阅读说明：本技术 用于搭载于使用内燃机作为动力的车辆的co2分离系统 (CO for mounting on vehicle using internal combustion engine as power2Separation system ) 是由 杉山宏石 于 2019-05-13 设计创作，主要内容包括：提供一种能够将使用内燃机作为动力的车辆的排气中的CO_2以比排气高的浓度分离的CO_2分离系统。本公开的CO_2分离系统在(A)内燃机正在工作且车辆正在行驶时,进行如下的第1模式：经由第1CO_2供给侧导入流路而向CO_2分离装置的CO_2供给侧导入从内燃机产生的排气,且利用行驶风从车辆的外部经由第1CO_2透过侧导入流路而向第1CO_2分离装置的CO_2透过侧导入空气,由此,以第1CO_2分离装置的CO_2供给侧与CO_2透过侧的CO_2的分压的差为驱动力,利用第1CO_2分离装置的CO_2透过膜使排气中的CO_2从第1CO_2分离装置的CO_2供给侧向CO_2透过侧透过。(Provided is a method for generating CO in exhaust gas of a vehicle using an internal combustion engine as power 2 CO separated at a higher concentration than exhaust gas 2 A separation system. CO of the present disclosure 2 The separation system performs the following mode 1 when (a) the internal combustion engine is operating and the vehicle is running: via the 1 st CO 2 The supply side leads into the flow path to the CO 2 CO of separation plant 2 Supply-side lead-in from internal combustion engineGenerated exhaust gas and passing through the 1 st CO from the outside of the vehicle by the traveling wind 2 Introducing the flow path to the 1 st CO through the side 2 CO of separation plant 2 Introducing air through the side to thereby form 1CO 2 CO of separation plant 2 Supply side with CO 2 CO at the permeate side 2 Using the difference of partial pressures of (1) CO as a driving force 2 CO of separation plant 2 CO in exhaust gas is permeated through membrane 2 From 1 st CO 2 CO of separation plant 2 Supply side direction CO 2 The transmission side is penetrated.)

1. CO for mounting on vehicle using internal combustion engine as power source₂A separation system, wherein:

an internal combustion engine;

1CO₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

1CO₂A supply side introduction flow path which introduces exhaust gas generated from the internal combustion engine to the 1 st CO₂CO of separation plant₂Leading in from the supply side; and

1CO₂A permeation side introduction flow path from the outside of the vehicle to the 1 st CO₂CO of separation plant₂Air is introduced through the side of the casing,

the CO is₂The separation system performs a first mode as follows when (a) the internal combustion engine is operating and the vehicle is driving:

via the 1 st CO₂A supply side introducing the flow path to the CO₂CO of separation plant₂The supply side introduces exhaust gas generated from the internal combustion engine and passes through the 1 st CO from the outside of the vehicle by traveling wind₂Introducing the flow path to the 1 st CO through the permeation side₂CO of separation plant₂Introducing air through the side to thereby form the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

2. CO according to claim 1₂The separation system is used for separating the liquid from the liquid,

also has the 1 st CO₂CO of separation plant₂A 1 st decompression device for decompressing the permeation side,

the CO is₂The separation system performs the following mode 2 when (B) the internal combustion engine is operating and the vehicle is stopped:

via the 1 st CO₂A supply side introducing flow path to the 1 st CO₂CO of separation plant₂The 1 st decompression device is configured to introduce the exhaust gas generated from the internal combustion engine into the supply side and to decompress the 1 st CO₂CO of separation plant₂Reducing the pressure on the permeation side to thereby obtain the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

3. CO according to claim 1 or 2₂The separation system further includes:

2CO 2₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

2CO 2₂A supply-side introduction flow path that leads from outside of the vehicle to the 2 nd CO₂CO of separation plant₂The supply side introduces air; and

2 nd pressure reducing device for reducing the 2 nd CO₂CO of separation plant₂The permeation side is depressurized,

the CO is₂The separation system performs the following mode 3 when (C) the internal combustion engine is stopped:

from outside of the vehicle via the 2 nd CO₂A supply side introducing flow path to the 2 nd CO₂CO of separation plant₂Introducing air into the supply side and reducing the 2 nd CO by the 2 nd pressure reducing device₂CO of separation plant₂Reducing the pressure on the permeation side, thereby obtaining the 2CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference in partial pressure of the second reaction mixture as a driving force₂CO of separation plant₂CO in the air is permeated through the membrane₂From the 2 nd CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

4. CO according to claim 1₂The separation system further includes:

1 st pressure reducing device for reducing the 1 st CO₂CO of separation plant₂Reducing the pressure at the permeation side;

2CO 2₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

2CO 2₂A supply-side introduction flow path that leads from outside of the vehicle to the 2 nd CO₂CO of separation plant₂The supply side introduces air; and

