CN103611327A - Temperature-control separation tower and separation method - Google Patents
Temperature-control separation tower and separation method Download PDFInfo
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- CN103611327A CN103611327A CN201310685705.7A CN201310685705A CN103611327A CN 103611327 A CN103611327 A CN 103611327A CN 201310685705 A CN201310685705 A CN 201310685705A CN 103611327 A CN103611327 A CN 103611327A
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Abstract
The invention relates to a temperature-control separation tower and a method. The temperature-control separation tower comprises a separation tower body, wherein a condenser is arranged above the separation tower body and an evaporator is arranged below the separation tower body; a collector is arranged below the condenser; a circulating pipe is arranged outside the separation tower body; and a cooling medium or a heating medium is arranged in the circulating pipe, so as to realize heat exchange on a component to be separated in the separation tower body and the cooling or heating medium in the circulating pipe. The temperature-control separation tower has the beneficial effects that temperature control on the separation tower body is realized through the circulating pipe which is arranged outside the separation tower body and contains the medium, a tower plate and a packing of a rectifying tower are saved, dual-component and multi-component separation is realized through direct temperature control, thus reducing construction cost, facilitating operation, starting and stopping conveniently, and greatly simplifying existing separation equipment.
Description
Technical field
The present invention relates to Chemical Engineering separation equipment and separation method, relate in particular to a kind of controlling temp type knockout tower and method of alternative traditional rectifying column.
Background technology
Rectifying column is the widely used equipment such as chemical industry, oil refining, and the organic mixture that is generally used for rectifying fractionation is separated, and the principle of rectifying is in limited space, increases as much as possible the heat exchange area of liquid phase mixture.Specifically, steam enters at the bottom of by tower, the gas phase evaporating and decline liquid carries out counter current contacting, and two contact, and the volatile components in decline liquid constantly shifts in gas phase, difficult volatile component in gas phase constantly shifts in decline liquid, gas phase more approaches tower top, and its volatile components concentration is higher, and at the bottom of decline liquid more approaches tower, its difficult volatile component is more enrichment, thereby reaches the object of component separation.The gas phase being risen by tower top enters condenser, and a part for the liquid of condensation is returned to tower top as phegma and entered in rectifying column, and remaining part is taken out as distillate.The liquid that tower bottom flow goes out, a part is wherein sent into reboiler, and heating evaporation becomes gas phase to return in tower, and another part liquid takes out as still raffinate.The tower body of rectifying column becomes rectifying column, if adopt packed tower, is piling irregular filler in post, and the height that makes gas-liquid two-phase reach good mass-transfer packing layer is effective separation length of rectifying column,
Rectifying column is divided into packed tower and plate column by structure difference.Plate column is in cylindrical housings, to be horizontally disposed with at a certain distance some layers of column plate, and liquid is flowed through from top to bottom and at the bottom of tower, got rid of after each laminate by Action of Gravity Field, maintains certain thickness mobile liquid layer on each layer of column plate; Gas, under the promotion of pressure difference, is discharged from upwards rising to tower top through the liquid layer on each column plate successively at the bottom of tower.Matter, heat exchange are carried out in the step by step tray contact in tower of gas, liquid, therefore the composition of two-phase is phase step type along tower height, change.Packed tower is the filler of loading certain altitude in cylindrical housings, and liquid is uniformly distributed on packing layer top through tower top spray equipment, relies on Action of Gravity Field at the bottom of tower, to discharge after filling surface is flowed through packing layer from top to bottom; Gas under the promotion of pressure difference, through the space of packing layer, flows to the other end by one end of tower, and gas-liquid is carried out matter, heat exchange in filling surface contact, and the composition of two-phase changes continuously along tower height.
Yet, no matter be packed tower or plate column, all there is such or such problem.Such as, there is complex structure, the problem such as cost is high, and production capacity is low, installation and repairing difficulty.Although many scientific research personnel successively improve the member of rectifying column, column plate, filler for a long time, also could not reach and address the above problem completely.
Temperature control knockout tower has been cancelled column plate, the filler of rectifying column, directly by temperature control, realize two components, multi-component separation, thereby it is low to reach cost, and easy and simple to handle, start-stop car is convenient, has greatly simplified existing separation equipment.
