CN1600413A - Gas distributor in use for reactor in slurry state bed in three phases - Google Patents
Gas distributor in use for reactor in slurry state bed in three phases Download PDFInfo
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- CN1600413A CN1600413A CN 03151229 CN03151229A CN1600413A CN 1600413 A CN1600413 A CN 1600413A CN 03151229 CN03151229 CN 03151229 CN 03151229 A CN03151229 A CN 03151229A CN 1600413 A CN1600413 A CN 1600413A
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- house steward
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- 239000002002 slurry Substances 0.000 title claims description 24
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 description 7
- 230000008021 deposition Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 206010044565 Tremor Diseases 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
A gas distributor for three-phase slurry-bed reactor is composed of a pseudo-plate with the diameter same as the internal diameter of reactor, multiple gas lifting tubes, a group of gas distributing tubes, and multiple nozzles with downward open end.
Description
Technical field
The present invention relates to reactor internals field, relate in particular to a kind of gas distributor that is used for the three phase slurry bed bioreactor.
Background technology
Three-phase (gas-liquid-solid) paste state bed reactor has obtained extensive use in the industrial reaction process, for the very big catalytic reaction process of reaction heat, use three-phase bed reactor can effectively remove reaction heat, the isothermal operation of realization response device guarantees the normal operation of reactor.In the three phase slurry bed bioreactor, gas distributor is to guarantee gas equally distributed vitals in bed.At present the subject matter that exists of the gas distributor that uses be when unstripped gas is supplied with interruption or pressure instability, be prone to obstruction, the slurries adverse current enters gas inlet pipe and catalyst or other solids deposition at reactor bottom.For deposition problems, when carry out in the reactor be exothermic process the time, may cause the slurry reactor hot-spot and burn out catalyst.The solution of these problems is extremely important for the continued operation that realizes paste state bed reactor.In patent that formerly has and the report, the gas distributor that can be used for gas-liquid stereoplasm state bed reactor seldom, in order to solve blockage problem, gas distributor generally adopts float-valve type distributor pattern, this structure it is said in the time of can effectively solving owing to unstripped gas supply interruption or pressure instability, and inlet gas distribution nozzles blocking problem takes place, but this gas distributor complex structure, the manufacturing cost height has also increased the resistance of reactor.And catalyst does not propose effective solution in the deposition problems of reactor bottom yet during for gas halts.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of simple and reasonable for the defective that overcomes above-mentioned prior art existence, both guarantee gas through evenly distributing behind the gas distributor, solved or alleviated the gas distributor that is used for the three phase slurry bed bioreactor of blockage problem, reflux problem and deposition of solid problem when stream pressure shakiness or air feed interruption again effectively.
Purpose of the present invention can be achieved through the following technical solutions: a kind of gas distributor that is used for the three phase slurry bed bioreactor, this distributor is made up of a false plate, many vapor risers, a gas distribution tube group and a plurality of opening nozzle vertically downward.
Described false plate and reactor shell are processed as one, and diameter is identical with reactor inside diameter, is shaped as spheroid, and the centre has a plurality of mouths of pipe so that vapor riser to be installed; Described false plate upper surface requires smooth, be easy to be blown afloat with the catalyst of guaranteeing to deposit thereon, with the gas distribution tube group be no more than three times of single-nozzle total length apart from the farthest, can be ejected into false plate upper surface with uniform airflow with the gas of guaranteeing the nozzle ejection, and false plate lower surface and gas access house steward's distance should be not less than two times of gas access house steward's diameter; The gas access house steward is positioned at the reactor bottom end socket and slightly goes up the position of some, laterally enter reactor from the side, gas enters the gas compartment between false plate and the end socket by the downward mouth of pipe in the middle of the house steward of gas access, thereby has prevented that the slurries that gas pressure shakiness or air feed flow backwards when interrupting from entering in the gas inlet pipe immediately.
Described vapor riser is the many short tubes vertical with reactor cross section, one end passes false plate and is communicated with the gas compartment between reactor bottom end socket and the false plate, the other end is connected on the gas distribution tube group, the quantity visual response device diameter of vapor riser and deciding.
