Sulphuric Acid

Sulphuric Acid

Filter › Drying Tower

SULPHURIC ACID DRYING TOWER

Air or SO2 is dried with H2SO4 before being fed to the sulphur burner or converter. The Drying Tower can be under pressure or under suction, with the main gas blower being, respectively, in front of or after the tower.  The physical limit...
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Filter › IAT & AT

SULPHURIC ACID INTERMEDIATE ABSORPTION TOWER

Case A Conventional H2SO4 Process
In a sulphur burning or metallurgical double absorption H2SO4 plant where no Oleum is produced upstream, SO3 gas exits the third catalyst pass, is cooled down and enters the first ( = intermediate ) absorption tower, where H2SO4...
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Filter › FAT

SULPHURIC ACID FINAL ABSORPTION TOWER

In a sulphur burning or metallurgical or spent H2SO4 regeneration plant where no Oleum is produced upstream, SO3 gas exits the fourth catalyst pass, is cooled down and enters the second (= final) absorption tower, where H2SO4 is distributed over ceramic packing to...
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Filter › Tail Gas Scrubber

SULPHURIC ACID PLANT SO2 TAIL GAS / NH3 / SO2 TAIL GAS SCRUBBER TOWER
Tail Gas Scrubber
The SO2 conversion rate of single absorption plants is lower than double absorption, and many single absorption plants installed tail gas scrubbers to reduce this SO2 content rather than convert the...
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Filter › Mercury Removal Tower

SULPHURIC ACID Mercury Removal Tower

Mercury Removal Towers can be installed as part of the Gas Cleaning section upstream of a Sulphuric Acid contact plant, where solids and other impurities are removed.
The exit of the Mercury Removal Tower should be fitted with a suitable droplet separator to...
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Filter › Wet Catalysis & WSA

SULPHURIC ACID PLANT / Wet Catalysis Process / WSA Process Exit

The use of High Efficency, Brownian Diffusion type Mist Eliminators in different Sulphuric Acid condensation processes has been done for more than 30 years, but now there are more installations to treat H2S gas emissions and...
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Filter › H2SO4 Concentrator

SULPHURIC ACID ACID CONCENTRATOR

In a H2SO4 plant, weak acid can be produced which is then concentrated to commercial grade strong acid using acid concentrator. Concentration is often done by direct contact with hot gas from a combustion furnace. Weak acid droplets are mechanically entrained, even up to...
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Filter › Cross Flow Stripper

SULPHURIC ACID CROSS FLOW STRIPPER

In a H2SO4 plant, acid can recirculate between the Drying and Absorbing Towers. A cross flow stripper is used to remove dissolved SO2. Acid droplets are mechanically entrained, typically as a load of 500 mg/m3. The particle size spectrum will be >3 micron.learn more »

Gas Cleaning › Oleum & Tank Vents

SO3 / OLEUM TANK VENTS

Oleum and liquid SO3 is stored in tanks and when the tanks are being filled or emptied, there is an increase in vent vapour. Similarly, when loading into or from trucks & wagons there will be a SO3 fugitive vapour. This SO3...
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Gas Cleaning › Spent Acid Regeneration WSA Caldo

SULPHURIC ACID / SPENT ACID REGENERATION / WSA CATALYST PROTECTION

In a Refinery that produces H2S the gas can be burned in a furnace to generate SO2 gas which in turn can be converted into weak Sulphuric Acid (spent acid regeneration).
The gas needs to be cleaned, to...
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