2 nd pressure reducing device for reducing the 2 nd CO₂CO of separation plant₂The permeation side is depressurized,

the CO is₂The separation system performs the following mode 2 when (B) the internal combustion engine is operating and the vehicle is stopped:

via the 1 st CO₂A supply side introducing flow path to the 1 st CO₂CO of separation plant₂The 1 st decompression device is configured to introduce the exhaust gas generated from the internal combustion engine into the supply side and to decompress the 1 st CO₂CO of separation plant₂Reducing the pressure on the permeation side to thereby obtain the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side is selectively transmitted through the optical fiber,

the CO is₂The separation system performs the following mode 3 when (C) the internal combustion engine is stopped:

from outside of the vehicle via the 2 nd CO₂A supply side introducing flow path to the 2 nd CO₂CO of separation plant₂Introducing air into the supply side and reducing the 2 nd CO by the 2 nd pressure reducing device₂CO of separation plant₂Reducing the pressure on the permeation side, thereby obtaining the 2CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference in partial pressure of the second reaction mixture as a driving force₂CO of separation plant₂CO in the air is permeated through the membrane₂From the 2 nd CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

5. CO according to claim 4₂The separation system is used for separating the liquid from the liquid,

the 1 st CO₂Separation apparatus and the 2 nd CO₂The separation device is a same device, and the separation device is a single device,

the 1 st CO₂A supply side introduction flow path and the 2 nd CO₂The supply-side introduction flow path is the same flow path,

the 1 st and 2 nd pressure reducing devices are the same device.

6. CO according to any of claims 1-5₂The separation system is used for separating the liquid from the liquid,

the vehicle is a hybrid vehicle further including an electric motor, and at least one of the internal combustion engine and the electric motor is switched to be used as power.

Technical Field

The present disclosure relates to CO mounted on a vehicle using an internal combustion engine as power₂A separation system.

Background

It is known to include NO in the exhaust of a vehicle having an internal combustion engine_xCO and CH. These components are usually converted into N by an exhaust gas purification catalyst for purifying exhaust gas generated from an internal combustion engine₂、CO₂And H₂O, etc. and discharged to the outside of the vehicle.

Among the gases discharged to the outside of the vehicle, CO₂It is considered to have a greenhouse effect, and reduction of the discharge amount thereof is required.

Patent document 1 discloses: capturing CO from an exhaust stream of an internal combustion engine₂Temporarily compressing CO, e.g. until discharged at a recovery station in refuelling of vehicles₂Thereby increasing its density.

Further, patent document 2 discloses: separation of water and CO from exhaust gas using a membrane separator₂By reacting CO with₂Conversion to hydrocarbon fuel (hydrocarbon fuel) to reduce CO of vehicle₂And (4) discharging.

Disclosure of Invention

Problems to be solved by the invention

From reducing CO of vehicles₂From the viewpoint of exhaust, in a vehicle using an internal combustion engine as power, it is required to remove CO in exhaust gas₂Efficiently separated and recovered.

In addition, in general, the atmosphere around the lane where many vehicles travel is considered to be CO compared with the atmosphere in other places₂Has a high concentration. Therefore, it is possible to reduce CO in the atmosphere around the lane as well₂The load on the environment can be further reduced.

The present disclosure provides a vehicle capable of using an internal combustion engine as powerCO in the exhaust gas of (2)₂And CO in the atmosphere around the lane₂CO separated efficiently₂A separation system.

Means for solving the problems

The inventors of the present disclosure have found that the above problems can be solved by the following means:

< scheme 1>

CO for mounting on vehicle using internal combustion engine as power source₂A separation system, wherein:

an internal combustion engine;

1CO₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

1CO₂A supply side introduction flow path which introduces exhaust gas generated from the internal combustion engine to the 1 st CO₂CO of separation plant₂Leading in from the supply side; and

1CO₂A permeation side introduction flow path from the outside of the vehicle to the 1 st CO₂CO of separation plant₂Air is introduced through the side of the casing,

the CO is₂The separation system performs the following mode 1 when (a) the internal combustion engine is operating and the vehicle is running:

via the 1 st CO₂A supply side introducing the flow path to the CO₂CO of separation plant₂The supply side introduces exhaust gas generated from the internal combustion engine and passes through the 1 st CO from the outside of the vehicle by traveling wind₂Introducing the flow path to the 1 st CO through the permeation side₂CO of separation plant₂Introducing air through the side to thereby form the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

< scheme 2>

CO according to scheme 1₂The separation system is used for separating the liquid from the liquid,

also has the 1 st CO₂CO of separation plant₂A 1 st decompression device for decompressing the permeation side,

the CO is₂The separation system performs the following mode 2 when (B) the internal combustion engine is operating and the vehicle is stopped:

via the 1 st CO₂A supply side introducing flow path to the 1 st CO₂CO of separation plant₂The 1 st decompression device is configured to introduce the exhaust gas generated from the internal combustion engine into the supply side and to decompress the 1 st CO₂CO of separation plant₂Reducing the pressure on the permeation side to thereby obtain the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

< scheme 3>

CO according to scheme 1 or 2₂The separation system further includes:

2CO 2₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

2CO 2₂A supply-side introduction flow path that leads from outside of the vehicle to the 2 nd CO₂CO of separation plant₂The supply side introduces air; and

