Method for purifying a dust-containing hot gas, more particularly coal gas produced from coal fed into a steel or iron bath reactor
AssigneeKlockner-Werke AG
InventorManfred Chitil
Life of this patent
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Abstract
Coal gas produced in an iron bath reactor during the gasification of coal is first cooled down in a first cooling step to a temperature of, preferably, 300.degree. C., and is subsequently purified at this temperature in a first electrofilter, then cooled down in a second cooling step to a temperature of, preferably 50.degree. C. and, finally, purified at this temperature in a second electrofilter.
Claims6
In a method of purifying a hot dust-containing coal gas produced from coal fed into a steel or iron bath reactor and issuing therefrom at a termperature of about 1500.degree. C., the improvement comprising the steps of cooling down the gas to be purified to a first temperature of about 200.degree. to 500.degree. C., first purifying the gas at said first temperature in a first electrofilter, further cooling down the purified gas to a second temperature of about 20.degree. to 100.degree. C., and thereafter again purifying the gas at said second temperature in a second electrofilter for dedusting the gas to a residual dust content which is negligible for a gas piping system.
Dependencies are inferred from the claim text.