Gas corrosion characteristic testing apparatus

A characteristic testing and gas corrosion technology, applied in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of equipment efficiency and finished product quality decline, and achieve convenient processing and operation, easy testing, and wide temperature range Effect

Active Publication Date: 2014-01-01
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to atmospheric corrosion, the corrosion caused by the oil and gas transportation process, especially the coal, oil and other fuels consumed to provide steam, electric energy and other power for industrial processes will produce a large amount of high-temperature mixed gas. Most of them have corrosion problems, and some have serious corrosion problems. It has always been the bottleneck of energy saving or stable production
In order to prevent and mitigate the harm of corrosion, the investment in replacement of equipment and components, repairs, etc. due to corrosion, as well as the losses caused by accidents, production stoppages, loss, equipment efficiency reduction, and product quality decline caused by corrosion are very important. huge

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] refer to figure 1 , a kind of gas corrosion characteristics testing device provided by the present invention, it is provided with gas mixing area 1 and coupon area 9 successively along gas flow direction between gas inlet 2 and gas outlet 7, the gas inlet on gas mixing area 1 has three One, the inside of the gas mixing area 1 is equipped with a baffle plate 3 forming a baffle, wherein, in the hanging piece area 9, a hanging piece 5 is installed perpendicular to the gas flow direction, and there are 3 hanging pieces 5 arranged along the gas flow direction. A cover plate 6 is installed above the piece area 9, and the hanging piece 5 is hooked on the bottom surface of the cover plate 6. The temperature measuring and sampling port 8 is installed on the hanging piece area 9, and an insulation layer 4 is installed on the surface of the overall device.

[0017] When the device is in use, the gas can be in contact with the coupons after good mixing, and the corrosion rate of th...

Embodiment 2

[0019] refer to figure 2 , the difference from Embodiment 1 is that a mixing and scouring area 11 is installed between the hanging piece area 9 and the gas outlet 7, and the mixing and scouring area 11 forms an air flow channel 12 with a circular cross section. The mixing and scouring The middle part of the gas flow channel 12 in the zone 11 has a convex circular constriction segment 10, and behind the convex circular constriction segment 10 there is a variable-diameter helix 13 with the apex of the cone in front. The surface of the convex constriction segment 10 is a streamlined structure, and the angle between the streamlined surface at the upper end and the vertical direction is 45° 0 , the angle between the streamlined surface of the lower end and the vertical direction is 35 0 The cross-sectional shape of the helix of the variable-diameter helix is ​​circular, the helix diameter of the apex of the helix is ​​1.0 times the diameter of the helix, the pitch is 1.0 times th...

Embodiment 3

[0022] refer to image 3 An auxiliary functional area for investigating synergistic corrosion and scouring is installed between the hanging area 9 and the gas outlet 7. The auxiliary functional area is composed of two groups of mixing and scouring areas 11 and auxiliary hanging areas 15 connected to the hanging area 9 in sequence. A temperature-measuring sampling port 8 is installed on the hanging piece area 15. The mixing and scouring area 11 forms an air flow channel 12 with a circular cross section. There is a gas inlet 14 in the front of the slug 10, and a variable-diameter helix 10 with the tip of the cone in front at the back. The surface of the convex and constricted vein section is a streamlined structure, and the angle between the streamlined surface at the upper end and the vertical direction is 65° 0 , the angle between the streamlined surface of the lower end and the vertical direction is 45 0 The cross-sectional shape of the helix of the variable-diameter helix ...

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Abstract

A gas corrosion characteristic testing apparatus is characterized in that a gas mixing zone (1) and a hanger zone (9) are sequentially arranged between a gas inlet (2) and a gas outlet (7) along a gas flow direction, hangers are installed in the hanger zone in a direction vertical to the gas flow direction, a cover plate (6) is installed over the hanger zone, and the hangers hang on the bottom surface of the cover plate. The apparatus has the characteristics of simple structure, convenient processing and operation, wide adaptation temperature range, convenient testing of the comprehensive effects of a plurality of factors comprising the composition, temperature and flow velocity, especially the cooperative corrosion effects of different gases, and easy popularization and application.

Description

[0001] technical field [0002] The invention relates to a gas corrosion characteristic test device, which is mainly used for the gas corrosion characteristic test required in industrial fields such as petroleum engineering, oil refining and chemical industry, coal chemical industry, and metallurgy. Background technique [0003] Material deterioration caused by gas corrosion is a common corrosion result. According to statistics, the economic loss of materials caused by gas corrosion accounts for more than half of the total corrosion loss. Under certain conditions, the gas is highly corrosive to materials that have been in direct contact, especially gases containing sulfur, phosphorus or hydrogen. In addition to atmospheric corrosion, the corrosion caused by the oil and gas transportation process, especially the coal, oil and other fuels consumed to provide steam, electric energy and other power for industrial processes will produce a large amount of high-temperature mixed ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 周如金邱松山李宗宝谢颖吴世逵
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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