在挥发性有机物（VOCs）排放控制领域，“沸石转轮+蓄热式热氧化器（RTO）”组合工艺正成为石化、涂装、印刷等行业的首选技术方案。该工艺通过吸附浓缩与高温氧化的协同作用，实现废气中污染物的深度净化，同时显著降低能源消耗，推动工业绿色转型。

　　In the field of volatile organic compounds (VOCs) emission control, the combination process of "zeolite wheel+regenerative thermal oxidizer (RTO)" is becoming the preferred technical solution for industries such as petrochemicals, coatings, and printing. This process achieves deep purification of pollutants in exhaust gas through the synergistic effect of adsorption concentration and high-temperature oxidation, while significantly reducing energy consumption and promoting industrial green transformation.

　　工艺原理与技术特性

　　Process principles and technical characteristics

　　沸石转轮作为前端处理单元，其核心是疏水性蜂窝状沸石分子筛。当含VOCs废气以低速通过转轮吸附区时，沸石孔道内的阳离子交换位点通过物理吸附作用捕获有机物分子，净化气排放浓度可降至50mg/m³以下。转轮持续旋转至脱附区，被180-220℃的热风解吸，浓缩比可达10-25倍。浓缩后的高浓度废气进入RTO炉膛，在750-850℃条件下发生氧化反应，生成CO₂和H₂O，热回收效率超95%。

　　The zeolite wheel, as the front-end processing unit, has a hydrophobic honeycomb zeolite molecular sieve as its core. When VOCs containing exhaust gas passes through the rotary adsorption zone at low speed, the cation exchange sites in the zeolite pores capture organic molecules through physical adsorption, and the emission concentration of purified gas can be reduced to 50mg/m³ following. The wheel continues to rotate until it reaches the desorption zone, where it is desorbed by hot air at 180-220 ℃, with a concentration ratio of 10-25 times. The concentrated high concentration exhaust gas enters the RTO furnace and undergoes oxidation reaction at 750-850 ℃ to generate CO₂ And H₂ O, with a heat recovery efficiency of over 95%.

　　组合工艺的核心优势

　　The core advantages of combination technology

　　该工艺突破单一技术局限，形成“吸附-浓缩-氧化”的闭环系统。沸石转轮解决RTO直接处理低浓度废气的能耗难题，RTO则消除沸石转轮脱附气二次污染风险。某汽车涂装线应用数据显示，组合工艺使天然气消耗量下降，VOCs排放浓度稳定低于30mg/m³，远低于国家排放标准。在电子元件制造行业，该工艺成功处理含异丙醇、丙酮的复杂废气，非甲烷总烃去除率超99%。

　　This process breaks through the limitations of a single technology and forms a closed-loop system of "adsorption concentration oxidation". Zeolite wheel solves the energy consumption problem of direct treatment of low concentration exhaust gas by RTO, while RTO eliminates the risk of secondary pollution caused by desorption gas from zeolite wheel. The application data of a certain car painting line shows that the combination process reduces the consumption of natural gas and stabilizes the VOCs emission concentration below 30mg/m³ Far below the national emission standards. In the electronic component manufacturing industry, this process successfully treats complex exhaust gases containing isopropanol and acetone, with a non methane total hydrocarbon removal rate of over 99%.

　　节能降碳的经济价值

　　The economic value of energy conservation and carbon reduction

　　RTO配备的三床式蓄热体采用陶瓷蜂窝材料，换热面积达500m²/m³，热回收率较传统工艺提升。脱附热风利用RTO余热加热，减少额外能源输入。某包装印刷企业实践表明，组合工艺较传统催化燃烧技术年节约标准煤，减排二氧化碳当量。对于间歇性排放工况，设备可接入智能控制系统，根据废气浓度自动调节运行参数，进一步降低空载能耗。

　　The three bed thermal storage body equipped with RTO adopts ceramic honeycomb material, with a heat exchange area of 500m²/m³ The heat recovery rate is improved compared to traditional processes. Desorption hot air utilizes RTO waste heat for heating, reducing additional energy input. The practice of a packaging printing enterprise has shown that the combination process saves standard coal and reduces carbon dioxide equivalent emissions compared to traditional catalytic combustion technology. For intermittent emission conditions, the equipment can be connected to an intelligent control system to automatically adjust operating parameters based on exhaust gas concentration, further reducing no-load energy consumption.

　　安全性能与稳定运行

　　Safety performance and stable operation

　　针对沸石转轮可能存在的脱附不完全风险，系统设置双级冷凝装置，将脱附气温度精准控制在安全范围内。RTO配备泄爆片、阻火器等多重安全装置，炉膛内设置高温限值连锁保护。在化工园区应用中，设备成功处理含氯苯、二甲苯的高危废气，未发生安全事故。对于含硅氧烷等易导致催化剂中毒的废气，转轮吸附层可有效拦截，延长RTO维护周期。

　　In response to the potential risk of incomplete desorption of zeolite rotors, the system is equipped with a two-stage condensing device to accurately control the desorption gas temperature within a safe range. RTO is equipped with multiple safety devices such as explosion-proof discs and flame arresters, and high-temperature limit interlock protection is installed in the furnace. In the application of chemical industrial parks, the equipment successfully processed high-risk waste gases containing chlorobenzene and xylene without any safety accidents. For exhaust gases containing siloxanes that are prone to catalyst poisoning, the rotary adsorption layer can effectively intercept and extend the maintenance cycle of RTO.

　　智能监测与数字赋能

　　Intelligent monitoring and digital empowerment

　　设备搭载物联网监测平台，实时采集温度、压力、浓度等30余项参数。通过边缘计算模块，系统可预测沸石吸附饱和度，提前规划再生周期。在京津冀某工业区，监管部门通过数字孪生平台远程监控12套组合装置，实现排放数据分钟级更新。

　　The device is equipped with an IoT monitoring platform, which collects more than 30 parameters such as temperature, pressure, and concentration in real time. Through the edge computing module, the system can predict the adsorption saturation of zeolite and plan the regeneration cycle in advance. In an industrial zone in the Beijing Tianjin Hebei region, regulatory authorities remotely monitor 12 sets of combined devices through a digital twin platform, achieving minute level updates of emission data.

　　随着“双碳”战略推进，该组合工艺正朝向更高效、更智能方向发展。新型钛硅分子筛转轮可实现脱附温度降低，进一步节能。RTO与热泵技术耦合，可将余热用于厂区供暖，系统综合能效比提升。未来，数字孪生技术将构建虚拟工艺模型，通过模拟不同工况优化运行参数，推动工业废气治理向近零排放目标迈进。

　　With the advancement of the "dual carbon" strategy, this combination process is developing towards greater efficiency and intelligence. The new titanium silicate molecular sieve wheel can achieve a reduction in desorption temperature, further saving energy. The coupling of RTO and heat pump technology can use waste heat for heating in the factory area, improving the overall energy efficiency ratio of the system. In the future, digital twin technology will construct virtual process models, optimize operating parameters by simulating different working conditions, and promote industrial waste gas treatment towards the goal of near zero emissions.

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