CN103170298A - Esterification reactor - Google Patents
Esterification reactor Download PDFInfo
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- CN103170298A CN103170298A CN2013100939585A CN201310093958A CN103170298A CN 103170298 A CN103170298 A CN 103170298A CN 2013100939585 A CN2013100939585 A CN 2013100939585A CN 201310093958 A CN201310093958 A CN 201310093958A CN 103170298 A CN103170298 A CN 103170298A
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Abstract
The invention relates to an esterification reactor, comprising a reactor barrel, and a heating device and a top stirrer which are arranged in the reactor barrel, wherein the top stirrer is provided with a main spindle, a stirrer driving device is connected to the upper end of the main spindle, the reactor barrel is formed by an upper end enclosure, a middle barrel body and a lower end enclosure which are connected with one another in sequence by flanges with slot structures, all the slot structures are processed by a large vertical lathe, the heating device comprises a plurality of vertical heating barrels which are connected with an evaporator by corresponding inlet and outlet guide pipes, and the heating barrels, the guide pipes and the evaporator form a vacuum system with unpowered circulation of heating mediums. The esterification reactor is suitable for a current large equipment processing technology, the coaxiality of the internal parts is high, and the esterification reactor has a simple and reasonable structure and is convenient to transport, install and maintain, so that an ultra-large esterification reactor becomes possible.
Description
Technical field
The present invention relates to a kind of esterifier, can be used for the esterification in the production technology such as ethylene glycol terephthalate (BHET), belong to chemical technology field.
Background technology
In production of polyester, adopt ethylene glycol (EG) and terephthalic acid (TPA) (PTA) to carry out esterification and generate ethylene glycol terephthalate (BHET), then synthesizing PETG by polycondensation reaction is polyester (PET), the esterification device of BHET often adopts two-stage equipment, the first order is mainly to control for reaction rate, the second level is mainly used in completing of esterification, esterification yield reaches the demand of polymerization technique, and esterifier of the present invention can be used for two esterification devices simultaneously.
existing esterifier has several different types, wherein interior circulating esterification reaction device is a kind of esterification device commonly used in polyester process, be provided with agitator in this reactor and be used for coil pipe or tubulation bundle and the guide shell of interior heating, to form the circulation up and down of material, strengthen heat transfer coefficient, obtain/keep reaction temperature, improve the speed of esterification, satisfy the needs of esterification, described agitator can adopt the dress formula, the drive unit of agitator is arranged on the top of reactor usually, drive with the upper end of agitator main shaft and be connected, the work of drive agitator.
Maximization along with the polyester engineering, the volume of esterifier is increasing, large reactor has not only reduced the cost of reactor operation, and provide highly stable course of reaction, but proposed new problem also for manufacturing and the transportation of reactor: for example, the excessive dimensional threshold that may exceed ordinary highway, railway transportation of reactor; The reactant that holds increases, and the demand of reaction institute calorific requirement is significantly increased, and how to make to add the huge coil pipe of heat and how to provide in other words a large amount of heat to satisfy the reaction requirement; And the stable operation that how to guarantee agitator, how to suppress to become because of agitator linear dimension the technical bottleneck that uneven disturbance that the rigidity variation may cause greatly and reactant vigorous reaction cause etc. becomes the above-mentioned esterifier large of restriction.Before the present invention, volume is up to 200 m
3300m even
3Esterifier still belong to the market vacancy.
Summary of the invention
For overcoming the defects of prior art, the invention provides a kind of esterifier, this esterifier is adapted to present main equipment process technology, is convenient to installation and maintenance, agitator is stable, thereby provides possibility for the large of esterifier.
The present invention realizes that the technical scheme that above-mentioned purpose adopts is:
A kind of esterifier, comprise reactor shell and be arranged at described reactor shell interior heater and upper dress formula agitator, described upper dress formula agitator is provided with main shaft, the upper end of described main shaft connects stirrer drive, described reactor shell is connected in sequence by upper cover, middle cylindrical shell and low head, and between described upper cover, middle cylindrical shell and low head, interconnective mode is for using the flange of donsole structure to connect by being provided with the location.
