CN110075707A - A kind of plastics oil smoke VOC waste gas treatment device and treatment process - Google Patents
A kind of plastics oil smoke VOC waste gas treatment device and treatment process Download PDFInfo
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- 229920003023 plastic Polymers 0.000 title claims abstract description 24
- 239000004033 plastic Substances 0.000 title claims abstract description 24
- 239000002912 waste gas Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 9
- 239000000779 smoke Substances 0.000 title claims abstract 17
- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000001179 sorption measurement Methods 0.000 claims abstract description 36
- 230000008676 import Effects 0.000 claims abstract 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract 8
- 239000003546 flue gas Substances 0.000 claims abstract 8
- 230000003068 static effect Effects 0.000 claims abstract 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 36
- 230000005684 electric field Effects 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000003463 adsorbent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims 12
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 239000003610 charcoal Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000012716 precipitator Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000003517 fume Substances 0.000 description 28
- 230000001699 photocatalysis Effects 0.000 description 10
- 230000003197 catalytic effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000006233 lamp black Substances 0.000 description 5
- 239000004071 soot Substances 0.000 description 5
- 238000004332 deodorization Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000013527 degreasing agent Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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Abstract
Description
技术领域technical field
本发明属于废气治理技术领域，具体是一种塑料油烟VOC废气治理装置及处理工艺。The invention belongs to the technical field of waste gas treatment, in particular to a plastic lampblack VOC waste gas treatment device and a treatment process.
背景技术Background technique
由于塑胶造粒车间生产废气成分复杂，波动大，异味强度高，现市场上去除废气技术主要有吸收法、吸附法、离子除臭法、催化氧化法、微生物降解法、掩敝法、臭氧法等。目前塑料加工行业治理废气的技术主要是通过蓄热式催化氧化设备分解，使用此技术存在设备经常被堵塞，不能正常运行，废气排放不能达标。且设备需要经常大清理、工作量大，蓄热式催化氧化分解技术运行费用较高。目前对于塑胶造粒车间所产生的异味废气，主要是通过水喷淋洗涤工艺与活性炭工艺对异味废气进行处理，但这种工艺处理效果不明显，导致废气浓度排放增大，影响治理效果，严重的影响废气排放烟囱的周边环境与周边居民的身体健康。Due to the complex composition of the waste gas produced in the plastic granulation workshop, large fluctuations, and high odor intensity, the existing technologies for removing waste gas on the market mainly include absorption method, adsorption method, ion deodorization method, catalytic oxidation method, microbial degradation method, masking method, and ozone method. Wait. At present, the waste gas treatment technology in the plastics processing industry is mainly decomposed by regenerative catalytic oxidation equipment. Using this technology, the equipment is often blocked, cannot operate normally, and the exhaust gas emission cannot meet the standards. Moreover, the equipment needs to be cleaned frequently and the workload is heavy, and the operation cost of the regenerative catalytic oxidation decomposition technology is relatively high. At present, for the odorous exhaust gas generated in the plastic granulation workshop, the odorous exhaust gas is mainly treated by water spray washing process and activated carbon process, but the treatment effect of this process is not obvious, which leads to the increase of exhaust gas concentration and affects the treatment effect, seriously The impact on the surrounding environment of the exhaust gas discharge chimney and the health of the surrounding residents.
以上背景技术内容的公开仅用于辅助理解本发明的发明构思及技术方案，其并不必然属于本专利申请的现有技术，在没有明确的证据表明上述内容在本专利申请的申请日已经公开的情况下，上述背景技术不应当用于评价本申请的新颖性和创造性。The disclosure of the above background technical content is only used to assist in understanding the inventive concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of this patent application. There is no clear evidence that the above content has been disclosed on the filing date of this patent application. Under the circumstances, the above background technology should not be used to evaluate the novelty and inventiveness of this application.
发明内容SUMMARY OF THE INVENTION
本发明针对蓄热式催化氧化分解法处理塑料油烟废气存在的问题，提供一种结构简单、操作简单、运行成本低、能够高效的处理塑料油烟，消除因油烟带来的设备故障问题，实现装置长期稳定运行，油烟VOC废气排放达标的治理装置及处理工艺。The present invention aims at the problems existing in the treatment of plastic fumes and waste gas by the regenerative catalytic oxidation decomposition method, and provides a device with simple structure, simple operation, low operating cost, and high efficiency for processing plastic fumes, eliminating the problem of equipment failure caused by the fumes, and realizing the device Long-term stable operation, the control device and treatment process for oily fume VOC exhaust emissions to meet standards.