2 nd pressure reducing device for reducing the 2 nd CO₂CO of separation plant₂The permeation side is depressurized,

the CO is₂The separation system performs the following mode 3 when (C) the internal combustion engine is stopped:

from outside of the vehicle via the 2 nd CO₂A supply side introducing flow path to the 2 nd CO₂CO of separation plant₂Introducing air into the supply side and reducing the 2 nd CO by the 2 nd pressure reducing device₂CO of separation plant₂Reducing the pressure on the permeation side, thereby obtaining the 2CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference in partial pressure of the second reaction mixture as a driving force₂CO of separation plant₂CO in the air is permeated through the membrane₂From the 2 nd CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

< scheme 4>

CO according to scheme 1₂The separation system further includes:

1 st pressure reducing device for reducing the 1 st CO₂CO of separation plant₂Reducing the pressure at the permeation side;

2CO 2₂A separation device having a device for separating CO₂Supply side with CO₂CO separated by the permeation side₂A permeable membrane;

2CO 2₂A supply-side introduction flow path that leads from outside of the vehicle to the 2 nd CO₂CO of separation plant₂The supply side introduces air; and

2 nd pressure reducing device for reducing the 2 nd CO₂CO of separation plant₂The permeation side is depressurized,

the CO is₂The separation system performs the following mode 2 when (B) the internal combustion engine is operating and the vehicle is stopped:

via the 1 st CO₂A supply side introducing flow path to the 1 st CO₂CO of separation plant₂The 1 st decompression device is configured to introduce the exhaust gas generated from the internal combustion engine into the supply side and to decompress the 1 st CO₂CO of separation plant₂Reducing the pressure on the permeation side to thereby obtain the 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of the first and second reactors as a driving force₂CO of separation plant₂CO in the exhaust gas is caused to permeate through a membrane₂From the 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side is selectively transmitted through the optical fiber,

the CO is₂The separation system performs the following mode 3 when (C) the internal combustion engine is stopped:

from outside of the vehicle via the 2 nd CO₂A supply side introducing flow path to the 2 nd CO₂CO of separation plant₂Introducing air into the supply side and reducing the 2 nd CO by the 2 nd pressure reducing device₂CO of separation plant₂Reducing the pressure on the permeation side, thereby obtaining the 2CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference in partial pressure of the second reaction mixture as a driving force₂CO of separation plant₂CO in the air is permeated through the membrane₂From the 2 nd CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

< scheme 5>

CO according to scheme 4₂The separation system is used for separating the liquid from the liquid,

the 1 st CO₂Separation apparatus and the 2 nd CO₂The separation device is a same device, and the separation device is a single device,

the 1 st CO₂A supply side introduction flow path and the 2 nd CO₂The supply-side introduction flow path is the same flow path,

the 1 st and 2 nd pressure reducing devices are the same device.

< scheme 6>

CO according to any of schemes 1-5₂The separation system is used for separating the liquid from the liquid,

the vehicle further includes an electric motor, and a hybrid vehicle in which at least one of the internal combustion engine and the electric motor is switched to be used as power.

Effects of the invention

According to the present disclosure, it is possible to provide a method of reducing CO in exhaust gas in a vehicle that can use an internal combustion engine as power₂CO separated efficiently₂A separation system.

Drawings

FIG. 1 is a CO of the present disclosure undergoing mode 1₂A schematic diagram of an example of a portion of a separation system.

FIG. 2 is a CO of the present disclosure undergoing mode 2₂A schematic diagram of an example of a portion of a separation system.

FIG. 3 is a CO of the present disclosure undergoing mode 3₂A schematic diagram of an example of a portion of a separation system.

FIG. 4 is a CO of the present disclosure capable of performing mode 1, mode 2, and mode 3₂Schematic diagram of another example of a separation system.

FIG. 5 is a CO of the present disclosure capable of performing mode 1, mode 2, and mode 3₂Schematic diagram of another example of a separation system.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described in detail. The present disclosure is not limited to the following embodiments, and various modifications can be made within the scope of the present disclosure.

《CO₂Separation System

CO of the present disclosure₂The separation system is CO for mounting on a vehicle using an internal combustion engine as a power source₂A separation system. CO of the present disclosure₂The separation system has an internal combustion engine and has a CO separation device₂Supply side with CO₂CO separated by the permeation side₂1 st CO passing through the membrane₂Separation device for converting exhaust gas generated from internal combustion engine to 1 st CO₂CO of separation plant₂1 st CO introduced from the supply side₂A supply side introduction flow path and a 1 st CO from the outside of the vehicle₂CO of separation plant₂1CO introduced through side₂The permeation side leads into the channel.

CO of the present disclosure₂The separation system performs the following mode 1 when (a) the internal combustion engine is operating and the vehicle is running:

via the 1 st CO₂The supply side leads into the flow path to the CO₂CO of separation plant₂The supply side introduces exhaust gas generated from the internal combustion engine and passes through the 1 st CO from the outside of the vehicle by traveling wind₂Introducing the flow path to the 1 st CO through the side₂CO of separation plant₂Air is introduced through the side, therebyIn 1 st CO₂CO of separation plant₂Supply side with CO₂CO at the permeate side₂Using the difference of partial pressures of (1) CO as a driving force₂CO of separation plant₂CO in exhaust gas is permeated through membrane₂From 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

In the present specification, the "traveling wind" means an air flow relatively generated between the vehicle and the outside of the vehicle while the vehicle is traveling.

