CN110585851A - Filling station's cubic vapor recovery system device - Google Patents
Filling station's cubic vapor recovery system device Download PDFInfo
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- CN110585851A CN110585851A CN201911020379.1A CN201911020379A CN110585851A CN 110585851 A CN110585851 A CN 110585851A CN 201911020379 A CN201911020379 A CN 201911020379A CN 110585851 A CN110585851 A CN 110585851A
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- 238000011084 recovery Methods 0.000 title claims abstract description 45
- 238000001179 sorption measurement Methods 0.000 claims abstract description 70
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 2
- 238000010926 purge Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
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- Separation Of Gases By Adsorption (AREA)
Abstract
本发明公开了一种加油站三次油气回收装置，包括、吸附罐、真空泵和埋地储罐；两台吸附罐的底部分别与进气管线的两个进气分支管线相连接，两台吸附罐的底部还分别与抽真空管线的两个抽真空分支管线相连接，抽真空管线与真空泵相连接，真空泵与埋地储罐的再生气管线上还设置有用于初步散热的散热器，接入埋地储罐内的再生气管线一端还与气体分布器相连接，埋地储罐顶部的油气排放管线还与进气管线相连接。本发明的有益效果是，结构简单、成本低，油气经多次循环的吸附、再生、吸收处理过程，油气回收效率高；埋地储罐替代吸收塔来完成吸收环节，且无需配置贫、富油泵，可极大地降低一次投资及减少占地面积。The invention discloses a tertiary oil and gas recovery device for a gas station, which comprises an adsorption tank, a vacuum pump and a buried storage tank; The bottom of the vacuum pump is also connected to the two vacuum branch pipelines of the vacuum pumping pipeline, and the vacuum pumping pipeline is connected to the vacuum pump. One end of the regeneration gas pipeline in the underground storage tank is also connected with the gas distributor, and the oil and gas discharge pipeline at the top of the buried storage tank is also connected with the intake pipeline. The beneficial effects of the invention are that the structure is simple, the cost is low, and the oil and gas undergoes multiple cycles of adsorption, regeneration, and absorption treatment processes, and the oil and gas recovery efficiency is high; the buried storage tank replaces the absorption tower to complete the absorption process, and does not need to configure lean and rich. The oil pump can greatly reduce the primary investment and reduce the floor space.
Description
技术领域technical field
本发明涉及加油站三次油气回收技术领域，尤其涉及一种加油站三次油气回收装置。The invention relates to the technical field of tertiary oil and gas recovery of gas stations, in particular to a tertiary oil and gas recovery device of gas stations.
背景技术Background technique
汽油在存储、运输过程中不可避免的存在大量油气挥发的问题，挥发的VOCs不仅带来严重的环境污染与资源浪费，还会影响人体健康并造成安全隐患。因此，油气储运过程中的VOCs回收越来越受到重视。During the storage and transportation of gasoline, there is inevitably a large amount of volatilization of oil and gas. The volatilized VOCs not only cause serious environmental pollution and waste of resources, but also affect human health and cause potential safety hazards. Therefore, more and more attention has been paid to the recovery of VOCs in the process of oil and gas storage and transportation.
目前，油气回收技术主要有吸附法、冷凝法、吸收法及膜分离法四种工艺路线。At present, the oil and gas recovery technologies mainly include four process routes: adsorption, condensation, absorption and membrane separation.
其中吸附法(也称吸附-吸收法)具有结构简单、运行能耗低、运行稳定、回收率高等优点，在油库油气回收中得到广泛引用。但该回收技术存在着占地面积大、吸收剂要求高等问题，加油站的占地面积有限，吸附法在加油站油气回收中很难采用。Among them, the adsorption method (also called adsorption-absorption method) has the advantages of simple structure, low energy consumption, stable operation and high recovery rate, and has been widely used in oil and gas recovery in oil depots. However, this recovery technology has the problems of large area and high requirements for absorbents. The area of the gas station is limited, and the adsorption method is difficult to use in the oil and gas recovery of the gas station.
发明内容SUMMARY OF THE INVENTION
为解决当前油气吸附法回收存在的占地面积大、吸收剂要求高等技术问题，本发明公开了一种加油站三次油气回收装置。In order to solve the technical problems of large floor space and high requirements for absorbents in the current oil and gas adsorption method recovery, the invention discloses a tertiary oil and gas recovery device for a gas station.
