WO2015001989A1 - 吸収方法及び吸収装置 - Google Patents
吸収方法及び吸収装置 Download PDFInfo
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- WO2015001989A1 WO2015001989A1 PCT/JP2014/066446 JP2014066446W WO2015001989A1 WO 2015001989 A1 WO2015001989 A1 WO 2015001989A1 JP 2014066446 W JP2014066446 W JP 2014066446W WO 2015001989 A1 WO2015001989 A1 WO 2015001989A1
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- fluid
- flow path
- gas
- absorption
- channel
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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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- B01D53/14—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 absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/204—Amines
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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
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
Definitions
- the present invention relates to an absorption method and an absorption device.
- An absorption operation is one of the methods for separating specific components in gas.
- the absorption operation methods are roughly classified into a method of dispersing the absorbing liquid in the gas and a method of dispersing the gas in the absorbing liquid.
- an absorption tower such as a packed tower or a spray tower is used.
- an absorption tower such as a plate tower or a bubble tower is used.
- this absorption tower it is also well-known as a technique of patent gazette description (for example, refer patent document 1, 2).
- An object of the present invention is to increase the absorption rate per unit volume of the absorption liquid while increasing the absorption speed when absorbing the specific component in the gas into the absorption liquid.
- the absorption method includes a step of preparing a fine flow path, and the gas so that the absorbed component as the second fluid is absorbed from the gas as the first fluid including the absorbed component. And a main flow step for flowing the absorption liquid through the fine flow path, and a third fluid for increasing the pressure in the fine flow path in a state where the gas and the absorption liquid are flowed through the fine flow path. A sub-circulation step for circulating the gas in the fine flow path.
- An absorption device includes a first supply unit that supplies a gas as a first fluid containing a component to be absorbed, a second supply unit that supplies an absorbing liquid as a second fluid, A fine channel that absorbs the component to be absorbed from the gas to the absorption liquid while circulating the gas supplied by the first supply unit and the absorption liquid supplied by the second supply unit; And a third supply unit for supplying a third fluid for increasing the pressure in the fine channel to the fine channel.
- the fine channel device used in the present embodiment is used in an absorption method (absorption operation) in which a specific component is absorbed from a gas as a first fluid into an absorption liquid as a second fluid. That is, the fine channel device is used for an absorption device.
- this fine channel apparatus can be used also in order to produce interaction other than the absorption operation of those fluids by making fluids merge.
- the fine channel device can be used for a microreactor, a heat exchanger, a reaction device for extraction reaction, a mixing device for emulsification, and the like.
- FIG. 1 is a diagram showing a configuration of a microchannel device 1 according to the present embodiment.
- the microchannel device 1 includes a main body portion 4, a first fluid header 6, a second fluid header 8, a third fluid header 10, and a fluid discharge. Header 12 and temperature control fluid headers 14 and 16 are provided.
- the main body 4 occupies most of the fine channel device 1 and is formed in a rectangular parallelepiped shape.
- the main body 4 has a first end surface 4a, a second end surface 4b, a third end surface 4c, and a fourth end surface 4d.
- the first end surface 4 a is an end surface facing one side in the longitudinal direction of the main body portion 4.
- the 2nd end surface 4b is an end surface of the main-body part 4 which faces the opposite side to the 1st end surface 4a.
- the third end surface 4 c is an end surface that faces one side in the short direction perpendicular to the longitudinal direction of the main body portion 4.
- the 4th end surface 4d is an end surface of the main-body part 4 which faces the opposite side to the 3rd end surface 4c.
- the longitudinal direction of the main body 4 is the same as the longitudinal direction of the microchannel device 1.
- the short direction of the main body 4 is the same as the short direction of the fine channel device 1.
- the thickness direction of the main body 4 is
- the first fluid header 6 and the temperature control fluid header 16 are disposed so as to face the first end surface 4 a of the main body 4 and are coupled to the main body 4.
- the fluid discharge header 12 and the temperature adjusting fluid header 14 are disposed so as to face the second end surface 4 b of the main body 4 and are coupled to the main body 4.
- the second fluid header 8 and the third fluid header 10 are disposed so as to face the third end face 4 c of the main body 4 and are coupled to the main body 4.
- the third fluid header 10 is disposed at a position farther from the first end surface 4 a than the second fluid header 8.
- each fluid flow path 2 is a flow path for causing the first fluid, the second fluid, and the third fluid to join and circulate.
- the first fluid and the second fluid are fluids that interact with each other.
- Each fluid flow path 2 absorbs the component to be absorbed from the first fluid to the second fluid while allowing the first fluid and the second fluid to flow in contact with each other.
- Each temperature control flow path 3 is a flow path for flowing a temperature control fluid for adjusting the temperature of the fluid flowing through the fluid flow path 2. Therefore, the fluid flow path 2 and the temperature control flow path 3 will be described.
- FIG. 2A is a diagram showing an example of the fluid flow path 2 in the micro flow path device 1 in the present embodiment.
- Each fluid channel 2 is a so-called micro channel having a minute channel diameter.
- Each fluid channel 2 is an example of a fine channel.
- the fluid flow path 2 includes a first introduction path 2a, a second introduction path 2b, a third introduction path 2c, and a merging fluid flow path 2d.
- the first introduction path 2a is a part into which the first fluid is introduced.
- the second introduction path 2b is a part into which the second fluid is introduced.
- the third introduction path 2c is a part into which the third fluid is introduced.
- the joined fluid flow path 2d is a part that joins and distributes the fluid introduced into the first, second, and third introduction paths 2a, 2b, and 2c, respectively. *
- the first introduction path 2a is disposed in the main body 4 in the vicinity of the first end face 4a and near the third end face 4c.
- the first introduction path 2 a extends linearly in the longitudinal direction of the main body portion 4.
- the first introduction path 2a has a first introduction port 2e for introducing the first fluid into the first introduction path 2a.
- the second introduction path 2b is disposed at a position near the third end face 4c in the main body portion 4.
- the second introduction path 2b extends linearly in the short direction of the main body 4 from the third end face 4c toward the fourth end face 4d.
- the second introduction path 2b extends in a direction orthogonal to the first introduction path 2a.
- the second introduction path 2b has a second introduction port 2f for introducing the second fluid into the second introduction path 2b.
- the third introduction path 2c is also disposed at a position near the third end face 4c in the main body portion 4.
- the third introduction path 2c extends linearly in the short direction of the main body portion 4 from the third end surface 4c toward the fourth end surface 4d.
- the third introduction path 2c also extends in a direction orthogonal to the first introduction path 2a.
- the third introduction path 2c is disposed at a position farther from the first end face 4a of the main body 4 than the second introduction path 2b.
- the third introduction path 2c has a third introduction port 2g for introducing a third fluid into the third introduction path 2c.
