CN204134603U - There is the polymerization autoclave of external heating kit - Google Patents
There is the polymerization autoclave of external heating kit Download PDFInfo
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- CN204134603U CN204134603U CN201420172718.4U CN201420172718U CN204134603U CN 204134603 U CN204134603 U CN 204134603U CN 201420172718 U CN201420172718 U CN 201420172718U CN 204134603 U CN204134603 U CN 204134603U
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- autoclave
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- heating duct
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 116
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 60
- 230000004044 response Effects 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 229910001149 41xx steel Inorganic materials 0.000 claims abstract description 14
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 20
- 239000000956 alloy Substances 0.000 claims description 12
- 239000000376 reactant Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
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- 230000008859 change Effects 0.000 description 17
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- 239000000047 product Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 5
- 229910052794 bromium Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
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- 239000000126 substance Substances 0.000 description 4
- 229910001339 C alloy Inorganic materials 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
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- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
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- 238000007778 shielded metal arc welding Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
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- ZCILODAAHLISPY-UHFFFAOYSA-N biphenyl ether Natural products C1=C(CC=C)C(O)=CC(OC=2C(=CC(CC=C)=CC=2)O)=C1 ZCILODAAHLISPY-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
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- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
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- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to the polymerization autoclave with external heating kit, comprises autoclave vessel main body, autoclave entrance, pressure relief valve and heating duct.Autoclave vessel main body defines therein can the internal-response room of polymerization reaction take place.Autoclave vessel main body is also steel alloy.Heating duct around outer surface heat trnasfer part and be attached thereto.Heating duct has multiple coiling body around autoclave vessel main body and makes to add hot fluid and annular can flow through heating duct heat is delivered to internal-response room through heat trnasfer part.Heating duct is made up of chrome-moly steel.Heating duct also divides the low cycle facigue being connected to avoid stemming from the repetition period temperature contrast being greater than 80 DEG C substantially to damage with heat transmitting member.
Description
Technical field
The utility model relates to a kind of polymerization autoclave with external heating kit.
Background technology
In the past during many decades, the use of polymer is increased significantly, and this is at least in part due to the change of attainable material property and the lower cost relevant to forming complicated shape.For various polymer manufacturing apparatus, continous way polymerization technique and batch polymerization technique can be used.Often kind of technique all has the merits and demerits depending on multiple changing factor such as cost, output, polymer type, kinetics of polymerization and other priority.Batch polymerization technique typically uses the polymer reactor or autoclave that are heated to suitable technological temperature.Usually polymerization autoclave is designed to the high moderate pressure that can bear during technique.But specific polymerizing condition can vary widely according to the selection of specific polymerisation, additive, output and other changing factors multiple.
The heating of this polymer reactor typically comprises using heat is delivered to closed-loop path heating system in reactor from adding hot fluid.Heating system can comprise external heat conveyor screw, inner heating circuit, chuck system or other similar heat transfer systems.This system has intrinsic limitation in heat distribution, the rate of heat addition, reliability and operation constraint.Therefore, need to improve the heating system on this polymer reactor.
Utility model content
Have a polymerization autoclave for external heating kit, it can comprise autoclave vessel main body, autoclave entrance, pressure relief valve and heating duct.Autoclave vessel main body defines therein can the internal-response room of polymerization reaction take place.Container body has the outer surface and inner surface that limit container wall thickness.Container body is also made up of steel alloy.Described autoclave entrance is arranged in the top section of described autoclave vessel main body.Autoclave entrance is orientated through autoclave vessel main body, and polymerization reactant can be incorporated in internal-response room.The low portion of described autoclave vessel main body has the lower part wall thickness larger than the container wall thickness in the upper part of described autoclave vessel main body.Pressure relief valve and internal-response room fluidic communication.More particularly, steam also can optionally be discharged by pressure relief valve from internal-response room.Heating duct is coiled in the surrounding of the heat trnasfer part of outer surface and coupled.Heating duct has multiple coiling body around autoclave vessel main body, makes to add hot fluid capable of circulationly through heating duct, to be delivered in internal-response room by heat through heat trnasfer part.Heating duct also has heating duct wall thickness, and it is made up of chrome-moly steel.Heating duct also divides with heat transmitting member and is connected, and damages with the low cycle facigue avoiding stemming from the Periodic Temperature difference of the repetition being greater than 80 DEG C substantially.
By the detailed description of feature of the present utility model is hereafter described by means of example, extra feature and advantage of the present utility model will become apparent.