The gas distribution tube group can be taked one of following four kinds of patterns:
The gas distribution tube group of first kind of pattern is made up of the distribution of gas arm of a distribution of gas house steward and Duo Gen straight pipe type, and distribution of gas house steward and gas distribution arms are on the horizontal plane; Described distribution of gas house steward two ends are fixed on the reactor shell, and many vapor risers are communicated with the house steward bottom, and the tedge diameter is radially descended to wall of reactor by the center gradually along reactor, and is suitable with the ejection tolerance of guaranteeing each nozzle; Described distribution of gas arm is communicated with house steward and is perpendicular, two ends also are fixed on the reactor shell, the diameter of distribution of gas arm is radially constant or slightly increase to wall of reactor by the center along reactor, decide on concrete nozzle quantity and gas flow distribution, nozzle is evenly arranged on the distribution of gas arm.
The gas distribution tube group of second kind of pattern is made up of the distribution of gas arm of many straight pipe types that are in same horizontal plane, and vapor riser directly links to each other with the distribution of gas arm; Described distribution of gas arm is arranged one at each rising mouth of pipe, the diameter of distribution of gas arm is radially constant or slightly increase to wall of reactor by the center along reactor, decide on concrete nozzle quantity and gas flow distribution, and the tedge diameter is radially descended to wall of reactor by the center gradually along reactor, and is suitable with the ejection tolerance of guaranteeing each nozzle; Also comprise two supporting traverses vertical with the distribution of gas arm, this supporting traverse provides support the distribution of gas arm, and the supporting traverse upper end joins with the distribution of gas arm, and every supporting traverse and every distribution of gas arm two ends are fixed on the reactor shell; Nozzle is evenly arranged on the distribution of gas arm.
The gas distribution tube group of the third pattern is made up of the distribution of gas arm of two distribution of gas house stewards and Duo Gen concentric ring tubular type, and distribution of gas house steward and gas distribution arms are on the horizontal plane; Described distribution of gas house steward two ends are fixed on the reactor shell, two distribution of gas house steward central authorities are communicated with, be right-angled intersection, many vapor risers are communicated with the house steward bottom, the diameter of tedge diameter and gas distribution arms is radially increased to wall of reactor by the center gradually along reactor, and is suitable with the ejection tolerance of guaranteeing each nozzle; Described distribution of gas arm is the many concentric endless tubes that are communicated with house steward, evenly distributes on reactor cross section; Nozzle is evenly arranged on the distribution of gas arm.
The gas distribution tube group of the 4th kind of pattern is made up of many concentric ring tubular gas distribution arms that are in same horizontal plane, and vapor riser directly links to each other with the distribution of gas arm; Every circle distribution of gas arm links to each other with the vapor riser that four positions are the cross symmetry, and the diameter of tedge diameter and gas distribution arms is radially increased to wall of reactor by the center gradually along reactor, and is suitable with the ejection tolerance of guaranteeing each nozzle; Also comprise two orthogonal supporting traverses, this supporting traverse provides support the distribution of gas arm, and the supporting traverse upper end joins with the distribution of gas arm, and two ends are fixed on the reactor shell; Nozzle is evenly arranged on the distribution of gas arm.
The nozzle opening of described gas distributor can adopt one of following two kinds of patterns vertically downward: a kind ofly be made up of fixing adapter, shrinkage cavity pipe, protection connector, air jet pipe four parts.Wherein fixing effect of taking over is that whole nozzle is fixed on the distribution of gas arm; the effect of protection connector be reduce the shrinkage cavity pipe gas by the time concussion; the air jet pipe effect mainly is pilot gas evenly ejection downwards; shrinkage cavity Guan Ze is the core of whole nozzle; under certain operating condition, its diameter has determined by whole injection differential pressure size.
Another kind of nozzle arrangements pattern then is made up of fixing adapter, taper reducing pipe, shrinkage cavity pipe, taper increaser, protection connector and air jet pipe six parts.The angle of described taper reducing pipe and taper increaser is between 60 °～150 °, and its effect is to reduce the eddy current that forms in the air jet pipe when dwindling with sudden enlargement suddenly, makes the gas of ejection more steady.The effect of remaining part is identical with the corresponding component of preceding a kind of pattern nozzle.
