大氣環(huán)境問題日益嚴(yán)重，廢氣排放處理也越來越得到廣泛的關(guān)注。VOCs（揮發(fā)性有機(jī)物）作為工業(yè)廢氣的主要組成部分，對(duì)大氣環(huán)境和人體影響較大，同時(shí)因其來源及成分復(fù)雜，處理難度非常大。如何處理VOCs廢氣真是一大令人頭疼的問題！有什么好方法呢？趕緊跟小七來瞧瞧吧！

　　The problem of atmospheric environment is becoming increasingly serious, and the treatment of exhaust emissions is also receiving widespread attention. VOCs (volatile organic compounds), as the main component of industrial waste gas, have a significant impact on the atmospheric environment and human health. At the same time, due to their complex sources and composition, the treatment difficulty is very high. How to deal with VOCs waste gas is really a headache! What are some good methods? Hurry up and take a look with Xiaoqi!

　　吸附回收凈化技術(shù)吸附回收技術(shù)是一種簡(jiǎn)單實(shí)用的VOC治理技術(shù)，其不僅能有效的治理有機(jī)廢氣，而且能回收有機(jī)溶劑，既解決了環(huán)境污染問題，同時(shí)創(chuàng)造了可觀的經(jīng)濟(jì)效益，深得企業(yè)認(rèn)可，具有較好的市場(chǎng)應(yīng)用前景。吸附回收技術(shù)主要是利用吸附材料將廢氣中的有機(jī)溶劑吸附下來，并脫附回收利用有機(jī)溶劑的方法。

　　Adsorption recovery purification technology is a simple and practical VOC treatment technology that can not only effectively treat organic waste gas, but also recover organic solvents. It not only solves the problem of environmental pollution, but also creates considerable economic benefits, which is widely recognized by enterprises and has good market application prospects. Adsorption recycling technology mainly uses adsorption materials to adsorb organic solvents from exhaust gas and desorb them for recycling and utilization.

　　工藝原理該技術(shù)采用顆粒活性炭/活性炭纖維作為吸附材料，吸附飽和后的吸附材料利用熱源將吸附質(zhì)氣化，解析出的高濃度有機(jī)蒸汽被脫附介質(zhì)帶入冷凝單元，經(jīng)冷凝、分離，回收有機(jī)溶劑。依據(jù)據(jù)脫附介質(zhì)不同，有水蒸汽脫-溶劑回收附技術(shù)和熱氮?dú)饷摳?溶劑回收技術(shù)。

　　The process principle of this technology uses granular activated carbon/activated carbon fiber as the adsorbent material. After adsorption saturation, the adsorbent material uses a heat source to vaporize the adsorbate, and the high concentration organic vapor analyzed is carried into the condensation unit by the desorption medium. After condensation and separation, the organic solvent is recovered. According to different desorption media, there are steam desorption solvent recovery and hot nitrogen desorption solvent recovery technologies.

　　技術(shù)特點(diǎn)采用高效吸附材料，吸附效率95%以上，溶劑回收率90%以上。系統(tǒng)化防爆設(shè)計(jì)和安全節(jié)點(diǎn)監(jiān)控，完善的產(chǎn)品質(zhì)量保證體系，確保設(shè)備安全，滿足化工場(chǎng)所苛刻要求。對(duì)于非水溶性有機(jī)溶劑，采用活性炭吸附-水蒸汽脫附-溶劑回收工藝，具有相變熱高，脫附完全，易冷凝的優(yōu)點(diǎn)，可實(shí)現(xiàn)有機(jī)溶劑和水的自動(dòng)有效分離。對(duì)于水溶性大或易水解有機(jī)溶劑，采用活性炭吸附-氮?dú)饷摳?溶劑回收工藝，回收產(chǎn)品中水含量低，溶劑品質(zhì)高、可降低運(yùn)行成本；吸附床內(nèi)配套活性炭保護(hù)系統(tǒng)，充分保證設(shè)施安全?；诳删幊炭刂破鳎≒LC）的控制具有數(shù)據(jù)采集和遠(yuǎn)程控制功能。

