adsorbent material are hypercrosslinked polymeric resin, and the Dynamic Adsorption of reversible adsorption desorption holds Amount is 150mg/g, and buffer regulating device is run in normal temperature and pressure, and VOCs concentration is in 500-10000mg/m in VOCs exhaust gas3Range Interior fluctuation, VOCs exhaust gas enters from Room 6,7,8 first, through adsorption cleaning, gas by the closed cavity of the tank body other end again into Enter the discharge of Room 2,3,4, at this time the 1st, the sealing of Room the 5th；After a certain period of time, gas be switched to Room 7,8,1 into, Room 3,4,5 go out, the 2nd, The sealing of Room 6th.8 such cycle operations of adsorption chamber.By band, there are two adsorption chambers to seal between tank body and VOCs exhaust piping The sealing ring of lid connects.Concentration of the VOCs exhaust gas after buffering adjusts processing unit is 4500-5500mg/m3, the stabilization of RTO Operation does not occur abnormal conditions for 96 hours, and RTO discharge gas meets environmental requirement.
Other than casting out buffer regulating device, other operations are identical as aforesaid operations condition, go out after RTO is run 10 hours Now abnormal, RTO discharge gas does not meet environmental requirement.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations Art scheme should all be fallen within the scope and spirit of the invention.

Claims (4)

1.一种VOCs浓度负荷缓冲调节装置，包括在VOCs 净化处理装置前设置填装有吸附材料的缓冲调节装置，所述缓冲调节装置为旋转床式，其中旋转床式装置为罐体旋转和阀门旋转式中的一种，其中罐体旋转指罐体在转动，不设置旋转阀门，罐体与管路之间靠密封圈连接，密封圈随罐体同步切换；阀门旋转式指罐体不动，利用旋转阀门实现气体的连续切换；所述吸附材料为聚合物树脂，其具有可逆吸附脱附的动态吸附容量为50-500 mg/g，当VOCs浓度较高时，吸附材料吸附有机分子，而当VOCs浓度较低时，吸附材料内则发生脱附，释放所吸附的有机物质，实现对VOCs浓度负荷进行“削峰平谷”的缓冲调节；所述缓冲调节装置在常温常压下运行。1. A VOCs concentration load buffer adjustment device, comprising a buffer adjustment device filled with adsorption material before the VOCs purification treatment device, the buffer adjustment device is a rotary bed type, wherein the rotary bed type device is a tank body rotation and a valve One of the rotary types, where the tank body rotation means that the tank body is rotating, no rotary valve is set, the tank body and the pipeline are connected by a sealing ring, and the sealing ring is switched synchronously with the tank body; the valve rotation type means that the tank body does not move , using a rotary valve to realize continuous switching of gases; the adsorbent material is a polymer resin, which has a reversible adsorption and desorption dynamic adsorption capacity of 50-500 mg/g, when the concentration of VOCs is high, the adsorbent material adsorbs organic molecules, When the VOCs concentration is low, desorption occurs in the adsorption material, and the adsorbed organic substances are released, so as to realize the buffer adjustment of "peak-cutting and flat-valley" for the VOCs concentration load; the buffer adjustment device operates at normal temperature and pressure. 2.根据权利要求1所述的VOCs浓度负荷缓冲调节装置，其特征在于阀门旋转式是通过在罐体与进出气管道间增设一个旋转阀门，通过旋转阀门的切换，实现罐体吸附脱附废气的连续变化。2. The VOCs concentration load buffer adjustment device according to claim 1, characterized in that the valve rotary type is to add a rotary valve between the tank body and the gas inlet and outlet pipelines, and through the switching of the rotary valve, the tank body can absorb and desorb waste gas continuous change. 3.根据权利要求1所述的VOCs浓度负荷缓冲调节装置，其特征在于吸附材料为大孔树脂和超高交联树脂中的一种或两者的混合物。3. The VOCs concentration load buffering and adjusting device according to claim 1, characterized in that the adsorption material is one or a mixture of macroporous resin and ultra-high cross-linked resin. 4.根据权利要求1所述的VOCs浓度负荷缓冲调节装置，其特征在于所述VOCs 净化处理装置为RTO、低温等离子、光氧化、生物净化装置中的一种。4. The VOCs concentration load buffer adjustment device according to claim 1, characterized in that the VOCs purification treatment device is one of RTO, low temperature plasma, photooxidation, and biological purification devices.
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CN106823776A (en) * 2017-03-03 2017-06-13 北京工业大学 A kind of biological drop of the improvement chemical fibre stench of anti-clogging considers apparatus and method
CN106693642B (en) * 2017-03-09 2022-12-06 上海兰宝环保科技有限公司 Organic waste gas treatment system under waste gas concentration fluctuation working condition
CN110090528A (en) * 2019-06-04 2019-08-06 江苏大信环境科技有限公司 De- recyclable device is inhaled in rotation
CN118594185A (en) * 2024-06-26 2024-09-06 上海市环境科学研究院 A mobile skid-mounted treatment device and control system for organic waste gas

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US20060153747A1 (en) * 2005-01-13 2006-07-13 Carrier Corporation Gas treatment adsorption-oxidation system
JP5779310B2 (en) * 2009-02-27 2015-09-16 日本リファイン株式会社 Method and apparatus for recovering volatile organic compounds
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