Oil gas recovery device combining mechanical refrigeration and condensation recovery

Abstract

The utility model relates to an oil gas recovery device combining mechanical refrigeration and condensation recovery, which comprises a mechanical refrigeration device (1), an activated carbon adsorption tank (3), an exhaust funnel (4) and a condensation recovery device (2), oil gas is connected with an inlet of the mechanical refrigeration device (1), and an outlet of the mechanical refrigeration device (1) is connected with an inlet of the condensation recovery device (2) through a first gas conveying pipeline (5). An outlet of the condensation recovery device (2) is connected with an inlet of the activated carbon adsorption tank (3) through a second gas conveying pipeline (6), an outlet of the activated carbon adsorption tank (3) is connected with the exhaust cylinder (4) through a third gas conveying pipeline (7), and an outlet of the mechanical refrigeration device (1) is further connected with an inlet of the activated carbon adsorption tank (3) through a fourth gas conveying pipeline (8). And the outlet of the condensation recovery device (2) is also connected with the exhaust funnel (4) through a fifth gas conveying pipeline (9). The oil gas recovery efficiency can be greatly improved, and economic and environment-friendly benefits are remarkable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil gas recycling technical field relates to a kind of oil gas recovery device, especially, it is a kind of mechanical refrigeration and condensation recovery combined oil gas recovery device. BACKGROUND

[0002] Oil gas recovery device is used to recycle oil gas, both can realize oil gas pollution control and can produce considerable economic benefits.Condensation method oil gas recovery is a kind of recovery mode that can realize waste gas resourceization directly.But, traditional condensation oil gas recovery technology is all mechanical condensation method, because it is limited to refrigeration temperature, it is difficult to meet the increasingly stringent emission standards.Therefore, traditional oil gas recovery device needs to be upgraded. UTILITY MODEL CONTENT

[0003] The utility model aims at overcoming the shortcoming in prior art, provide a kind of mechanical refrigeration and condensation recovery combined oil gas recovery device, its design modification to traditional oil gas recovery device, make it combine with condensation recovery device, can greatly improve oil gas recovery efficiency, and economic and environmental protection benefit is remarkable.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A kind of mechanical refrigeration and condensation recovery combined oil gas recovery device, it includes mechanical refrigeration device, activated carbon adsorption tank and exhaust cylinder, it is characterized by further including condensation recovery device, oil gas and the import of the mechanical refrigeration device are connected, the outlet of the mechanical refrigeration device is connected with the import of the condensation recovery device by first gas conveying pipeline, the outlet of the condensation recovery device is connected with the import of the activated carbon adsorption tank by second gas conveying pipeline, the outlet of the activated carbon adsorption tank is connected with the exhaust cylinder by third gas conveying pipeline, the outlet of the mechanical refrigeration device is also connected with the import of the activated carbon adsorption tank by fourth gas conveying pipeline, the outlet of the condensation recovery device is also connected with the exhaust cylinder by fifth gas conveying pipeline.

[0006] Preferably, the condensing recovery device comprises a primary heat exchanger, a secondary heat exchanger, a tail gas reheater and a booster fan, the hot side inlet of the primary heat exchanger is connected with the outlet of the mechanical refrigeration device through the first gas conveying pipeline, the hot side outlet of the primary heat exchanger is connected with the hot side inlet of the secondary heat exchanger, the cold side inlet of the primary heat exchanger is connected with the hot side outlet of the secondary heat exchanger, the cold side outlet of the primary heat exchanger is connected with the inlet of the tail gas reheater, the outlet of the tail gas reheater is connected with the inlet of the booster fan, the outlet of the booster fan is connected with the inlet of the activated carbon adsorption tank through the second gas conveying pipeline, the cold side inlet of the secondary heat exchanger is connected with a liquid nitrogen conveying pipeline, the cold side outlet of the secondary heat exchanger is connected with a nitrogen discharge pipeline, and the condensate discharge ports of the primary heat exchanger and the secondary heat exchanger are both connected with a first liquid outlet pipeline for condensate recovery.

[0007] Preferably, a first pneumatic cut-off valve is arranged on the first gas conveying pipeline, and a second pneumatic cut-off valve is arranged on the fourth gas conveying pipeline.

[0008] Preferably, a liquid nitrogen regulating valve is arranged on the liquid nitrogen conveying pipeline connected with the cold side inlet of the secondary heat exchanger.

[0009] Preferably, a first temperature transmitter and a first pressure transmitter are further arranged on the first gas conveying pipeline.

[0010] Preferably, a second temperature transmitter and a second pressure transmitter are arranged between the hot side outlet of the secondary heat exchanger and the cold side inlet of the primary heat exchanger.