CO by the present disclosure₂CO separated by separation system₂For example, can be decomposed by plasma and used as C and O₂And discharged.

Furthermore, the separated CO can be recovered₂And as a feedstock for the synthesis of hydrocarbons. The synthesized hydrocarbons can be reused as a fuel for internal combustion engines. As derived from CO₂Method for synthesizing hydrocarbons, e.g. using H produced by electrolysis of water in exhaust gas₂Method for synthesizing hydrocarbons, CO₂A method for synthesizing hydrocarbons by artificial photosynthesis by introducing the hydrocarbons into water together with a reactor.

< mode 1>

CO of the present disclosure₂The split system performs the above-described mode 1 when (a) the internal combustion engine is operating and the vehicle is running.

FIG. 1 is a CO of the present disclosure undergoing mode 1₂A schematic diagram of an example of a portion of a separation system. Although not explicitly shown in fig. 1, the internal combustion engine is operating and the vehicle is traveling.

In fig. 1, the exhaust gas discharged from the internal combustion engine 100 passes through the 1 st CO as indicated by an arrow₂The supply side is introduced into the flow path 410 to the 1 st CO₂CO of separation unit 310₂The supply side 311. Further, as shown by arrows, the air outside 200 of the vehicle passes through the 1 st CO using the traveling wind as motive power₂The permeation side introduction flow path 420 is introduced into the 1 st CO₂CO of separation unit 310₂Through side 312. Thus, in the 1 st CO₂CO of separation unit 310₂Supply side 311 exhaust gas is present and is in CO₂Air is present through side 312.

CO in exhaust gas₂Partial pressure ratio of CO in air₂Has a high partial pressure, and is based on Bernoulli's theorem that CO is present in the traveling wind₂CO at the permeate side₂So that the static pressure of the first reactor is reduced, so that the first reactor is in the 1 st CO₂CO separation unit 310₂Supply side and CO₂CO at the permeate side₂A difference is generated in the partial pressure of (a).

CO in the exhaust gas 10 is driven by the difference in partial pressure₂As indicated by the arrow, via CO₂From CO through the membrane 313₂Supply side 311 towards CO₂The transmission side 312 transmits.

To CO₂CO permeated through the permeate side 312₂As indicated by the arrow, via the 1 st CO₂The transmission side discharge flow path 425 passes through the first CO generation path together with the air₂The outside of the separation device 310. In addition, 1 st CO is introduced₂CO of separation unit 310₂The remaining components of the exhaust gas on the supply side 311 pass through the 1 st CO as indicated by the arrow₂The supply side discharge passage 415 to the 1 st CO₂The outside of the separation device 310.

It is noted that FIG. 1 is not intended to be a CO of the present disclosure₂The separation system is limited to having the 1 st CO₂Supply side discharge channel 415 and 1 st CO₂The permeate-side discharge channel 425.

Thus, in mode 1, by using the 1 st CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂Can be in CO₂CO is permeated through side₂More efficient separation.

< modes 2 and 3>

CO of the present disclosure₂The separation system can further perform the following modes 2 and 3 according to the state of the vehicle.

(mode 2)

CO of the present disclosure₂The disconnect system may also perform mode 2 when (B) the internal combustion engine is operating and the vehicle is at a stop. CO in the present disclosure₂In case of the separation system performing mode 2, the CO of the present disclosure₂The separation system also has a 1 st pressure relief device.

In mode 2 via the 1 st CO₂The supply side is introduced into the flow path to the 1 st CO₂CO of separation plant₂The supply side introduces exhaust gas generated from the internal combustion engine and 1CO is reduced by the 1 st pressure reducing device₂CO of separation plant₂The permeation side is depressurized to thereby obtain 1CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂Using the difference of partial pressures of (1) CO as a driving force₂CO of separation plant₂CO in exhaust gas is permeated through membrane₂From 1 st CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

FIG. 2 is a CO of the present disclosure undergoing mode 2₂A schematic diagram of an example of a portion of a separation system. Although not explicitly shown in fig. 2, the internal combustion engine is operating and the vehicle is stopped.

In fig. 2, the exhaust gas discharged from the internal combustion engine 100 is directed to the 1 st CO as indicated by an arrow₂CO of separation unit 310₂The supply side 311. In addition, 1 st CO₂CO of separation unit 310₂The transmission side 312 is depressurized by the 1 st depressurizing device 510. Thus, in CO₂Supply side 311 and CO₂CO production between the permeate sides 312₂The difference in partial pressure of (c).

CO in the exhaust gas using the difference in partial pressure as a driving force₂As indicated by the arrow, via CO₂From CO through the membrane 313₂Supply side 311 towards CO₂The transmission side 312 transmits.