为了实现以上目的，本发明采用的技术方案如下：In order to achieve the above object, the technical scheme adopted in the present invention is as follows:
一种塑料油烟VOC废气治理装置，包括旋风分离器、高压静电除油烟器、预处理器、光催化净化器、冷却器、风机和吸附罐；所述高压静电除油烟器进口与旋风分离器出口连接，高压静电除油烟器出口与预处理器进口连接，预处理器出口与光催化净化器进口连接，光催化净化器出口与冷却器进口连接，冷却器的出口与风机进口连接，所述风机出口与吸附罐进口相连。A plastic oil fume VOC waste gas treatment device, including a cyclone separator, a high-voltage electrostatic oil fume remover, a preprocessor, a photocatalytic purifier, a cooler, a fan, and an adsorption tank; the inlet of the high-voltage electrostatic oil remover and the outlet of the cyclone separator Connection, the outlet of the high-voltage electrostatic oil fume remover is connected to the inlet of the preprocessor, the outlet of the preprocessor is connected to the inlet of the photocatalytic purifier, the outlet of the photocatalytic purifier is connected to the inlet of the cooler, the outlet of the cooler is connected to the inlet of the fan, and the fan The outlet is connected to the inlet of the adsorption tank.
优选的，所述吸附罐内部设有活性炭吸附层，吸附罐内还设有蒸汽发布器，所述蒸汽发布器通过管道与外部蒸汽连接。吸附罐内部设的吸附剂为活性炭吸附层不仅能够对VOC废气净化处理，还能起到除臭的功效，且活性炭能够实现再生利用，降低了生产成本。吸附罐内设有蒸汽发布器，通过高温加热实现活性炭的再生吸附功能。Preferably, an activated carbon adsorption layer is provided inside the adsorption tank, and a steam distributor is also provided in the adsorption tank, and the steam distributor is connected to external steam through a pipeline. The adsorbent inside the adsorption tank is an activated carbon adsorption layer, which can not only purify VOC waste gas, but also deodorize, and the activated carbon can be recycled, reducing production costs. There is a steam distributor in the adsorption tank, which realizes the regenerative adsorption function of activated carbon through high temperature heating.
优选的，所述预处理器内部设有活性炭过滤层，能够对油烟进行再次过滤防止堵塞光催化净化器且能够对VOC废气进行初步净化除臭。Preferably, an activated carbon filter layer is provided inside the pre-processor, which can re-filter the fume to prevent clogging of the photocatalytic purifier and can perform preliminary purification and deodorization of VOC exhaust gas.
优选的，根据废气的油烟及VOC废气量决定，所述高压静电除油烟器、光催化净化器和吸附罐设有多组。Preferably, there are multiple sets of high-voltage electrostatic oil fume removers, photocatalytic purifiers, and adsorption tanks, determined according to the amount of soot and VOC exhaust gas in the exhaust gas.
本发明所述塑料油烟VOC废气治理装置的处理工艺，包括如下步骤：The treatment process of the plastic lampblack VOC exhaust gas treatment device of the present invention comprises the following steps:
(1)塑料生产产生的油烟VOC废气进入旋风分离器后，废气中的部分油类和颗粒在分离器的离心作用下下沉，剩下的废气向上进入高压静电除油烟器，油烟在高压电场中带电，带电粒子在电场中会受到电场力的作用，大部分油烟被电场阳极吸附；(1) After the VOC exhaust gas from plastic production enters the cyclone separator, part of the oil and particles in the exhaust gas sink under the centrifugal action of the separator, and the remaining exhaust gas enters the high-voltage electrostatic degreaser upwards, and the oil fume in the high-voltage electric field Medium charged, the charged particles will be affected by the electric field force in the electric field, and most of the oil fume will be absorbed by the anode of the electric field;
(2)经过高压静电除油烟器处理后的废气进入预处理器再次过滤及初步过滤；(2) The exhaust gas processed by the high-voltage electrostatic oil fume remover enters the pre-processor for re-filtering and preliminary filtering;
(3)进行预处理后的VOC废气进入光催化净化器，通过净化器的紫外光和产生的氧化离子破坏废气中的有机物成分，分解成CO2、H2O无毒无害物质，催化氧化后的气体进入冷却器冷却；(3) The VOC exhaust gas after pretreatment enters the photocatalytic purifier, and the organic components in the exhaust gas are destroyed by the ultraviolet light of the purifier and the oxidized ions, and decomposed into non-toxic and harmless substances such as CO 2 and H 2 O, which are catalyzed and oxidized After the gas enters the cooler for cooling;
(4)再将冷却后的气体用风机输送至装有活性炭的吸附罐进行吸附，活性炭通入蒸汽进行高温再生，废气达标后即可从吸附罐的排气管排放。(4) The cooled gas is transported to the adsorption tank equipped with activated carbon by a fan for adsorption, and the activated carbon is fed with steam for high-temperature regeneration. After the exhaust gas reaches the standard, it can be discharged from the exhaust pipe of the adsorption tank.