- merging fluid flow paths meandered in which the part linearly extended to the 1st end surface 4a side in the longitudinal direction of the main-body part 4 and the part turned back from the part and linearly extended to the 2nd end surface 4b side were connected alternately. It is formed into a shape.
- the merging fluid flow path 2d includes a plurality of linear flow path portions 2h, a plurality of first folding portions 2i, and a plurality of second folding portions 2j.
- the straight flow path portion 2h constitutes a portion extending linearly in the longitudinal direction of the main body portion 4 in the combined fluid flow path 2d.
- the plurality of straight flow path portions 2h are arranged in parallel to each other.
- the plurality of straight flow path portions 2 h are arranged so as to be arranged at intervals in the short direction of the main body portion 4.
- the first folded portion 2i is disposed on the end portion on the first end surface 4a side of the portion extending linearly toward the first end surface 4a side in the longitudinal direction of the main body portion 4 in the combined fluid flow path 2d and on the downstream side of the portion. And a portion that linearly extends to the second end surface 4b side and that connects the end portion on the first end surface 4a side to each other. That is, the first folded portion 2 i connects the end portions on the first end face 4 a side of the linear flow path portions 2 h adjacent in the short direction of the main body portion 4.
- the flow path is folded back to the path portion 2h.
- turning part 2j is arrange
- the portion that extends linearly toward the first end surface 4a side and the end portion on the second end surface 4b side are connected to each other. That is, the second folded portion 2j connects the end portions on the second end face 4b side of the linear flow path portions 2h adjacent in the short direction of the main body portion 4.
- the merging fluid channel 2d has a lead-out port 2k for leading the fluid out of the merging fluid channel 2d.
- the outlet 2k is provided at the downstream end of the merging fluid flow path 2d.
- a first supply channel 2m, a second supply channel 2n, a third supply channel 2o, and a recovery channel 2p are formed.
- the first supply flow path 2m is formed in the first fluid header 6.
- a second supply flow path 2n is formed in the second fluid header 8.
- a third supply channel 2 o is formed in the third fluid header 10.
- a recovery flow path 2p is formed in the fluid discharge header 12.
- the first supply channel 2m is for distributing and supplying the first fluid to the first introduction port 2e of the first introduction channel 2a of each fluid channel 2.
- the first supply channel 2m has a first supply hole 2q and a first supply channel connection part 2r.
- the first supply hole 2q opens at one end surface (referred to as a fifth end surface) in the thickness direction of the microchannel device 1.
- the first supply hole 2q is the fluid flow path 2 closest to the sixth end face among the plurality of fluid flow paths 2 from the opening toward the other end face (referred to as the sixth end face) in the thickness direction of the micro flow path device 1. Extends to a position corresponding to.
- a first supply connector (not shown) is connected to the first supply hole 2q.
- the first fluid is supplied to the first supply hole 2q through the first supply side connector.
- the first supply flow path connecting portion 2r is connected to the fluid flow path 2 closest to the sixth end face from the position corresponding to the fluid flow path 2 closest to the fifth end face of the fine flow path device 1 among the plurality of fluid flow paths 2.
- the microchannel device 1 extends in the thickness direction over the corresponding position.
- the first supply flow path connecting portion 2r is formed so as to communicate with the first supply hole 2q.
- the first supply flow path connection portion 2r is connected to the first introduction port 2e of each fluid flow path 2.
- the first supply flow path connecting portion 2r distributes the first fluid supplied to the first supply hole 2q to each first introduction port 2e.
- the second supply channel 2n is for distributing and supplying the second fluid to the second introduction port 2f of the second introduction channel 2b of each fluid channel 2.
- the second supply flow path 2n includes a second supply hole 2s to which a second supply side connector (not shown) is connected, and a second supply flow path connection portion 2t connected to the second introduction port 2f of each fluid flow path 2.
- Have The configurations of the second supply hole 2s and the second supply channel connection 2t of the second supply channel 2n are the same as the configurations of the first supply hole 2q and the first supply channel connection 2r of the first supply channel 2m. It is the same.
- the third supply channel 2o is for distributing and supplying the third fluid to the third introduction port 2g of the third introduction channel 2c of each fluid channel 2.
- the third supply channel 2o includes a third supply hole 2u to which a third supply-side connector (not shown) is connected, and a third supply channel connection part 2v connected to the third introduction port 2g of each fluid channel 2.
- Have The configurations of the third supply hole 2u and the third supply channel connection portion 2v of the third supply channel 2o are the same as the configurations of the first supply hole 2q of the first supply channel 2m and the first supply channel connection portion 2r. It is the same.
- the recovery flow path 2p is for joining and recovering the fluid derived from the outlet 2k of the merging fluid flow path 2d of each fluid flow path 2.
- the recovery channel 2p has a recovery hole 2w and a recovery channel connection part 2x.
- the recovery hole 2w opens at the fifth end face of the microchannel device 1.
- the recovery hole 2w extends from the opening toward the sixth end surface of the microchannel device 1 to a position corresponding to the fluid channel 2 closest to the sixth end surface among the plurality of fluid channels 2.
- a collection connector (not shown) is connected to the collection hole 2w.
- the recovery channel connecting part 2x corresponds to the fluid channel 2 closest to the sixth end surface from the position corresponding to the fluid channel 2 closest to the fifth end surface of the microchannel device 1 among the plurality of fluid channels 2.
- the recovery flow path connecting portion 2x is formed so as to communicate with the recovery hole 2w.
- the recovery flow path connecting portion 2x is connected to the outlet 2k of each fluid flow path 2.
- the recovery flow path connecting portion 2x joins the fluids derived from the respective outlets 2k.
- the fluid merged at the recovery flow path connecting portion 2x flows into the recovery hole 2w and is led out through a recovery side connector (not shown).
- the first introduction path 2a and the merging fluid flow path 2d, and the second introduction path 2b and the third introduction path 2c are shown on the same plane. However, actually, the merged fluid flow path 2d, the second introduction path 2b, and the third introduction path 2c are different from each other in the thickness direction position of the main body portion 4 of the microchannel device 1.
- the main body 4 is formed by stacking a plurality of substrates. The stacking direction of the substrates corresponds to the thickness direction of the microchannel device 1 and the main body 4.
- the plurality of substrates constituting the main body 4 includes a substrate that forms the fluid flow path 2.
- FIG. 2B is a view of the substrate forming the fluid flow path 2 as viewed from the surface.
- FIG. 2C is a view of the substrate shown in FIG. 2B as viewed from the back surface facing away from the front surface.
- the first introduction path 2 a and the merging fluid flow path 2 d are on the surface of the substrate forming the fluid flow path 2.
- the second introduction path 2 b and the third introduction path 2 c are on the back surface of the substrate forming the fluid flow path 2.
- FIG. 2D is a diagram showing another example of the fluid channel 2 in the microchannel device 1 according to the present embodiment.
