CN105435730A - PP (propylene) prepolymerization reactor - Google Patents
PP (propylene) prepolymerization reactor Download PDFInfo
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- CN105435730A CN105435730A CN201511017666.9A CN201511017666A CN105435730A CN 105435730 A CN105435730 A CN 105435730A CN 201511017666 A CN201511017666 A CN 201511017666A CN 105435730 A CN105435730 A CN 105435730A
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- cylindrical shell
- upper cover
- cooling medium
- low head
- cooling device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention provides a PP (propylene) prepolymerization reactor. The PP prepolymerization reactor comprises an upper seal head, a cylinder and a lower seal head which are sequentially connected from top to bottom, wherein a material inlet is formed in the upper seal head, and a material outlet is formed in the lower seal head; a cylinder and lower seal head jacket is arranged on the outer walls of the cylinder and the lower seal head, an upper seal head cooling device is arranged on the upper seal head, and a stirring device and an inner cooling device are arranged in the cylinder. On one hand, the cylinder and the lower seal head are cooled by the cylinder and the lower seal head jacket, on the other hand, the upper seal head is cooled by the upper seal head cooling device, meanwhile, the inside of the PP prepolymerization reactor is further cooled, the heat exchange area is sufficiently increased, the heat exchange efficiency is improved, the condition that the prepolymerization reaction rate is out of control due to overheating of the PP prepolymerization reactor is prevented, and homogeneity of products after reaction is guaranteed. By means of the stirring device, materials in the PP prepolymerization reactor are uniform, the safety of the PP prepolymerization reactor is improved, the scale of the PP prepolymerization reactor is enlarged, and the product quality is improved.
Description
Technical field
The present invention relates to chemical technology field, especially relate to a kind of For Propylene Pre-polymerization reactor.
Background technology
Polypropylene (PP) plastics are thermoplastic synthetic resins of a kind of function admirable, and application is extensive, have become one of product with the fastest developing speed in the large synthetic resin in the world five.PP Production Technology mainly contains four kinds, ie in solution method, solvent slurry method (abbreviation slurry method), substance law and gas-phase process.Also exploitation has substance law-vapor phase method group technology in addition.Mass polymerization technique is divided into again continuous polymerization technique and batch polymerization processes two kinds.According to the difference of polymerization technique, some polymerization technique, for making preactivating catalysts, has prepolymerisation stage, and namely catalyst first carries out pre-polymerization at a lower temperature with a small amount of propylene.For Propylene Pre-polymerization can improve catalyst activity, improves morphology, reduce fine powder produces, improves the quality of products, enhances productivity.
In order to economize on resources, gathering industry development and society increase polypropylene demand, a lot of polypropylene factory all needs increase device capbility and improve the quality of products, but existing technique and device also all have problems in the amplification of industrialization production capacity and the application process of improving the quality of products, especially, in more crucial prepolymerization technology, because prepolymerization still is overheated, prepolymerization speed is out of control, result in process product homogeneity poor, have a strong impact on the performance of terminal polypropylene product.
Because propylene polymerization is exothermic reaction, in prior art, these heats adopt water at low temperature to be removed by jacket for heat exchange mostly.Because For Propylene Pre-polymerization reacting kettle jacketing heat exchange area is less, directly constrain unit scale.It is less that these technology all do not solve For Propylene Pre-polymerization reacting kettle jacketing heat exchange area, the technical problem of direct confining device scale and product quality.
Summary of the invention
The object of the present invention is to provide a kind of For Propylene Pre-polymerization reactor, to solve the little technical problem of For Propylene Pre-polymerization reactor heat exchange area per unit volume of the prior art.
The invention provides a kind of For Propylene Pre-polymerization reactor, comprise the upper cover, cylindrical shell and the low head that from top to bottom connect successively; Described upper cover is provided with material inlet, and described low head is provided with material outlet;
Wherein, the outer wall of described cylindrical shell and described low head is provided with cylindrical shell and low head chuck, and described upper cover is provided with upper cover cooling device, is provided with agitating device and interior cooling device in described cylindrical shell.
Further, described interior cooling device is interior cooling tube.
Further, described interior cooling tube along described cylindrical shell twist;
Or
Described interior cooling tube comprises longitudinal arm that multiple head and the tail connect successively, and the bearing of trend of each described longitudinal arm is parallel with the bearing of trend of described cylindrical shell.
Further, described upper cover cooling device is upper cover cooling coil or upper cover cooling jacket.
Further, described agitating device is agitator.
Further, chuck Internal baffle is provided with in described cylindrical shell and low head chuck.
Further, one end of described cylindrical shell and low head chuck is cylindrical shell and low head chuck cooling medium inlet, the other end of described cylindrical shell and low head chuck is cylindrical shell and the outlet of low head chuck cooling medium, wherein, described cylindrical shell and low head chuck cooling medium inlet are positioned at the bottom of described low head, and described cylindrical shell and the outlet of low head chuck cooling medium are arranged on the top of described cylindrical shell.
Further, described cylindrical shell and low head chuck cooling medium inlet or exit are provided with cylindrical shell and low head cooling medium by-pass valve control, to control the flow of the cooling medium in described cylindrical shell and low head chuck.
Further, one end of described interior cooling device is interior cooling device cooling medium inlet, and the other end of described interior cooling device is the outlet of interior cooling device cooling medium; Described interior cooling device cooling medium inlet or exit are provided with interior cooling medium by-pass valve control, to control the flow of the cooling medium in described interior cooling device.
Further, one end of described upper cover cooling device is upper cover cooling device cooling medium inlet, the other end of described upper cover cooling device is the outlet of upper cover cooling device cooling medium, described upper cover cooling device cooling medium inlet or exit are provided with upper cover cooling medium by-pass valve control, to control the flow of the cooling medium in described upper cover cooling device.
During work, raw material propylene and catalyst are sent into For Propylene Pre-polymerization reactor from the material inlet at For Propylene Pre-polymerization reactor top and are carried out prepolymerization, in cylindrical shell, material fully contacts with catalyst, mixes, and under uniform temperature, pressure, carries out prepolymerization by agitating device effect.Slurry after prepolymerization is delivered to propene polymerization reactor from the material outlet bottom For Propylene Pre-polymerization reactor and is carried out polymerisation.Because propylene polymerization is exothermic reaction, and because For Propylene Pre-polymerization reactor is the operation of full still, namely the raw material such as propylene and catalyst is full of in For Propylene Pre-polymerization reactor, even for ensureing material heat transmission, one aspect of the present invention is cooled material by the cooling medium of cylindrical shell and low head chuck, is cooled on the other hand by the cooling medium of upper cover cooling device to material.In addition, when For Propylene Pre-polymerization reactor volume is larger, the heat at For Propylene Pre-polymerization reactor center cannot be shifted out by the cooling medium in cylindrical shell, upper cover and low head in time, thus For Propylene Pre-polymerization reactor inside there will be focus (place that heat is concentrated), this will certainly make polymerization slurry generation temperature runaway, affects the safety of polymer quality and For Propylene Pre-polymerization reactor.Therefore, the present invention also cools For Propylene Pre-polymerization reactor inside by interior cooling device simultaneously.The present invention carries out the cooling of three aspects by cylindrical shell and low head chuck, upper cover cooling device and interior cooling device to material, increases heat exchange area; Improve heat exchange efficiency; Avoid because For Propylene Pre-polymerization reaction temperature is overheated and cause prepolymerization speed out of control, avoiding producing hot localised points, improve the homogeneity of the temperature of materials inside.The security of polymer quality and For Propylene Pre-polymerization reactor can be improved simultaneously, expand the scale of For Propylene Pre-polymerization reactor.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the For Propylene Pre-polymerization reactor that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is the structural representation of the upper cover cooling device of the For Propylene Pre-polymerization reactor of an embodiment of the present invention.
Fig. 3 is the structural representation of the upper cover cooling device of the For Propylene Pre-polymerization reactor of the another kind of embodiment of the present invention.
The structural representation of cooling device in the For Propylene Pre-polymerization reactor that Fig. 4 provides for an embodiment of the present invention;
The structural representation of cooling device in the For Propylene Pre-polymerization reactor that Fig. 5 provides for the another kind of embodiment of the present invention.