为实现上述目的，本发明采用下述技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种加油站三次油气回收装置，包括两台并联设置的吸附罐，与两台吸附罐均相连接的真空泵，与真空泵相连接的埋地储罐；两台吸附罐的底部分别与进气管线的两个进气分支管线相连接，两台吸附罐的底部还分别与抽真空管线的两个抽真空分支管线相连接，抽真空管线与真空泵相连接，所述真空泵与埋地储罐的再生气管线上还设置有用于初步散热的散热器，接入埋地储罐内的再生气管线一端还与气体分布器相连接，埋地储罐顶部的油气排放管线还与进气管线相连接。A tertiary oil and gas recovery device for a gas station, comprising two adsorption tanks arranged in parallel, a vacuum pump connected with both adsorption tanks, and a buried storage tank connected with the vacuum pump; the bottoms of the two adsorption tanks are respectively connected with the intake pipeline The two inlet branch lines are connected, the bottoms of the two adsorption tanks are also connected with the two vacuum branch lines of the vacuum line respectively, the vacuum line is connected with the vacuum pump, and the vacuum pump is connected with the regeneration of the buried storage tank. The gas pipeline is also provided with a radiator for preliminary heat dissipation, one end of the regeneration gas pipeline connected to the buried storage tank is also connected to the gas distributor, and the oil and gas discharge pipeline at the top of the buried storage tank is also connected to the intake pipeline.
作为本发明的进一步优选，两台所述吸附罐不间断交替运行，其中一台吸附罐处于吸附状态时，另一台吸附罐处于再生状态。As a further preference of the present invention, the two adsorption tanks run alternately without interruption, and when one adsorption tank is in the adsorption state, the other adsorption tank is in the regeneration state.
作为本发明的进一步优选，两台所述吸附罐的顶部均与排气管线相连接，排气管线上还安装有排气阀门和吹扫阀门。As a further preference of the present invention, the tops of the two adsorption tanks are connected to the exhaust line, and an exhaust valve and a purge valve are also installed on the exhaust line.
作为本发明的进一步优选，两台所述吸附罐中均装有油气回收用活性炭。As a further preference of the present invention, the two adsorption tanks are equipped with activated carbon for oil and gas recovery.
作为本发明的进一步优选，在两个进气分支管线、两个抽真空分支管线上均设有电控阀门。As a further preference of the present invention, electronically controlled valves are provided on the two intake branch lines and the two vacuum branch lines.
作为本发明的进一步优选，所述真空泵采用涡旋式真空泵，对吸附罐进行抽真空实现高浓度油气再生过程。As a further preference of the present invention, a scroll vacuum pump is used as the vacuum pump, and the adsorption tank is evacuated to realize the high-concentration oil and gas regeneration process.
作为本发明的进一步优选，所述气体分布器浸没于所述埋地储罐中油面以下。As a further preference of the present invention, the gas distributor is submerged below the oil level in the buried storage tank.
本发明的有益效果是，The beneficial effect of the present invention is,
1、利用加油站的埋地储罐替代常规吸附法油气回收装置的吸收塔来完成吸收环节，且无需配置贫、富油泵，可极大地降低一次投资及减少占地面积。1. Use the buried storage tank of the gas station to replace the absorption tower of the conventional adsorption method oil and gas recovery device to complete the absorption process, and there is no need to configure the lean and rich oil pump, which can greatly reduce the primary investment and reduce the floor space.
2、利用涡旋式真空泵替代螺杆式真空泵，降低真空泵成本。2. Use the scroll vacuum pump to replace the screw vacuum pump to reduce the cost of the vacuum pump.
3、回收装置的结构简单、成本低，油气经多次循环的吸附、再生、吸收处理过程，油气回收效率高。3. The structure of the recovery device is simple and the cost is low. The oil and gas undergoes multiple cycles of adsorption, regeneration and absorption treatment, and the oil and gas recovery efficiency is high.
附图说明Description of drawings
图1为本发明中的油气回收装置结构示意图；Fig. 1 is the structural representation of oil and gas recovery device in the present invention;
图2为本发明中的油气回收系统结构示意图。FIG. 2 is a schematic structural diagram of the oil and gas recovery system in the present invention.