Accompanying drawing explanation
Fig. 1 is the sectional view of the polymerization autoclave according to an embodiment of the present utility model.
It should be noted that, accompanying drawing is only the example of multiple embodiment of the present utility model, and is not therefore intended to limit scope of the present utility model.
Detailed description of the invention
Although detailed description hereafter contains a lot of details for the purpose of illustrating the invention, person of skill in the art will appreciate that a lot of change of hereafter details and revise in the scope of disclosed embodiment.
Correspondingly, embodiment hereafter describes the present invention without loss of generality, and does not bring restriction to the present invention.Before describing the present invention in more detail, be to be understood that and the invention is not restricted to described specific embodiment, this is because this embodiment can change.It is also understood that used term is only the object for describing particular implementation here, and be not intended to limit, this is because scope of the present invention is only limited to the appended claims.Unless otherwise prescribed, used here all technical terms have the implication identical with the implication that the those of ordinary skill in the field belonging to the present invention is understood usually with scientific terminology.
As in this description and appending claims the singulative " " that uses and " this " comprise plural reference, unless the context clearly determines otherwise.Therefore, such as " polyamide " comprises multiple polyamide.
In the present invention, " comprising ", " containing " and " having " etc. can to have according to united states patent law give their meaning, and may imply that " comprising " etc., and be usually interpreted as open term.Term " by ... composition " be enclosed term, and the device, method, component, parts, structure, step etc. listed especially is only comprised according to the meaning of united states patent law.When will " substantially by ... composition " or " basic composition " etc. comprise for the present invention device, method, component, parts, structure, step etc. time, it relates to and similar composition disclosed herein, but it can comprise extra building stone, composition component, method step etc.But, to corresponding compound disclosed herein or method etc. Comparatively speaking, these extra building stones, composition component, method step etc. can not affect in fact foundation characteristic and the novel features of compound or method etc.In further details, when will " substantially by ... composition " or " basic composition " etc. comprise for the present invention device, system, method, component, parts, structure, step etc. time, its to have according to united states patent law give its meaning and these terms are open, as long as the basic or novel features recorded is not greater than described content changing, it allows to be greater than described content exists, but except prior art embodiment except.When use open-ended term, during as " comprising " or " comprising ", it should be understood that as clearly stated, also direct support that " substantially by ... composition " and " by ... form " etc. term.
Phrase, such as " be suitable for providing ", " being enough to cause " or " be enough to produce " etc. relate to the reaction condition relevant to time, temperature, solvent, reactant density etc. in the context of synthetic method, reaction condition can be changed with the output of the useful quantity or product that provide product, this be the common skill of experimenter in this area scope in.Unnecessarily, required product is for being only that product or parent material are totally consumed, and the required product provided can be separated or otherwise use further.
Should be understood that, ratio, concentration, amount or other data can be stated with the form of a scope here.It should be understood that and use this range format to be for convenience and simplicity.And therefore, should explain not only to comprise the data parameters that the end points as scope clearly states in a flexible way, and if each numerical value and subrange comprise " approximately ' X ' to approximately ' Y ' ", then the subrange also comprising all individual data parameters or be included in described scope.In order to illustrate, the concentration range of " about 0.1% to about 5% " should be interpreted as, not only comprise the concentration of clearly illustrate about 0.1 % by weight to about 5 % by weight, be also included within the single concentration (such as 1%, 2%, 3% and 4%) in illustrated scope and subrange (such as 0.5%, 1.1%, 2.2%, 3.3% and 4.4%).In one embodiment, term " about " can comprise and rounding off according to the tradition of the significant digits of data parameters.In addition, phrase " about ' X ' is to ' Y ' " comprises " about ' X ' arrives about ' Y ' ".
Here used term " about ", when relating to data parameters or scope, it allows change to a certain degree in certain numerical value or scope, such as stated numerical value or state 10% of range limit in or change in 5% on the other hand.
In addition, with enumerate or the mode of Ma Kushi group describe feature of the present invention or in place, person of skill in the art will appreciate that, therefore also describe the present invention according to any single key element of the key element of Ma Kushi group or subbase group.Such as, if X is described to be selected from the group be made up of bromine, chlorine and iodine, then as enumerated separately, describe the claim that claim that X is bromine and X are bromine and chlorine completely.Such as, feature of the present invention or in the place that describes according to this enumerating, person of skill in the art will appreciate that, therefore also describe the disclosure according to any single key element of the key element of Ma Kushi group or any combination of subbase group.Therefore, if X is described to be selected from the group be made up of bromine, chlorine and iodine, and Y is described to the group of selecting free methyl, ethyl and propyl group to form, then describe completely and support X to be bromine and Y is the claim of methyl.
