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Viscosity = 125 cP (approx.) at -30 deg C - Very close to the freezing point Source: H2SO4 Atlas, Lurgi

I would not recommend using external steam pad heating system for such a large above ground molten sulphur storage tank. Sulphur has a very low thermal conductivity so it will be very difficult to keep the centre of the tank at the required temperature. My recommendation is to use heat coils...

See the isocorrosion curve at the following website: http://www.sulphuric-acid.com/TechManual/Corrosion/300SS.htm

Addition of concentrated sulphuric acid into water to form a weak acid solution should be done in PTFE lined pipe. The high temperature and weak acid concentration is extremely corrosive to most metals. The lined pipe should extend from the injection point through to the static mixer and...

In the publication "Sulphur" March 1993 there is an article that talks about the use of microwaves for recovery of sulphur from waste gas containing H2S. This research used a microwave discharge to generate "cold" non-equilibrium plasma that dissociates hydrogen sulphide into hydrogen and...

I got the information from an early version of NACE RP0294-94 Design, Fabrication, and Inspection of Tanks for the Storage of Concentrated Sulfuric Acid and Oleum at Ambient Temperatures

One of the early NACE recommended practices for sulphuric acid storage tank does not recommend the following steels for use for sulphuric acid storage tanks: A285, A283, A515, A36. No reason is given. The following grades should be considered: A516, A573, A662, A131 Gr. B, all normalized over 3/8"

The plant is a small sulphur burning plant operated by Cameco in norther Saskatchewan, Canada. Sorry no contact information.

Further to my previous reply. A sulphur storage tank designed for a small acid plant located in Canada was equipped with four (4) 2" dia. nozzle for snuffing steam. The nozzles are located on the tank roof. The tank is 30 ft dia. x 26 ft high. I don't know the basis for the number and size...

Found the report of the Committee on Handling and Conveying of Dusts, Vapors and Gases. The requirement of NFPA 655 4-4.1 (b) is based on the following: "This recommendation brings the steam flooding requirements in line with NFPA 86. The recommendation is based on 1934 FMRC fire test of a...

I designed a liquid SO2 plant back in the late 1980's which had two storage tanks and railcar loading. We used Micromotion mass flow meters to measure liquid SO2 during loading operations. The flow meters were not set up for custody transfer because the site had railcar scale which they used...

Insertion type magmeters were specified in a plant I was involved with back in the late '80's. They were specified as a less expensive alternative to tube type magmeters. One service was concentrated sulphuric acid where they were eventually replaced with tube type. The insertion type did not...

Sorry for replying to this thread a bit late. ApC2Kp has provided good information on sulphur burners. In addition to pressure atomization type "sulphur spraying apparatus" the other most popular type of burner is a rotary cup spray atomizer. Molten sulphur is introduced to the inside of a...

The inlet to the quench tower is a region that is exposed to varying conditions from hot to cold and wet to dry. Most quench towers have a 90 deg elbow at the inlet and the gas flow through this elbow tends to follow the outside of the elbow. At the inside of the elbow, back currents and...