Usually, the top of described reactor shell is equipped with main shaft bearing, and is rotatably connected with described main shaft by described main shaft bearing.
Usually, in the middle of described, cylindrical shell can be integrated, also can adopt by some cylinder sections and interconnect the Split type structure that forms, the interconnective mode of described some cylinder sections is for using the flange of donsole structure to connect by being provided with the location, middle cylindrical shell is arranged to some cylinder sections, thus the length (highly) of each cylinder section can be set according to the requirement of the each side such as transportation, with convenient transportation and on-the-spot the installation, avoid the transportation that brings because equipment volume is excessive and difficulty is installed.
After being welded on cylinder section, adopt flange large-scale vertical lathe to process described each donsole structure, guaranteed the machining accuracy of each several part after the large by machining rather than traditional round as a ball, rivet welding mode, further guaranteed each cylinder section with and axiality the same, low head, for the maximization of reactor provides real feasible implementation method.
Described upper cover is provided be used to the agitator flange that described agitator is installed, and can realize by easy flange connection the installation of agitator main shaft thus, and be convenient to install the location.
Described agitator flange is as the processing of described esterifier, the design basis of assembling, and when being also simultaneously described agitator assembling, the first benchmark of centering, adopt same benchmark to be conducive to guarantee required axiality, and be convenient to installment and debugging.
Required reaction temperature in described reactor can be realized and keep to described upper cover, middle cylindrical shell and low head all can with the heating agent chuck, by pass into heating agent or heating agent stream in described heating agent chuck, easily.
Described heater preferably adopts some vertical cartridge heaters, described cartridge heater is by connecting described evaporimeter into and out of conduit accordingly, described evaporimeter is positioned at the outside of described reactor shell, the side-lower of described cartridge heater, and described cartridge heater, conduit and evaporimeter consist of unpowered circulation heating agent vacuum system.
the horizontal cross-section of each described cartridge heater is approximate fan annular, described some cartridge heaters are divided into a plurality of groups, cartridge heater in each group is evenly spaced apart on same circumference, on the same group cartridge heater is not distributed on coaxial different circumference, radially leave the interval between the two adjacent groups cartridge heater, being used for reactant flows therein, each described cartridge heater is mainly by the cartridge heater inner barrel, the cartridge heater outer cylinder body, upper plate and lower plate form, in described cartridge heater, the setting of outer cylinder body coaxial spaced also interconnects the tubular that surrounds up/down perforation, on described, lower plate is arranged on respectively in described cartridge heater, the upper surface of outer cylinder body and lower surface, in described cartridge heater, outer cylinder body and upper, the separate space formation heating agent heat release space that lower plate surrounds.
The lower end of described cartridge heater preferably is provided with damping, described damping preferably includes the helical spring that damping is used, described helical spring upper end is connected with the lower end of described cartridge heater, described helical spring lower end is arranged on the cartridge heater mounting bracket, described cartridge heater mounting bracket is fixedly mounted in described reactor shell, reaches thus the purpose of damping by helical spring characteristic.
Adjustable base bearing device preferably is installed in described reactor shell, described adjustable base bearing device can comprise spherical bearing, axle sleeve, bearing block and a plurality of radially different directions along described spherical bearing that is connected in described bearing block extends and coplanar being used for adjusted the bearing of described spherical bearing horizontal level to medium-height trestle, the inner ring fixed cover of described spherical bearing is located on described axle sleeve, the outer ring is fixedly mounted in a hole of described bearing block, and described axle sleeve is fixedly mounted on the lower end of described main shaft.
preferred each described bearing comprises lockset screw-button and column to medium-height trestle, described lockset screw-button is comprised of a plurality of connectors, be provided with for the thread mechanism of regulating length and the vertical rotating shaft connection that is connected regulating direction, the quantity that described vertical rotating shaft connects is one or more, and be provided with or be not provided with the connection locking device, one end of described lockset screw-button is used for installing described bearing block, the other end is fixedly connected on described column, the lower end of described column is fixedly mounted on described low head, be provided with backing plate between described column and described low head or be not provided with backing plate, thus by the turn nut, regulate the position of nut on screw rod in described thread mechanism, just can regulate the length of described lockset screw-button, and then regulate the radial position of main shaft lower end.
