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   A WORLD'S LEADING SURFACE ENHANCEMENT TECHNOLOGY

      CTS is a surface enhancement technology by in situ surface modifications of stainless steel through chemical-electrochemical methods. It improves the corrosion resistance and anti-coking performance of stainless steel greatly.  

      CTS technology is developed to solve the widespread problems of equipment corrosion and coking in the industrial environments. It is for industries with complex corrosive media and wide temperature and pressure ranges such as in petrochemical, coal chemical, marine, electric power, and metallurgy industries. It allows more selections compared with traditional materials. CTS technology can effectively slows down the corrosion of equipment by chlorine, sulfur (sulfide), and organic acid (naphthenic acid). It is also characterized by anti-coking and anti-scaling, etc., thereby meeting the needs of industrial equipments in terms of safety, cost reduction, and efficiency improvement.

                                                      Pitting resistance index of film （PREN）：≥40

                                                      Film thickness:≥100nm

                                                      Film adhesion: Thermal shock test (450 ℃): the film shall not bubble or fall off

                                                      FeCl₃ corrosion test: The corrosion rate is less than 1/3 of the base material

                                                      Film appearance: The primary color of stainless steel disappears and it appears in color.

After years of industrial testing and application, it has been proved that the technology is safe, reliable, stable and excellent in performance.

The chromium oxide content in the film is as high as more than 70% (wt), and the pitting resistance index (PREN) reaches 40 ~ 58.

The service life of the equipment can be prolonged to 2 ~ 5 production cycles

The capacity of the surface of the material to absorb ions is greatly reduced, which can effectively alleviate the tendency of scaling and coking in the system.

        It can improve the service life of equipment by 200%-500% and reduce the initial cost and the replacement cost of equipment.

        It can maintain the continuous stability of the mass transfer and heat transfer performances of material surface, avoid the efficiency reduction of equipment in long-term operation, ensure a long-term, safe, and stable operation of equipment, and reduce the operating costs.

        A stable processing performance makes equipment maintenance and prediction more accurate, and avoids losses caused by accidents.

        The safe operation index of the whole system is improved, the metal ions with adverse effects in the system are greatly reduced, and other subsystems, such as catalysts, are protected for longterm.

        It reduces the discharge of solid wastes and hazardous wastes, and the use of chemical cleaning agents, that makes it safer and more friendly to the environment.

         CTS technology is widely used in:

       Petrochemical, coal chemical, marine engineering, electric power, metallurgy and other industrial fields;

       410S/304/304L/321/316/316L/317/317L/904L/2205/2507/N03867 ferritic stainless steel, austenitic stainless steel, duplex steel and super stainless steel;

       Internals, heat exchangers, pipes, containers, moving equipments (pump impellers), etc.

 According to customer needs, we can provide CTS technology surface treatment services for customers;

 We can also provide customers with CTS-treated internals and equipments.

Transportable parts and equipment can be delivered to Candor’s plant for treatment;

Large-sized equipment (containers, etc.) , that cannot be moved, can be treated at customers’ site.

 A liquid distributor is the core component of the packed tower, which is of great significance to improving the separation efficiency, ensuring product quality, and increasing the product yield. As a patented product of Candor (Patent No.: ZL99248216.X), compared with the traditional narrow trough liquid distributor, the three-stage baffle narrow trough liquid distributor can improve distribution efficiency by 10% ~ 50%, and a very uniform and continuous liquid film formed at the bottom edge of the guide plate, especially in case of low liquid volume. It is also capable of generating uniform droplets parallel to the trough and at the bottom edge of the guide plate. The lower the liquid head is, the greater the efficiency is improved. This structure allows effective coordination and selection on hole number, hole diameter, and hole spacing on the trough, in order to meet the requirements of uniform liquid distribution and design elasticity. In case of very low liquid volumes, the three-stage guide plate is also provided with concave pits arranged according to a certain rule, which can eliminate the uneven distribution caused by the contraction of liquid on the metal surface and partially eliminate the unevenness caused by the levelness error when the distributor is installed in industry.
      Highlights of three-stage guide plate trough liquid distributor:
      1. Good distribution performance.
      2. High elasticity of operating loads.
      3. Good cushioning performance.
      In 2001, the patented technology of three-stage guide plate liquid distributor of Candor was successfully applied to the vacuum tower of a 8 million tons/year atmospheric and vacuum distillation plant in the refinery of Sinopec Shanghai Gaoqiao Branch, which had the largest tower diameter (10.2 m) in that year in China. The team won the Sinopec Science and Technology Progress Award in May 2005 because of the excellent performace of the unit.

      Process design and optimization

      Equipment design and selection

      On-site services