　　The technical features adopt high-efficiency adsorbent materials, with an adsorption efficiency of over 95% and a solvent recovery rate of over 90%. Systematic explosion-proof design and safety node monitoring, complete product quality assurance system, ensure equipment safety, and meet the stringent requirements of chemical sites. For non water soluble organic solvents, the activated carbon adsorption water vapor desorption solvent recovery process is adopted, which has the advantages of high phase change heat, complete desorption, and easy condensation, and can achieve automatic and effective separation of organic solvents and water. For organic solvents with high water solubility or easy hydrolysis, the activated carbon adsorption nitrogen desorption solvent recovery process is used to recover products with low water content, high solvent quality, and reduced operating costs; The adsorption bed is equipped with an activated carbon protection system to fully ensure facility safety. The control based on programmable logic controller (PLC) has data acquisition and remote control functions.

　　應(yīng)用領(lǐng)域行業(yè)：化工、石油、制藥工業(yè)、涂裝、印刷及其他使用有機(jī)溶劑 的過程；

　　Application industries: chemical, petroleum, pharmaceutical industries, painting, printing, and other processes using organic solvents;

　　可回收的有機(jī)物種類：

　　Types of recyclable organic compounds:

　　1、烴類：苯、甲苯、二甲苯、溶劑油、石腦油、重芳烴等。

　　1. Hydrocarbons: benzene, toluene, xylene, solvent oil, naphtha, heavy aromatic hydrocarbons, etc.

　　2、鹵烴：三氯乙烷、二氯甲烷、三氯甲烷、四氯化碳等。

　　2. Halogens: Trichloroethane, dichloromethane, trichloromethane, carbon tetrachloride, etc.

　　2、酮類：丙酮、丁酮、甲基異丁酮等。

　　2. Ketones: acetone, butanone, methyl isobutyl ketone, etc.

　　4、酯類：乙酸乙酯、乙酸丁酯、乙酸丙酯等。

　　4. Esters: ethyl acetate, butyl acetate, propyl acetate, etc.

　　5、醇類：乙醇、異丙醇、丁醇等。

　　5. Alcohols: ethanol, isopropanol, butanol, etc.

　　蓄熱式焚燒技術(shù)蓄熱式焚燒爐（Regenerative Thermal Oxidizer，簡(jiǎn)稱RTO)是目前最成熟、最穩(wěn)定、最有效的有機(jī)廢氣處理設(shè)備，采用先進(jìn)的熱交換技術(shù)和新型蜂窩陶瓷蓄熱材料，高效先進(jìn)的換熱系統(tǒng)保證了氧化分解熱量的有效回收，熱回收率95%以上，VOC凈化率99%以上，在有機(jī)廢氣凈化領(lǐng)域具有很大的技術(shù)優(yōu)勢(shì)。

　　Regenerative Thermal Oxidizer (RTO) is currently the most mature, stable, and effective organic waste gas treatment equipment. It adopts advanced heat exchange technology and new honeycomb ceramic thermal storage materials. The efficient and advanced heat exchange system ensures the effective recovery of oxidation and decomposition heat, with a heat recovery rate of over 95% and a VOC purification rate of over 99%. It has great technical advantages in the field of organic waste gas purification.

　　蓄熱式焚燒爐可以處理工業(yè)生產(chǎn)過程中所排放出來的揮發(fā)性有機(jī)氣體（VOC）和臭氣。RTO系統(tǒng)利用高溫氧化去除廢氣，通過控制溫度，停留時(shí)間，湍流系數(shù)和氧氣量將廢氣轉(zhuǎn)化為二氧化碳和水氣，并回收廢氣分解時(shí)所釋放出的熱量，從而達(dá)到環(huán)保節(jié)能的雙重目的。

　　Regenerative incinerators can treat volatile organic gases (VOCs) and odors emitted during industrial production processes. The RTO system utilizes high-temperature oxidation to remove exhaust gas. By controlling temperature, residence time, turbulence coefficient, and oxygen content, the exhaust gas is converted into carbon dioxide and water vapor, and the heat released during the decomposition of the exhaust gas is recovered, thereby achieving the dual purpose of environmental protection and energy conservation.

