Kinds of zirconium tube heat exchanger, including vertical set and the upper and lower end are open shell, as described in the top of the cylinder exposure in seal set on tube sheet, described seal with end on tube sheet on the head, the tube sheet in the above mentioned cavity is formed between the head and referred to the lower end of the cylinder exposure tube plate, under seal Settings are described under the lower tube plate seal set up under the head, The lower cavity body is formed between the tube plate and the lower head, and the upper cavity body is communicated with the lower cavity body through a plurality of heat exchange tubes through the cylinder body; Among them, the upper surface of the tube plate explosion composite zirconium sheet, the lower surface of the tube plate explosion composite zirconium plate, the upper head, the lower head and the heat exchange tube are made of zirconium material. The invention uses zirconium as heat transfer medium, and makes high temperature acid bath in direct contact with zirconium. The corrosion rate of zirconium is less than 0.0025mm/a, so as to reduce the corrosion rate, avoid safety risks, improve production efficiency and reduce costs.
The beneficial effects are: The zirconium tube heat exchanger of the invention uses zirconium as heat transfer medium, the material of the upper and lower tubes is zirconium composite, the upper and lower heads and heat exchange tubes are made of zirconium, the barrel body is made of 316L stainless steel, so that the high temperature acid bath is in direct contact with the zirconium, the corrosion rate of the zirconium is < 0.0025mm/a, and the high temperature steam contact surface is stainless steel 316L. This makes the service life of the new zirconium tube heat exchanger estimated at least 10 years, can prolong the maintenance cycle, improve production efficiency, can reduce manual maintenance intensity, reduce equipment maintenance costs, significantly reduce maintenance costs.
And the upper and lower tube plate or other components in the explosion of composite zirconium plate, can be first in the corresponding surface explosion composite layer of titanium plate, in the surface of the titanium plate and then explosion composite layer of zirconium plate. In which the effect of titanium plate is play the role of transition layer, adhesive, surface of zirconium to compound steel plate, the practice of the study found that zirconium plate and steel plate in explosive composite, the corresponding atoms can't mutual confluence, cannot achieve the requirements of the composite, so I need a to zirconium compound to the plate and compound to the steel plate material, titanium plate can be perfect to complete the task. Is the function of zirconium and zirconium board acid, alkaline liquid corrosion rate is extremely low, zirconium high wear resistance strength, its relative corrosion resistance of steel lining rubber has obvious, won't appear all sorts of problems existing in the existing technology, and the service life of the steel lining plastic increased dramatically, which reduces the repair or replacement of equipment the cost of labor and materials.
