The news that Xi'an is about to host the World Expo will not only attract much attention in China, but also be highly valued by various environmental organizations and environmentalists overseas. A few days ago, Dong Xiaojiang, a teacher at the School of Medicine of Xi'an Jiaotong University, posted a message on the Xi'an News Network Old Town Root Forum to convey his blessing to the Xi'an World Expo for his teacher at the University of Washington.Dong Yujiang told us that his teacher, Mr. Albos, is a professor at the University of Washington and a Chinese traditional culture and Chinese gardening enthusiast. After learning that Xi'an will hold the World Expo this year, he will call Dong Yujiang for the first time to learn about all the information related to the Xi'an World Expo. Dong Yujiang said: "In the communication with me, he seems a little excited. When we discussed the topic of environmental protection, Professor Albos placed high expectations on the Xi'an World Park, hoping to pass this international environmental event, gardening. The event can really make people understand the importance of environmental protection and actively protect and beautify the environment in the future."Dong Yujiang recalled: "Remember that in the United States, Professor Albos often said to our students: 'All I have to do is educate people and plant trees and flowers in their yards, which can greatly reduce greenhouse gases. Emissions, improving the natural environment of the metropolis.' According to Dong Yujiang, Mr. Albos lives in Bremerton in the Seattle area and is also a very famous environmentalist in the United States. He and his wife bought a four-acre garden a decade ago, when the open space was covered with weeds and shrubs, and they worked together for more than a decade to create everything here.He described in his post: "Now here, you can see the towering cuckoo trees and eucalyptus trees. The beautiful maple trees and magnolia trees are hidden from each other. The paved roads are surrounded by lush heather. And the lavender with a cluster of purple flowers, from the far to the far, looks like a beautiful oil painting, which is the "Vision Park" that they jointly established in the local area. Although it has passed China in the future, But Professor Albos has great interest in this mysterious country of the East. In his garden, you can see traditional Chinese culture and horticultural art with rich oriental features. It also provides free accommodation for tourists and his wife. Plants and publicize the importance of environmental protection and greening."At the World Expo, Professor Albos could not come to visit because of his busy schedule. He expressed his regret, but he still hopes to convey his good wishes to the Xi'an World Expo through his students and love environmental protection. Xi'an citizens expressed their gratitude. Dong Weijiang said that Professor Albos also expressed the hope that he can promote his environmental protection concept in the World Expo, so that green and environmental protection can be more deeply rooted in the hearts of the people. I hope that all environmentally friendly people can work together to make our homes together more healthy. beautiful.
Polaris Energy Conservation and Environmental Protection News: The newly revised Environmental Protection** will be implemented from January 1, 2015. As the new "Environmental Protection Law" has increased the provisions of daily punishment, seizure and seizure, administrative detention, etc., and increased penalties, it is called "history * strict environmental protection law." This also means that starting in 2015, companies will face a more stringent environmental enforcement environment. Li Wei, deputy researcher of the Punishment Division of the Environmental Supervision Bureau of the Ministry of Environmental Protection, said that the implementation of the new Environmental Protection Law, the government and enterprises, was held at the symposium on the implementation of the newly revised "Environmental Protection Law" by the China Environmental Record Association. I should be mentally prepared for the four aspects. First, the original enterprise was the "seat guest" of the local government. It was the local government's investment attraction. The government will inevitably open some "convenience" to the enterprise, and the enterprise must be "weaned". Second, the local government has a big package. However, the new "Environmental Protection Law" stipulates the local government's environmental responsibility. If the law is illegal, the third is the technical preparation. The company will discharge excessively from time to time. The reason is that the sewage treatment facilities are repaired or damaged and temporarily suspended. "Required that as long as the discharge is not met, the punishment will be severely punished. Therefore, "the technical transformation will be carried out on the technical transformation", "the environmental protection equipment will be quickly put on the equipment"; Fourth, the environmental protection department's law enforcement ability is put forward high requirements.
The bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of a woven filter cloth or a non-woven felt, and the dust-containing gas is filtered by the filtering action of the fiber fabric. When the dust-containing gas enters the bag filter, the dust with large particles and large particles settles down due to gravity and falls into the ash hopper; when the gas containing fine dust passes through the filter material, the dust is retained and the gas is obtained. Purification.China's "Twelfth Five-Year Plan" puts forward higher demand for environmental protection. Water, gas, sound and slag will all be more applied to filter materials, and the market prospect of filter materials industry is promising. Among them, in the field of dust control, bag dust collectors are widely used at home and abroad due to high dust removal efficiency, no secondary pollution and easy recycling of dry materials, accounting for 80% of the dust removal equipment used. At present, China's bag dust removal technology has reached the international advanced level, can meet the increasing environmental protection requirements, and can create favorable conditions for the sustainable development of the national economy.Although the bag filter has many advantages, once the filter bag fails, it will cause the device to discharge, the dust is exceeded, and the replacement of the filter bag is also a huge expense. It is especially important to recognize the failure of the filter bag and pay attention to it in order to avoid it. The following summarizes and analyzes the problem of filter bag failure that often occurs in the cement industry.
