NEWS CENTER

China's cement industry will usher in ten thousand tons of production line kiln head "bag dust collection" era


Release time:

Apr 16,2012

With the implementation of the kiln head bag dust collector and air cooler project of Xuzhou Zhonglian Cement Phase II 10000t/d clinker cement production line successfully won by China Building Materials (Beijing) Environmental Protection Engineering Development Co., Ltd., China's cement industry will usher in the era of "bag dust collection" at the kiln head of 10,000-ton clinker production line. It is reported that this is currently the largest single kiln head bag dust collector in China, and it is also the first time that the kiln head of the domestic 10,000-ton clinker production line adopts the method of "air cooler and cloth bag dust collector" for dust collection. This will change the previous 10,000-ton clinker production line kiln head has been using electric dust collector dust collection method, marking China's environmental protection in the field of cement.

With the implementation of the kiln head bag dust collector and air cooler project of Xuzhou Zhonglian Cement Phase II 10000t/d clinker cement production line successfully won by China Building Materials (Beijing) Environmental Protection Engineering Development Co., Ltd., China's cement industry will usher in the era of "bag dust collection" at the kiln head of 10,000-ton clinker production line.

It is reported that this is currently the largest single kiln head bag dust collector in China, and it is also the first time that the kiln head of the domestic 10,000-ton clinker production line adopts the method of "air cooler and cloth bag dust collector" for dust collection. This will change the previous 10,000-ton clinker production line kiln head has been using the electric dust collector dust collection method, marking my country's energy saving and emission reduction in the field of cement environmental protection has taken a new step.

This historic breakthrough and change not only enables the emission of dust from the kiln head of the 10,000-ton clinker production line to fully meet the stricter national new emission standards, and realizes the export dust emission concentration below 30mg/m3, but also effectively solves the problems of dust collection such as high dust concentration, large dust particles and strong scouring.

Industry insiders know that in recent years, China has formed an industry consensus that "kiln head adopts electric dust collector and kiln tail adopts bag dust collector" in the construction of new dry cement production line. This is mainly due to factors such as dust and temperature. Because of its own characteristics that cannot be changed, the electric dust collector determines its emission concentration of 50~100mg/m3, which is reluctantly allowed before the cement industry emission standards are not improved. However, with the improvement of the national environmental protection policy on the dust emission requirements of cement production lines, the new "cement industry air pollutant emission standard" clearly stipulates: "from January 1, 2010, the dust emission concentration at the kiln end of the existing cement production line is less than 50mg/m3, and the new cement kiln should ensure that the dust removal device can still operate normally under the fluctuation of production process, and abnormal emission is prohibited." Even some local governments have raised the dust emission standard to 20mg/m3. At present, it is difficult to meet this standard when the cement kiln uses the electric dust collector in the production process fluctuation.

China Building Materials (Beijing) Environmental Protection Engineering Development Co., Ltd. is a science and technology enterprise under China Building Materials Group, the largest central enterprise in China's building materials industry. The company is committed to the development and production of environmental protection dust removal equipment for building materials, and is a well-known engineering service provider and manager. Since its establishment in 2006, the company has adhered to the road of technological progress and technological innovation, successfully carried out strategic cooperation with GE Company in the United States, and carried out fruitful and extensive cooperation by virtue of their professional knowledge and respective advantages in the field of environmental protection, especially in the new dry process cement production dust collection system electric bag or electric bag combination has made significant progress and breakthrough, it has become a "dark horse" in the field of cement dust removal in my country to compete for the two markets at home and abroad. It has achieved impressive results and has received extensive attention from both inside and outside the industry. In the past three years, they have successfully built nearly 100 environmental protection dust removal projects in China, and provided technical services for more than 100 new dry process cement production lines. In the international market, they have successively implemented dozens of environmental protection and dust removal projects for Iran, Syria, Nigeria, Equatorial Guinea, Ethiopia, Yemen, Bangladesh, Pakistan and other countries, all of which have been well received and praised by foreign parties and won glory for the country.

The main design features of the environmental protection kiln head bag dust collector for building materials are as follows: first, the 3-inch submerged pulse valve of Australian Plateau Company or Asco Company is adopted, and the unique installation method of submerged valve is adopted, which greatly reduces the resistance and reduces the kinetic energy consumption; Second, through the change of the aperture of the opening on the blowing pipe, the pressure of compressed air blowing to the bottom of the bag can be reasonably adjusted, so that it can completely clean without damaging the filter bag; the third is to adopt reasonable filter bag spacing, so that the bottom of the filter bag does not touch each other during the ash removal process, and at the same time reduce the rising wind speed during online ash removal, which can prolong the service life of the filter bag. Fourth, high-pressure ash removal, less ash removal times, can effectively extend the service life of the filter bag; Fifth, a long filter bag with a diameter of 160 × 6000mm is adopted, with a glass fiber coated filter bag suitable for kiln tail working conditions, with a service life of more than 3 years; sixth, it is small in size and light in weight, which can save equipment costs, civil construction costs, reduce floor space, and handle the same air volume. The weight of the high-efficiency pulse bag dust collector is much lighter than that of the blowback bag dust collector.

The biggest vulnerable part of the bag dust collector is the filter bag, so the service life of the filter bag will determine the use and maintenance cost of the dust collector, and even the production cost. Based on years of experience in the design, installation and use of bag dust collectors and more than 100 cement production lines, China Building Materials Environmental Protection Company has made a number of technical improvements to extend the service life of filter bags, such as patented technology louver filter bag protective sleeve, bag cage and filter bag matching.

The company safely and effectively ensures that all projects are completed within a reasonable period of time. So far, there are more than 10 international companies in the performance of more than 100 cement production lines of China Building Materials Environmental Protection Company, of which Lafarge Cement Group is a typical representative. Through the cooperation with Lafarge, the safety management concept of the construction team of China Building Materials Environmental Protection Company has been strengthened. The on-site construction of China Building Materials Environmental Protection Company is completely in accordance with the requirements of Lafarge. In terms of design, manufacturing and installation plan, China Building Materials Environmental Protection Company will provide the owner with a detailed project implementation plan to ensure the smooth implementation of the project.