The invention has the beneficial effects as follows: due to the present invention, reactor shell is arranged to the part of some independent processing, facilitated the processing of reactor shell, reduced technology difficulty and to the requirement of process equipment, present process technology and condition have been adapted to, eliminated because being subjected to the manufacturing process restriction can't realize the technical bottleneck of esterifier large, made the large of esterifier become possibility; All connect by flange between each part due to anabolic reaction device cylindrical shell, and be provided with the donsole structure for the location on flange, and the machining accuracy that guarantees donsole by the machining mode, when having facilitated the scene installation and removal of reactor, guaranteeing the centering reliability between them, guaranteed that easily the reactor monolith after the assembling meets designing requirement thus; All take described agitator flange as the first benchmark, guaranteed the centering effect of each several part during due to design, processing and assembling, be conducive in the situation that the reactor large realizes required precision; Owing to adopting unpowered circulation heating agent vacuum system, heating agent carry out " liquid phase → gas phase → liquid phase " and iterative cycles, material in esterifier is heated, the liquid phase that the existence of gas-phase potential heat is compared when adopting coil pipe is before this conducted heat, heat transfer coefficient is high, and the thermal efficiency significantly improves, and it is less to transmit the required heating surface (area) (HS of identical heat, not only reduce operating cost, also significantly reduced to arrange heater required space; Due to the cartridge heater and the specific arrangement mode that adopt ad hoc structure, not only reduced the quantity of cartridge heater, save the radial space in reactor, also make installation, detect and safeguard convenient, can force especially reaction mass to flow reposefully up and down therein on mass transfer, can avoid taking away at the dead angle that regional area forms and the reactant that in time will be bonded on the cartridge heater outer wall because of flow velocity difference.
Description of drawings
Fig. 1 is the structural representation of the esterifier that the present invention relates to;
Fig. 2 is the principle schematic of the unpowered circulation heating agent vacuum system that the present invention relates to;
Fig. 3 is the cartridge heater that the present invention relates to and the structural representation of damping thereof;
Fig. 4 is the structural representation of the adjustable base bearing device that the present invention relates to;
Fig. 5 is the schematic diagram that the flange that is provided with the donsole structure that the present invention relates to connects.
The specific embodiment
referring to Fig. 1-5, the purpose of this invention is to provide a kind of large esterification device that is applicable in the polyesters device, belong to interior circulating esterification reaction device, comprise reactor shell and the heater and the upper dress formula agitator 3 that are arranged at described reactor cylinder intracoelomic cavity 10, described upper dress formula agitator is provided with main shaft 2, the top of described reactor shell (upper cover) is provided with agitator flange 11, described agitator is arranged on described reactor shell by described agitator flange, the upper end of described main shaft connects stirrer drive 12, and by corresponding main shaft bearing and realization being rotatably connected with described reactor shell.
Described reactor shell is connected in sequence by upper cover 1, middle cylindrical shell 9 and low head 6, and between described upper cover, middle cylindrical shell and low head, interconnective mode is for connecting by the flange 7 that is provided with the donsole structure.The each several part that forms described reactor shell all adopts the high stiffness structure of machined interface, can be in the situation that reactor shell segmental machining (each section is called a cylinder section) be guaranteed the required axiality of whole reactor, can manufacture large diameter reactor thus, the main shaft lower end of agitator arranges adjustable bearing, to regulate the main shaft lower end in the position of horizontal plane, guarantee the axiality suitable for reading with agitator.
