CN101991968B - Internal heat integration energy-saving rectification device and assembly method thereof - Google Patents
Internal heat integration energy-saving rectification device and assembly method thereof Download PDFInfo
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- CN101991968B CN101991968B CN201010507301A CN201010507301A CN101991968B CN 101991968 B CN101991968 B CN 101991968B CN 201010507301 A CN201010507301 A CN 201010507301A CN 201010507301 A CN201010507301 A CN 201010507301A CN 101991968 B CN101991968 B CN 101991968B
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- 238000000034 method Methods 0.000 title abstract description 35
- 230000010354 integration Effects 0.000 title description 10
- 238000012856 packing Methods 0.000 claims abstract description 29
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 4
- 241000237983 Trochidae Species 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 18
- 241000282326 Felis catus Species 0.000 description 14
- 238000000605 extraction Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- -1 80% (wt%) Chemical compound 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N EtOH Substances CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000011555 saturated liquid Substances 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- DALDUXIBIKGWTK-UHFFFAOYSA-N benzene;toluene Chemical compound C1=CC=CC=C1.CC1=CC=CC=C1 DALDUXIBIKGWTK-UHFFFAOYSA-N 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- RUSXXJKVMARGOF-UHFFFAOYSA-N cyclohexane;heptane Chemical compound C1CCCCC1.CCCCCCC RUSXXJKVMARGOF-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
本发明涉及一种内部热集成节能精馏装置及其装配方法。该装置包括精馏塔段、提馏塔段、换热元件，精馏塔段顶部筒体，提馏塔段塔体，塔顶管板，填料腔，塔底管板，精馏塔段上部塔体，精馏塔段中部塔体，精馏塔段下部塔体，精馏塔段底部筒体。其中：精馏塔段为内塔段，提馏塔段为外塔段；精馏塔段中部塔体为倒截锥形构型；塔底管板的上端面开有截锥形凹槽。本发明结构简单，便于两塔段的连接、组装与拆卸。在精馏塔段换热管外设置翅片式换热元件，以充分利用空间，增加内、外两塔段的热交换面积，而且利用高效的散装或规整填料，可以大幅度的提高气液两相间的传质面积，提高了内、外两塔段的传质效果。
The invention relates to an internal heat integrated energy-saving rectification device and an assembly method thereof. The device includes rectification tower section, stripping tower section, heat exchange element, top shell of rectification tower section, tower body of stripping tower section, tower top tube sheet, packing cavity, tower bottom tube sheet, upper part of rectification tower section The tower body, the middle tower body of the rectification tower section, the lower tower body of the rectification tower section, and the bottom cylinder body of the rectification tower section. Among them: the rectifying tower section is the inner tower section, and the stripping tower section is the outer tower section; the tower body in the middle of the rectifying tower section is an inverted truncated conical configuration; the upper end surface of the bottom tube plate is provided with a truncated conical groove. The invention has a simple structure and is convenient for the connection, assembly and disassembly of the two tower sections. Finned heat exchange elements are installed outside the heat exchange tubes of the rectification tower section to make full use of the space and increase the heat exchange area of the inner and outer tower sections, and the use of efficient bulk or structured packing can greatly improve the gas-liquid efficiency. The mass transfer area between the two phases improves the mass transfer effect of the inner and outer tower sections.
Description
Technical field
The present invention relates to distillation technology field and rectifying column system, especially, relate to a kind of internal heat integration energy-saving rectifying device and assembly method thereof.
Background technology
Rectifying is to use the widest a kind of industrial process for separating the present age, has been widely used in industrial departments such as chemical industry, oil, food, light industry.Though development of science and technology, new separation technology have begun commercial Application, in certain period, the dominant position of distillation technology can't be shaken.
Rectifying separation technology maturation, easy for industrialized, but shortcoming be consume energy very big.Traditional rectifying separation, the input energy consumption accounts for more than 23% of industrial total energy consumption, and this is very important in energy 21 century in short supply day by day.