　　工作原理?yè)]發(fā)性有機(jī)廢氣經(jīng)系統(tǒng)風(fēng)機(jī)推進(jìn)或者吸入RTO入口集風(fēng)管，切換閥引導(dǎo)氣體進(jìn)入蓄熱床，氣體在經(jīng)過陶瓷蓄熱床到燃燒室的過程中被逐漸預(yù)熱，在燃燒室高溫（約800℃）氧化分解，凈化后的高溫尾氣在通過另一陶瓷蓄熱床時(shí)會(huì)將熱量留在其中，使得出口處的蓄熱床得到加熱，凈化尾氣得到降溫，使得出口溫度略高于RTO入口溫度，通常情況下溫升最高不超過50-70℃。

　　The working principle is that volatile organic waste gas is propelled by the system fan or sucked into the RTO inlet manifold, and the switching valve guides the gas into the heat storage bed. The gas is gradually preheated during the process of passing through the ceramic heat storage bed to the combustion chamber, and is oxidized and decomposed at high temperature (about 800 ℃) in the combustion chamber. The purified high-temperature exhaust gas will retain heat when passing through another ceramic heat storage bed, heating the heat storage bed at the outlet and cooling the purified exhaust gas, so that the outlet temperature is slightly higher than the RTO inlet temperature. Generally, the temperature rise does not exceed 50-70 ℃.

　　工藝流程示意圖

　　Process flow diagram

　　切換閥改變氣流進(jìn)入蓄熱床的方向，實(shí)現(xiàn)蓄熱區(qū)與放熱區(qū)的交替轉(zhuǎn)換，實(shí)現(xiàn)最大化回收焚化爐內(nèi)的熱量，高熱能回收率降低了燃料的需求節(jié)省了運(yùn)行成本。

　　The switching valve changes the direction of airflow entering the thermal storage bed, achieving alternating conversion between the thermal storage zone and the heat release zone, maximizing the recovery of heat in the incinerator, reducing the demand for fuel and saving operating costs with high heat recovery rate.

　　當(dāng)系統(tǒng)VOC濃度大于自持濃度（甲苯1200mg/m3、二甲苯1100mg/m3)時(shí)，RTO即不需輔助燃料便能夠維持VOC氧化分解條件，同時(shí)可對(duì)外輸出系統(tǒng)余熱。

　　When the VOC concentration in the system is greater than the self-sustaining concentration (toluene 1200mg/m3, xylene 1100mg/m3), RTO can maintain VOC oxidation and decomposition conditions without the need for auxiliary fuel, and can also output system waste heat externally.

　　技術(shù)特點(diǎn)VOC凈化效率高，2床式凈化效率95%以上，3床式凈化效率99%以上。系統(tǒng)自適應(yīng)強(qiáng)，操作穩(wěn)定、安全性高。可處理多種組分，幾乎所有有機(jī)廢氣，含S、N、鹵族元素的有機(jī)廢氣。多重防爆（LEL連鎖控制、多組防爆膜片設(shè)置、自動(dòng)切換閥組等)措施，設(shè)備安全性高。基于可編程控制器（PLC）的控制具有數(shù)據(jù)采集和遠(yuǎn)程控制功能。變頻器（VFD）驅(qū)動(dòng)允許系統(tǒng)在廢氣量少或者系統(tǒng)待機(jī)狀態(tài)時(shí)低頻運(yùn)行。設(shè)備在廠內(nèi)組裝，系統(tǒng)安裝時(shí)間短。

　　Technical features: High VOC purification efficiency, with a 2-bed purification efficiency of over 95% and a 3-bed purification efficiency of over 99%. The system has strong adaptability, stable operation, and high security. It can process various components, almost all organic waste gases, including organic waste gases containing S, N, and halogen elements. Multiple explosion-proof measures (LEL interlock control, multiple sets of explosion-proof membrane settings, automatic switching valve groups, etc.) ensure high equipment safety. The control based on programmable logic controller (PLC) has data acquisition and remote control functions. Variable frequency drive (VFD) allows the system to operate at low frequencies when there is low exhaust gas or when the system is in standby mode. The equipment is assembled in the factory, and the system installation time is short.

　　應(yīng)用領(lǐng)域行業(yè)：化工、石化、制藥、涂裝、印刷等及其他使用有機(jī)溶劑的過程。

　　Application industries: chemical, petrochemical, pharmaceutical, coating, printing, and other processes that use organic solvents.

　　組分：組分復(fù)雜，不具有回收價(jià)值，難重復(fù)利用。

　　Components: The components are complex, have no recycling value, and are difficult to reuse.

