Research On Capacity Improvement Of The Herbicide Production Line Of Company J Based On Theory Of Constraints

With the continuous growth of the world population and the increase of food demand,the market demand for herbicide S is increasing year by year under the trend of the restriction of the use of bulk herbicide glyphosate.To cope with the challenges of current chemical production and operation reform and meet the new opportunities of market demand,how to ensure that herbicide S production line can increase capacity,reducing costs and improve competitiveness in a short period of time with less investment has become an issue that company J should solve as soon as possible.In this thesis,the improvement of production capacity of company J herbicide S production line was studied by using theory of constraints.Firstly,the basic information of Company J and the production line of herbicide S were introduced,and the production status and capacity of herbicide S were deeply analyzed.Secondly,by using the method of combining the production beat of each process with OEE,the bottleneck processes that restrict the productivity of the whole herbicide S production line are identified and the influencing factors of the bottleneck processes are clarified.Thirdly,in view of the factors impacting the bottleneck,the potential of the bottleneck process of herbicide S production line is fully explored by using the constraint theory and focusing on the five-step method,and the capacity optimization scheme is proposed by using the non-bottleneck process to obey the bottleneck process for continuous improvement.The production plan of herbicide S was created by using DBR method with a certain amount of buffer time was set before the bottleneck,and the non-bottleneck step coordinated production line is carried out according to the beat of bottleneck.Finally,to evaluate of the results of the capacity improvement for herbicide S production line.Through the improvement of the capacity of herbicide S production line,it is fully demonstrated that the constraint theory is very effective in increasing production capacity.The OEE of bottleneck step has been great improved;The cycle time of herbicide S decreased from 4.66 hours to 2.73 hours.The production capacity of herbicide S has increased from 140 tons/month to 203.4 tons/month,increasing by45.3%;The delivery time is about 11 days ahead of the implementation requirement.The successful application of constraint theory in herbicide S production line has accumulated valuable practical experience for the improvement of Company J and other similar chemical enterprises.