The working principle and basic structure of the sintered plate filter are similar to those of the bag filter. However, since the filter element is made of a special sintered plate material, the dust collector (for example, bag dust removal) is manufactured with a conventional fiber filter. Compared with the device, the flat bag dust collector, the filter cartridge dust collector, etc., it has many unique advantages. The specific principle is that the dust-containing airflow enters the dust chamber of the middle tank through the deflector at the entrance of the dust gas, and the gas purified by the sintering plate is discharged through the fan. With the increase of dust on the surface of the sintered plate, the cleaning control system of the timing or differential pressure mode will automatically open the fast-open pulse valve to effectively remove the dust on the surface of the sintered plate by compressed air. The sprayed dust is discharged after being dropped into the ash bucket by the action of gravity.The components mainly include sintered plate filter, backflushing system (such as pulse valve, air bag, etc.), dust collector box (access door, flower board, etc.), control system, pneumatic triple piece, differential pressure system and so on.At present, Aier Environmental has cooperated with Japan Nippon Mining Technology Co., Ltd. to develop AR-SP sintered plate dust collector. The sintered plate is used as the core filter element dust collector. It has ultra-high filtration efficiency, long service life and almost zero maintenance. It is widely used in rubber, metallurgy, chemical, non-ferrous metal smelting and other industries where the dust removal is difficult. Responding to new trends in development,
The "Notice" pointed out that June 5 this year is the World Environment Day after the implementation of the new "Environmental Protection". All localities and departments should seize the favorable opportunity, increase the publicity of environmental protection, and effectively organize the World Environment Day. Publicity and commemoration activities will create a good atmosphere for the whole people to participate in environmental protection and ecological civilization construction.The "Notice" pointed out that the theme of this year's World Environment Day is "Practicing Green Life", aiming to spread the concept of "green lifestyle" to the whole society. All localities should closely follow this theme to plan and implement publicity activities, sing the main theme of green life, and let "practice green life" become the consensus and action of the whole society.The "Notice" requires that during the World Environment Day, all localities should plan and organize thematic publicity activities that affect people's lifestyles and consumption patterns; design and produce environmental culture and publicity products that the public likes to hear; hold a press conference to inform the environmental quality and the new "environmental protection" **》 Implementation progress; vigorously publicize and commend the advanced model of “practicing green life” and expose negative examples. In this process, we must pay attention to increasing the intensity of network communication and give full play to the propaganda role of new media.The "Notice" emphasizes that environmental protection departments at all levels should strengthen leadership, make overall arrangements, and organize the organization of World Environment Day propaganda as an important task in the near future. It is necessary to vigorously strive for the support of the government's main responsible comrades, actively coordinate other relevant departments to jointly carry out environmental protection publicity activities, and strive to expand the coverage of publicity and increase the influence of the activities.In addition, the "Notice" pointed out that all localities should timely summarize the good experiences and good practices of the World Environment Day propaganda work, and explore the characteristics and laws of the World Environment Day propaganda work. The Ministry of Environmental Protection will report on the promotion of World Environment Day in various places.