The layout of described nozzle and number are decided by gas distribution tube group pattern and reactor diameter; Corresponding to certain slurry attitude bed minimum operation linear speed, after the nozzle number was determined, the nozzle shrinkage cavity pipe diameter of choosing must make gas be not less than 0.02MPa by the pressure drop of shrinkage cavity pipe, evenly distributes to guarantee air-flow.
Compared with prior art, the present invention is rational in infrastructure, has both guaranteed that gas evenly distributes through realizing behind the gas distributor, effectively solves again or has alleviated blockage problem, reflux problem and deposition of solid problem when stream pressure shakiness or air feed interrupt.
Description of drawings
Fig. 1 uses the structural representation of the gas distributor of first kind of pattern gas distribution tube group for reactor bottom;
Fig. 2 is the first kind of pattern and the arrangement of nozzles schematic diagram of gas distributor distributor pipe group;
Fig. 3 is the second kind of pattern and the arrangement of nozzles schematic diagram of gas distributor distributor pipe group;
Fig. 4 is the third pattern and the arrangement of nozzles schematic diagram of gas distributor distributor pipe group;
Fig. 5 is the 4th kind of pattern and the arrangement of nozzles schematic diagram of gas distributor distributor pipe group;
Fig. 6 is a kind of structural shape of nozzle;
Fig. 7 is the another kind of structural shape of nozzle.
The specific embodiment
Embodiment 1
What as shown in Figure 1, gas distributor used is the gas distribution tube group of first kind of pattern.Reacting gas laterally enters the gas compartment between bottom bulkhead 8 and the false plate 2 from gas access house steward 1, spray downwards from the open tube 9 of centre, arrive behind bottom bulkhead 8 bottoms again baffling upwards by being fixed on the vapor riser 3 on the false plate 2, enter distribution of gas house steward 6, enter distribution of gas arm 5 then, again by nozzle 4 ejection vertically downward of several openings, arrive false plate 2 upper surfaces after gas baffling upwards, the slurry attitude bed by reactor 7 equably.
Because the distribution of gas nozzle is under shed, effectively prevented the blockage problem of solid when tolerance reduces or lose gas.And because the false plate of supporting bottom surface is smooth, and the distance between nozzle and the false plate is very little, catalyst is difficult in bottom deposit, has kept the suspended state of catalyst in the slurry attitude bed, thereby has avoided exothermal reaction process because the overheated situation of the current situation portion that deposits of catalyst.Because the inlet gas house steward directly links to each other with tedge, tolerance reduce or during the air feed interruption slurries of suck-back also just be introduced in the end socket and can not enter the gas access house steward immediately.
Shown in Figure 2 then is the schematic diagram of the described gas distributor of this embodiment in reactor (among Fig. 1) A-A cross section.In the gas distributor tube group of first kind of pattern shown in Figure 2, distribution of gas house steward 6 links to each other with following five vapor risers 3, and distribution of gas arm 5 comprises ten straight tubes vertical with house steward, be communicated with distribution of gas house steward 6, with house steward is that axle is symmetrically arranged, spacing between the distribution of gas arm 5 is identical, and distribution of gas house steward 6 and gas distribution arms 5 two ends all are fixed on the reactor shell.Every distribution of gas arm 5 length are reduced to cylindrical shell by reactor 7 centers gradually along distribution of gas house steward 6 directions, the also corresponding minimizing of the nozzle quantity of layout.In the present embodiment, because nozzle quantity is less, the diameter of distribution of gas arm 5 is remained unchanged to cylindrical shell by reactor 7 centers along reactor 7 directions.But the diameter of vapor riser 3 is radially reduced to cylindrical shell by reactor center gradually along reactor 7.
Embodiment 2
Gas distributor tube group pattern also can adopt pattern shown in Figure 3, i.e. the gas distributor tube group of second kind of pattern.The described gas distributor tube group of this embodiment is not established the distribution of gas house steward, distribution of gas arm 5 is five parallel straight tubes that spacing is identical, be with distribution of gas arm difference shown in Figure 2, distribution arms does not need to link to each other with the house steward that distributes, be many complete straight tubes, reduced the difficulty of making processing.In order to increase the stability of gas distribution tube group, two upper surfaces and distribution of gas arm 5 bottom connection supporting traverses 10 have been used.Supporting traverse 10 is vertical with distribution of gas arm 5, provides support for distribution of gas arm 5.Every supporting traverse 10 and every distribution of gas arm 5 two ends are fixed on the cylindrical shell of reactor 7.Identical with embodiment 1, because nozzle quantity is less, the diameter of distribution of gas arm 5 is remained unchanged to cylindrical shell by reactor 7 centers along reactor 7 directions.But the diameter of vapor riser 3 is radially reduced to cylindrical shell by reactor center gradually along reactor 7.
