CN104039408A - Evaporator, evaporation system, and evaporation method - Google Patents
Evaporator, evaporation system, and evaporation method Download PDFInfo
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- CN104039408A CN104039408A CN201280066442.5A CN201280066442A CN104039408A CN 104039408 A CN104039408 A CN 104039408A CN 201280066442 A CN201280066442 A CN 201280066442A CN 104039408 A CN104039408 A CN 104039408A
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- dispersion plate
- heat
- material liquid
- liquid
- vaporising device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0064—Feeding of liquid into an evaporator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
- B01D1/065—Evaporators with vertical tubes by film evaporating
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- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
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Abstract
The present invention relates to an evaporator that includes: a plurality of heating tubes; an upper tube plate that supports the plurality of heating tubes with spaces therebetween; and a first dispersion plate provided above the upper tube plate. On the first dispersion plate are provided two or more liquid through holes constituted such that a starting material liquid passes through and two or more gas through holes constituted such that a gas passes through. Viewed from the direction that the plurality of heating tubes extend, the plurality of liquid through holes is formed in positions that overlap regions in the upper tube plate in which the heating tubes are not provided and the plurality of gas through holes is formed in positions that overlap regions in which the plurality of heating tubes is provided. The plurality of heating tubes has protruding parts that protrude from the upper surface of the upper tube plate. According to the present invention, an evaporator in which blockage in the heat tubes can be suppressed and evaporation of a starting material liquid can be carried out smoothly is provided.
Description
Technical field
The present invention relates to vaporising device, vapo(u)rization system and method for evaporating.
The application, based on January 12nd, 2012, advocates priority No. 2012-004130 in the Japanese Patent Application of Japanese publication, and its content is incorporated herein.
Background technology
As the vaporising device that makes material liquid evaporation, the vaporising device of recording in known patent document 1.The vaporising device of patent documentation 1 is the liquid film type heat exchanger having under the vertical current of a plurality of heat-transfer pipes.This vaporising device forms in such a way: material liquid flow into the inside of a plurality of heat-transfer pipes, forms under the state of film of material liquid on the internal face of described a plurality of heat-transfer pipes, by thermal medium, material liquid is evaporated described a plurality of heat-transfer pipes heating.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2002-284752 communique
Summary of the invention
Invent problem to be solved
In the vaporising device of patent documentation 1, in order to be suppressed at the residue of the residual material liquid of internal face of a plurality of heat-transfer pipes, and formed at the internal face of a plurality of heat-transfer pipes under the state of film of material liquid, evaporate described material liquid.Material liquid is supplied in together with solvent to a plurality of heat-transfer pipes in this process, as a medium part, uses gas.Material liquid and gas stream are supplied in to the liquid film type heat exchanger under vertical current.In the case, the thickness of the film of the material liquid of the internal face of a plurality of heat-transfer pipes changes according to the configuration of the supply unit of material liquid and gas.If the thickness attenuation of the film of material liquid, by the evaporation of described material liquid, the internal face of heat-transfer pipe exposes sometimes.If exposing likely at the residue of the described residual material liquid of internal face exposing, internal face causes the obstruction of heat-transfer pipe.
The present invention In view of the foregoing completes, and its object is to provide can be by forming good vaporising device, vapo(u)rization system and the method for evaporating that liquid film suppresses the obstruction of heat-transfer pipe and the evaporation of material liquid is carried out smoothly that flow down.
For solving the method for problem
In order to achieve the above object, a mode of vaporising device of the present invention is characterised in that, comprise: a plurality of heat-transfer pipes, the tube sheet of described a plurality of heat-transfer pipes being vacated to interval mutually and supporting, with the first dispersion plate that is arranged at the top of described tube sheet, at above-mentioned the first dispersion plate, from the bearing of trend of described a plurality of heat-transfer pipes, observe, a plurality of liquid-through holes that material liquid is passed through are formed at the position with the region overlapping that described heat-transfer pipe is not set of described tube sheet, and a plurality of passages that gas is passed through are formed at the position overlapping with described a plurality of heat-transfer pipes, described a plurality of heat-transfer pipe has the protuberance protruding above described tube sheet.
A mode of the present invention is characterised in that, in the formation of the face of the tube sheet side of described the first dispersion plate the part of described liquid-through hole be provided with the nozzle protruding towards described tube sheet side from this.
A mode of the present invention is characterised in that have towards described the first dispersion plate and make described material liquid and the inflow portion of described gas inflow.
A mode of the present invention is characterised in that, between described the first dispersion plate and described inflow portion, be provided with more than 1 dispersion plate, at described dispersion plate, be provided with a plurality of liquid-through holes that the described material liquid that comes from described inflow portion is passed through, from the bearing of trend of described a plurality of heat-transfer pipes, observe, be at least disposed at described the first dispersion plate directly over a plurality of liquid-through holes of described dispersion plate be configured in the nonoverlapping position of a plurality of passages with described the first dispersion plate.
Preferably described 1 above dispersion plate is below 4.
A mode of the present invention is characterised in that, there is the incorporating section of taking in described tube sheet and described the first dispersion plate, between described inflow portion and described the first dispersion plate, be provided with the second dispersion plate, at described the second dispersion plate, be provided with and make to come from a plurality of liquid-through holes that the material liquid of described inflow portion flows into towards the described liquid-through hole that is formed at described the first dispersion plate, with a plurality of breather pipes that the gas that comes from described inflow portion is passed through, between the peripheral part of described the second dispersion plate and the internal face of described incorporating section, formed gap, from the bearing of trend of described a plurality of heat-transfer pipes, observe, a plurality of breather pipes of described the second dispersion plate are configured to circular concentric, the central part side that a plurality of breather pipes of described the second dispersion plate are described the second dispersion plate in described inflow portion side has notch part.
A mode of the present invention is characterised in that, has the transfer mechanism that the material liquid that flows out from described a plurality of heat-transfer pipes is transferred to described inflow portion.
A mode of the present invention is characterised in that, at the front end of described protuberance, formed ditch.
A mode of the present invention is characterised in that, from the bearing of trend of described heat-transfer pipe, observes, and the area of described heat-transfer pipe is the area more than area of passage of described the first dispersion plate.
A mode of the present invention is characterised in that, from the bearing of trend of this heat-transfer pipe, observes, and the center of described heat-transfer pipe is consistent with the center of the passage of described the first dispersion plate.
A mode of the present invention is characterised in that, described material liquid comprises cyclohexanone oxime.
A mode of vapo(u)rization system of the present invention is characterised in that, pump, the decompression distillation device of a remaining part that distills described residue and the condenser of the raw material that condensation is removed by described decompression distillation device distillation that it has vaporising device, circulate the part of the residue of the unstrpped gas that generates by described vaporising device in described vaporising device.
A mode of method of evaporating of the present invention is characterised in that, use described vaporising device to make described material liquid heating evaporation, by obtaining, under the pressure of residue after the unstrpped gas pressure when lower than heating evaporation, distill, and by by distilling the unstrpped gas condensation of removing, reclaim thus the material liquid comprising in described residue.
