目前就化工企业产生的废气来说，绝大多数不具备回收利用的价值，RTO蓄热式焚烧炉设备是适合化工企业的废气治理方式。RTO蓄热式焚烧炉设备的废气处理方式是将废气焚烧成为二氧化碳和水，并且不会产生二次污染，燃烧废气过程中所产生的高温热能也能够进行回收利用，并不会造成过多的经济成本。RTO蓄热式焚烧炉与守旧的催化燃烧、直燃式热氧化炉（TO）相比，具有热速率不错（≥）、运行成本还行、能处理大风量中低浓度废气等特点，浓度稍高时，还可进行二次余热回收，降低生产运营成本。

At present, the vast majority of waste gas generated by chemical enterprises does not have the value of recycling. RTO thermal storage incinerator equipment is a suitable waste gas treatment method for chemical enterprises. The waste gas treatment method of RTO thermal storage incinerator equipment is to incinerate the waste gas into carbon dioxide and water, without generating secondary pollution. The high-temperature heat generated during the combustion of waste gas can also be recycled and reused, without causing excessive economic costs. Compared with traditional catalytic combustion and direct combustion thermal oxidation furnaces (TO), RTO thermal storage incinerators have the characteristics of good heat rate (≥), decent operating costs, and the ability to handle high air volume and low concentration waste gas. When the concentration is slightly high, they can also be used for secondary waste heat recovery, reducing production and operation costs.

RTO蓄热室内的腐蚀分高温氧化腐蚀和高温下特别离子的腐蚀、偏流造成的热应力腐蚀以及燃烧过程中氧化还原交替性腐蚀，此类腐蚀用ZS-811经得起高温涂料或ZS-821陶瓷涂料可。而在蜂窝陶瓷蓄热体上，可涂刷ZS-1061不怕高温远红外辐射涂料增强陶瓷的蓄热能力，提升换热速度，减小蓄热体的体积，并可提升其抗热震稳定性。

The corrosion inside the RTO thermal storage chamber can be divided into high-temperature oxidation corrosion, corrosion caused by special ions at high temperatures, thermal stress corrosion caused by bias current, and alternating oxidation-reduction corrosion during combustion. This type of corrosion can be solved by using ZS-811 high-temperature coating or ZS-821 ceramic coating. On the honeycomb ceramic thermal storage body, ZS-1061 high temperature resistant far-infrared radiation coating can be applied to enhance the thermal storage capacity of the ceramic, improve heat transfer speed, reduce the volume of the thermal storage body, and improve its thermal shock stability.

废气中含有大量粉尘颗粒，循环热交换部件会被高温气流冲刷磨损，是切换阀的频繁动作磨损较快，积攒到程度会出现阀门密封不严、动作速度慢等问题，会大地影响使用性能。因此，切换阀可涂刷ZS-1031涂料进行防护。

The exhaust gas contains a large amount of dust particles, and the circulating heat exchange components will be washed and worn by high-temperature airflow. The frequent action of the switching valve will cause rapid wear, and the accumulation will lead to problems such as loose valve sealing and slow action speed, which will greatly affect the performance of use. Therefore, the switching valve can be coated with ZS-1031 coating for protection.

为了提升热能利用率，还可以在RTO蓄热焚烧炉后设置换热器增加余热利用，换热器一般是选用ZS-722不怕酸导热涂料或ZS-1021高温合金封闭涂料进行防护。尾气排放管道、引风机以及烟囱则是选用ZS-1041烟气涂料就可以了。

In order to improve the utilization rate of heat energy, a heat exchanger can be installed behind the RTO thermal storage incinerator to increase the utilization of waste heat. The heat exchanger is generally protected with ZS-722 acid resistant thermal conductive coating or ZS-1021 high-temperature alloy sealing coating. The exhaust pipe, induced draft fan, and chimney can be coated with ZS-1041 smoke paint.

蓄热燃烧设备已经被普遍应用于各行各业，在使用RTO蓄热燃烧设备的过程中，稳定问题是需要主要关注的。RTO系统的稳定控制方法有哪些？

Thermal storage combustion equipment has been widely used in various industries, and stability issues need to be the main concern when using RTO thermal storage combustion equipment. What are the stability control methods for RTO systems?

在进行RTO系统设计时，需要优先考虑到稳定问题。

When designing an RTO system, stability issues need to be given priority consideration.

限制进入RTO炉的废气浓度，采用变频稀释风机调节稀释风量的方法控制氧化炉进入口废气浓度。控制策略采用针对混合废气LEL的闭环调节，通过增减稀释风机频率，调节稀释风量，控制废气进入口LEL。当LEL增加时，加大稀释风量；当LEL减小时，减小稀释风量。主要控制LEL在20%～25%，一般设定在20%并自动跟踪。

Limit the concentration of exhaust gas entering the RTO furnace, and use a variable frequency dilution fan to adjust the dilution air volume to control the concentration of exhaust gas entering the oxidation furnace. The control strategy adopts closed-loop regulation for mixed exhaust gas LEL, by increasing or decreasing the frequency of the dilution fan, adjusting the dilution air volume, and controlling the exhaust gas inlet LEL. When LEL increases, increase the dilution air volume; When the LEL decreases, decrease the dilution air volume. The main control LEL is between 20% and 25%, usually set at 20% and automatically tracked.