Due to CO₂The transmission side 312 is disposed at the 1 st CO₂Since the pressure of the 1 st pressure reducing device 510 of the permeation-side discharge passage 425 is reduced, the permeated CO is generated₂CO passing through side 312₂As indicated by the arrow, via the 1 st CO₂The transmission side discharge passage 425 to the 1 st CO₂The outside of the separation device 310 is efficiently discharged. In addition, 1 st CO is introduced₂CO of separation unit 310₂The remaining components of the exhaust gas on the supply side 311 pass through the 1 st CO as indicated by the arrow₂The supply side discharge passage 415 to the 1 st CO₂The outside of the separation device 310.

It is noted that FIG. 2 is not intended to be a CO of the present disclosure₂The separation system is limited to having the 1 st CO₂Supply side discharge channel 415 and 1 st CO₂The permeate-side discharge channel 425. Additionally, fig. 2 is not intended to be a CO of the present disclosure₂The separation system is limited to utilizing the 1 st pressure reduction device 510 to provide for the 1 st CO₂CO is discharged from the outside of the separation device 310₂The power scheme of (1).

Thus, in mode 2, by using CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂Can be at CO₂CO is permeated through side₂More efficient separation.

CO by the present disclosure₂The separation system performs mode 2 in addition to mode 1, and can use CO in exhaust gas in a vehicle using an internal combustion engine as power₂More efficient separation.

(mode 3)

CO of the present disclosure₂The split system is also capable of performing mode 3 when (C) the internal combustion engine is at a stop. CO in the present disclosure₂When the separation system is in mode 3, the separation system further comprises a CO removal unit₂Supply side with CO₂CO separated by the permeation side₂2 nd CO permeating through a membrane₂Separation device for removing 2 nd CO from outside of vehicle₂CO of separation plant₂Supply side induced air 2CO₂A supply side introduction flow path, and 2CO₂CO of separation plant₂A 2 nd decompression device for decompressing the permeation side.

In mode 3, from outside the vehicle via the 2CO₂The supply side leads into the flow path to the 2 nd CO₂CO of separation plant₂Introducing air into the supply side and 2CO using the 2 nd pressure reducing device₂CO of separation plant₂The permeation side is depressurized to produce 2CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂Using the difference of partial pressures of (2) CO as a driving force₂CO of separation plant₂CO in the air is permeated through the membrane₂From 2CO₂CO of separation plant₂Supply side direction CO₂The transmission side selectively transmits.

FIG. 3 is a CO of the present disclosure undergoing mode 3₂A schematic diagram of an example of a portion of a separation system. Although not explicitly shown in fig. 3, the internal combustion engine is at a stop. The vehicle may be running or at a stop.

In fig. 3, air introduced from the outside 200 of the vehicle passes through the 2 nd CO as indicated by an arrow₂The supply side is introduced into the flow path 430 to the 2 nd CO₂CO of separation plant 320₂The supply side 321. In addition, 2 nd CO₂CO of separation plant 320₂The permeate side 322 is depressurized by the 2 nd depressurization device 520. Thus, in CO₂Supply side 321 and CO₂CO production between the permeate sides 322₂The difference in partial pressure of (c).

CO in the air using the difference in partial pressure as a driving force₂Via CO₂From CO through the membrane 323₂Supply side 321 to CO₂The transmission side 322.

Due to CO₂The transmission side 322 is disposed at the 2CO₂Since the 2 nd decompressor 520 of the permeation side discharge channel 445 decompresses, the CO permeates₂CO passing through side 322₂As indicated by the arrow, via the 1 st CO₂A transmission side discharge channel 445 to the 2CO₂The outside of the separation device 320 is efficiently discharged. In addition, CO is introduced₂The remaining components of the air at the supply side 321 are passed through the 2 nd CO as shown by the arrows₂Supply side discharge channel 435 to 2CO₂The outside of the separator 320.

Additionally, fig. 3 is not intended to be a CO of the present disclosure₂The separation system is limited to having the 2 nd CO₂Supply-side discharge channel 435 and 2CO₂The transmission side discharge channel 445. Additionally, fig. 3 is not intended to be a CO of the present disclosure₂The separation system is limited to utilizing the 2 nd pressure reduction device 520 to provide for the 2 nd CO₂CO is discharged from the outside of the separation device 320₂The power scheme of (1).

Thus, in mode 3, by using CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂Can be at CO₂CO is permeated through side₂More efficient separation.

In addition, CO by the present disclosure₂The separation system performs mode 3 in addition to mode 1, not only for CO in the exhaust gas in a vehicle using an internal combustion engine as power₂And CO in the atmosphere around the lane can be extracted₂And (5) separating.

< vehicle >

CO carrying the present disclosure₂The vehicle of the separation system is a vehicle using an internal combustion engine as power. CO carrying the present disclosure₂The vehicle having the split system may be a hybrid vehicle that further includes an electric motor and uses at least one of the internal combustion engine and the electric motor as power by switching the electric motor.

Mounting the CO of the present disclosure on such a hybrid vehicle₂In the case of the split system, even when the internal combustion engine of the vehicle is stopped and the vehicle is traveling by the electric motor, the 3 rd mode can be performed, and CO in the atmosphere around the lane can be extracted₂More efficient separation. In this case, the 2 nd CO₂CO of separation plant₂Supply side and CO₂CO at the permeate side₂The partial pressure difference of (2) may be set in the 2 nd decompressor to the 2 nd CO₂CO of separation plant₂In addition to or instead of the pressure reduction on the transmission side, the traveling wind is used to drive the CO according to Bernoulli's theorem₂Permeation side CO₂Is generated by the static pressure drop.

