CN108325232B - Novel reboiler for preventing material from polymerizing - Google Patents
Novel reboiler for preventing material from polymerizing Download PDFInfo
- Publication number
- CN108325232B CN108325232B CN201810436959.8A CN201810436959A CN108325232B CN 108325232 B CN108325232 B CN 108325232B CN 201810436959 A CN201810436959 A CN 201810436959A CN 108325232 B CN108325232 B CN 108325232B
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- China
- Prior art keywords
- connecting plate
- heating
- shell
- cover
- admittedly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 title claims abstract description 25
- 230000000379 polymerizing effect Effects 0.000 title abstract description 5
- 238000009423 ventilation Methods 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 46
- 238000003756 stirring Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000002309 gasification Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- AGSPXMVUFBBBMO-UHFFFAOYSA-N beta-aminopropionitrile Chemical compound NCCC#N AGSPXMVUFBBBMO-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
- B01D3/322—Reboiler specifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
Abstract
The invention discloses a novel reboiler for preventing materials from polymerizing, which comprises a ventilation cover, an air inlet connecting pipe, a liquid outlet pipe and a shell arranged on one side of the ventilation cover, wherein the top of the ventilation cover is fixedly connected with the air inlet connecting pipe, the bottom of the ventilation cover is provided with the liquid outlet pipe, the right end of the ventilation cover is provided with a first connecting plate in a welded connection mode, the middle part of the first connecting plate is welded with one end of a partition plate, the other end of the partition plate is welded with the middle part of the inner wall of the left end of the ventilation cover, the partition plate separates the ventilation cover into a first air inlet cavity and a second air inlet cavity, and the first connecting plate is fixedly connected with the second connecting plate through fastening bolts.
Description
Technical field:
the invention relates to the technical field of rectification, in particular to a novel method for preventing a novel reboiler for material polymerization.
The background technology is as follows:
reboiler is widely used in chemical plants, and the reboiler (also called reboiler) can make the liquid vaporized again, is a special heat exchanger capable of exchanging heat and vaporizing the liquid at the same time; the multi-component material is used with a fractionating tower; the materials are heated and expanded or even vaporized in the reboiler, so that the density is reduced, and the materials leave the vaporization space and smoothly return to the tower. After long-term use, the heat exchange tube is internally provided with material scale, when the scale layer is thicker and thicker, the production efficiency is reduced, and even production stopping accidents are caused. For materials which are easy to polymerize when heated, the probability of occurrence of safety accidents can be increased when the materials polymerize and coke occurs in the actual production process. The horizontal reboiler in the industry generally adopts a heat exchange tube circular layout structure, the tube spacing is too dense, the heat transfer effect between materials is poor, for heat sensitive materials which are easy to polymerize, the phenomenon of coking is easy to occur due to high local temperature, potential safety hazards are brought to production enterprises and operators, and the invention provides a novel method for preventing the materials from polymerizing.
The invention comprises the following steps:
the invention aims to solve the technical problem of providing a novel reboiler which has the advantages of simple structure, practicality, convenience and material polymerization prevention.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the utility model provides a prevent novel reboiler of material polymerization, is in including ventilation hood, inlet connection pipe, drain pipe and setting the casing of ventilation hood one side, the top fixed connection inlet connection pipe of ventilation hood, the bottom of ventilation hood is equipped with the drain pipe, first connecting plate is installed through welded connected mode to the right-hand member of ventilation hood, the middle part of first connecting plate and the one end welding of division board, the other end of division board with the welding of the left end inner wall middle part of ventilation hood, the division board separates the ventilation hood is first inlet chamber, second inlet chamber, first connecting plate passes through fastening bolt and second connecting plate fixed connection, the second connecting plate with the port welding machine of casing, be equipped with first heating nest of tubes in the casing, the one end of first heating pipe runs through in proper order the second connecting plate first connecting plate with the inlet chamber intercommunication, the other end of first heating pipe runs through in proper order the second connecting plate first connecting plate with the chamber intercommunication of giving vent to anger, the one end of second connecting plate is run through in proper order the first connecting plate with the inlet chamber intercommunication, the second connecting plate is separated into the first connecting plate and is equipped with the second inlet connection chamber, the first connecting plate is equipped with the gasification top.
Preferably, the terminal of casing is installed through welded mode and is fixed plate, the positive and negative motor of top bolted connection of fixed plate, positive and negative motor passes through the shaft coupling and rotates with the connecting rod and be connected, the terminal of connecting rod extends to inside the casing, the inside fixed connection puddler of connecting rod.
Preferably, two vertical supporting frames are arranged in the shell at intervals, and the first heating tube group and the second heating tube group respectively penetrate through the supporting frames.
Preferably, the first heating tube group is located inside the second heating tube group.
Preferably, a sealing gasket is arranged between the first connecting rod and the second connecting rod.
Preferably, the thickness of the stirring blade is gradually increased from one side to the other side, and two sides of the stirring blade are fixedly connected with the stirring claw.
Preferably, the cross section of the ventilation cover is rectangular, and the first connecting rod and the second connecting rod are symmetrically arranged about the partition plate.
The beneficial effects of the invention are as follows: the invention has simple structure, is convenient and practical, solves the problems that the heat transfer effect among materials of the existing reboiler is poor, and the polymerization and coking phenomena are easy to occur due to high local temperature for the heat sensitive materials, shortens the material rectifying time, improves the product yield, reduces the cleaning frequency of a heat exchange tube, and is provided with a positive and negative motor at the tail end, the output end of the positive and negative motor is connected with a stirring rod, and the stirring rod rotates and the liquefied water collides with the inner wall of a heating tube in the rotating process, and the liquid in the shell generates micro-vibration force on the wall of the heating tube due to the movement, so that the wall of the heating tube can not form dirt.
Description of the drawings:
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of a ventilation hood of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a schematic view of the structure of the stirring rod of the present invention;
FIG. 5 is a front view of a stirring rod of the present invention;
wherein: 1-a ventilation hood; 2-an air inlet connection pipe; 3-a first connection plate; 4-a second connection plate; 5-fastening bolts; 6-a housing; 7-a first heating tube group; 8-a first support plate; 9-a second heating tube set; 10-gasifying the outlet pipe; 11-stirring blades; 12-connecting rod; 13-a coupling; 14-an electric motor; 15-dividing plates; 16-a liquid outlet pipe; 17-a second support plate; 18-a gasket; 19-liquefying the exit tube; 20-a gasket; 21-a fixed plate; 101-an air inlet cavity; 102-an air outlet cavity; 1101-stirring rake.
The specific embodiment is as follows:
the invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Example 1
As shown in fig. 1 and fig. 2, a novel reboiler for preventing material polymerization comprises a gas exchange cover (1), a gas inlet connecting pipe (2), a liquid outlet pipe (16) and a shell (6) arranged on one side of the gas exchange cover (1), and is characterized in that: the top fixed connection of cover (1) takes over (2) admitting air of taking a breath, the bottom of cover (1) is equipped with drain pipe (16) admittedly, first connecting plate (3) are installed through welded connected mode to the right-hand member of cover (1) admittedly, the one end welding of first connecting plate (3) and division board (15), the other end of division board (15) with the left end inner wall middle part welding of cover (1) admittedly, division board (15) separate cover (1) admittedly is first chamber (101) advance chamber (102) for the second, first connecting plate (3) pass through fastening bolt (3) and second connecting plate (4) fixed connection, second connecting plate (4) with port welding machine of casing (6), be equipped with first heating nest of tubes (7), second heating nest of tubes (9) in casing (6), the one end of first heating pipe (7) run through in proper order second connecting plate (4) first connecting plate (3) with chamber (101) intercommunication, second chamber (102) are advanced through in proper order to first connecting plate (7), second heating pipe (4) and second connecting plate (4) run through in proper order first connecting plate (4) and second connecting plate (4) and the end of giving vent to anger (4) and connecting plate (4) are advanced The first connecting plate (3) is communicated with the air inlet cavity (101), the other end of the second heating pipe (9) sequentially penetrates through the second connecting plate (4), the first connecting plate (3) is communicated with the air outlet cavity (102), a gasification outlet pipe (10) is arranged at the top end of the shell (6), a liquefaction outlet pipe (19) is arranged at the bottom of the shell (6), two vertical supporting frames (8) are arranged at intervals inside the shell (6), the first heating pipe group (7) and the second heating pipe group (9) respectively penetrate through the supporting frames (8) to have a stable effect, the first heating pipe group (7) is positioned at the inner side of the second heating pipe group (9), the sealing gasket (18) is arranged between the second connecting rods (4) of the first connecting rods (3) and has sealing and tight functions, the cross section of the ventilation cover (1) is rectangular, the first connecting rods (3) and the second connecting rods (4) are symmetrically arranged relative to the partition plate (15), the invention has simple structure, is convenient and practical, solves the problems that the heat transfer effect between materials of the existing reboiler is poor, and the polymerization and coking phenomena are easy to occur due to high local temperature for heat sensitive polymer materials, shortens the material rectifying time, the product yield is improved, and the cleaning frequency of the heat exchange tube is reduced.
In the embodiment, beta-aminopropionitrile is taken as a raw material, 4000L of beta-aminopropionitrile is put into a reboiler, a vacuum pump is started, 110-130 ℃/10kpa fractions are collected, when the temperature reaches 130 ℃, steam is stopped, and in order to ensure that a heat exchange tube of the reboiler is below the liquid level, the volume of the residual materials in the reboiler is controlled to be 800-1000L by first rectification. 4000L of the second feeding is carried out, the operation condition is unchanged, and the volume of the residual materials in the reboiler is controlled to be 800-1000L. 400L of the third feeding is carried out, the operation condition is unchanged, and when the temperature of the reboiler reaches 135-155 ℃, the rectification is finished. The rectification time and the output are shown in the following table:
the total feeding amount of the three batches of rectification is 12000L, the total time is reduced by 12.2 hours from 36.1 hours before improvement, and 600L of rectification residual liquid is 400L less than 1000L before improvement.
Example 2
As shown in fig. 2, fig. 3, fig. 4 and fig. 5, a novel reboiler for preventing material from polymerizing comprises a gas exchange hood 1, a gas inlet connecting pipe 2, a liquid outlet pipe 16 and a shell 6 arranged at one side of the gas exchange hood 1, and is characterized in that: the top of the ventilation hood 1 is fixedly connected with the air inlet connecting pipe 2, the bottom of the ventilation hood 1 is provided with a liquid outlet pipe 16, the right end of the ventilation hood 1 is provided with a first connecting plate 3 in a welded connection mode, the middle part of the first connecting plate 3 is welded with one end of a partition plate 15, the other end of the partition plate 15 is welded with the middle part of the inner wall of the left end of the ventilation hood 1, the partition plate 15 separates the ventilation hood 1 into a first air inlet cavity 101 and a second air inlet cavity 102, the first connecting plate 3 is fixedly connected with the second connecting plate 4 through a fastening bolt 3, the second connecting plate 4 is connected with a port welding machine of a shell 6, a first heating pipe group 7 and a second heating pipe group 9 are arranged in the shell 6, one end of the first heating pipe 7 sequentially penetrates through the second connecting plate 4 and the first connecting plate 3 to be communicated with the air inlet cavity 101, the other end of the first heating pipe 7 sequentially penetrates through the second connecting plate 4 and the first connecting plate 3 to be communicated with the air outlet cavity 102, one end of the second heating pipe 9 sequentially penetrates through the second connecting plate 4 and the first connecting plate 3 to be communicated with the air inlet cavity 101, the other end of the second heating pipe 9 sequentially penetrates through the second connecting plate 4 and the first connecting plate 3 to be communicated with the air outlet cavity 102, a gasification outlet pipe 10 is arranged at the top end of the shell 6, a liquefaction outlet pipe 19 is arranged at the bottom of the shell 6, a fixing plate 21 is arranged at the tail end of the shell 6 in a welding mode, a positive and negative motor 14 is connected with a connecting rod 12 in a rotating mode through a coupling 13, the tail end of the connecting rod 12 extends to the inside of the shell (6), a stirring rod 11 is fixedly connected in the inside of the connecting rod 12, two vertical supporting frames 8 are arranged in the inside of the shell 6 at intervals, a first heating pipe group 7 and a second heating pipe group 9 respectively penetrate through the supporting frames 8, the first heating pipe group 7 is positioned at the inner side of the second heating pipe group 9, a sealing gasket 18 is arranged between the second connecting rods 4 of the first connecting rods 3, the thickness of the stirring blades 11 gradually increases from one side to the other side, the two sides of the stirring blades 11 are fixedly connected with the stirring scraping claw 1101, the cross section of the ventilation hood 1 is rectangular, and the first connecting rods 3 and the second connecting rods 4 are symmetrically arranged about the partition plate 15. The heating pipe wall cannot form dirt through the rotation of the stirring rod 11, the collision of liquefied water on the inner wall of the heating pipe in the rotation process and the micro-vibration force of liquid in the shell on the heating pipe wall due to the movement.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a prevent novel reboiler of material polymerization, includes gas exchange hood (1), intake connection pipe (2), drain pipe (16) and sets up casing (6) of gas exchange hood (1) one side, its characterized in that: the top fixed connection of cover (1) takes over (2) admitting air of taking a breath, the bottom of cover (1) is equipped with drain pipe (16) admittedly, first connecting plate (3) are installed through welded connected mode to the right-hand member of cover (1) admittedly, the one end welding of the middle part of first connecting plate (3) and division board (15), the other end of division board (15) with the left end inner wall middle part welding of cover (1) admittedly, division board (15) separate cover (1) is chamber (101) admittedly, chamber (102) admittedly, first