其中，1-吸附罐；2-真空泵；3-散热器；4-埋地储罐；5-气体分布器；6-电控阀门；7-吹扫阀门；8-进气口；9-排放口；10-油气回收装置；11-高标号埋地罐；12-低标号埋地罐；13-进气管线；14-再生气管线；15-尾气排放管线；16-油气排放管线；17-上位机；18-电缆。Among them, 1-adsorption tank; 2-vacuum pump; 3-radiator; 4-buried storage tank; 5-gas distributor; 6-electrically controlled valve; 7-purging valve; 8-air inlet; 9-discharge port; 10- oil and gas recovery device; 11- high-grade buried tank; 12- low-grade buried tank; 13- intake pipeline; 14- regeneration gas pipeline; 15- exhaust gas discharge pipeline; 16- oil and gas discharge pipeline; 17- Host computer; 18-cable.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
如图1所示，一种加油站三次油气回收装置10，包括两台并联设置的吸附罐1，与两台吸附罐1均相连接的真空泵2，与真空泵2相连接的埋地储罐4；两台吸附罐1的底部分别与进气管线13的两个进气分支管线相连接，两台吸附罐1的底部还分别与抽真空管线的两个抽真空分支管线相连接，抽真空管线与真空泵2相连接，上述真空泵2与埋地储罐4的再生气管线14上还设置有用于初步散热的散热器3，接入埋地储罐4内的再生气管线14一端还与气体分布器5相连接，埋地储罐4顶部的油气排放管线16还与进气管线13相连接；其中，埋地储罐4中的气体分布器5在安装时，需要对埋地储罐4的人孔处进行改造，将气体分布器5从人孔放入埋地储罐4中，气体经气体分布器5分散至埋地储罐4油面以下，完成吸收油气回收环节。As shown in FIG. 1 , a tertiary oil and gas recovery device 10 in a gas station includes two adsorption tanks 1 arranged in parallel, a vacuum pump 2 connected with both adsorption tanks 1, and a buried storage tank 4 connected with the vacuum pump 2 The bottoms of two adsorption tanks 1 are respectively connected with the two intake branch lines of the intake lines 13, and the bottoms of the two adsorption tanks 1 are also respectively connected with the two vacuum branch lines of the vacuum lines, and the vacuum lines Connected with the vacuum pump 2, the above-mentioned vacuum pump 2 and the regeneration gas pipeline 14 of the buried storage tank 4 are also provided with a radiator 3 for preliminary heat dissipation, and one end of the regeneration gas pipeline 14 connected to the buried storage tank 4 is also connected to the gas distribution. The gas distributor 5 is connected with the gas distributor 5, and the oil and gas discharge line 16 at the top of the buried storage tank 4 is also connected with the intake line 13; wherein, when the gas distributor 5 in the buried storage tank 4 is installed, it is necessary to The manhole is transformed, and the gas distributor 5 is put into the buried storage tank 4 from the manhole, and the gas is dispersed to below the oil level of the buried storage tank 4 through the gas distributor 5 to complete the absorption and recovery of oil and gas.
特别的，两台上述吸附罐1不间断交替运行，其中一台吸附罐1处于吸附状态时，另一台吸附罐1处于再生状态。In particular, the two above-mentioned adsorption tanks 1 run alternately without interruption, and when one adsorption tank 1 is in the adsorption state, the other adsorption tank 1 is in the regeneration state.
特别的，两台上述吸附罐1的顶部均与排气管线相连接，排气管线上还安装有排气阀门和吹扫阀门7，排气阀门和吹扫阀门7用于对吸附罐1进行清理。In particular, the tops of the two above-mentioned adsorption tanks 1 are connected with an exhaust line, and an exhaust valve and a purge valve 7 are also installed on the exhaust line. clean up.
特别的，两台上述吸附罐1中均装有油气回收用活性炭，对油气中VOCs进行吸收，活性炭具有选择吸附性，能将汽油中的烃类组分吸附至活性炭表面，而空气组分则会穿过活性炭经吸附罐1顶部的尾气排放管线15的排放口9达标排放。In particular, the two above-mentioned adsorption tanks 1 are equipped with activated carbon for oil and gas recovery to absorb VOCs in oil and gas. The activated carbon has selective adsorption properties and can adsorb hydrocarbon components in gasoline to the surface of activated carbon, while air components are It will pass through the activated carbon through the exhaust port 9 of the exhaust gas discharge line 15 at the top of the adsorption tank 1 to reach the standard discharge.