Since entering June, Ye Wen (a pseudonym), the vice president of a large bag filter manufacturer, is in a good mood. The good news released in succession shows that the bag filter industry will usher in the development of “spring”. On June 14th, Premier Li Keqiang of the State Council deployed 10 measures to prevent and control air pollution and announced the launch of PM2.5. The Ministry of Environmental Protection recently listed a series of industrial pollution guidance documents to classify bag filters as standard equipment. According to industry insiders, the whole country The air pollution prevention action plan is about to be released... Wang Huailiang, a senior securities official, estimates that more than 60 billion yuan of market demand will be released. Some industry people are suspicious of the "60 billion market demand." They believe that the gold content of the market demand of 60 billion yuan is worthy of scrutiny when the environmental protection standards are relatively loose, the public environmental awareness is relatively backward, and some local monitoring and regulatory agencies are derelict, and the underlying rules of low-cost bidding are rampant. Then, for the bag filter industry, is the legendary market demand of 60 billion yuan a feast, or is it self-entertainment on paper?Bag filter will be "Great Leap Forward"? “We have emitted more air pollutants from the world*, but we do not have the corresponding accommodation space.” Wu Shanzhen, secretary general of the Bag Dust Removal Committee of the China Environmental Protection Industry Association, said, “Particle pollution is the main cause of haze weather. Industrial dust emission is the main source of particulate pollution. China's air pollutant emissions are huge. According to the public data provided by the environmental protection department, the total emissions of sulfur dioxide and nitrogen oxides in 2010 were 22.678 million tons and 22.736 million tons, respectively. ***. The emission of smoke dust is 14.461 million tons, far exceeding the environmental carrying capacity, and the bag filter is the 'main force' for the control of industrial smoke (powder) dust. "**The dust collector mainly includes two types of electric precipitators and bag type dust collectors. For the treatment of dust, the bag type dust collector has the characteristics of stable operation and **, and the actual dust removal efficiency can reach above 99.95%. Flue gas dust emission concentration can reach the standard below 15 mg/m3 without costly. For fine particles with a particle size below 10 microns, the bag filter can capture more than 90%. It can be said that currently Only the bag filter can effectively control fine particles, so it is widely used in more than 20 industries such as steel, cement, electric power, non-ferrous smelting, waste incineration, etc. China's particulate matter emission control has entered a strong eradication of PM10, PM2.5 era, if Can not effectively reduce the emission of ultra-fine particles, beautiful China and air pollution control targets can not be achieved. In other words, in order to further control the emissions of smoke dust, PM2.5 capture will be the focus." Wu Shanzhen said. Professor Sun Xi, director of the Filter Materials Testing Center of Northeastern University, said: “The waste incineration flue gas contains a variety of harmful gases. The characteristics of the 'fixed bed' of the bag filter are of great value to the purification of waste incineration flue gas. One of the purification methods of dioxin is to remove the activated carbon and then remove it with a bag filter." It is reported that China's bag-type dust removal technology has made rapid progress, and many raw material problems and technical problems that could not be solved before have been successfully solved. Such as cement kiln head, aramid used for kiln tail, pulse valve for polyimide fiber and cleaning, PTFE fiber for waste incineration plant, glass fiber blending technology, PPS fiber and filter material for power industry, membrane Technology and membrane filtration materials, which used to rely mainly on imports, are now mostly domestically produced. In addition, the design and manufacturing capacity of China's bag filter has reached the world's advanced level, such as bag filter for blast furnace gas purification, tail bag filter for cement kiln head; hundreds of millions of dollars of products are sold to the United States and Japan each year in China. , India, the Middle East and other countries and regions.The tens of billions of market demand is about to be released? As the person in charge of one of the leading companies in bag filter, Ye Wen believes that the continuous introduction of favorable policies indicates that the industry environment is heating up. “It is obvious that the bag filter market will be greatly expanded,” he said. Ye Wen said that under the background of the current focus on PM2.5 and PM10, the bag dust removal application market is expected to expand further. According to the ** report released by the China Environmental Protection Industry Association Bag Dust Removal Committee this year, the cement, non-ferrous metal smelting and thermal power industries will provide huge market space for the development of bag filters. The documents issued by the National Development and Reform Commission and the Ministry of Environmental Protection stipulate that after the waste heat of the cement kiln head and the kiln exhaust is used, it must be treated by a bag filter to make the concentration of particulate matter in the flue gas meet the discharge standard requirements, other ventilation production equipment and dusting points. A bag filter should be used. The dust source generated by each production process in the steel industry is encouraged to use the ** bag filter. According to public data, more than 90% of the 800 million kilowatts of active thermal power units that have been put into operation in China are equipped with electrostatic precipitators. For example, the bag-type dust collectors are replaced by an average cost of 50 yuan/kW, and the potential market space is 36 billion yuan. . According to national and local environmental protection requirements, cement kilns should strengthen the control of nitrogen oxide emissions, strictly control ammonia escape, and strengthen the safe management of reducing agents such as liquid ammonia. In the steel industry, desulfurization should be fully implemented in the sintering flue gas, taking into account the removal of multi-component pollutants such as nitrogen oxides and dioxins. According to estimates by relevant people, less than one-tenth of the cement production lines in the country have installed denitration equipment. In the future, 90% of the cement production lines need to be rebuilt, and the market space is huge. Market analysts pointed out that PM2.5 in 