Embodiment shown in Figure 4 adopts the gas distributor tube group of the third pattern.This gas distribution tube group comprises the annular gas distribution arms 5 that distribution of gas house steward 6 that two right-angled intersections, central authorities are communicated with and three circles and reactor are 7 concentric, diameter differs.Every distribution of gas house steward's 6 two ends are fixed on reactor 7 cylindrical shells.The distribution of gas arm 5 of ring-type all keeps being communicated with two distribution of gas house stewards 6, and every circle distribution arms is divided into four sections by distribution of gas house steward 6, and nozzle 5 along the circumferential direction evenly distributes on distribution of gas arm 5.In the embodiment shown in fig. 4, the diameter of vapor riser 3 and gas distribution arms 5 is radially increased to cylindrical shell by reactor center gradually along reactor 7.
Embodiment shown in Figure 5 adopts the gas distributor tube group of the 4th kind of pattern.Compare with embodiment 3, this embodiment does not establish the distribution of gas house steward, and distribution of gas arm 5 still is the concentric endless tubes of three circles, but because this endless tube does not need to link to each other with the gas main, is complete multi-turn endless tube, has reduced the difficulty of making processing.Use 10 pairs of distribution of gas arms of supporting traverse of the right-angled intersection of two upper surfaces and endless tube bottom connection to provide support.Identical with embodiment 3, the diameter of tedge diameter and gas distribution arms is radially increased to wall of reactor by the center gradually along reactor.
In the above-described embodiments, employed nozzle can adopt any of Fig. 6 or nozzle shown in Figure 7.
Claims (10)
1. a gas distributor that is used for the three phase slurry bed bioreactor is characterized in that, this distributor is made up of a false plate, many vapor risers, a gas distribution tube group and a plurality of opening nozzle vertically downward.
2. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that described false plate and reactor shell are processed as one, diameter is identical with reactor inside diameter, be shaped as spheroid, the centre has a plurality of mouths of pipe so that vapor riser to be installed; Described false plate upper surface requires smooth, with the gas distribution tube group be no more than three times of single-nozzle total length apart from the farthest, and false plate lower surface and gas access house steward's distance is not less than two times of gas access house steward's diameter; The gas access house steward is positioned at the reactor bottom end socket and slightly goes up the position of some, laterally enters reactor from the side, and gas enters the gas compartment between false plate and the end socket by the downward mouth of pipe in the middle of the house steward of gas access.
3. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described vapor riser is the many short tubes vertical with reactor cross section, one end passes false plate and is communicated with the gas compartment between reactor bottom end socket and the false plate, the other end is connected on the gas distribution tube group, the quantity visual response device diameter of vapor riser and deciding.
4. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described gas distribution tube group is made up of the distribution of gas arm of a distribution of gas house steward and Duo Gen straight pipe type, and distribution of gas house steward and gas distribution arms are on the horizontal plane; Described distribution of gas house steward two ends are fixed on the reactor shell, and many vapor risers are communicated with the house steward bottom, and the tedge diameter is radially descended to wall of reactor by the center gradually along reactor; Described distribution of gas arm is communicated with house steward and is perpendicular, and two ends also are fixed on the reactor shell, and radially by center constant or slightly increase to wall of reactor, nozzle is evenly arranged on the distribution of gas arm diameter of distribution of gas arm along reactor.
5. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described gas distribution tube group is made up of the distribution of gas arm of many straight pipe types that are in same horizontal plane, and vapor riser directly links to each other with the distribution of gas arm; Described distribution of gas arm is arranged one at each rising mouth of pipe, and radially by center constant or slightly increase to wall of reactor, and the tedge diameter is radially descended to wall of reactor by the center along reactor the diameter of distribution of gas arm gradually along reactor; Also comprise two supporting traverses vertical with the distribution of gas arm, this supporting traverse provides support the distribution of gas arm, and the supporting traverse upper end joins with the distribution of gas arm, and every supporting traverse and every distribution of gas arm two ends are fixed on the reactor shell; Nozzle is evenly arranged on the distribution of gas arm.
6. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described gas distribution tube group is made up of the distribution of gas arm of two distribution of gas house stewards and Duo Gen concentric ring tubular type, and distribution of gas house steward and gas distribution arms are on the horizontal plane; Described distribution of gas house steward two ends are fixed on the reactor shell, two distribution of gas house steward central authorities are communicated with, be right-angled intersection, many vapor risers are communicated with the house steward bottom, and the diameter of tedge diameter and gas distribution arms is radially increased to wall of reactor by the center gradually along reactor; Described distribution of gas arm is the many concentric endless tubes that are communicated with house steward, evenly distributes on reactor cross section; Nozzle is evenly arranged on the distribution of gas arm.
7. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described gas distribution tube group is made up of many concentric ring tubular gas distribution arms that are in same horizontal plane, and vapor riser directly links to each other with the distribution of gas arm; Every circle distribution of gas arm links to each other with the vapor riser that four positions are the cross symmetry, and the diameter of tedge diameter and gas distribution arms is radially increased to wall of reactor by the center gradually along reactor; Also comprise two orthogonal supporting traverses, this supporting traverse provides support the distribution of gas arm, and the supporting traverse upper end joins with the distribution of gas arm, and two ends are fixed on the reactor shell; Nozzle is evenly arranged on the distribution of gas arm.
8. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1 is characterized in that, described nozzle opening is made up of fixing adapter, shrinkage cavity pipe, protection connector, air jet pipe four parts vertically downward.
9. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1, it is characterized in that, described nozzle opening is made up of fixing adapter, shrinkage cavity pipe, taper reducing pipe, taper increaser, protection connector and air jet pipe six parts vertically downward; The angle of described taper increaser is between 60 °～150 °.
10. the gas distributor that is used for the three phase slurry bed bioreactor according to claim 1 is characterized in that the layout of described nozzle and number are decided by gas distribution tube group pattern and reactor diameter; Corresponding to certain slurry attitude bed minimum operation linear speed, after the nozzle number was determined, the nozzle shrinkage cavity pipe diameter of choosing must make gas be not less than 0.02MPa by the pressure drop of shrinkage cavity pipe, evenly distributes to guarantee air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151229 CN1233454C (en) | 2003-09-28 | 2003-09-28 | Gas distributor in use for reactor in slurry state bed in three phases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151229 CN1233454C (en) | 2003-09-28 | 2003-09-28 | Gas distributor in use for reactor in slurry state bed in three phases |
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| Publication Number | Publication Date |
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| CN1600413A true CN1600413A (en) | 2005-03-30 |
| CN1233454C CN1233454C (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03151229 Expired - Lifetime CN1233454C (en) | 2003-09-28 | 2003-09-28 | Gas distributor in use for reactor in slurry state bed in three phases |
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| CN1233454C (en) | 2005-12-28 |
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Application publication date: 20050330 Assignee: SHAANXI FUTURE ENERGY CHEMICAL CO.,LTD. Assignor: Shanghai Yankuang Energy Sources Technology Research & Development Co.,Ltd. Contract record no.: 2012310000147 Denomination of invention: Gas distributor in use for reactor in slurry state bed in three phases Granted publication date: 20051228 License type: Common License Record date: 20120813 |
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Application publication date: 20050330 Assignee: Sichuan Yilong masukuni Energy Co.,Ltd. Assignor: Shanghai Yankuang Energy Sources Technology Research & Development Co.,Ltd. Contract record no.: 2014310000012 Denomination of invention: Gas distributor in use for reactor in slurry state bed in three phases Granted publication date: 20051228 License type: Common License Record date: 20140121 |
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Inventor after: Sun Qiwen Inventor after: Zhu Jicheng Inventor after: Han Hui Inventor after: Pang Lifeng Inventor before: Zhu Jicheng Inventor before: Han Hui Inventor before: Pang Lifeng |
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Free format text: CORRECT: INVENTOR; FROM: ZHU JICHENG HAN HUI PANG LIFENG TO: SUN QIWEN ZHU JICHENG HAN HUI PANG LIFENG |
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