CN111346588A - Method for building loop reactor - Google Patents
Method for building loop reactor Download PDFInfo
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- CN111346588A CN111346588A CN202010139923.0A CN202010139923A CN111346588A CN 111346588 A CN111346588 A CN 111346588A CN 202010139923 A CN202010139923 A CN 202010139923A CN 111346588 A CN111346588 A CN 111346588A
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
- B01J19/243—Tubular reactors spirally, concentrically or zigzag wound
Abstract
The method for building a loop reactor of the invention comprises the following steps: an environment pre-judging step: pre-judging the frequent wind direction of an area to be installed; a reactor pre-judging step: according to the arrangement mode of the plurality of straight sleeves, determining that the direction with smaller transverse projection area of the plurality of straight sleeves is the windward direction, or determining that the direction with larger anti-bending moment of the three-dimensional frame is the windward direction; the installation step: and fixing the space frame to the area to be installed, and enabling the windward direction to face the frequent wind direction. The invention combines the frequent wind direction of the using environment in the construction, reduces the influence of the wind force of the using environment on the loop reactor, improves the anti-dumping capability of the whole structure, keeps the stability of the whole structure of the reactor, can meet the requirements of the strength and the stability of a high-rise structure, and prolongs the service life of equipment.
Description
Technical Field
The invention relates to the technical field of construction of special petrochemical equipment in mechanical equipment engineering, in particular to a construction method of a loop reactor.
Background
Polypropylene and polyethylene are the largest varieties of general synthetic resins in yield and consumption, and there are three production techniques: slurry polymerization, gas phase polymerization, and solution polymerization. The slurry process technology is a main process and can be classified into a stirred tank type and a loop reactor according to the form of the reactor.
As shown in figure 1, the loop reactor comprises a plurality of straight sleeves, jacket communicating pipes (C1-C5), elbows, mounting supports, connecting beams and the like, wherein every two straight tube cylinders and two bent tubes form a cycle. The high-speed and high-speed integrated hydraulic cylinder is mainly formed by sequentially connecting six straight sleeve type cylinders (R1, R2, R... cndot.R 6), five large bends (A1, A2, A3, B1 and B2) of 180 degrees and a bend B3 of 90 degrees to form a circulating whole and is located on a higher platform foundation. An axial flow pump is arranged at the elbow at the bottom of the loop, reaction materials enter the loop reactor from the position 1A, are stirred and circulated in the loop reactor under the driving of the axial flow pump, react to form pulpous polypropylene under the action of a catalyst, and are discharged from the position 1B to enter a granulation system; five jacket communicating pipes are arranged between the jackets and connected with each other, and cooling water in the jackets takes away heat released by reaction in the inner pipe through the dividing wall to maintain normal operation of the reaction process.
The heat is generated by polymerization reaction, so the reaction heat is taken away by cold water shortage in the jacket, the outer pipe of the straight sleeve is provided with a waveform expansion joint, a mounting support (D1-D6) and a supporting beam seat, the elbow is not provided with a sleeve, the elbow is connected with the two ends of the inner pipe of the straight sleeve through flanges to enable the straight sleeve to be connected into a whole flow, the jacket communicating pipe of the jacket enables the jacket of the straight sleeve to be connected into a whole flow, the connecting beam is connected with the supporting beam seat through bolts, and the straight sleeve is combined into a three-dimensional frame. The loop reactor is a multi-foundation support, namely each straight sleeve pipe is provided with an own mounting support, errors of the length, the axis position, the direction, the elevation, the distance and the like of the straight sleeve pipe, and a plurality of factors such as the parallelism of the straight sleeve pipe, the verticality of a flange, the manufacturing error of a bent pipe and the like can simultaneously influence the mounting and sealing performance of the loop pipe. The installation of the loop reactor can be divided into a vertical type and an inclined type, the floor area of the latter is slightly larger, and the integral structure of the latter is more stable than that of the former.