33 cities in China is seriously exceeding the standard. In the future, the market improvement space is mainly aimed at improving the actual dust removal, desulfurization and denitration efficiency, and conducting investigations on dust removal, desulfurization and denitrification facilities that cannot meet the standard, and rectifying within a time limit. According to the public data, there are 4,659 desulfurization units currently in operation in China, with a total installed capacity of 718 million kilowatts. Assume that 50% of the desulfurization facilities need different degrees of transformation, the average transformation cost is 60 yuan / kW, and the potential market size is 21.5 billion yuan. The current desulfurization market is about 10 billion yuan.Is there an undercurrent that hinders the release of market demand? Yu Xia (a pseudonym), marketing manager of Beijing Bohai Qingtian Technology Environmental Protection Co., Ltd., is also paying attention to the expansion of the bag filter market. Although Yu Xia and Wu Shanzhen did not talk about it, their views are consistent: the environmental protection policy and its implementation have a great decisive effect on the expansion of the bag filter market, and the current policy intensity and supervision are obviously insufficient, and the market is expanding. It may not be easy. "Whether for a country or an industry, China's air pollution has reached the time of the problem." Wu Shanzhen said. As a weapon for adsorbing PM2.5 fine particles, bag filter is one of the indispensable equipment for promoting energy saving and emission reduction. However, the scale of development of the industry has always been inconsistent with its important position. According to public data, in 2005, the industrial output value of bag filter was 6.496 billion yuan, and in 2012 it was 14.674 billion yuan, which only more than doubled in six years; its market share of dust removal equipment was 46 in 2005. % increased to 55% in 2012, with a growth rate of less than 10%. "China's population density is large, industries are so concentrated, air pollution is serious, and it is time to implement the world's strict emission standards. However, China's current environmental standards are not perfect, emission standards are lagging behind, environmental protection supervision is not enough, and law enforcement is not strict. Many enterprises that are not environmentally conscious and have no sense of social responsibility can take advantage of them. In order to cope with inspections or barely meet national standards, some enterprises purchase bag-type dust collectors that are extremely cheap and have poor dust removal effect, and have not been modified for many years. Broken and not replaced, making it a device that can't play a corresponding role at all." Wu Shanzhen said. “The environmental protection industry has always been a passive market. Owners often invest in environmental protection facilities because of policy pressure. If this pressure is not strong enough, or if alternative measures can be found, the owner will not spend money to buy environmentally friendly equipment with superior performance. Satisfied with the status quo of 'have'." Ye Wen said.In the past, the unspoken rules are one of the undercurrents that hinder the development of the industry. "Fake, adulteration, and work-scraping are common occurrences; the bag-type dust removal industry currently has serious overcapacity and low-end products, which is related to the industry's popular low-cost bidding. The bidding procurement should have strict regulations, and the current low-price bidding phenomenon Generally speaking, many bidding prices are losing money. The products provided by enterprises are definitely not the quality products of regular manufacturers, and it is difficult to meet the standards." “The average profit margin of bag filters is very low, less than 10%. Most companies have been struggling on the survival line.” Wu Shanzhen sighed.Where is the market expansion escort ship?As a senior researcher who has participated in many national research projects on bag dust removal technology, Professor Sun Xi knows the ups and downs of the bag filter industry. He believes that the entire environmental protection industry, including bag filters, is an external development industry, which is obviously affected by policies and the environment. Perfect environmental standards, strict environmental protection policies and strong supervision are the driving force for the development of the bag dust removal industry. Sun Xi said that the current standards for air pollution control in China are backward and need not be revised. "In recent years, China has revised the emission standards of some industries. The limit of particulate matter emission is 30 mg/standard cubic meter. Although it is much stricter than before, it is still lagging behind the international advanced level. China's waste incineration flue gas The emission standards are more lenient, and the particulate matter concentration limit is 80 mg/standard cubic meter, while in many developed countries, the standard is 5 mg/standard cubic meter. In fact, the good performance of the bag filter can support more stringent environmental protection. standard."Wu Shanzhen said that the problem of backwardness in air pollution control standards mentioned by Sun Xi does exist. For example, China's current mercury emissions account for about half of the world's emissions, is a mercury emitter, and mercury is mainly discharged from the chimney. Regarding the emission limits of mercury, some industries have some, some industries do not, and there is no need to prepare. Ye Wen believes that strict supervision of operating equipment is a top priority. “Although there are areas that need to be improved and strengthened in terms of standards, specifications, bidding, etc., it is currently* important to strengthen the monitoring of the operation of the facilities. Some industries have done a good job in online monitoring systems, such as electricity and boilers. The dust removal system is connected to the local EPA's online monitoring system and is directly tested. Such advanced experience is worth promoting," he said. Sun Xi believes that environmental awareness is also a very important factor. During the '7th Five-Year Plan' period, the power industry pilot failed to use bag-type dust collectors, and the senior leaders of the power industry at the time indicated that the entire power industry must use electrostatic precipitators. By the beginning of this century, the application of bag-type dust collectors in the thermal power industry was technically impeded. Has been overcome, more and more power plants use bag filters, their emissions are less than 20 mg / standard cubic meters, I hope that the leadership of the power industry can be transformed from thinking.