The discipline of chemical process machinery is an interdisciplinary subject formed by applying the scientific principles of chemical engineering and technology, energy science and technology, mechanical design and manufacturing, and control engineering to the process industry. At the same time, basic scientific principles such as mathematics, physics and chemistry are applied. It is a new subject that studies the process production device and comprehensively applies the current punishment control technology.
In the major you mentioned, chemical engineering is related to technology and pressure vessels.
Question 2: Does pressure vessel belong to machinery industry? What are the prospects? It belongs to the machinery industry and has a bright future.
Question 3: I want to find the manufacturer of pressure vessels, and I don't know which industry category it belongs to. It seems to be a special equipment, but I can't find it. Please point out that the boiler is a pressure vessel, and the boiler is made of general equipment (code: 34 1). See the national economic industry classification (20 1 1) for details. Special equipment is classified according to the index of safety supervision department, which has nothing to do with industry classification. If there is a boiler, special equipment inspection is needed, and the local quality supervision department can be consulted for specific monitoring.
Question 4: 1, what industry and what type of units use pressure vessels. (that is, the pressure vessel using unit)? Power supply containers are used in chemical industry, food industry, etc., but the equipment needs to issue supervision and inspection certificates, and also need to be stamped with steel seals and supervision and inspection certificates. . When in use, declare the installation and annual inspection to the local quality and technical supervision bureau. ....
Question 5: What are the upstream and downstream industries of pressure vessels? Upstream industries are generally refineries and chemical plants.
Downstream industries are the materials used to manufacture pressure vessels, such as steel mills, forging yards, standard parts lengths and some machining yards!
Question 6: What kind of pressure vessel 1 is? Overview.
In industrial production, equipment with specific process function and bearing certain pressure is called pressure vessel. Storage and transportation vessels, reaction vessels, heat exchange vessels and separation vessels are all pressure vessels.
In order to distinguish it from ordinary vessels (atmospheric vessels), only vessels that meet the following three conditions are called pressure vessels:
(1) Maximum working pressure ≥ 9.8104 Pa (1kgf/cm2);
(2) The volume is ≥25L, and the product of working pressure and volume is ≥ 200Lkgf/cm2 (1960104L PA);
(3) The medium is gas, liquefied gas or liquid with the highest working temperature higher than the standard boiling point.
Pressure vessels are widely used. It is a kind of equipment that plays an important role in petrochemical industry, energy industry, scientific research and military industry.
Generally speaking, a pressure vessel consists of six parts: cylinder, head, flange, seal, opening, nozzle and bracket. In addition, it is equipped with safety devices, instruments and internal parts to complete different production processes.
Pressure vessels are prone to explosion and fire due to sealing, bearing pressure and medium, endangering the safety of personnel, equipment and property and polluting the environment. At present, all countries in the world have listed it as an important supervision and inspection product, and the specialized institutions designated by the state conduct supervision and inspection and technical inspection in accordance with the regulations and standards stipulated by the state.
classify
There are many classification methods for pressure vessels. From the perspective of use, manufacture and supervision, there are the following.
(1) is divided into low-pressure vessels, medium-pressure vessels, high-pressure vessels and ultrahigh-pressure vessels according to the pressure grade.
(2) According to the medium, it is classified as non-combustible and non-toxic; Flammable or toxic; Highly toxic.
(3) According to the different functions in the process, it can be divided into:
① Reaction vessel: a vessel used to complete the physical and chemical reactions of the medium.
② Heat exchange container: a container used for heat exchange of medium.
③ Separation vessel: a vessel used for mass exchange of medium, gas purification and solid, liquid and gas separation.
④ Storage and transportation container: a container for holding liquid or gas materials, storage and transportation media or balancing and buffering pressure.
(4) In order to carry out scientific management and safety supervision and inspection more effectively, China's "Regulations on Safety Supervision of Pressure Vessels" divides pressure vessels into three categories according to the working pressure, the harmfulness of medium and its role in production. There are different regulations on the design, manufacturing process, inspection items, contents and methods of each pressure vessel.
Pressure vessels shall be subject to the safety and quality licensing system for imported goods, and goods that have not obtained the import safety and quality licensing certificate shall not be imported.
Question 7: What will be the final development trend of pressure vessel industry and will it be replaced? Pressure vessels are widely used in many industries, such as chemical industry, medicine, energy, heating and refrigeration. It is also widely used, including heat exchange, reaction, separation, storage and so on. Therefore, the development of pressure vessels has no ultimate goal, and nothing can replace all pressure vessels.