With the shortage of petroleum resources, in order to meet the huge demand and development of the market for ethylene special materials, new and more rigorous requirements are provided for the structure, capacity and quality of the loop reactor equipment, and chemical enterprises expect to reduce the cost and improve the market competitiveness of the price through the scale effect of high capacity. However, the design and manufacture of the circulating reactor have high technical requirements, and the basic overall structural form of the loop reactor equipment is not fundamentally improved for 23 years: for 4 vertical sleeves installed vertically, the arrangement mode is a square arrangement structure with 2 rows and 2 columns; for 6 vertical sleeves installed vertically, the arrangement mode is 2 rows and 3 rows; for 8 vertical sleeves installed vertically, the arrangement mode is 2 rows and 4 rows; for 12 vertical sleeves installed vertically, the arrangement mode is 2 rows and 6 columns.
The prior loop reactor structure has the following defects in increasing capacity or improving and upgrading:
the first problem is that the installation and arrangement mode of the straight sleeves is a rectangular arrangement structure, and the strength and the stability of the high-rise steel structure are difficult to guarantee under the action that dynamic loads such as wind and earthquake are vertical to the long edge of the arrangement structure along with the increase of the height of the straight sleeves to reach or even exceed 60 m. If the wall thickness of the sleeve is increased to improve the strength, the equipment cost is increased, the heat transfer difficulty of the partition wall is caused, and the thermal stress is increased; if the stability of the whole structure is improved by the inclined vertical installation, the occupied area is increased, and the investment cost of the device is increased.
The second problem is that with the adjustment of the production and operation of petrochemical enterprises, newly built devices in a factory area are increased, the occupied area layout of the devices needs to be adjusted, the arrangement mode of the polyolefin reactor straight casing pipes needs to have a flexible adjustment function, and the original reactor straight casing pipes are only limited to a certain fixed arrangement mode.
The third problem is that the original reactor straight casing is limited to a certain fixed arrangement mode along with seasonal climate change around the world and in the local, and the reactor products are not widely universal when being installed on site, thereby limiting the export trade of the reactor products.
The fourth problem is that along with the development of the scale operation of polyolefin products, the capacity of a reactor needs to be gradually adjusted and is not suitable for one-step large-amplitude leap adjustment.
In order to rapidly adapt to the market environment required by a large number of large-structure loop reactors in the current petrochemical new construction and extension, meet the requirements on capacity increase, capacity expansion, adjustment and upgrading of the traditional loop reactor, and develop a new high-capacity annular sleeve reactor with a sleeve arrangement structure, the high-capacity annular sleeve reactor has strong industrial and economic backgrounds.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a method for constructing a loop reactor, which can meet the requirements of strength and stability of a high-rise structure and prolong the service life of equipment.
In order to achieve the purpose, the invention provides the following technical scheme:
providing a building method of a loop reactor, wherein the loop reactor comprises a plurality of straight sleeves, a plurality of jacket communicating pipes, a plurality of elbows and a plurality of mounting supports, each straight sleeve comprises an inner pipe and an outer pipe which are vertically arranged, and the outer pipe is sleeved outside the inner pipe; the plurality of elbows sequentially connect the plurality of inner pipes in series, thereby forming a communicating flow channel for conveying reaction materials; the jacket communicating pipes are respectively positioned at the elbows and connected with the corresponding outer pipes, so that the spaces between the inner pipes and the outer pipes are connected in series to form a communicating flow channel for conveying a cooling medium; the plurality of mounting supports are arranged at the lower parts of the plurality of outer pipes, and a connecting beam is arranged between every two straight sleeves respectively, so that the plurality of straight sleeves are combined into a three-dimensional frame; the construction method comprises the following steps:
an environment pre-judging step for pre-judging the frequent wind direction of the area to be installed;
a reactor pre-judging step, which is used for determining the windward direction, determining the direction with the smallest transverse projection area of the plurality of straight sleeves as the windward direction or determining the direction with the largest anti-falling bending moment of the three-dimensional frame as the windward direction according to the arrangement mode of the plurality of straight sleeves;
an installation step for fixing the space frame to an area to be installed and causing the windward direction to face a frequent wind direction.
