CN205127902U - Atomizing nozzle , gaseous phase fluidized bed reactor and polyolefin apparatus for producing - Google Patents
Atomizing nozzle , gaseous phase fluidized bed reactor and polyolefin apparatus for producing Download PDFInfo
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- CN205127902U CN205127902U CN201520652254.1U CN201520652254U CN205127902U CN 205127902 U CN205127902 U CN 205127902U CN 201520652254 U CN201520652254 U CN 201520652254U CN 205127902 U CN205127902 U CN 205127902U
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Abstract
The utility model relates to an atomizing nozzle of thick liquid or the feeding of liquid catalyst to and include atomizing nozzle's gaseous phase fluidized bed reactor and polyolefin apparatus for producing. This atomizing nozzle includes the nozzle main part, lies in the pan feeding mouth and the discharge gate at nozzle main part both ends respectively, forms the cavity that lets in material mouthful and discharge gate in a row in the nozzle main part, and the inner wall of cavity is smooth, and the cavity is close to the transversal wide mouth loudspeaker outwards of personally submitting of discharge gate one side and describes. The utility model discloses make thick liquid or liquid catalyst fully atomize in gaseous phase fluidized bed reactor, the dispersion is even, has reached stable control polymerization's purpose.
Description
Technical field
The utility model relates to a kind of atomizer for slurries or liquid catalyst charging, and includes gas-phase fluidized-bed reactor and the manufacture of polyolefins device of atomizer.
Background technology
Alkene homopolymerization in gas phase and the method for copolymerization are well known in the art.Such as gaseous monomer can be introduced in the catalyst and polyolefinic stirring or fluid bed comprising polymerization and implement described method.
In the fluidized-bed reactor polymerization of alkene, polymerization is carried out in a fluidized bed reactor, and bed of polymer particles keeps fluidized state by means of the gas stream containing vapor reaction monomer risen.This polymerization generally uses when starting and is similar to the prefabricated bed of polymer particles of polymer of institute for manufacture.In the course of the polymerization process, produce new polymer by the catalytic polymerization of monomer, and take out polymerizate to keep bed substantially constant.Method favourable in industrial production uses distribution grid to distribute and enters a fluidizing gas for bed, and is used as the support of bed when air feed stops.Manufactured polymer generally discharges reactor via the delivery pipe be configured near reactor lower part, fluid bed.Fluid bed comprises the bed of polymer particles of growth.This bed by fluidizing gas from reactor bottom upwards continuous-flow keep fluidized state.
Gas phase ethene polymerization slurries or liquid catalyst are a kind ofly dispersed in suspension in viscous liquid or solution state catalyst, and solids content is about 20%, and the particle diameter of solids is less than 50 microns.Compared with the solid catalyst of silica gel load, slurry catalyst has the advantages such as activity is high, cost is low, polymerizate quality is good, has greatly the trend replacing conventional solid catalyst.
Polymerization technique requires slurries or liquid catalyst continous-stable, accurately controls its flow and add in polymer reactor with mist, otherwise polymerisation will be caused unstable, causes product quality to fluctuate or reactor sheeting or caking.
The slurries provided in Chinese patent 02269754.3 or liquid catalyst feeding device, comprising there being atomizer, this atomizer radial direction arranges nitrogen inlet, axially catalyst inlet is set, nitrogen inlet is (2 ~ 4) with the diameter ratio of catalyst inlet: 1, by regulating the discharge pressure of nitrogen, the atomization that can realize different pressures reactor catalyst is added, but this atomizer body interior is venturi shape, be arranged at reactor outside, easily cause the deposition of slurry catalyst, pipeline blocks, and does not reach desirable atomizing effect.
Utility model content
The purpose of this utility model is to provide a kind of slurries or liquid catalyst atomizing feed nozzle and application apparatus thereof, and for making slurries or liquid catalyst fully be atomized in gas-phase fluidized-bed reactor, be uniformly dispersed, polymerisation can stability contorting.