Referring to Fig. 1 and the described flange that is provided with the donsole structure shown in Figure 5, first utilize up and down two flanges 7.1,7.2 upper Tenon donsole structure location during installation, fasten up and down part (for example upper cover and the middle cylindrical shell at two flange places, perhaps two neighbouring cylinder sections), utilize thread connector that two parts in up and down are fixed together, then realize two sealings between part by reservation bevel for welding place's welding of both sides inside and outside the flange of docking mutually.Wherein the angle a1 of outside bevel for welding preferably is 70 about degree (for example 65-75 degree), and its two limits equate with horizontal angle, and the angle a2 of inboard bevel for welding preferably is about 30 degree (for example 27-33 degree), and the following of its bevel for welding is level.Through the practice, for volume up to 200 m
3300m even
3Esterifier, adopt the welding manner of this divided edge structure not only to be convenient to weld job, the welding difficulty is low, and weld strength, sealing effectiveness and reliability etc. obviously are better than general welding manner, welding quality is easily controlled, check and examination are continued to use existing conventional method and are got final product, and not only significantly shorten the manufacturing cycle and have also reduced manufacturing cost simultaneously.Owing to having adopted the flange threaded connection mode, realized each section neutralization is located before welding, can not cause because of weld job displacement and the deformation of associated part, then play sealing function and further guarantee bonding strength by welding, compare dependence rivet welding that existing esterifier adopts and realize the mode that connects, belong to non-powerful welding, welding deformation is little.
During with the heating agent chuck, usually adopt double-decker when the each several part of described cylindrical shell, be formed for holding the space of heating agent or the flow channel of heating agent between internal layer 18 and outer 19.In this case, usually flange can be connected with being connected with corresponding internal layer simultaneously, to improve the bonding strength between interconnective each several part and to seal gap between inside and outside layer, realize jacket structured sealing.
Referring to Fig. 1 and Fig. 2, described heater adopts some vertical cartridge heaters 8, described cartridge heater is connected to same evaporimeter 14 by separately corresponding into and out of conduit 13,15, described evaporimeter is positioned at the outside of described reactor shell, the side-lower of described cartridge heater, and described cartridge heater, conduit and evaporimeter consist of unpowered circulation heating agent vacuum system.Compare coil pipe, adopt vertical cartridge heater can be easily flexible arrangement as required, and save the space.First carry out system after described cartridge heater, conduit and evaporimeter assembling and vacuumize, the on-condensible gas in removal system, and keep this system to be in vacuum state under normal operating condition.Heating agent is heated in evaporimeter and is transformed into dry flue gas, upwards enter each cartridge heater that is positioned at reactor shell along conduit, with be condensed into liquid phase after the outer reaction mass heat exchange of cartridge heater cylindrical shell, reflux under Action of Gravity Field, draw back evaporimeter by following conduit, heating agent by liquid phase → gas phase → liquid phase iterative cycles, heats the material in esterifier like this.
The present invention adopts above-mentioned unpowered circulation heating agent vacuum system to replace traditional coil pipe or tubulation, bring the effect of having a mind to of following many aspects: 1, adopt first the gas phase heat transfer means in esterifier, because the liquid phase that the existence of gas-phase potential heat is compared when adopting coil pipe is before this conducted heat, heat transfer coefficient is high, the thermal efficiency significantly improves, and it is less to transmit the required heating surface (area) (HS of identical heat, has not only reduced operating cost, has also significantly reduced to arrange heater required space; 2, gas phase, liquid phase rely on the spontaneous direction along separately of density contrast to circulate, mutually noninterfere between two-phase, and heat transmission resistance is little, need not to be equipped with in addition power set, reduces operating cost; 3, cartridge heater and evaporimeter can freely configure according to needs separately, and heat-transfer capability is no maximum in theory, for the reaction temperature that satisfies large-scale esterifier requires to provide real feasible basic condition; 4, each heating tube is equivalent to an independently heating unit, and flexible configuration is installed and change very convenient.
In the present embodiment, the horizontal cross-section of each described cartridge heater is approximate fan annular, described some vertical cartridge heaters are divided into a plurality of groups (as 4-6), cartridge heater in each group is evenly spaced apart on same circumference, on the same group cartridge heater is not distributed on coaxial different circumference, radially leave the interval between the two adjacent groups cartridge heater, as the passage of forcing reactant vertically to flow.The coil pipe of the employing of comparing over, in the situation that take same space, the heat exchange area of cartridge heater of the present invention significantly improves.