Preferably, the method further comprises the step of stabilizing: after the mounting step, the plurality of mounting brackets are connected to each other by the cross member.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is four, the intersection points of two horizontal standard lines and four vertical standard lines which are vertical to the ground are used as positioning points, the lower end parts of the four straight sleeves are arranged at the four positioning points, connecting lines of the four positioning points form a parallelogram or a prism, and the longer diagonal direction of the parallelogram or the prism is the windward direction.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is eight, nine cross points of three horizontal standard lines and three vertical standard lines which are perpendicular to the ground are used as positioning points, the lower end parts of the eight straight sleeves are arranged at eight other positioning points except for the positioning point at the lower left corner, and the direction from the upper right corner to the lower left corner is the windward direction.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is eight, the eight straight sleeves are distributed in a snake shape, and the extending direction of the snake shape is the windward direction.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is twelve, sixteen cross points of four transverse standard lines and four longitudinal standard lines which are perpendicular to the ground are used as positioning points, the lower end portions of the eight straight sleeves are arranged at other positioning points except for the four positioning points at the lower left corner, and the direction from the upper right corner to the lower left corner is the windward direction.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: twelve straight sleeves are arranged, sixteen cross points of four transverse standard lines and four longitudinal standard lines which are vertical to the ground are used as positioning points, and the lower end parts of the eight straight sleeves are arranged at different positioning points in a delta shape.
Preferably, the arrangement mode of the plurality of straight sleeves is as follows: the uniform separation points on the ground circular standard line are used as positioning points, the lower end parts of the plurality of straight sleeves are arranged at different positioning points, and the direction transversely facing any one straight sleeve is the windward direction.
Preferably, the frequent wind direction is a direction in which the duration of the wind force exceeding a preset threshold value in the year is longest.
Preferably, the arrangement mode of the plurality of straight sleeves is detachably changed.
The invention has the beneficial effects that:
the method for building a loop reactor of the invention comprises the following steps: an environment pre-judging step: pre-judging the frequent wind direction of an area to be installed; a reactor pre-judging step: according to the arrangement mode of the plurality of straight sleeves, determining that the direction with smaller transverse projection area of the plurality of straight sleeves is the windward direction, or determining that the direction with larger anti-bending moment of the three-dimensional frame is the windward direction; the installation step: and fixing the space frame to the area to be installed, and enabling the windward direction to face the frequent wind direction. The invention combines the frequent wind direction of the using environment in the construction, reduces the influence of the wind force of the using environment on the loop reactor, improves the anti-dumping capability of the whole structure, keeps the stability of the whole structure of the reactor, can meet the requirements of the strength and the stability of a high-rise structure, and prolongs the service life of equipment.
Drawings
FIG. 1 is a schematic diagram of the structure of a prior art loop reactor.
Fig. 2 is a schematic view of an arrangement of straight sleeves according to the first embodiment.
FIG. 3 is a schematic diagram of the arrangement of straight tubes in the second embodiment, wherein the materials are fed from the port A, flow through the tubes and the elbow in sequence along the arrow direction, and exit from the port B after reaction.
Fig. 4 is a schematic view of the arrangement of the straight sleeves in the third embodiment.
FIG. 5 is a schematic view showing an arrangement of straight tubes according to a fourth embodiment.
FIG. 6 is a schematic view showing an arrangement of straight tubes according to the fifth embodiment.
FIG. 7 is a schematic view showing an arrangement of straight tubes according to a sixth embodiment.
FIG. 8 is a schematic view showing an arrangement of straight tubes according to a seventh embodiment.
Fig. 9 is a schematic view of an arrangement of straight tubes according to an eighth embodiment.
Reference numerals:
in fig. 1, included are:
r1, R2, R3, R4, R5, R6-straight sleeve,
A1, A2, A3, B1, B2, B3-elbow,
C1, C2, C3, C4 and C5-jacket communicating pipe,
D1, D2, D3, D4, D5, D6-mounting support,
2A-cooling medium inlet of jacket flow channel, 2F-cooling medium outlet of jacket flow channel,
1A-reaction material inflow port, 1B-reaction material outflow port.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings. Compared with the conventional loop reactor, the loop reactor suitable for high productivity undergoes significant structural changes, thereby bringing about changes in the manufacturing process. The present invention will be further described below, but the embodiments are not limited thereto.