A mode of method of evaporating of the present invention is characterised in that, it is evaporating cyclohexanone oxime and by the method for evaporating of the mixed liquor of the solvent of its dilution, described solvent is alcohol, with the whole evaporating surface in described vaporising device, become the mode of the state at least being soaked by cyclohexanone oxime, make the cyclohexanone oxime of the evaporating surface lower end under the pressure of described mixed liquor below 1060torr and in described vaporising device flow down the per unit length that liquid measure is evaporating surface lower end (m) for evaporating under more than 170kg/ hour condition, with regard to described distillation, under the decompression of 1.4kPa～10kPa, distill.
That is, the present invention relates to following content.
(1) vaporising device, is characterized in that, comprises:
A plurality of heat-transfer pipes,
The tube sheet that the mode supporting so that described a plurality of heat-transfer pipes are vacated to interval mutually forms and
Be arranged at the first dispersion plate of the top of described tube sheet,
At described the first dispersion plate, be provided with more than 2 liquid-through hole that the mode so that material liquid is passed through forms and more than 2 passage forming in the mode that gas is passed through, from the bearing of trend of described a plurality of heat-transfer pipes, observe, described a plurality of liquid-through hole is formed at the position with the region overlapping that described heat-transfer pipe is not set of described tube sheet, and described a plurality of passage is formed at and the position that is provided with the region overlapping of described a plurality of heat-transfer pipes
Described a plurality of heat-transfer pipe has the protuberance that the mode to protrude above described tube sheet forms.
(2) according to the vaporising device (1) described, it is characterized in that,
For described the first dispersion plate, at the face of the tube sheet side of described the first dispersion plate, be provided with nozzle,
Described nozzle protrudes towards described tube sheet side direction from the tube sheet side of described the first dispersion plate,
Described nozzle be arranged at described the first dispersion plate tube sheet side face formation the part of described liquid-through hole.
(3) according to the vaporising device (1) or (2) described, it is characterized in that,
Also have with towards described the first dispersion plate and make described material liquid and inflow portion that mode that described gas flows into forms.
(4) according to the vaporising device (3) described, it is characterized in that,
Between described the first dispersion plate and described inflow portion, be provided with more than 1 dispersion plate,
At described more than 1 dispersion plate, be provided with a plurality of liquid-through holes that the mode so that the described material liquid that comes from described inflow portion is passed through forms,
From the bearing of trend of described a plurality of heat-transfer pipes, observe, in described 1 above dispersion plate be at least disposed at described the first dispersion plate directly over a plurality of liquid-through holes of dispersion plate be configured in the position with the region overlapping that a plurality of passages are not set of described the first dispersion plate.
(5) according to the vaporising device (3) or (4) described, it is characterized in that,
Also there is to take in the incorporating section that the mode of described tube sheet and described the first dispersion plate forms,
Between described inflow portion and described the first dispersion plate, be provided with the second dispersion plate,
At described the second dispersion plate, be provided with so that a plurality of breather pipes that come from a plurality of liquid-through holes that mode that the material liquid of described inflow portion flows into towards the described liquid-through hole that is formed at described the first dispersion plate forms and form in the mode that the gas that comes from described inflow portion is passed through
Between the peripheral part of described the second dispersion plate and the internal face of described incorporating section, formed gap,
From the bearing of trend of described a plurality of heat-transfer pipes, observe, a plurality of breather pipes of described the second dispersion plate are configured to circular concentric,
The central part side that a plurality of breather pipes of described the second dispersion plate are described the second dispersion plate in described inflow portion side has notch part.
(6) according to the vaporising device described in any one in (3)～(5), it is characterized in that,
Also have so that the transfer mechanism that the mode that the material liquid flowing out from described a plurality of heat-transfer pipes is transferred to described inflow portion forms.
(7) according to the vaporising device described in any one in (1)～(6), it is characterized in that,
Front end at described protuberance has formed ditch.
(8) according to the vaporising device described in any one in (1)～(7), it is characterized in that,
From the bearing of trend of described heat-transfer pipe, observe, the area of the heat-transfer pipe in described 2 above heat-transfer pipes is the area being arranged at more than the area of passage of described the first dispersion plate directly over it.
(9) according to the vaporising device described in any one in (1)～(8), it is characterized in that,
From the bearing of trend of described heat-transfer pipe, observe, the center of described heat-transfer pipe is consistent with the center of passage of described the first dispersion plate directly over being arranged at it.
(10) according to the vaporising device described in any one in (1)～(9), it is characterized in that,
Described material liquid comprises cyclohexanone oxime.
(11) vapo(u)rization system, is characterized in that, it has:
Vaporising device described in any one in (1)～(10),
So that the pump that the mode that a part for the residue of the unstrpped gas generating by described vaporising device circulates in described vaporising device forms,
With distill decompression distillation device that the mode of the remainder of described residue forms and
The condenser that the mode of the raw material of removing by described decompression distillation device distillation with condensation forms.
(12) method of evaporating, is characterized in that,
Vaporising device described in any one in use (1)～(10) makes described material liquid heating evaporation, by obtaining, under the pressure of the pressure of residue residual after unstrpped gas when lower than described heating evaporation, distill, and by by distilling the unstrpped gas condensation of removing, reclaim thus the material liquid comprising in described residue.
(13) according to the method for evaporating (12) described, it is characterized in that,
Described material liquid is cyclohexanone oxime and by the mixed liquor of the solvent of its dilution, described solvent is alcohol, with the whole evaporating surface in described vaporising device, become the mode of the state at least being soaked by cyclohexanone oxime, making the cyclohexanone oxime of the evaporating surface lower end under the pressure of described mixed liquor below 1060torr and in described vaporising device flow down liquid measure is that the per unit length 1m of evaporating surface lower end evaporates under more than 170kg/ hour condition, and described distillation is carried out under the decompression of 1.4kPa～10kPa.
Invention effect
According to a mode of the present invention, can provide following vaporising device, vapo(u)rization system and method for evaporating: when the liquid film type heat exchanger evaporation material liquid under utilizing vertical current and gas, can suppress the obstruction of heat-transfer pipe and the evaporation of material liquid is carried out smoothly by forming the good liquid film that flows down.
Accompanying drawing explanation
Fig. 1 means the vaporising device schematic diagram of the 1st embodiment of the present invention.
Fig. 2 means the schematic diagram of the configuration status of a plurality of passages in first dispersion plate of vaporising device of the 1st embodiment of the present invention.
Fig. 3 means the schematic diagram of the vaporising device of the 2nd embodiment of the present invention.
Fig. 4 A means the schematic diagram of the configuration status of a plurality of breather pipes in second dispersion plate of vaporising device of the 2nd embodiment of the present invention.
Fig. 4 B means the schematic diagram of the configuration status of 2 above breather pipes in second dispersion plate of vaporising device of the 2nd embodiment of the present invention.
Fig. 5 A means the schematic diagram of variation of the protuberance of heat-transfer pipe.
Fig. 5 B means the schematic diagram of variation of the protuberance of heat-transfer pipe.
