Tightening resource constraints, serious environmental pollution, and ecosystem degradation are not only problems that a country or region urgently needs to solve, but also problems that all mankind faces and needs to work together to solve.
——Building a community with a shared future for mankind
The ceramic industry needs to face up to environmental issues to have a chance to achieve transformation< /p>
According to the comprehensive research results of the "Green Manufacturing Development Strategy Research", a major consulting project of my country's environmental protection, industry, science and technology departments, academia and the Chinese Academy of Engineering, China's industrial emissions of sulfur dioxide, nitrogen oxides and Dust already accounts for 90%, 70% and 85% of the total emissions respectively. The resource and environmental carrying capacity is almost close to the limit, and a large part of these emissions come from the industrial production of ceramics.
The pollutants produced in the production of ceramic industry can be roughly divided into the following five categories: < /span>
1. Flue gas pollutants: mainly come from particulate matter, sulfur dioxide, nitrogen oxides, etc. generated during the operation of kilns and spray towers;
2. Unorganized emissions: mainly generated in production environments such as raw material preparation, molding processes, and post-processing processes;
3. Wastewater: including mud and glaze wastewater generated from raw material preparation, as well as post-processing wastewater and desulfurization wastewater;
4. Solid waste: waste mud and glaze generated from raw material preparation, waste blanks and waste molds (gypsum) generated from the molding process, waste refractory materials, waste slag, waste bricks, waste porcelain generated from the firing and processing processes, as well as flue gas desulfurization Desulfurization solid waste generated by equipment, etc.;
5. Noise: mainly comes from operating equipment, such as material crushing equipment, ball mills, kiln fans, edge grinders, polishing machines, etc.
Among them, hazardous wastes generated during the ceramic production process mainly include: waste generated during the use of inks and organic solvents, waste generated during gas productionCoal tar and phenolic wastewater in the process. It is understood that at present, most of the firing energy sources of ceramic enterprises have been changed from furnace gas to natural gas. However, since the spray drying tower has not been forced to change gas, some enterprises are still using water-coal slurry.
Some people describe strict environmental inspections and supervision as the sword of Damocles hanging over the heads of ceramic companies. Many companies are worried about being forced to suspend production and close their doors due to environmental issues. In fact, in every industry, there are those who are on the verge of being eliminated, and there are also those who are proactive and at the forefront. There must be a gap between enterprises. In addition to economic and production strength, this gap is also a gap in concepts and thinking at a deeper level. Enterprises that pay attention to environmentally friendly production must have a long-term vision.
Someone from a certain ceramics company once said something that moved me a lot. The general meaning is: it is a fact that corporate profits are getting thinner and thinner, and it is also a fact that environmental pressure is increasing. But these cannot be reasons for not implementing green production. This is a responsibility to the country and society. We should put aside short-term interests and local interests, and think about environmental issues with an overall and long-term perspective.
It is worth celebrating that there are many forward-looking companies< /p>
On the road to green development in the ceramic industry, many companies have taken the lead in doing amazing things in environmental protection, which has greatly changed the outside world's impression of the high pollution of the ceramic industry. Here are just some examples:
New Pearl: From “green manufacturing” to “green manufacturing”
The Zhaoqing Demonstration Base of New Mingzhu Ceramics Group adopts new energy-saving ceramic kiln equipment, uses electric energy and clean natural gas as production energy, does not have a raw material preparation workshop, and uses advanced desulfurization and dust removal technology to reduce smoke emissions. The gas emission concentration is better than the latest national and industry emission standards, ensuring the green and environmental protection of the production process.
▲New Pearl Group Zhaoqing Production Demonstration Base Map 1
The author learned that over the years, Xinmingzhu Ceramics Group has invested more than 500 million yuan in environmental protection, which is used for energy conservation, consumption reduction and environmental governance. At the same time, it insists on independent research and development, pioneering and innovation, and in environmental protection In the production field, it has 4 invention patents and 7 utility patents.
▲New Pearl Group Zhaoqing Production Demonstration Base Map 2
In order to strengthen the construction of green and intelligent manufacturing, Xinmingzhu Ceramics Group has also established an environmental protection supervision office to continuously explore aspects such as sewage recycling, kiln exhaust waste heat utilization, and the consumption and utilization of production solid waste. From these facts, we can see that Xinmingzhu Ceramics Group has been actively building a green manufacturing system, following the development path of ecological civilization, and pushing the green development of China's architectural ceramics to a new height and level.
Shuncheng: "We need not only mountains of gold and silver, but also green waters and green mountains"
The author also learned that Shuncheng Ceramics Group focuses on implementing a green and intelligent development strategy, investing more than 10 million yuan in energy conservation and environmental protection every year, and comprehensively promotes the application of wide-body kilns with low energy consumption and high quality. Furnace, comprehensive and in-depth treatment of waste gas, waste water, dust, and solid waste.