To achieve these goals, the utility model provides a kind of atomizer, for gas-phase fluidized-bed reactor inside, comprise nozzle body, lay respectively at feeding mouth and the discharging opening at nozzle body two ends, the cavity that one is communicated with feeding mouth and discharging opening is formed in described nozzle body, the inner wall smooth of described cavity, the cross section of described cavity near discharging opening side is wide mouth outwardly horn-like.
Described discharging opening is an opening along the axis tangent plane of 30 ~ 60 ° obliquely of nozzle body.
Described discharging opening is an opening along the axis tangent plane of 45 ° obliquely of nozzle body.
On inwall in the middle part of described cavity, at least side is provided with corrugated projection.
On inwall in the middle part of described cavity, both sides are equipped with corrugated projection, and the projection on described each projection and opposite is symmetrical or interlaced.
The cross section of described projection is semicircle or half elliptic.
The material of described atomizer is stainless steel, alloy or pottery.
To achieve these goals, the utility model also provides a kind of gas-phase fluidized-bed reactor, and this reactor comprises the atomizer as described in any one of claim 1-8, and the discharging opening of described atomizer stretches into the inside of gas-phase fluidized-bed reactor.
To achieve these goals, the utility model also provides a kind of gas fluidized-bed process manufacture of polyolefins device, this process units comprises a gas-phase fluidized-bed reactor, this reactor comprises the atomizer as described in any one of claim 1-8, the feeding mouth of described atomizer is removably connected with the port of export of the catalyst injection pipe of process units, described in removably connect mode for being threaded, cutting ferrule connect or buckle connect.
Compared with prior art, the utility model Advantageous Effects is:
Atomizer provided by the utility model, enhancing liquid or slurry catalyst enter the atomizing effect of reactor, the porch entering reactor at liquid or slurry catalyst is avoided to form catalyst buildup, so that blocking, slurries or liquid catalyst are fully atomized in gas-phase fluidized-bed reactor, be uniformly dispersed, polymerisation can stability contorting.
Gas-phase fluidized-bed reactor provided by the utility model, can ensure that slurries or liquid catalyst are in the steadily long-acting operation of this reactor, avoid blocking the serious consequences such as the too high and implode of the reactor local temperature caused because being atomized uneven, catalyst inlet, damage is caused to equipment.
Gas fluidized-bed process manufacture of polyolefins device provided by the utility model, can ensure that slurries or liquid catalyst are in the steadily long-acting operation of this device, can save a large amount of human and material resources resource, for process units maximizing the benefits provides safeguard.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the utility model embodiment 1 atomizer;
Fig. 2 is the structural representation of the utility model embodiment 2 atomizer;
Fig. 3 is the structural representation of the utility model embodiment 3 atomizer;
Fig. 4 is the structural representation of the utility model embodiment 4 atomizer;
Fig. 5 is the structural representation of the utility model gas fluidized-bed process manufacture of polyolefins device;
In figure: 1. feeding mouth, 2. discharging opening, 3. nozzle body, 4. cavity, 5. protruding, 6. gas flowmeter, 7. catalyst batch tank, 8. volume-displacement, 9. delivery pump, 10. counterbalance valve, 11. catalyst injection pipe; 12. gas-phase fluidized-bed reactors; 13. gas pressure reducers.
Detailed description of the invention
By the following examples the utility model is described in further detail, but these embodiments should not thought to restriction of the present utility model.
Embodiment 1
Shown in Fig. 1 and Fig. 5, the atomizer that the utility model provides, for the charging of gas-phase fluidized-bed reactor inside slurries or liquid catalyst, atomizer comprises nozzle body 3, lay respectively at feeding mouth 1 and the discharging opening 2 at nozzle body 3 two ends, the cavity 4 that one is communicated with feeding mouth and discharging opening is formed in nozzle body 3, the inwall of cavity 4 near feeding mouth 1 side is straight smooth, the side of the inwall in the middle part of cavity is provided with corrugated protruding 5, the cross section of protruding 5 is semicircle or half elliptic, the cross section of cavity 4 near discharging opening 2 side is wide mouth outwardly horn-like.