Need for improving the uniformity that reaction mass heats up, each cartridge heater in group can with adjacent sets in each cartridge heater positioned opposite, (namely the cartridge heater in group is relative with the interval between the interior cartridge heater of adjacent sets) also can be staggeredly arranged.And, adopt the cartridge heater of said structure, compare the cylindrical shell of circular cross-section, not only can reduce the quantity of cartridge heater, save the radial space in reactor, also conveniently install, detect and safeguard; Adopt cartridge heater and the distribution mode thereof of this structure, can force reaction mass to flow reposefully up and down therein, compare thus and adopt the circular cross-section cartridge heater can avoid in time the reactant that is bonded on the cartridge heater outer wall to be taken away simultaneously because of the dead angle of flow velocity difference in regional area formation.As seen, above-mentioned cartridge heater disclosed in this invention and arrangement mode thereof provide excellent alternative heating technique means for large-scale, ultra-large type esterifier.
Described cartridge heater mainly is comprised of cartridge heater inner barrel, cartridge heater outer cylinder body, upper plate, lower plate and reinforcing ring etc., the inside and outside cylindrical shell coaxial spaced setting of described cartridge heater also interconnects the tubular that surrounds up/down perforation, described upper and lower plate is arranged on respectively upper surface and the lower surface of the inside and outside cylindrical shell of described cartridge heater, the separate space formation heating agent heat release space that the inside and outside cylindrical shell of described cartridge heater and upper and lower plate surround.Described upper plate is provided with lifting and uses eye bolt, so that Assembling.All cartridge heaters can adopt a kind of unified specification, can exchange each other, and it is convenient to change when safeguarding.Upper plate and lower plate in same group can be fixedly connected into respectively an integral body, namely replace all upper plates and all lower plates of one group with a top ring and a lower loop respectively, upper and lower plate can be the eccentric circular ring identical with the cartridge heater horizontal cross-section, upper and lower end ring can be that to be provided with the flow outline of passage of reaction mass on position between corresponding cartridge heater be a whole plate of whole annulus, in this case, cartridge heater also can be installed take group as unit and change.
Described reinforcing ring can be the approximate fan annular ring identical with cartridge heater horizontal cross-sectional profile cardinal principle, a cartridge heater can be joined one or more reinforcing rings, during installation, reinforcing ring is enclosed within the outside of cartridge heater, and reinforcing ring directly or indirectly is fixedly connected on the reactor tank body.When reinforcing ring is one, be arranged on the position of the top end of cartridge heater, coordinate the installation of reinforcing cartridge heater with the mounting bracket of cartridge heater, when reinforcing ring when being a plurality of, separately be arranged on cartridge heater upper, middle and lower a plurality of positions.Due to reaction mass steep temperature rise in course of reaction, often with boiling phenomenon, adopt described reinforcing ring to provide good support and reinforcement for cartridge heater, make it keep higher rigidity, avoid causing because of the disturbance of reaction mass the vibration of cartridge heater, therefore can effectively keep cartridge heater to be in stably and lastingly initial setting position, thereby keep mutual design gaps, guarantee the uniformity of heat transfer, further guarantee the quality of product.Enhanced heat transfer surfaces can be adopted in inside and outside cylindrical shell steel plate two sides, to improve heat-conducting effect.
Reinforcing ring also can adopt any other the feasible technological means under prior art to realize.
For guaranteeing three axialities between each internals (guide shell, cartridge heater and agitator), the present invention adopts following structure or technique:
(1) division system is made reactor shell, generally be divided into upper cover, low head and middle cylindrical shell (middle cylindrical shell only has one section, also can be further divided into a plurality of cylinder sections), the height of each section should be convenient to highway transportation, every section is equipped with flange form donsole structure, as the benchmark of processing separately and measuring.Whole reactor shell with the corresponding key element of agitator flange as design basis, the site error that will guarantee when by designing and calculating, the morpheme error of whole reactor shell being decomposed into two sections that the morpheme error of each section that forms it and assembling join, wherein the morpheme error of each section guarantees by machining (being preferably vertical lathe fine finishining donsole), just can easily reach the designing requirement of whole reactor after the assembling like this, the designing requirement here mainly refer to organize to the time centering, i.e. axiality between theoretical coaxial each key element on each part.