According to the second law of thermodynamics, energy-conservation key is to save available energy.Its key is the irreversibility of the process that reduces.The irreversibility of process is that motive force is big more because there is motive force in process, and then irreversibility is also big more.Energy-conservation for distillation process, set up interconderser and intermediate reboiler and be proved to be a kind of distance that reduces between operating line and the balanced line, thereby reach simple, the effective method of energy-saving effect.
Though can reach good energy-saving effect through a plurality of intercondersers and intermediate reboiler are set; But on engineering, should not adopt too many interconderser, reboiler; Being because it has increased the complexity of flow process greatly on the one hand, is because the energy-saving benefit that brings thus is not enough to compensate the equipment investment of increase on the other hand.This has just greatly limited the energy-saving potential of intercooler and intermediate reboiler.According to the thinking of the reversible rectifying of ideal, design a kind of novel tower inner member, high temperature rectifying column section and low temperature are carried heat up in a steamer the tower section and carried out internal heat exchange.Through wall-type heat exchange, heat is carried from high temperature rectifying column Duan Chuanxiang low temperature heated up in a steamer the tower section.Not only can reach the energy-saving effect of a plurality of intercondersers and intermediate reboiler, and can not increase too many equipment investment.
Want to realize above-mentioned distillation process, with regard to must solve tower intersegmental problems such as connection, assembling and sealing.
Summary of the invention
The present invention is directed to above-mentioned distillation process energy consumption problem of higher and how to solve in the distillation process high temperature rectifying column section and put forward the problems such as being connected, assembling and seal of heating up in a steamer the tower section, proposed a kind of low energy consumption, novel energy-saving rectifying device and assembly method thereof with low temperature.
The present invention realizes through following technical proposals.
A kind of internal heat integration energy-saving rectifying device of the present invention and assembly method thereof, this device comprise the rectifying column section, carry and heat up in a steamer tower section, heat exchange element, rectifying column section upper sleeve; Carry and heat up in a steamer tower section tower body, cat head tube sheet, packing cavity; Tower bottom tube plate, rectifying column section top tower body, rectifying column section middle part tower body; Rectifying column pars infrasegmentalis tower body, rectifying column section bottom cylindrical shell.Wherein: rectifying column section 2 is interior tower section, carries heating up in a steamer tower section 9 and being outer tower section; Rectifying column section middle part tower body 40 is the configuration of falling the truncated cone shape; The upper surface of tower bottom tube plate 34 has truncated cone shape groove 28.
Have rectangular ring groove 33 on the bottom face of said truncated cone shape groove 28.
Said packing cavity 25 is positioned at the below of cat head tube sheet 23.
The assembly method of apparatus of the present invention; It is characterized in that rectifying column section top tower body 39, rectifying column section middle part tower body 40, rectifying column pars infrasegmentalis tower body 41, heat exchange element 15, gusset 26, gripper shoe 27 are interconnected to an integral body, i.e. rectifying column section unitary member 42.
The assembly method of apparatus of the present invention is characterized in that concrete assemble method is following:
A) place gasket seal 30 in the rectangular ring groove 33; Rectifying column section packing layer gripper shoe 31 is placed the Support Position in the rectifying column pars infrasegmentalis tower body 41, then rectifying column section unitary member 42 is passed pore 35 along the truncated cone shape groove 28 on the tower bottom tube plate 34 from top to down; Pad 36 was overlapped rectifying column pars infrasegmentalis tower body 41; Then securing member 37 is screwed in along the screw thread on the rectifying column pars infrasegmentalis tower body 41 bottom outer peripheral faces 38 from bottom to top.
B) tower bottom tube plate 34 is placed on the connector 18d; Heat up in a steamer tower section packing layer gripper shoe 43 and be fixed on and carry on the tower wall that heats up in a steamer tower section tower body 20 bottoms carrying; Then, will carry and heat up in a steamer tower section tower body 20 and overlapped rectifying column section unitary member 42 from top to bottom, and use 17 pairs of connectors of connector securing member (18c and 18d) to carry out fastening.
