加油站三次油气回收，很多老板知道“必须装”，但搞不清“装什么、怎么装”。花十几万买的设备，选型不对可能连验收都过不了。

The gas station has undergone three rounds of oil and gas recovery, and many bosses know that it must be installed, but they cannot figure out what to install and how to install it. Equipment purchased for tens of thousands of yuan may not even pass the inspection if the selection is incorrect.

三次回收到底回收什么？

What exactly is recycled after three rounds of recycling?

加油站有三道油气防线：一次回收（卸油时油气回油罐车）、二次回收（加油时油气抽回储罐）、三次回收。前两道是“物理搬家”，真正的“处理”在第三次——储油罐呼吸阀排出的油气、气液比超标产生的挥发气，经过三次设备处理后，尾气达标排放，液态油回罐利用。

There are three oil and gas defense lines at gas stations: primary recovery (oil and gas return to the tank truck during unloading), secondary recovery (oil and gas are pumped back to the storage tank during refueling), and tertiary recovery. The first two steps are "physical relocation", and the real "treatment" is in the third step - the oil and gas discharged from the breathing valve of the oil storage tank, and the volatile gas generated by the gas-liquid ratio exceeding the standard. After three rounds of equipment treatment, the exhaust gas meets the standard and is discharged, and the liquid oil is returned to the tank for use.

主流技术路线：冷凝+吸附是“黄金搭档”

Mainstream technology route: condensation+adsorption is the "golden partner"

目前市场上最常见的组合是冷凝+吸附法，成熟稳定。原理很简单：第一道是二级冷凝，将油气降温到-40℃至-50℃，大约85%的油气液化回收；剩下浓度较低的尾气进入吸附系统（活性炭吸附），富集浓缩后送回冷凝深度处理。核心好处是：先冷凝去掉大头，吸附系统只处理“剩下的”，吸附床不会因高温积累热量导致安全隐患，运行安全可靠。实测数据显示，采用该工艺的装置，尾气非甲烷总烃浓度可低至0.36-0.45mg/m?，远优于国标及多地地方标准。

The most common combination currently on the market is the condensation+adsorption method, which is mature and stable. The principle is simple: the first step is secondary condensation, which cools the oil and gas to -40 ℃ to -50 ℃, and approximately 85% of the oil and gas is liquefied and recovered; The remaining exhaust gas with lower concentration enters the adsorption system (activated carbon adsorption), is enriched and concentrated, and then sent back for further condensation treatment. The core advantage is that the large head is first condensed and removed, and the adsorption system only processes the "remaining". The adsorption bed will not accumulate heat due to high temperature, which will cause safety hazards, and the operation is safe and reliable. According to actual test data, the concentration of non methane total hydrocarbons in the exhaust gas of the device using this process can be as low as 0.36-0.45mg/m? Far superior to national standards and local standards in many regions.

政策红线：2000吨以上加油站必须装

Policy red line: Gas stations with a capacity of over 2000 tons must install

《加油站大气污染物排放标准》（GB20952）要求储油库及年销售汽油量≥5000吨的加油站限时完成改造。最新政策已扩展至年销售汽油量2000吨以上的加油站，2027年前必须完成。排放限值也越来越严——京津冀地区新建加油站油气处理装置排放1小时平均浓度已要求≤10g/m?，比国标25g/m?大幅加严。

The "Emission Standards for Air Pollutants from Gas Stations" (GB20952) require that oil storage tanks and gas stations with an annual sales volume of ≥ 5000 tons of gasoline complete the renovation within a limited time. The latest policy has been extended to gas stations with an annual sales volume of over 2000 tons of gasoline, which must be completed before 2027. The emission limits are becoming increasingly strict - the average concentration of oil and gas treatment equipment emissions from newly built gas stations in the Beijing Tianjin Hebei region has been required to be ≤ 10g/m per hour? Is it 25g/m higher than the national standard? Significantly stricter.

选型避坑：别被“纯冷凝”忽悠了

Selection avoidance pitfalls: Don't be fooled by "pure condensation"

纯冷凝设备要做到-70℃才能满足排放要求，耗电惊人；纯吸附设备活性炭更换频繁、运行成本高。市面上真正成熟的方案几乎都是冷凝+吸附组合。选型时重点关注三个指标：排放浓度（国标25g/m?，京津冀加严至10-20g/m?）、处理能力（匹配加油站汽油销量）、在线监测系统（是否支持实时上传数据）。设备没装对，验收不通过不说，还可能面临环保处罚。

Pure condensing equipment needs to reach -70 ℃ to meet emission requirements, which consumes an astonishing amount of electricity; The replacement of activated carbon in pure adsorption equipment is frequent and the operating cost is high. The truly mature solutions on the market are almost always a combination of condensation and adsorption. When selecting, focus on three indicators: emission concentration (25g/m according to the national standard)? Will the Beijing Tianjin Hebei region be tightened to 10-20g/m? ）Processing capability (matching gas station gasoline sales), online monitoring system (whether it supports real-time data upload). If the equipment is not installed correctly and fails the acceptance inspection, it may also face environmental penalties.

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This article is a friendly contribution from the gas station's three times oil and gas recovery equipment For more information, please click: http://www.kosman2018.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.