Do you understand what is a special metal pressure vessel?

Special metal pressure vessels are a comprehensive product involving multiple industries and disciplines and are widely used especially in the chemical industry. Although it seems to have little to do with our lives, we also need to understand what exactly is a special metal pressure vessel.

Here is the content list:

1. How to divide the special metal pressure vessel species?

2. How to check the special metal pressure vessel?

3. How to maintain special metal pressure vessels?

How to divide the special metal pressure vessel species?

Special metal pressure vessels are divided into reaction pressure vessels, heat exchange pressure vessels, separation pressure vessels, and storage pressure vessels according to the principle of their role in the production process. Specific divisions are as follows.

(1) Reaction pressure vessel (code R): mainly used to complete the physical and chemical reaction of the medium of special metal pressure vessels, such as reactors, reaction kettles, decomposition kettles, vulcanization tanks, decomposition towers, polymerization kettles, autoclaves, ultra-high-pressure kettles, synthesis towers, transformation furnaces, cooking pots, steam balls, autoclaves, gas generating furnaces, etc.

(2) Heat exchange pressure vessel (code E): mainly for the completion of the medium of heat exchange of special metal pressure vessels, such as shell and tube waste heat boilers, heat exchangers, coolers, condensers, heaters, sterilization pot, dyeing apparatus, drying cylinder, steam frying pan, preheating pot, solvent preheater, steam pot, steam off the machine, electric steam generator, gas generator water jacket, etc.

(3) Separation pressure vessel (code S): mainly used to complete the medium of fluid pressure balance buffer and gas purification and separation of special metal pressure vessels, such as separators, filters, oil collectors, buffers, scrubbers, absorption towers, copper washing towers, drying towers, steam towers, sub-vapor cylinders, deaerators, etc.

(4) Storage pressure vessel (code C, where the spherical tank code B): mainly for storage, holding gas, liquid, liquefied gas, and other media of special metal pressure vessels, such as various types of storage tanks.

How to check the special metal pressure vessel?

1. External inspection

Also known as the operation of the inspection, the main content of the inspection are: pressure vessel external surface cracks, deformation, leakage, local overheating, and other abnormalities; safety accessories are complete, sensitive, reliable; fastening bolts are intact, all screwed; the foundation is not sinking, tilting and anti-corrosion layer is not damaged and other abnormalities. External inspection is the work of both the inspector and the operator's daily tour inspection program. Found safety-threatening phenomena (such as cracks in pressurized components, deformation, serious leakage, etc.) should be shut down and promptly reported to the relevant personnel.

2. Internal and external inspection

Special metal pressure vessel internal and external inspection of this test must be cleaned in the parking and internal cleaning of the vessel can be carried out. In addition to the main content of the inspection, including all the external inspection, but also to test the internal and external surface corrosion and wear phenomenon; with the naked eye and magnifying glass on all welds, head transition zone, and other stress concentration parts to check for cracks, if necessary, using ultrasonic or ray flaw inspection weld internal quality; measurement of wall thickness.

3. Comprehensive inspection

Special metal pressure vessel comprehensive inspection in addition to the above inspection items, but also to carry out pressure tests (generally hydraulic test). Non-destructive testing of the main weld seam sampling or all weld inspection. But the pressure is very low, non-flammable or non-toxic, non-corrosive media containers, if no defects are found, after a certain amount of experience, may not be non-destructive flaw detection inspection.

How to maintain special metal pressure vessels?

A large number of special metal pressure vessels used in the chemical industry, due to the corrosiveness of the medium, reaction conditions hot and cold, transportation, use, man-made problems, there will always be such and such enamel layer damage, resulting in unnecessary production stop, such as a large area off, it is recommended that only return to the factory re-enamel. Special metal pressure vessel price is high, tiny damage when there is no need to update the whole equipment, which requires the selection of suitable repair method, with (Jinsu Cheng) JS916 immediately for repair, otherwise, it will make the special metal pressure vessel by the container solvent corrosion, enamel surface damage will rapidly expand, and the resulting production stoppage, safety accidents, and environmental pollution and other unpredictable losses.

Nanjing Suntech Metal Equipment Co., Ltd. conducts many tests on special metal pressure vessels before they leave the factory, and the quality qualification rate is guaranteed. If you are in the special metal pressure vessels business, you can consider our cost-effective products.