As used herein, all constituent contents provide with the form of percentage by weight, unless otherwise stated.When relating to component solution, percentage refers to the percentage by weight of the component comprising solvent (such as water), except as otherwise noted.
When reading the disclosure, it will be evident to one skilled in the art that, here each independent embodiment that is described and that illustrate has independently parts and feature, and independently parts and feature are easy to any character separation of several embodiment with other or combination and do not deviate from scope of the present invention or spirit for these.Any described method can be described the order of situation implement or implement with any other feasible in logic order.
Batch polymerization reaction is often included in the repetitive cycling of the temperature during the different step of technique.Typically, polymerization reactant is filled in autoclave, by heating materials to being enough to start polymerization and drive reaction to carry out during technique.Once complete, material is extruded from autoclave or shifts out.Usually, clean and cleaning step in the middle of also can adopting between polymerization batch, to provide more stable product quality.Disadvantageously, this technique can be brought in autoclave and change along autoclave wall and along the significant temperature cycle of adjacent heating system (such as external heat coiling body).In addition, can cause being welded to connect the mechanical stress with adjacent materials place through each part of autoclave and the temperature contrast of heating system.
Illustratively embodiment, dicarboxylic polyamide is nylon-6 such as, and the formation of 6 comprises nylon salt and acid are transformed/stoichiometric number hour under the high temperature of about 189-250 DEG C.First the temperature of autoclave wall adds below hot fluid temperature common.Nylon-6, during the temperature and pressure condition in 6 batch process cycles is included in the beginning initial stage, being filled with of nylon salt, the stage of reaction, extrudes the change of stage and cleaning stage.Between the stage that these are different, variations in temperature can cause the temperature contrast between body at autoclave wall and heating plate.
Table 1 provides an example of circulating polymerization operating condition.
Table 1: temperature conditions
Significantly, the temperature contrast between heating coil body and autoclave wall can change very tempestuously.External heat conveyor screw is generally the outer surface being welded to autoclave most.Between reaction elementary period, the expansion of heating coil body can be subject to the restriction of relatively cold autoclave wall.This can cause the pressure loading of the elastic deformation limit that can exceed welding.Along with subsequently autoclave wall being heated to normal operating temperature, this permanent deformation can cause the stress in welding point.At temperature conditions During, stopping and the startup of such as boiling, cleaning steam, cleaning and reactor can cause similar distortion.In each case, variations in temperature can cause the thermograde running through the change of welding according to the time.In addition, for the multiple batches of cycle, between the container normal operating period, it can constantly be reused, and temperature can circulate from low to high in different batch cycle.
In the situation of producing nylon 6,6, for the production volume of standard, batch cycle time usually can at about 100-120 minute.Finally, the temperature contrast of this repetition can cause the low cycle facigue at the welding point place between outside heating coil body and autoclave wall to damage.The extruding that thermal conductance causes and deformation extent can change based on the Material selec-tion of autoclave heating container, heating duct and the welding alloy for being connected heating duct.In addition, the relative size of each parts and size also can affect the degree of distortion, and therefore low cycle facigue problem can occur along with passing by time.
Therefore, Fig. 1 shows polymerization autoclave 100 substantially, its external heating kit 102 that can comprise autoclave vessel main body 104 and comprise heating duct 110.Be also included within the top ends place of container for reactant and/or additive being transferred in container and emission gases etc. multiple.Any one (also optionally comprising other interface) in these ingress interfaces/outlet mouth can be used for these objects.Such as, container can be designed to have autoclave entrance 106, pressure relief valve 108 and the second optional entrance, but also can use other setting, because they are needs for given polymerization technique.Autoclave vessel main body defines therein can the internal-response room 112 of polymerization reaction take place.Especially will attentively for the utility model, polymerisation can be suitable for preparing polymer, such as nylon 6,6, but other polymerisation is also applicable.