Fig. 5 C means the schematic diagram of variation of the protuberance of heat-transfer pipe.
Fig. 6 means the schematic diagram of an example of vapo(u)rization system.
The specific embodiment
With reference to the accompanying drawings embodiments of the present invention are described, but the present invention is not defined in following embodiment.
In following all accompanying drawings, the size of each inscape of appropriate change, ratio etc. for ease of observing accompanying drawing.In addition, in the following description and accompanying drawing, for the identical symbol of identical or corresponding element annotation, and the repetitive description thereof will be omitted.
(the 1st embodiment)
Fig. 1 means the longitudinal section of the vaporising device 1 of the 1st embodiment of the present invention.
As shown in Figure 1, vaporising device 1 comprise at the bottom of a plurality of heat-transfer pipes 2, upper tube sheet 3, lower tube sheet 4, the first dispersion plate 5, dispersion plate 6, incorporating section 7, tower 8, material liquid supplying tubing (inflow portion) 9, gas supplying tubing (inflow portion) 10 and thermal medium supplying tubing 11 and form.
Vaporising device 1 becomes following formation, at the internal face of a plurality of heat-transfer pipes 2, formed under the state of film of material liquid, the gas that comes from gas supplying tubing 10, heats described a plurality of heat-transfer pipe by thermal medium described material liquid is evaporated by flowing into the inside of a plurality of heat-transfer pipes 2 from a plurality of passage 52.
In incorporating section, 7 bottom is connected with discoideus upper tube sheet 3 and lower tube sheet 4.In upper tube sheet 3 and lower tube sheet 4, mutually vacate interval and be supported with a plurality of heat-transfer pipes 2.A plurality of heat-transfer pipes 2 have the protuberance 2a protruding above upper tube sheet 3.The first dispersion plate 5 is 7 inside in incorporating section, is arranged at the top of upper tube sheet 3.
Fig. 2 means the schematic diagram of the configuration status of a plurality of passages 52 in the first dispersion plate 5 of vaporising device 1.Fig. 2 is the top view of the first dispersion plate 5, in order conveniently to dot incorporating section 7.
As shown in Figure 2, incorporating section 7 is overlooked as circle.A plurality of liquid-through holes 51 that material liquid is passed through and a plurality of passages 52 that gas is passed through on the first dispersion plate 5, have been formed.The shape of liquid-through hole 51 is overlooked as circle.The shape of passage 52 is overlooked as circle.In overlooking, in the first dispersion plate 5, each passage 52 is the mode alternate configurations between 2 liquid-through holes 51 with 1 passage 52.The configuration status of a plurality of passages 52 shown in present embodiment is an example, is not limited to this, can adopt various configuration statuses.
Turn back in Fig. 1, from the bearing of trend of a plurality of heat-transfer pipes 2, observe, a plurality of liquid-through holes 51 are disposed at the position with the region overlapping that heat-transfer pipe 2 is not set of upper tube sheet 3.Each liquid-through hole 51 is above the substantial middle between 2 adjacent heat-transfer pipes 2 and upper tube sheet 3.As long as liquid directly do not enter heat-transfer pipe 2 from each liquid-through hole 51, the central authorities that each liquid-through hole 51 can be between 2 adjacent heat-transfer pipes 2, also can depart from.
Face in upper tube sheet 3 sides of the first dispersion plate 5 is provided with nozzle 51a.Nozzle 51a protrudes towards upper tube sheet 3 side directions from the first dispersion plate 5.Nozzle 51a be arranged at the first dispersion plate 5 upper tube sheet 3 sides face formation the part of liquid-through hole 51.
From the bearing of trend of a plurality of heat-transfer pipes 2, observe, a plurality of passages 52 are disposed at and the position that is provided with the region overlapping of a plurality of heat-transfer pipes 2.Distance between the upper end of the lower end of a plurality of passages 52 and a plurality of heat-transfer pipe 2 (interval of the bearing of trend of heat-transfer pipe 2) is for example the size of 1/50～1/5 scope with respect to the internal diameter of incorporating section 7.Distance between the upper end of the lower end of preferred a plurality of passage 52 and a plurality of heat-transfer pipe 2 is the size of 1/30～1/10 scope with respect to the internal diameter of incorporating section 7.
From the bearing of trend of described a plurality of heat-transfer pipes 2, observe, it is circular that the shape of the shape of heat-transfer pipe 2 and passage 52 is similarly.The internal diameter of heat-transfer pipe 2 is for example the size of 20mm～100mm scope.The internal diameter of preferred tube 2 is the size of 35mm～70mm scope.
Shape while observing passage 52 and heat-transfer pipe 2 from the bearing of trend of a plurality of heat-transfer pipes 2 is not limited to circle, also can adopt the various shapes such as oval.But, for gas is smoothly through, while preferably observing passage 52 and heat-transfer pipe 2 from the bearing of trend of a plurality of heat-transfer pipes 2, be shaped as circle.
From the bearing of trend of heat-transfer pipe 2, observe, passage 52 center is consistent with the center of heat-transfer pipe 2 directly over being arranged at it.
From the bearing of trend of heat-transfer pipe 2, observe, the passage 52 center being arranged at directly over it also can be offset slightly from the center of heat-transfer pipe 2.That is, from the bearing of trend of a plurality of heat-transfer pipes 2, observe, as long as each a plurality of passages 52 are disposed at and the position that is provided with the region overlapping of each a plurality of heat-transfer pipes 2.
From the bearing of trend of described heat-transfer pipe 2, observe, the area of heat-transfer pipe 2 is the area that is greater than the area that is arranged at the passage 52 directly over it.Area while being not limited to observe a plurality of heat-transfer pipe 2 from the bearing of trend of described a plurality of heat-transfer pipes 2 is the area that is greater than the area that is arranged at the passage 52 directly over it, also can for be arranged at it directly over the identical area of the area of passage 52.That is the area while, observing a plurality of heat-transfer pipe 2 from the bearing of trend of described a plurality of heat-transfer pipes 2 is the area being arranged at more than the area of the passage 52 directly over it.
Area while in addition, observing more than 2 heat-transfer pipes 2 from the bearing of trend of described more than 2 heat-transfer pipe 2 is preferably the area below 2 times of the area that is arranged at the passage 52 directly over it.
Material liquid supplying tubing 9 is connected in the upper portion side wall of incorporating section 7.Gas supplying tubing 10 is connected in the upper wall of incorporating section 7.Dispersion plate 6 is arranged between material liquid supplying tubing 9 and gas supplying tubing 10 and the first dispersion plate 5.
At dispersion plate 6, formed a plurality of separatory hole 61 of the material liquid that comes from material liquid supplying tubing 9 being carried out to separatory.In Fig. 1, from the bearing of trend of a plurality of heat-transfer pipes 2, to observe, a plurality of separatory hole 61 is disposed at the position overlapping with a plurality of liquid-through holes 51, but is not limited to this.From the bearing of trend of a plurality of heat-transfer pipes 2, observe, as long as a plurality of separatory hole 61 is disposed at and the nonoverlapping position of a plurality of passages 52.
