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Construction method of loop reactor

A technology for loop reactors and construction methods, applied in chemical instruments and methods, chemical/physical/physical chemical fixed reactors, chemical/physical/physical chemical processes, etc., can solve the problem of increasing floor area, strength and stability In order to meet the strength and stability requirements, improve the anti-dumping ability and prolong the service life

Active Publication Date: 2021-11-16
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first problem is that the installation and arrangement of the straight bushings is a rectangular arrangement structure. As the height of the straight bushings increases to 60m or more, the towering steel structure is under the action of dynamic loads such as wind and earthquakes perpendicular to the long side of the arrangement structure. , its strength and stability are difficult to guarantee
If the strength is improved by increasing the wall thickness of the casing, it will not only increase the equipment cost, but also cause difficulty in heat transfer between the partition walls and increase thermal stress; if the stability of the overall structure is improved by oblique vertical installation, it will increase the floor area. Increased equipment investment cost
[0008] The second problem is that with the adjustment of the production and operation of petrochemical enterprises, the number of new devices in the plant area will increase, and the layout of the device needs to be adjusted. The arrangement of the straight sleeves of the polyolefin reactor needs to have the function of flexible adjustment. The original straight sleeve of the reactor is limited to a certain fixed arrangement
[0009] The third problem is that as the seasonal climate changes around the world and in the local area, the original straight sleeves of the reactor are limited to a certain fixed arrangement, and the reactor products do not have wide versatility when installed on site, which limits The export trade of reactor products
[0010] The fourth problem is that with the development of large-scale operation of polyolefin products, the production capacity of the reactor needs to be gradually adjusted and it is not suitable to make a large-scale adjustment in one step. Straight sleeves, or replace some straight sleeves, and the original straight sleeves of the reactor are limited to a certain fixed arrangement, which makes it difficult to realize the technical transformation of the reactor products on site, which limits the gradual upgrade of the reactor

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0048] The construction method of the loop reactor of the present embodiment, such as figure 1 and figure 2 As shown, the loop reactor includes a plurality of straight sleeves, a plurality of jacketed connecting pipes, a plurality of elbows and a plurality of installation supports, and each straight sleeve includes an inner tube and an outer tube arranged vertically, and the outer tube sleeve Outside the inner tube. A plurality of elbows connect the plurality of inner pipes in series in sequence, thereby forming a communication channel for conveying the reaction materials. A plurality of jacket communication pipes are respectively located at a plurality of elbows and connected to corresponding outer pipes, so that the space between the inner pipe and the outer pipe is connected in series to form a communication channel for transporting cooling medium. A plurality of mounting supports are arranged on the lower parts of the plurality of outer pipes, and connecting beams are a...

Embodiment 2

[0057] The second specific embodiment of the construction method of the present invention, as image 3 As shown, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that the six straight sleeves of the loop reactor are installed obliquely and vertically, which is more stable overall and has a larger anti-bending moment than the vertical type.

Embodiment 3

[0059] The third specific embodiment of the construction method of the present invention, as Figure 4 As shown, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that the number of straight bushings is four, and the intersection of two horizontal standard lines and four vertical standard lines perpendicular to the ground is used as the positioning point, and the lower ends of the four straight bushings are arranged at Four positioning points, and the connection line of the four positioning points forms a parallelogram or a prism, and the direction of the longer diagonal of the parallelogram or prism is the windward direction, and the anti-overturning moment in this direction is larger.

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Abstract

The construction method of the loop reactor of the present invention comprises the following steps: environment prediction step: predict the regular wind direction of the area to be installed; reactor prediction step: determine the arrangement of multiple straight sleeves The direction with the smaller lateral projected area of ​​the straight sleeve is the windward direction, or the direction with the larger overturning bending moment of the three-dimensional frame is determined to be the windward direction; installation steps: fix the three-dimensional frame to the area to be installed, and make the windward direction Towards the regular wind direction. The present invention combines the frequent wind direction of the use environment in the construction, reduces the influence of the wind force of the use environment on the loop reactor, improves the anti-dumping ability of the overall structure, maintains the stability of the overall structure of the reactor, and can meet the strength of the towering structure And stability requirements, prolong the service life of the equipment.

Description

technical field [0001] 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 technique [0002] Polypropylene and polyethylene are the varieties with the largest output and consumption in general-purpose synthetic resins. There are three production techniques for them: slurry polymerization, gas phase polymerization and solution polymerization. Slurry technology is the main method, which can be divided into stirred tank and loop reactors according to the reactor form. [0003] Loop reactor such as figure 1 As shown, it is composed of several straight casing pipes, jacket connecting pipes (C1~C5), elbows, mounting supports and connecting beams, etc., in which every two straight pipe cylinders and two elbow pipes form a cycle. It mainly consists of six straight casing tubes (R1, R2, ... R6), five 180° large elbows (A1, A2, A3, B1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24
CPCB01J19/243
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP