How to reduce sulfuric acid consumption problem
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This post was last edited by sunjl1981 on 2013-1-6 21:37. Please give me some advice.: How can we effectively reduce the consumption of sulfuric acid during the chlorine drying process? I wonder what level the acid consumption of other factories is at. # hcbbs
The main purpose of reducing acid consumption is to control the temperature of chlorine gas entering the drying tower, as close as possible to the lower line of the indicator, and maintain it at 12 to 15 degrees. Another important way to reduce acid consumption is to maintain good performance of the water mist collector and prevent large amounts of salt mist from entering the drying tower. Secondly, keep the drying tower working at a lower temperature and ensure that the front acid mist collector has good mist ejection effect. In this way, the water content in the chlorine is ensured and the waste caused by blindly increasing the flow of sulfuric acid is prevented.
The main thing to reduce acid consumption is to control the temperature of chlorine gas entering the drying tower. That is to say, the temperature of the titanium cooling tower must be controlled well and be as close to the index limit as possible, which is about 12 degrees. However, to prevent crystallization, the temperature must be slightly higher periodically to melt the crystallized material.
In addition to the in-depth analysis of the above friends, I feel that the good operation of the chlorine water scrubber is also a factor in ensuring cooling and drying.
In addition to the above discussion, it is also necessary to strictly meter the amount of sulfuric acid added and control the emission concentration of dilute acid.
Agree, but the quality of sulfuric acid raw materials must be controlled.
My sister and Dianhu said it well. Let me add something. That is to strictly control the acid proportion of 75%. Lower the circulating acid temperature of each tower by about 20 degrees.
1. The temperature of chlorine entering the drying tower is 12 degrees. 2. The circulating acid temperature of the drying tower is 18 degrees. 3. The acid entering the bubble tower is 98. The acid concentration exiting the tower is 75. 4. Regularly analyze the water content to adjust the acid content.
First, ensure the good operation of the washing tower, especially the heat exchange effect, then control the titanium cooling temperature at about 12 degrees, and ensure the capture effect of the collector. The working temperature of the drying tower is also between 11 and 13 degrees Celsius.
If the chlorine gas entering the tower fluctuates too much, it will easily reduce the drying effect and increase the acid consumption. The stability of the chlorine gas pressure is also related.
If you have controlled the temperature of the chlorine gas entering the drying tower (some only have process water cooling, you can consider using ice water), then the remaining thing is to control the temperature of the sulfuric acid cooler. Some factories have two sulfuric acid drying towers, but only one sulfuric acid cooler, you can consider adding it;