- the fluid flow path 2 includes a first introduction path 2a, a second introduction path 2b, a third introduction path 2c, a combined fluid flow path 2d, a first introduction path shown in FIG.
- a set of five ports 2e, a second inlet 2f, a third inlet 2g, a straight channel portion 2h, a first folding portion 2i, a second folding portion 2j, and an outlet port 2k is arranged in parallel.
- the number of sets arranged in parallel is five here, it may be any number.
- the first supply flow path 2 m is provided in common for a set of five arranged in parallel.
- the second supply flow path 2 n is provided in common for a set of five arranged in parallel.
- the third supply flow path 2o is provided in common for a set in which five pieces are arranged in parallel.
- five recovery flow paths 2 p are provided in common for a set arranged in parallel.
- the functions of the first supply channel 2m, the second supply channel 2n, the third supply channel 2o, and the recovery channel 2p are the same as the functions of the corresponding channels illustrated in FIG. 2A. Since each component has been described with reference to FIG. 2A, detailed description thereof is omitted here.
- FIG. 2D the first introduction path 2a and the merging fluid flow path 2d, and the second introduction path 2b and the third introduction path 2c are shown on the same plane. However, actually, the first introduction path 2a and the merging fluid flow path 2d, and the second introduction path 2b and the third introduction path 2c are different from each other in the thickness direction position of the main body portion 4 of the microchannel device 1. ing.
- FIG. 2E is a view of the substrate forming the fluid flow path 2 among the plurality of substrates constituting the main body section 4 as viewed from the surface.
- FIG. 2F is a view of the substrate shown in FIG. 2E as seen from the back surface facing away from the front surface.
- the first introduction path 2a and the merging fluid flow path 2d are on the surface of the substrate forming the fluid flow path 2.
- the second introduction path 2b and the third introduction path 2c are on the back surface of the substrate forming the fluid flow path 2.
- FIG. 3 is a diagram showing the temperature control flow path 3 in the micro flow path device 1 in the present embodiment.
- Each temperature control channel 3 is composed of a plurality of unit channels 3a arranged in parallel as shown in FIG.
- Each unit flow path 3a is formed in a meandering shape in which a portion extending toward the first end surface 4a in the longitudinal direction of the main body portion 4 and a portion folded back from the portion and extending toward the second end surface 4b are alternately connected.
- the fine channel device 1 is formed with a temperature control supply channel 3b and a temperature control recovery channel 3c.
- the temperature control supply channel 3b is for distributing and supplying a temperature control fluid to each temperature control channel 3.
- the temperature control supply flow path 3b is formed in the temperature control fluid header 14.
- the temperature adjustment supply channel 3b has a temperature adjustment supply hole 3d and a plurality of temperature adjustment supply channel connection portions 3e.
- the temperature control supply hole 3d opens at one end surface (fifth end surface) in the thickness direction of the microchannel device 1.
- the temperature control supply hole 3d is the temperature control channel 3 closest to the sixth end surface among the plurality of temperature control channels 3 from the opening toward the other end surface (sixth end surface) in the thickness direction of the microchannel device 1. Extends to a position corresponding to.
- a temperature control supply connector (not shown) is connected to the temperature control supply hole 3d.
- the temperature adjustment fluid is supplied to the temperature adjustment supply hole 3d through the temperature adjustment supply side connector.
- the temperature control supply channel connection part 3 e is formed at a position corresponding to each temperature control channel 3 in the thickness direction of the microchannel device 1.
- the temperature control supply channel connection part 3e connects the temperature control supply hole 3d and the upstream end of the plurality of unit channels 3a of each temperature control channel 3.
- the temperature adjusting fluid supplied to the temperature adjusting supply hole 3d is distributed to the plurality of unit channels 3a of each temperature adjusting channel 3 through each temperature adjusting supply channel connecting portion 3e.
- the temperature control recovery channel 3 c is for recovering the temperature control fluid from each temperature control channel 3.
- the temperature regulation recovery flow path 3c is formed in the temperature regulation fluid header 16.
- the temperature control recovery flow path 3c has a temperature control recovery hole 3f and a plurality of temperature control recovery flow path connection portions 3g connected to the downstream ends of the temperature control flow paths 3.
- the structure of the temperature control recovery hole 3f and the temperature control recovery flow path connection part 3g is the same as the structure of the temperature control supply hole 3d and the temperature control supply flow path connection part 3e.
- a temperature control recovery side connector (not shown) is connected to the temperature control recovery hole 3f.
- the temperature adjusting fluid led out from the downstream ends of the plurality of unit channels 3a of each temperature adjusting channel 3 passes through the temperature adjusting recovery holes 3f from each temperature adjusting recovery channel connecting portion 3g, and further the temperature adjusting recovery side connector. Derived through.
- the plurality of fluid channels 2 and the plurality of temperature control channels 3 are formed in the microchannel device 1 so as to be aligned in the thickness direction of the microchannel device 1. Specifically, each part of one fluid channel 2 is arranged on one plane.
- the two temperature control channels 3 are arranged separately on both sides of the fluid channel 2 in the thickness direction of the microchannel device 1 (direction perpendicular to the one plane).
- a plurality of sets of channels are arranged in the thickness direction of the microchannel device 1 with the one fluid channel 2 and the two temperature control channels 3 as a set of channels.
- FIG. 4 is a part of a cross-sectional view of an arbitrary surface that is parallel to the first end surface 4a of the microchannel device 1 according to the present embodiment and does not include the folded portion of the fluid channel 2 and the temperature control channel 3. .
- FIG. 4 shows the arrangement in the thickness direction of the fluid flow path 2 and the temperature control flow path 3 in the fine flow path device 1.
- a plurality of merging fluid flow paths 2 d of the fluid flow path 2 are arranged side by side in the main body 4.
- the plurality of unit flow paths 3 a of the temperature control flow path 3 are arranged on one side or the other side in the thickness direction of the main body 4 with respect to each fluid flow path 2 in the main body 4. They are arranged at intervals.
- the main body 4 is formed of a member in which a plurality of substrates are stacked and joined to each other.
- Each fluid channel 2 is formed by sealing a groove formed in a shape corresponding to the fluid channel 2 on the surface of the substrate with another substrate laminated on the substrate.
- Each temperature control channel 3 is formed by sealing a groove formed in a shape corresponding to the temperature control channel 3 on the surface of the substrate with another substrate stacked on the substrate.
- each fluid flow path 2 and each temperature control flow path 3 have a semicircular cross section with a circular arc on the lower side, but this is not restrictive.
- each fluid flow path 2 and each temperature control flow path 3 may have a semicircular cross section in which the upper side is a circular arc.
- each fluid channel 2 includes a first groove formed in a shape corresponding to the fluid channel 2 on the surface of the first substrate, and a back surface of the second substrate stacked on the first substrate.
- the first groove may have a circular cross section by overlapping with the second groove formed so as to be symmetrical.