In the formation of the face of the first dispersion plate 5 sides of dispersion plate 6 part in separatory hole 61 be provided with the nozzle 61a protruding towards the first dispersion plate 5 sides from described.
Between the peripheral part of dispersion plate 6 and the internal face of incorporating section 7, there is gap 62, but be not limited to this.Vaporising device 1 is so long as flow to the below of dispersion plate 6 with the gas that comes from gas supplying tubing 10, and the mode that flows into the inside of a plurality of heat-transfer pipes 2 forms.
In the present embodiment, as material liquid, use the mixed liquor of the solvent of cyclohexanone oxime and the described cyclohexanone oxime of dilution.Described mixed liquor is supplied in vaporising device 1 through material liquid supplying tubing 9.
As described solvent, can use lower than cyclohexanone oxime boiling point and can dissolve and dilute the solvent of cyclohexanone oxime.Can enumerate such as the saturated alcohols that is selected from the carbon number 1～8 of methyl alcohol, ethanol, propyl alcohol, the tert-butyl alcohol, 1 hexanol, 1 octanol etc., benzene, toluene etc., wherein particular methanol or ethanol.In addition, the mixed proportion of cyclohexanone oxime and solvent, for by weight, is advisable for approximately 100: 1～1: 10.
In addition, preferably, when described mixed liquor is transferred to vaporising device 1 via material liquid supplying tubing 9, from gas supplying tubing 10, the inert gases such as the lower alcohols such as methyl alcohol and nitrogen are directed into vaporising device 1 simultaneously.
In addition, use nitrogen as inert gas.Inert gas is not limited to nitrogen, can use various inert gases.
Thermal medium supplying tubing 11 is connected in the lower sides of incorporating section 7.Thermal medium supplying tubing 11 makes thermal medium flow into the outside wall surface of heat-transfer pipe 2.As thermal medium, use such as steam etc.
The vaporising device 1 of present embodiment is following formation: make the material liquid that comes from material liquid supplying tubing 9 flow into the inside of heat-transfer pipe 2 at the film of the internal face formation material liquid of a plurality of heat-transfer pipes 2, under this state, the outside wall surface of a plurality of heat-transfer pipes 2 is heated by coming from the thermal medium of thermal medium supplying tubing 11, make described material liquid evaporation.
Below, the state of the internal flow of the incorporating section 7 in vaporising device 1 for material liquid and gas, is used Fig. 1 and enumerates an example to describe.
As shown in Figure 1, the material liquid that comes from material liquid supplying tubing 9 passes through from the separatory hole 61 of dispersion plate 6, to the liquid-through hole 51 that is formed at the first dispersion plate 5, flows into.The material liquid flowing into described liquid-through hole 51 flow into the region that heat-transfer pipe 2 is not set of upper tube sheet 3.Flow into the material liquid overflow in described region, flow into the inside of a plurality of heat-transfer pipes 2.Thus, become the state (so-called wetting wall state) that has formed the film of material liquid at the internal face of a plurality of heat-transfer pipes 2.
On the other hand, come from the thermal medium of thermal medium supplying tubing 11 to the outside wall surface inflow of a plurality of heat-transfer pipes 2.
Thus, a plurality of heat-transfer pipes are heated.
The gas that comes from gas supplying tubing 10 passes through from the gap 62 between the peripheral part of dispersion plate 6 and the internal face of incorporating section 7, to a plurality of passages 52 that are formed at the first dispersion plate 5, flows into.The gas flowing into described passage 52 has formed the film of material liquid state with the internal face at a plurality of heat-transfer pipes 2 flows into the inside of heat-transfer pipe.
The liquid measure that flows down in the lower end of a plurality of heat-transfer pipes 2 is more than minimum allowable load.At this, so-called minimum allowable load refers to above: the material liquid that do not evaporate that whole internal faces through a plurality of heat-transfer pipes 2 of being everlasting are formed more than the amount of degree of film of material liquids flows down from the lower end of a plurality of heat-transfer pipes 2.That is, by by the lower end at described a plurality of heat-transfer pipes 2 flow down liquid measure management for more than minimum allowable load, even when the material liquid evaporation of internal face that makes to flow through described a plurality of heat-transfer pipe 2, also maintain the state that described internal face has formed the film of material liquid.
For example, while supplying with cyclohexanone oxime as material liquid, in order to maintain the internal face of heat-transfer pipe 2, form the state of liquid film, at the material liquid of the internal face lower end of heat-transfer pipe 2, flow down the per unit length that liquid measure is internal face lower end (m) for more than 170kg/ hour, be preferably 170～1700kg/ hour, more preferably 340～680kg/ hour.
In addition, while supplying with cyclohexanone oxime as material liquid, the pressure while preferably evaporating mixed liquor is the pressure below 1060torr.If pressure is greater than 1060torr, likely cause the deteriorated of cyclohexanone oxime.Preferred evaporation mixed liquor in pressure is the scope of 760torr (atmospheric pressure)～1000torr.
In addition, while supplying with cyclohexanone oxime as material liquid, the temperature while preferably evaporating mixed liquor is 130 ℃ of above and 170 ℃ of following scopes.The boil-off gas that obtains by vaporising device 1 is through heat-transfer pipe 2 and from 8 taking out at the bottom of tower.
According to the vaporising device 1 of present embodiment, from the bearing of trend of a plurality of heat-transfer pipes 2, observe, at the first dispersion plate 5, a plurality of liquid-through holes 51 are formed at the position with the region overlapping that heat-transfer pipe 2 is not set of upper tube sheet 3, and a plurality of passage 52 is formed at the position overlapping with a plurality of heat-transfer pipes 2.Thus, the material liquid that comes from material liquid supplying tubing 9 flows into the inside of described a plurality of heat-transfer pipe 2 by flowing into the region that heat-transfer pipe 2 is not set of upper tube sheet 3 from liquid-through hole 51.At the internal face of described a plurality of heat-transfer pipes 2, formed under the state of film of material liquid, the gas that comes from gas supplying tubing 10 from a plurality of passages 52 by flowing into the inside of a plurality of heat-transfer pipes 2.In addition, the material liquid that suppresses to come from material liquid supplying tubing 9 flows directly into a plurality of heat-transfer pipes 2.In addition, restriction comes from the flow direction of the gas of gas supplying tubing 10, so gas flows swimmingly in the inside of a plurality of heat-transfer pipes 2.Therefore can make to be formed at the even thickness of film of material liquid of the internal face of a plurality of heat-transfer pipes 2.
According to the configuration of the supply unit of gas and material liquid, the thickness of film of material liquid that is formed at the internal face of a plurality of heat-transfer pipes changes.If the thickness attenuation of the film of material liquid, by the evaporation of described material liquid, the internal face of heat-transfer pipe exposes sometimes.If exposing likely at the residue of the described residual material liquid of internal face exposing, internal face causes the obstruction of heat-transfer pipe.
