ICNEA 3521—Manufacturing of special equipment for refining and chemical production

Where 3521 sits

1. C Manufacturing industry
2. 35 Special equipment manufacturing industry
3. 352 Manufacturing of special equipment for chemical, wood, and non-metallic processing
4. 3521 Manufacturing of special equipment for refining and chemical production

What 3521 includes

• Refers to the manufacture of special equipment for the production of petroleum refining and chemical industries, but does not include the manufacture of general equipment such as packaging machinery.
• Including the manufacturing activities of the following special equipment for refining and chemical production：
• Heat exchange device;
• Floating head tubular heat exchanger: graphite floating head tubular heat exchanger, other floating head tubular heat exchangers;
• Reforming heat exchanger;
• Hydrogenation heat exchanger: threaded locking ring hydrogenation heat exchanger, other hydrogenation heat exchanger;
• Round block hole heat exchanger: graphite round block hole heat exchanger, other round block hole heat exchanger;
• Rectangular block hole heat exchanger: graphite rectangular block hole heat exchanger, other rectangular block hole heat exchanger;
• Spiral plate heat exchanger, sprinkler heat exchanger, sleeve heat exchanger, disc heat exchanger;
• Tubular reboiler: graphite floating head tubular reboiler, other tubular reboilers;
• Other heat exchange devices;
• Tower equipment: packing tower, sieve tower, blister tower, floating valve tower, floating jet tower, condensing tower, adsorption tower, other tower equipment;
• Reactor (kettle): high pressure reactor, polymerization reactor, alkylation disproportionation reactor, resin reactor, rotary cylinder reactor, multifunctional dispersion reactor, hydrogenation reactor for petrochemical industry (hydrogenation reactor for plate welding structure, hydrogenation reactor for forging welding structure),Other reactors (kettle);
• Chemical special furnaces: conversion furnaces, steam calciners, synthesis furnaces, ethylene cracking furnaces, calcium carbide furnaces, alkanylation furnaces, waste heat boilers, boiling dry ammonia furnaces, boiling cold alkali furnaces, and other chemical special furnaces;
• Mixing and mixing equipment: double spiral double cone mixer, static mixer, other mixing and mixing equipment;
• Liquid transportation machinery for chemical industry: liquid ring pump, shielded pump for chemical industry, inner arc gear conveying pump, high viscosity rotary piston pump, volute radial flow pump, circulating water pump, ceramic supernatant pump, other liquid transportation machinery for chemical industry;
• Manufacture of other unspecified special equipment for refining and chemical production;
• The following product manufacturing activities are included in this category;
• Intelligent control system of complete refinery equipment;
• Intelligent control system of complete chemical equipment;
• Million-ton large-scale ethylene plant (with online detection, optimization control, functional safety and other functions);
• Tens of millions of tons of large-scale oil refining plant (with online detection, optimization control, functional safety and other functions);
• Multi-cogeneration coal chemical equipment (with online detection, optimization control, functional safety and other functions);
• Synthetic rubber and plastic production equipment (with online testing, optimization control, functional safety and other functions);
• CNC system for polyester fiber staple fiber weaving;
• Oil-salt heat exchanger;
• Steam generator;
• Biofuel ethanol and supporting product cogeneration equipment (refers to non-food crop biofuel ethanol);
• New agroforestry crop biomass energy production equipment;
• Green biodiesel refining equipment;
• Biomass pyrolysis and gasification fuel equipment;
• Biomass hydrogen production and microbial hydrogen production equipment;
• Energy-saving heat exchange device;
• Energy-saving chemical special furnace.

What 3521 excludes

• The manufacture of general equipment for refining and chemical industry, such as pumps, fans, and boilers, are included in the corresponding industries in the 34 categories (general equipment manufacturing);
• The manufacture of pressure vessels (except fiber reinforced plastic pressure vessels) is included in 3332 (metal pressure vessel manufacturing);
• The manufacture of drying equipment is included in 3499 (other general equipment manufacturing industries not specified);
• The manufacture of crushing and grinding machinery is included in 3511 (Mining machinery manufacturing);
• Packaging machinery manufacturing, included in 3467 (special equipment manufacturing for packaging);
• Special equipment for the daily chemical industry, included in 3543 (manufacturing of special equipment for the daily chemical industry).

3521 in other systems