Described feeding mouth 1 is removably connected with the port of export of catalyst injection pipe 11, and the mode of removably connecting is that cutting ferrule connects, and for the ease of installing, cutting ferrule coupling part is in the outside of gas-phase fluidized-bed reactor 12.Discharging opening 2 is an opening along the axis tangent plane of 45 ° obliquely of nozzle body, and discharging opening 2 stretches into the inside of gas-phase fluidized-bed reactor, make to enter the slurries of gas-phase fluidized-bed reactor 12 or liquid catalyst head-on to contact with air-flow vertically upward in gas-phase fluidized-bed reactor 12, strengthen atomizing effect.
The material of this atomizer is stainless steel, can bear certain pressure, and non-friable.
The utility model additionally provides a kind of gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The utility model also provides a kind of gas fluidized-bed process manufacture of polyolefins device, and this process units comprises a gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The catalyst preparation tank 7 of this process units is the GB150-1998 of a sealing, and this pressure vessel has the oblique paddle stirrer of three leaves in establishing, its outer wall is furnished with electric with worm line, and is provided with heat-insulation layer.During production, speed of agitator controls at 170 revs/min, and the temperature of electric with worm line controls at 60 DEG C, and be the positive pressure of nitrogen atmosphere of 0.4 ~ 0.6MPa in catalyst preparation tank 7, slurry catalyst compound concentration is 10 ~ 100g/L.
Catalyst preparation tank 7, from bottom discharge, through volume-displacement 8 to delivery pump 9, is transported to slurries or liquid catalyst counterbalance valve 10 place that setting value is 2.1MPa, meanwhile, gas flowmeter 6 by the high pressure nitrogen through gas pressure reducer 13 with 10Nm
3the flow of/h is sent into slurries or liquid catalyst in the nozzle body 3 of atomizer by catalyst injection pipe 11.
Require that atomizer is inserted gas-phase fluidized-bed reactor 12 according to polymerization technique inner, the feeding mouth 1 of atomizer is connected with the outlet of catalyst injection pipe 11, connected mode is for removably connecting, select to be threaded herein, the discharging opening 2 of atomizer stretches in gas-phase fluidized-bed reactor 4, slurries or liquid catalyst pass through catalyst injection pipe 11 under the conveying of high pressure nitrogen, and carry out gas-liquid mixed in catalyst injection pipe 11 after, enter the nozzle body 3 of atomizer, and carry out abundant gas-liquid mixed in cavity 4 after, because the pressure of gas-liquid mixture is higher than gas-phase fluidized-bed reactor 12, sprayed by the discharging opening 2 of atomizer, fully be atomized in gas-phase fluidized-bed reactor 12, be uniformly dispersed, reach the object of stability contorting polymerisation.
Embodiment 2
Shown in Fig. 2 and Fig. 5, the atomizer that the utility model provides, for the charging of gas-phase fluidized-bed reactor inside slurries or liquid catalyst, atomizer comprises nozzle body 3, lay respectively at feeding mouth 1 and the discharging opening 2 at nozzle body 3 two ends, the cavity 4 that one is communicated with feeding mouth and discharging opening is formed in nozzle body 3, the inwall of cavity 4 near feeding mouth 1 side is straight smooth, the both sides of the inwall in the middle part of cavity are equipped with corrugated protruding 5, each protruding 5 is symmetrical with the projection on opposite, the cross section of protruding 5 is semicircle or half elliptic, the cross section of cavity 4 near discharging opening 2 side is wide mouth outwardly horn-like.The shape of discharging opening can strengthen atomizing effect, prevent catalyst salty long-pending at spray nozzle front end, and atomizer tube wall has certain thickness, guarantees to form bell mouth shape simultaneously.
Described feeding mouth 1 is removably connected with the port of export of catalyst injection pipe, is convenient to change cleaning, and the mode that removably connects is for being threaded.Discharging opening 2 stretches into the inside of gas-phase fluidized-bed reactor.