Summary of the invention
The present invention is directed to the separating power that how to improve knockout tower, avoid using baroque rectifying column, realize the accurate separation of multicomponent mixture, a kind of controlling temp type knockout tower is provided.
To achieve these goals, technical scheme of the present invention is as follows: controlling temp type knockout tower, comprise knockout tower tower body, the top of described knockout tower tower body is provided with condenser, bottom is provided with evaporimeter, and described condenser is provided with collector, and described knockout tower tower body is provided with circulation pipe outward, in described circulation pipe, be provided with circulation fluid, make component to be separated and circulation fluid in knockout tower tower body realize heat exchange.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the two ends of described circulation pipe are connected with heat exchanger respectively.
Further, the refrigerant in described circulation pipe or heating agent are flowed to upper end by the lower end of circulation pipe.
Further, the number of plies of described circulation pipe is one deck at least.
Further, described circulation pipe is individual layer circulation pipe or double-deck circulation pipe.
Further, described knockout tower tower body is comprised of at least one pipe.
Further, described knockout tower tower body is tubulation form, and is provided with deflection plate between described tubulation.
Further, in described pipe, be provided with the assembly of at least one deflection plate or at least one deflector or at least one disk and annulus.
Further, the assembly of described deflection plate or deflector or disk and annulus is located at top or middle part or bottom or the whole pipe of pipe.
The present invention also provides a kind of controlling temp type separation method, material to be separated is put into evaporimeter to be heated, the circulation fluid of the rising steam producing in evaporimeter in knockout tower tower body wall and circulation pipe carries out exchange heat, circulation fluid absorbs after heat is partly vaporized and enters heat exchanger, enters knockout tower tower body bottom reuse through heat exchanger; Heavy constituent in the knockout tower tower body evaporimeter that liquefies back, minute to the cool condenser of tower top liquefaction, enters collector after light component rising concentrate.
beneficial effect
The invention has the beneficial effects as follows: outside knockout tower tower body, arrange and contain vectorial circulation pipe, realization is controlled the temperature of knockout tower tower body, temperature control knockout tower has been cancelled column plate, the filler of rectifying column, directly by temperature control, realize two components, multi-component separation, thereby it is low to reach cost, easy and simple to handle, start-stop car is convenient, has greatly simplified existing separation equipment.
accompanying drawing explanation
Fig. 1 is the structural representation of temperature control knockout tower of the present invention;
Fig. 2 is the structural representation of single hose knockout tower tower body of the present invention;
Fig. 3 is the structural representation of multitube knockout tower tower body of the present invention;
Fig. 4 is the structural representation of shell and tube knockout tower tower body of the present invention;
Fig. 5 is the structural representation of pipe in temperature control knockout tower of the present invention;
Fig. 6 is the structural representation of pipe in temperature control knockout tower of the present invention;
Fig. 7 is the structural representation of pipe in temperature control knockout tower of the present invention.
The specific embodiment
For making that architectural feature of the present invention and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
Embodiment 1
As shown in Figure 1, described controlling temp type knockout tower, comprises knockout tower tower body 1, and the top of described knockout tower tower body 1 is provided with condenser 2, and bottom is provided with evaporimeter 3, and described condenser 2 bottoms are provided with collector 4.
The outer circulation pipe 5 that is provided with of described knockout tower tower body 1, circulation pipe 5 is individual layer circulation pipe or double-deck circulation pipe or multilayer circulation pipe, in described circulation pipe 5, be provided with circulation fluid, circulation fluid is refrigerant or heating agent, make the component to be separated in knockout tower tower body 1 to carry out heat exchange with circulation fluid, the two ends of described circulation pipe 5 are connected with heat exchanger 6 respectively
According to the difference of separator tube 7 structures in knockout tower tower body 1, described knockout tower tower body 1 comprises single hose knockout tower tower body (Fig. 2), multitube knockout tower tower body (Fig. 3), shell and tube knockout tower tower body (Fig. 4), between the separator tube of described shell and tube knockout tower tower body, is provided with deflection plate.
In described separator tube 7, be provided with at least one deflection plate 71 or at least one disk and annulus assembly 72 or at least one spiral plate 73, and be located at top or middle part or bottom or the whole pipe of separator tube 7, as shown in Fig. 5-7.