C) respectively with rectifying column section packing layer 2 (b) with carry and heat up in a steamer tower section packing layer 9 (b) and insert the rectifying column section and heat up in a steamer in the tower section with carrying; Then, will carry again and heat up in a steamer tower section liquid distribution trough 45 and place and carry the top of heating up in a steamer tower section packing layer 9 (b).
D) cat head tube sheet 23 is placed on the connector 18b, make rectifying column section top tower body 39 from bottom to top pass the pore of packing cavity 25 and the pore of cat head tube sheet 23 successively; Then; Airtight and watertight padding 24 is placed the annular space between rectifying column section top tower body 39 and the packing cavity 25; With top indentation sealing filler 24 tops of gland 22, use gland securing member 21 that gland 22 and cat head tube sheet 23 are fastenedly connected again by annular space; Rectifying column section upper sleeve 16 is placed cat head tube sheet 23 and gland 22 tops from top to bottom; Use 17 couples of connector 18a of connector securing member and 18b to carry out fastening.
The connection of internal heat integration energy-saving rectifying device of the present invention and assembly method thereof the inside and outside two tower sections in integrated tower of all internal heat or the intersegmental internal heat integrating process of tower, assembling and make up.
The invention has the advantages that:
1) adopt technology of the present invention and member, simple in structure under the situation that guarantees inside and outside two tower section sealing effectiveness, be convenient to connection, the assembly and disassembly of two tower sections.
2) the present invention is provided with finned heat exchange element outside rectifying column section heat exchanger tube; To make full use of the space; Increase the heat exchange area of inside and outside two tower sections; And utilize in bulk efficiently or structured packing, and can significantly improve the mass transfer area between gas-liquid two-phase, improved the mass transfer effect of inside and outside two tower sections.
3) design the effective seal structure between the inside and outside tower body, both can guarantee the sealing between the inside and outside tower, can adapt to the expansion path difference variation that inside and outside tower body temperature difference causes again.
Description of drawings
Figure 1A: be the integrated Tata body structure of internal heat in apparatus of the present invention sketch map;
Figure 1B: be the local enlarged diagram in T place in Figure 1A device;
Fig. 1 C: be the local enlarged diagram in B place in Figure 1A device;
Fig. 2 A: be rectifying column section tower body general structure front view in apparatus of the present invention;
Fig. 2 B: be rectifying column section tower body general structure vertical view in apparatus of the present invention;
Fig. 3: be schematic flow sheet under the integrated rectifying column of internal heat of the present invention;
Wherein, 1-rectifying column section gas-phase feed pipe, 2 (a)-rectifying column section headrooms, 2 (b)-rectifying column section packing layers, 2 (c)-rectifying column section bottom spaces, 2-rectifying column section; 3-rectifying column section overhead vapours outlet, the 4-condenser, 5-rectifying column section overhead condensation liquid return duct, 6-rectifying column section overhead product extraction pipeline, liquid outlet tube at the bottom of the 7-rectifying column section tower, 8-are carried and are heated up in a steamer tower section liquid phase feeding pipe; 9 (a)-carry and heat up in a steamer tower section headroom, 9 (b)-carry and heat up in a steamer tower section packing layer, 9 (c)-carry and heat up in a steamer tower section bottom space, 9-carries and heats up in a steamer the tower section, and 10-carries and heats up in a steamer liquid outlet tube at the bottom of the tower section tower; 11-reboiler, 12-are carried and are heated up in a steamer tower section tower bottom steam inlet tube, and 13-carries and heats up in a steamer tower section bottom product extraction pipeline, and 14-carries and heats up in a steamer tower section overhead vapours outlet, 15-heat exchange element; 16-rectifying column section upper sleeve, 17-connector securing member, 18-connector, 19-gasket seal, 20-are carried and are heated up in a steamer tower section tower body; 21-gland securing member, 22-gland, 23-cat head tube sheet, 24-airtight and watertight padding, 25-packing cavity; The 26-gusset, 27-gripper shoe, 28-truncated cone shape groove, 29-supporting surface, 30-gasket seal; 31-rectifying column section packing layer gripper shoe, the 32-rectangular ring is protruding, 33-rectangular ring groove, 34-tower bottom tube plate, 35-pore; The 36-pad, 37-securing member, 38-screw thread, 39-rectifying column section top tower body, 40-rectifying column section middle part tower body; 41-rectifying column pars infrasegmentalis tower body, 42-rectifying column section unitary member, 43-are carried and are heated up in a steamer tower section packing layer gripper shoe, 44-rectifying column section bottom cylindrical shell, and 45-carries and heats up in a steamer tower section liquid distribution trough.
