frasch process problems

In Louisiana (USA) and Gulf of Mexico large sulphur deposits occur at a depth of about 300-400 metres below the earth's surface. Layers of soft sand, clay and rocks over these sulphur beds make it practically impossible to extract sulphur from the deposits. Hermen Frasch in 1894 devised ..

Metals and Non-metals..

Sulphur has a low melting point of about 112 o C - 115 o..

Mining of Sulphur - Frasch Process A Frasch pump consisting of a set of three concentric pipes is sunk deep into the sulphur bed Super heated water at 170 0 C under pressure is pumped in through the outermost pipe Sulphur in the sulphur bed melts due to i..

The first step in the manufacture of sodium carbonate is to generate carbon dioxide. This can be got by heating limestone. The Plant Used in the Solvay Process..

A magnet is moved over the mixture containing the magnetic substance e.g., iron filings. These get attracted to the magnet. The process is repeated until the magnetic material is completely separated from the mixture. Fig: 1.4 - Separation of a magnetic substance by a magn..

The clay is first washed with water in wash mill to remove the foreign materials. Powdered lime is added to clay and the mixture is finely ground and homogenised. The clay-lime slurry (40% water present) or the dry pulverized mixture (in the case of dry process) is introduced into..

The aqueous solution of the compound (to be extracted) is taken in a separating funnel. A small quantity of a suitable organic solvent is added to this. The separating funnel is stoppered and the contents are shaken for some time. The funnel is then allowed to stand undisturbed on a tripod stand f..

The mixture is taken in a china dish covered with a wire guaze. An inverted glass funnel is placed on this to collect the vapors. Sometimes a perforated asbestos sheet is placed between the china dish and the funnel. The stem of the funnel is plugged with a little cotton and the sides are kept coo..

Crude petroleum is pumped into the furnace where it is heated to a temperature of about 400 o C. Petroleum is converted to vapours in the furnace. The vapours of petroleum are fed into the fractionating column from the bottom. As the vapours enter the column, they rise up and gradually get ..