CN201632085U - Flowing-baffling composite gasoline fractionator for ethylene unit - Google Patents
Flowing-baffling composite gasoline fractionator for ethylene unit Download PDFInfo
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- CN201632085U CN201632085U CN2010201458599U CN201020145859U CN201632085U CN 201632085 U CN201632085 U CN 201632085U CN 2010201458599 U CN2010201458599 U CN 2010201458599U CN 201020145859 U CN201020145859 U CN 201020145859U CN 201632085 U CN201632085 U CN 201632085U
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Abstract
The utility model discloses a flowing-baffling composite gasoline fractionator for an ethylene unit. A quenching oil circulation section is provided with micro baffle plates arranged up and down in parallel at intervals, and an angle range of the vertex angle of the micro baffle plate is between 90 and 139 degrees. Symmetrical vertical folding sides are arranged on symmetrical sloping sides of two sides of the vertex angle of the micro baffle plate. Flowing sieve plates which are arranged up and down and have sieve pore diameter range phi between 18 and 24mm are arranged on a medium oil circulation section. A diesel oil separation section is provided with flowing sieve plates which are arranged up and down and have sieve pore diameter range phi between 13 and 24mm; and a gasoline separation section is provided with flowing sieve plates which are arranged up and down and have sieve pore diameter range phi between 13 and 18mm. The gasoline fractionator overcomes the problem of polymer blockage frequently occurring in the conventional plate fractionating column, and has the outstanding advantages of strong impact and vibration resistance, full-tower pressure reduction, high ethylene yield, obvious energy-saving effect and the capacity of ensuring long-term stable operation of the tower.
Description
Technical field
The present utility model belongs to chemical separating equipment, particularly relates to a kind of percolation-baffling compound type gasoline splitter of ethylene unit.
Background technology
Gasoline splitter is the leading equipment of ethylene unit, and it is the significant embodiment that has of chemical separation technology level height.
Existing board-like gasoline splitter is by the quench oil circulation section, middle matter oil circulation section, diesel oil segregation section and gasoline segregation section are formed, the quench oil circulation section is by the nozzle-type liquid distribution trough, three-dimensional composite flow guide formula air inlet initial distribution device and large-scale deflection plate or angle steel tower tray or mesopore ripple percolation sieve plate (φ 12mm, constitute down together), middle matter oil circulation section is by the nozzle-type liquid distribution trough, high internal circulating load oil sump tank and Glitsch V-O tray or angle steel tower tray or mesopore ripple percolation sieve plate constitute, diesel oil segregation section is made of Glitsch V-O tray or mesopore ripple percolation sieve plate, and gasoline segregation section is made of nozzle-type liquid distribution trough and Glitsch V-O tray or mesopore ripple percolation sieve plate.
There is a following global main difficult problem in present board-like gasoline splitter: diesel oil segregation section just is in polymeric area, and polymer often stops up liquid distribution trough or tower tray; The carbonizing matter that the cracking of quench oil circulation section produces often stops up heat exchanger, liquid distribution trough or the tower tray in the heat transfer process.
Be beneficial to long-term operation for fear of above-mentioned obstruction, technological measures such as polymerization inhibitor, antioxidant are added in many both at home and abroad employings, though effective expensive bigger, and the domestic repeatedly obstruction accident that still takes place.
Summary of the invention
The purpose of this utility model is to disclose a kind of percolation-baffling compound type gasoline splitter of ethylene unit, and this gasoline splitter has the outstanding feature that resists stifled, energy-conservation and synergy.
The utility model is taked following technical scheme for achieving the above object: the gasoline splitter of this ethylene unit comprises tower body and the mouth of pipe and instrument, functional section in the tower body is the quench oil circulation section, middle matter oil circulation section, diesel oil segregation section and gasoline segregation section, wherein the quench oil circulation section comprises nozzle-type liquid distribution trough and three-dimensional composite flow guide formula air inlet initial distribution device, middle matter oil circulation section comprises nozzle-type liquid distribution trough and high internal circulating load oil sump tank, gasoline segregation section comprises the nozzle-type liquid distribution trough, feature is, be provided with between the nozzle-type liquid distribution trough of described quench oil circulation section and the three-dimensional composite flow guide formula air inlet initial distribution device and be arranged in parallel up and down and miniature deflection plate alternately, the angular range of described miniature deflection plate drift angle is 90-139 °, deflection plate drift angle bilateral symmetry hypotenuse is provided with the symmetrical vertical flanging, symmetry hypotenuse length range is 80-200mm, and vertical flanging length range is 10-40mm; Be provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 18-24mm between matter oil circulation section nozzle-type liquid distribution trough and the high internal circulating load oil sump tank in described; Described diesel oil segregation section is provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 13-24mm; The below of described gasoline segregation section nozzle-type liquid distribution trough is provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 13-18mm.
The utility model can also be taked following technical measures:
The free cross-section rate that described miniature deflection plate is uniformly-spaced laid is 50 ± 5%, and the interlamellar spacing scope is 300-600mm.
Described quench oil circulation section be arranged in parallel up and down and miniature deflection plate alternately is the 10-16 layer.
Described miniature deflection plate is supported by space net rack, described space net rack is provided with foundation beam, the foundation beam spaced surface is distributed with column, between each column and between each column of periphery and tower body layering and horizontal support have X to crossbeam and Y to crossbeam, described each layer Y is to the crossbeam miniature deflection plate of horizontal support respectively.
The percent opening of described percolation sieve plate is 15-30%.
The percolation sieve plate of the matter oil circulation section 8-10 layer that is arranged above and below in described.
The percolation sieve plate of the described diesel oil segregation section 3-5 layer that is arranged above and below.
The percolation sieve plate of the described gasoline segregation section 7-10 layer that is arranged above and below.
The described percolation sieve plate that is arranged above and below is supported by the girder truss of a corbel polydisc, and girder truss is arranged side by side is provided with and the parallel middle parallel chords of parallel chords up and down each parallel chords position, centre symmetry arranged side by side up and down between the parallel chords; Described upper and lower parallel chords and middle parallel chords are by symmetrical shaped steel and connect and constitute, and gripped the rectangle boom plate between the shaped steel that connects respectively, each rectangle boom plate both sides is welded with vertical rod and brace respectively, and upper and lower parallel chords arranged side by side and middle parallel chords be horizontal support percolation sieve plate respectively.
The beneficial effects of the utility model and advantage are: the gasoline splitter of this ethylene unit is provided with miniature deflection plate at its quench oil circulation section, adopting sieve diameter respectively at middle matter oil circulation section, diesel oil segregation section and gasoline segregation section is the mesopore ripple percolation sieve plate of φ 12mm greater than existing corresponding function section sieve diameter, makes this gasoline splitter embody following outstanding effect:
1. make full use of percolation sieve plate known " self-cleaning " function, and overcome the normal polymer plugging phenomenon that takes place of position, place, particularly diesel oil segregation section." self-cleaning " function of percolation sieve plate is mainly reflected in, and 1. the tower tray of percolation sieve plate formation is a gas-liquid counter current, and the solid in the liquid is mixed equably in the impact stirring of gas-liquid and lifting can not produce the clogging that precipitum causes with the lifting of liquid stream.2. the liquid on the percolation sieve tray only axially moves, and does not have gas liquid cross-flow, does not more have the stagnant area, does not also have the dead angle, and the alluvial that therefore can not produce solid is stopped up.3. the screen-aperture scope of the present invention's selection is respectively φ 13-18mm (mesopore) or φ 18-24mm (macropore), and it is φ 12mm ripple percolation sieve plate that its anti-blockage capability is better than existing aperture commonly used.4. because percolation sieve plate screening area of the present invention is bigger, the solids under the gas shock effect in the liquid is difficult to form the bridge formation clogging at sieve aperture, and its anti-blockage capability is better than existing float valve or standing valve structure commonly used.
2. make the pressure of gasoline splitter fall lower, with float valve or Glitsch V-O tray mutually specific pressure reduce by 50% approximately, φ 12600 gasoline splitters of introducing as certain 1,000,000 tons of ethylene unit adopt standing valve percolation sieve plate scheme, about 20KPa falls in full pressure tower, and the present invention of same specification tests the full pressure tower of tower and falls less than 10KPa.By general knowledge known in this field is that pressure falls every reduction 1KPa with energy-conservation 150Kw/ hour, yield of ethene increase by 0.1% estimation, and experiment tower energy-conservation 1500Kw/ hour, yield of ethene increase by 1% and be 10,000 tons.
3. fall function owing to have pouring in the space of macropore percolation sieve plate spacing, therefore total mass-and heat-transfer efficient is better than the overflow type tower tray.Actual test shows, the present invention tests about 8～10 ℃ of the temperature drop of every macropore percolation sieve plate of tower diesel oil segregation section, is enough to illustrate that gasoline splitter mass-and heat-transfer efficient of the present invention is good.
The miniature deflection plate that the utility model adopts at the quench oil circulation section is the product of existing large and medium-sized (for miniature deflection plate) deflection plate and the optimum organization of angle steel tower tray, miniature deflection plate is strong in the anti-stifled ability of the large and medium-sized deflection plate of maintenance, pressure falls outside the lower characteristics, and its direct heat transfer and indirect heat transfer efficient are apparently higher than big-and-middle-sized deflection plate.The usage quantity that at first is every layer of miniature deflection plate is several times of big-and-middle-sized deflection plate, so the number of times that miniature deflection plate gas-liquid directly contacts also is several times of big-and-middle-sized deflection plate; Be that miniature deflection plate drift angle dual-side is provided with vertical flanging in addition, this flanging is not only the rigidity that has improved miniature deflection plate, and has guide functions.
In addition, percolation sieve plate of the present utility model is supported by the girder truss of a corbel polydisc, the girder truss of this truss Liangqi ratio of rigidity routine is much bigger, can not only realize the purpose of a beam support multilayer tower tray, also can guarantee the specification requirement of major diameter tower tray levelness≤3mm, also can satisfy of the designing requirement of the girder height of each layer tower tray less than 30% distance between plates.The experiment proved that this girder truss does not produce interference for the liquid on the tower tray, also do not influence the uniform of gas, help improving plate efficiency.Experiment proves that also the anti shock and vibration ability of this girder truss is also very strong.Compare the overall cost that this girder truss can obviously reduce tower with existing multilayer tray structure.
Miniature deflection plate of the present utility model is supported by space net rack, can not only realize supporting the purpose of the miniature deflection plate of multilayer, and has an anti-strong outstanding advantage of impact capacity that becomes gas load at a high speed, can effectively avoid miniature deflection plate to impact the resonance that takes place because of becoming gas load at a high speed, thereby the long-period stable operation that helps tower also has manufacturing, installation difficulty is little and cost is low characteristics simultaneously.
In a word, gasoline splitter of the present utility model can obviously improve the technical indicator of its long-period stable operation, and energy efficiency is remarkable.
Description of drawings
Accompanying drawing 1 is a gasoline splitter example structure generalized section.
Accompanying drawing 2 is miniature deflection plate cross sectional representation.
Accompanying drawing 3 is that Fig. 2 A is to view.
Accompanying drawing 4 is that miniature deflection plate is laid view.
Accompanying drawing 5 is Fig. 1 space net rack partial structurtes schematic diagrames.
Accompanying drawing 6 is that Fig. 5 A is to view.
Accompanying drawing 8 is Fig. 7 A-A section zoomed-in views.
Number in the figure: 1 tower body, 2 bearings, 3 foundation beams, 4 space net racks, 4-1 bearing, 4-2 space net rack foundation beam, the 4-3 column, the 4-4 supporting seat, 4-5X is to crossbeam, 4-6Y is to crossbeam, 5 miniature deflection plates, 6 nozzle-type liquid distribution troughs, 7 high internal circulating load oil sump tanks, 8 girder trusses, 8-1 bearing, parallel chords under the 8-2,8-3 rectangle boom plate, 8-4 intermediate rectangular boom plate, the last parallel chords of 8-5, parallel chords in the middle of the 8-6,8-7 brace, 8-8 vertical rod, 8-9 spacing bar, the 8-10 connecting plate, 9 percolation sieve plates, 10 three-dimensional composite flow guide formula air inlet initial distribution devices.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is described in detail.
As shown in Figure 1, the gasoline splitter embodiment of this ethylene unit comprises tower body 1 and the mouth of pipe and instrument (not shown), and the functional section in the tower body is quench oil circulation section A, middle matter oil circulation section B, diesel oil segregation section C and gasoline segregation section D from bottom to up successively.
Be provided with the miniature deflection plate 5 of 10-16 layer between the nozzle-type liquid distribution trough 6 of quench oil circulation section A and the three-dimensional composite flow guide formula air inlet initial distribution device 10, miniature in the embodiment shown in fig. 1 deflection plate 5 is provided with 15 layers, and support by space net rack 4, below narrate the structure of miniature deflection plate 5 and space net rack 4 respectively.
Shown in Fig. 2,3, the drift angle angular extensions alpha of the miniature deflection plate 5 of quench oil circulation section A is 90-139 °, the tail end of drift angle bilateral symmetry hypotenuse is provided with the vertical flanging 5-1 of symmetry, and symmetrical hypotenuse length range T1 is 80-200mm, and the altitude range T2 of the vertical flanging 5-1 of symmetry is 10-40mm.
