White pollution is a huge challenge in the process of human society and economic development. Since the 21st century, there has been a global trend of biodegradability, and many countries have issued stricter policies to promote the development of the industry. In December 2007, the Chinese government issued the "Notice on Restricting the Production and Sale of Plastic Shopping Bags", stipulating that from June 1, 2008, the production, sale, and use of plastic shopping bags with a thickness of less than 0.025 mm will be prohibited nationwide. And a paid use system for plastic shopping bags is implemented. The Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes, revised in April 2015, stipulates that the state encourages scientific research and production units to research and produce film coverings and commodity packaging that are easy to recycle, easy to dispose or degrade in the environment; Units and individuals of agricultural film shall take measures such as recycling to prevent or reduce the environmental pollution of agricultural film. In April 2018, the Party Central Committee and the State Council issued the "Guiding Opinions on Supporting Hainan's Comprehensive Deepening of Reform and Opening-up", which completely prohibited the production, sale and use of disposable non-degradable plastic bags and plastic tableware in Hainan, and accelerated the application of green packaging in the express delivery industry. In January 2020, the "Opinions on Further Strengthening the Treatment of Plastic Pollution" (hereinafter referred to as the "Plastic Prohibition Order") was issued, requiring the orderly prohibition and restriction of the production, sales and use of certain plastic products, and actively promoting alternative products. "Limited plastic" changed to "Prohibited plastic." It has become the consensus of more and more national or local governments to restrict or prohibit the use of disposable plastic products through environmental protection legislation, and it will also help promote the sustained, stable and healthy development of the lactic acid and polylactic acid industry. Polylatic acid (PLA), abbreviated as PLA, is a thermoplastic high polymer polymerized from lactic acid produced by biological fermentation as the main raw material. It is also a kind of polyester material. Its production process is pollution-free and has good biocompatibility. And biodegradability, its lactic acid is derived from renewable materials such as corn and wheat, so PLA is an ideal green, renewable and environmentally friendly polymer material. The production of polylactic acid uses lactic acid as a raw material, and traditional lactic acid fermentation mostly uses starch-based raw materials. At present, the United States, France, Japan and other countries have developed and used agricultural and sideline products as raw materials to ferment to produce lactic acid and then produce polylactic ac...

In March this year, Anhui Yuanchen Environmental Protection Science and Technology Co., Ltd. (hereinafter referred to as "Yuanchen Technology") successfully listed on the Shanghai Stock Exchange Science and Technology Innovation Board. This company dedicated to the R&D and industrialization of new materials for emission reduction and carbon reduction is not only the first listed company independently cultivated by Xinzhan High-tech Zone, but also the first listed company in Hefei to land on the Science and Technology Innovation Board in the first year of the "14th Five-Year Plan". Business. 1. Environmental protection technology companies are growing steadily Founded in 2005, Yuanchen Technology focuses on the research and development and application of technologies in the field of environmental protection, and pioneers and innovates in the fields of industrial flue gas dust removal, denitrification, circular economy, and smart environmental protection.   "We are an enterprise that has both high-efficiency dust removal filter materials and SCR denitration catalyst research and development, design, production and resource recycling." Yuanchen Technology General Manager Liang Yan said that the company continues to develop in the two major subdivisions of dust removal filter materials and denitration catalysts. Innovate and lead the development of the industry, and maintain steady growth in operating income and profits every year. The data shows that in the past three years, corporate revenue growth has averaged 20% and net profit growth has reached 25%. Companies continue to increase investment in innovation, and R&D expenses account for more than 5% of revenue. According to reports, the company's products are highly technologically advanced, and many products are internationally advanced in technology content. In addition, the company has independently developed a smart environmental monitoring service platform and a hazardous waste online monitoring platform, committed to providing customers with full life cycle services and creating a development model for the entire industry chain.  In recent years, Yuanchen Technology has embarked on the fast track of accelerating development and has moved towards the capital market. Relying on the continuous advancement of the national "One Belt One Road" initiative, as a comprehensive service provider of ecological environment, Yuanchen Technology continues to expand the international market, and its products are exported to Turkey, Russia, Germany, Brazil and other countries, contributing to the realization of domestic and international dual cycles. 2.Open up the development channel of the technology industry During the epidemic prevention and control period last year, Yuanchen Technology relied on a professional technical team to successfully unlock the mask black technology through more than half a month of technical research, and developed a nanofiber microporous film for mask productio...