　　吸附濃縮熱氧化技術(shù)大風(fēng)量、低濃度VOC排放在目前我國(guó)的有機(jī)廢氣污染中占了很大的比例，吸附濃縮熱氧化技術(shù)是治理該類廢氣最為經(jīng)濟(jì)有效的技術(shù)途徑。

　　The high air volume and low concentration VOC emissions of adsorption concentration thermal oxidation technology account for a large proportion of organic waste gas pollution in China. Adsorption concentration thermal oxidation technology is the most economical and effective way to treat this type of waste gas.

　　該技術(shù)將吸附濃縮單元和熱氧化單元有機(jī)地結(jié)合起來，不僅可以滿足排放要求，而且可以降低凈化設(shè)備的投資、運(yùn)行費(fèi)用。

　　This technology combines adsorption concentration unit and thermal oxidation unit organically, which not only meets emission requirements but also reduces the investment and operating costs of purification equipment.

　　大風(fēng)量、低濃度有機(jī)廢氣經(jīng)吸附凈化并脫附后轉(zhuǎn)換成小風(fēng)量、高濃度的有機(jī)廢氣，高濃度有機(jī)廢氣進(jìn)入熱氧化單元氧化處理，并將有機(jī)物氧化釋放的熱量有效利用。

　　After adsorption purification and desorption, high air volume and low concentration organic waste gas are converted into low air volume and high concentration organic waste gas. The high concentration organic waste gas enters the thermal oxidation unit for oxidation treatment, and the heat released by the oxidation of organic matter is effectively utilized.

　　工藝原理大風(fēng)量、低濃度有機(jī)廢氣經(jīng)過沸石轉(zhuǎn)輪時(shí)，氣流中的VOC被疏水沸石吸附，凈化尾氣通過轉(zhuǎn)輪排放到大氣中。

　　The process principle is that when high air volume and low concentration organic waste gas pass through a zeolite wheel, the VOCs in the airflow are adsorbed by hydrophobic zeolite, and the purified exhaust gas is discharged into the atmosphere through the wheel.

　　沸石轉(zhuǎn)輪-蓄熱氧化工藝流程示意圖

　　Schematic diagram of zeolite rotary wheel thermal storage oxidation process flow

　　沸石轉(zhuǎn)輪不停旋轉(zhuǎn)，將吸附的VOC轉(zhuǎn)到脫附區(qū)域，吸附在沸石轉(zhuǎn)輪上 的VOC被180~220℃的熱風(fēng)脫附，脫附熱風(fēng)占總處理風(fēng)量的5~10%，脫附下的高濃度有機(jī)廢氣進(jìn)入RTO/CO氧化降解為二氧化碳和水蒸汽等。再生后的吸附轉(zhuǎn)輪經(jīng)過冷卻區(qū)降溫后，返回至吸附區(qū)，完成了吸附/脫附/降溫的循環(huán)過程。

　　The zeolite wheel keeps rotating, transferring the adsorbed VOCs to the desorption area. The VOCs adsorbed on the zeolite wheel are desorbed by hot air at 180-220 ℃, which accounts for 5-10% of the total treated air volume. The high concentration organic waste gas under desorption enters RTO/CO for oxidation and degradation into carbon dioxide and water vapor. After the regenerated adsorption wheel is cooled in the cooling zone, it returns to the adsorption zone, completing the cycle of adsorption/desorption/cooling.

　　沸石轉(zhuǎn)輪結(jié)構(gòu)示意圖

　　Schematic diagram of zeolite wheel structure

　　沸石轉(zhuǎn)輪組合熱氧化三維結(jié)構(gòu)示意圖

　　Schematic diagram of three-dimensional structure of zeolite rotary wheel combined thermal oxidation

　　技術(shù)特點(diǎn)凈化效率高，出口濃度穩(wěn)定，吸附凈化率可達(dá)97%，氧化凈化率99%以上。再生氣采用氧化系統(tǒng)自身氧化熱，可降低系統(tǒng)運(yùn)行費(fèi)用。沸石轉(zhuǎn)輪吸附降低了火災(zāi)風(fēng)險(xiǎn)。沸石轉(zhuǎn)輪濃縮比高達(dá)10-25:1?；诳删幊炭刂破鳎≒LC）的控制具有數(shù)據(jù)采集和遠(yuǎn)程控制功能。變頻器（VFD）驅(qū)動(dòng)允許系統(tǒng)在廢氣量少或者系統(tǒng)待機(jī)狀態(tài)時(shí)低頻運(yùn)行。設(shè)備在廠內(nèi)組裝，系統(tǒng)安裝時(shí)間短。

