A method for manufacturing a composite steel plate for a hydrogenation reactor cylinder

Abstract

The invention discloses a method for manufacturing a composite steel plate for a hydrogenation reaction kettle barrel, and belongs to the field of metal materials. The method includes processing a common carbon steel material with the thickness ranging from 300mm to 600mm and a stainless steel material with the thickness ranging from 10mm to 60mm into blanks with identical lengths and identical width at first; overlapping clean surfaces of the blanks; welding peripheries of the blanks by a welding process combining gas shielded welding, submerged arc welding and vacuum electron beam welding; then heating a composite blank welded in the previous step and rolling composite blank by a heavy and medium plate mill to form the carbon steel and stainless steel composite plate with the thickness higher than 100mm; and finally using the carbon steel and composite plate for manufacturing the hydrogenation reaction kettle barrel. The composite steel plate is excellent in physical performance, corrosion resistance and high-pressure resistance, and requirements of manufacture of the hydrogenation reaction kettle barrel are met completely.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a method for manufacturing a composite steel plate for a cylinder body of a hydrogenation reactor. Background technique [0002] With the continuous advancement of science and technology, sorbitol, xylitol and other products required by the chemical and pharmaceutical industries are all produced using hydrogenation reactor equipment. At present, the large-scale equipment is an inevitable trend of its development. The larger the volume of the reactor, the stricter the requirements for the working pressure and temperature in the production process. For example, for 30m 3 The working pressure of the hydrogenation reactor should reach 15MPa and the working temperature should reach 200℃. Although the general carbon steel and enamel structure reactors can meet the requirements of pressure and working temperature, their corrosion resistance is far from meeting the needs of pr...

AI Technical Summary

Problems solved by technology

Although general carbon steel and enamel structure reactors can meet the requirements of pressure and working temperature, their corrosion resistance is far from meeting the needs of production; if the reactors are all made of stainless steel, although they can meet the requirements of corrosion resistance and working temperature , but its working pressure cannot meet the requirements. In order to make its pressure meet the design requirements, the thickness of the stainless steel reactor cylinder must reach more than 100mm, so that its cost will be greatly increased, which is more than three times that of ordinary carbon steel.

[0003] Patent CN101584975A ​​"Hydrogenation Reactor Cylinder" proposes the technology of producing the hydrogenation reactor cylinder from carbon steel layer and stainless steel layer using explosive process composite plate, which can effectively solve the above problems, and the explosive composite process is to use explosives The huge impact force generated by the explosion makes the two materials combine together, which will generate huge noise and affect the surrounding environment; at the same time, due to the explosion compounding, the performance of the base material (toughness, impact performance, etc.), explosive performance (stability of detonation velocity, safety, etc.), The initial parameters (the amount of explosive per unit area, the spacing between base and double plates, etc.) and dynamic parameters (collision angle, double plate collision speed) are closely matched with the system parameters, and the yield and quality of the composite plates are difficult to control precisely; High, the larger the size of the clad plate, the higher the requirements and costs of explosive cladding, the production of large-size clad plates by this method is subject to certain restrictions

Images