Autoclave vessel main body 104 can be any container that can carry out polymerisation therein.Usually suitable container body can comprise closed by autoclave wall and can the internal-response room of pressure-bearing.Although operating condition alterable, autoclave vessel main body can be suitable for the pressure keeping at least 300psia, and is at least 600psia in some cases.Autoclave vessel main body can have outer surface 114 and inner surface 116.Autoclave vessel main body has the mid portion 118 of cylindricality, and it is with domed top part 120 and conical lower portion part 122.Other shape can be used equally.Autoclave vessel main body can be fabricated to single unitary container.As an alternative, autoclave vessel main body also can be formed by multiple part.These parts of autoclave vessel main body can contribute to the production of device, assembling, clean and maintenance.Such as, the conical lower portion part by autoclave vessel main body engages inner heating component 124.Although describe in more detail hereinafter, polymerization autoclave also assembles and takes apart by the securing member removed along flange 126, to allow inner heating component to remove as individual unit.Conveniently and improving SNR, extra feature also can be provided as a part for polymerization autoclave.Such as, locator 127 can be connected with fixed structure piece, to provide mechanical stability for autoclave.
Autoclave vessel main body can be made up of the material being structurally enough to bear desired operating condition.But autoclave vessel main body is typically made up of steel alloy.The not limiting example of suitable steel alloy can comprise carbon alloy steel (such as HII carbon steel, St35.8, P235GH, P265GH, P295GH, P355GH etc.), refractory metal alloy, its compound and its combination.
Table 2-1: carbon alloy steel (surplus is Fe)
* P235GH also requires Cr+Cu+Mo+Ni<0.70%
* P295GH also requires Cr+Cu+Mo<0.70%
In one embodiment, chamber wall can be made up of chrome-moly steel.Suitable chrome-moly steel can include but not limited to 16Mo3,13CrMo4-5, P235GH, P265GH and its combination.In a specific embodiment, chamber wall can be made up of the 16Mo3 showing desired performance over a wide range of operating conditions.Table 2-2 lists the chemical composition of these chrome-moly steels.
Table 2-2: chrome-moly steel (surplus is Fe)
| Alloy | ％C | ％Si | ％Mn | ％P | ％S | ％Mo | ％Cr | ％Ni/％Cu |
| 16Mo3 | 0.12-0.20 | ≤0.35 | 0.40-0.90 | ≤0.03 | ≤0.025 | 0.25-0.35 | ≤0.3 | - |
| 13CrMo | 0.08-0.18 | ≤0.35 | 0.40-1.00 | ≤0.03 | ≤0.025 | 0.40-0.60 | 0.70-1.15 | - |
[0036]
| P235GH | ≤0.16 | ≤0.35 | 0.6-1.2 | ≤0.025 | ≤0.015 | ≤0.08 | ≤0.3 | ≤0.3 |
| P265GH | ≤0.2 | ≤0.4 | 0.5-1.4 | ≤0.03 | ≤0.025 | ≤0.08 | ≤0.3 | - |
* P235GH also has Cr+Cu+Mo+Ni<0.70%
Manufacture autoclave vessel main body 104 according to selected material, polymerization process condition can show corrosivity and destructive condition.Therefore, in the embodiment that some are substituting, autoclave vessel main body can be application chamber, its have basic chamber wall and at least one deck be coated in the coated inside on inner surface.This coat can provide the corrosion resistance of the raising of the corrosion resistance of the material exceeded as base containers wall.Coating wall can represent compromise, usually to realize mechanical strength (it is the feature of base containers wall) and corrosion resistance (it is the feature of coat).Therefore, at least one deck undercoating can be applied on the inner surface of base containers wall.Coating can be and uses known technology, the coating of such as explosive welding (EW) on base containers wall, but other deposition technique may also be applicable.Coating material also can provide corrosion protection to the inner surface contacted with polymerization reactant and product at high temperature and pressure.
Therefore, basic chamber wall can be made up of steel alloy listed above, is made up in optional at one of carbon alloy steel, such as HII carbon steel or St35.8.As an alternative, base containers wall can be made up of chrome-moly steel such as mentioned above.But coated inside can be stainless steel (such as, SS321,314 and 306) etc.The nonlimiting examples of stainless steel 321 alloy can comprise X6CrNiTi18-10, X12CrNiTi8-9 etc.Table 3 lists some stainless chemical compositions be suitable for.
Table 3: stainless steel chemical component
| Alloy | ％C | ％Si | ％Mn | ％P | ％S | ％Cr | ％Ni |
| X6CrNiTi18-10 | ≤0.08 | ≤0.10 | ≤2.0 | ≤0.045 | ≤0.03 | 17.0-19.0 | 9.0-12.0 |
| X12CrNiTi8-9 | ≤0.12 | 18.5 | 9.5 |
* X6CrNiTi18-10 also require Ti% >=5x%C still≤0.8.