Example 1:
in the method for constructing a loop reactor according to this embodiment, as shown in fig. 1 and 2, the loop reactor includes a plurality of straight pipes, a plurality of jacket communicating pipes, a plurality of elbows, and a plurality of mounting brackets, each straight pipe includes an inner pipe and an outer pipe vertically arranged, and the outer pipe is sleeved outside the inner pipe. The plurality of elbows are used for sequentially connecting the plurality of inner pipes in series, thereby forming a communicating flow channel for conveying reaction materials. The jacket communicating pipes are respectively positioned at the elbows and connected with the corresponding outer pipes, so that the spaces between the inner pipes and the outer pipes are connected in series to form a communicating flow passage for conveying a cooling medium. The mounting supports are arranged at the lower parts of the outer pipes, and a connecting beam is arranged between every two straight sleeves respectively, so that the straight sleeves are combined into a three-dimensional frame. The construction method comprises the following steps:
an environment pre-judging step: pre-judging the frequent wind direction of an area to be installed;
a reactor pre-judging step: according to the arrangement mode of the plurality of straight sleeves, determining that the direction with smaller transverse projection area of the plurality of straight sleeves is the windward direction, or determining that the direction with larger anti-bending moment of the three-dimensional frame is the windward direction;
the installation step: and fixing the space frame to the area to be installed, and enabling the windward direction to face the frequent wind direction.
Preferably, the method further comprises the step of stabilizing: after the mounting step, the plurality of mounting brackets are connected to each other by the cross member. The shape of the integral structure projected to the ground plane is changed correspondingly with the change of the arrangement and combination scheme of the straight sleeves. Analysis and calculation show that on the premise of no change of external load born by the reactor, the integral structure fully exerts the characteristic of mutual support effect, although the integral structure is not a novel support, the bearing capacity is obviously enhanced, and the strength and the stability of the structure can smoothly pass through checking, so that the crossing type technical effect can be achieved. The loop reactor sleeve arrangement combined structure is suitable for polyethylene and polypropylene production in petrochemical industry and other production processes in petrochemical industry.
The technical innovation route is as follows: the windward side of the arrangement structure is reduced, and the downwind side of the arrangement structure is increased, so that the load borne by the arrangement structure is reduced, or the arrangement and combination of the straight sleeves are reasonably arranged, the floor area is reasonably arranged, and the anti-toppling bending moment capability of the arrangement structure is increased. Historical observation and statistical analysis show that the annual frequent wind directions and the strong wind directions thereof in different places are different, and a frequent strong wind direction exists in any place all the year round, or the frequent wind direction is the direction with the longest duration time that the annual wind force exceeds a preset threshold value according to environmental monitoring. The natural law is difficult to change by human beings, but people can play a creative role in designing the loop reactor, the arrangement structure of the straight sleeves for designing the loop reactor is combined with the external use regional environment, the capacity of the safe operation of the reactor is kept to meet the requirement, the subjective activity can be achieved when the construction site of a device is selected and equipment is arranged, the adverse effect of the nature on the equipment is reduced, and the problem of the requirement on the strength and the stability of a high-rise structure is solved.
The arrangement mode of the plurality of straight sleeves of the embodiment is as follows: as shown in fig. 2, six straight sleeves (R1 to R6) sequentially connected to each other are attached to the lower end positions of the straight sleeves indicated by circles in a continuous V-shaped arrangement. The distance between every two sleeves along the flow direction is equal, and each circle represents the position of the lower end part of one straight sleeve. The horizontal wind load F of the main body flowing direction acts on the windward side with a smaller transverse projection plane, and the horizontal wind load F of the non-main body flowing direction acts on the stress surface with a longer side as a whole.
In order to realize a flexible and adjustable arrangement structure for the mutual connection between the straight sleeves, the distances of all the openings of the 180-degree connecting elbows between the straight sleeves are the same, and the sealing interfaces are all in flange connection; all the connecting beams between the straight sleeves are the same in length and connecting mode, and the connecting beams and the supporting beam seats are connected through bolt holes drilled in the unified template and connected through bolts.
Example 2:
as shown in fig. 3, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that the six straight casings of the loop reactor are installed in an inclined vertical manner, so that the whole is more stable, and the bending moment resistance is larger than that of the vertical type.
Example 3:
as shown in fig. 4, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment are explained in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that the number of the straight sleeves is four, the intersections of two horizontal standard lines and four vertical standard lines perpendicular to the ground are used as positioning points, the lower end portions of the four straight sleeves are arranged at the four positioning points, and the connecting lines of the four positioning points form a parallelogram or a prism, the longer diagonal direction of the parallelogram or the prism is the windward direction, and the anti-bending moment in the direction is larger.