As shown in Figure 4, the miniature deflection plate 5 of the basis under the user mode be arranged in parallel up and down and alternate uniformly-spaced arrangement, and is supported in the brace summer of space net rack 4, and the free cross-section rate that miniature deflection plate is uniformly-spaced laid is 50 ± 5%, and interlamellar spacing scope T3 is 300-600mm.
The space grid structure that supports miniature deflection plate among Fig. 1 embodiment is shown in Fig. 5,6, and described space net rack is provided with the space net rack foundation beam 4-2 that is supported by bearing 4-1, and the space net rack foundation beam can be grid beam of the prior art, arch bridge beam or grid beam.Space net rack foundation beam spaced surface is distributed with the column 4-3 that is made of square tube, between each column and between each column of periphery and tower body 1 layering and horizontal support have X to crossbeam 4-5 and Y to crossbeam 4-6, X is fixedlyed connected with the supporting seat 4-4 that corresponding column or tower body 1 are provided with to the crossbeam two ends with Y to crossbeam 4-5.
The Y of the space net rack shown in Fig. 5,6 is to 8 layers and 7 layers miniature deflection plate 5 of crossbeam difference horizontal support.
The sieve diameter scope that the 8-10 layer that is arranged above and below is set between the nozzle-type liquid distribution trough 6 of matter oil circulation section B and the high internal circulating load oil sump tank 7 in of the present utility model is the percolation sieve plate of φ 18-24mm, the percolation sieve plate is provided with 8 layers in the embodiment shown in fig. 1, and sieve diameter is φ 22mm.
The percolation sieve plate 9 of Fig. 1 embodiment is supported by the girder truss 8 of a corbel four dishes, and its structure is shown in Fig. 7,8.
Among Fig. 7,8, girder truss comprise and list parallel chords 8-5, side by side descend parallel chords 8-2 (two row only are shown among the figure), vertical rod 8-8 and brace 8-7, be arranged at and list between the parallel chords respectively and make it the connecting plate 8-10 that connects and limit the spacing bar 8-9 of spacing and be respectively applied for upper and lower parallel chords body between the following parallel chords.
Girder truss of the present utility model arranged side by side be respectively equipped with between the parallel chords up and down two with the parallel middle parallel chords 8-6 of parallel chords up and down, the middle parallel chords 8-6 position symmetry that girder truss is arranged side by side.
Among Fig. 7,8, last parallel chords 8-5, down parallel chords 8-2 is by symmetrical channel-section steel and connects and constitute, and gripped rectangle boom plate 8-3 between the symmetrical channel-section steel, described fixedly is to weld.Middle parallel chords 8-6 is by symmetrical angle steel and connects and constitute that gripped intermediate rectangular boom plate 8-4 between the symmetrical angle steel, described fixedly is to weld.In addition, parallel chords 8-6 also is provided with the connecting plate 10 that is used for the body connection in the middle of each.
Parallel chords up and down that this girder truss is arranged side by side and middle parallel chords can 4 layers of percolation sieve plates of horizontal support, and therefore, Fig. 1 embodiment is provided with two these girder trusses of cover, supports 8 layers of percolation sieve plate altogether.
The bottom of a corbel four dish girder trusses shown in Fig. 7,8 is provided with bearing 8-1 (omitting among Fig. 1) respectively.
Diesel oil segregation section C of the present utility model is provided with the 3-5 layer that is arranged above and below, the sieve diameter scope is the percolation sieve plate of φ 13-24mm, and percolation sieve plate 9 has been arranged above and below 4 layers in the embodiment shown in fig. 1, and sieve diameter is φ 24mm.Percolation sieve plate 9 is supported by the girder truss 8 of a corbel four dishes.
Gasoline segregation section D of the present utility model is provided with the 7-10 layer that is arranged above and below below nozzle-type liquid distribution trough 6, the sieve diameter scope is the percolation sieve plate of φ 13-18mm, percolation sieve plate 9 has been arranged above and below 8 layers in the embodiment shown in fig. 1, and sieve diameter is φ 14mm.Percolation sieve plate 9 is supported by the girder truss 8 of two covers, one corbel, four dishes.
In the embodiment shown in fig. 1, percolation sieve plate 9 percent openings of middle matter oil circulation section B, diesel oil segregation section C and gasoline segregation section D are respectively 20%, 18% and 18%.