The material of this atomizer is alloy, can bear certain pressure, and non-friable.
On cavity inner wall corrugated protruding 5, slurries or liquid catalyst and supplying nitrogen fully being mixed, being formed when entering gas-phase fluidized-bed reactor 4 vaporific.Further, cavity inner wall is through repeatedly grinding and polishing, to ensure inwall smooth enough, can avoid blocking.Projection is hemispherical or semielliptical shape, has prevented sediment pile, has resulted in blockage.
The utility model additionally provides a kind of gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The utility model also provides a kind of gas fluidized-bed process manufacture of polyolefins device, and shown in Figure 5, this process units comprises a gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The catalyst preparation tank 7 of this process units is the GB150-1998 of a sealing, and this pressure vessel has the oblique paddle stirrer of three leaves in establishing, its outer wall is furnished with electric with worm line, and is provided with heat-insulation layer.During production, speed of agitator controls at 170 revs/min, and the temperature of electric with worm line controls at 60 DEG C, and be the positive pressure of nitrogen atmosphere of 0.4 ~ 0.6MPa in catalyst preparation tank 7, slurry catalyst compound concentration is 10 ~ 100g/L.
Catalyst preparation tank 7, from bottom discharge, through volume-displacement 8 to delivery pump 9, is transported to slurries or liquid catalyst counterbalance valve 10 place that setting value is 2.1MPa, meanwhile, gas flowmeter 6 by the high pressure nitrogen through gas pressure reducer 13 with 10Nm
3the flow of/h is sent into slurries or liquid catalyst in the nozzle body 3 of atomizer by catalyst injection pipe 11.
Require that atomizer is inserted gas-phase fluidized-bed reactor 12 according to polymerization technique inner, the feeding mouth 1 of atomizer is connected with the outlet of catalyst injection pipe 11, connected mode is for removably connecting, select to be threaded herein, the discharging opening 2 of atomizer stretches in gas-phase fluidized-bed reactor 4, slurries or liquid catalyst pass through catalyst injection pipe 11 under the conveying of high pressure nitrogen, and carry out gas-liquid mixed in catalyst injection pipe 11 after, enter the nozzle body 3 of atomizer, and carry out abundant gas-liquid mixed in cavity 4 after, because the pressure of gas-liquid mixture is higher than gas-phase fluidized-bed reactor 12, sprayed by the discharging opening 2 of atomizer, fully be atomized in gas-phase fluidized-bed reactor 12, be uniformly dispersed, reach the object of stability contorting polymerisation.
Embodiment 3
Shown in Fig. 3 and Fig. 5, the atomizer that the utility model provides, for the charging of gas-phase fluidized-bed reactor inside slurries or liquid catalyst, atomizer comprises nozzle body 3, lay respectively at feeding mouth 1 and the discharging opening 2 at nozzle body 3 two ends, the cavity 4 that one is communicated with feeding mouth and discharging opening is formed in nozzle body 3, the inwall of cavity 4 near feeding mouth 1 side is straight smooth, the both sides of the inwall in the middle part of cavity are equipped with corrugated protruding 5, each protruding 5 is interlaced with the projection on opposite, the cross section of protruding 5 is semicircle or half elliptic, the cross section of cavity 4 near discharging opening 2 side is wide mouth outwardly horn-like.
Described feeding mouth 1 is removably connected with the port of export of catalyst injection pipe, and the mode of removably connecting is that buckle connects.Discharging opening 2 stretches into the inside of gas-phase fluidized-bed reactor.The material of this atomizer is pottery, can bear certain pressure, and non-friable.
The utility model additionally provides a kind of gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The utility model also provides a kind of gas fluidized-bed process manufacture of polyolefins device, and this process units comprises a gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The catalyst preparation tank 7 of this process units is the GB150-1998 of a sealing, and this pressure vessel has the oblique paddle stirrer of three leaves in establishing, its outer wall is furnished with electric with worm line, and is provided with heat-insulation layer.During production, speed of agitator controls at 170 revs/min, and the temperature of electric with worm line controls at 60 DEG C, and be the positive pressure of nitrogen atmosphere of 0.4 ~ 0.6MPa in catalyst preparation tank 7, slurry catalyst compound concentration is 10 ~ 100g/L.