Example 4
Fourth, as shown in fig. 5, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that the number of the straight sleeves is eight, and their arrangement is 3 rows and 3 columns of 90 ° square shapes, that is, nine intersections of three horizontal standard lines and three vertical standard lines perpendicular to the ground are used as positioning points, the lower end portions of the eight straight sleeves are arranged at eight positioning points except for the positioning point at the lower left corner, the direction from the upper right corner to the lower left corner is the windward direction, and the bending moment resistance in this direction is larger.
Example 5
Fifth embodiment of the construction method of the present invention, as shown in fig. 6, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that the number of the straight sleeves is eight, the eight straight sleeves are distributed in a serpentine shape, the extending direction of the serpentine shape is the windward direction, i.e. the left-right direction in fig. 6, and the transverse projection area of the direction is small.
Example 6
Sixth embodiment of the construction method of the present invention, as shown in fig. 7, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that twelve straight sleeves are arranged in 4 rows and 4 columns in a 90-degree curved ruler shape, that is, sixteen intersections of four horizontal standard lines and four vertical standard lines perpendicular to the ground are used as positioning points, the lower end portions of eight straight sleeves are arranged at other positioning points except for four positioning points at the lower left corner, the direction from the upper right corner to the lower left corner is the windward direction, and the bending moment resistance in this direction is larger.
Example 7
Seventh embodiment of the construction method of the present invention, as shown in fig. 8, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The present embodiment is different from embodiment 1 in that the number of the straight sleeves is twelve, and the arrangement manner of the straight sleeves is 4 rows and 4 columns of 90-degree delta-shaped, that is, sixteen intersection points of four horizontal standard lines and four vertical standard lines which are perpendicular to the ground are used as positioning points, and the lower end parts of eight straight sleeves are arranged at different positioning points in a delta-shaped manner. The direction from the lower left corner to the upper right corner is the windward direction, or the direction from the lower right corner to the upper left corner is the windward direction, and the bending moment resistance in the direction is larger.
Example 8
Eighth embodiment of the construction method of the present invention, as shown in fig. 9, the main technical solution of this embodiment is the same as that of embodiment 1, and the features not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The difference between this embodiment and embodiment 1 is that the arrangement of the plurality of straight sleeves is: the uniform separation points on the ground circular standard line are used as positioning points, the lower end parts of the plurality of straight sleeves are arranged at different positioning points, and the direction transversely facing any one straight sleeve is the windward direction.
Example 9
Ninth, the main technical solution of this embodiment is the same as that of embodiment 1, and the features that are not explained in this embodiment adopt the explanations in embodiment 1, and are not described again here. The present embodiment is different from embodiment 1 in that the arrangement of the plurality of straight sleeves is detachably changed. Specifically, the support foundation is constructed as designed before the first installation of the loop reactor. For changing the arrangement and combination scheme based on various purposes after the straight sleeve is installed for the first time, only the bolts at the end part of the straight sleeve are loosened, the elbow is temporarily disassembled, and the straight sleeve is hung to a new position for installation. Before this, the mounting holes of the straight sleeves and the anchor bolts embedding the mounting brackets should be drilled at the new mounting location. And then, connecting discontinuous reinforcing steel bars in the foundation where the original mounting hole is located according to the standard, pouring cement-gravel concrete back, and filling the original mounting hole. And (5) reinforcing the foundation when necessary.