With respect to this, adopt in the present embodiment following formation, therefore suppress to be formed at the variation of thickness of film of material liquid of the internal face of a plurality of heat-transfer pipes 2, described being configured to from the bearing of trend of a plurality of heat-transfer pipes 2 observed, a plurality of liquid-through holes 51 are disposed at the position with the region overlapping that heat-transfer pipe 2 is not set of upper tube sheet 3, and a plurality of passage 52 is disposed at the position overlapping with a plurality of heat-transfer pipes 2.In addition the material liquid that do not evaporate that, whole internal faces through a plurality of heat-transfer pipes 2 of being everlasting is formed more than the amount of degree of film of material liquids flows down from the lower end of a plurality of heat-transfer pipes 2.Thus, even if will flow through the material liquid evaporation of the internal face of described heat-transfer pipe 2, internal face can not expose and the residue of residual material liquid yet.Can suppress the obstruction of heat-transfer pipe thus and the evaporation of material liquid is carried out smoothly.
In addition, in the formation of the face of upper tube sheet 3 sides of the first dispersion plate 5 part of liquid-through hole 51 be provided with nozzle 51a.Therefore compare with the situation that nozzle 51a is not set, the material liquid passing through from liquid-through hole 51 easily flows into the region that heat-transfer pipe 2 is not set of upper tube sheet 3.Thus, the material liquid that inhibition is passed through from liquid-through hole 51 is along moving drippage of surface current of upper tube sheet 3 sides of the first dispersion plate 5.Therefore, suppress material liquid and flow directly into a plurality of heat-transfer pipes 2.The internal face that thus, can maintain a plurality of heat-transfer pipes 2 forms the state of the film of uniform material liquid.
In addition, in the formation of the face of the first dispersion plate 5 sides of dispersion plate 6 part in separatory hole 61 be provided with nozzle 61a.Therefore, compare with the situation that nozzle 61a is not set, the material liquid passing through from separatory hole 61 easily flows into the liquid-through hole 51 that is formed at the first dispersion plate 5.Thus, the material liquid that inhibition is passed through from separatory hole 61 moves and drips along the surface current of the first dispersion plate 5 sides of dispersion plate 6.Therefore, suppress material liquid and flow directly into a plurality of heat-transfer pipes 2.The internal face that thus, can maintain a plurality of heat-transfer pipes 2 forms the state of the film of uniform material liquid.
In addition, the gas that comes from gas supplying tubing 10 with from gap 62 by and from a plurality of passages 52, by flowing into the mode of the inside of a plurality of heat-transfer pipes, form.Thus, restriction comes from the flow direction of the gas of gas supplying tubing 10, so gas flows swimmingly in the inside of a plurality of heat-transfer pipes 2.Therefore, at gas flow, cross in the process of inside of a plurality of heat-transfer pipes 2, the internal face that can maintain a plurality of heat-transfer pipes 2 forms the state of the film of uniform material liquid.Can suppress the obstruction of heat-transfer pipe thus and the evaporation of material liquid is carried out smoothly.
In addition, from the bearing of trend of described heat-transfer pipe 2, observe, the area of heat-transfer pipe 2 is the area more than area of passage 52.Therefore the gas, passing through from passage 52 easily flows into the inside of heat-transfer pipe 2.On the contrary, from the bearing of trend of described heat-transfer pipe 2, observe, if the area of heat-transfer pipe 2 is the area that is less than the area of passage 52, flowing of material liquid upper tube sheet 3 upset in the outside that the gas passing through from passage 52 flows into heat-transfer pipe 2.If upset flowing of material liquid in upper tube sheet 3, the thickness of film of material liquid that is formed at the internal face of heat-transfer pipe 2 changes.
With respect to this, in the present embodiment, from the bearing of trend of described heat-transfer pipe 2, to observe, the area of heat-transfer pipe 2 is the area more than area of passage 52, the gas that therefore suppresses to pass through from passage 52 flows into the outside of heat-transfer pipe 2.Thus, suppress the mobile upset of the material liquid in upper tube sheet 3.The thickness of film of material liquid that can suppress to be thus formed at the internal face of heat-transfer pipe 2 changes.
In addition, from the bearing of trend of described heat-transfer pipe 2, observe, the center of heat-transfer pipe 2 is consistent with passage 52 center.Thus, the gas passing through from passage 52 easily flows into the inside of heat-transfer pipe 2.That is the gas that, inhibition is passed through from passage 52 flows into the outside of heat-transfer pipe 2.Thus, suppress the mobile upset of the material liquid in upper tube sheet 3.The thickness of film of material liquid that can suppress to be thus formed at the internal face of heat-transfer pipe 2 changes.
In the vaporising device of present embodiment, use cyclohexanone oxime as material liquid, but be not limited thereto.In addition, can use at when evaporation residual various material liquids of residue of material liquid sometimes.
In addition, in the vaporising device of present embodiment, on the first dispersion plate 5, be only provided with 1 dispersion plate 6, but be not limited thereto.For example, also more than 1 or 2 dispersion plate 6 can be set on the first dispersion plate 5.In addition, nozzle 61a can be set on dispersion plate 6 and also nozzle 61a can be set.
(the 2nd embodiment)
Fig. 3 means the longitudinal section corresponding to the vaporising device 1A of the 2nd embodiment of the present invention of Fig. 1.As shown in Figure 3, the vaporising device 1A of present embodiment is different from the vaporising device 1 of above-mentioned the 1st embodiment in the following areas, replaces dispersion plate 6 and the second dispersion plate 12 is set, has the transfer mechanism 13 that the material liquid that makes to flow out from a plurality of heat-transfer pipes 2 is transferred to the top of the second dispersion plate 12.Other side is identical with above-mentioned formation, therefore the key element identical with Fig. 1 is put on to identical symbol, and omits detailed explanation.
As shown in Figure 3, in vaporising device 1A, between material liquid supplying tubing 9 and gas supplying tubing 10 and the first dispersion plate 5, be provided with the second dispersion plate 12.At the second dispersion plate 12, be provided with and make the material liquid that comes from material liquid supplying tubing 9 to a plurality of liquid-through holes 121 that are formed at liquid-through hole 51 inflows of the first dispersion plate 5, and a plurality of breather pipes 122 that the gas that comes from gas supplying tubing 10 is passed through.From the bearing of trend of a plurality of heat-transfer pipes 2, observe, a plurality of liquid-through holes 121 are disposed at and the nonoverlapping position of a plurality of passages 52.
Fig. 4 A and Fig. 4 B mean the schematic diagram of configuration status of a plurality of breather pipes 122 of the second dispersion plate 12 of vaporising device 1A.Fig. 4 A is the top view of the second dispersion plate 12, in order conveniently to dot incorporating section 7, represents the notch part 122a of breather pipe 122 with double dot dash line.Fig. 4 B is the stereogram of the second dispersion plate 12.
As shown in Figure 4 A, at the second dispersion plate 12, a plurality of liquid-through holes 121 that material liquid is passed through and a plurality of breather pipes 122 that gas is passed through have been formed.The shape of liquid-through hole 121 is overlooked as circle.The shape of breather pipe 122 is overlooked as circle.In overlooking, 6 breather pipes 122 are configured to circular concentric at the second dispersion plate 12.The configurable number of the breather pipe 122 illustrating is in the present embodiment an example, but is not limited thereto, and can adopt various configurable number.
