在加油站日常管理及油品接卸中，經(jīng)常會提到加油站油氣回收，而且會將這些分為一次、二次、三次回收，但對于每種的作用與區(qū)別并不是每個人都很了解，下面我們來具體看看這三種有何區(qū)別。

　　In the daily management of gas stations and the unloading of oil products, the topic of gas station vapor recovery is often mentioned, and it is often categorized into primary, secondary, and tertiary recovery. However, not everyone fully understands the functions and differences of each. Let's take a closer look at the distinctions among these three types.

　　一次油氣回收系統(tǒng)，是指油罐車在卸油時，加油站油罐內(nèi)的油氣回收到油罐車內(nèi)，油罐車將油氣再回收到油庫內(nèi)的過程。?這個過程也就是加油站在接卸汽油時，除了連接卸油管外，還要連接一條油氣回收管，目的是卸油時，將油罐內(nèi)的油氣，收集到油罐車內(nèi)。概括說就是是卸油油氣回收。

　　The primary vapor recovery system refers to the process where vapor from the gas station's fuel tank is recovered into the tanker during the unloading process, and then the tanker transfers the vapor back to the oil depot. This process involves connecting a vapor recovery pipe in addition to the unloading pipe when the gas station is receiving and unloading gasoline. The purpose is to collect the vapor from the fuel tank into the tanker during the unloading process. In summary, it is the recovery of vapor during oil unloading.

　　二次油氣回收

　　Secondary oil and gas recovery

　　二次油氣回收原理是利用加油槍上的特殊裝置，將原本由汽車油箱逸散于空氣中的油氣經(jīng)加油槍、真空泵回收至油罐內(nèi)。對應(yīng)到現(xiàn)場，就是加油過程中，通過集氣罩將油氣回收，通過真空泵回收到油罐內(nèi)。概括說就是加油油氣回收。

　　The principle of secondary oil vapor recovery involves utilizing a special device on the fuel nozzle to recycle the oil vapor originally emitted into the air from the vehicle's fuel tank into the oil tank via the fuel nozzle and vacuum pump. In practical terms, during the refueling process, the oil vapor is collected through a gas collection hood and then recycled into the oil tank via the vacuum pump. In summary, it refers to the recovery of oil vapor during refueling.

　　三次油氣回收

　　Three times of oil and gas recovery

　　三次油氣回收是指油品儲存過程中，對儲油罐內(nèi)呼出的油氣進(jìn)行處理，三次油氣回收系統(tǒng)需安裝在已經(jīng)完成二次油氣回收系統(tǒng)改造的加油站。隨著加油量增加油罐壓力會不斷上升。當(dāng)汽油儲罐壓力升高到一定值時時，三次油氣回收設(shè)備啟動，以一定的流量從汽油儲罐抽取汽油油氣，轉(zhuǎn)變?yōu)橐簯B(tài)回到儲油罐中，同時降低罐內(nèi)壓力。

　　Three-stage vapor recovery refers to the treatment of vapor emitted from oil storage tanks during the storage process. The three-stage vapor recovery system must be installed at gas stations that have already undergone the modification of the two-stage vapor recovery system. As the refueling volume increases, the pressure in the tank will continue to rise. When the pressure in the gasoline storage tank rises to a certain value, the three-stage vapor recovery equipment will start, extracting gasoline vapor from the tank at a certain flow rate, converting it into a liquid state, and returning it to the storage tank, while reducing the pressure inside the tank.

　　油氣回收常用名詞解釋：

　　Explanation of common terms used in oil and gas recovery:

　　1．密閉性：是指加油站所有汽油設(shè)備（包括加油機、工藝管線、儲油罐、真空壓力閥（也叫呼吸閥）等）系統(tǒng)的密閉程度，通俗點講就是檢驗整個油罐、管道密封是否完好，是否有漏氣、滲漏等情況。

　　1. Tightness: It refers to the degree of tightness of all gasoline equipment systems at gas stations (including fuel dispensers, process pipelines, storage tanks, vacuum pressure valves (also known as breather valves), etc.). In layman's terms, it is to inspect whether the entire oil tank and pipeline seals are intact, and whether there are any air leaks, seepages, or other issues.

　　2．液阻：是指由二次油氣回收設(shè)備至儲油罐的氣相管線對氣體的阻力。也就是二次油氣回收的油氣是否能夠順利的流會油罐或集液罐。

　　2. Liquid resistance: It refers to the resistance to gas flow in the gas phase pipeline from the secondary oil vapor recovery equipment to the storage tank. That is, whether the oil vapor from the secondary oil vapor recovery can smoothly flow back to the storage tank or the liquid collection tank.

　　3．氣液比：是指加油槍回氣量與加油槍出油量的比，檢測值1.0-1.2范圍屬于符合標(biāo)準(zhǔn)。根據(jù)守恒定律，正常情況，加油槍每加出1升油，就應(yīng)該回收同等體積的油氣，這樣才能保持壓力的平衡。

　　3. Gas-liquid ratio: It refers to the ratio of the return gas volume to the dispensed fuel volume of the fuel nozzle. A detection value within the range of 1.0-1.2 is considered to be in compliance with the standard. According to the law of conservation, under normal circumstances, for every liter of fuel dispensed by the fuel nozzle, an equivalent volume of fuel vapor should be recovered, so as to maintain pressure balance.

　　本文由 加油站三次油氣回收設(shè)備  友情奉獻(xiàn).更多有關(guān)的知識請點擊  http://www.ralizheng.com/   真誠的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識我們將會陸續(xù)向大家奉獻(xiàn).敬請期待.

　　This article is kindly contributed by the third-generation oil and gas recovery equipment manufacturer at gas stations. For more relevant knowledge, please visit http://www.ralizheng.com/ with a sincere attitude. We will provide you with comprehensive services. More relevant knowledge will be continuously contributed to you. Please stay tuned