- each temperature control channel 3 includes a third groove formed in a shape corresponding to the temperature control channel 3 on the surface of the third substrate, and a fourth substrate stacked on the third substrate. It is good also as what has a circular cross section by superimposing the 4th groove
- an absorption operation is performed in which the absorption component absorbs a specific component, which is a component to be absorbed, using the fine channel device 1 as described above.
- the gas is circulated from the first supply hole 2q to the fluid flow path 2
- the absorption liquid is circulated from the second supply hole 2s to the fluid flow path 2
- the refrigerant is circulated to the temperature control flow path 3 at the same time.
- the absorption operation is performed.
- the third fluid is supplied from the third supply hole 2u to the fluid flow path 2 in which the gas as the first fluid flows and the absorbing liquid as the second fluid flows.
- the pressure in the fluid flow path 2 can be increased. For this reason, the amount of absorption per unit volume of the absorbent increases and the absorption rate increases.
- the gas since the gas is compressed in the fluid flow path 2, compression heat is generated in the fluid flow path 2 in addition to the heat absorbed by absorption. For this reason, more heat can be recovered compared to the case where the gas is compressed before being supplied to the fluid flow path 2.
- the third fluid is a liquid and a case where the third fluid is a gas are considered.
- a case where the third fluid is a liquid will be described as a first example
- a case where the third fluid is a gas will be described as a second example, and these examples will be described in detail.
- a third fluid that is a liquid is supplied to the fluid flow path 2 in which a gas-liquid two-phase flow is formed.
- the third fluid is insoluble and inactive with respect to the gas as the first fluid and the absorbing liquid as the second fluid.
- this does not exclude that the third fluid is soluble or active with respect to the gas that is the first fluid and the absorbent that is the second fluid.
- the first fluid is carbon dioxide-containing gas and the second fluid is water
- the third fluid may be decane, dodecane, hexadecane, or the like.
- the first fluid is a carbon dioxide-containing gas and the second fluid is an absorption liquid mainly composed of an amine compound
- the third fluid may be decane, dodecane, hexadecane, or the like.
- FIG. 5 is a diagram showing the configuration of the absorption device 20 in the first embodiment.
- the absorption device 20 in the first embodiment includes the fine flow path device 1 including the fluid flow path 2 and the temperature control flow path 3 described with reference to FIGS. 1 to 4.
- a state in which only the gas that is the first fluid and the absorbing liquid that is the second fluid circulate in the fluid flow path 2 is indicated by a vertical stripe pattern.
- the fine channel device 1 as shown in FIG. 4, a plurality of layers having the fluid channel 2 and the temperature control channel 3 adjacent to the upper and lower sides of the fluid channel 2 are stacked. Only one layer having the fluid flow path 2 and the temperature control flow path 3 adjacent to the upper and lower sides thereof is schematically shown.
- a mechanism for supplying a temperature adjusting fluid to the temperature adjusting channel 3 and a mechanism for recovering the temperature adjusting fluid from the temperature adjusting channel 3 are actually connected to the fine channel device 1. Then, illustration of these mechanisms is omitted.
- the absorber 20 includes a compressor 21, a check valve 22, a liquid pump 23, and a check valve 24.
- the compressor 21 is connected to the first supply hole 2q of the fine channel device 1 through the check valve 22.
- the liquid pump 23 is connected to the second supply hole 2 s of the microchannel device 1 via the check valve 24.
- the absorption device 20 includes a gas-liquid separator 25, a gate valve 26, a back pressure valve 27, a gate valve 28, a liquid pump 31, and a gate valve 32.
- the gas-liquid separator 25 is connected to the recovery hole 2 w of the fine channel device 1.
- the gate valve 26, the back pressure valve 27, the gate valve 28, and the liquid pump 31 are each connected to the gas-liquid separator 25.
- the liquid pump 31 is connected to the third supply hole 2 u of the microchannel device 1 via the gate valve 32.
- Compressor 21 compresses gas supplied from a gas supply source (not shown).
- the compressor 21 circulates the compressed gas from the first supply hole 2q of the fine channel device 1 to the fluid channel 2 via the check valve 22.
- a compressor 21 is provided as an example of the first supply unit.
- the compressor 21 may be a screw type positive displacement compressor that compresses gas by rotating a screw rotor, or a reciprocating positive displacement compressor that compresses gas by reciprocating motion of a piston. Good.
- a turbo type centrifugal compressor that compresses gas by a centrifugal force obtained by the rotation of the impeller may be used.
- the check valve 22 is provided to prevent the third fluid from flowing back to the compressor 21 when the third fluid flows through the fluid flow path 2 as will be described later.
- the liquid pump 23 sucks and discharges the absorption liquid supplied from an absorption liquid supply source (not shown), and thereby passes through the check valve 24 to the fluid flow path 2 from the second supply hole 2s of the fine flow path device 1. And make the absorption liquid circulate.
- a liquid pump 23 is provided as an example of the second supply unit.
- a rotary positive displacement pump that sucks and discharges the absorbing liquid by the rotational motion of the rotor and gears, or sucks and discharges the absorbing liquid by the reciprocating motion of the piston and plunger.
- a reciprocating positive displacement pump or the like may be used.
- liquid pump 23 a centrifugal type turbo pump that sucks and discharges the absorbing liquid by a centrifugal force obtained by the rotation of the impeller may be used.
- the check valve 24 is provided to prevent the third fluid from flowing back to the liquid pump 23 when the third fluid flows through the fluid flow path 2 as will be described later.
- the gas-liquid separator 25 temporarily stores off-gas and absorption liquid discharged from the recovery hole 2w of the fine channel device 1.
- the off-gas in the gas-liquid separator 25 is the remaining after the specific component in the gas circulated through the fluid flow path 2 by the compressor 21 is absorbed by the absorbing liquid circulated through the fluid flow path 2 by the liquid pump 23. It is a gas.
- the gas-liquid separator 25 temporarily stores off-gas in the ⁇ portion in FIG. 5 located on the upper side from the middle in the vertical direction in the gas-liquid separator 25.
- the specific component in the gas is the target component, and the remaining gas after the specific component is absorbed by the absorbing liquid is referred to as off-gas, but the specific component in the gas is an unnecessary component.
- the target gas may be a gas after the specific component is absorbed by the absorbing liquid.
- the absorption liquid in the gas-liquid separator 25 has the absorption liquid circulated in the fluid flow path 2 by the liquid pump 23 absorbed the specific component in the gas circulated in the fluid flow path 2 by the compressor 21. The later liquid.
- the gas-liquid separator 25 temporarily stores the absorption liquid in the ⁇ portion in FIG. 5 located at the lower part in the gas-liquid separator 25. And the gas-liquid separator 25 isolate
- the gas-liquid separator 25 discharges the off gas through the gate valve 26 or the back pressure valve 27.