Catalyst preparation tank 7, from bottom discharge, through volume-displacement 8 to delivery pump 9, is transported to slurries or liquid catalyst counterbalance valve 10 place that setting value is 2.1MPa, meanwhile, gas flowmeter 6 by the high pressure nitrogen through gas pressure reducer 13 with 10Nm
3the flow of/h is sent into slurries or liquid catalyst in the nozzle body 3 of atomizer by catalyst injection pipe 11.
Require that atomizer is inserted gas-phase fluidized-bed reactor 12 according to polymerization technique inner, the feeding mouth 1 of atomizer is connected with the outlet of catalyst injection pipe 11, connected mode is for removably connecting, select to be threaded herein, the discharging opening 2 of atomizer stretches in gas-phase fluidized-bed reactor 4, slurries or liquid catalyst pass through catalyst injection pipe 11 under the conveying of high pressure nitrogen, and carry out gas-liquid mixed in catalyst injection pipe 11 after, enter the nozzle body 3 of atomizer, and carry out abundant gas-liquid mixed in cavity 4 after, because the pressure of gas-liquid mixture is higher than gas-phase fluidized-bed reactor 12, sprayed by the discharging opening 2 of atomizer, fully be atomized in gas-phase fluidized-bed reactor 12, be uniformly dispersed, reach the object of stability contorting polymerisation.
Embodiment 4
Shown in Fig. 4 and Fig. 5, the atomizer that the utility model provides, for the charging of gas-phase fluidized-bed reactor inside slurries or liquid catalyst, atomizer comprises nozzle body 3, lays respectively at feeding mouth 1 and the discharging opening 2 at nozzle body 3 two ends, the cavity 4 that one is communicated with feeding mouth and discharging opening is formed in nozzle body 3, the inwall of cavity 4 is straight smooth, and the cross section of cavity 4 near discharging opening 2 side is wide mouth outwardly horn-like.
Described feeding mouth 1 is removably connected with the port of export of catalyst injection pipe, and the mode of removably connecting is that buckle connects.Discharging opening 2 is an opening along the axis tangent plane of 30 ° obliquely of nozzle body, and discharging opening 2 stretches into the inside of gas-phase fluidized-bed reactor, make to enter the slurries of gas-phase fluidized-bed reactor 12 or liquid catalyst head-on to contact with air-flow vertically upward in gas-phase fluidized-bed reactor 12, strengthen atomizing effect.
The material of this atomizer is stainless steel, can bear certain pressure, and non-friable.
The utility model additionally provides a kind of gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The utility model also provides a kind of gas fluidized-bed process manufacture of polyolefins device, and this process units comprises a gas-phase fluidized-bed reactor, and this reactor comprises the atomizer described in the present embodiment.
The catalyst preparation tank 7 of this process units is the GB150-1998 of a sealing, and this pressure vessel has the oblique paddle stirrer of three leaves in establishing, its outer wall is furnished with electric with worm line, and is provided with heat-insulation layer.During production, speed of agitator controls at 170 revs/min, and the temperature of electric with worm line controls at 60 DEG C, and be the positive pressure of nitrogen atmosphere of 0.4 ~ 0.6MPa in catalyst preparation tank 7, slurry catalyst compound concentration is 10 ~ 100g/L.
Catalyst preparation tank 7, from bottom discharge, through volume-displacement 8 to delivery pump 9, is transported to slurries or liquid catalyst counterbalance valve 10 place that setting value is 2.1MPa, meanwhile, gas flowmeter 6 by the high pressure nitrogen through gas pressure reducer 13 with 10Nm
3the flow of/h is sent into slurries or liquid catalyst in the nozzle body 3 of atomizer by catalyst injection pipe 11.