Claims (9)
1. the percolation of an ethylene unit-baffling compound type gasoline splitter, comprise the tower body and the mouth of pipe thereof and instrument, functional section in the tower body is the quench oil circulation section, middle matter oil circulation section, diesel oil segregation section and gasoline segregation section, wherein the quench oil circulation section comprises nozzle-type liquid distribution trough and three-dimensional composite flow guide formula air inlet initial distribution device, middle matter oil circulation section comprises nozzle-type liquid distribution trough and high internal circulating load oil sump tank, gasoline segregation section comprises the nozzle-type liquid distribution trough, it is characterized in that: be provided with between the nozzle-type liquid distribution trough of described quench oil circulation section and the three-dimensional composite flow guide formula air inlet initial distribution device and be arranged in parallel up and down and miniature deflection plate alternately, the angular range of described miniature deflection plate drift angle is 90-139 °, deflection plate drift angle bilateral symmetry hypotenuse is provided with the symmetrical vertical flanging, symmetry hypotenuse length range is 80-200mm, and vertical flanging length range is 10-40mm; Be provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 18-24mm between matter oil circulation section nozzle-type liquid distribution trough and the high internal circulating load oil sump tank in described; Described diesel oil segregation section is provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 13-24mm; The below of described gasoline segregation section nozzle-type liquid distribution trough is provided with the percolation sieve plate that the sieve diameter scope that is arranged above and below is φ 13-18mm.
2. gasoline splitter according to claim 1 is characterized in that: the free cross-section rate that described miniature deflection plate is uniformly-spaced laid is 50 ± 5%, and the interlamellar spacing scope is 300-600mm.
3. gasoline splitter according to claim 1 is characterized in that: described quench oil circulation section be arranged in parallel up and down and miniature deflection plate alternately is the 10-16 layer.
4. gasoline splitter according to claim 1, it is characterized in that: described miniature deflection plate is supported by space net rack, described space net rack is provided with foundation beam, the foundation beam spaced surface is distributed with column, between each column and between each column of periphery and tower body layering and horizontal support have X to crossbeam and Y to crossbeam, described each layer Y is to the crossbeam miniature deflection plate of horizontal support respectively.
5. gasoline splitter according to claim 1 is characterized in that: the percent opening of described percolation sieve plate is 15-30%.
6. gasoline splitter according to claim 1 is characterized in that: the percolation sieve plate of the matter oil circulation section 8-10 layer that is arranged above and below in described.
7. gasoline splitter according to claim 1 is characterized in that: the percolation sieve plate of the described diesel oil segregation section 3-5 layer that is arranged above and below.
8. gasoline splitter according to claim 1 is characterized in that: the percolation sieve plate of the described gasoline segregation section 7-10 layer that is arranged above and below.
9. gasoline splitter according to claim 1, it is characterized in that: the described percolation sieve plate that is arranged above and below is supported by a corbel polydisc girder truss, girder truss is arranged side by side is provided with and the parallel middle parallel chords of parallel chords up and down parallel chords position symmetry in the middle of arranged side by side each up and down between the parallel chords; Described upper and lower parallel chords and middle parallel chords are by symmetrical shaped steel and connect and constitute, and gripped the rectangle boom plate between the shaped steel that connects respectively, each rectangle boom plate both sides is welded with vertical rod and brace respectively, and upper and lower parallel chords arranged side by side and middle parallel chords be horizontal support percolation sieve plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201458599U CN201632085U (en) | 2010-03-31 | 2010-03-31 | Flowing-baffling composite gasoline fractionator for ethylene unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201458599U CN201632085U (en) | 2010-03-31 | 2010-03-31 | Flowing-baffling composite gasoline fractionator for ethylene unit |
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| Publication Number | Publication Date |
|---|---|
| CN201632085U true CN201632085U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201458599U Expired - Fee Related CN201632085U (en) | 2010-03-31 | 2010-03-31 | Flowing-baffling composite gasoline fractionator for ethylene unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785931A (en) * | 2010-03-31 | 2010-07-28 | 天津天大天久科技股份有限公司 | Flow crossing-baffling composite gasoline fractionating tower of ethylene device |
-
2010
- 2010-03-31 CN CN2010201458599U patent/CN201632085U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785931A (en) * | 2010-03-31 | 2010-07-28 | 天津天大天久科技股份有限公司 | Flow crossing-baffling composite gasoline fractionating tower of ethylene device |
| WO2011120356A1 (en) * | 2010-03-31 | 2011-10-06 | 天津天大天久科技股份有限公司 | Cross-flow and baffled-flow composite gasoline fractionator of ethylene production equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Ruwen Inventor after: Yu Jian Inventor after: Gao Zhan Inventor after: Gao Yunzhong Inventor before: Zhao Ruwen Inventor before: Yu Jian Inventor before: Gao Zhan Inventor before: Gao Yunzhong |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20180331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |