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A repairing method for broken short pipe of graphite tower

A repair method and technology for graphite tubes, applied in the directions of tube elements, tubes/pipe joints/pipes, threaded connections, etc., can solve the problem of low tensile strength of graphite, and achieve the effect of saving the cost of replacing equipment and reducing production costs.

Active Publication Date: 2017-05-31
WENGFU DAZHOU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tensile strength of graphite is low. In actual production and application, thermal expansion occurs during the heating process, and it naturally shrinks after cooling after parking.

Method used

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  • A repairing method for broken short pipe of graphite tower
  • A repairing method for broken short pipe of graphite tower
  • A repairing method for broken short pipe of graphite tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Short tube fracture number experiment

[0033] Taking the repair of graphite short tubes as an example, the above-mentioned experimental group was tested, and the repaired graphite short tubes were all repaired in the same way during the repair process. The number of fractures of the repaired short graphite tube is detected during use.

[0034] The specific implementation of the application is as follows:

specific Embodiment approach 1

[0035] Specific embodiment 1: the outer diameter of the graphite tube of described new processing is 455mm, and the internal thread place of broken graphite short tube evenly smears 1mm graphite phenolic cement, and the outer surface of the newly made graphite short tube evenly smears the graphite phenolic of 2mm The cement is repaired using the method of this application.

specific Embodiment approach 2

[0036] Specific embodiment 2: the external diameter of the graphite tube of described new processing is 459.8mm, and the internal thread place of broken graphite short tube evenly smears 1mm graphite phenolic cement, and the outer surface of the newly made graphite short tube evenly smears the graphite of 2mm The phenolic mortar is repaired using the method of this application.

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Abstract

The invention discloses a rupture repairing method for a short pipe of a graphite column. The repairing method comprises: firstly, a ruptured graphite short pipe is disassembled, and the inner diameter of the ruptured graphite short pipe is enlarged; secondly, a section of the ruptured graphite short pipe is lined with a newly processed graphite pipe which is connected with contact gaps in an adhesive mode by using graphite plaster, so that a new graphite short pipe is made; thirdly, graphite phenolic aldehyde plaster is evenly coated on the outer surface of the newly made graphite short pipe, and the newly made graphite short pipe is inserted into the short pipe of the graphite column rupture area and matched with the previous rupture surface. Meanwhile, a jack is used against the newly made graphite short pipe so that the loosening can be avoided, and a quartz furnace is used for baking. According to the repairing method, a good effect of the repaired graphite column connecting short pipe can be achieved through trials and operations, production equipment can be normally operated, the cost for changing the equipment can be saved, and therefore the production cost can be lowered.

Description

technical field [0001] The invention relates to the field of graphite tower equipment, in particular to a method for repairing broken short pipes of a graphite tower. Background technique [0002] The graphite tower is made of impermeable graphite. It has good corrosion resistance and temperature resistance. It is often used in high temperature and strong corrosion chemical industries. For example, it is used as a purification device in the production of wet process phosphoric acid and is widely used. Used in rectification tower, final concentration tower and defluorination tower. [0003] Usually the end of the flange connection between the graphite tower and the pipe is bonded to the tower with a short graphite tube, and a groove is processed on the short graphite tube to install a flange snap ring to clamp the looper flange and then connect to the other end of the pipe. Compensator connection. The tensile strength of graphite is low. In actual production and application...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L15/00F16L55/18
CPCF16L15/00F16L55/18
Inventor 陈刚孙应伦冯云飞文小兵黄光柱欧阳龙赵枫
Owner WENGFU DAZHOU CHEM CO LTD