特别的，在两个进气分支管线、两个抽真空分支管线上均设有电控阀门6，进气分支管线上的电控阀门6用于控制油气吸附过程的开启和关闭，抽真空分支管线上的电控阀门6用于控制油气再生过程的开启和关闭。In particular, electronically controlled valves 6 are provided on the two intake branch pipelines and the two vacuum branch pipelines. The electronically controlled valves 6 on the intake branch pipelines are used to control the opening and closing of the oil and gas adsorption process. The electric control valve 6 on the pipeline is used to control the opening and closing of the oil and gas regeneration process.
特别的，上述真空泵2采用涡旋式真空泵2，替代常规吸附法油气回收装置10中的螺杆式真空泵2，对吸附罐1进行抽真空实现高浓度油气再生过程，大大降低真空泵2成本。In particular, the above-mentioned vacuum pump 2 adopts a scroll-type vacuum pump 2 to replace the screw-type vacuum pump 2 in the conventional adsorption method oil and gas recovery device 10, and vacuumizes the adsorption tank 1 to realize the high-concentration oil and gas regeneration process, which greatly reduces the cost of the vacuum pump 2.
特别的，上述气体分布器5浸没于上述埋地储罐4中油面以下，油气通过鼓泡方式被汽油吸收。In particular, the gas distributor 5 is submerged below the oil level in the buried storage tank 4, and the oil and gas are absorbed by the gasoline through bubbling.
本发明中，油气净进气管线13上的进气口8进入回收装置，在回收装置中首先经过吸附罐1中的活性炭进行吸附，待其中一个吸附罐1中吸附饱和后关闭相应的进气分支管线上的电控阀门6，启动真空泵2对该吸附罐1进行抽真空实现油气再生，进气管线13上安装流量计，可对进入活性炭床层的油气体积进行累计计算，油气累计至设定值时，通过电控阀门6进行切换，另一个吸附罐1开始进行吸附，再生时，涡旋真空泵2启动对吸附罐1进行抽真空，当吸附罐1的压力下降时，活性炭的吸附能力减弱，可以将活性炭上吸附的烃类组分从活性炭上脱附下来，可实现活性炭的重复利用；两个吸附罐1不间断交替进行吸附、再生过程，再生出的高浓度油气先经过散热器3进行降温，再送入加油站埋地储罐4，经气体分布器5分散后被埋地储罐4中的汽油吸收，而未被吸收的油气则再次经油气排放管线16进入油气回收装置10，再次循环进行吸附、再生和吸收过程。In the present invention, the air inlet 8 on the oil and gas clean air inlet line 13 enters the recovery device, and in the recovery device, it is first adsorbed by the activated carbon in the adsorption tank 1, and the corresponding air intake is closed after the adsorption in one of the adsorption tanks 1 is saturated. The electronically controlled valve 6 on the branch pipeline starts the vacuum pump 2 to evacuate the adsorption tank 1 to achieve oil and gas regeneration. A flow meter is installed on the intake pipeline 13, which can calculate the cumulative volume of oil and gas entering the activated carbon bed. When the value is fixed, the electronically controlled valve 6 is switched, and another adsorption tank 1 starts to adsorb. During regeneration, the vortex vacuum pump 2 starts to vacuumize the adsorption tank 1. When the pressure of the adsorption tank 1 drops, the adsorption capacity of the activated carbon is reduced. If the activated carbon is weakened, the hydrocarbon components adsorbed on the activated carbon can be desorbed from the activated carbon, and the activated carbon can be reused; the two adsorption tanks 1 are continuously alternated for the adsorption and regeneration process, and the regenerated high-concentration oil and gas first pass through the radiator 3. Cooling is carried out, and then sent to the buried storage tank 4 of the gas station. After being dispersed by the gas distributor 5, it is absorbed by the gasoline in the buried storage tank 4, and the unabsorbed oil and gas enters the oil and gas recovery device 10 through the oil and gas discharge line 16 again. , and cycle again for adsorption, regeneration and absorption.