与现有技术相比，本发明的优点及有益效果为：Compared with prior art, advantage and beneficial effect of the present invention are:
本发明提供的塑料油烟废气治理装置经过旋风分离器离心分离后再进入高压静电除油烟器处理，处理后再进入预处理器进行再次过滤，过滤后的VOC废气经过光催化净化器催化氧化分解成CO2、H2O无毒无害物质，最后再进入活性炭吸附罐进行除臭和净化，通入蒸汽高温处理实现活性炭的再生吸附。该装置结构简单、操作简单、运行成本低，能够高效的处理塑料油烟废气，不将油烟带入后续处理设备，消除因油烟带来的设备故障问题，实现装置长期稳定运行，油烟VOC排放达标。装置的长期稳定运行，排放达标给生产带来更多保障，提高整体效率；油烟VOC的达标排放消除了工厂气味，以及有害物质对员工、周围居民的影响。The plastic soot waste gas treatment device provided by the present invention is subjected to centrifugal separation by a cyclone separator and then enters a high-voltage electrostatic degreaser for treatment, and then enters a preprocessor for re-filtering, and the filtered VOC waste gas is catalyzed and oxidized by a photocatalytic purifier and decomposed into CO 2 and H 2 O are non-toxic and harmless substances, and finally enter the activated carbon adsorption tank for deodorization and purification, and then enter the steam for high-temperature treatment to realize the regeneration and adsorption of activated carbon. The device has simple structure, simple operation, and low operating cost. It can efficiently treat plastic oil fume waste gas without bringing oil fume into subsequent processing equipment, eliminate equipment failure problems caused by oil fume, realize long-term stable operation of the device, and meet oil fume VOC emission standards. The long-term stable operation of the device and the emission compliance bring more guarantees to production and improve the overall efficiency; the emission of oil fume VOC up to the standard eliminates the smell of the factory and the impact of harmful substances on employees and surrounding residents.
附图说明Description of drawings
图1为本发明塑料油烟VOC治理装置的结构示意图。Fig. 1 is a schematic structural diagram of a plastic lampblack VOC treatment device of the present invention.
附图标记中：1-旋风分离器、2-高压静电除油烟器、3-预处理器、4-光催化净化器、5-冷却器、6-风机和7-吸附罐。Among the reference signs: 1-cyclone separator, 2-high-voltage electrostatic oil fume remover, 3-preprocessor, 4-photocatalytic purifier, 5-cooler, 6-fan and 7-adsorption tank.
具体实施方式Detailed ways
下面结合具体实施方式对本发明作进一步详细说明。应该强调的是，下述说明仅仅是示例性的，而不是为了限制本发明的范围及其应用。The present invention will be further described in detail below in combination with specific embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
实施例1Example 1
如附图1所示，本发明所述塑料油烟VOC废气治理装置，包括旋风分离器1、高压静电除油烟器2、预处理器3、光催化净化器4、冷却器5、风机6和吸附罐7；所述高压静电除油烟器2进口与旋风分离器1出口连接，高压静电除油烟器2出口与预处理器3进口连接，预处理器3出口与光催化净化器4进口连接，光催化净化器4出口与冷却器5进口连接，冷却器5出口与风机6进口连接，所述风机6出口与吸附罐7进口相连。所述吸附罐内部设有活性炭吸附层。吸附罐内部设的吸附剂为活性炭吸附层不仅能够对废气净化处理，还能起到除臭的功效，且通入高温蒸汽进行能够实现活性炭的再生利用，降低了生产成本。所述预处理器内部设有活性炭过滤层，能够对油烟废气进行初步预处理，减少设备的堵塞及使得油烟废气净化更加完全。As shown in the accompanying drawing 1, the plastic soot VOC exhaust gas treatment device of the present invention comprises a cyclone separator 1, a high-voltage electrostatic oil fume remover 2, a preprocessor 3, a photocatalytic purifier 4, a cooler 5, a blower fan 6 and an adsorption Tank 7; the inlet of the high-voltage electrostatic oil fume remover 2 is connected to the outlet of the cyclone separator 1, the outlet of the high-voltage electrostatic oil fume remover is connected to the inlet of the preprocessor 3, the outlet of the preprocessor 3 is connected to the inlet of the photocatalytic purifier 4, and the light The outlet of the catalytic converter 4 is connected to the inlet of the cooler 5, the outlet of the cooler 5 is connected to the inlet of the fan 6, and the outlet of the fan 6 is connected to the inlet of the adsorption tank 7. The inside of the adsorption tank is provided with an activated carbon adsorption layer. The adsorbent inside the adsorption tank is the activated carbon adsorption layer, which can not only purify the exhaust gas, but also play a deodorizing effect, and the regeneration of activated carbon can be realized by passing high-temperature steam, which reduces the production cost. The inside of the preprocessor is provided with an activated carbon filter layer, which can perform preliminary pretreatment on the oil fume exhaust gas, reduce equipment blockage and make the oil fume exhaust gas purification more complete.
