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Usiminas Boilers

Boiler Control System

A Altus forneceu a tecnologia de automação para o desenvolvimento do novo Sistema de Controle das Caldeiras de uma das unidades fabris da Usiminas, uma das maiores empresas do setor siderúrgico do Brasil, gerando economia e mais produtividade para a empresa.

Usiminas Boiler Control System

O Sistema de Controle das Caldeiras desenvolvido com base na tecnologia dos controladores programáveis da Altus realiza o balanceamento, proteção e rejeição de cargas das caldeiras de 45 e 130 t/hora da Usiminas. Esses equipamentos são responsáveis por controlar o envio de vapor de alta pressão e alta temperatura para turbo-sopradores e termoelétrica, e vapores para as áreas de processo, como o pátio de despacho de placas Plate-Mill. Essas ações apoiam a desaceleração automática de desbobinadeiras da laminação de tiras à quente e do sistema de desenfornamento das baterias no 1 e 2 da Coqueria 1.

O projeto também contemplou a instrumentação da área, onde foram utilizados rádios de comunicação motorola para a interligação em ethernet dos pontos de medição até o supervisório indusoft web studio.

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Energy Efficiency

The energy generation optimization achieved through this project saves Usiminas approximately US$ 450,000 per month

Dados precisos

The embedded technology in this solution delivers highly accurate data throughout the process

Informações centralizadas

The system also enhances the centralization of all data related to resource use

Controle online

With a range of online diagnostics and alarms, the system enables remote monitoring, ensuring continuous oversight

Key benefits of the new system

The system is controlled by four Altus programmable controllers, connected via an Ethernet network with CPU and I/O module redundancy.

Supervision is carried out from a dedicated Supervisory Station, with all PLCs linked to it through Altus AL-3405 communication modules over Ethernet/TCP-IP (IEEE-802.3), as well as the optical transceivers and repeaters used in the project.

The system also features a real-time multitasking processing module, which handles communication with two single-loop controllers for precise boiler temperature control.

Características Específicas da Aplicação

Application-specific features

The system includes 784 digital and analog input/output points, all operating in redundancy mode, along with the process control CPUs. These operate within an Ethernet TCP/IP network using fiber optics.

Additionally, the system features remote supervision capabilities for enhanced monitoring and control.