Seeking advice on high availability for chloride and sulfate ions in 2205
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I’m seeking advice from fellow sailors: can 2205 be used in the following application conditions? Chloride ions at 9000 ppm, sulfate ions at 9000 ppm, pH of 3–4, temperature of 30–40 degrees; the main components are calcium sulfate, sulfuric acid, and calcium chloride. Need help – what material should be chosen for this application?
I mean, under such operating conditions, carbon steel can be used for the equipment, while corrosion-resistant materials can be employed as protective coatings on the parts that come into contact with the medium. It is possible to solve the problem right away with low investment, achieving the best cost-performance ratio.
Thank you for the guidance. I didn’t explain the operating conditions clearly enough; for these conditions, a cooling coil was specified for this medium, but heat transfer cannot be ensured when using a fluorinated lining, so I want to use a metal material instead
For the heat exchange coils in the furnace tubes, carbon steel with an anti-corrosion coating can be used to facilitate coating application.
Is it the heat exchange coil in the reactor? A squirrel-cage graphite heat exchanger can be used in the reactor for heating or cooling.
I’ve heard of cage-type graphite heat exchangers for the first time. Does stirring affect their performance? Could you provide some information on this?
The advantages of the cage-type graphite heat exchanger include high heat transfer efficiency, strong corrosion resistance, the ability to design heat exchangers with large surface areas, reduced production cycles, lower energy consumption, and a long service life (over four years under normal use). The structure of the cage-type graphite heater can be designed as a tubular type, consisting of upper and lower covers, upper and lower tube sheets, graphite tubes, baffle plates, and other components bonded together ； It can also be made in the form of a block with holes, consisting of upper and lower end caps, an intermediate heat exchange block, and inlets and outlets for the heat carrier. A squirrel-cage graphite heat exchanger is installed in the reactor, and an agitator paddle can be used. The structural format of the cage-type graphite heat exchanger is shown in the figure below:
Hastelloy materials can meet the requirements of operating conditions
This operating condition is similar to that of gypsum desulfurization; 2205 works fine