[0011] Preferably, a third temperature transmitter and a third pressure transmitter are arranged between the outlet of the tail gas reheater and the inlet of the booster fan.

[0012] Preferably, the outer sides of the primary heat exchanger and the secondary heat exchanger are both provided with cold insulation layers.

[0013] Preferably, the outer side of the tail gas reheater is provided with a heat insulation layer.

[0014] Preferably, there are two activated carbon adsorption tanks, and the two activated carbon adsorption tanks are connected in parallel.

[0015] Compared with the prior art, the oil gas recovery device combining mechanical refrigeration and condensing recovery has one or more of the following beneficial technical effects:

[0016] 1、The oil gas recovery device is upgraded and modified on the basis of the traditional oil gas recovery device, a liquid nitrogen condensing treatment process is connected in series at the rear end of the traditional mechanical refrigeration and condensing process, and the refrigeration temperature can be as low as-180 DEG C.

[0017] 2、The utility model discloses can solve the problem that traditional oil gas recovery device condensing temperature is limited, greatly improves oil gas recovery efficiency, improves the economic benefit of enterprise.

[0018] 3、The utility model discloses set up switching route, can switch through pneumatic cut -out valve according to enterprise production needs, select directly using traditional technology or upgrading process after the process, overall design is reasonable, easy operation is convenient, and it is convenient for marketization to promote application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the mechanical refrigeration and condensation recovery combination's oil gas recovery device's structure schematic diagram of the utility model.

[0020] In the drawing: 1 - mechanical refrigeration device, 2 - condensation recovery device, 21 - first condenser, 22 - second condenser, 23 - tail gas temperature restorer, 24 - booster fan, 25 - second temperature transmitter, 26 - second pressure transmitter, 27 - third temperature transmitter, 28 - third pressure transmitter, 29 - liquid nitrogen regulating valve, 3 - activated carbon adsorption tank, 4 - exhaust cylinder, 5 - first gas conveying pipeline, 6 - second gas conveying pipeline, 7 - third gas conveying pipeline, 8 - fourth gas conveying pipeline, 9 - fifth gas conveying pipeline, 10 - first liquid outlet pipeline, 11 - first pneumatic cut -out valve, 12 - second pneumatic cut -out valve, 13 - first temperature transmitter, 14 - first pressure transmitter. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without creative labor belong to the scope of the protection of the utility model.

[0023] The utility model relates to a kind of mechanical refrigeration and condensation recovery combination's oil gas recovery device, through the upgrading of traditional oil gas recovery device, make it combine with condensation recovery device, can greatly improve oil gas recovery efficiency, and economic and environmental protection benefit is remarkable.

[0024] Figure 1The utility model discloses a mechanical refrigeration and condensation recovery combined oil gas recovery device's structure schematic diagram is shown. Figure 1 As shown, similar to prior art, the utility model discloses a mechanical refrigeration and condensation recovery combined oil gas recovery device includes mechanical refrigeration device 1, activated carbon adsorption jar 3 and exhaust cylinder 4. Among them, the mechanical refrigeration device 1 is used to condense oil gas to facilitate the recycling of oil gas. The activated carbon adsorption jar 3 is used to adsorb the condensed exhaust gas to facilitate the emission of tail gas. The exhaust cylinder 4 is used to discharge the tail gas up to standard.

[0025] Different from prior art, the utility model discloses a mechanical refrigeration and condensation recovery combined oil gas recovery device also includes condensation recovery device 2. Among them, oil gas and the import of mechanical refrigeration device 1 are connected, and the oil gas is preliminarily refrigerated by mechanical refrigeration device 1. The outlet of mechanical refrigeration device 1 is connected with the import of condensation recovery device 2 through first gas conveying pipeline 5, and the oil gas after preliminary refrigeration is condensed and recovered again by condensation recovery device 2. The outlet of condensation recovery device 2 is connected with the import of activated carbon adsorption jar 3 through second gas conveying pipeline 6, and the condensed exhaust gas is adsorbed by activated carbon adsorption jar 3. The outlet of activated carbon adsorption jar 3 is connected with exhaust cylinder 4 through third gas conveying pipeline 7, and the tail gas up to standard is discharged by exhaust cylinder 4.

[0026] Therefore, the utility model discloses a traditional oil gas recovery device through the upgrading and reconstruction, and after traditional mechanical refrigeration condensation process, liquid nitrogen condensation treatment process is connected in series, refrigeration temperature can be as low as-180 DEG C, can solve the problem that the condensation temperature of traditional oil gas recovery device is limited, and the oil gas recovery efficiency is improved greatly, and the economic benefit of enterprise is improved.

