Test device for coupling complex atmosphere corrosion with high-temperature solid-phase erosion corrosion

A high-temperature solid-phase, erosion-corrosion technology, applied in the fields of weather resistance/light resistance/corrosion resistance, measuring devices, testing wear resistance, etc., can solve problems such as difficult to determine the cause of tube explosion

Pending Publication Date: 2020-02-07
XINJIANG UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defect that it is difficult to determine the cause of the tube explosion of the fluidized bed boiler heat exchanger under the complex atmosphere and high-temperature solid-phase erosion conditions, the purpose of the present invention is to provide a test device for complex atmosphere corrosion coupled with high-temperature solid-phase erosion corrosion. Simulation of pipe burst in circulating fluidized bed boiler heat exchanger under working conditions

Method used

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  • Test device for coupling complex atmosphere corrosion with high-temperature solid-phase erosion corrosion
  • Test device for coupling complex atmosphere corrosion with high-temperature solid-phase erosion corrosion
  • Test device for coupling complex atmosphere corrosion with high-temperature solid-phase erosion corrosion

Examples

Experimental program
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Embodiment 1

[0019] Example one, such as figure 1 , figure 2 with image 3 As shown, a complex atmosphere corrosion coupled high-temperature solid phase erosion corrosion test device includes a medium distribution system, a corrosion reaction system, and an exhaust gas treatment system; the medium distribution system includes a plurality of gas cylinders 1, a plurality of pressure reducing valves 2, Multiple mass flow meters 3, multiple one-way valves Ⅰ 4, gas mixer 5, one-way valve Ⅱ 6, steam generator 7, heater 8, steam generator model ZXYG38-A, multiple gas cylinders 1 are installed in sequence Have H 2 S, CO, CO 2 , HCl, O 2 , N 2 , SO 2 , NH 3 For gas, the outlet of heater 8 is directly connected to tube furnace 13 with one-way valve Ⅳ12 on the pipeline, and the other way is connected to tube furnace 13 through ejector 18, with one-way valve Ⅲ10 and venturi mixer on the pipeline. 11 and the feeder 9, the steam generator 7 is located at the outlet of the heater 8. The high-temperature g...

Embodiment 2

[0022] Example two, such as figure 1 , Figure 4 with Figure 5 As shown, the implementation of the medium distribution system and the exhaust gas treatment system in this embodiment is completely the same as that of the first embodiment, so it will not be repeated. The corrosion reaction system in this embodiment includes a tube furnace 13 and an ejector 18. A test piece support device 14 is provided at the exit of the ejector 18, and the test piece support device 14 fixes the test piece 19; the test piece support device 14 It includes a fixed clamp 141, a sliding clamp 142, an adjustment hole 143 and a fastening bolt 144. One end of the sliding clamp 142 is provided with a fixed hole. The specimen support device 14 includes at least two sliding clamps 142. The sliding clamp 142 and the fixed clamp are adjusted according to the experimental requirements. Adjust the position of the sliding clamp 142 in the adjustment hole 143 at the same time as the included angle between 141, ...

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Abstract

The invention discloses a test device for coupling complex atmosphere corrosion with high-temperature solid-phase erosion corrosion. The test device comprises a medium distribution system, a corrosionreaction system and a tail gas treatment system; the test device not only can control the speed of particle erosion by controlling the flow of various gases, but also perform corrosion and erosion tests of multiple test pieces simultaneously; the distance among multiple test pieces can be adjusted at arbitrarily, and a working condition thereof is closer to an abrasion condition between the tubewalls of heat exchangers in an actual boiler.

Description

Technical field [0001] The invention relates to the field of boiler operation safety, in particular to a test device for complex atmosphere corrosion coupled high temperature solid phase erosion corrosion. Background technique [0002] Circulating fluidized bed boiler fuel has a wide range of applications, good desulfurization effect, high combustion efficiency, relatively low investment and operating costs, and is widely used in coal power and chemical industries. The circulating fluidized bed boiler uses gas to fluidize the fuel particles and makes the fuel contact the oxygen in the gas during the fluidization process to complete the combustion heat release process. In the process of particle fluidized combustion, a large number of particles hit the tube wall of the heat exchanger, causing serious abrasion problems on the tube wall and reducing the availability of the fluidized bed boiler. [0003] In addition, as domestic pollution has become more serious, the environmental pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N3/56G01N3/02
CPCG01N3/02G01N3/565G01N17/006G01N2203/0226G01N2203/024G01N2203/0246G01N2203/0274
Inventor 吴文亚刘坤朋魏博王峰赵纯亮焦金峰
Owner XINJIANG UNIVERSITY
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