Safety guidance method for constant-temperature dehydrogenation operation of hydrogen contact equipment in processes of startup and shutdown
A technology for hydrogenation equipment and dehydrogenation, which is used in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve problems such as irregular safety guidance and poor safety, and achieve the purpose of preventing unplanned shutdown of equipment, preventing hydrogen damage, and good technology. effect of effect
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Embodiment 1
[0036] A safety guidance method for constant temperature dehydrogenation operation during start-up and shutdown of hydrogen equipment, including the following four aspects:
[0037] 1. Reasonably formulate the basic principles and schemes of dehydrogenation operation
[0038] On the premise of reasonable selection of materials for the hydrogenation system, standardize the process operation of the hydrogenation unit during the start-up and shutdown process, especially the speed and time of temperature rise and fall, pressure rise and fall, and lifting and lowering of the hydrogenation equipment during the start-up and shutdown process, so as to ensure that the equipment The basic principle for the successful completion of dehydrogenation treatment.
[0039] In addition to following this safety guidance method, the enterprise can, according to the actual situation, make overall considerations to increase the inspection and testing of hydrogenation equipment during the start-up a...
Embodiment 2
[0072] According to the conditions and steps described in Example 1, the method was used for the safety guidance of the constant temperature dehydrogenation operation in the process of starting and shutting down the equipment made of 2.25Cr-1Mo material.
[0073] Process operation during start-up process:
[0074] 1 device boost limit
[0075] 1.1 When the equipment (including reactors, thermal high-pressure separators, and high-pressure heat exchangers) is started for the first time, in any stage, such as airtightness, drying, vulcanization, normal operation, etc., the minimum boosting pressure of the equipment wall The temperature MPT (measured by the surface thermocouple) is determined according to the following requirements:
[0076] The performance data of base metal and welded joints of the welding test plate and welded joints of the first start-up of the equipment are as follows:
[0077] J coefficient ≤ 100;
[0078] X factor ≤ 15;
[0079] FATT=0℃~-90℃;
[0080] ...
Embodiment 3
[0108] According to the conditions and steps described in Example 1, the method is used in the safety guidance of the constant temperature dehydrogenation operation in the process of starting and shutting down the equipment made of 2.25Cr-1Mo-0.25V material.
[0109] Process operation during start-up process:
[0110] 1 device boost limit
[0111] 1.1 When the equipment (including reactors, thermal high-pressure separators, and high-pressure heat exchangers) is started for the first time, in any stage, such as airtightness, drying, vulcanization, normal operation, etc., the minimum boosting pressure of the equipment wall The temperature MPT (measured by the surface thermocouple) is determined according to the following requirements:
[0112] The performance data of the base metal and welded joints of the welding test plate of the equipment product are:
[0113] J coefficient ≤ 100;
[0114] X factor ≤ 15;
[0115] FATT=0℃~-90℃;
[0116] The minimum pressurization temperat...
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