▲Aerial view of Shuncheng Ceramics Group’s production base
What is very valuable is that each of these tasks has been implemented in practice: in terms of ball mills, sprays, kilns, etc., a large number of advanced equipment have been introduced, which can save 3228.6 tons of standard coal a year; In terms of wastewater treatment, a wastewater recycling and treatment system has been established with a processing capacity of 5000m³/h. The treated water quality meets the requirements for clean production recycling water, achieving zero discharge of industrial wastewater; in terms of waste gas and dust control, more than 10 million yuan has been invested to establish exhaust gasThe desulfurization and denitrification system has a processing capacity of 2 million m³/h. The treatment effect is better than national and local emission standards, achieving ultra-low emission requirements.
▲Deputy Secretary General of China Building Materials Federation, Director of Science and Technology Department,
Professor Pan Donghui, President of China Non-Metal Mineral Industry Association, and senior engineers inspected Shuncheng production base
At the same time, Shuncheng Ceramics Group continues to upgrade its production equipment, introduces high-tech equipment, and achieves remarkable results. From manufacturing to green and intelligent manufacturing, it has set a good example for the transformation and upgrading of the ceramic industry.
Gold Medal Asia: Impeccable "dust-free and noise-free workshop"
Gold Medal Asian Tile has always adhered to the production principle of sustainable development. The factory inspection report produced by the China Quality Certification Center shows that the Gold Medal Asian Tile factory has passed every strict inspection, and There are no improvements. The entire line is an intelligent and environmentally friendly production line of more than 600 meters, using natural gas as production fuel, and the production workshop is silent and dust-free.
▲Gold Medal Asia Ceramic Tile Ceramic Large Slab Production Line
" Not in production.
Whether it is the green building materials evaluation label or the green demonstration factory, they fully illustrate the truth:The ceramic industry can not only achieve environmental protection standards, but also achieve green manufacturing. But this is not enough. In addition to paying attention to whether the discharge of various pollutants such as industrial waste gas, waste water, and waste residues meets standards,Green manufacturing must be based on environmental protection.Above all, all aspects of the digestion of solid waste after the end of the product life cycle, as well as resource extraction and conservation utilization, are considered.
Wang Yongqing, deputy dean of the School of Materials Engineering of Jingdezhen Ceramic University, gave a special speech on "Ceramic Green Production Design" during the 33rd Guangzhou Ceramic Industry Exhibition. When talking about solid waste treatment, Professor Wang praised several companies in Guangdong by name: "I know that many companies in Guangdong do not have solid waste coming out of the factory. For example, Shuncheng and Hongyu do not have solid waste coming out. They are beautiful production bases." Solid waste management is also done well. ”
In fact, the most effective and economical way to utilize solid waste is for enterprises to digest it themselves. Solid waste can now be made into permeable bricks or foamed ceramics; at the same time, the consumption of raw material mining and production energy is also a waste of the ceramic industry. The focus of the public's repeated complaints. In response to these two problems, some companies are currently formulating solutions and launching corresponding new green materials.
"Jinyi Tao Foamed Ceramics" and "Mona Lisa Ceramic Sheet":< /p>
A new interpretation of green production from the perspective of resource utilization and conservation
On October 19, 2017, Foshan Jinyi Green Energy New Material Technology Co., Ltd. officially announced its establishment, and the foamed ceramic plate LSEE was also officially unveiled. In May this year, Foshan Jinyi Green Energy New Material Technology Co., Ltd. was approved to establish a district-level foam ceramic engineering technology research center. When expounding the company's future strategic plan, He Gan, chairman of Jinyitao Group, revealed: In 2019, Jinyitao will focus on the field of building materials and build a foam ceramic production base to promote the healthy development of the foam ceramic industry.
▲Jinyitao New Material Production Line
In addition to the recently popular foamed ceramics, the new green materials also have to be mentioned the Mona Lisa’s ceramic sheets. Produced with Mona Lisa in 900×1800× Take 5.5mm ceramic thin plate as an example. The same 1 ton of raw materials can only produce 23 to 25 square meters of ordinary ceramic tiles, while the output of ceramic thin plates can reach 83 square meters. Compared with traditional ceramic tiles, ceramic sheets save 75% of raw materials, save more than 50% in comprehensive energy consumption, and reduce smoke and dust emissions by more than 64%. From the usage of raw materials to the production process, the environmental protection goals of "material and energy saving" are reflected.
▲Mona Lisa Sheet Demonstration Production Line
Green environmental protection is a stronger competitiveness than price, technology and capital
The progress of civilization and society is triggering far-reaching industrial changes and forming a new industrial ecology. Green environmental protection represents the direction of change in today's science and technology and industry, and is one of the most promising development fields. one.
Building green environmental protection competitiveness can make green environmental protection an important feature for consumers to identify brands, create barriers that are difficult for competitors to imitate and overcome, and at the same time help enterprises to cope with increasingly stringent environmental standards. Improve sustainable development capabilities. As a traditional industry in my country, the implementation of modern green industrial production has always been the constant development direction of the ceramic industry. Ceramic companies should actively seize the opportunities and challenges of the new round of development and jointly promote the industry towards a better and healthier future.
I hope this article can help everyone see the positive side of the "ceramic environmental war" amid the overwhelming negative news about the "coal-to-gas" transition in a certain province and the large-scale suspension of production by ceramic companies.