Between the peripheral part of the second dispersion plate 12 and the internal face of incorporating section 7, there is gap 123.The area in gap 123 be preferably incorporating section 7 sectional area 5%～40%, more preferably 10～30%.
The aperture area of a plurality of breather pipes 122 of the second dispersion plate 12 is all added and area be the area of 30%～70% scope of the area in gap 123.Preferably the aperture area of a plurality of breather pipes 122 of the second dispersion plate 12 is all added and area be 40～60% area of the area in gap 123.
The central part side that a plurality of breather pipes 122 are the second dispersion plate 12 in gas supplying tubing 10 sides has notch part 122a.From the bearing of trend of heat-transfer pipe 2, observe (overlooking), notch part 122a is configured as follows: in linking 2 intersection point P1, P2 of the center C P2 of breather pipe 122 and the straight line of the center C P1 of the second dispersion plate 12 and the circumference of breather pipe 122, the intersection point P1 of the center C P1 side of close the second dispersion plate 12 is the mid point of the arc AR of notch part 122a.
Wish that the central angle θ corresponding with the arc AR of notch part is for example 90 °～270 °, more preferably 150～210 ° of left and right.
As shown in Fig. 3 and Fig. 4 B, more protrude towards top than the upper end of the sidewall of the second dispersion plate 12 upper end of breather pipe 122.In the longitudinal section of Fig. 3, wish that the length H2 of the longitudinal direction of notch part 122a is 10%～80% left and right with respect to the total length H1 of breather pipe 122, more preferably 20～50% left and right.
According to like this, owing to there is the breather pipe 122 in gas supplying tubing 10 sides with notch part 122a, the gap 123 that can be suppressed at thus peripheral part produces strong gas flow, suppresses the harmful effect to liquid flow.
Turn back in Fig. 3, in the formation of the face of the first dispersion plate 5 sides of the second dispersion plate 12 part of liquid-through hole 121 be provided with from described and face the nozzle 121a that the first dispersion plate 5 sides are protruded.
Between the peripheral part of the second dispersion plate 12 and the internal face of incorporating section 7, there is gap 123.
Vaporising device 1A forms in such a way: the gas that comes from gas supplying tubing 10 from described gap 123 by and from a plurality of passages 52 by flowing into the inside of a plurality of heat-transfer pipes 2.
Transfer mechanism 13 has the pipe arrangement 131 of handover and pump 132.In vaporising device 1A, at the bottom of tower, 8 bottom is connected with one end of transferring pipe arrangement 131.In material liquid supplying tubing 9, be connected with the other end of transferring pipe arrangement 131.
In order to maintain the internal face of heat-transfer pipe 2, formed the state of liquid film, need to make the material liquid of the internal face lower end of heat-transfer pipe 2 flow down the liquid measure of liquid measure for regulation more than.Therefore, sometimes material liquid do not evaporate and from heat-transfer pipe 2 by and drop at the bottom of tower 8.Described material liquid (not evaporated liquor) is from 8 being supplied in pump 132 via transferring pipe arrangement 131 at the bottom of tower.A part for described not evaporated liquor utilize pump 132 from transfer pipe arrangement 131, material liquid supplying tubing 9 by and be again supplied in incorporating section 7.
According to like this, evaporated liquor circulation.The not evaporated liquor of described supply from the liquid-through hole 121 of the second dispersion plate 12 by and via the liquid-through hole 51 of the first dispersion plate 5, flow into the region that heat-transfer pipe 2 is not set of upper tube sheet 3, and flow into the inside of a plurality of heat-transfer pipes 2.
According to the vaporising device 1A of present embodiment, be provided with the second dispersion plate 12, from the bearing of trend of a plurality of heat-transfer pipes 2, to observe, a plurality of breather pipes 122 are configured to circular concentric.Therefore, compare with the situation of a plurality of breather pipe 122 random arrangement, suppress to come from the part in the incorporating section 7 relatively of flowing of gas of gas supplying tubing 10, and Zone Full in incorporating section 7 becomes even.
Therefore, the gas that comes from gas supplying tubing 10 passes through from gap 123 and the breather pipe 122 of the peripheral part of the second dispersion plate 12, is supplied to equably the first dispersion plate 5, and the flow direction of gas is limited, and gas successfully flows through the inside of a plurality of heat-transfer pipes 2.The internal face that thus, can maintain a plurality of heat-transfer pipes 2 has formed the state of the film of uniform material liquid.
In addition, owing to thering is transfer mechanism 13, therefore can be by a part for evaporated liquor not again for evaporation.
In the above-described embodiment, also can form ditch at the front end of the protuberance of heat-transfer pipe.
Fig. 5 A～Fig. 5 C means the schematic diagram of variation of the protuberance of heat-transfer pipe.
For example, as shown in Figure 5A, also can form at the front end of the protuberance 2Aa of heat-transfer pipe 2A the ditch 2Ab of V word shape.
In addition, as shown in Figure 5 B, also can form at the front end of the protuberance 2Ba of heat-transfer pipe 2B the ditch 2Bb of U-shaped.
In addition, as shown in Figure 5 C, also can form at the front end of the protuberance 2Ca of heat-transfer pipe 2C the ditch 2Cb of concavity.
If do not form the formation of ditch at the front end of the protuberance of heat-transfer pipe, in order to distribute equably material liquid to a plurality of heat-transfer pipes, must make the height of front end of protuberance of each heat-transfer pipe identical.With respect to this, if form the formation of ditch at the front end of the protuberance of heat-transfer pipe, while distributing material liquid equably to a plurality of heat-transfer pipes, the making precision of heat-transfer pipe and the degree that requires that precision is set diminish.
(vapo(u)rization system)
Fig. 6 means the schematic diagram of an example of vapo(u)rization system.
As shown in Figure 6, vapo(u)rization system 100 comprises vaporising device 1, pump 101, decompression distillation device 102 and condenser 103 and forms.
Vapo(u)rization system 100 is following systems: from not evaporated liquor and the mixture that comes from the tar ingredients of raw material of unevaporated raw material vaporising device 1, reclaim raw material and recycling in vaporising device 1.
Material liquid L1 is sent to incorporating section via material liquid supplying tubing.In this supply process, from solvent supplying tubing donor solvent L2, material liquid L1 and solvent L2 are mixed.
The mist of gas G1 and solvent gas G2 is sent to incorporating section via gas supplying tubing.
At the internal face of a plurality of heat-transfer pipes, formed under the state of film of material liquid, by the described a plurality of heat-transfer pipes of thermal medium H heating, made described material liquid evaporation.Obtain thus boil-off gas (cyclohexanone oxime gas) G3.Meanwhile, the mixture that obtains material liquid and higher boiling composition is as residue C.As the thermal source of thermal medium H, there is no particular limitation, can use arbitrarily known thermal source.