connecting plate (3) pass through fastening bolt (5) and second connecting plate (4) fixed connection admittedly, second connecting plate (4) with the port welding machine of casing (6), be equipped with first heating nest of tubes (7), second heating nest of tubes (9) in casing (6), the one end of first heating nest of tubes (7) run through in proper order second connecting plate (4) first connecting plate (3) with chamber (101) intercommunication, first heating nest of tubes (4) are separated by division board (1), first connecting plate (3) are the second connecting plate (4) and second connecting plate (4) run through in proper order heating nest of tubes (4) heating tube (4) in proper order, the second connecting plate (4) and the end that the one end of taking a breath (4) is followed by heating tube (4) The first connecting plate (3) is communicated with the air inlet cavity (101), the other end of the second heating tube group (9) sequentially penetrates through the second connecting plate (4), the first connecting plate (3) is communicated with the air outlet cavity (102), the top end of the shell (6) is provided with a gasification outlet tube (10), and the bottom of the shell (6) is provided with a liquefaction outlet tube (19);
the tail end of the shell (6) is provided with a fixed plate (21) in a welding mode, the top of the fixed plate (21) is connected with a positive and negative motor (14) through a bolt, the positive and negative motor (14) is rotationally connected with a connecting rod (12) through a coupler (13), the tail end of the connecting rod (12) extends to the interior of the shell ((6), and the interior of the connecting rod (12) is fixedly connected with a stirring blade (11);
two vertical supporting frames (8) are arranged in the shell (6) at intervals, and the first heating tube group (7) and the second heating tube group (9) respectively penetrate through the supporting frames (8);
the first heating tube group (7) is positioned on the inner side of the second heating tube group (9);
a sealing gasket (18) is arranged between the first connecting plate (3) and the second connecting plate (4);
the thickness of the stirring blade (11) gradually increases from one side to the other side, and two sides of the stirring blade (11) are fixedly connected with a stirring claw (1101);
the cross section of the ventilation cover (1) is rectangular, and the first connecting plate (3) and the second connecting plate (4) are symmetrically arranged relative to the partition plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436959.8A CN108325232B (en) | 2018-05-09 | 2018-05-09 | Novel reboiler for preventing material from polymerizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436959.8A CN108325232B (en) | 2018-05-09 | 2018-05-09 | Novel reboiler for preventing material from polymerizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108325232A CN108325232A (en) | 2018-07-27 |
| CN108325232B true CN108325232B (en) | 2023-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810436959.8A Active CN108325232B (en) | 2018-05-09 | 2018-05-09 | Novel reboiler for preventing material from polymerizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108325232B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330624A (en) * | 1991-12-27 | 1994-07-19 | Phillips Petroleum Company | Fractionator-reboiler sludge removal system and method |
| EP1046416A2 (en) * | 1999-04-23 | 2000-10-25 | Nippon Shokubai Co., Ltd. | Method for preventing polymerization in thin-film type evaporating device |
| CN2897370Y (en) * | 2006-04-13 | 2007-05-09 | 杨国华 | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification |
| CN202376772U (en) * | 2011-12-08 | 2012-08-15 | 江苏沿江化工资源开发研究院有限公司 | Vertical coil pipe and clamping sleeve combined reboiler |
| CN106267858A (en) * | 2016-08-30 | 2017-01-04 | 安徽安特食品股份有限公司 | A kind of Alcohol Production difficulty fouling reboiler |
| CN206746020U (en) * | 2017-03-28 | 2017-12-15 | 湖北宏嘉化工股份有限公司 | A kind of durable type reboiler of industrial production |
| CN208448684U (en) * | 2018-05-09 | 2019-02-01 | 安庆市鑫富化工有限责任公司 | One kind prevents material from polymerizeing novel reboiler |
-
2018
- 2018-05-09 CN CN201810436959.8A patent/CN108325232B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330624A (en) * | 1991-12-27 | 1994-07-19 | Phillips Petroleum Company | Fractionator-reboiler sludge removal system and method |
| EP1046416A2 (en) * | 1999-04-23 | 2000-10-25 | Nippon Shokubai Co., Ltd. | Method for preventing polymerization in thin-film type evaporating device |
| CN2897370Y (en) * | 2006-04-13 | 2007-05-09 | 杨国华 | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification |
| CN202376772U (en) * | 2011-12-08 | 2012-08-15 | 江苏沿江化工资源开发研究院有限公司 | Vertical coil pipe and clamping sleeve combined reboiler |
| CN106267858A (en) * | 2016-08-30 | 2017-01-04 | 安徽安特食品股份有限公司 | A kind of Alcohol Production difficulty fouling reboiler |
| CN206746020U (en) * | 2017-03-28 | 2017-12-15 | 湖北宏嘉化工股份有限公司 | A kind of durable type reboiler of industrial production |
| CN208448684U (en) * | 2018-05-09 | 2019-02-01 | 安庆市鑫富化工有限责任公司 | One kind prevents material from polymerizeing novel reboiler |
Non-Patent Citations (1)
| Title |
|---|
| 真空精馏高沸点热敏性物质中降膜再沸器的优化设计;金宇;曹锋州;;广州化工(15);第195-198页 * |
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| CN108325232A (en) | 2018-07-27 |
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