Reference numeral:
1-For Propylene Pre-polymerization reactor; 2-agitating device;
3-cylindrical shell; 4-upper cover;
5-low head; 6-cylindrical shell and low head chuck;
7-upper cover cooling device; Cooling device in 8-;
9-chuck Internal baffle; 10-material inlet;
11-material outlet;
12-cylindrical shell and low head chuck cooling medium inlet;
13-cylindrical shell and the outlet of low head chuck cooling medium;
Cooling device cooling medium inlet in 14-;
Cooling device cooling medium outlet in 15-;
16-upper cover cooling device cooling medium inlet;
17-upper cover cooling device cooling medium exports;
18-cylindrical shell and low head cooling medium by-pass valve control;
Cooling medium by-pass valve control in 19-;
20-upper cover cooling medium by-pass valve control.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.Wherein, term " primary importance " and " second place " are two different positions.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
The structural representation of the For Propylene Pre-polymerization reactor 1 that Fig. 1 provides for the embodiment of the present invention.The invention provides a kind of For Propylene Pre-polymerization reactor 1, as shown in the figure, described For Propylene Pre-polymerization reactor 1 comprises the upper cover 4, cylindrical shell 3 and the low head 5 that from top to bottom connect successively; Described upper cover 4 is provided with material inlet 10, and described low head 5 is provided with material outlet 11; Wherein, the outer wall of described cylindrical shell 3 and described low head 5 is provided with cylindrical shell and low head chuck 6, and described upper cover 4 is provided with upper cover cooling device 7, is provided with agitating device and interior cooling device 8 in described cylindrical shell 3.
It should be noted that, in the present invention, term " cylindrical shell and low head chuck 6 " comprises the cylindrical shell chuck be arranged on cylindrical shell 3 outer wall and the low head chuck be arranged on low head 5 outer wall, and cylindrical shell chuck and low head chuck form described cylindrical shell and low head chuck 6 jointly.
Wherein, low head 5 and being made into integration with cylindrical shell 3, also can be separately made.Upper cover 4 is connected with cylindrical shell 3, removably can be linked together by flange.
Cylindrical shell and low head chuck 6 are coated on the outer wall of cylindrical shell 3 and low head 5, for cooling cylindrical shell 3 and low head 5; Upper cover cooling device 7 is coated on upper cover 4 outer wall, and for cooling upper cover 4, interior cooling device 8 is arranged on cylindrical shell 3 inside for cooling the reaction mass of cylindrical shell 3 inside.That is, the present invention divides three tunnels to carry out omnibearing cooling to the interior media of For Propylene Pre-polymerization reactor 1, expands heat exchange area, increases the heat exchange area of unit volume.
During work, raw material propylene and catalyst are sent into For Propylene Pre-polymerization reactor 1 from the material inlet 10 at For Propylene Pre-polymerization reactor 1 top and are carried out prepolymerization, in cylindrical shell 3, material fully contacts with catalyst, mixes, and under uniform temperature, pressure, carries out prepolymerization by agitating device effect.Slurry after prepolymerization is delivered to propene polymerization reactor from the material outlet 11 bottom For Propylene Pre-polymerization reactor 1 and is carried out polymerisation.Because propylene polymerization is exothermic reaction, and because For Propylene Pre-polymerization reactor is the operation of full still, namely the raw material such as propylene and catalyst is full of in For Propylene Pre-polymerization reactor 1, one aspect of the present invention is cooled by cylindrical shell and low head chuck 6 pairs of reaction mediums, is cooled on the other hand by upper cover cooling device 7 pairs of reaction mediums.
In addition, when For Propylene Pre-polymerization reactor 1 volume is larger, the heat at For Propylene Pre-polymerization reactor 1 center cannot remove heat by cylindrical shell and low head chuck 6, upper cover cooling device 7 in time, thus For Propylene Pre-polymerization reactor 1 inside there will be focus (place that heat is concentrated), this will certainly make polymer beads generation temperature runaway, affects the safety of polymer quality and For Propylene Pre-polymerization reactor 1.Therefore, the present invention also cools by interior cooling device 8 pairs of For Propylene Pre-polymerization reactor 1 inside simultaneously.The present invention carries out the cooling of three aspects by cylindrical shell and low head chuck, upper cover cooling device and interior cooling device to material, increases heat exchange area; Improve heat exchange efficiency; Avoid because For Propylene Pre-polymerization reaction temperature is overheated and cause prepolymerization speed out of control, avoiding producing hot localised points, improve the homogeneity of For Propylene Pre-polymerization reactor 1 materials inside temperature.The security of polymer quality and For Propylene Pre-polymerization reactor 1 can be improved simultaneously, expand the scale of For Propylene Pre-polymerization reactor 1.