使用本实施例塑料油烟VOC废气治理装置对ABS塑料加工油烟VOC废气治理，具体工艺如下：Using the plastic lampblack VOC exhaust gas treatment device of this embodiment to treat ABS plastic processing lampblack VOC exhaust gas, the specific process is as follows:
(1)用于处理风量60000m3/h，含油烟量约5％，VOC浓度约100mg/m3时，油烟VOC废气进入旋风分离器后，废气中的部分油类和颗粒在分离器的离心作用下下沉，剩下的废气向上进入高压静电除油烟器，油烟在高压电场中带电，带电粒子在电场中会受到电场力的作用，油烟被电场阳极吸附；(1) When the air volume is 60000m 3 /h, the soot content is about 5%, and the VOC concentration is about 100mg/ m3 , after the oil fume VOC exhaust gas enters the cyclone separator, part of the oil and particles in the exhaust gas are in the centrifuge of the separator It sinks under the action, and the remaining exhaust gas enters the high-voltage electrostatic range hood upwards. The oil fume is charged in the high-voltage electric field, and the charged particles will be affected by the electric field force in the electric field, and the oil fume is adsorbed by the anode of the electric field;
(2)经过高压静电除油烟器处理后的油烟VOC废气进入预处理器，采用活性炭进行初步过滤，防止进入催化氧化时堵塞设备；(2) After being treated by the high-voltage electrostatic oil fume remover, the soot VOC exhaust gas enters the preprocessor, and is initially filtered by activated carbon to prevent the equipment from being blocked when it enters the catalytic oxidation;
(3)经过预处理后的VOC废气进入光催化净化器，通过净化器的紫外光和产生的氧化离子破坏废气中的有机物成分，紫外灯的波长为185mm，分解成CO2、H2O无毒无害物质，氧化后的气体进入冷却器冷却；(3) The pretreated VOC exhaust gas enters the photocatalytic purifier, and the ultraviolet light and oxidized ions produced by the purifier destroy the organic components in the exhaust gas. The wavelength of the ultraviolet lamp is 185mm, and it is decomposed into CO 2 , H 2 O Toxic and harmless substances, the oxidized gas enters the cooler for cooling;
(4)再将冷却后的气体用风机输送至装有活性炭的吸附罐进行吸附及除臭，通入蒸汽进行使得活性炭高温再生，废气从吸附罐的排气管排放。(4) The cooled gas is sent to the adsorption tank equipped with activated carbon for adsorption and deodorization by a fan, and steam is introduced to regenerate the activated carbon at high temperature, and the exhaust gas is discharged from the exhaust pipe of the adsorption tank.
经过检测排出的废气使用本套装置工艺处理后，油烟去除率100％，VOC去除率99％，臭气浓度达到≤500(无量纲)，满足环保要求。After the exhaust gas is tested and treated with this set of equipment, the oil fume removal rate is 100%, the VOC removal rate is 99%, and the odor concentration reaches ≤500 (dimensionless), which meets the environmental protection requirements.
以上内容是结合具体的/优选的实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，其还可以对这些已描述的实施例做出若干替代或变型，而这些替代或变型方式都应视为属于本发明的保护范围。The above content is a further detailed description of the present invention in conjunction with specific/preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make some substitutions or modifications to the described embodiments, and these substitutions or modifications should be regarded as Belong to the protection scope of the present invention.
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