加油站為了完成油氣污染治理，符合國家環(huán)境部門要求，會(huì)安裝油氣回收設(shè)備，油氣回收是采用吸附法、吸收法、冷凝法或膜分離法，將揮發(fā)的汽油油氣收集起來，使之重新變?yōu)槠突厥绽玫?。常見的油氣回收設(shè)備有油氣分離接頭、同軸短皮管、拉斷閥、同軸長(zhǎng)膠管、油氣排放處理裝置等。下面一起來了解一下加油站油氣回收設(shè)備有哪些吧。

　　In order to complete the treatment of oil and gas pollution and meet the requirements of the national environmental department, gas stations will install oil and gas recovery equipment. Oil and gas recovery uses adsorption, absorption, condensation, or membrane separation methods to collect volatile gasoline and gas, and convert them back into gasoline for recycling and reuse. Common oil and gas recovery equipment includes oil and gas separation joints, coaxial short hoses, break valves, coaxial long hoses, and oil and gas discharge treatment devices. Let's learn about the oil and gas recovery equipment at gas stations together.

　　一、加油站油氣回收是什么意思

　　1、 What does gas station oil and gas recovery mean

　　加油站油氣回收是指在裝卸汽油和給車輛加油的過程中，將揮發(fā)的汽油油氣收集起來，通過吸收、吸附或冷凝等工藝中的一種或兩種方法，或減少油氣的污染，或使油氣從氣態(tài)轉(zhuǎn)變?yōu)橐簯B(tài)，重新變?yōu)槠?，達(dá)到回收利用的目的。

　　Gas station oil and gas recovery refers to the process of collecting volatile gasoline and gas during the loading and unloading of gasoline and refueling of vehicles. Through one or two methods such as absorption, adsorption, or condensation, the pollution of oil and gas can be reduced, or the oil and gas can be transformed from a gaseous state to a liquid state and then back into gasoline, achieving the purpose of recycling and utilization.

　　油氣回收是節(jié)能環(huán)保型的新技術(shù)，運(yùn)用油氣回收技術(shù)回收油品在儲(chǔ)運(yùn)、裝卸過程中排放的油氣，可以防止油氣揮發(fā)造成大氣污染，消除安全隱患，通過提高對(duì)能源的利用率，減小經(jīng)濟(jì)損失，從而得到可觀的效益回報(bào)。

　　Oil and gas recovery is a new energy-saving and environmentally friendly technology. By using oil and gas recovery technology to recover the oil and gas emitted during the storage, transportation, loading and unloading of oil products, it can prevent air pollution caused by oil and gas volatilization, eliminate safety hazards, improve energy utilization efficiency, reduce economic losses, and obtain considerable benefits and returns.

　　二、加油站油氣回收設(shè)備有哪些

　　2、 What are the gas recovery equipment at gas stations

　　加油站的油氣回收設(shè)備一般分為一次回收設(shè)備、二次回收設(shè)備和三次回收設(shè)備三種，分別是：

　　The oil and gas recovery equipment at gas stations is generally divided into three types: primary recovery equipment, secondary recovery equipment, and tertiary recovery equipment, which are:

　　1、一次回收設(shè)備：油回氣快速接頭及蓋、帶法蘭閥門卸油阻端接頭等。

　　1. One time recycling equipment: oil return gas quick connector and cover, flange valve oil discharge resistance end connector, etc.

　　2、二次回收設(shè)備：油氣分離接頭、同軸短皮管、拉斷閥、同軸長(zhǎng)膠管、油氣回收油槍、氣液比的控制閥等。

　　2. Secondary recycling equipment: oil and gas separation joint, coaxial short leather tube, break valve, coaxial long rubber tube, oil and gas recovery oil gun, gas-liquid ratio control valve, etc.