[0027] In addition, in the utility model, the outlet of mechanical refrigeration device 1 is also connected with the import of activated carbon adsorption jar 3 through fourth gas conveying pipeline 8. The outlet of condensation recovery device 2 is also connected with exhaust cylinder 4 through fifth gas conveying pipeline 9. And, first gas conveying pipeline 5 is provided with first pneumatic cut-off valve 11, and fourth gas conveying pipeline 8 is provided with second pneumatic cut-off valve 12.

[0028] Therefore, the utility model discloses a switching route by setting, can switch through pneumatic cut-off valve according to enterprise production needs, selects directly using traditional process or upgrading and reconstruction process, and the overall design is reasonable, and the operation is simple and convenient, and the marketization popularization and application are convenient.

[0029] In the utility model, the condensing recovery device 2 includes primary heat exchanger 21, secondary heat exchanger 22, tail gas temperature restorer 23 and booster fan 24. Among them, the hot side import of primary heat exchanger 21 is connected with the outlet of mechanical refrigeration device 2 through first gas conveying pipeline 5. The hot side outlet of primary heat exchanger 21 is connected with the hot side import of secondary heat exchanger 22. The cold side import of primary heat exchanger 21 is connected with the hot side outlet of secondary heat exchanger 22. The cold side outlet of primary heat exchanger 21 is connected with the import of tail gas temperature restorer 23. The outlet of tail gas temperature restorer 23 is connected with the import of booster fan 24. The outlet of booster fan 24 is connected with the import of activated carbon adsorption tank 3 through second gas conveying pipeline 6. The cold side import of secondary heat exchanger 22 is connected with liquid nitrogen conveying pipeline. The cold side outlet of secondary heat exchanger 22 is connected with nitrogen discharge pipeline. The condensate discharge of primary heat exchanger 21 and secondary heat exchanger 22 all carries out condensate recovery through first liquid outlet pipeline 10.

[0030] Therefore, the utility model discloses a liquid nitrogen condensing treatment process, solves the problem that the condensing temperature of traditional oil gas recovery device is limited, and refrigeration temperature can be as low as-180 DEG C, which greatly improves recovery efficiency.

[0031] Preferably, the liquid nitrogen conveying pipeline connected with the cold side import of secondary heat exchanger 22 is provided with liquid nitrogen regulating valve 29. And, the second temperature transmitter 25 and second pressure transmitter 26 are arranged between the hot side outlet of secondary heat exchanger 22 and the cold side import of primary heat exchanger 21.

[0032] Therefore, the utility model can adjust liquid nitrogen regulating valve 29 according to the result of second temperature transmitter 25 and second pressure transmitter 26, so as to guarantee liquid nitrogen condensing treatment effect.

[0033] More preferably, first temperature transmitter 13 and first pressure transmitter 14 are further arranged on first gas conveying pipeline 5.

[0034] Therefore, the utility model can show the temperature and pressure of oil gas through first temperature transmitter 13 and first pressure transmitter 14.

[0035] Still preferably, third temperature transmitter 27 and third pressure transmitter 28 are arranged between the outlet of tail gas temperature restorer 23 and the import of booster fan 24.

[0036] Therefore, the utility model can adjust tail gas temperature restorer 23 according to the result of third temperature transmitter 27 and third pressure transmitter 28, so as to guarantee the output temperature and pressure of tail gas.

[0037] In addition, in the utility model, preferably, the outer side of the first heat exchanger 21 and the second heat exchanger 22 is provided with cold insulation layer, can avoid condensing system operation in the loss of cold quantity.

[0038] More preferably, the outer side of the tail gas reheater 23 is provided with heat preservation layer, can avoid the heat loss in the operation of tail gas reheater.

[0039] Still preferably, there are two active carbon adsorption tanks 3, and the two active carbon adsorption tanks 3 are connected in parallel, so that the adsorption effect on tail gas can be ensured.

[0040] Moreover, in the utility model, the material of the first heat exchanger 21 and the second heat exchanger 22 is SS304. The oil gas reheater 23 is water bath electric heating mode, and the material is Q235+SS304 material. The booster fan 24 is Roots blower.

[0041] The working process of the oil gas recovery device combining mechanical refrigeration and condensing recovery is as follows: the oil gas comes into the mechanical refrigeration device 1, is preliminarily condensed, and then enters the condensing recovery device 2 through the first gas conveying pipeline 5. The preliminary condensation of the oil gas can be switched through the first pneumatic cut-off valve 11 and the second pneumatic cut-off valve 12, so that the oil gas enters the active carbon adsorption tank 3 through the fourth gas conveying pipeline 8, and the tail gas is discharged into the high altitude through the exhaust cylinder 4 after treatment.