Adopt above-mentioned segmentation cylindrical shell and guarantee the mode of designing requirement separately by machining, round as a ball, the cylindrical shell that the rivet welding mode is intrinsic that has overcome effectively that the traditional fabrication cylindrical shell adopts large, the group of circle, deviation to problems such as difficulties, has solved to limit because of technique under the traditional approach and almost can't process the problem that arrives greatly the reactor shell of certain specification.
(2) guide shell and cartridge heater utilization are arranged on the centring ring maintenance of low head and the axiality of flange donsole.
(3) adopt adjustable base bearing device 4, this device can comprise that the radially different directions along described spherical bearing that spherical bearing 4.5, axle sleeve 4.1, bearing block and a plurality of (in the present embodiment being 3) are connected in described bearing block extends and coplanar being used for adjusted the bearing of described spherical bearing horizontal level to medium-height trestle, the inner ring fixed cover of described spherical bearing is located on described axle sleeve, the outer ring is fixedly mounted in a hole of described bearing block, and described axle sleeve is fixedly mounted on described main shaft near lower end.
For the large-scale esterifier of the present embodiment, the height of agitator can up to more than eight or nine meters, even if little by little misaligning of main shaft can cause the significantly runout of agitator, affect the uniformity of mass transfer, and then affect product quality.Adopt adjustable base bearing device that the axis of agitator is positioned on ideal axis, also can be described as the axis that makes agitator coaxial with the central axis of agitator flange, to reduce the amount of radially wobbling of agitator, reduce its rotational resistance, improve the life-span of agitator.
Described bearing comprises lockset screw-button and column 4.4 to medium-height trestle, and described lockset screw-button is comprised of the thread mechanism and the bearing pin 4.6 that are used for adjusting length.Described thread mechanism comprises screw-casing, the left and right screw rod 4.7 of the U-shaped that mutually spins and nut, for example, can be provided with two relative U-shaped screw rods, the rotation direction of described two screw rods is opposite, both ends of the surface are set are provided with the screw-casing 4.2 supporting with respective threaded rod, with separately locking nut 4.3 on spinning respectively on two screw rods.During adjusting, first unclamp locking nut 4.3, then rotating screw cover, by making two screw rods move in opposite directions or oppositely move, regulate the distance between two screw rods, thereby change the position of bearing with spherical outside surface in horizontal plane, when when making radially wobbling of axle sleeve reach in the designing requirement scope to the above bearing of all directions to the adjusting of medium-height trestle, think that namely agitator has been in ideal position, namely reached the purpose of centering.One end of described lockset screw-button is connected with described bearing block, and the other end is fixedly connected on described column, and the lower end of described column is fixedly mounted on described low head, is provided with backing plate between described column and described low head or is not provided with backing plate.
Utilize the thread mechanism of described lockset screw-button, radially wobbling of axle sleeve can be controlled at 8 class precisions when agitator is installed.Adopt axle sleeve can effectively reduce wearing and tearing to main shaft, only need to change bearing with spherical outside surface when needing and axle sleeve gets final product, and need not to change the such heavy parts of main shaft, effectively reduce cost.
(4) cartridge heater is provided with damping device 5, can alleviate issuable axial vibration.Described damping device comprises the main helical spring 16 with cushioning effect, the helical spring upper end of described master is connected with the lower end 8.1 of described cartridge heater, the helical spring lower end of described master is arranged on cartridge heater mounting bracket 17, and described cartridge heater mounting bracket is fixedly mounted in described reactor shell.
The present invention can take full advantage of the limit of vertical lathe processing, and reactor inside diameter can reach 9 meters and can not produce difficulty, also can not produce the difficulty of transportation.Adopt the flange donsole between each section of reactor shell, formed bevel for welding is the butt welding with backing plate, and the welding difficulty is little, and reliability is high.Reactor shell simple in structure, easy to manufacture, the welding difficulty is low, and quality is controlled well, and check and check and accept and only need conventional method is not only significantly shortened the manufacturing cycle and also can be reduced manufacturing cost simultaneously.