Embodiment 2
Material ethanol to be separated: water=1: 2 are placed on heating in evaporimeter 1, the rising steam that material to be separated produces divides to knockout tower tower body 1, light component ethanol upwards liquefies and collects light component into collector 4 through condenser 2, the rising steam of material to be separated divides to knockout tower, heavy constituent water is constantly liquefied and flows into evaporimeter 1, circulation fluid ethanol in circulation pipe 5: water: methyl alcohol=1: 0.02～0.08: 0.005～0.02 obtains heat from separator tube 7, by part vaporization, risen to circulation pipe top, carry out heat exchange with the rising component on separator tube top, keep separator tube top constant temperature, continue to rise and enter into heat exchanger 6, after liquefaction, get back to circulation pipe bottom.Thereby separation obtains ethanol: water=1: 0.0526 component.Wherein evaporator temperature is 99-100 ℃, and knockout tower upper temp is 78.3 ℃, and separation process is continued operation.
Embodiment 3
Material ethanol to be separated: water=1: 4 are placed on heating in evaporimeter 1, the rising steam that material to be separated produces divides to knockout tower tower body 1, light component ethanol upwards liquefies and collects light component into collector 4 through condenser 2, the rising steam of material to be separated divides to knockout tower, heavy constituent water is constantly liquefied and flows into evaporimeter 1, circulation fluid ethanol in circulation pipe 5: water: methyl alcohol=1: 0.02～0.08: 0.005～0.02 obtains heat from separator tube 7, by part vaporization, risen to circulation pipe top, enter into heat exchanger 6, after liquefaction, get back to circulation pipe bottom.Thereby separation obtains ethanol: water=1: 0.0526 component.Wherein evaporator temperature is 99-100 ℃, and knockout tower upper temp is 78.3 ℃, and separation process is gap operating.
Embodiment 4
Material ethanol to be separated: water=1: 9 are placed on heating in evaporimeter 1, the rising steam that material to be separated produces divides to knockout tower tower body 1, light component ethanol upwards liquefies and collects light component into collector 4 through condenser 2, the rising steam of material to be separated divides to knockout tower, heavy constituent water is constantly liquefied and flows into evaporimeter 1, circulation fluid ethanol in circulation pipe 5: water=1: 0.02～0.08 obtains heat from separator tube 7, by part vaporization, risen to circulation pipe top, enter into heat exchanger 6, after liquefaction, get back to circulation pipe bottom.Thereby separation obtains ethanol: water=1: 0.07526 component.Wherein evaporator temperature is 99-100 ℃, and knockout tower upper temp is 78.5 ℃, and separation process is continued operation.
Temperature control knockout tower of the present invention, can be continuously also can gap operating, with destilling tower ratio, easy and simple to handle, operating flexibility is large, antijamming capability is extremely strong, start-stop car is freely easy, safety.Invest lowly, rectifying column height significantly can be reduced.Obtain the component of different boiling, only need to regulate the composition of circulation fluid.With different circulation fluids, can obtain concentration of alcohol 95%, 93% etc., and tower reactor concentration of alcohol <1%.
The operation principle of air temperature type knockout tower of the present invention is, the rising steam that tower reactor produces is in knockout tower tower body wall and circulation fluid generation exchange heat, heavy constituent liquefaction in knockout tower, light component rises, heavy constituent is returned tower reactor, after light component concentrate, divide to the cool condenser liquefaction of tower top, to light component collector, the heat that circulation fluid in circulation pipe spreads out of at knockout tower makes it boiling, heat-transfer effect improves greatly like this, reached a constant temperature effect simultaneously, circulation fluid enters into circulation pipe from knockout tower bottom, after heating part vaporization, enter the heat exchanger of the circulatory system, after heat exchanger, circulation fluid enters knockout tower bottom and reuses.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what in above-described embodiment and description, describe is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (10)
1. controlling temp type knockout tower, comprise knockout tower tower body, the top of described knockout tower tower body is provided with condenser, bottom is provided with evaporimeter, described condenser is provided with collector, it is characterized in that, described knockout tower tower body is provided with circulation pipe outward, in described circulation pipe, be provided with circulation fluid, make component to be separated and circulation fluid in knockout tower tower body realize heat exchange.