疏排炉内富余热量，通过控制燃烧室的温度来调节热旁通阀开度，当燃烧室的温度升高时，开大热旁通阀，增加送余热回收装置的热量；当燃烧室的温度降低时，关小热旁通阀，减少送余热回收装置的热量。若RTO系统未设置余热回收装置，可通过热旁通阀将富余的热量直接排烟囱。

Drain the excess heat inside the furnace and adjust the opening of the thermal bypass valve by controlling the temperature of the combustion chamber. When the temperature of the combustion chamber rises, open the thermal bypass valve to increase the heat sent to the waste heat recovery device; When the temperature of the combustion chamber decreases, close the thermal bypass valve to reduce the heat sent to the waste heat recovery device. If the RTO system is not equipped with a waste heat recovery device, the excess heat can be directly discharged to the chimney through a thermal bypass valve.

当入炉浓度无法限制、富余热量无法疏放或设备故障无法运行时，触发系统联锁停炉。稀释后混合废气浓度超限或稀释风机故障跳闸判定为入炉浓度无法限制；热旁通阀已全开但还有富余热量、富余热量超过余热回收装置限值判定为富余热量无法疏放；蓄热式切换阀故障，导致废气持续从一蓄热室进一蓄热室出，无法切换蓄热室；燃烧室、蓄热室、燃烧炉出入口管道温度超限或故障，判定为系统故障，触发联锁停炉。

When the concentration entering the furnace cannot be limited, excess heat cannot be dissipated, or equipment malfunctions and cannot operate, the system interlocking shutdown will be triggered. The concentration of the diluted mixed exhaust gas exceeds the limit or the dilution fan malfunctions and trips, indicating that the concentration entering the furnace cannot be limited; The thermal bypass valve is fully open but there is still excess heat. If the excess heat exceeds the limit of the waste heat recovery device, it is determined that the excess heat cannot be released; The malfunction of the thermal storage switching valve resulted in the exhaust gas continuously entering and exiting from one storage chamber, making it impossible to switch the storage chamber; If the temperature of the combustion chamber, heat storage chamber, and the inlet and outlet pipelines of the combustion furnace exceeds the limit or malfunctions, it is determined as a system fault and triggers an interlock shutdown.

蓄热燃烧设备作为废气处理设备，也是有不适宜处理的废气存在的，那么RTO蓄热燃烧设备适合处理什么废气？

As a waste gas treatment equipment, thermal storage combustion equipment also has unsuitable waste gas to be treated. So what waste gas is suitable for RTO thermal storage combustion equipment to treat?

蓄热燃烧设备适合处理的废气：</p><p>1、物低浓度(同时达到低于25%LEL)、大风量。

Heat storage combustion equipment is suitable for treating waste gases:</p><p>1. Low concentration of substances (reaching less than 25% LEL) and high air volume.

含有容易使催化剂中毒或活性衰退成分的废气。

Waste gas containing components that can easily cause catalyst poisoning or activity decline.

废气中含有多种成分、或成分经常发生变化。

The exhaust gas contains multiple components or the components often change.

适用废气种类：烷烃、烯烃、醇类、酮类、醚类、酯类、芳烃、苯类等碳氢化合物废气。

Applicable types of exhaust gases: hydrocarbon exhaust gases such as alkanes, olefins, alcohols, ketones, ethers, esters, aromatics, benzene, etc.

蓄热燃烧设备不适合处理的废气：

Waste gas that thermal storage combustion equipment is not suitable for processing:

易反应、易聚合的物，会发生自聚现象，产生高沸点交联物质，会堵塞蓄热体。

Substances that are easy to react and polymerize will undergo self aggregation, producing high boiling cross-linked substances that can block the thermal storage body.

易反应、易聚合的物，不宜采用蓄热燃烧法处理。

Substances that are easily reactive and polymerizable should not be treated using thermal storage combustion method.

进入蓄热燃烧装置的物浓度，应高于其爆炸下限的25%。

The concentration of substances entering the thermal storage combustion device should be 25% higher than its lower explosive limit.

进入蓄热燃烧装置的废气中颗粒物浓度应低于5mg/m3，含有焦油、漆雾等黏性物质时应从严控制。

The concentration of particulate matter in the exhaust gas entering the thermal storage combustion device should be less than 5mg/m3, and it should be strictly controlled when it contains viscous substances such as tar and paint mist.