[0042] After the preliminary condensation of the oil gas, the oil gas enters the condensing recovery device 2, first enters the hot side inlet of the first heat exchanger 21, enters the hot side outlet of the first heat exchanger 21, enters the hot side inlet of the second heat exchanger 22, and then enters the cold side inlet of the first heat exchanger 21 through the hot side outlet of the second heat exchanger 22. After recovering part of the cold quantity, the oil gas enters the tail gas reheater 23 through the cold side outlet of the first heat exchanger 21, and the reheated tail gas enters the active carbon adsorption tank 3 through the second gas conveying pipeline 6 by the booster fan 24. The gas can be directly discharged into the high altitude through the fifth gas conveying pipeline 9 by switching the manual valve.

[0043] The cold side inlet of the second heat exchanger 22 in the condensing recovery device 2 is connected with the liquid nitrogen conveying pipeline to introduce liquid nitrogen, and the cold side outlet of the second heat exchanger 22 is connected with the nitrogen discharge pipeline to discharge the heated nitrogen.

[0044] The condensate discharge ports of the first heat exchanger 21 and the second heat exchanger 22 in the condensing recovery device 2 are connected with the first liquid outlet pipeline 10 to recover the condensate.

[0045] The above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, all the embodiments cannot be exhausted. Any obvious changes or variations derived from the technical scheme of the utility model still fall within the protection scope of the utility model.

Claims

1. An oil gas recovery device combining mechanical refrigeration and condensation recovery, comprising a mechanical refrigeration device (1), an activated carbon adsorption tank (3) and an exhaust cylinder (4), characterized in that, The condensing recovery device (2) is connected with the outlet of the mechanical refrigeration device (1) through the first gas conveying pipeline (5), and the outlet of the condensing recovery device (2) is connected with the inlet of the activated carbon adsorption tank (3) through the second gas conveying pipeline (6).

2. The oil gas recovery device combined mechanical refrigeration and condensation recovery according to claim 1, characterized in that, The condensing recovery device (2) comprises a first heat exchanger (21), a second heat exchanger (22), a tail gas reheater (23) and a booster fan (24), the hot side inlet of the first heat exchanger (21) is connected with the outlet of the mechanical refrigeration device (1) through the first gas conveying pipeline (5), the hot side outlet of the first heat exchanger (21) is connected with the hot side inlet of the second heat exchanger (22), the cold side inlet of the first heat exchanger (21) is connected with the hot side outlet of the second heat exchanger (22), the cold side outlet of the first heat exchanger (21) is connected with the inlet of the tail gas reheater (23), the outlet of the tail gas reheater (23) is connected with the inlet of the booster fan (24), the outlet of the booster fan (24) is connected with the inlet of the activated carbon adsorption tank (3) through the second gas conveying pipeline (6), the cold side inlet of the second heat exchanger (22) is connected with a liquid nitrogen conveying pipeline, the cold side outlet of the second heat exchanger (22) is connected with a nitrogen discharge pipeline, and the condensate discharge ports of the first heat exchanger (21) and the second heat exchanger (22) are connected with a first liquid outlet pipeline (10) for condensate recovery.

3. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to claim 2, characterized in that, The first gas conveying pipeline (5) is provided with a first pneumatic cut-off valve (11), and the fourth gas conveying pipeline (8) is provided with a second pneumatic cut-off valve (12).

4. The oil gas recovery device combined mechanical refrigeration and condensation recovery according to claim 3, characterized in that, The liquid nitrogen conveying pipeline connected with the cold side inlet of the second heat exchanger (22) is provided with a liquid nitrogen regulating valve (29).

5. The mechanical refrigeration and condensation recovery combined oil gas recovery device according to claim 4, characterized in that, The first gas conveying pipeline (5) is further provided with a first temperature transmitter (13) and a first pressure transmitter (14).

6. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to claim 5, characterized in that, The second temperature transmitter (25) and the second pressure transmitter (26) are arranged between the hot side outlet of the second heat exchanger (22) and the cold side inlet of the first heat exchanger (21).

7. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to claim 6, characterized in that, The third temperature transmitter (27) and the third pressure transmitter (28) are arranged between the outlet of the tail gas reheater (23) and the inlet of the booster fan (24).

8. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to claim 7, characterized in that, The first heat exchanger (21) and the second heat exchanger (22) are both provided with a cold insulation layer.

9. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to claim 8, characterized in that, The tail gas reheater (23) is provided with a heat insulation layer.

10. The mechanical refrigeration and condensation recovery combined oil vapor recovery device according to any one of claims 1-9, characterized in that, There are two activated carbon adsorption tanks (3), and the two activated carbon adsorption tanks (3) are connected in parallel.

Images