[Soda ash knowledge] Daily question (124) 2010.2.4
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Please hide the reply. If you do not hide it, you will not be graded in principle. Edited posts will not be graded. Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 The title of this issue is taken from the electronic version of the book "Technical Workers Job Training Question Bank-Soda Ash Production Operator".: http://bbs.hcbbs.com/thread-13140-1-2.html 1. What is the function of the calcium removal tower in the lime-ammonium carbonate method?
1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas； 2. Utilize the ammonia and carbon dioxide in the carbonation tail gas to be absorbed by the primary brine to produce (NH4) 2CO3, which then reacts with CaSO4 and CaCl2 in the primary brine to generate CaCO3 precipitation to remove the calcium.
There are 2 functions: 1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas ； 2. Utilize the ammonia and carbon dioxide in the carbonation tail gas to be absorbed by the primary brine to produce (NH4)2CO3, and then react with CaSO4 and CaCl2 in the primary brine to generate CaCO3 precipitation to remove the calcium.
1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas； 2. Utilize the ammonia and carbon dioxide in the carbonation tail gas to be absorbed by the primary brine to make ammonium carbonate, and then react with the calcium sulfate and calcium chloride in the primary brine to produce calcium carbonate precipitation to remove the calcium.
It has two functions: 1. The first brine after magnesium removal recovers ammonia and carbon dioxide in the carbonated exhaust gas ； 2. Utilize the ammonia and carbon dioxide in the carbonated exhaust gas to be absorbed by the primary brine to produce (NH4) 2CO3, which reacts with CaSO4 and CaCl2 in the brine again to generate CaCO4 precipitation and remove the calcium.
1. It has two functions: 1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas ； 2. Utilize the ammonia and carbon dioxide of the carbonated tail gas to be absorbed by the primary brine to produce (NH4)CO3, which then reacts with CaSO4 and CaCl2 in the primary brine to generate CaCO3 precipitation to remove the calcium.
1. It has two functions: 1) The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas. 2) Utilize the ammonia and carbon dioxide in the carbonated exhaust gas to be absorbed by the primary brine to produce (NH4)2CO3, which then reacts with CASO4 and CACL2 in the primary brine to generate CACO3 and precipitate to remove the calcium.
It has two functions. ① The primary brine after magnesium removal recovers oxygen and carbon dioxide in the carbonation exhaust gas； ②Utilize the ammonia and carbon dioxide in the carbonation exhaust gas to be absorbed by the primary brine and then release (NH), C03. Then change the CaSO in the salt water ； And the action of CaCl¨ generates CaCO. Precipitate and remove the calcium.
What is the role of the calcium removal tower in the lime-ammonium carbonate method? answer: There are two functions: ① The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation tail gas; ② The ammonia and carbon dioxide in the carbonation tail gas are absorbed by the primary brine to make (NH)2CO3, which then reacts with CaSO4 and CaCl2 in the primary brine to generate CaCO3 precipitation to remove calcium.
There are 2 functions: 1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonated tail gas. 2. The ammonia and carbon dioxide in the carbonated tail gas are absorbed by the primary brine to make (NH4)2CO3, which then reacts with CaSO4 and CaCl2 in the primary brine to generate CaCO3 precipitation to remove the calcium.
1. The primary brine after magnesium removal recovers ammonia and carbon dioxide in the carbonation exhaust gas； 2. Utilize the ammonia and carbon dioxide in the carbonation tail gas to be absorbed by the primary brine to produce (NH4)CO3, which then reacts with CaSO4 and CaCl2 in the primary brine to generate calcium carbonate precipitation to remove the calcium.