Question 8: What are the special equipment and how is the concept of pressure vessel defined? The following is the list and code name of special equipment published by AQSIQ:
1000 boiler100 pressurized steam boiler 1 165438 utility boiler 1 120 industrial boiler 1 130 household. 8+03 10 organic heat carrier gas phase furnace 1320 organic heat carrier liquid phase furnace B 100 boiler part B2 10 header b10 steam drum B 120 header b/kloc. Boiler economizer B 160 boiler membrane wall C 100 boiler material c10 boiler steel plate C 120 boiler steel pipe C 130 special equipment welding material 2000 pressure vessel 2 100 fixed pressure vessel 2. Container 2 120 high-pressure container 2130 class Ⅲ medium-pressure container 2140 class Ⅲ low-pressure container 2150 class Ⅱ medium-pressure container 2160 class Ⅱ low-pressure container 2170 class Ⅰ pressure container 2200 mobile pressure container 22/kloc Automobile 2230 long tube trailer 2240 tank container 2300 gas cylinder 23 1 0 seamless gas cylinder 2320 welded gas cylinder 2330 liquefied petroleum gas cylinder 2340 dissolved acetylene gas cylinder 2350 vehicle gas cylinder 2360 low temperature insulated gas cylinder 2370 wound gas cylinder 2380 non-refillable gas cylinder 230 special gas cylinder 2400 oxygen chamber 246543 8+00 medical oxygen chamber 2420 high pressure chamber 2430 recompression pressure vessel material C2 10 steel plate C230 gas cylinder C240 steel tube 8/0 gas cylinder. Transportation (oil and gas) pipeline 8 1 10 petroleum pipeline 8 120 natural gas pipeline 8200 public pipeline 82 10 natural gas pipeline 8220 thermal pipeline 8300 industrial pipeline 83 10 process pipeline 8320 power pipeline 8330 refrigeration pipeline 7000 pressure pipeline element 7 Sub-7 1 10 seamless steel pipe 7 120 welded steel pipe 7 130 non-ferrous metal pipe 7 140 cast iron pipe 7 1F0 nonmetallic material pipe 7200 pressure pipe fitting 72 10 seamless pipe fitting 7220 seamless. 0 header 7260 filter 72F0 nonmetallic pipe fitting 7300 valve 73 10 safety valve 7320 pressure regulating valve 7330 regulating valve 7340 gate valve 7350 ball valve 7360 butterfly valve 7370 stop valve 7380 check valve 7390 drain valve 73A0 diaphragm valve 73f0 ... >; & gt
Question 9: Is the pressure vessel operation certificate a qualification certificate? Hello, the pressure vessel operation certificate is a post operation qualification certificate, but it is not necessarily related to special types of work.
The special type of work of the enterprise shall be implemented according to the relevant documents submitted by the competent department of industry to the labor department for examination and approval. There is a list of special jobs in the file reply. Some jobs in the list are special jobs, and what is not in the list is not special jobs. Labor departments at all levels and enterprise labor departments hold such documents, and special types of work cannot be implemented by reference among industries, but only by industries.
There are still questions to ask.
Question 10: How about working in a pressure vessel? What is the development status of this industry in China? What is the personal development path? As far as I know, the employment prospects of smelting industry and container specialty are good. If you want to develop your career faster, go to the refinery, and if you want to make technological progress, go to the big design institute. However, no matter where it is, it is still a bit hard, especially in design institutes. After you get a job, you have to endure 10 years of loneliness to get out slowly. I have studied several mechanics courses, but in order to determine the wall thickness, I may not be able to determine it accurately, hehe, the technical content is not good. In addition, there are too many things to learn, such as theoretical basis, technological process, domestic standards, materials, corrosion, manufacturing, welding, ASME, API, NACE, company standards of international oil companies and so on. This industry is hard, but the income is passable. This circle is not big. As long as you have perseverance, becoming an expert is not out of reach.
Any unit has a main business, so it has a core department, so it is worth mentioning that it is employed in a manufacturing factory. Only when you are employed in a factory, the container specialty is the leader, and you can serve the craft in an oil refinery and a design institute. However, the competition among manufacturers is fierce. Except for a few manufacturers, the treatment is generally not as good as that of refineries and design institutes.