Preferably, in the present embodiment, described interior cooling device 8 is cooling tube.The present invention arranges agitating device and interior cooling tube in the inside of For Propylene Pre-polymerization reactor 1, agitating device plays and makes the material in For Propylene Pre-polymerization reactor 1 and the well-mixed effect of heat, and interior cooling tube plays the effect of cooling For Propylene Pre-polymerization reactor 1 materials inside on the one hand; On the other hand, interior cooling tube in the present invention also plays the effect of still Internal baffle, interior cooling tube plays the regular motion upsetting material, make stirring in For Propylene Pre-polymerization reactor 1 more abundant, not easily form whirlpool, also not easily form focus, thus effectively avoid polymerization slurry generation temperature runaway, ensure polymer quality and For Propylene Pre-polymerization reactor 1 safety.
Interior cooling device 8 can be the cooling tube of various types.
The structural representation of cooling device 8 in the For Propylene Pre-polymerization reactor 1 that Fig. 4 provides for an embodiment of the present invention; As shown in Figure 4, described interior cooling tube along described cylindrical shell twist; That is, interior cooling tube carries out spiral winding with the bearing of trend along cylindrical shell.
Spiral interior cooling tube described above increases interior cooling device 8 and the contact area of material, improves heat exchange area per unit volume, improves heat exchange efficiency, ensure that the homogeneity of product.
The structural representation of cooling device 8 in the For Propylene Pre-polymerization reactor 1 that Fig. 5 provides for the another kind of embodiment of the present invention.As shown in Figure 5, described interior cooling tube comprises longitudinal arm that multiple head and the tail connect successively, and the bearing of trend of each described longitudinal arm is parallel with the bearing of trend of described cylindrical shell 3.Alternatively, interior cooling tube is S-shaped.Longitudinal arm can play baffle effect better, is come by material dispersion better, make the stirring of agitating device evenly.
Upper cover cooling device 7 in the present invention is upper cover 4 cooling coil or upper cover 4 cooling jacket, and other cooling devices be applicable to.
Fig. 2 is the structural representation of the For Propylene Pre-polymerization reactor 1 upper cover cooling device 7 of an embodiment of the present invention.In the embodiment shown in Figure 2, upper cover cooling device 7 is upper cover 4 cooling coil.Upper cover 4 cooling coil is wrapped on the outer wall of upper cover 4.
Fig. 3 is the structural representation of the For Propylene Pre-polymerization reactor 1 upper cover cooling device 7 of the another kind of embodiment of the present invention.In the embodiment shown in fig. 3, upper cover cooling device 7 is upper cover 4 cooling jacket.
Wherein, described agitating device is the various agitators that can play stirring action.
As shown in Figure 1, chuck Internal baffle 9 is provided with in described cylindrical shell and low head chuck 6.Chuck Internal baffle 9 can twist around on the outer wall of cylindrical shell.The present embodiment can avoid fluid short circuit by setting up chuck Internal baffle 9, increases flow velocity, the cooling medium in cylindrical shell and low head chuck 6 is flowed with turbulence state, improves heat exchange efficiency.
In addition, one end of described cylindrical shell and low head chuck 6 is cylindrical shell and low head chuck cooling medium inlet 12, the other end of described cylindrical shell and low head chuck 6 is cylindrical shell and low head chuck cooling medium outlet 13, wherein, described cylindrical shell and low head chuck cooling medium inlet 12 are positioned at the bottom of described low head 5, and described cylindrical shell and low head chuck cooling medium outlet 13 are arranged on the top of described cylindrical shell 3.
Cooling medium in cylindrical shell and low head chuck 6 enters from the bottom of low head 5, discharge from the top of cylindrical shell 3, as can be seen here, cooling medium is upstream, this mode increases the time of contact of cooling medium and cylindrical shell 3 and low head 5, extend the time of heat exchange, improve heat exchange efficiency further.
In addition, described cylindrical shell and low head chuck cooling medium inlet 12 or cylindrical shell and low head chuck cooling medium export 13 places and are provided with cylindrical shell and low head cooling medium by-pass valve control 18, to control the flow of the cooling medium in described cylindrical shell and low head chuck 6.Low head 5 cooling medium by-pass valve control can be flow control valve, such as choke valve, flow speed control valve etc.For Propylene Pre-polymerization reactor 1 in the present embodiment has controllability, when can comprise the adjustment such as operating temperature, operating pressure, the time of staying, catalyst concn at technological parameter, larger cold heat-obtaining adjustment space is provided by cylindrical shell and low head cooling medium by-pass valve control 18, thus the aperture of temperature flexible modulation low head 5 cooling medium by-pass valve control according to For Propylene Pre-polymerization reactor 1, make the temperature of For Propylene Pre-polymerization reactor 1 maintain optimal temperature.