A part of residue C (the not evaporated liquor of material liquid) C1 utilize pump 101 from transfer pipe arrangement, material liquid supplying tubing by and be again supplied in incorporating section and circulate.
The remainder of residue C (can be also a remaining part of residue C) C2 is supplied in decompression distillation device 102 and is distilled.For example, in the situation that material liquid is cyclohexanone oxime, preferred described distillation is under the decompression of 1.4kPa～10kPa (absolute pressure), and vapo(u)rizing temperature is 90～135 ℃.Thus, the low boiling point component A that comprises raw material is removed in distillation, and discharges the higher boiling composition T as bottoms.
The low boiling point component A that comprises the raw material removed of distillation is imported into and in condenser 103, carries out condensation.Thus, reclaim the low boiling point component A1 that comprises condensed raw material, and discharge uncooled low boiling point component A2.The low boiling point component A1 that comprises the raw material after recovery from transfer pipe arrangement, material liquid supplying tubing by and be again supplied in incorporating section and be recycled.
According to a mode of the present invention, can provide and suppress the obstruction of heat-transfer pipe and the tarring of raw material, successfully carry out the evaporation of material liquid, the recovery of not evaporating raw material, and can carry out efficiently vaporising device 1 and the vapo(u)rization system 100 of raw-material evaporation.
Above, limit is illustrated the preferred embodiment of the present invention example with reference to accompanying drawing limit, but the present invention does not limit this example.Each shape of each member of formation shown in above-mentioned example, combination etc. are an example, can carry out various changes based on designing requirement etc. without departing from the spirit and scope of the invention.
Embodiment
Below represent embodiments of the invention, but the present invention is not defined in this.
Embodiment 1
Vaporising device for possessing the heat-transfer pipe of internal diameter 50mm, length 6m, evaporates material liquid by endless form.As described material liquid, use the mixed liquor of the solvent of cyclohexanone oxime and the described cyclohexanone oxime of dilution.As described solvent, use methyl alcohol.As gas, use nitrogen.As dispersion plate, use the first dispersion plate, the hop count of dispersion plate is made as to 1 section (with reference to Fig. 1).Main operation condition is as follows.
The internal circulating load of evaporated liquor not: 140 (140～150) kg/ hour root
The methanol solution quantity delivered of each root heat-transfer pipe: 0.85 (0.825～0.875) kg/ hour root
The methanol gas quantity delivered of each root heat-transfer pipe: 50 (50～52.5) kg/ hour root
The nitrogen gas supply amount of each root heat-transfer pipe: 5% of methanol gas quantity delivered
Evaporating temperature: 140～160 ℃
Running pressure: below 950torr
Consequently until the cyclohexanone oxime evaporation capacity=95T of each root heat-transfer pipe, the obstruction to heat-transfer pipe unconfirmed.
Embodiment 2
Vaporising device for possessing the heat-transfer pipe of internal diameter 50mm, length 6m, evaporates material liquid by endless form.As described material liquid, use the mixed liquor of the solvent of cyclohexanone oxime and the described cyclohexanone oxime of dilution.As described solvent, use methyl alcohol.As gas, use nitrogen.As dispersion plate, use the first dispersion plate and the second dispersion plate, the hop count of dispersion plate is made as to 2 sections.In addition, in the formation of the first dispersion plate the part in separatory hole nozzle (with reference to Fig. 3) is set.Main operation condition is as follows.
The internal circulating load of evaporated liquor not: 140 (140～150) kg/ hour root
The methanol solution quantity delivered of each root heat-transfer pipe: 0.85 (0.825～0.875) kg/ hour root
The methanol gas quantity delivered of each root heat-transfer pipe: 55 (49～58) kg/ hour root
The nitrogen gas supply amount of each root heat-transfer pipe: 5% of methanol gas quantity delivered
Evaporating temperature: 140～160 ℃
Running pressure: below 950torr
Consequently until the cyclohexanone oxime evaporation capacity=100T of each root heat-transfer pipe, the obstruction to heat-transfer pipe unconfirmed.
Utilizability in industry
According to the present invention, when can being provided, liquid film type heat exchanger under utilizing vertical current evaporation material liquid and gas forms the good liquid film that flows down, vaporising device, vapo(u)rization system and the method for evaporating that can suppress thus the obstruction of heat-transfer pipe and the evaporation of material liquid is carried out smoothly, therefore industrially exceedingly useful.
Description of reference numerals
1, 1A, 1B ... vaporising device, 2, 2A, 2B, 2C ... heat-transfer pipe, 2a, 2Aa, 2Ba, 2Ca protuberance, 2Ab, 2Bb, 2Cb ... ditch, 3 ... upper tube sheet (tube sheet), 5, 5A, 5B ... the first dispersion plate, 6 ... dispersion plate, 7 ... incorporating section, 9 ... material liquid supplying tubing (inflow portion), 10 ... gas supplying tubing (inflow portion), 12 ... the second dispersion plate, 13 ... transfer mechanism, 51 ... liquid-through hole, 51a ... nozzle, 52 ... passage, 62 ... gap, 100 ... vapo(u)rization system, 101 ... pump, 102 ... decompression distillation device, 103 ... condenser, 121 ... liquid-through hole, 122 ... breather pipe, 122a notch part
Claims (13)
1. a vaporising device, is characterized in that, comprises:
A plurality of heat-transfer pipes,
The tube sheet that the mode supporting so that described a plurality of heat-transfer pipes are vacated to interval mutually forms and
Be arranged at the first dispersion plate of the top of described tube sheet,
Described the first dispersion plate is provided with 2 above liquid-through holes that mode so that material liquid is passed through forms and 2 above passages that form in the mode that gas is passed through, from the bearing of trend of described a plurality of heat-transfer pipes, observe, described a plurality of liquid-through hole is formed at the position with the region overlapping that described heat-transfer pipe is not set of described tube sheet, and described a plurality of passage is formed at and the position that is provided with the region overlapping of described a plurality of heat-transfer pipes
Described a plurality of heat-transfer pipe has the protuberance that the mode to protrude above described tube sheet forms.
2. vaporising device according to claim 1, is characterized in that,
For described the first dispersion plate, at the face of the tube sheet side of described the first dispersion plate, be provided with nozzle,
Described nozzle protrudes towards described tube sheet side direction from the tube sheet side of described the first dispersion plate,
Described nozzle be arranged at described the first dispersion plate tube sheet side face formation the part of described liquid-through hole.
3. vaporising device according to claim 1 and 2, is characterized in that,
Also have with towards described the first dispersion plate and make described material liquid and inflow portion that mode that described gas flows into forms.
4. vaporising device according to claim 3, is characterized in that,
Between described the first dispersion plate and described inflow portion, be provided with more than 1 dispersion plate,
At described more than 1 dispersion plate, be provided with a plurality of liquid-through holes that the mode so that the described material liquid that comes from described inflow portion is passed through forms,
From the bearing of trend of described a plurality of heat-transfer pipes, observe, in described 1 above dispersion plate be at least disposed at described the first dispersion plate directly over a plurality of liquid-through holes of dispersion plate be configured in the position with the region overlapping that a plurality of passages are not set of described the first dispersion plate.