The specific embodiment
Internal heat integration energy-saving rectifying device of the present invention and assembly method thereof are adaptable across integrated tower of all internal heat or the intersegmental internal heat integrating process of tower.Heat up in a steamer being connected, assembling and being combined as the assembly method that example is explained apparatus of the present invention of tower section with rectifying column section in the integrated rectifying column of internal heat shown in Fig. 3 flow process with carrying below, but therefore do not limit the scope of application of apparatus of the present invention and assembly method thereof.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.
Figure 1A is the integrated Tata body structure of an internal heat sketch map in apparatus of the present invention, and Fig. 3 is a schematic flow sheet under the integrated tower of internal heat; Flow process as shown in Figure 3, it is common rectifying tower to be divided into the rectifying column section heat up in a steamer two tower sections of tower section with carrying; The rectifying column section is heated up in a steamer the tower section and is positioned at a main tower with carrying, and is separated by heat exchanger components, and structural representation is seen Figure 1A, Figure 1B and Fig. 1 C.
Wherein: the rectifying column section is interior tower section, carries that to heat up in a steamer the tower section be outer tower section; The operating pressure of rectifying column section and temperature are higher than puies forward the operating pressure and the temperature of heating up in a steamer the tower section; So intersegmental internal heat exchange that exists of two towers; Heat passes to carry from the rectifying column section through heat exchanger components and heats up in a steamer the tower section; Integrated through the intersegmental internal heat of two towers, can reduce the required overhead condensation load of rectifying column section and carry and heat up in a steamer the required tower still thermic load of tower section.
Flow process as shown in Figure 3, the gas-phase feed V1 of rectifying column section 2 gets into the bottom of rectifying column section 2 along rectifying column section gas-phase feed pipe 1, and rising steam gets into condenser 4 along rectifying column section 2 through rectifying column section overhead vapours outlet 3; The rising steam forms condensate liquid after condenser 4 condensations; As overhead product D1 extraction, another part gets into the top of rectifying column sections 2 along rectifying column section overhead condensation liquid return duct 5 to a condensate liquid part that goes out condenser 4 along rectifying column section overhead product extraction pipeline 6; Liquid L1 liquid outlet tube 7 extraction at the bottom of the rectifying column section tower at the bottom of the rectifying column section tower.Carry the liquid phase feeding L1 that heats up in a steamer tower section 9 and heat up in a steamer tower section liquid phase feeding pipe 8 and get into to carry and heat up in a steamer tower section 9 along carrying, dropping liq heats up in a steamer tower section 9 and gets into to carry and heat up in a steamer liquid outlet tube 10 at the bottom of the tower section tower along carrying; A liquid part that goes out to carry to heat up in a steamer liquid outlet tube 10 at the bottom of the tower section tower is heated up in a steamer tower section bottom product extraction pipeline 13 and is heated up in a steamer tower section bottom product B2 extraction as carrying through carrying, and another part liquid gets into reboiler 11; This part liquid forms saturated vapor after reboiler 11 heating; The saturated vapor that goes out reboiler 11 heats up in a steamer tower section tower bottom steam inlet tube 12 and gets into and carry the bottom of heating up in a steamer tower section 9 along carrying; Carry and heat up in a steamer tower section overhead vapours V2 and heat up in a steamer 14 extraction of tower section overhead vapours outlet along carrying.
Below in conjunction with other accompanying drawing and the specific embodiment the present invention is done further explain.
