When the exhaust gas has the characteristics of high air volume and low mass concentration, the characteristics of low-temperature high adsorption and high-temperature high desorption of the molecular sieve inside the zeolite wheel can be utilized to adsorb and desorb the exhaust gas. The mass concentration of the generated exhaust gas is about 10-20 times that of the original gas, saving equipment and operating costs for subsequent catalytic oxidation treatment.

沸石濃縮轉(zhuǎn)輪結(jié)構(gòu)分為吸附區(qū)（A區(qū)）、在生區(qū)（R區(qū)）與冷卻區(qū)（P區(qū)）。由加工好的波紋形以及平板狀陶瓷纖維紙采用無(wú)機(jī)黏合的方式制成蜂窩狀轉(zhuǎn)輪，再將具有疏水性的沸石分子篩涂抹在轉(zhuǎn)輪通道上，使其具有吸附性。沸石分子篩的化學(xué)通式為Mx/m[（AlO2）x·(SiO2)y]·zH2O，是一種結(jié)晶硅酸鋁金屬鹽的多孔晶體，其中的硅氧四面體和鋁氧四面體通過(guò)共享氧原子相互連接形成骨架結(jié)構(gòu)。分子篩晶體的內(nèi)部具有不同大小的孔穴，可以吸附比自身孔徑小的分子，排出比其孔徑大的分子。包裝印刷行業(yè)廢氣的相對(duì)濕度一般小于70%，沸石轉(zhuǎn)輪對(duì)VOCs的吸附率可達(dá)到90%以上。隨著廢氣相對(duì)濕度的增加，吸附效率會(huì)有所下降，因此，可在廢氣進(jìn)入沸石轉(zhuǎn)輪前對(duì)其進(jìn)行加熱。根據(jù)風(fēng)量，設(shè)置沸石轉(zhuǎn)輪以1~6r/h的速率進(jìn)行旋轉(zhuǎn)。

The structure of the zeolite concentration wheel is divided into adsorption zone (A zone), living zone (R zone), and cooling zone (P zone). The honeycomb shaped runner is made of processed corrugated and flat ceramic fiber paper by inorganic bonding, and then hydrophobic zeolite molecular sieves are applied to the runner channel to make it adsorbable. The chemical formula of zeolite molecular sieve is Mx/m [(AlO2) x · (SiO2) y] · zH2O, which is a porous crystal of crystalline aluminum silicate metal salt. The silica tetrahedra and alumina tetrahedra are interconnected by shared oxygen atoms to form a skeleton structure. The internal pores of molecular sieve crystals have different sizes, which can adsorb molecules with smaller pore sizes and expel molecules with larger pore sizes. The relative humidity of exhaust gas in the packaging and printing industry is generally less than 70%, and the adsorption rate of VOCs on zeolite wheels can reach over 90%. As the relative humidity of the exhaust gas increases, the adsorption efficiency will decrease. Therefore, the exhaust gas can be heated before entering the zeolite runner. According to the air volume, set the zeolite wheel to rotate at a rate of 1-6r/h.

沸石轉(zhuǎn)輪用分子篩材質(zhì)不可燃、an全性好，可在高溫下進(jìn)行脫附在生，其使用壽命長(zhǎng)達(dá)5~10年。催化氧化工段所采用的氧化催化劑VOCs處理效率大95-98，對(duì)于間歇性工況廢氣，催化氧化比蓄熱式催化燃燒法節(jié)能。氧化反應(yīng)采用的催化劑使用壽命長(zhǎng)，平均5年更換一次，并可作在生處理。整體裝置采用低溫燃燒，既節(jié)約能源又具有高的an全性。

The molecular sieve material used for the zeolite runner is non combustible and has good integrity. It can be desorbed at high temperatures and has a service life of up to 5-10 years. The VOCs treatment efficiency of the oxidation catalyst used in the catalytic oxidation section is 95-98% higher. For intermittent exhaust gas conditions, catalytic oxidation is more energy-saving than regenerative catalytic combustion method. The catalyst used in the oxidation reaction has a long service life, with an average replacement time of 5 years and can be used for in life treatment. The overall device adopts low-temperature combustion, which not only saves energy but also has high integrity.