With the increasing complexity of working conditions in the field of flue gas treatment, the functional requirements of non-woven textiles are getting higher and higher. The simplest way to give nonwovens multifunctionality is the post-treatment process. That is to carry out different types of functional finishing for various non-woven fabrics. On the basis of maintaining the original function of the fiber, the non-woven fabric can be given additional properties, such as waterproof and oil-proof, flame-retardant, and abrasion resistance, so as to be effective Broaden the application fields of non-woven fabrics. Launched by 3M in the United States, and subsequent companies such as DuPont, Daikin, and Asahi Glass have also developed similar products. Because the fluorine-containing finishing agent can impart water-repellent, oil-repellent and anti-fouling functions to the surface of the substrate without changing the original touch, air permeability, and warmth retention, it has been quickly promoted and widely used and has become the market’s Mainstream. Fluorine-based water repellent is an auxiliary agent that can impart water and oil repellency to non-woven needled felt. The application mechanism of fluorine-based waterproofing agents is to reduce the surface energy of solids by relying on the dense and regular arrangement of perfluorinated groups on the surface. Because fluorine atoms have smaller atomic radius, stronger electronegativity, higher CF bond energy and smaller intermolecular cohesion, etc., in the high-temperature setting process of finishing processing, fluorine-containing polymers are used in non-woven fabrics. A hydrophobic film is formed on the surface of the cloth. It appears that various liquids are difficult to wet or adhere to the surface. The filter material after fluorine-based water repellent treatment has the following characteristics: 1)Oil repellency: Give the filter material certain oil repellency properties, which can prevent oily dust from sticking to the bag and cause paste bags; 2) Water resistance: Give the filter material a certain degree of water resistance Attributes, can effectively avoid the paste bag caused by excessive moisture in the flue gas; 3) Anti-adhesion: prevent the dust attached to the surface of the filter cloth from penetrating into the inner layer of the filter cloth, thereby improving the filtering performance; 4) Dust removal ability: The fluorine-based water repellent treatment can form a hydrophobic layer on the surface of the filter material, so that the dust can be removed without strong dust removal measures Yuanchen Technology specially develops high-grade water and oil repellent treatment technology for specific working conditions such as high moisture content by using fluorine-based water repellents and various auxiliary ingredients to give the surface of the filter bag water-repellent properties and prevent the bag from sticking in the application. It does not cause pore clogging, i...

As the issue of climate warming has become the focus of attention, how to deal with climate warming and effectively reduce carbon emissions has also become an important issue for the international community. What is the carbon pricing? Carbon pricing is a tool to reduce greenhouse gas emissions. It can record the external cost of greenhouse gas emissions, that is, the emission costs paid by the public, such as the cost of crop damage, the cost of health care caused by drought and warming, and the property caused by floods. Losses and the impact of rising sea levels, etc., these costs will be revealed by pricing the carbon dioxide emitted. This pricing method helps to transfer the burden of damage caused by greenhouse gas emissions to those who are responsible or who can reduce carbon dioxide emissions, such as factories and companies that emit carbon dioxide. Carbon pricing does not determine who should emit where and how to reduce emissions, but provides economic signals to emitters and allows them to decide to change their activities and reduce their emissions, or continue to emit but pay for their emissions at the same time. In this way, global environmental goals can be achieved in the most flexible and cost-effective way. Setting appropriate prices in greenhouse gas emissions is fundamental to internalizing the external costs of climate change when formulating economic incentives for clean development. The main type of carbon pricing Carbon pricing can take different forms and methods. The main methods are emissions trading systems and carbon taxes. Other types include carbon pricing offset mechanisms, outcome-based climate financing, and internal negotiation prices set by organizations. 1. Carbon Emission Trading System (ETS) The carbon emission trading system is a market-based energy saving and emission reduction policy tool. Emissions units can be traded to meet their emission targets. Companies included in the carbon trading system need to have a carbon emission allowance for every ton of carbon dioxide emitted. These companies can implement internal emission reduction measures to reduce emissions, obtain or purchase these allowances, or trade allowances with other companies. The specific choice will depend on the relative cost of each option. By creating the supply and demand of carbon emission units, the market price of carbon emission is formed. There are two main types of ETS: Capand trade and Baseline and credit. 2. Carbon Tax Carbon tax is a type of tax levied on fossil fuels (such as oil, coal, natural gas) based on its carbon content or the proportion of carbon emissions. Although both carbon tax and carbon trading are adjustment methods based on market mechanisms, they are quite different. 3. Other types Carbon offset refers to individuals or organizations providing corresponding funds to carbon dioxide emission reduction projects to offset their own carbon dioxide emissions. These funds will be given to specialized enterprises ...