Figure 1A is the integrated Tata body structure of an internal heat sketch map in apparatus of the present invention.Rectifying column section upper sleeve 16 with connector 18a, carry and heat up in a steamer tower section tower body 20 and connector (18b, 18c), rectifying column section bottom cylindrical shell 44 and connector 18d and can adopt modes such as welding, bonding, riveted joint to be connected.Figure 1B is the local enlarged diagram in T place in Figure 1A device.Gland 22 is positioned at the bottom of rectifying column section headroom 2 (a), between cat head tube sheet 23 and the packing cavity 25.Cat head tube sheet 23 is between connector 18a and connector 18b.Packing cavity 25 is positioned at the below of cat head tube sheet 23.Fig. 1 C is the local enlarged diagram in B place in Figure 1A device.Truncated cone shape groove 28 is positioned at the upper surface of tower bottom tube plate 34, and supporting surface 29 is positioned at the bottom face of truncated cone shape groove 28.Rectangular ring protruding 32 is positioned at the lower surface of gripper shoe 27.Rectangular ring groove 33 is positioned at the bottom face of truncated cone shape groove 28.Fig. 2 A and Fig. 2 B are rectifying column section tower body general structure sketch map in apparatus of the present invention.Rectifying column section middle part tower body 40 is the configuration of falling the truncated cone shape, and its upper surface is connected with the lower surface of rectifying column section top tower body 39, and its lower surface is connected with the upper surface of rectifying column pars infrasegmentalis tower body 41.Rectifying column section top tower body 39, rectifying column section middle part tower body 40, rectifying column pars infrasegmentalis tower body 41, heat exchange element 15, gusset 26, gripper shoe 27 are interconnected to an integral body, i.e. rectifying column section unitary member 42.Gusset 26 is positioned at the top of rectifying column pars infrasegmentalis tower body 41 outer peripheral faces and gripper shoe 27.Rectangular ring protruding 32 is positioned at the lower surface of gripper shoe 27.The bottom outer peripheral face of rectifying column pars infrasegmentalis tower body 41 is provided with screw thread 38.Securing member 37 is positioned at rectifying column pars infrasegmentalis tower body 41 bottom outer peripheral faces, is connected through screw thread 38 with rectifying column pars infrasegmentalis tower body 41.Pad 36 is positioned at the outer peripheral face outside, rectifying column pars infrasegmentalis tower body 41 bottom, is between securing member 37 upper surfaces and tower bottom tube plate 34 lower surfaces.
On University Of Tianjin's internal heat integration energy-saving rectifying column experimental provision, carried out the performance test of internal heat integration energy-saving rectifying device of the present invention and assembly method thereof.Concrete operations are following:
At first; Place gasket seal 30 in the rectangular ring groove 33; Rectifying column section packing layer gripper shoe 31 is placed the Support Position in the rectifying column pars infrasegmentalis tower body 41, then rectifying column section unitary member 42 is passed pore 35 along the truncated cone shape groove 28 on the tower bottom tube plate 34 from top to down; Pad 36 was overlapped rectifying column pars infrasegmentalis tower body 41; Then securing member 37 is screwed in along the screw thread on the rectifying column pars infrasegmentalis tower body 41 bottom outer peripheral faces 38 from bottom to top.
Secondly, tower bottom tube plate 34 is placed on the connector 18d; Heat up in a steamer tower section packing layer gripper shoe 43 and be fixed on and carry on the tower wall that heats up in a steamer tower section tower body 20 bottoms carrying; Then, will carry and heat up in a steamer tower section tower body 20 and overlapped rectifying column section unitary member 42 from top to bottom, and use 17 pairs of connectors of connector securing member (18c and 18d) to carry out fastening.
Then, respectively with rectifying column section packing layer 2 (b) with carry and heat up in a steamer tower section packing layer 9 (b) and insert the rectifying column section and heat up in a steamer in the tower section with carrying; Then, will carry again and heat up in a steamer tower section liquid distribution trough 45 and place and carry the top of heating up in a steamer tower section packing layer 9 (b).
