Device for hydrogen sulfide high-pressure corrosion resistance test

Abstract

The invention provides a device for a hydrogen sulfide high-pressure corrosion resistance test. The device comprises a gas pressurizing pipeline system, a test kettle and an intelligent control cabinet, wherein the test kettle and the intelligent control cabinet are connected with the gas pressurizing pipeline system, and the intelligent control cabinet is further connected with the test kettle. The gas pressurizing pipeline system comprises three steel cylinders which are connected to the test kettle through a first gas flow meter, a second gas flow meter, a third gas flow meter and a gas pressurizing device. The test kettle is provided with a speed sensor, a temperature sensor, a pressure sensor, a motor, an electric furnace heating wire, a gas inlet pipeline and an exhaust pipeline, wherein the other end of the gas inlet pipeline is connected to the gas pressurizing device, and the other end of the exhaust pipeline is connected to a buffering tank. The intelligent control cabinet comprises a logic controller and an artificial intelligent temperature controller, wherein the logic controller and the artificial intelligent temperature controller are connected with an on-site man-machine interface, the artificial intelligent temperature controller is further connected with a pressure regulating module, and the on-site man-machine interface comprises an alarming unit. The device is high in automation degree and capable of displaying various parameter values in the test kettle and regulating the parameter values as needed.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a device for hydrogen sulfide high-pressure corrosion resistance test. Background technique [0002] Highly acidic natural gas fields refer to H 2 Natural gas fields with S content exceeding 10% have huge resources in the world and are an important part of natural gas resources. Safe and efficient development of such gas reservoirs is of great significance to alleviating the contradiction between supply and demand of natural gas in my country, promoting national economic development and ensuring national energy security. Highly acidic natural gas is highly corrosive, which can easily cause electrochemical corrosion and stress corrosion cracking of pipelines. Once the pipeline cracks or corrodes and perforates, it will cause H 2 The highly toxic gas of S leaked, which seriously threatened the lives of people around the gas field. Therefore, the problem of anti-corrosion is the...

AI Technical Summary

Problems solved by technology

Highly sour natural gas is highly corrosive, which can easily cause electrochemical corrosion and stress corrosion cracking of pipelines

Once the pipeline cracks or corrodes and perforates, it will cause H 2 The highly toxic gas of S leaked, which seriously threatened the lives of people around the gas field.

Therefore, the problem of anti-corrosion is the key to the safety of developing high-acid gas fields. In the development process, the requirements for the materials of pipelines and equipment are relatively high. However, the corrosion resistance tests of the materials of pipelines and equipment during the production process are mostly carried out under normal temperature and pressure. The temperature and pressure of the corrosive environment cannot reach the environment of the actual working conditions, and under the conditions of high temperature and high pressure, the simulated working conditions are more accurate, but most of them are manually operated on site now, and there are great potential safety hazards

[0003] At present, the vast majority of hydrogen sulfide corrosion resistance tests are in the manual stage, and most of them still use traditional thermometers and pressure gauges. Through manual inspections, operators manually change the chemical reaction conditions according to the instrument indications reflecting the main process parameters. , the production process is based on experience alone

Manual operation, not only the labor intensity of the operator is high, the control accuracy is not high, but hydrogen sulfide is a flammable and highly toxic gas, and if it is not operated properly, it is easy to cause safety accidents

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