- the gate valve 26 is provided for performing control to discharge off-gas.
- the back pressure valve 27 is provided for performing control to discharge off-gas when the pressure in the gas-liquid separator 25 rises to a constant pressure.
- the gas-liquid separator 25 discharges the absorbing liquid through the gate valve 28.
- the gate valve 28 is provided to perform control for discharging the absorbing liquid.
- the gas-liquid separator 25 also temporarily stores the third fluid.
- the third fluid a fluid that is insoluble and inert with respect to the off-gas and the absorption liquid and has a lower specific gravity than the absorption liquid is used.
- the gas-liquid separator 25 includes a ⁇ portion in FIG. 5 sandwiched between an ⁇ portion in which the off-gas is stored and a ⁇ portion in which the absorption liquid is stored in the gas-liquid separator 25. 3 fluids are stored.
- the third fluid is supplied from the gas-liquid separator 25 to the liquid pump 31.
- the liquid pump 31 sucks and discharges the third fluid, and thereby causes the third fluid to flow from the third supply hole 2 u of the microchannel device 1 to the fluid channel 2 via the gate valve 32.
- a liquid pump 31 is provided as an example of the third supply unit.
- the liquid pump 31 is a rotary positive displacement pump that sucks and discharges the third fluid by the rotational movement of the rotor and gears, or the suction and discharge of the third fluid by the reciprocating movement of the piston and plunger.
- a reciprocating positive displacement pump or the like that performs the above may be used.
- the liquid pump 31 a centrifugal type turbo pump that sucks and discharges the third fluid by a centrifugal force obtained by the rotation of the impeller may be used.
- the gate valve 32 is provided in order to control the third fluid to flow through the fluid flow path 2.
- the specific gravity of the third fluid is higher than the specific gravity of the absorption liquid
- the third fluid is stored in the ⁇ portion in FIG. 5 located in the lower part of the gas-liquid separator 25 and is located above the ⁇ portion.
- the absorbing solution is stored in the ⁇ portion in FIG.
- the gate valve 28 is connected to the ⁇ portion of the gas-liquid separator 25 in which the absorption liquid is stored
- the liquid pump 31 is connected to the gas-liquid separator 25 in which the third fluid is stored. Connect to ⁇ part.
- FIG. 6 is a diagram illustrating an operation when supplying the gas that is the first fluid and the absorbing liquid that is the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 at the same time. is there.
- the compressor 21 supplies the gas to the fluid flow path 2
- the liquid pump 23 supplies the absorption liquid to the fluid flow path 2
- the liquid pump 31 Is supplied to the fluid flow path 2. That is, the main flow step for flowing the gas and the absorption liquid to the fluid flow path 2 so that the specific component from the gas is absorbed by the absorption liquid, and the third fluid for increasing the pressure in the fluid flow path 2 as the fluid flow path
- the sub-distribution step to be distributed to 2 is executed simultaneously.
- the third fluid is supplied into the fluid flow path 2 as shown by four small rectangles with hatching in the fluid flow path 2 in FIG.
- the gate valve 26 is closed.
- the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased. Thereby, the absorption rate by the absorption liquid of the specific component in gas increases. The absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25. The third fluid is also discharged from the fluid flow path 2.
- the third fluid is insoluble and inert to the gas and the absorption liquid and has a specific gravity lower than that of the absorption liquid, the portion where the off-gas is stored in the gas-liquid separator 25 and the portion where the absorption liquid is stored Is temporarily stored in the portion sandwiched between the two. Then, the third fluid is supplied again to the liquid pump 31.
- the liquid pump 31 circulates the third fluid through the fluid flow path 2. By circulating the third fluid in this way, the amount of the third fluid used can be reduced.
- FIG. 7A and 7B show the operation when the supply of the gas that is the first fluid and the absorption liquid that is the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 are alternately performed.
- FIG. 7A and 7B a thick arrow indicates that a fluid is flowing in a path indicated by the arrow.
- the compressor 21 supplies gas to the fluid flow path 2, and the liquid pump 23 supplies absorption liquid to the fluid flow path 2.
- circulation step which distribute
- the gate valve 26 is opened and the back pressure valve 27 is closed.
- the off-gas discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is discharged from the gate valve 26 as it is. Thereby, the pressure in the fluid flow path 2 is kept low.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the liquid pump 31 supplies the third fluid to the fluid flow path 2.
- the third fluid is supplied into the fluid channel 2 as shown by an elongated rectangle with hatching in the fluid channel 2 in FIG. 7B. That is, a sub-circulation step is performed in which the third fluid for increasing the pressure in the fluid channel 2 is circulated through the fluid channel 2.
- the gate valve 26 is closed. Until the pressure in the fluid flow path 2 rises to a constant pressure by the function of the back pressure valve 27, the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the third fluid is also discharged from the fluid flow path 2. If the third fluid is insoluble and inert to the gas and the absorption liquid and has a specific gravity lower than that of the absorption liquid, the portion where the off-gas is stored in the gas-liquid separator 25 and the portion where the absorption liquid is stored Is temporarily stored in the portion sandwiched between the two. Then, the third fluid is supplied again to the liquid pump 31. The liquid pump 31 circulates the third fluid through the fluid flow path 2.
- the compressor 21 again supplies the gas to the fluid flow path 2, and the liquid pump 23 supplies the absorption liquid to the fluid flow path 2. That is, the main distribution step is executed again.
- the gate valve 26 is opened and the back pressure valve 27 is closed.
- the off-gas discharged from the fluid flow path 2 and temporarily stored in the upper portion of the gas-liquid separator 25 is allowed to escape from the gate valve 26 as it is, thereby returning the pressure in the fluid flow path 2 to a low pressure.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the liquid pump 31 supplies the third fluid to the fluid flow path 2.
- the third fluid is supplied into the fluid channel 2 as shown by an elongated rectangle with hatching in the fluid channel 2 in FIG. 7B. That is, the sub-distribution step is executed again.
- the gate valve 26 is closed.
- the pressure in the fluid flow path 2 rises to a constant pressure by the function of the back pressure valve 27, the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased again. Thereby, the absorption rate by the absorption liquid of the specific component in gas increases again.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the third fluid is also discharged from the fluid flow path 2. If the third fluid is insoluble and inert to the gas and the absorption liquid and has a specific gravity lower than that of the absorption liquid, the portion where the off-gas is stored in the gas-liquid separator 25 and the portion where the absorption liquid is stored Is temporarily stored in the portion sandwiched between the two. Then, the third fluid is supplied again to the liquid pump 31. The liquid pump 31 circulates the third fluid through the fluid flow path 2.
- FIG. 7A and the operation of FIG. 7B are repeated.
- the off gas is allowed to escape from the gate valve 26 as it is, which is an example of not limiting the discharge of the off gas.