　　3、三次回收設(shè)備：主要是一些油氣排放處理裝置。

　　3. Triple recycling equipment: mainly includes oil and gas discharge treatment devices.

　　三、加油站油氣回收有幾種方法

　　3、 There are several methods for gas station oil and gas recovery

　　1、吸附法

　　1. Adsorption method

　　利用活性炭、硅膠或活性纖維等吸附劑對(duì)油氣/空氣混合氣的吸附力的大小，實(shí)現(xiàn)油氣和空氣的分離。油氣通過活性炭等吸附劑，油氣組分吸附在吸附劑表面，然后再經(jīng)過減壓脫附或蒸汽脫附，富集的油氣用真空泵抽吸到油罐或用其他方法液化；而活性炭等吸附劑對(duì)空氣的吸附力非常小，未被吸附的尾氣經(jīng)排氣管排放。

　　By utilizing adsorbents such as activated carbon, silica gel, or activated fibers to determine the adsorption force of oil gas/air mixtures, the separation of oil gas and air can be achieved. Oil and gas are adsorbed on the surface of adsorbents such as activated carbon, and then undergo depressurization or steam desorption. The enriched oil and gas are pumped into oil tanks by vacuum pumps or liquefied by other methods; The adsorption force of activated carbon and other adsorbents on air is very small, and the unadsorbed exhaust gas is discharged through the exhaust pipe.

　　2、吸收法

　　2. Absorption method

　　根據(jù)混合油氣中各組分在吸收劑中的溶解度的大小，來進(jìn)行油氣和空氣的分離。一般用柴油等貧油做吸收劑。一般采用油氣與從吸收塔頂淋噴的吸收劑進(jìn)行逆流接觸，吸收劑對(duì)烴類組分進(jìn)行選擇性吸收，未被吸收的氣體經(jīng)阻火器排放，吸收劑進(jìn)入真空解吸罐解吸，富集油氣再用油品吸收。

　　Separate oil and air based on the solubility of each component in the absorbent in the mixed oil and gas mixture. Generally, lean fuels such as diesel are used as absorbents. Generally, oil and gas are in countercurrent contact with the absorbent sprayed from the top of the absorption tower. The absorbent selectively absorbs hydrocarbon components, and the unabsorbed gas is discharged through a flame arrester. The absorbent enters a vacuum desorption tank for desorption, and the enriched oil and gas are then absorbed by oil products.

　　3、冷凝法

　　3. Condensation method

　　利用烴類物質(zhì)在不同溫度下的蒸汽壓差異，通過降溫使油氣中一些烴類蒸汽壓達(dá)到過飽和狀態(tài)，過飽和蒸汽冷凝成液態(tài)，回收油氣，一般采用多級(jí)連續(xù)冷卻方法降低油氣的溫度，使之凝聚為液體回收。

　　By utilizing the difference in vapor pressure of hydrocarbon substances at different temperatures, the vapor pressure of some hydrocarbons in oil and gas is brought to a supersaturated state through cooling. The supersaturated vapor condenses into a liquid state to recover oil and gas. Generally, multi-stage continuous cooling methods are used to reduce the temperature of oil and gas and condense it into liquid for recovery.

　　4、膜分離法

　　4. Membrane separation method

　　利用特殊高分子膜對(duì)烴類有優(yōu)先透過性的特點(diǎn)，讓油氣和空氣混合氣在一定壓力的推動(dòng)下，使油氣分子優(yōu)先透過高分子膜，而空氣組分則被截留排放，富集的油氣傳輸回油罐或用其他方法液化。

　　By utilizing the preferential permeability of special polymer membranes for hydrocarbons, the mixture of oil, gas, and air is pushed under a certain pressure to allow oil and gas molecules to preferentially pass through the polymer membrane, while air components are intercepted and discharged. The enriched oil and gas are transported back to the oil tank or liquefied by other methods.

　　以上就是四種主要的加油站油氣回收方法，還有一種方法是直接燃燒法，將儲(chǔ)運(yùn)過程中產(chǎn)生的含烴氣體直接氧化燃燒，燃燒產(chǎn)生的二氧化炭、水和空氣作為處理后的凈化氣體直接排放。不過該工藝流程僅作為一種控制油氣排放的處理措施，其不能回收油品，也沒有經(jīng)濟(jì)效益。

　　The above are the four main methods for oil and gas recovery at gas stations. Another method is direct combustion, which oxidizes and burns the hydrocarbon containing gases generated during storage and transportation. The carbon dioxide, water, and air produced by combustion are directly discharged as purified gases after treatment. However, this process is only used as a treatment measure to control oil and gas emissions, and it cannot recover oil products and has no economic benefits.

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