When the straight sleeves are installed according to the new arrangement and combination scheme, the respective installation supports are connected together through the cross beam, and the shape of the integral structure projected to the ground plane is correspondingly changed along with the change of the arrangement and combination scheme of the straight sleeves. Analysis and calculation show that the overall structure fully exerts the characteristics of mutual support action on the premise of unchanging the external load born by the reactor, and the strength and the stability of the structure can be smoothly checked.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The construction method of the loop reactor comprises the steps that the loop reactor comprises a plurality of straight sleeves, a plurality of jacket communicating pipes, a plurality of elbows and a plurality of mounting supports, each straight sleeve comprises an inner pipe and an outer pipe which are vertically arranged, and the outer pipe is sleeved outside the inner pipe; the plurality of elbows sequentially connect the plurality of inner pipes in series, thereby forming a communicating flow channel for conveying reaction materials; the jacket communicating pipes are respectively positioned at the elbows and connected with the corresponding outer pipes, so that the spaces between the inner pipes and the outer pipes are connected in series to form a communicating flow channel for conveying a cooling medium; the plurality of mounting supports are arranged at the lower parts of the plurality of outer pipes, and a connecting beam is arranged between every two straight sleeves respectively, so that the plurality of straight sleeves are combined into a three-dimensional frame; the method is characterized in that: the construction method comprises the following steps:
an environment pre-judging step for pre-judging the frequent wind direction of the area to be installed;
a reactor pre-judging step, which is used for determining the windward direction, determining the direction with the smallest transverse projection area of the plurality of straight sleeves as the windward direction or determining the direction with the largest anti-falling bending moment of the three-dimensional frame as the windward direction according to the arrangement mode of the plurality of straight sleeves;
an installation step for fixing the space frame to an area to be installed and causing the windward direction to face a frequent wind direction.
2. A method of constructing a loop reactor according to claim 1, characterized in that: further comprising a stabilizing step: after the mounting step, the plurality of mounting brackets are connected to each other by the cross member.
3. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is four, the intersection points of two horizontal standard lines and four vertical standard lines which are vertical to the ground are used as positioning points, the lower end parts of the four straight sleeves are arranged at the four positioning points, connecting lines of the four positioning points form a parallelogram or a prism, and the longer diagonal direction of the parallelogram or the prism is the windward direction.
4. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is eight, nine cross points of three horizontal standard lines and three vertical standard lines which are perpendicular to the ground are used as positioning points, the lower end parts of the eight straight sleeves are arranged at eight other positioning points except for the positioning point at the lower left corner, and the direction from the upper right corner to the lower left corner is the windward direction.
5. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is eight, the eight straight sleeves are distributed in a snake shape, and the extending direction of the snake shape is the windward direction.
6. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: the number of the straight sleeves is twelve, sixteen cross points of four transverse standard lines and four longitudinal standard lines which are perpendicular to the ground are used as positioning points, the lower end portions of the eight straight sleeves are arranged at other positioning points except for the four positioning points at the lower left corner, and the direction from the upper right corner to the lower left corner is the windward direction.
7. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: twelve straight sleeves are arranged, sixteen cross points of four transverse standard lines and four longitudinal standard lines which are vertical to the ground are used as positioning points, and the lower end parts of the eight straight sleeves are arranged at different positioning points in a delta shape.
8. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is as follows: the uniform separation points on the ground circular standard line are used as positioning points, the lower end parts of the plurality of straight sleeves are arranged at different positioning points, and the direction transversely facing any one straight sleeve is the windward direction.
9. A method of constructing a loop reactor according to claim 1, characterized in that: the frequent wind direction is the direction with the longest duration that the wind force exceeds a preset threshold value within the year.
10. A method of constructing a loop reactor according to claim 1, characterized in that: the arrangement mode of the plurality of straight sleeves is detachable and changeable.
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| CN202010139923.0A CN111346588B (en) | 2020-03-03 | 2020-03-03 | Method for building loop reactor |
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| CN202010139923.0A CN111346588B (en) | 2020-03-03 | 2020-03-03 | Method for building loop reactor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983763A (en) * | 2010-12-15 | 2011-03-09 | 茂名重力石化机械制造有限公司 | Annular pipe reactor |
| CN102794151A (en) * | 2012-09-14 | 2012-11-28 | 茂名重力石化机械制造有限公司 | Diagonal bracing type loop reactor |
| JP2015200442A (en) * | 2014-04-07 | 2015-11-12 | 株式会社デンソー | heat exchanger |
-
2020
- 2020-03-03 CN CN202010139923.0A patent/CN111346588B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101983763A (en) * | 2010-12-15 | 2011-03-09 | 茂名重力石化机械制造有限公司 | Annular pipe reactor |
| CN102794151A (en) * | 2012-09-14 | 2012-11-28 | 茂名重力石化机械制造有限公司 | Diagonal bracing type loop reactor |
| JP2015200442A (en) * | 2014-04-07 | 2015-11-12 | 株式会社デンソー | heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 王洪伟: "《我所理解的流体力学 第2版》", 30 April 2019, 国防工业出版社 * |
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