<CO₂Separating device>

CO of the present disclosure₂The separation system has the 1 st CO₂And (4) a separation device. 1CO₂The separation device has the function of separating CO₂Supply side with CO₂CO separated by the permeation side₂Permeate through the membrane.

1CO₂CO of the separation plant₂The permeable membrane is only required to allow CO in the exhaust gas₂The selective permeation is not particularly limited. From in 1 st and 2 nd modesUsing CO₂Permeable membranes for separating CO from exhaust gases₂From the viewpoint of (1), the CO₂The permeable membrane is preferably a zeolite membrane or a silica gel membrane. This is because these permeable membranes have high mechanical durability.

In addition, CO in the present disclosure₂In case of the separation system performing mode 3, the CO of the present disclosure₂The separation system has 2CO₂And (4) a separation device. 2CO 2₂The separation device has the function of separating CO₂Supply side with CO₂CO separated by the permeation side₂Permeate through the membrane.

2CO 2₂CO of the separation plant₂The permeable membrane is only required to be capable of allowing CO in the air₂The selective permeation is not particularly limited. From using CO in mode 3₂Permeation membrane for separating CO from air₂From the viewpoint of (1), the CO₂The permeable membrane is preferably a membrane such as a polymer membrane that can efficiently separate even when the partial pressure difference is relatively small.

CO in the present disclosure₂When the separation system performs the 1 st to 3 rd modes, the 1 st CO used in the 1 st and 2 nd modes₂Separation apparatus and 2CO used in mode 3₂The separation means may utilize separate means or the same means. In this case, CO₂CO of the separation plant₂The permeation membrane can be used for absorbing CO in exhaust gas and air₂A selectively permeable membrane.

1 st CO used in mode 1 and mode 2₂Separation apparatus and 2CO used in mode 3₂When the separation apparatus is a single apparatus, the 1 st CO used in the 1 st mode and the 2 nd mode₂A separation device capable of utilizing CO suitable for use in exhaust gas₂Permeated CO₂A transmission membrane for the 2 nd CO used in the 3 rd mode₂A separation device capable of utilizing CO suitable for use in air₂Permeated CO₂Permeate through the membrane. Thus, can be used for CO₂Permeated CO of₂CO switching by matching the permeation membrane with the mode₂Permeating the membrane to efficiently carry out CO₂And (5) separating.

In addition, the 1 st CO used in the 1 st and 2 nd modes₂Separation apparatus and 2CO used in mode 3₂When the separation apparatus is the same apparatus, the CO on which the present disclosure is mounted can be reduced in size₂Space required for a separation system to enable CO incorporating the present disclosure₂The space saving of the vehicle of the separation system.

< flow path >

CO of the present disclosure₂The separation system has a function of converting exhaust gas generated from the internal combustion engine to 1 st CO₂CO of separation plant₂1 st CO introduced from the supply side₂A supply side introduction flow path and a flow path for introducing air outside the vehicle to the 1 st CO₂CO of separation plant₂1 st CO introduced through the permeate side₂The permeation side leads into the channel.

1CO₂The supply-side inflow passage is only required to be able to introduce exhaust gas generated from the internal combustion engine to the 1 st CO₂CO of separation plant₂The supply side may be guided, and the form is not particularly limited. 1CO₂The supply-side introduction flow path may have a structure for connecting the internal combustion engine and the 1 st CO, for example₂CO of separation plant₂The supply side is communicated with the pipe.

1CO₂The permeation side inflow path is only required to be able to direct the air outside the vehicle to the 1 st CO₂CO of separation plant₂The shape is not particularly limited, as long as the light is guided through the side. 1CO₂The permeation-side introduction passage may have a structure for connecting the outside of the vehicle to the 1 st CO, for example₂CO of separation plant₂The pipe connected to the transmission side.

CO in the present disclosure₂In the case of mode 3 in the separation system, CO₂The separation system is used for converting air outside the vehicle to the 2 nd CO₂CO of separation plant₂Supply side introduced 2CO₂The supply side introduction flow path.

2CO 2₂The supply-side inflow path is only required to be able to guide air outside the vehicle to the 2 nd CO₂CO of separation plant₂The supply side may be guided, and the form is not particularly limited. 2CO 2₂Supply side inflowThe road may have, for example, the exterior of the vehicle with the 2 nd CO₂CO of separation plant₂The supply side is communicated with the pipe.

1 st CO used in mode 1 and mode 2₂Separation apparatus and 2CO used in mode 3₂In the case where the separation apparatus is the same apparatus, 1 st CO₂Supply side introduction flow path and 2CO₂The supply-side inflow paths may be the same flow path.

