In industrial production, pressure vessels are widely used in gas or liquid storage and reaction scenarios, covering chemical, petroleum, electricity, food, pharmaceutical and other industries. The correct selection of pressure vessels is not only related to production efficiency, but also directly affects the safety and service life of the equipment. Due to different requirements for the structure, material and performance of the container under different use conditions, this article will focus on the three core parameters of "working conditions, media, and temperature" to provide you with a set of practical pressure vessel selection guides.

1. Determine the design pressure and volume according to the working conditions

Working condition parameters are the basis for the selection of pressure vessels. First, it is necessary to clarify the working pressure, design pressure and working medium state (gaseous, liquid or mixed state), and determine the design category and structural form of pressure vessels in combination with the working mode of the equipment (continuous operation or intermittent operation), frequency of use and place of use (indoor, outdoor, plateau, etc.). For example, a storage tank that needs to withstand high-pressure gas for a long time should use a thick-walled cylindrical structure and adopt a reinforced head form to enhance the pressure resistance.

2. Select appropriate materials according to the type of medium

Different media have different corrosiveness, toxicity and reactivity to pressure vessels. For ordinary compressed air or inert gas, carbon steel materials can be used; but if corrosive media such as acidic media, chlorine, organic solvents, etc. are involved, stainless steel, Hastelloy, titanium or composite lining structures must be used to ensure the corrosion resistance and long-term stable operation of the container. In addition, whether the medium is flammable and explosive also determines the configuration of safety accessories, such as safety valves, bursting discs and anti-static devices.

3. Optimize structure and process according to working temperature

Temperature is an important factor affecting the structural design and material selection of pressure vessels. In high temperature environments (>350℃), the container needs to consider the high temperature strength and creep performance of the material, while in low temperature conditions (such as liquid nitrogen storage tanks), it is necessary to avoid material embrittlement and select low temperature special steel. Containers under high temperature and high pressure often need heat treatment and pressure resistance testing to meet regulatory requirements.

The selection of pressure vessels must comprehensively consider the working conditions, medium characteristics and temperature range to ensure that the selected equipment is both safe and reliable, and economical and efficient in actual application. It is recommended to communicate closely with pressure vessel manufacturers with design qualifications and industry experience during the selection stage to jointly develop the most appropriate solution.