The thickness variable of autoclave vessel main body 104.Container thickness can affect the heat transfer rate during temperature transition substantially, and the degree of the thermal expansion that also can change during this temperature transition and contraction.Therefore, container wall thickness can change from about 15mm to about 50mm substantially, and in a lot of situation, can change from about 20mm to 40mm.When coating container, base containers wall can have the thickness from 20mm to 28mm usually, and coating can comprise the signal layer coating with 1.5mm to 5mm thickness.In one embodiment, chamber wall can be the thick carbon steel (HII) of the 24mm of the coated inside of the stainless steel 321 with 3mm.
In one aspect, conical lower portion part 122 can have the wall thickness of the wall thickness being greater than cylindrical middle part part 118.Such as, the thickness of conical lower portion part can be wall thickness than cylindrical middle part part larger about 10% to 40%.
Various interface, entrance and exit can have been manufactured in autoclave vessel main body 104.These features can be provided for controlling that charging, product shift out, Stress control, discharge, introducing additive, introduce interim polymerization reactant, temp probe, pressure probe, clean and video feed etc.Although can be any one in these objects by inlet configuration, autoclave entrance 106 can be arranged through autoclave vessel main body, and polymerization reactant can be introduced in internal-response room 112.Typically, autoclave entrance can be enough wide, to allow to introduce reactant fast to reduce the filling time.Although can use any suitable inlet diameter, autoclave entrance has the diameter from 1 inch to 4 inches usually, and is about 3 inches in a lot of situation.
In technical process, often need to control the pressure in internal-response room 112.One easily method be packing material and regulate the rate of heat addition, simultaneously optionally releasable material to reduce pressure.Such as, packing material can cause pressure to increase.Similarly, during technique, the pressure that the heating of polymerization reactant and material also can cause being in the vapor space above liquid reactant, solid and the free-flowing material that is polymerized increases.Along with pressure raises, suitable mechanism can be used to be remained in desired target zone by pressure.Such as, during technique, pressure can change from about 0psi to about 300psi.The high pressure cycle can have the upper limit around 280psi usually.Similarly, the stage of extruding generally includes the high pressure from about 100psi to 200psi, and is generally about 125psi.
Therefore, pressure relief valve 108 can with internal-response room 112 fluidic communication.More particularly, pressure relief valve also optionally can discharge the steam of the vapor space from internal-response room, and is usually arranged in the domed top part 120 of autoclave vessel main body 104.Pressure relief valve can be flange pipe; But any suitable pressure relief valve can be connected with flange operability.Pressure relief valve usually can be and can regulate, with in each polymerization technique cycle internally reative cell the pressure of change is provided.This pressure relief valve that can regulate is connected with pressure control module, operably to carry out Long-distance Control pressure condition together with the condition of other monitor and forecast.
Alternatively, the second entrance 128 can be arranged in domed top part.Additive, interim polymerization reactant or other components is added during this second entrance is used in technique.The not limiting example of additive can comprise coloring agent, ultra-violet stabilizer, plasticizer, crosslinking agent, antiseptic, fiber, technique auxiliary material, fire retardant and biodegradability reinforcing agent etc.Optionally, the inner end of entrance that can be described here arranges spray nozzle.Typically, entrance material being incorporated into internal-response room 112 can stop away from inner wall surface 116 certain distance.Therefore, in order to be more uniformly distributed to by material in internal-response room, nozzle can be used to increase and to control discrete form.
Polymerization technique can comprise the reaction temperature carefully controlled in internal-response room 112 usually.This temperature controls to realize by external heat and the heating of optional inside.As shown in Figure 1, external heating kit 102 can comprise the heating duct 110 be coiled in around autoclave vessel main body 104.Outer surface 114 can comprise expose portion and heat trnasfer part.Particularly, heating duct directly can divide with the heat transmitting member of outer surface and is connected.On the contrary, the expose portion of outer surface does not have heating arrangements, and is exposed in surrounding environment.Heating duct has multiple coiling body around autoclave vessel main body, makes to add hot fluid capable of circulation through heating duct, heat is delivered to internal-response room through heat trnasfer part.The variable amountsization of coiling body is very large, but is usually greater than 10, and reaches 20 or more than 20 in certain situation.According to specific structure, external heating kit can cover the heat trnasfer part of outer surface.Although the variable degrees covered, external heating kit can cover 30% to 80% of outer surface, is 5% to 70% in some cases, and is generally 40% to 70% of outer surface.For surface coverage, in these percentages, include the gap between the winding body in heating duct, this be due to described gap cover by external heating kit.