Dust bag is known as the heart of the bag filter, is the most critical and important part of the bag filter in the process of operation, in general the cylindrical dust filter bag is vertically suspended in the bag filter. The fabric and design of the bag are designed for high efficiency filtration, easy dust stripping and durability. In the dust removal process, when dust containing gas particles pass through the dust collector, the dust particles are trapped on the outer surface of the bag, while the clean gas enters the bag through the filter media. The dust cage inside the dust collector bag is used to support the bag and prevent it from collapsing, and it also helps to remove and redistribute the dust cake. For some special working conditions, it is important to post-treat the dust bag. General routine is divided into the following categories: 1. Burning pressure treatment This treatment is mainly with the fire mouth against the surface of the fast walking fabric, lint burning, and then use high-temperature rollers on the surface of the fabric for ironing, so that the fabric surface is smooth and easy to clear ash. This not only improves the performance of the filter media cleaning ash, but also meets the collection of fine dust. 2. Antistatic treatment Some dusts will easily burn when they meet sparks in the specified concentration state. So for flammable or explosive dust must be used after anti-static treatment of needle felt filter media. Anti-static filter media is to mix in the fiber of the filter material into the conductive fiber or base cloth woven with conductive function of the strip of yarn, so that the entire filter material are equipped with conductive properties, the use of the process of static electricity through the filter media to guide the dust collector box and the ground, to prevent the explosion caused by static sparks. 3. Waterproof and oil-proof treatment The surface of the filter bag is hydrophobic, and the water droplets can roll on the surface of the fabric, which makes it easier to catch dust and avoid and reduce the phenomenon of gluing and corrosion of the bag due to dew when the temperature difference is relatively large. 4. Easy to clear ash treatment Generally is the mirror treatment, or the surface layer with fine denier fiber surface needled on the surface of the fabric, the fabric has high quality dust cleaning performance, and can work for a long time in the higher filtration wind speed. 5. PTFE lamination treatment If the particle size of dust is less than 1 micron, or the dust has great adhesion, or the humidity of the containing gas is large, the ordinary filter media can not be effectively filtered. Teflon laminated filter media is not only high in filtration accuracy, but also has a smooth surface that does not adhere to the dust and is easy to clean, while the dust does not penetrate into the interior of the filter media. 6. Heat-setting treatment In addition to the post-processing of dust bags, du...

Ultra-Low Temperature Catalyst: Unlocking Green Solutions for Industrial NOx Control Introduction: The Urgent Need for Low-Temperature Denitrification With global attention on sustainability and clean energy, reducing nitrogen oxides (NOx) emissions has become a key environmental priority. Traditional denitrification systems struggle to operate efficiently at low temperatures, especially in non-power industries. The emergence of ultra-low temperature catalysts presents a groundbreaking solution that allows effective NOx removal at 130–150°C, eliminating the need for expensive flue gas reheating. What Is an Ultra-Low Temperature Catalyst? An ultra-low temperature catalyst is a specially developed material that enables Selective Catalytic Reduction (SCR) of NOx at lower operating temperatures. Unlike conventional vanadium-titanium catalysts that require temperatures above 180°C, these new-generation catalysts can function efficiently in flue gas environments as low as 130°C. Key Features: High dispersion of active components on porous carriers Enhanced adsorption of ammonia and nitrogen oxides Lower activation energy for denitrification reactions Customizable metal oxide systems to resist flue gas poisoning (e.g., sulfur, alkali metals) Why Traditional SCR Systems Fail in Low-Temperature Scenarios Industries such as waste incineration, biomass energy, steel sintering, and industrial kilns typically operate with low flue gas temperatures after desulfurization and dust removal. Standard catalysts underperform in these conditions, leading to increased energy consumption for gas reheating. For example: A 750t/d waste incinerator using traditional catalysts requires up to $8 million/year in heating costs. Steel sintering plants using preheating methods see additional emissions of up to 70,000 tons of CO2 annually. Application Scenarios of Ultra-Low Temperature Catalysts 1. Waste Incineration Post-treatment flue gas temperature: 130–150°C Ultra-low temperature catalysts operate directly without reheating Reduces investment by 15% and eliminates heating costs 2. Biomass Boilers Highly variable fuel and low flue gas temperatures (130–150°C) Ideal for replacing SNCR systems and meeting stricter NOx limits (<50mg/Nm3) No need to alter original systems 3. Industrial Kilns Flue gas temperatures typically range from 120–180°C Enhances heat utilization and decreases carbon emissions Achieves <50mg/Nm3 NOx levels with minimal ammonia slip 4. Natural Gas Boilers Original emissions control methods (like low-NOx burners) reduce system efficiency Ultra-low temperature SCR units achieve <30mg/Nm3 NOx without energy loss Cuts annual fuel cost by millions for 50t boilers Key Benefits for Industry and Environment Reduced Energy Costs Operates without reheating: up to 50% energy savings Example: Steel sintering projects save 30–40% on yearly operational costs Enhanced Environmental Performance Low-temperature operation reduces CO2 emissions Achieves high NOx remo...