Further, one end of described interior cooling device 8 is interior cooling device cooling medium inlet 14, and the other end of described interior cooling device 8 is interior cooling device cooling medium outlet 15; Described interior cooling device cooling medium inlet 14 or interior cooling device cooling medium export 15 places and are provided with interior cooling medium by-pass valve control 19, to control the flow of the cooling medium in described interior cooling device 8.Interior cooling medium by-pass valve control 19 can be flow control valve, such as choke valve, flow speed control valve etc.For Propylene Pre-polymerization reactor 1 in the present embodiment has controllability, when can comprise the adjustment such as operating temperature, operating pressure, the time of staying, catalyst concn at technological parameter, larger cold heat-obtaining adjustment space is provided by interior cooling medium by-pass valve control 19, thus according to the aperture of cooling medium by-pass valve control 19 in the temperature flexible modulation of For Propylene Pre-polymerization reactor 1, make the temperature of For Propylene Pre-polymerization reactor 1 maintain optimal temperature.
Further, one end of described upper cover cooling device 7 is upper cover cooling device cooling medium inlet 16, the other end of described upper cover cooling device 7 is upper cover cooling device cooling medium outlet 17, described upper cover cooling device cooling medium inlet 16 or upper cover cooling device cooling medium export 17 places and are provided with upper cover cooling medium by-pass valve control 20, to control the flow of the cooling medium in described upper cover cooling device 7.Upper cover cooling medium by-pass valve control 20 can be flow control valve, such as choke valve, flow speed control valve etc.For Propylene Pre-polymerization reactor 1 in the present embodiment has controllability, when can comprise the adjustment such as operating temperature, operating pressure, the time of staying, catalyst concn at technological parameter, larger cold heat-obtaining adjustment space is provided by upper cover cooling medium by-pass valve control 20, thus the aperture of temperature flexible modulation upper cover cooling medium by-pass valve control 20 according to For Propylene Pre-polymerization reactor 1, make the temperature of For Propylene Pre-polymerization reactor 1 maintain optimal temperature.
As shown in Figure 1, raw material propylene and catalyst are sent into For Propylene Pre-polymerization reactor 1 from For Propylene Pre-polymerization reactor 1 top material import 10, cooling medium is leaded up to cooling medium inlet and is entered cylindrical shell 3 and low head 5 chuck, cooling medium inlet of leading up to enters upper cover cooling device 7, cooling medium inlet of leading up in addition enters interior cooling device 8, and respectively by low head 5 cooling medium by-pass valve control, interior cooling medium by-pass valve control 19 and low head 5 cooling medium by-pass valve control regulate cooling medium (cooling medium can be water) flow, cooling medium exports 13 through cylindrical shell and low head chuck cooling medium after absorbing heat respectively, upper cover cooling device cooling medium outlet 17, interior cooling device cooling medium outlet 15 is flowed out.In cylindrical shell 3, material fully contacts with catalyst, mixes, and under uniform temperature, pressure, carries out prepolymerization by agitator effect.Slurry after prepolymerization is delivered to propene polymerization reactor from For Propylene Pre-polymerization reactor 1 bottoms material outlet 11 and is carried out polymerisation.
The present invention is by changing For Propylene Pre-polymerization reactor thermal withdrawal mode, comprise the change of internal structure and external structure, namely outside by cooling, inside is cooled by agitating device and interior cooling tube, substantially increase For Propylene Pre-polymerization reactor 1 heat exchange area per unit volume and heat exchange efficiency, reach the deficiency of minimizing For Propylene Pre-polymerization reactor unit volume exchange capability of heat to the object of the restriction of device single line production capacity, thus expansion instrument single line production scale.
