[Soda Ash Knowledge] Daily Question (30) 11.2.2009
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This post was last edited by chen3jun on 2009-11-2 at 09:47. Please hide replies; replies that are not hidden will generally not be graded. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Edited posts are not rated. (The topic for this issue is taken from page 67 of “Question Bank for Technical Workers’ On-the-Job Training – Operators in Soda Ash Production”. The electronic version of this book can be downloaded from the Soda Ash Information Sharing Section: http://bbs.hcbbs.com/thread-13140-1-2.html) Fill-in-the-blank questions: 1. The load on a salting-out crystallizer is ( ) that on a cooling crystallization reactor; therefore, its total volume is also ( ). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the ( ) in the mother liquor completely disappears. 3. The grading function of the crystallizer is achieved by changing ( ). 4. The inner wall of the mold should be smooth and even, so as to minimize ( ) and ( ).
1. Large. Very large 2. Supersaturation 3. Apparent velocity 4. Scabbing, accumulation of impurities
1. The load on a salting-out crystallizer is greater than that on a cooling crystallization crystallizer; therefore, its total volume is also (larger). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the (supersaturation) of the mother liquor is completely eliminated. 3. The grading effect of the crystallizer is achieved by changing the (apparent velocity). 4. The inner wall of the mold should be smooth and flat to minimize (scaling) and (accumulation of impurities).
1. Large, very large 2. Supersaturation 3. Apparent velocity 4. Scabbing, accumulation of impurities
1. The load on a salt precipitation crystallizer is (greater) than that on a cooling crystallization crystallizer; therefore, its total volume is also (greater). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the (supersaturation) of the mother liquor is completely eliminated. 3. The grading function of the crystallizer is achieved by changing the (apparent velocity). 4. The inner wall of the mold should be smooth and flat to minimize (scaling) and (accumulation of impurities).
This post was last edited by chen3jun on 2009-11-2 at 16:47. 1. Large, large 2. Supersaturation 3. Appearance rate 4. Scabbing, accumulation of impurities
1. The load on a salt precipitation crystallizer is (greater) than that on a cooling crystallization crystallizer; therefore, its total volume is also (greater). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the (supersaturation) of the mother liquor is completely eliminated. 3. The grading function of the crystallizer is achieved by changing the (apparent velocity). 4. The inner wall of the mold should be smooth and flat to minimize (scaling) and (accumulation of impurities).
1. The load on a salting-out crystallizer is greater than that on a cooling crystallization crystallizer; therefore, its total volume is also (larger). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the (supersaturation) of the mother liquor is completely eliminated. 3. The grading effect of the crystallizer is achieved by changing the (apparent velocity). 4. The inner wall of the mold should be smooth and flat to minimize (scaling) and (accumulation of impurities).
1. The load on a salting-out crystallizer is greater than that on a cooling crystallization crystallizer; therefore, its total volume is also (larger). 2. The suspension section of the crystallizer must be maintained at a sufficient height to ensure that the (supersaturation) of the mother liquor is completely eliminated. 3. The grading effect of the crystallizer is achieved by changing the (apparent velocity). 4. The inner wall of the mold should be smooth and flat to minimize (scaling) and (accumulation of impurities). 1# chen3jun
1. Large, large. 2. Supersaturation. 3. Apparent velocity. 4. Scabbing, accumulation of impurities
1. Large, large 2. Supersaturation 3. Apparent velocity 4. Scabbing, accumulation of impurities