- the function of the back pressure valve 27 makes it difficult for offgas to escape from the back pressure valve 27 until the pressure in the fluid flow path 2 rises to a constant pressure, which is an example of limiting offgas discharge. .
- the pressure in the fluid flow path 2 can be increased compared to the case where the third fluid is continuously supplied.
- the absorption rate can be increased.
- the supply of the gas as the first fluid and the absorption liquid as the second fluid and the supply of the third fluid to the same fluid flow path 2 are alternately performed. Described as what to do. However, the supply of the gas as the first fluid and the absorption liquid as the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 are simultaneously performed using the plurality of absorption devices 20. Is also possible. Specifically, the first absorption device 20 having the fluid flow path 2 and the second absorption device 20 having a fluid flow path 2 are different from the first absorption device 20. prepare.
- the fluid flow path 2 of the first absorption device 20 is an example of the first fine flow path of the present invention.
- the fluid flow path 2 of the second absorption device 20 is an example of a second fine flow path of the present invention. And with respect to the fluid flow path 2 of the 1st absorption device 20, and the fluid flow path 2 of the 2nd absorption device 20, respectively, the main distribution
- a third fluid that is a gas is supplied to the fluid flow path 2 in which a gas-liquid two-phase flow is formed.
- the third fluid is inert to the gas that is the first fluid and the absorbing liquid that is the second fluid.
- the third fluid is active against the gas that is the first fluid and the absorbent that is the second fluid.
- the third fluid may be the same as the specific component that is the target component in the gas.
- the first fluid is carbon dioxide-containing gas and the second fluid is water
- the third fluid may be nitrogen or the like.
- the third fluid may be nitrogen or the like.
- the third fluid will be described as a so-called inert gas.
- FIG. 8 is a diagram showing the configuration of the absorption device 20 in the second embodiment.
- the absorption device 20 in the second embodiment includes the fine channel device 1 including the fluid channel 2 and the temperature control channel 3 described with reference to FIGS. 1 to 4.
- a state in which only the gas that is the first fluid and the absorbing liquid that is the second fluid circulate in the fluid flow path 2 is indicated by a vertical stripe pattern.
- the fine channel device 1 as shown in FIG. 4, a plurality of layers having the fluid channel 2 and the temperature control channel 3 adjacent to the upper and lower sides of the fluid channel 2 are stacked. Only one layer having the fluid flow path 2 and the temperature control flow path 3 adjacent to the upper and lower sides thereof is schematically shown.
- a mechanism for supplying a temperature adjusting fluid to the temperature adjusting channel 3 and a mechanism for recovering the temperature adjusting fluid from the temperature adjusting channel 3 are actually connected to the fine channel device 1. Then, illustration of these mechanisms is omitted.
- the absorber 20 includes a compressor 21, a check valve 22, a liquid pump 23, and a check valve 24.
- the compressor 21 is connected to the first supply hole 2q of the fine channel device 1 through the check valve 22.
- the liquid pump 23 is connected to the second supply hole 2 s of the microchannel device 1 via the check valve 24.
- the absorber 20 includes a gas-liquid separator 25, a gate valve 26, a back pressure valve 27, a gate valve 28, a gate valve 40, a compressor 41, and a gate valve 42.
- the gas-liquid separator 25 is connected to the recovery hole 2 w of the fine channel device 1.
- the gate valve 26, the back pressure valve 27, and the gate valve 28 are each connected to the gas-liquid separator 25.
- the compressor 41 is connected to the back pressure valve 27.
- the compressor 41 is connected to an inert gas supply source (not shown) via the gate valve 40.
- the compressor 41 is connected to the third supply hole 2u of the microchannel device 1 through the gate valve 42.
- the gas-liquid separator 25 temporarily stores off-gas and absorption liquid discharged from the recovery hole 2w of the fine channel device 1.
- the off-gas in the gas-liquid separator 25 is the remaining after the specific component in the gas circulated through the fluid flow path 2 by the compressor 21 is absorbed by the absorbing liquid circulated through the fluid flow path 2 by the liquid pump 23. It is a gas.
- the gas-liquid separator 25 temporarily stores off-gas in the ⁇ portion in FIG. 8 located on the upper side from the middle in the vertical direction in the gas-liquid separator 25.
- the specific component in the gas is the target component
- the remaining gas after the specific component is absorbed by the absorbing liquid is referred to as off-gas, but the specific component in the gas is an unnecessary component.
- the target gas may be a gas after the specific component is absorbed by the absorbing liquid.
- the absorption liquid in the gas-liquid separator 25 has the absorption liquid circulated in the fluid flow path 2 by the liquid pump 23 absorbed the specific component in the gas circulated in the fluid flow path 2 by the compressor 21. The later liquid.
- the gas-liquid separator 25 temporarily stores the absorption liquid in the ⁇ portion in FIG. 8 located at the lower part in the gas-liquid separator 25. And the gas-liquid separator 25 isolate
- the gas-liquid separator 25 discharges the off gas through the gate valve 26 or the back pressure valve 27.
- the gate valve 26 is provided for performing control to discharge off-gas.
- the back pressure valve 27 is provided for performing control to discharge off-gas when the pressure in the gas-liquid separator 25 rises to a constant pressure.
- the gas-liquid separator 25 discharges the absorbing liquid through the gate valve 28.
- the gate valve 28 is provided to perform control for discharging the absorbing liquid.
- the off-gas temporarily stored in the gas-liquid separator 25 includes an inert gas that is a third fluid.
- the inert gas is initially supplied to the compressor 41 only from an inert gas supply unit (not shown), but after being stored in the gas-liquid separator 25, the gas-liquid separator 25 also supplies the compressor 41. Supplied with.
- the compressor 41 compresses the inert gas, and circulates the compressed inert gas from the third supply hole 2u of the microchannel device 1 to the fluid channel 2 via the gate valve 42.
- a compressor 41 is provided as an example of the third supply unit.
- the compressor 41 a screw type positive displacement compressor that compresses an inert gas by rotating a screw rotor, a reciprocating positive displacement compressor that compresses an inert gas by a reciprocating motion of a piston, or the like. May be used. Moreover, you may use the turbo type centrifugal compressor etc. which compress an inert gas with the centrifugal force obtained by rotation of an impeller.
- the gate valve 42 is provided in order to control the inert gas to flow through the fluid flow path 2.
- FIG. 9 is a diagram showing an operation when supplying the gas that is the first fluid and the absorbing liquid that is the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 at the same time. is there.
- the compressor 21 supplies the gas to the fluid flow path 2 and the liquid pump 23 supplies the absorption liquid to the fluid flow path 2, and at the same time, the compressor 41 is inactive.
- Gas is supplied to the fluid flow path 2. That is, the main flow step for flowing the gas and the absorption liquid to the fluid flow path 2 so that the specific component from the gas is absorbed by the absorption liquid, and the inertness as the third fluid for increasing the pressure in the fluid flow path 2
- the sub-circulation step for causing the gas to flow through the fluid flow path 2 is performed simultaneously.
- the inert gas is supplied into the fluid channel 2 as shown by the four small rectangles with hatching in the fluid channel 2 in FIG.
- the gate valve 26 is closed.
- the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased. Thereby, the absorption rate by the absorption liquid of the specific component in gas increases.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the inert gas is also discharged from the fluid flow path 2. This inert gas is temporarily stored in the upper part of the gas-liquid separator 25 in the off gas. Then, this inert gas is supplied again to the compressor 41 via the back pressure valve 27.
- the compressor 41 circulates an inert gas through the fluid flow path 2. Thus, the amount of inert gas used can be reduced by circulating the inert gas.
- FIGS. 10A and 10B show the operation when the supply of the gas that is the first fluid and the absorption liquid that is the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 are alternately performed.
- FIG. in FIGS. 10A and 10B a thick arrow indicates that a fluid is flowing in a path indicated by the arrow.
- the compressor 21 supplies gas to the fluid flow path 2, and the liquid pump 23 supplies absorption liquid to the fluid flow path 2.
- circulation step which distribute
- the gate valve 26 is opened and the back pressure valve 27 is closed.
- the off-gas discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is discharged from the gate valve 26 as it is. Thereby, the pressure in the fluid flow path 2 is kept low.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the compressor 41 supplies an inert gas to the fluid flow path 2. Accordingly, the inert gas is supplied into the fluid flow path 2 as shown by an elongated rectangle with hatching in the fluid flow path 2 in FIG. 10B. That is, a sub-circulation step is performed in which an inert gas for increasing the pressure in the fluid channel 2 is circulated through the fluid channel 2.
- the gate valve 26 is closed. Until the pressure in the fluid flow path 2 rises to a constant pressure by the function of the back pressure valve 27, the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25. Further, the inert gas is also discharged from the fluid flow path 2. This third fluid is temporarily stored in the upper part of the gas-liquid separator 25 by being included in the off-gas. Then, this inert gas is supplied again to the compressor 41 via the back pressure valve 27. The compressor 41 circulates an inert gas through the fluid flow path 2.
- the compressor 21 again supplies the gas to the fluid flow path 2, and the liquid pump 23 supplies the absorption liquid to the fluid flow path 2. That is, the main distribution step is executed again.
- the gate valve 26 is opened and the back pressure valve 27 is closed.
- the off-gas discharged from the fluid flow path 2 and temporarily stored in the upper portion of the gas-liquid separator 25 is allowed to escape from the gate valve 26 as it is, thereby returning the pressure in the fluid flow path 2 to a low pressure.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25.
- the compressor 41 supplies an inert gas to the fluid flow path 2. Accordingly, the inert gas is supplied into the fluid flow path 2 as shown by an elongated rectangle with hatching in the fluid flow path 2 in FIG. 10B. That is, the sub-distribution step is executed again.
- the gate valve 26 is closed. Until the pressure in the fluid flow path 2 rises to a constant pressure by the function of the back pressure valve 27, the off-gas that is discharged from the fluid flow path 2 and temporarily stored in the upper part of the gas-liquid separator 25 is By making it difficult to escape from the pressure valve 27, the pressure in the fluid flow path 2 is increased again. Thereby, the absorption rate by the absorption liquid of the specific component in gas increases again.
- the absorbing liquid discharged from the fluid flow path 2 is temporarily stored in the lower part in the gas-liquid separator 25. Further, the inert gas is also discharged from the fluid flow path 2. This inert gas is temporarily stored in the upper part of the gas-liquid separator 25 in the off gas. Then, this inert gas is supplied again to the compressor 41 via the back pressure valve 27. The compressor 41 circulates an inert gas through the fluid flow path 2.
- the off gas is allowed to escape from the gate valve 26 as it is, which is an example of not limiting the discharge of the off gas.
- the function of the back pressure valve 27 makes it difficult for offgas to escape from the back pressure valve 27 until the pressure in the fluid flow path 2 rises to a constant pressure, which is an example of limiting offgas discharge. .
- the pressure in the fluid flow path 2 can be increased compared to the case where the third fluid is continuously supplied.
- the absorption rate can be increased.
- the supply of the gas as the first fluid and the absorption liquid as the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 are performed. It was described as being performed alternately. However, the supply of the gas as the first fluid and the absorption liquid as the second fluid to the fluid flow path 2 and the supply of the third fluid to the fluid flow path 2 are simultaneously performed using the plurality of absorption devices 20. Is also possible. Specifically, the first absorption device 20 having the fluid flow path 2 and the second absorption device 20 having a fluid flow path 2 are different from the first absorption device 20. prepare. Then, the main flow step shown in FIG. 10A and the sub flow step shown in FIG.
- 10B are alternately performed for the fluid flow path 2 of the first absorption device 20 and the fluid flow path 2 of the second absorption device 20, respectively.
- the gas and the absorption liquid are supplied to the fluid flow path in the first absorption device 20 as shown in FIG. 10A. 2 to distribute. That is, the sub-circulation step is performed on the fluid flow path 2 of the second absorption device 20 in parallel with the execution of the main flow step on the fluid flow path 2 of the first absorption device 20. In this case, the process can be continued even when the pressure in the fluid flow path 2 is increased.
- the third fluid is fluid. It was made to supply to the flow path 2. Thereby, the absorption amount of the specific component per unit volume of the absorption liquid increases, and as a result, the absorption rate increases.
- the third fluid when the third fluid is supplied to the fluid passage 2 from a state where the inside of the fluid passage 2 is at a low pressure, the inside of the fluid passage 2 is boosted by the back pressure valve 27 on the outlet side. Thereafter, the supply of the third fluid is stopped, the inside of the fluid flow path 2 is returned to a low pressure by the outlet side valve 26, and the gas as the first fluid and the absorption liquid as the second fluid are circulated in the fluid flow path 2. Then, the third fluid is supplied again and the pressure in the fluid flow path 2 is increased. Thereby, the absorption operation for increasing the amount of absorption by increasing the pressure can be performed semi-continuously, so that the pressure in the fluid flow path 2 can be increased compared to the case where the third fluid is continuously supplied. And the absorption rate can be increased.
- the step of preparing a fine flow path and the absorption liquid as the second fluid absorb the absorption target component from the gas as the first fluid including the absorption target component.
- a fluid having at least one of an insoluble property and an inert property with respect to at least one of the gas and the absorbing liquid may be circulated as the third fluid in the fine channel.
- the gas and the absorption liquid are circulated through the fine flow path without restricting the discharge of the gas and the absorption liquid from the fine flow path.
- the sub distribution step In a state where the discharge of the gas and the absorbing liquid from the fine channel is restricted, the third fluid is circulated through the fine channel, and the sub-circulation step is performed, and then the main circulation step is performed. You may execute again.