　　Technical features: high purification efficiency, stable outlet concentration, adsorption purification rate of up to 97%, and oxidation purification rate of over 99%. The regeneration process uses the oxidation heat generated by the oxidation system itself, which can reduce the operating costs of the system. Zeolite wheel adsorption reduces the risk of fire. The zeolite wheel concentration ratio is as high as 10-25:1. The control based on programmable logic controller (PLC) has data acquisition and remote control functions. Variable frequency drive (VFD) allows the system to operate at low frequencies when there is low exhaust gas or when the system is in standby mode. The equipment is assembled in the factory, and the system installation time is short.

　　應(yīng)用領(lǐng)域噴漆車間：如集裝箱、汽車、飛機(jī)、造船、家具、電子、金屬制品等噴涂排氣。各種印刷車間（如凹版印刷、柔印、包裝材料印刷等）排氣。油漆、涂料生產(chǎn)車間排氣。半導(dǎo)體集成電路、液晶顯示屏（LCD）制造過程的排氣處理。?樹脂、橡膠、輪胎等制品生產(chǎn)過程的排氣處理。

　　Application areas: Spray painting workshops such as containers, automobiles, airplanes, shipbuilding, furniture, electronics, metal products, etc. Exhaust from various printing workshops, such as gravure printing, flexographic printing, packaging material printing, etc. Exhaust from paint and coating production workshops. Exhaust treatment during the manufacturing process of semiconductor integrated circuits and liquid crystal displays (LCDs).? Exhaust treatment during the production process of resin, rubber, tires and other products.

　　微生物凈化技術(shù)利用微生物（細(xì)菌、真菌、原生動(dòng)物等）的代謝活動(dòng)使惡臭物質(zhì)氧化降解為二氧化碳、水蒸汽、NO3-、SO42-等無害物質(zhì)的過程，微生物在氧化降解污染物時(shí)獲得能量維持自身生物和繁殖。

　　Microbial purification technology utilizes the metabolic activities of microorganisms (bacteria, fungi, protozoa, etc.) to oxidize and degrade odorous substances into harmless substances such as carbon dioxide, water vapor, NO3-, SO42-, etc. Microorganisms obtain energy to maintain their own biological and reproductive functions during the oxidation and degradation of pollutants.

　　微生物凈化技術(shù)具有設(shè)備投資費(fèi)用少、運(yùn)行費(fèi)用低、操作簡(jiǎn)便、處理徹底、無二次污染等優(yōu)點(diǎn)，特別適合于處理水溶性差（苯、甲苯、二甲苯等）、不易生物降解（硝基苯、甲基叔丁基醚）的有機(jī)廢氣以及硫化氫、氨氣等惡臭廢氣的治理。

　　Microbial purification technology has the advantages of low equipment investment cost, low operating cost, easy operation, thorough treatment, and no secondary pollution. It is particularly suitable for the treatment of organic waste gases with poor water solubility (benzene, toluene, xylene, etc.), low biodegradability (nitrobenzene, methyl tert butyl ether), as well as odorous waste gases such as hydrogen sulfide and ammonia.

　　生物滴濾工藝廢氣經(jīng)底部進(jìn)氣口進(jìn)入生物滴濾池，通過填料層與逆流而下的營(yíng)養(yǎng)液充分接觸和傳質(zhì)，在充足的停留時(shí)間內(nèi)，氣相物質(zhì)經(jīng)平流效應(yīng)、擴(kuò)散效應(yīng)、吸附等綜合作用下通過氣膜并被吸附在潤(rùn)濕的生物膜表面，吸附在生物膜表面的污染物成分被其中的微生物捕獲并吸收，經(jīng)生化反應(yīng)最終轉(zhuǎn)化成為無害的物質(zhì)。微生物代謝產(chǎn)物和老化的生物膜可被循環(huán)液及時(shí)轉(zhuǎn)移。

　　The waste gas from the biological drip filtration process enters the biological drip filter through the bottom inlet, and is fully contacted and transferred with the nutrient solution flowing in reverse through the packing layer. Within sufficient residence time, gas-phase substances are adsorbed on the wet surface of the biofilm through a combination of advection effect, diffusion effect, adsorption, etc. The pollutant components adsorbed on the biofilm surface are captured and absorbed by the microorganisms, and finally converted into harmless substances through biochemical reactions. Microbial metabolites and aged biofilms can be promptly transferred by circulating fluids.

