Auto-control Solution for Smelter's Sulfuric Acid Plant

System Introduction

The smelter's sulfuric acid plant is an essential part of nonferrous metal smelting process. However, sulfuric acid is highly corrosive, threatening the safety of both the workers’ health and the equipment, and the quality and efficiency in sulfuric acid production still have room for improvement. With this in mind, the automatic production of sulfuric acid plant has become a priority for equipment upgrading and the safety in production.

System Requirements

Operate safely and reliably, easy to maneuver.
Accurately measure the data of each point in the plant, like temperature, flux, etc.
Control all the equipment of the production line such as motors, valves, etc.
Directly display various data of the production line.

Block Diagram
System Principle
As there are lots of data acquisition points in the plant, the system adopts star topology. One EVOC Core2 Duo platform computer serves as the host computer and two Pentium4 computers as data acquisition computers. They are connected through network hub. Each data acquisition computer is equipped with built-in PCL-813 analog data acquisition card and PCL-7241 digital I/O card for onsite data acquisition and control.
The thermocouple and RTD signals coming from the production line are transmitted into PCL-813 through PCLD-789D and PCLD-16RTD. The signals such as flux and liquid level are transmitted into PCL-813 through PCLD-880. The field data is analyzed by the system and output to control field equipment such as motors, valves, etc.

System Configuration
Host computer:
Chassis: IPC-8422/6114LP7/PS-7270A
Motherboard: FSC-1812V2NA
Configuration: Core 2 Duo CPU/2GB/250G SATA
Acquisition Computer:
Chassis: IPC-8421/6113LP4/PS-7270A
Motherboard: FSC-1717VN
Configuration: Pentium4 3.0/1G/160G SATA
Analog Data Acquisition Card: PCL-813B
Digital Control Card: PCL-724
Signal Regulating Card: PCLD-789D, PCLD-16RTD
Terminal Board: PCLD-880, PCLD-885

System Evaluation
The system introduces industrial PC to control production, not only improving productivity and product quality but also reducing pollutants that are hazardous to the health of workers and the environment.

This article from EVOC website.

EVOC Profile

Driving Human Progress with Intelligent Products

Nowadays, technology is increasingly changing people’s lives and improving their living standards. EVOC, as a high-tech company, is providing high-quality central control device and technical support for various fields, such as transportation, industrial automation, energy, environmental protection, sports, medical care, electric power, banking, electronics, networking, telecommunications and instrumentation.

Company Roots

Founded in 1993, EVOC has already had 18 years of experience in the R&D, production and sales of embedded and industrial computing products. In 2003, EVOC Intelligent, one of EVOC’s subsidiaries was successfully listed on the Hong Kong Stock Exchange (stock code: 02308). Now the company has established close and long-standing relationships with a large number of global clients.

Company Strengths

EVOC products, as an embodiment of innovation in the industry, have provided over 10,000 users worldwide with high-quality custom products. EVOC boasts a largest R&D center for embedded technology, a largest R&D team and the biggest manufacturing base in the world. Cooperating with Intel, we have developed hundreds of embedded intelligent control products. Now EVOC is widely reputed for the high performance-cost ratio of its products, excellent after-sales services and technical support. EVOC products have become the first choice for a large number of users worldwide. According to CCID, EVOC Group is now ranked among top five in the world and emerging as one of the most competitive players in the embedded industry.

Global Scope

In 2008, EVOC established its international business department and started to explore overseas market. Today, EVOC is ready to share its embedded and industrial computing solutions as well as its sophisticated and reliable products with more partners in the international arena, and grow with them on the basis of mutual-benefits and win-win.

This article from the EVOC website.