[Soda ash knowledge] Daily question (5) 2009.09.27
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In order to allow everyone to better participate, starting from this issue, only one type of question will be asked at a time (fill in the blanks, selection, judgment, question and answer, calculation, etc.). But the maximum reward wealth is reduced to 15 wealth. Please hide the reply. If you do not hide it, you will not be graded in principle. Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Edited posts are not graded. (The title of this issue is taken from the second page of "Technical Workers Job Training Question Bank-Soda Ash Production Operator". The electronic version of the book is available for download in the soda ash information sharing area. http://bbs.hcbbs.com/thread-13140-1-2.html ) 1. The main raw materials of ammonia-alkali method are ( ), ( ), ( ), ( ). 2. The main disadvantages of the ammonia-alkali method are ( ) and ( ). 3. The utilization rate of salt in the ammonia-alkali method is generally less than ( ). 4. The recovery of ammonia in the ammonia-alkali method is ( ). 5. The main production process of ammonia-alkali method has six steps: ( ), ( ), ( ), ( ), ( ), ( ).
1. Salt, limestone, coking coal, ammonia 2. Sodium chloride utilization rate is low, and waste residue treatment is difficult 3. 30% 4. Heating and distillation of mother liquor and milk of lime 5. Preparation of refined brine, preparation of carbon dioxide and milk of lime, preparation of ammonia brine, carbonation of ammonia brine, calcination of heavy alkali, recovery of ammonia
1. Salt, limestone, coking coal, ammonia 2. Sodium chloride utilization rate is low, and waste residue treatment is difficult 3. 30% 4. Heating and distillation of mother liquor and milk of lime 5. Preparation of refined brine, preparation of carbon dioxide and milk of lime, preparation of ammonia brine, carbonation of ammonia brine, calcination of heavy alkali, recovery of ammonia
Reference answers 1. Salt, ammonia, limestone, coking coal 2. Sodium chloride utilization is low, and waste residue treatment is difficult 3. 30% 4. Heating and distillation of mother liquor and milk of lime 5. Preparation of refined brine, preparation of carbon dioxide and milk of lime, preparation of ammonia brine, carbonation of ammonia brine, calcination of heavy alkali, recovery of ammonia
1. Raw salt, limestone, coke, water 2. Low salt utilization rate, large waste residue discharge 3. 50% 4. Add limestone, evaporate 5. Refining of coarse salt,
1. The main raw materials of ammonia-alkali method are (salt), (ammonia), (limestone), (coking coal). 2. The main disadvantages of the ammonia-alkali method are (low utilization rate of sodium chloride) and (difficulty in waste residue treatment). 3. The utilization rate of salt in the ammonia-alkali method is generally less than (30%). 4. Ammonia is recovered in the ammonia-alkali method (heated distillation of mother liquor and lime milk). 5. The main production process of ammonia-alkali method includes six steps: (preparation of refined brine), (preparation of carbon dioxide and milk of lime), (preparation of ammonia brine), (carbonation of ammonia brine), (calcination of heavy alkali), and (recovery of ammonia).
1. The main raw materials of ammonia-alkali method are (salt), (ammonia), (limestone), (coking coal). 2. The main disadvantages of the ammonia-alkali method are (low utilization rate of sodium chloride) and (difficulty in waste residue treatment). 3. The utilization rate of salt in the ammonia-alkali method is generally less than (30%). 4. Ammonia is recovered in the ammonia-alkali method (heated distillation of mother liquor and limestone emulsion). 5. The main production process of ammonia-alkali method includes six steps: (preparation of refined brine), (preparation of carbon dioxide gas and milk of lime), (preparation of ammonia brine), (carbonation of ammonia brine), (calcination of heavy alkali), and (recovery of ammonia).
1. The main raw materials are: Salt, limestone, ammonia 2. Main disadvantages: One is that the utilization rate of raw materials is low, and the other is that production waste is not easy to recycle. 3. Generally less than 70% 4. Ammonia is recovered by adding lime milk to evaporate ammonia 5. The production process has: One is the calcining of limestone and the digestion of lime ； The second is brine refining ； The third is salt water ammoniation ； Fourth, ammonia salt carbonation ； Fifth, heavy alkali filtration ； Sixth, there is a prompt with less than sixteen characters in the major calcination. Can you deal with it, moderator? ?
1. Salt, ammonia, limestone, coking coal 2. Sodium chloride utilization rate is low, and waste residue treatment is difficult 3.30% 4. Heating and distillation of mother liquor and milk of lime 5. Preparation of refined brine, preparation of carbon dioxide gas and milk of lime, preparation of ammonia brine, carbonation of ammonia brine, calcination of heavy alkali, and recovery of ammonia