5. according to the vaporising device described in claim 3 or 4, it is characterized in that,
Also there is to take in the incorporating section that the mode of described tube sheet and described the first dispersion plate forms,
Between described inflow portion and described the first dispersion plate, be provided with the second dispersion plate,
At described the second dispersion plate, be provided with so that a plurality of breather pipes that come from a plurality of liquid-through holes that mode that the material liquid of described inflow portion flows into towards the described liquid-through hole that is formed at described the first dispersion plate forms and form in the mode that the gas that comes from described inflow portion is passed through
Between the peripheral part of described the second dispersion plate and the internal face of described incorporating section, formed gap,
From the bearing of trend of described a plurality of heat-transfer pipes, observe, a plurality of breather pipes of described the second dispersion plate are configured to circular concentric,
The central part side that a plurality of breather pipes of described the second dispersion plate are described the second dispersion plate in described inflow portion side has notch part.
6. according to the vaporising device described in any one in claim 3～5, it is characterized in that,
Also have so that the transfer mechanism that the mode that the material liquid flowing out from described a plurality of heat-transfer pipes is transferred to described inflow portion forms.
7. according to the vaporising device described in any one in claim 1～6, it is characterized in that,
Front end at described protuberance has formed ditch.
8. according to the vaporising device described in any one in claim 1～7, it is characterized in that,
From the bearing of trend of described heat-transfer pipe, observe, the area of the heat-transfer pipe in described 2 above heat-transfer pipes is the area being arranged at more than the area of passage of described the first dispersion plate directly over it.
9. according to the vaporising device described in any one in claim 1～8, it is characterized in that,
From the bearing of trend of described heat-transfer pipe, observe, the center of described heat-transfer pipe is consistent with the center of passage of described the first dispersion plate directly over being arranged at it.
10. according to the vaporising device described in any one in claim 1～9, it is characterized in that,
Described material liquid comprises cyclohexanone oxime.
11. 1 kinds of vapo(u)rization systems, is characterized in that, it has:
Vaporising device described in any one in claim 1～10,
So that the pump that the mode that a part for the residue of the unstrpped gas generating by described vaporising device circulates in described vaporising device forms,
With distill decompression distillation device that the mode of the remainder of described residue forms and
The condenser that the mode of the raw material of removing by described decompression distillation device distillation with condensation forms.
12. 1 kinds of method of evaporating, is characterized in that,
Right to use requires the vaporising device described in any one in 1～10 to make described material liquid heating evaporation, by obtaining, under the pressure of the pressure of residue residual after unstrpped gas when lower than described heating evaporation, distill, and by by distilling the unstrpped gas condensation of removing, reclaim thus the material liquid comprising in described residue.
13. method of evaporating according to claim 12, is characterized in that,
Described material liquid is cyclohexanone oxime and by the mixed liquor of the solvent of its dilution, described solvent is alcohol, with the whole evaporating surface in described vaporising device, become the mode of the state at least being soaked by cyclohexanone oxime, making the cyclohexanone oxime of the evaporating surface lower end under the pressure of described mixed liquor below 1060torr and in described vaporising device flow down liquid measure is that the per unit length 1m of evaporating surface lower end evaporates under more than 170kg/ hour condition, and described distillation is carried out under the decompression of 1.4kPa～10kPa.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-004130 | 2012-01-12 | ||
| JP2012004130A JP2013141658A (en) | 2012-01-12 | 2012-01-12 | Evaporator, evaporating system and evaporating method |
| PCT/JP2012/080013 WO2013105342A1 (en) | 2012-01-12 | 2012-11-20 | Evaporator, evaporation system, and evaporation method |
Publications (2)
| Publication Number | Publication Date |
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| CN104039408A true CN104039408A (en) | 2014-09-10 |
| CN104039408B CN104039408B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280066442.5A Active CN104039408B (en) | 2012-01-12 | 2012-11-20 | Vaporising device, vapo(u)rization system and method for evaporating |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013141658A (en) |
| CN (1) | CN104039408B (en) |
| WO (1) | WO2013105342A1 (en) |
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| WO2018149776A1 (en) * | 2017-02-14 | 2018-08-23 | Covestro Deutschland Ag | Distributor device, in particular for falling film evaporators, and use thereof |
| CN114211120B (en) * | 2021-12-31 | 2024-01-12 | 中核武汉核电运行技术股份有限公司 | Tube-tube plate joint of steam generator for pressurized water reactor nuclear power station |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3132064A (en) * | 1959-11-05 | 1964-05-05 | Scheffers Johannes P Hendrikus | Apparatus for the evaporation of liquids |
| US5004043A (en) * | 1987-03-24 | 1991-04-02 | Tch Thermo-Consulting-Heidelberg Gmbh | Internal tubular falling film apparatus for the evaporation of liquids and for the absortion or degassing of solutions of two or more substances |
| JPH0641601B2 (en) * | 1988-11-24 | 1994-06-01 | 三洋化成工業株式会社 | Molding composition |
| JPH07103673A (en) * | 1993-10-05 | 1995-04-18 | Toyo Eng Corp | Liquid dispersion device arranged in heat transfer pipe |
| CN1285568C (en) * | 2001-03-28 | 2006-11-22 | 住友化学工业株式会社 | Method of evaporating cyclohexanone oxime |
| CN101954195A (en) * | 2010-04-29 | 2011-01-26 | 广州市心德实业有限公司 | Falling film evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602640A1 (en) * | 1996-01-25 | 1997-07-31 | Basf Ag | Process and evaporator for evaporating compounds sensitive to oxidation |
-
2012
- 2012-01-12 JP JP2012004130A patent/JP2013141658A/en active Pending
- 2012-11-20 WO PCT/JP2012/080013 patent/WO2013105342A1/en active Application Filing
- 2012-11-20 CN CN201280066442.5A patent/CN104039408B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3132064A (en) * | 1959-11-05 | 1964-05-05 | Scheffers Johannes P Hendrikus | Apparatus for the evaporation of liquids |
| US5004043A (en) * | 1987-03-24 | 1991-04-02 | Tch Thermo-Consulting-Heidelberg Gmbh | Internal tubular falling film apparatus for the evaporation of liquids and for the absortion or degassing of solutions of two or more substances |
| JPH0641601B2 (en) * | 1988-11-24 | 1994-06-01 | 三洋化成工業株式会社 | Molding composition |
| JPH07103673A (en) * | 1993-10-05 | 1995-04-18 | Toyo Eng Corp | Liquid dispersion device arranged in heat transfer pipe |
| CN1285568C (en) * | 2001-03-28 | 2006-11-22 | 住友化学工业株式会社 | Method of evaporating cyclohexanone oxime |
| CN101954195A (en) * | 2010-04-29 | 2011-01-26 | 广州市心德实业有限公司 | Falling film evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013141658A (en) | 2013-07-22 |
| CN104039408B (en) | 2015-11-25 |
| WO2013105342A1 (en) | 2013-07-18 |
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