Require that atomizer is inserted gas-phase fluidized-bed reactor 12 according to polymerization technique inner, the feeding mouth 1 of atomizer is connected with the outlet of catalyst injection pipe 11, connected mode is for removably connecting, select to be threaded herein, the discharging opening 2 of atomizer stretches in gas-phase fluidized-bed reactor 4, slurries or liquid catalyst pass through catalyst injection pipe 11 under the conveying of high pressure nitrogen, and carry out gas-liquid mixed in catalyst injection pipe 11 after, enter the nozzle body 3 of atomizer, and carry out abundant gas-liquid mixed in cavity 4 after, because the pressure of gas-liquid mixture is higher than gas-phase fluidized-bed reactor 12, sprayed by the discharging opening 2 of atomizer, fully be atomized in gas-phase fluidized-bed reactor 12, be uniformly dispersed, reach the object of stability contorting polymerisation.
Atomizer provided by the utility model, enhancing liquid or slurry catalyst enter the atomizing effect of reactor, the porch entering reactor at liquid or slurry catalyst is avoided to form catalyst buildup, so that blocking, slurries or liquid catalyst are fully atomized in gas-phase fluidized-bed reactor, be uniformly dispersed, polymerisation can stability contorting.
Gas-phase fluidized-bed reactor provided by the utility model, can ensure that slurries or liquid catalyst are in the steadily long-acting operation of this reactor, avoid blocking the serious consequences such as the too high and implode of the reactor local temperature caused because being atomized uneven, catalyst inlet, damage is caused to equipment.
Gas fluidized-bed process manufacture of polyolefins device provided by the utility model, can ensure that slurries or liquid catalyst are in the steadily long-acting operation of this device, can save a large amount of human and material resources resource, for process units maximizing the benefits provides safeguard.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (10)
1. an atomizer, comprise nozzle body, lay respectively at feeding mouth and the discharging opening at nozzle body two ends, it is characterized in that, the cavity that one is communicated with feeding mouth and discharging opening is formed in described nozzle body, the inner wall smooth of described cavity, the cross section of described cavity near discharging opening side is wide mouth outwardly horn-like.
2. atomizer according to claim 1, is characterized in that, described discharging opening is an opening along the axis tangent plane of 30 ~ 60 ° obliquely of nozzle body.
3. atomizer according to claim 2, is characterized in that, described discharging opening is an opening along the axis tangent plane of 45 ° obliquely of nozzle body.
4. the atomizer according to any one of claim 1-3, is characterized in that, on the inwall in the middle part of described cavity, at least side is provided with corrugated projection.
5. the atomizer according to any one of claim 1-3, is characterized in that, on the inwall in the middle part of described cavity, both sides are equipped with corrugated projection, and the projection on described each projection and opposite is symmetrical or interlaced.
6. atomizer according to claim 4, is characterized in that, the cross section of described projection is semicircle or half elliptic.
7. atomizer according to claim 5, is characterized in that, the cross section of described projection is semicircle or half elliptic.
8. atomizer according to claim 1, is characterized in that, the material of described atomizer is stainless steel, alloy or pottery.
9. a gas-phase fluidized-bed reactor, is characterized in that, this reactor comprises the atomizer as described in any one of claim 1-8, and the discharging opening of described atomizer stretches into the inside of gas-phase fluidized-bed reactor.
10. a gas fluidized-bed process manufacture of polyolefins device, it is characterized in that, this process units comprises a gas-phase fluidized-bed reactor, this reactor comprises the atomizer as described in any one of claim 1-8, the feeding mouth of described atomizer is removably connected with the port of export of the catalyst injection pipe of process units, described in removably connect mode for being threaded, cutting ferrule connect or buckle connect.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948248A (en) * | 2018-06-26 | 2018-12-07 | 中国石油天然气股份有限公司 | A kind of method, apparatus of vapor phase method production polyolefin elastomer and the application of polyolefin elastomer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948248A (en) * | 2018-06-26 | 2018-12-07 | 中国石油天然气股份有限公司 | A kind of method, apparatus of vapor phase method production polyolefin elastomer and the application of polyolefin elastomer |
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