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The fan saves 37% of electricity! This is what Southern Cement uses!

The fan saves 37% of electricity! This is what Southern Cement uses!

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  • Time of issue:2020-09-23 09:45
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(Summary description)​Currently, "energy saving and consumption reduction" is the direction of the development of the cement industry. The state's emphasis on energy saving and emission reduction has put a lot of pressure on high energy consumption and high pollution cement companies, forcing cement companies to update cement production equipment and develop in the direction of energy conservation and environmental protection. Cement companies have begun to pay attention to energy conservation and emission reduction, and actively use new energy-saving production equipment to carry out technological transformation. In the cement production process, the installed capacity of fans accounts for 30%-35% of the total installed capacity of cement plants, and accounts for a high proportion of energy consumption. Therefore, it is extremely important to do a good job in energy saving and consumption reduction of fans.

The fan saves 37% of electricity! This is what Southern Cement uses!

(Summary description)​Currently, "energy saving and consumption reduction" is the direction of the development of the cement industry. The state's emphasis on energy saving and emission reduction has put a lot of pressure on high energy consumption and high pollution cement companies, forcing cement companies to update cement production equipment and develop in the direction of energy conservation and environmental protection. Cement companies have begun to pay attention to energy conservation and emission reduction, and actively use new energy-saving production equipment to carry out technological transformation. In the cement production process, the installed capacity of fans accounts for 30%-35% of the total installed capacity of cement plants, and accounts for a high proportion of energy consumption. Therefore, it is extremely important to do a good job in energy saving and consumption reduction of fans.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2020-09-23 09:45
  • Views:
Information

​Currently, "energy saving and consumption reduction" is the direction of the development of the cement industry. The state's emphasis on energy saving and emission reduction has put a lot of pressure on high energy consumption and high pollution cement companies, forcing cement companies to update cement production equipment and develop in the direction of energy conservation and environmental protection. Cement companies have begun to pay attention to energy conservation and emission reduction, and actively use new energy-saving production equipment to carry out technological transformation. In the cement production process, the installed capacity of fans accounts for 30%-35% of the total installed capacity of cement plants, and accounts for a high proportion of energy consumption. Therefore, it is extremely important to do a good job in energy saving and consumption reduction of fans.

Huzhou Huaikan South Cement Co., Ltd. is located in Huaikan Township, Changxing County, Zhejiang Province. The company is mainly engaged in the production and sales of Portland cement and cement clinker. It is the benchmark unit of Southern Cement in Shanghai. In order to reduce the power consumption of wind turbines, the impact of noise on the environment, and the frequency of wind turbine failures, the company carried out technical transformations on the fans of the homogenization library of the first-line 5000T/D production line in October 2019.
 
Before the technical transformation, the homogenization library system operated 3 Roots blowers, 2 37kW and 1 15kW; the fan nameplate and measured parameters are shown in the table below.
 
Table 1 Roots blower nameplate parameters

Table 2 Actual operating parameters of Roots blower

In combination with the actual production situation, Huaikan Southern Cement replaced the original 3 Roots blowers with 1 magnetic levitation centrifugal blower of Magnetic Valley Technology CG/B75. The magnetic levitation centrifugal blower is easy to install, and it can be installed only if the ground is flat. Auxiliary installation of large cranes and other equipment. This model has passed the practical operation test and has the characteristics of high efficiency, low noise and stable operation. The outlet flow of the fan can be adjusted by frequency conversion according to the process requirements, which greatly saves the power consumption. At the same time, it has low noise on site and has To achieve the purpose of energy saving, noise reduction and environmental protection operation.

Operation status:
 
(1) The operating conditions of the magnetic levitation blower and the original Roots blower after the technical transformation are compared as shown in the table below.

Under the same working conditions, the Homogeneous Kuyuan Roots blower consumes about 66 kW·h per hour.
 
Existing magnetic valley magnetic levitation fan operating status 1: power consumption is about 37.7 kW·h per hour, which saves 28.3 kW·h per hour compared to Roots blower, with a power saving rate of 42.9%, and the monthly power consumption of the fan saves 20376 kW·h per year. Save power about 244512 kW·h;
 
Magnetic levitation fan operating status 2: power consumption per hour is about 45.5 kW·h, which is 20.5 kW·h per hour less than Roots blower, and the power saving rate is 31%. The monthly power consumption of the fan saves 14760 kW·h and the annual power saving is about 177,120 kW·h;
 
The average power saving is about 37%.

(2) The rated flow rate is 60 m³/min, the outlet air pressure is about 60 kPa, the rated speed is 34000 r/min, the site noise is ≤80 dB, the outlet air volume adjustment range is 40% to 100%, the equipment has a small footprint and simple installation. Adjusting the speed of the motor through the frequency converter to adjust the outlet air volume has high precision, and at the same time realizes a video operation platform.

(3) Features of the operation interface of the magnetic valley magnetic levitation fan: ①The operation module, inlet temperature, speed, outlet pressure, bus voltage, motor temperature, power, radiator temperature, etc. are all digitally displayed, saving manual temperature measurement operations and saving purchase temperature measurement Electricity measurement equipment cost; ②24-hour historical data can be queried throughout the day; ③The alarm module is intelligent, the fan will stop intelligently after an alarm, and display the fault code, the operator can directly check the technical parameter basis and fault query table provided by the fan manufacturer , Contact the technical staff to deal with; ④The operator’s password login, touch the screen to increase and decrease the frequency to control the speed of the permanent magnet motor, and then control the flow of the blower; ⑤The equipment simulates and monitors the motion trajectory of the magnetic bearing to achieve high-precision rotation; ⑥The motor The control system, magnetic levitation control system and complete machine control system are integrated. In addition, the magnetic levitation fan is equipped with "Ciguyun" remote control system, which can not only be controlled by the central control room, but also can be remotely repaired and debugged in case of failure.

Project summary:

Judging from the on-site operation of the fan, the application effect of the magnetic levitation blower is far superior to the original Roots blower, and its advantages are mainly reflected in:

1. Low energy consumption: save energy about 37% than the original Roots blower of the system. Meet the requirements of the contract.

2. Low noise: The fan noise is reduced from 112dB to below 80dB, and the working environment on site is greatly improved.

3. Easy maintenance: from the original regular lubricating oil and filter cotton replacement to only filter cotton replacement.

4. Easy to operate: switch the machine to adjust the air volume through the display screen.

Magnetic Valley Technology is the first manufacturer of magnetic levitation centrifugal blowers in China. All core technologies are independent innovation research and development. Successively independently developed China's first magnetic levitation centrifugal blower, China's first magnetic levitation turboexpander, and China's first magnetic levitation centrifugal air compressor.

The magnetic levitation centrifugal blower of Cigu has been efficiently applied in many cement companies such as Huaikan South Cement in Huzhou, Changxing South Cement, Dajiang in Anhui, Ya'an Cement in Sichuan, Anji South Cement, Guangde Dushan South Cement, Zaozhuang Zhonglian Cement, etc. So far, thousands of magnetic levitation fans have been applied in energy-saving and high-efficiency applications across the country and some overseas countries and regions. Because it saves about 30% more energy than traditional fans, no lubricating oil, no mechanical maintenance, low vibration and low noise, easy installation and easy maintenance, "Magnetic Valley Cloud" remote management, self-generation dual protection and other outstanding features, it continues to save a lot of customers in various industries Electricity is well received by users and industry experts.

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