At last, cat head tube sheet 23 is placed on the connector 18b, make rectifying column section top tower body 39 from bottom to top pass the pore of packing cavity 25 and the pore of cat head tube sheet 23 successively; Then; Airtight and watertight padding 24 is placed the annular space between rectifying column section top tower body 39 and the packing cavity 25; With top indentation sealing filler 24 tops of gland 22, use gland securing member 21 that gland 22 and cat head tube sheet 23 are fastenedly connected again by annular space; Rectifying column section upper sleeve 16 is placed cat head tube sheet 23 and gland 22 tops from top to bottom; Use 17 couples of connector 18a of connector securing member and 18b to carry out fastening.
Technology of the present invention and device are adaptable across all rectifying separation processes; For the power savings advantages of the present invention in the rectifying field is described better; Choose two embodiment below the present invention is explained, but therefore do not limit the scope of application of present technique and device.
Embodiment one
The rectifying column section is that benzene-toluene system separates, and carries and heats up in a steamer the tower section for the methanol-water system separates, and adopts flow process according to the invention, and is as shown in Figure 3.Rectifying column section tower spirit phase inlet amount 1000kg/h, feed composition: benzene, 80% (wt%), toluene, 20% (wt%), the feed heat situation is the saturated vapor charging.Rectifying column section number of theoretical plate is 20, and operating pressure is 1.5atm.Rectifying column section overhead product produced quantity is 645.0kg/h, and the extraction product purity is controlled at more than 99.9% (wt%); The rectifying column section with carry that to heat up in a steamer the total heat exchange amount of tower intersegmental part be 187.9kW.Carry and heat up in a steamer tower section cat head liquid phase inlet amount 1000kg/h, feed composition: methyl alcohol, 30% (wt%), water, 70% (wt%), the feed heat situation is the saturated liquid charging.Carry that to heat up in a steamer tower section number of theoretical plate be 20, operating pressure is a normal pressure.Carry that to heat up in a steamer tower section bottom product produced quantity be 575.2kg/h, the extraction product purity is controlled at more than 99.9% (wt%).The main public work energy of this process consumes as shown in table 1.
Table 1 public work energy consumption
For ease of the present invention being described, with technology according to the invention and device and two conventional rectification tower section T ' in the technical advantage aspect the energy efficiency
1And T '
2Compare.T '
1Tower and T '
2Feed rate, composition and feed heat situation are all identical with the present invention in the tower flow process, T '
1Tower and T '
2The tower number of theoretical plate is 20, T '
1The tower operating pressure is 1.5atm, T '
2The tower operating pressure is a normal pressure.In addition, T '
1Tower and T '
2The extraction product flow of tower is all identical with the present invention with composition requirement.T '
1Tower and T '
2The Comparative Examples that tower conduct and the embodiment of the invention one compare.
Be used for the public work energy consumption of the Comparative Examples of embodiment one contrast as shown in table 2.
Table 2 public work energy consumption
The energy consumption result of the embodiment of the invention one and the energy consumption result of Comparative Examples are compared, and comparing result is as shown in table 3.
Table 3 public work energy consumption result contrast
By the public work energy consumption of table 3 correction data as a result, can find out that rectifying column section condensation load has saved 54.5% among the embodiment one, carry and heat up in a steamer tower section thermic load and saved 97.5%.Therefore, adopt internal heat integration energy-saving rectifying device of the present invention and assembly method thereof, can reduce the public work consumption of process significantly, realize object of energy saving.
Embodiment two
The rectifying column section is that cyclohexane-heptane system separates, and carries that to heat up in a steamer the tower section be that methyl alcohol-ethanol system separates, and adopts flow process according to the invention, and is as shown in Figure 3.Rectifying column section tower spirit phase inlet amount 1000kg/h, feed composition: cyclohexane, 85% (wt%), heptane, 15% (wt%), the feed heat situation is the saturated vapor charging.Rectifying column section number of theoretical plate is 20, and operating pressure is 1.5atm.Rectifying column section overhead product produced quantity is 600.0kg/h, and the extraction product purity is controlled at more than 99.5% (wt%); The rectifying column section with carry that to heat up in a steamer the total heat exchange amount of tower intersegmental part be 216.9kW.Carry and heat up in a steamer tower section cat head liquid phase inlet amount 1000kg/h, feed composition: methyl alcohol, 30% (wt%), ethanol, 70% (wt%), the feed heat situation is the saturated liquid charging.Carry that to heat up in a steamer tower section number of theoretical plate be 20, operating pressure is a normal pressure.Carry that to heat up in a steamer tower section bottom product produced quantity be 175.0kg/h, the extraction product purity is controlled at more than 99.5% (wt%).The main public work energy of this process consumes as shown in table 4.
Table 4 public work energy consumption
For ease of the present invention being described, with technology according to the invention and device and two conventional rectification tower section T ' in the technical advantage aspect the energy efficiency
1And T '
2Compare.T '
1Tower and T '
2Feed rate, composition and feed heat situation are all identical with the present invention in the tower flow process, T '
1Tower and T '
2The tower number of theoretical plate is 20, T '
1The tower operating pressure is 1.5atm, T '
2The tower operating pressure is a normal pressure.In addition, T '
1Tower and T '
2The extraction product flow of tower is all identical with the present invention with composition requirement.T '
1Tower and T '
2The Comparative Examples that tower conduct and the embodiment of the invention two compare.
Be used for the public work energy consumption of the Comparative Examples of embodiment two contrast as shown in table 5.
Table 5 public work energy consumption
The energy consumption result of the embodiment of the invention two and the energy consumption result of Comparative Examples are compared, and comparing result is as shown in table 6.
Table 6 public work energy consumption result contrast
By the public work energy consumption of table 6 correction data as a result, can find out that rectifying column section condensation load has saved 56.1% among the embodiment two, carry and heat up in a steamer tower section thermic load and saved 100.0%.Therefore, adopt internal heat integration energy-saving rectifying device of the present invention and assembly method thereof, can reduce the public work consumption of process significantly, realize object of energy saving.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010507301A CN101991968B (en) | 2010-10-14 | 2010-10-14 | Internal heat integration energy-saving rectification device and assembly method thereof |
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| CN102188834B (en) * | 2011-05-06 | 2013-03-06 | 天津大学 | Internal heat integration film-reduction distillation device and heat exchange wall structure |
| CN102350073B (en) * | 2011-06-30 | 2014-05-21 | 天津大学 | A heat exchange wall structure of a falling film distillation unit with internal heat integration |
| CN102641605A (en) * | 2012-04-26 | 2012-08-22 | 苏州市金翔钛设备有限公司 | Acetic acid recovery tower |
| CN104001343B (en) * | 2014-05-14 | 2015-10-28 | 华南理工大学 | A kind of internally heat integrated rectifying column of augmentation of heat transfer |
| CN112742057A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Internal energy integrated rectifying device and rectifying method using same |
| CN112742056B (en) * | 2019-10-31 | 2023-01-10 | 中国石油化工股份有限公司 | Internal energy integrated rectifying device for three-component separation and rectifying method using internal energy integrated rectifying device |
| CN111500306B (en) * | 2020-06-01 | 2024-04-12 | 河南孟飞实业有限公司 | A double-layer distillation tower for preparing light white oil |
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| JP3990202B2 (en) * | 2002-06-17 | 2007-10-10 | 木村化工機株式会社 | Internal heat exchange distillation column |
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| JP3990202B2 (en) * | 2002-06-17 | 2007-10-10 | 木村化工機株式会社 | Internal heat exchange distillation column |
| JP3990203B2 (en) * | 2002-06-17 | 2007-10-10 | 木村化工機株式会社 | Internal heat exchange distillation column and method for producing the same |
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| JP特开2000－229202A 2000.08.22 |
| JP特开2001－137606A 2001.05.22 |
| JP特许第3990202号B2 2004.01.22 |
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