| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flue desulfurization equipment keeping the slurry concentration in an absorbing solution tank and also keeping the absorbing solution level in the absorbing solution tank within the given range when the operation of extracting intermittently an absorbing solution from the absorbing solution tank and also provide an operation method thereof. SOLUTION: An absorbing solution from an absorbing solution tank 1a containing a lime stone slurry storing the absorbing solution is brought into contact with boiler gas introduced into an absorption column 1 to remove sulfur oxide in gas, and the absorbing solution absorbing the sulfur oxide in exhaust gas is returned to the absorbing solution tank 1a. At that time, the specific gravity of the absorbing solution in the absorbing solution tank 1a is sensed by a specific gravity hydrometer 16, and the feed amount of reinforcing water from a reinforcing water feed line 10 into the absorbing solution is adjusted, and also the absorbing solution extraction amount out of an absorbing solution extraction line 9 of the absorbing solution tank 1a is adjusted based on the sensed value of a liquid level indicator 17 for the absorbing solution in the absorbing solution tank 1a.</p> |