Particularly, the present embodiment provides a kind of For Propylene Pre-polymerization reactor 1, and wherein, upper cover 4 coil pipe external diameter is x, 15mm≤x≤150mm, and adjacent disc tube hub spacing is y, y > 15mm side by side; Cooling jacket inner chamber is wide is z, 20mm≤z≤150mm; Described interior cooling device 8 is in cylindrical shell 3, and its middle cylinder body 3 length is c; Described agitating device in cylindrical shell 3, wherein agitating device radius e; Described interior cooling device 8 can be interior cooling coil or interior cooling vertical tube, and wherein, cooling coil external diameter is α, 15mm≤α≤150mm, and adjacent disc tube hub spacing is β, β > 15mm side by side; Interior cooling vertical tube external diameter is γ, 15mm≤γ≤150mm; Inside described interior cooling tube, outer span cylindrical shell 3 center is f, wherein e < f.Various parameters in the For Propylene Pre-polymerization reactor 1 that the present embodiment provides, can ensure good cooling effect, improve heat exchange area per unit volume and heat exchange efficiency further, improve the quality of polymer.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a For Propylene Pre-polymerization reactor, is characterized in that, comprises the upper cover, cylindrical shell and the low head that from top to bottom connect successively; Described upper cover is provided with material inlet, and described low head is provided with material outlet;
Wherein, the outer wall of described cylindrical shell and described low head is provided with cylindrical shell and low head chuck, and described upper cover is provided with upper cover cooling device, is provided with agitating device and interior cooling device in described cylindrical shell.
2. For Propylene Pre-polymerization reactor according to claim 1, is characterized in that, described interior cooling device is interior cooling tube.
3. For Propylene Pre-polymerization reactor according to claim 1, is characterized in that, described interior cooling tube along described cylindrical shell twist;
Or
Described interior cooling tube comprises longitudinal arm that multiple head and the tail connect successively, and the bearing of trend of each described longitudinal arm is parallel with the bearing of trend of described cylindrical shell.
4. For Propylene Pre-polymerization reactor according to claim 1, is characterized in that, described upper cover cooling device is upper cover cooling coil or upper cover cooling jacket.
5. For Propylene Pre-polymerization reactor according to claim 1, is characterized in that, described agitating device is agitator.
6. For Propylene Pre-polymerization reactor according to claim 1, is characterized in that, is provided with chuck Internal baffle in described cylindrical shell and low head chuck.
7. the For Propylene Pre-polymerization reactor according to any one of claim 1-6, it is characterized in that, one end of described cylindrical shell and low head chuck is cylindrical shell and low head chuck cooling medium inlet, the other end of described cylindrical shell and low head chuck is cylindrical shell and the outlet of low head chuck cooling medium, wherein, described cylindrical shell and low head chuck cooling medium inlet are positioned at the bottom of described low head, and described cylindrical shell and the outlet of low head chuck cooling medium are arranged on the top of described cylindrical shell.
8. For Propylene Pre-polymerization reactor according to claim 7, it is characterized in that, described cylindrical shell and low head chuck cooling medium inlet or exit are provided with cylindrical shell and low head cooling medium by-pass valve control, to control the flow of the cooling medium in described cylindrical shell and low head chuck.
9. the For Propylene Pre-polymerization reactor according to any one of claim 1-6, is characterized in that, one end of described interior cooling device is interior cooling device cooling medium inlet, and the other end of described interior cooling device is the outlet of interior cooling device cooling medium; Described interior cooling device cooling medium inlet or exit are provided with interior cooling medium by-pass valve control, to control the flow of the cooling medium in described interior cooling device.
10. the For Propylene Pre-polymerization reactor according to any one of claim 1-6, it is characterized in that, one end of described upper cover cooling device is upper cover cooling device cooling medium inlet, the other end of described upper cover cooling device is the outlet of upper cover cooling device cooling medium, described upper cover cooling device cooling medium inlet or exit are provided with upper cover cooling medium by-pass valve control, to control the flow of the cooling medium in described upper cover cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017666.9A CN105435730A (en) | 2015-12-29 | 2015-12-29 | PP (propylene) prepolymerization reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017666.9A CN105435730A (en) | 2015-12-29 | 2015-12-29 | PP (propylene) prepolymerization reactor |
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| Publication Number | Publication Date |
|---|---|
| CN105435730A true CN105435730A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511017666.9A Pending CN105435730A (en) | 2015-12-29 | 2015-12-29 | PP (propylene) prepolymerization reactor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202658112U (en) * | 2012-06-11 | 2013-01-09 | 无锡力马化工机械有限公司 | Inner coiler type propylene polymerization kettle |
| CN204768368U (en) * | 2015-06-29 | 2015-11-18 | 惠州市建科实业有限公司 | Stirring kettle |
-
2015
- 2015-12-29 CN CN201511017666.9A patent/CN105435730A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202658112U (en) * | 2012-06-11 | 2013-01-09 | 无锡力马化工机械有限公司 | Inner coiler type propylene polymerization kettle |
| CN204768368U (en) * | 2015-06-29 | 2015-11-18 | 惠州市建科实业有限公司 | Stirring kettle |
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Application publication date: 20160330 |