Fine Chemical Plant Automates All Operations and Reduces Production Losses with Yokogawa's Exapilot

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 Executive Summary

Samsung Fine Chemicals, Ulsan, South Korea
Samsung Fine Chemicals, Ulsan, South Korea

SAMSUNG Fine Chemicals (SFC) produces many kinds of fine chemicals that have been well received both in Korea and the global market. SFC's products include mecellose (methylcellulose), epichlorohydrin (ECH), dimethylformamide (DMF), methylamines, tetramethylammonium chloride (TMAC), barium titanate powder (BTP), and AnyCoat. SFC also produces a range of general chemical products such as ammonia, urea, melamine, methylene chloride, methyl chloride, formic acid, and caustic soda. One of SFC's primary next-generation strategic businesses is the production of electronic chemical materials (ECM) such as BTP.

SFC has four BTP plants in Ulsan that, altogether, produces 4,000 tons per year of this material. One of these plants, plant C, was built in 2010 and uses Yokogawa's CENTUM CS 3000 distributed control system to control all of its operations. In 2012, SFC introduced Yokogawa's Exapilot package solution to automate processes throughout this plant. As a result, SFC has been able to reduce operator workload, improve product quality, and reduce production losses.

Overview of processes at plant C

Overview of processes at plant C

The Challenges and the Solutions

(1) Improved productivity
The BTP production process employs three batch reactors that process materials in sequence. The overall process is a complex mix of batch and continuous operations that requires numerous manual interventions and the operation of many different valves. This was demanding work for the operators, each of whom had to specialize in carrying out different parts of the operation.

Based on a careful review of all operational procedures and the operator roles in this production process, SFC's production technology engineering team created new standard operation procedures (SOP) based on its existing SOPs. They then configured these SOPs in Exapilot to automate them. As a result, reaction times have been drastically reduced and nearly all unstable conditions have been eliminated. Less hot water is now required to heat the reactors, batch operation waiting time has been eliminated, and operator workload has been reduced.

Reactor 2: reaction time without Exapilot / Reactor 2:  reaction time with Exapilot

Reactor temperature control plays a very important role in determining the quality of the final product. With Exapilot, the reactor temperature always stays within the control limits. In addition to improving product quality and yield, this uses less hot water.

Reactor 2: temperature without Exapilot / Reactor 2: temperature with Exapilot

(2) Efficient scheduling
Each reactor processes several batches a day and requires the performance within a specified time period of procedures such as raw material feeding, agitation, heating, cool down, and discharge. To ensure the smooth operation of all these processes in the three reactors, it is very important to optimize their scheduling. With Exapilot, SFC was able to automate all of the SOPs for these complex processes. As a result, it has minimized idling and waiting time and eliminated production bottlenecks. The overall operation is much smoother now and operators are more productive, with a drastically reduced workload.

Reactor 2 operation time shorten

Reactor 2 operation time shorten

Customer Satisfaction

KyungChul Park, senior manager of the product technical team, said, "First of all, we carefully evaluated many software packages for the procedural automation and finally selected Yokogawa's Exapilot. We are very happy with Exapilot and have used it to fully automate all of the complicated procedures at this plant. Exapilot brings us many benefits such as increased productivity, shortened batch times, fewer operator errors, zero loss, a stable process, easy documentation of all procedures, improved operator training, reduced use of utilities, and consistently high product quality."

"We are striving to make further improvements by introducing a second Exapilot package and using this together with an advanced process control (APC) package and other software. In so doing, we hope to make our products more globally competitive. We will keep working with Yokogawa."

Central control room
Central control room

行业

相关产品&解决方案

先进控制及预估平台(先进过程控制)

先进控制及预估统一平台将多变量控制、质量预估、复杂的自定义运算以及操作员用户界面设计等功能整合到一个应用中,这就大幅减少了部署时间,使维护系统鲁棒性变得简单。

程序自动化(Exapilot)

程序自动化工具(Exapilot)在满足可靠性、灵活性和生命周期成本方面要求的同时,提供灵活的方法来获取、优化和维持过程工厂中的流程知识。

集散控制系统(DCS)

横河电机的集散控制系统(DCS)使工业过程实现了自动化控制,并增强了业务性能。超过10000家工厂采用横河DCS来实现他们的生产目标。

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