What is a stirring and mixing ?
1 : non- uniformity reduces the system ( phase , temperature , concentration, etc. ) to achieve the desired process results .
2: mass transfer , heat transfer , reaction and product characteristics are key objectives .
 

Stir and mix the poor would lead to what consequences ?
Successfully produced products meet the technical objectives is crucial . If in the process of amplification process products failed to meet the required yield , quality and performance , then the cost of production will increase significantly , more importantly, when the investment of money and time to improve the mixing and blending effects , may sit watching the market to lose .
Production process of money spent to solve the problem of mixing may be far more than adequate evaluation process development and problem solving mixed spent . To improve the mixing of funds spent enormous , the United States , for example, in the chemical industry , due to poor mixing and mixing losses due to about 5%. In 1989, the chemical industry on the loss of only 10-100 billion. In 1993, a multinational chemical company due to poor mixing effect has led to $ 100 million in losses.
 
Mix just enough to what extent ? When will be reduced because of excessive mixing yield and product quality ?
It depends on the quality of products , such as sensitivity and selectivity of the stirring intensity and agitation time . This requires the prior process development and amplified by experiment or simulation of such a detailed understanding .
 
Stir and mix the emerging problem of how to solve ?
First ask , " Why is there this problem ? " And " the question is how arise ? ." This requires and operational staff, and is responsible for process development chemists to communicate. These problems then become " how can we zoom in ? " And " how laboratory and factory conditions will be so different ? "
The importance of these issues may never be underestimated. The majority of the engineers who are just opening to ask questions and reaction conditions similar geometry problems . Good experimental design requires a detailed understanding of mixing mechanism , so as to get useful results. Do not understand the rationale for the mixer engineer might just adventure.
 
Mixing operation range
In many industries , stirring and mixing plays a very important role :
Fine chemicals, agricultural chemicals , pharmaceuticals , petrochemical , biotechnology, polymerization process , paint and car polish , cosmetic and consumer goods, food , drinking water and fertilizer processing , paper industry, mining engineering