本发明还公开了一种加油站三次油气回收系统，将上述回收装置进气管线13的一端与高标号埋地罐11相连接，再生气管线14与低标号埋地罐12相连接，高标号埋地罐11、低标号埋地罐12均与油气排放管线16相连接，当设备出现异常时油气从油气排放管线16排出，避免地埋罐憋压造成安全隐患；油气回收处理后，达标的气体经尾气排放管线15排空，回收装置还通过电缆18与上位机17实现通讯连接，上位机17可以监控及操作回收装置。The invention also discloses a tertiary oil and gas recovery system for a gas station. One end of the air inlet pipeline 13 of the recovery device is connected to the high-grade buried tank 11, and the regeneration gas pipeline 14 is connected to the low-grade buried tank 12. The buried tank 11 and the low-grade buried tank 12 are all connected with the oil and gas discharge pipeline 16. When the equipment is abnormal, the oil and gas are discharged from the oil and gas discharge pipeline 16, so as to avoid the hidden pressure of the buried tank and cause potential safety hazards; The gas is evacuated through the tail gas discharge line 15, and the recovery device is also connected to the upper computer 17 through a cable 18 for communication, and the upper computer 17 can monitor and operate the recovery device.
特别的，在上述进气管线13上还安装有流量计、微压传感器和控制阀等各种检测仪表，该油气回收系统通过PCL实现自动控制，当压力达到设定值时控制阀开启，油气进入回收装置，当压力低于设定值时，控制阀关闭。In particular, various detection instruments such as flow meters, micro-pressure sensors and control valves are also installed on the above-mentioned intake line 13. The oil and gas recovery system is automatically controlled by PCL. When the pressure reaches the set value, the control valve is opened, and the oil and gas Enter the recovery device, when the pressure is lower than the set value, the control valve is closed.
另外，该系统中还设计了数个工艺报警器，当出现故障时，上位机17可以通过声光报警提示操作人员。In addition, several process alarms are also designed in the system. When a fault occurs, the upper computer 17 can prompt the operator through sound and light alarms.
在常规吸附法油气回收装置10中，有两台交替运行的吸附罐1，一台或一组螺杆真空泵2，两台管道泵以及一台吸收塔组成。油气经过收集后首先进入吸附罐1中，两台吸附罐1交替运行，一台处于吸附状态，另一台处于再生或等待状态。当其中一台吸附罐1吸附饱和时，切换到另一台吸附罐1进行吸附，同时启动真空泵2对吸附饱和的吸附罐1进行抽真空再生处理，将油气从吸附材料中再生出来再送入后续吸收塔中进行吸收；吸收塔还需要经两台管道泵连接吸收油储罐，其中贫油泵将吸收油送入塔顶对再生的油气进行吸收，吸收后的富油经富油泵送回储罐。In the conventional adsorption method oil and gas recovery device 10, there are two adsorption tanks 1 operating alternately, one or a group of screw vacuum pumps 2, two pipeline pumps and one absorption tower. After the oil and gas is collected, it first enters the adsorption tank 1, and the two adsorption tanks 1 operate alternately, one is in the adsorption state, and the other is in the regeneration or waiting state. When one of the adsorption tanks 1 is saturated with adsorption, switch to the other adsorption tank 1 for adsorption, and simultaneously start the vacuum pump 2 to perform vacuum regeneration treatment on the adsorption tank 1 saturated with adsorption, and regenerate the oil and gas from the adsorption material and send it to the subsequent Absorption is carried out in the absorption tower; the absorption tower also needs to be connected to the absorption oil storage tank by two pipeline pumps, in which the lean oil pump sends the absorption oil to the top of the tower to absorb the regenerated oil and gas, and the absorbed rich oil is sent back to the storage tank by the rich oil pump .
本发明与常规吸附法油气回收相比，本发明利用加油站的埋地储罐4替代常规吸附法油气回收装置10的吸收塔来完成吸收环节，且无需配置贫、富油泵，设备投资少，占地面积也可大大降低。Compared with the conventional adsorption method oil and gas recovery, the present invention uses the buried storage tank 4 of the gas station to replace the absorption tower of the conventional adsorption method oil and gas recovery device 10 to complete the absorption link, and does not need to configure the lean and rich oil pumps, and the equipment investment is low. The footprint can also be greatly reduced.
当然，上述说明并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换，也应属于本发明的保护范围。Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present invention should also belong to the present invention. The scope of protection of the invention.
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