In 1CO₂Supply side introduction flow path and 2CO₂When the supply-side introduction flow path is the same, CO₂The supply-side introduction passage may be provided, for example, in the form of CO₂A pipe structure branched at the opposite side of the separation device side. One side, which may have branched piping, connects the internal combustion engine with the CO₂The separation device communicates with the other pipe for connecting the outside of the vehicle and the CO₂A configuration in which the separation devices communicate.

Further, the outside of the vehicle and the CO may be provided in a branched pipe₂The pipeline communicated with the separator is provided with a switching device such as a valve, and can be switched to CO according to the mode₂CO of separation plant₂The structure of the gas introduced from the supply side.

< pressure reducing device >

CO in the present disclosure₂In the case of performing the 2 nd and 3 rd modes in the separation system, CO₂The separation system has 1 st and 2 nd pressure reduction devices, respectively. The pressure reducing device may be a known device. Examples of the pressure reducing device include a pressure reducing pump.

The pressure reducing device is used for introducing CO in modes 2 and 3₂CO of separation plant₂The permeation side is depressurized. In addition, the pressure reducing device can be used for passing CO₂CO at the permeate side₂To CO₂The power of the external discharge of the separator is used.

The 1 st pressure relief device and the 2 nd pressure relief device may be the same device or separate devices.

Example of Structure

CO of the present disclosure₂The separation system may have, for example, a structure as shown below. It is noted that these structures are not CO for the present disclosure₂The scheme of the separation system is defined.

< structural example 1>

FIG. 4 is a CO of the present disclosure capable of performing mode 1, mode 2, and mode 3₂Schematic diagram of another example of a separation system.

In FIG. 4, CO₂The separation system has an internal combustion engine 100, 1 st CO₂Separation apparatus 310, No. 1CO₂Supply side introduction flow path 410, 1 st CO₂The permeation side introduction channel 420 and the 2CO₂Separation apparatus 320, 2 nd CO₂A supply-side introduction flow path 430 and a pressure reducing device 500.

In this case, 1 st CO₂The separation unit 310 has a device for separating CO₂Supply side 311 and CO₂CO separated by the transmission side 312₂Through the film 313. In addition, 2 nd CO₂The separation device 320 has a device for separating CO₂Supply side 321 and CO₂CO separated by side 322₂Through the film 323.

1CO₂The supply-side introduction flow path 410 connects the internal combustion engine 100 and the 1 st CO₂CO of separation plant₂The supply side 311 is in communication. In addition, 1 st CO₂The permeation side introduction flow path 420 connects the outside 200 of the vehicle and the 1 st CO₂CO of separation unit 310₂The transmission side 312. In addition, 2 nd CO₂The supply-side introduction flow path 430 connects the outside 200 of the vehicle and the 2 nd CO₂CO of separation plant 320₂The supply side 321 communicates.

Here, in FIG. 4, CO₂Separation systems are also in the 1 st CO₂1 st CO of the permeation side introduction flow passage 420₂A valve 801 capable of adjusting the amount of air introduced from the outside 200 of the vehicle is provided on the side opposite to the separator 310. In addition, in the 2 nd CO₂2CO of the supply side introduction flow path 430₂A valve 802 capable of adjusting the amount of air introduced from the outside 200 of the vehicle is provided on the side opposite to the separator 320.

In addition, in FIG. 4, CO₂The separation system further includes an exhaust gas purification catalyst device 600, No. 1CO₂Supply side discharge channel 415, No. 1CO₂Permeate-side discharge channel 425 and 2 nd CO₂Supply side discharge channel 435, No. 2CO₂Transmission side exhaust channel 445 and CO₂The device 700 is stored.

CO in FIG. 4₂In the case of mode 1 in the separation system, the CO of the present disclosure₂The separation system functions as follows.

The exhaust gas generated from the internal combustion engine 100 passes through the exhaust gas purifying catalyst device 600 and then passes through the 1 st CO₂The supply side is introduced into the flow path 410 to the 1 st CO₂CO of separation unit 310₂The supply side 311. Further, the valve 801 is opened, and the air outside 200 of the vehicle is taken into the vehicle by, for example, the traveling wind, and passes through the 1 st CO₂The permeation side introduction flow path 420 is introduced into the 1 st CO₂CO of separation unit 310₂Through side 312.

Thereby, to the 1 st CO₂CO of separation unit 310₂The supply side 311 introduces exhaust gas to CO₂Air is introduced through the transmission side 312 at the 1 st CO₂CO of separation unit 310₂Supply side 311 and CO₂CO production between the permeate sides 312₂Partial pressure of (c).

CO in the exhaust gas using the difference in partial pressure as a driving force₂Via CO₂From CO through the membrane 313₂Supply side 311 towards CO₂The transmission side 312 transmits.

Permeation of CO₂CO passing through side 312₂Via the 1 st CO₂The transmission side discharge flow path 425 passes through the first CO generation path together with the air₂Discharged outside the separation device 310 as CO₂Stored in the storage device 700.

In the case of mode 2 using the system of FIG. 4, the CO of the present disclosure₂The separation system functions as follows.

The exhaust gas generated from the internal combustion engine 100 passes through the exhaust gas purifying catalyst device 600 and then passes through the 1 st CO₂The supply side is introduced into the flow path 410 to the 1 st CO₂CO of separation unit 310₂The supply side 311. Here, the valve 801 is closed.