Each coiling body typically has little gap, and outer surface 114 is exposed between the continuous coiling body of heating duct 110.This gap is normally limited, and to improve heat to the transmission in autoclave, but described gap is restricted to 50% (and being less than 20% in a lot of situation) of the width being not more than heating duct around usually.Heating duct also can have multiple shape of cross section, such as but not limited to halfpipe, whole tubular, U-type groove shape, V-type channel-shaped etc.In an aspect, heating duct can have semi-tubular shape of cross section.Be as an alternative, heating duct can have overlapping cross section, here an edge joint weld is received on the outer surface of autoclave vessel main body, the edge joint weld of opposite side is received the adjacent disc of heating duct simultaneously in the suspension part (i.e. outer surface) of body.Like this, the edge that only has of heating duct is soldered directly on outer surface.As a result, the edge of opposite side suspends the outer surface away from autoclave vessel main body, the temperature contrast between the tour making to reduce operating condition in polymerization technique.Do not consider specific structure, heating duct typically can have unified shape of cross section along the whole length be connected with outer surface of heating duct.
The size of heating duct 110 is also the long-time reliability of external heating kit 102 and a factor of performance.Such as, the wall thickness of conduit can change, and is usually less than container wall thickness.The corresponding wall thickness of heating duct also can affect the degree of the stress being delivered to heating coil body during variations in temperature.Heating duct wall thickness is less than about 25mm usually.In one embodiment, heating duct wall thickness can, at about 3mm to about 6mm, be 4mm in a specific examples.Similarly, container wall thickness can affect performance with the ratio of catheter wall thickness.As rule substantially, container wall thickness can be 2: 1 to 15: 1 with the ratio of catheter wall thickness, and is 5: 1 to 9: 1 in some cases.
Heating duct thickness can affect the stress in welding, and passes to the heat waste of surrounding environment.But the external width of heating duct 110 also can determine the coverage rate for heat trnasfer object of outer surface 114.In addition, the shape of cross section of heating duct also can determine the pattern adding hot fluid in conduit.Although the height of heating duct (that is, the vertical range of the end section from outer surface to heating duct) can allow larger heating fluid volume, too high height can cause the heating fluid volume demand of undesirable hot-fluid and raising.Similarly, the external width (that is, adding the width of the contact area of hot fluid and outer surface) of increase can increase effective heat transfer surface.In addition, reduction can cause less pad and potential trouble point with the quantity of the contact point of outer surface.On the contrary, wide conduit can cause hot-fluid pattern heterogeneous.No matter these, the external width of heating duct can marked change, such as, from about 50mm to about 100mm.
In an aspect, heating duct 110 can form an entirety with the chuck room at least partially of the heat trnasfer part of the outer surface 114 of encirclement autoclave vessel main body 104 or be its part.This chuck room optionally comprises guiding and adds Internal baffle or the wall that hot fluid flows through the part of outer surface.Different baffle plates can be used to arrange, but structure that is complicated and/or multiple baffle plate can cause excessive pressure head.The pressure of this increase in heating component can increase the probability, the demand to hyperbaric heating fluid pump that cause heating component internal fault, or increases running cost.
Heating duct 110 can be made up of the material that can operate at the temperature of at least 350 DEG C with the heating-cooling cycle repeated.Especially paying close attention to ground is make heating duct by chrome-moly steel.The not limiting example of the chrome-moly steel be suitable for comprises 16Mo3,13CrMo4-5, P235GH, P265GH and it combines.Table 4 lists the chemical composition of these chrome-moly steels.
Table 4: chrome-moly steel (surplus is Fe)
* P235GH also has Cr+Cu+Mo+Ni<0.7
In an aspect, heating duct 110 by from autoclave vessel main body 104 and particularly different with outer surface 114 steel alloys make.But, in a particular aspects, heating duct can by with manufacture autoclave vessel main body, steel alloy that particularly steel alloy of outer surface is identical makes.
Typically, high temperature solder alloy can be used to be welded on the outer surface 114 of autoclave vessel main body 104 by external heating kit 102.The not limiting example of suitable welding alloy can comprise Mn-Mo alloy, W2Mo, G46AMG4MO, EMoB32H5, AG42, W425W2Si or its combination.In an aspect, welding alloy can be AG42.In one aspect of the method, welding alloy can be W2Mo.Commercially available welding alloy applicatory comprises solder, such as but not limited to
or
External heating kit 102 is welded on outer surface 114 and can produces the closed heating circuit of heating fluid circumvents in recirculation heating system.Such as, external heating kit can comprise the external heat entrance 130 introduced and add hot fluid.Along with adding hot fluid around autoclave vessel main body 104 circulation, heat can be delivered in internal-response room 112, and making to add hot fluid can cool in the upper part of heating duct.Therefore, heating duct can have the external heat outlet 132 making to heat fluid re-circulation and be heated.
