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VOCs废气处理:活性炭吸脱附装置结构完成

来源:http://www.yinyehuanbao.com     发布时间:2020-07-03   浏览次数:

活性炭催化燃烧装置充分发挥了蜂窝活性炭吸附模块的强力吸附、浓缩特点,将浓缩后的高浓度VOCs借助催化氧化炉完成无焰燃烧,拆分为CO2和水高空排放,起到净化目的。VOCs废气治理效率高,高达97%之上,充分能实现环评上的规定;另外,RCO装置能耗低、安全性高,采用的催化剂载体能再生,使用期限长。
The activated carbon catalytic combustion device gives full play to the strong adsorption and concentration characteristics of the honeycomb activated carbon adsorption module. The concentrated VOCs with high concentration are combusted in a catalytic oxidation furnace and separated into CO2 and water for high altitude emission, so as to achieve the purpose of purification. VOCs waste gas treatment efficiency is high, up to 97%, which can fully meet the requirements of EIA; in addition, RCO device has low energy consumption and high safety, and the catalyst carrier used can be regenerated and has a long service life.
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特别注意:因为吸附是VOCs积聚、含量提高的全过程,且空间窄小、VOCs多为易燃等因素,情况严重会发生燃爆事故,现介绍采用活性炭催化燃烧装置的安全事故防范:
Special attention: because adsorption is the whole process of VOCs accumulation and content increase, and the space is narrow, VOCs are mostly flammable and other factors, serious situation will lead to combustion and explosion accidents. This paper introduces the safety accident prevention of activated carbon catalytic combustion device
1、静电导出及防雷接地:工业废气在管路、炭床内流动磨擦易产生静电,控制系统设计须充分考虑静电导出,包含炭床内静电导出杆和整个装置的静电接地保护,仪表选型严苛按我国规范执行。
1. Electrostatic discharge and lightning protection grounding: industrial waste gas flows in the pipeline and carbon bed, which is easy to generate static electricity. The design of control system should fully consider the static electricity export, including the electrostatic grounding protection of the electrostatic guide rod in the carbon bed and the whole device. The instrument selection is strict according to China's specifications.
VOC治理设备
2、温度检测:控制系统设计需有多断面、多点位的温度监测系统,并与控制系统的PLC相接,PLC对全部温度信号完成判断并采取相关对策。
2. Temperature detection: the design of the control system requires a temperature monitoring system with multiple sections and multi points, which is connected with the PLC of the control system. The PLC judges all the temperature signals and takes relevant countermeasures.
3、控制吸附时长:因为吸附全过程是罐体内VOCs积聚含量升高全过程,应严控吸附步骤时长,避免局部空间产生爆炸极限,通常,吸附时长不宜大于24h。
3. Control the adsorption time: because the whole process of adsorption is the whole process of VOCs accumulation in the tank, the length of adsorption steps should be strictly controlled to avoid explosion limit in local space. Generally, the adsorption time should not be longer than 24h.
4、吸附剂选取及处理:选取正规厂家生产的高纯度活性炭,避免活性炭杂质过多产生自催化,尤其是用来易产生过氧化物的VOCs的处理;采用甲磺酸等溶剂对活性炭完成处理改性,下降活性炭自燃点,阻燃易爆。
4. Selection and treatment of adsorbent: high purity activated carbon produced by regular manufacturers is selected to avoid autocatalysis caused by excessive impurities in activated carbon, especially for the treatment of VOCs that are easy to produce peroxide; the treatment and modification of activated carbon with methanesulfonic acid and other solvents is completed to reduce the spontaneous combustion point of activated carbon, which is flame retardant and explosive.
5、氮气防护:氮气阀门与解析步骤及温度检测连锁,进到解析步骤后,先启动氮气系统,对穿透炭床完成置换,再启动蒸汽阀完成解析,避免炭床内饱和VOCs遇到高温蒸汽发生燃爆。
5. Nitrogen protection: the nitrogen valve is interlocked with the analysis step and temperature detection. After entering the analysis step, start the nitrogen system first to replace the penetrating carbon bed, and then start the steam valve to complete the analysis, so as to avoid the combustion and explosion of saturated VOCs in the carbon bed when encountering high temperature steam.
6、紧急降温:由降温水管路、水喷淋系统和自动阀门构成,当炭床温度大于设定值,启动氮气防护的同时,紧急降温系统启动完成降温或灭火;该吸附器立即进到脱附状态完成冷却,有效避免吸附芯自燃;并立即启动三通放空阀使之与车间装置隔离。另外,蒸汽阀也可同时启动,有效避免炭床自燃。
6. Emergency cooling: it is composed of cooling water pipe, water spray system and automatic valve. When the temperature of carbon bed is higher than the set value, the emergency cooling system starts to cool down or extinguish the fire; the adsorber enters the desorption state immediately to complete cooling, effectively avoiding the spontaneous combustion of adsorption core; and immediately starts the three-way vent valve to isolate it from the workshop device. In addition, the steam valve can also be started at the same time to effectively avoid the spontaneous combustion of the carbon bed.
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This article is organized and released by VOC governance equipment. Do you have any understanding of these contents? For more information, please click: http://www.yinyehuanbao.com We'll have a lot more to see.

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