1CO₂Separating device310 of CO₂The transmission side 312 is depressurized by the depressurization device 500. Thus, in the 1 st CO₂CO of separation unit 310₂Supply side 311 and CO₂CO production between the permeate sides 312₂Partial pressure of (c).

CO in the exhaust gas using the difference in partial pressure as a driving force₂Via CO₂From CO through the membrane 313₂Supply side 311 towards CO₂The transmission side 312 transmits.

Permeation of CO₂CO passing through side 312₂Via the 1 st CO₂The transmission side discharge flow path 425 passes through the first CO generation path together with the air₂Discharged outside the separation device 310 as CO₂Stored in the storage device 700.

Using the CO of FIG. 4₂CO of the present disclosure with separation System having mode 3₂The separation system functions as follows.

In the 2 nd CO₂2CO of the supply side introduction flow path 430₂The valve 802 provided on the opposite side of the separation device 320 is open, thereby passing through the 2 nd CO from the outside 200 of the vehicle₂The supply side is introduced into the flow path 430 to the 2 nd CO₂CO of separation plant 320₂The supply side 321 introduces air. In addition, 2 nd CO₂CO of separation plant 320₂The permeation side 322 is depressurized by the depressurization device 500.

Thus, in the 2 nd CO₂CO of separation plant 320₂Supply side 321 and CO₂CO between the permeate sides 322₂The partial pressure of (a) produces a difference. CO of air using the difference of partial pressures as driving force₂Via CO₂From CO through the membrane 323₂Supply side 321 to CO₂The transmission side 322. Permeation of CO₂CO passing through side 322₂Via 2CO₂A transmission side discharge channel 445 to the 2CO₂Discharged outside the separation device 320 as CO₂Stored in the storage device 700.

< structural example 2>

FIG. 5 is a CO of the present disclosure capable of performing mode 1, mode 2, and mode 3₂Schematic diagram of another example of a separation system.

CO of FIG. 5₂The separation system has the 1 st CO₂Separation apparatus and 2 nd CO₂The separation apparatus being one and the same and 1 st CO₂Supply side introduction flow path and 2CO₂The supply-side introduction flow path is the same flow path, and the 1 st and 2 nd pressure reducing devices are the same device.

In FIG. 5, CO₂The separation system has an internal combustion engine 100, 1 st CO₂Separation apparatus 310, No. 1CO₂Supply side introduction flow path 410, 1 st CO₂A permeation side introduction flow path 420 and a pressure reducing device 500.

In this case, 1 st CO₂The separation unit 310 has a device for separating CO₂Supply side 311 and CO₂CO separated by the transmission side 312₂Through the film 323. 1CO₂The supply-side introduction flow path 410 connects the internal combustion engine 100 and the 1 st CO₂CO of separation unit 310₂The supply side 311 communicates with the outside 200 of the vehicle and the 1 st CO₂CO of separation unit 310₂The supply side 311 is in communication. In addition, 1 st CO₂The permeation side introduction flow path 420 connects the outside 200 of the vehicle and the 1 st CO₂CO of separation unit 310₂The transmission side 312.

And, in 1CO₂Outside 200 side and No. 1CO of vehicle of supply side introduction flow path 410₂The valve 801 and the valve 802 are provided on the vehicle exterior 200 side of the permeation-side introduction flow path 420, respectively. By opening and closing these two valves, the air outside 200 of the vehicle can be switched to the 1 st CO₂CO of separation unit 310₂Supply side 311 and CO₂Through side 312.

In addition, in FIG. 5, CO₂The separation system further includes an exhaust gas purification catalyst device 600, No. 1CO₂Supply side discharge channel 415, No. 1CO₂Permeate-side discharge channel 425 and CO₂The device 700 is stored. Here, the pressure reducing device 500 is installed in the 1 st CO₂1 st CO of the permeation side discharge channel 425₂The opposite side of the separation device 310.

CO of FIG. 5₂Separation system and CO of FIG. 4₂The separate system is likewise capable of passing a valve depending on whether the internal combustion engine is operating or stopped and whether the vehicle is running801 and a valve 802 are opened and closed to perform a 1 st mode, a 2 nd mode, and a 3 rd mode.

Description of the reference symbols

100 internal combustion engine

200 exterior of vehicle

310 1 st CO₂Separating device

311 CO₂Supply side

312 CO₂Through side

313 CO₂Permeable membrane

320 nd 2CO₂Separating device

321 CO₂Supply side

322 CO₂Through side

323 CO₂Permeable membrane

410 1 st CO₂Supply side inflow path

415 1 st CO₂Supply side discharge flow path

420 1 st CO₂Flow path is led to through the side

425 st CO₂Permeate-side discharge channel

430 nd 2CO₂Supply side inflow path

435 nd 2CO₂Supply side discharge flow path

445 2CO₂Permeate-side discharge channel

500 pressure reducing device

510 st pressure relief device

520 nd 2 nd pressure relief device

600 exhaust gas purifying catalyst device

700 CO₂Storage device

801 valve

802 valve