Any amount of solder technology can be used to be welded on outer surface 114 by external heating kit 102.The not limiting example of solder technology comprises Gas-Tungsten-Arc weldering (GTAW), shielded metal arc welding (SMAW) gas metal arc welding (GMAW) etc.The overlap set up in welding point skew weld deposit can be used for enhancing and be welded to connect intensity.In addition, be welded to connect can be and entirely permeate weldering (namely welding different from spot welding or partial penetration).As a reference, the root gap of welding point can be 1mm to 5mm, although other gap is also applicable.
By the combination of the selection of the thickness of material, heating duct, container wall thickness and welding alloy material, heating duct can be connected to the heat trnasfer part of outer surface 114, be greater than 80 DEG C to avoid substantially stemming from, the low cycle facigue of repeated Periodic Temperature difference that is greater than 100 DEG C in some cases damages.
Multiplely add hot fluid although can use, non-limiting example comprises
(the proprietary mixture of hydrogenated terphenyl, partial hydrogenation quaterphenyl and senior polyphenyl and terphenyl),
(mixture of biphenyl and diphenyl ether) with and composition thereof.Suitable add hot fluid and can operate at 330 DEG C to 340 DEG C, and the vapour pressure being less than 100psi can be had.
Turn back to Fig. 1, polymerization autoclave 100 can comprise the inside heating component 124 containing inner heat manifold.Such as, inner heat manifold can comprise the taper storage unit 134 with entrance 136.Taper storage unit can be contained in the conical lower portion part 122 being connected on container body at flange 126 place of autoclave.Inner heat manifold also can comprise the heating tube 138 that one or more equal fluid-type is connected with taper storage unit.Heating tube can be connected with public outlet 140, adds the recirculation of hot fluid for cooled and/or heat.In addition, heating tube can be vertical setting, and parallel to each other substantially.In addition, heating tube can be arranged in the lower area of internal-response room 112, to form the annular-heating manifold axially arranged.Optional upper body 142 can be provided, with at internal-response indoor more uniformly heat dispersing.Shown upper body has annular shape and the square cross section with ogival.
Inner heating tube can by making by any material of operation at up at least 350 DEG C and in some cases up to about 400 DEG C.The not limiting example of material be suitable for can comprise those material, stainless steels etc. for autoclave vessel wall and external heat conduit of listing above.In substituting at one, inner heating tube can be made up of stainless steel.Stainless not limiting example comprises stainless steel 304,316 and 321.
Inner heating component 124 can monoblock type with can be used as a unit and the part of conical lower portion part 122 that is removed is connected.This split type autoclave vessel main body can facilitate the production of device, assembling, clean or maintenance.In addition, conical lower portion part 122 comprises autoclave outlet 144, and described autoclave outlet allows from internal-response room 112, to shift out product to be further processed (such as, extrude, reel off raw silk from cocoons into fiber, molding etc.).By improving pressure in internal-response room 112 and optionally raising temperature and extruding, to reduce the viscosity of polymer product.
In another alternative, polymerization autoclave 100 can be the stirred autoclave including internal mixer (not shown).Internal mixer can typically be arranged along the center line of internal-response room 112 vertically.Internal mixer can allow the uniformity improving polymeric reaction condition, and reduces polymerization reaction time.In this case, inner heating component 124 can be omitted, maybe inner heating component can be re-constructed the gap for being provided for operating internal mixer.
Polymerization autoclave and structure as described herein can provide effective heat trnasfer, also minimize simultaneously or eliminate the probability of low cycle facigue.As a result, the polymerization autoclave combining these features can provide the service life of increase, higher reliability and evenly heat distribution.
Although describe the utility model with language specific for architectural feature and/or operation, be that the utility model be limited by the accompanying claims is not limited to specific characteristic sum operation as described above with it should be understood that.But above-described special characteristic and action are disclosed as the exemplary form implemented the claims.Multiple improvement and substituting setting can be carried out and do not depart from the spirit and scope of described technology.