- a first fine flow path and a second fine flow path different from the first fine flow path are prepared as the fine flow path.
- the main flow step is performed again for the first fine flow channel, and the sub-flow step is performed for the second fine flow channel.
- the main flow step is performed again on the second micro flow channel, and the second micro flow is performed in parallel with the main flow step performed on the first micro flow channel.
- the sub-distribution step may be performed on the road.
- a discharge step of discharging the mixture of the gas, the absorption liquid, and the third fluid from the fine flow path, and the third from the discharged mixture may be circulated through the fine channel.
- the absorption device includes a first supply unit that supplies a gas as a first fluid containing a component to be absorbed, and a second supply unit that supplies an absorption liquid as a second fluid. And a fine channel that absorbs the component to be absorbed from the gas to the absorbing liquid while circulating the gas supplied by the first supplying unit and the absorbing liquid supplied by the second supplying unit And a third supply part for supplying a third fluid for increasing the pressure in the fine channel to the fine channel.
- the absorption device is supplied as the fine flow path by the gas supplied from the first supply unit, the absorption liquid supplied by the second supply unit, and the third supply unit. You may provide the several fine flow path which distribute
- the absorption rate increases and the absorption amount per unit volume of the absorption liquid increases.
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Abstract
Description
第1実施例では、気液二相流が形成されている流体流路2に、液体である第3流体を供給する。ここで、第3流体は、第1流体である気体及び第2流体である吸収液に対して不溶性かつ不活性であることが望ましい。但し、これは、第3流体が第1流体である気体及び第2流体である吸収液に対して可溶性であったり活性であったりすることを除外するものではない。例えば、第1流体を二酸化炭素含有ガスとし、第2流体を水とした場合、第3流体はデカン、ドデカン、又は、ヘキサデカン等とすればよい。或いは、第1流体を二酸化炭素含有ガスとし、第2流体をアミン化合物を主成分とする吸収液とした場合も、第3流体はデカン、ドデカン、又は、ヘキサデカン等としてよい。
第2実施例では、気液二相流が形成されている流体流路2に、気体である第3流体を供給する。ここで、第3流体は、第1流体である気体及び第2流体である吸収液に対して不活性であることが望ましい。但し、これは、第3流体が第1流体である気体及び第2流体である吸収液に対して活性であることを除外するものではない。また、第3流体は、気体中の目的の成分である特定成分と同じものであってもよい。例えば、第1流体を二酸化炭素含有ガスとし、第2流体を水とした場合、第3流体は窒素等とすればよい。或いは、第1流体を二酸化炭素含有ガスとし、第2流体をアミン化合物を主成分とする吸収液とした場合も、第3流体は窒素等としてよい。以下では、第3流体を所謂不活性ガスとして説明する。
前記実施の形態及び前記実施例をまとめると、以下の通りである。
Claims (7)
- 微細流路を用意するステップと、
被吸収成分を含む第1流体としての気体から前記被吸収成分を第2流体としての吸収液に吸収させるように前記気体及び前記吸収液を前記微細流路に流通させる主流通ステップと、
前記気体及び前記吸収液を前記微細流路に流通させた状態で、当該微細流路内の圧力を高くするための第3流体を当該微細流路に流通させる副流通ステップとを含む、吸収方法。 - 請求項1に記載の吸収方法において、
前記副流通ステップでは、前記気体及び前記吸収液の少なくとも一方に対して不溶性及び不活性の少なくとも一方の性質を有する流体を前記第3流体として前記微細流路に流通させる、吸収方法。 - 請求項1又は2に記載の吸収方法において、
前記主流通ステップでは、前記気体及び前記吸収液の前記微細流路からの排出に制限をかけない状態で、当該気体及び当該吸収液を前記微細流路に流通させ、
前記副流通ステップでは、前記気体及び前記吸収液の前記微細流路からの排出に制限をかけた状態で、前記第3流体を前記微細流路に流通させ、
前記副流通ステップを実行した後に、前記主流通ステップを再び実行する、吸収方法。 - 請求項3に記載の吸収方法において、
前記微細流路を用意するステップでは、前記微細流路として、第1の微細流路と、その第1の微細流路とは異なる第2の微細流路とを用意し、
前記第1の微細流路に対して前記副流通ステップを実行した後に当該第1の微細流路に対して前記主流通ステップを再び実行し、
前記第2の微細流路に対して前記副流通ステップを実行した後に当該第2の微細流路に対して前記主流通ステップを再び実行し、
前記第1の微細流路に対して前記主流通ステップを実行するのと並行して、前記第2の微細流路に対して前記副流通ステップを実行する、吸収方法。 - 請求項1又は2に記載の吸収方法において、
前記副流通ステップの後に、前記気体、前記吸収液及び前記第3流体の混合物を前記微細流路から排出する排出ステップと、
排出された前記混合物から前記第3流体を分離する分離ステップとを更に含み、
前記副流通ステップでは、分離された前記第3流体を前記微細流路に流通させる、吸収方法。 - 被吸収成分を含む第1流体としての気体を供給する第1の供給部と、
第2流体としての吸収液を供給する第2の供給部と、
前記第1の供給部により供給される前記気体と前記第2の供給部により供給される前記吸収液とを流通させながら前記気体から前記吸収液へ前記被吸収成分を吸収させる微細流路と、
前記微細流路内の圧力を高めるための第3流体を前記微細流路へ供給する第3の供給部と、を備えた、吸収装置。 - 請求項6に記載の吸収装置において、
前記微細流路として、前記第1の供給部により供給される前記気体と、前記第2の供給部により供給される前記吸収液と、前記第3の供給部により供給される前記第3流体とを、それぞれ流通させる複数の微細流路を備える、吸収装置。
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US14/888,524 US9914089B2 (en) | 2013-07-04 | 2014-06-20 | Absorption method and absorption device |
CN201480034581.9A CN105339072B (zh) | 2013-07-04 | 2014-06-20 | 吸收方法以及吸收装置 |
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US10525405B2 (en) | 2014-07-31 | 2020-01-07 | Kobe Steel, Ltd. | Component transfer processing method and component transfer processing device |
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CN114028912A (zh) * | 2021-11-23 | 2022-02-11 | 鄂尔多斯市西北能源化工有限责任公司 | 含硫化氢气相色谱尾气的吸收净化装置 |
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CN105339072B (zh) | 2017-08-15 |
KR101900140B1 (ko) | 2018-09-18 |
EP3017858A1 (en) | 2016-05-11 |
US20160107115A1 (en) | 2016-04-21 |
US9914089B2 (en) | 2018-03-13 |
JP6117027B2 (ja) | 2017-04-19 |
KR20160012226A (ko) | 2016-02-02 |
EP3017858A4 (en) | 2017-03-01 |
JP2015013247A (ja) | 2015-01-22 |
CN105339072A (zh) | 2016-02-17 |
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