VOCs沸石轉(zhuǎn)輪-催化氧化裝置采用沸石濃縮與催化劑氧化組合技術(shù)，由多級(jí)過(guò)濾器、沸石轉(zhuǎn)輪、吸附風(fēng)機(jī)、脫附風(fēng)機(jī)、換熱器、催化氧化裝置等分段設(shè)備組成，含有VOCs 的廢氣先經(jīng)過(guò)初步多級(jí)過(guò)濾后，由鼓風(fēng)機(jī)送至沸石轉(zhuǎn)輪分段裝置吸附區(qū)（A 區(qū)）進(jìn)行吸附處理，生成的潔凈空氣被直接排出。隨著沸石轉(zhuǎn)輪的不停旋轉(zhuǎn)，已飽和的轉(zhuǎn)輪吸附區(qū)部分轉(zhuǎn)至在生區(qū)(R 區(qū))，接受來(lái)自反向高溫在生空氣的吹洗并進(jìn)行脫附。脫附后的濃度廢氣直接進(jìn)入催化氧化裝置進(jìn)行氧化分解。經(jīng)過(guò)脫附區(qū)的VOCs廢氣隨后旋轉(zhuǎn)進(jìn)入冷卻區(qū)（P 區(qū)），降溫后返回吸附區(qū)進(jìn)行循環(huán)操作。由于脫附在生區(qū)的空氣風(fēng)量一般僅為處理區(qū)風(fēng)量的1/10， 因此在生后廢氣中的VOCs質(zhì)量濃度約為濃縮前的10 倍。

The VOCs zeolite runner catalytic oxidation device adopts a combination technology of zeolite concentration and catalyst oxidation, consisting of multi-stage filters, zeolite runners, adsorption fans, desorption fans, heat exchangers, catalytic oxidation devices, and other segmented equipment. The waste gas containing VOCs is first subjected to preliminary multi-stage filtration, and then sent by a blower to the adsorption area (Zone A) of the zeolite runner segmented device for adsorption treatment. The generated clean air is directly discharged. With the continuous rotation of the zeolite wheel, the saturated adsorption zone of the wheel partially shifts to the living zone (R zone), receiving blowing and desorption from reverse high-temperature living air. The desorbed concentration of waste gas directly enters the catalytic oxidation device for oxidative decomposition. The VOCs exhaust gas passing through the desorption zone then rotates into the cooling zone (P zone), and after cooling, returns to the adsorption zone for circulation operation. Due to the fact that the air volume desorbed in the raw area is generally only 1/10 of the air volume in the treatment area, the mass concentration of VOCs in the waste gas after production is about 10 times that before concentration.

沸石轉(zhuǎn)輪在生濃縮后的濃度廢氣被吹入下游催化氧化裝置，并由燃燒器對(duì)其進(jìn)行升溫，預(yù)熱至350℃后進(jìn)行催化氧化反應(yīng)。催化氧化全過(guò)程采用蜂窩狀鉑（Pt）觸煤，廢氣中VOCs 經(jīng)催化氧化反應(yīng)生成二氧化碳與水。

The concentrated waste gas from the zeolite runner is blown into the downstream catalytic oxidation device and heated by the burner. After preheating to 350 ℃, the catalytic oxidation reaction is carried out. The entire process of catalytic oxidation uses honeycomb like platinum (Pt) to contact coal, and VOCs in the exhaust gas undergo catalytic oxidation reaction to generate carbon dioxide and water.

通過(guò)催化氧化工段后，被排出的凈化氣體溫度約為360 ℃；為充分利用余熱，將催化氧化設(shè)備凈化后的氣體與在生用廢氣進(jìn)行熱交換，升溫后的在生廢氣用于沸石轉(zhuǎn)輪脫附區(qū)的脫附。

After passing through the catalytic oxidation section, the temperature of the purified gas discharged is about 360 ℃; In order to fully utilize the waste heat, the purified gas from the catalytic oxidation equipment is heat exchanged with the live exhaust gas, and the heated live exhaust gas is used for the desorption of the zeolite runner desorption zone.