　　工藝流程示意圖

　　Process flow diagram

　　生物過濾工藝生物過濾由增濕液槽和過濾塔組成。VOC氣體經(jīng)增濕液槽加壓預(yù)濕后進(jìn)入過濾塔，與生物膜接觸而被吸收，最終降解成二氧化碳，水蒸汽 和微生物基質(zhì)，凈化后的氣體由頂部排出。定期在塔頂噴淋水，為濾料微生物提供水分，噴淋液呈非連續(xù)相。生物過濾所用填料可自身緩釋肥料（含氮、磷、鉀、鈣、鎂和其它微量元素），無需額外添加營(yíng)養(yǎng)液。

　　The biological filtration process consists of a humidification tank and a filtration tower. After being pressurized and pre wetted by the humidification tank, VOC gas enters the filtration tower and is absorbed by the biofilm, ultimately degrading into carbon dioxide, water vapor, and microbial matrix. The purified gas is discharged from the top. Regularly spray water at the top of the tower to provide moisture for the filter microorganisms, and the spray liquid is in a discontinuous phase. The fillers used in biological filtration can self release fertilizers (containing nitrogen, phosphorus, potassium, calcium, magnesium, and other trace elements) without the need for additional nutrient solutions.

　　技術(shù)特點(diǎn)?運(yùn)行費(fèi)用低。清潔型治理工藝，無二次污染。操作條件溫和，常溫常壓。基于可編程控制器（PLC）的控制具有數(shù)據(jù)采集和遠(yuǎn)程控制功能。采用天然及高分子復(fù)合濾料，濾料不易老化、板結(jié)，使用周期長(zhǎng)。填料孔隙率大于80%，單位壓降小，可選低功率風(fēng)機(jī)，降低能耗和噪音。?接種專用復(fù)合菌劑，單位填料生物量高，處理負(fù)荷提高。

　　Technical features? Low operating costs. Clean treatment process with no secondary pollution. Mild operating conditions, normal temperature and pressure. The control based on programmable logic controller (PLC) has data acquisition and remote control functions. Using natural and polymer composite filter media, the filter media is not easily aged or compacted, and has a long service life. The porosity of the filler is greater than 80%, and the unit pressure drop is small. A low-power fan can be selected to reduce energy consumption and noise.? Vaccination with specialized composite microbial agents results in high biomass per unit of filler and increased processing load.

　　?應(yīng)用領(lǐng)域??垃圾處理過程的堆肥、填埋、焚燒、垃圾滲濾液調(diào)節(jié)池、垃圾中轉(zhuǎn)站、垃圾堆肥；污水處理廠的排污泵站、進(jìn)水格柵、曝氣沉砂池、初沉池、污泥脫水車間；涂料、化工制藥、橡膠塑料、油漆涂料、石油化工、農(nóng)藥和發(fā)酵制藥、制鞋廠、印刷廠、造紙廠、食品加工、牲畜養(yǎng)殖、飼料加工等產(chǎn)生惡臭氣體與廢氣的場(chǎng)合。

　　Application field?? Composting, landfilling, incineration, leachate regulating pool, garbage transfer station, and garbage composting in the process of garbage disposal; Sewage treatment plant's sewage pumping station, inlet grille, aeration sedimentation tank, primary sedimentation tank, sludge dewatering workshop; In places where odorous gases and exhaust gases are generated, such as coatings, chemical pharmaceuticals, rubber and plastics, paints and coatings, petrochemicals, pesticides and fermentation pharmaceuticals, shoe factories, printing factories, paper mills, food processing, livestock breeding, feed processing, etc.

　　適用廢氣排放特征低濃度惡臭氣體、VOC廢氣。

　　Suitable for low concentration odorous gases and VOC exhaust gases with emission characteristics.

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