Claims (10)
1. esterifier, comprise reactor shell and be arranged at described reactor shell interior heater and upper dress formula agitator, described upper dress formula agitator is provided with main shaft, the upper end of described main shaft connects stirrer drive, it is characterized in that described reactor shell is connected in sequence by upper cover, middle cylindrical shell and low head, between described upper cover, middle cylindrical shell and low head, interconnective mode is for connecting by the flange that is provided with the donsole structure.
2. esterifier as claimed in claim 1, it is characterized in that described middle cylindrical shell is integrated or adopt interconnecting by some cylinder sections the Split type structure that forms, the interconnective mode of described some cylinder sections is for connecting by the flange that is provided with the donsole structure.
3. esterifier as claimed in claim 2, is characterized in that described each donsole structure adopts large-scale vertical lathe to process.
4. as claim 1,2 or 3 described esterifiers, it is characterized in that described upper cover is provided be used to the agitator flange that described agitator is installed.
5. esterifier as claimed in claim 4 is characterized in that the first benchmark of centering when described agitator flange is described agitator assembling.
6. esterifier as claimed in claim 5, is characterized in that described upper cover, middle cylindrical shell and low head are all with the heating agent chuck.
7. as claim 1,2 or 3 described esterifiers, it is characterized in that described heater adopts some vertical cartridge heaters, described cartridge heater is by connecting evaporimeter into and out of conduit accordingly, described evaporimeter is positioned at the outside of described reactor shell, the side-lower of described cartridge heater, and described cartridge heater, conduit and evaporimeter consist of unpowered circulation heating agent vacuum system.
8. esterifier as claimed in claim 7, the horizontal cross-section that it is characterized in that each described cartridge heater is approximate fan annular, described some cartridge heaters are divided into a plurality of groups, cartridge heater in each group is evenly spaced apart on same circumference, on the same group cartridge heater is not distributed on coaxial different circumference, radially leave the interval between the two adjacent groups cartridge heater, each described cartridge heater is mainly by the cartridge heater inner barrel, the cartridge heater outer cylinder body, upper plate and lower plate form, in described cartridge heater, the setting of outer cylinder body coaxial spaced also interconnects the tubular that surrounds up/down perforation, on described, lower plate is arranged on respectively in described cartridge heater, the upper surface of outer cylinder body and lower surface, in described cartridge heater, outer cylinder body and upper, the separate space formation heating agent heat release space that lower plate surrounds.
9. esterifier as claimed in claim 8, the lower end that it is characterized in that described cartridge heater is provided with damping, described damping device comprises the main helical spring with cushioning effect, the helical spring upper end of described master is connected with the lower end of described cartridge heater, the helical spring lower end of described master is arranged on the cartridge heater mounting bracket, and described cartridge heater mounting bracket is fixedly mounted in described reactor shell.
10. esterifier as claimed in claim 9, it is characterized in that being equipped with in described reactor shell adjustable base bearing device, described adjustable base bearing device comprises spherical bearing, axle sleeve, bearing block and a plurality of extension of radially different directions and coplanar being used for along described spherical bearing that is connected in described bearing block are adjusted the bearing of described spherical bearing horizontal level to medium-height trestle, the inner ring fixed cover of described spherical bearing is located on described axle sleeve, the outer ring is fixedly mounted in a hole of described bearing block, described axle sleeve is fixedly mounted on the lower end of described main shaft, preferably, each described bearing comprises lockset screw-button and column to medium-height trestle, described lockset screw-button is comprised of a plurality of connectors, be provided with for the thread mechanism of regulating length and the vertical rotating shaft connection that is connected regulating direction, the quantity that described vertical rotating shaft connects is one or more, and be provided with or be not provided with the connection locking device, one end of described lockset screw-button is used for installing described bearing block, the other end is fixedly connected on described column, the lower end of described column is fixedly mounted on described low head, be provided with backing plate between described column and described low head or be not provided with backing plate.
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| CN201310093958.5A CN103170298B (en) | 2013-03-22 | 2013-03-22 | Esterification reactor |
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| CN202447086U (en) * | 2011-12-31 | 2012-09-26 | 杭州民生机械制造有限公司 | Stainless steel reaction kettle |
| CN102962022A (en) * | 2012-12-09 | 2013-03-13 | 大连创达技术交易市场有限公司 | Layered heating type reaction kettle |
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