What are the main inspection and control parameters for commonly used chemical processing equipment?

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(Chemical Equipment) A general term for the machines and equipment used in the chemical industry. In chemical production, in order to transform raw materials into finished products of specific specifications, a series of chemical processes are often required, including raw material preprocessing, chemical reactions, as well as the separation and purification of the reaction products. The machinery used to carry out these processes is generally classified as chemical equipment. Chemical processing equipment can generally be divided into two major categories: ① Chemical processing machines. It refers to machinery whose main functional component is motion, such as various filters, crushers, centrifuges, rotary kilns, mixers, rotary dryers, and fluid transport machinery. ②Chemical processing equipment. It refers to machinery in which the main functional components are stationary or move only slightly, such as various containers (tanks, vats, etc.), ordinary kilns, towers, reactors, heat exchangers, conventional dryers, evaporators, reaction furnaces, electrolytic cells, crystallization equipment, mass transfer equipment, adsorption equipment, fluidization equipment, conventional separation equipment, and ion exchange equipment. The classification of chemical engineering machinery is not strict; some fluid transfer machines (such as pumps, fans, and compressors) are often referred to as chemical engineering machinery in the chemical industry, but at the same time they are also general-purpose machines used in various industrial processes. The design and manufacture of modern chemical engineering equipment rely not only on the advancements in mechanical engineering and materials engineering, but are also closely linked to the development of chemical processes and chemical engineering. The quality, output, and cost of chemical products depend to a large extent on the sophistication of the chemical equipment, and the characteristics of such machinery must be able to cope with the special conditions commonly encountered in chemical processes, such as high temperatures, high pressures, high vacuums, ultra-low pressures, flammability, explosiveness, and strong corrosivity. The modern chemical industry requires chemical processing machinery to: ① possess safety and reliability for continuous operation. ②It possesses sufficient mechanical strength under certain operating conditions (such as temperature, pressure, etc.). ③It has excellent corrosion resistance. ④It has good sealing properties. ⑤High efficiency and low energy consumption. Pressure vessel: In industrial production, devices that have specific functional roles and are subject to certain pressures are referred to as pressure vessels. Storage and transportation containers, reaction vessels, heat exchange vessels, and separation vessels all fall under pressure vessels. To distinguish them from ordinary containers (atmospheric pressure containers), only those containers that meet all of the following three conditions can be referred to as pressure vessels: (1) The maximum operating pressure (Pw) (Note 1) is greater than or equal to 0.1 Mpa (excluding hydrostatic pressure; the same applies hereafter); (2) The inner diameter (for non-circular cross-sections, this refers to their largest dimension) is greater than or equal to 0.15 m, and the volume (V) (Note 2) is greater than or equal to 0.25 m3; (3) The medium contained is a gas, a liquefied gas, or a liquid whose maximum operating temperature is greater than or equal to its standard boiling point. Pressure vessels have a wide range of applications. It is a device that plays an important role in various sectors of the national economy, such as the petrochemical industry, energy industry, scientific research, and the military industry. A pressure vessel generally consists of six main parts that make up its body: the cylinder, the head, flanges, sealing elements, openings and nozzles, and supports. In addition, it is equipped with safety devices, meters, and internal components that enable various manufacturing processes. Due to reasons such as sealing, pressure resistance, and the type of medium contained, pressure vessels are prone to explosions and fires, which can endanger the safety of people, equipment, and property as well as cause environmental pollution. Currently, countries around the world consider it an important product subject to supervision and inspection, with **designated specialized agencies carrying out supervision, inspection, and technical testing in accordance with** established regulations and standards. Source: China Chemical Equipment Brands Network