Claims (21)
1. there is a polymerization autoclave for external heating kit, comprising:
Define the autoclave vessel main body of internal-response room, described autoclave vessel main body has outer surface with heat trnasfer part and inner surface, and described autoclave vessel main body is made up of steel alloy and is had container wall thickness;
Autoclave entrance, it is arranged through described autoclave vessel main body, and polymerization reactant can be introduced internal-response room;
Pressure relief valve, itself and internal-response room fluidic communication, and can optionally steam be discharged from described internal-response room; And
Be wound around and the heating duct be attached thereto around described heat trnasfer part, described heating duct has multiple coiling body around autoclave vessel main body, make to add hot fluid and can be circulated through described heating duct, heat is delivered to described internal-response room through described heat trnasfer part, described heating duct has heating duct wall thickness and is made up of chrome-moly steel.
2. polymerization autoclave according to claim 1, is characterized in that, described autoclave vessel main body be have basic chamber wall and at least one deck be coated in the coating cavity of the coated inside on inner surface.
3. polymerization autoclave according to claim 2, is characterized in that, described basic chamber wall is made up of carbon steel, and at least one deck coated inside is made up of stainless steel.
4. polymerization autoclave according to claim 2, is characterized in that, described basic chamber wall has the thickness from 20mm to 28mm, and at least one deck coated inside comprises the signal layer coating of the thickness with 1.5mm to 5mm.
5. polymerization autoclave according to claim 1, is characterized in that, described autoclave vessel main body is also made up of chrome-moly steel.
6. polymerization autoclave according to claim 5, is characterized in that, the chrome-moly steel of described heating duct is identical material with described autoclave vessel main body.
7. polymerization autoclave according to claim 1, is characterized in that, described autoclave entrance is arranged in the top section of described autoclave vessel main body.
8. polymerization autoclave according to claim 1, is characterized in that, the heat trnasfer part of described outer surface covers 40% to 70% of outer surface.
9. polymerization autoclave according to claim 1, is characterized in that, described heating duct is the semicanal be directly welded in by welding alloy on the outer surface of described autoclave.
10. polymerization autoclave according to claim 9, is characterized in that, described welding alloy is formed as entirely permeating welding.
11. polymerization autoclaves according to claim 1, is characterized in that, described heating duct has the outer width from 50mm to 100mm.
12. polymerization autoclaves according to claim 1, is characterized in that, described heating duct wall thickness is from 3mm to 6mm.
13. polymerization autoclaves according to claim 1, is characterized in that, the thickness of described autoclave vessel main body is from 20mm to 40mm.
14. polymerization autoclaves according to claim 1, is characterized in that, described container wall thickness is from 5: 1 to 9: 1 with the ratio of described catheter wall thickness.
15. polymerization autoclaves according to claim 1, is characterized in that, described heating duct wall thickness is less than described container wall thickness.
16. polymerization autoclaves according to claim 1, is characterized in that, the low portion of described autoclave vessel main body has the lower part wall thickness larger than the container wall thickness in the upper part of described autoclave vessel main body.
17. polymerization autoclaves according to claim 1, is characterized in that, also comprise the inside heating component in the lower area being arranged on described internal-response room.
18. polymerization autoclaves according to claim 1, is characterized in that, also comprise taper storage unit.
19. polymerization autoclaves according to claim 18, is characterized in that, also comprise flange taper storage unit be connected with autoclave vessel main body.
20. polymerization autoclaves according to claim 1, is characterized in that, also comprise inner heat manifold.
21. polymerization autoclaves according to claim 17, is characterized in that, described inner heating component comprises the heating tube be made up of stainless steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361817998P | 2013-05-01 | 2013-05-01 | |
| US61/817,998 | 2013-05-01 |
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|---|---|
| CN204134603U true CN204134603U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172718.4U Expired - Lifetime CN204134603U (en) | 2013-05-01 | 2014-04-10 | There is the polymerization autoclave of external heating kit |
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| CN (1) | CN204134603U (en) |
| TW (1) | TWM501894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128127A (en) * | 2013-05-01 | 2014-11-05 | 英威达科技公司 | Jacketed autoclave device |
-
2014
- 2014-04-10 CN CN201420172718.4U patent/CN204134603U/en not_active Expired - Lifetime
- 2014-04-10 TW TW103206180U patent/TWM501894U/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128127A (en) * | 2013-05-01 | 2014-11-05 | 英威达科技公司 | Jacketed autoclave device |
| CN113648931A (en) * | 2013-05-01 | 2021-11-16 | 英威达纺织（英国）有限公司 | Jacketed autoclave device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM501894U (en) | 2015-06-01 |
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