2. controlling temp type knockout tower according to claim 1, is characterized in that, the two ends of described circulation pipe are connected with heat exchanger respectively.
3. controlling temp type knockout tower according to claim 1 and 2, is characterized in that, the refrigerant in described circulation pipe or heating agent are flowed to upper end by the lower end of circulation pipe.
4. controlling temp type knockout tower according to claim 1 and 2, is characterized in that, the number of plies of described circulation pipe is one deck at least.
5. controlling temp type knockout tower according to claim 1 and 2, is characterized in that, described circulation pipe is individual layer circulation pipe or double-deck circulation pipe.
6. controlling temp type knockout tower according to claim 1, is characterized in that, described knockout tower tower body is comprised of at least one pipe.
7. according to the controlling temp type knockout tower described in claim 1 or 6, it is characterized in that, described knockout tower tower body is tubulation form, and is provided with deflection plate between described tubulation.
8. controlling temp type knockout tower according to claim 6, is characterized in that, is provided with the assembly of at least one deflection plate or at least one deflector or at least one disk and annulus in described pipe.
9. controlling temp type knockout tower according to claim 8, is characterized in that, the assembly of described deflection plate or deflector or disk and annulus is located at top or middle part or bottom or the whole pipe of pipe.
10. air temperature type separation method, it is characterized in that, material to be separated is put into evaporimeter (3) to be heated, the circulation fluid of the rising steam producing in evaporimeter (2) in knockout tower tower body and circulation pipe (5) carries out exchange heat, circulation fluid absorbs after heat is partly vaporized and enters heat exchanger (6), enters knockout tower tower body (1) bottom reuse through heat exchanger (6); Heavy constituent in knockout tower tower body (1) evaporimeter (3) that liquefy back, also liquefies to the cool condenser of tower top (2) after light component rising concentrate minute, enters collector (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685705.7A CN103611327B (en) | 2013-12-16 | 2013-12-16 | Controlling temp type knockout tower and separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310685705.7A CN103611327B (en) | 2013-12-16 | 2013-12-16 | Controlling temp type knockout tower and separation method |
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| CN103611327A true CN103611327A (en) | 2014-03-05 |
| CN103611327B CN103611327B (en) | 2016-01-20 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6375806B1 (en) * | 1992-09-11 | 2002-04-23 | Allen Process Systems, L.L.C. | Desiccant reconcentration with control of pollutant gases and vapors |
| JP2003117305A (en) * | 2001-10-12 | 2003-04-22 | Sumitomo Chem Co Ltd | Method for controlling side cut column, and side cut column used therefor |
| CN201179358Y (en) * | 2008-03-24 | 2009-01-14 | 广饶县福利树脂厂 | Control device for temperature of dimer acid molecular distillation |
| CN201419030Y (en) * | 2009-06-12 | 2010-03-10 | 江苏华奥高科技发展有限公司 | Totally-enclosed recycling device for low-boiling point solvent |
| CN102671401A (en) * | 2011-03-12 | 2012-09-19 | 倪建英 | Alcohol recovery tower |
| CN203609883U (en) * | 2013-12-16 | 2014-05-28 | 张家庭 | Temperature-controlled separation tower |
-
2013
- 2013-12-16 CN CN201310685705.7A patent/CN103611327B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6375806B1 (en) * | 1992-09-11 | 2002-04-23 | Allen Process Systems, L.L.C. | Desiccant reconcentration with control of pollutant gases and vapors |
| JP2003117305A (en) * | 2001-10-12 | 2003-04-22 | Sumitomo Chem Co Ltd | Method for controlling side cut column, and side cut column used therefor |
| CN201179358Y (en) * | 2008-03-24 | 2009-01-14 | 广饶县福利树脂厂 | Control device for temperature of dimer acid molecular distillation |
| CN201419030Y (en) * | 2009-06-12 | 2010-03-10 | 江苏华奥高科技发展有限公司 | Totally-enclosed recycling device for low-boiling point solvent |
| CN102671401A (en) * | 2011-03-12 | 2012-09-19 | 倪建英 | Alcohol recovery tower |
| CN203609883U (en) * | 2013-12-16 | 2014-05-28 | 张家庭 | Temperature-controlled separation tower |
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| CN103611327B (en) | 2016-01-20 |
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