Zhejiang linen yarn manufacturer decides to make energy efficiency improvements to the system

Date:2020-10-27 09:43:37

A small piece of clothing can make us feel different vitality every day. All natural materials used to weave ready to wear clothing come from the earth, sunlight, and water

From the weaving machines of the Qin and Han dynasties, to the Jenny spinning machines that triggered the industrial revolution, and now to fully automated textile machinery, spinning technology is constantly evolving and advancing. However, the extensive improvement of production efficiency has also brought environmental pain. The earth, sunshine, and water that nurture vitality, after industrial furnaces, produce black smoke, coal slag, and sewage.

The operation of the boiler is the core step in the processing of clothing raw materials. The boiling and bleaching process provides a large amount of heat energy, but the remaining large amount of condensed water after the boiling and bleaching process, carrying heat, is discharged in vain, resulting in a dual waste of heat and water energy.

Mr. Shen, the General Manager of Zhejiang Linen Yarn Manufacturer, has decided to conduct a thorough energy-saving of the thermal energy system and has given priority to choosing Siemens' complete automation system.

Through communication and on-site inspection of the factory, we have gained a clear understanding of the factory's energy-saving potential. In the subsequent customized service plan, we have referred to actual working conditions and optimized the improvement measures in the standard service package, successfully completing the two major battles of boiler control operation system transformation and condensate water recovery.

The 6-ton/hour boiler control operation system and energy-saving renovation project for condensate water recovery have achieved automatic optimization control of the boiler through variable frequency control of the boiler drum and induced draft fan, automatic control of the boiler water level and grate speed, and recovery of high-temperature condensate water from the boiling and bleaching section to increase the boiler inlet water temperature.

We have achieved a coal saving rate of 15%, a power saving rate of 26%, and an overall energy saving effect close to 20%, exceeding the guaranteed contract energy saving rate of 12% and 15%.

Previously, the boiler had been manually operated, with burning and stopping, resulting in low boiler control level and low operational efficiency. Siemens has achieved optimized automatic control of boiler operation by improving the control and operation system of the boiler. The boiler drum, induced draft air volume, boiler water level, grate speed, etc. are automatically adjusted with load changes through this system.

Siemens motors, Siemens reducers, and ABB frequency converters have also reduced the power consumption of boiler drums, induced draft fans, and feedwater pumps through frequency conversion technology.

Mr. Shen said, "Next, we will soon implement lean production projects, as well as how to use automation technology to control production, save manpower, and reduce costs in traditional industries. We will cooperate with Siemens in these areas