The Ecological Environment Department announced that the power lead battery pollution control commencement will draft how battery recovery is?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - ተንቀሳቃሽ የኃይል ጣቢያ አቅራቢ

Recently, the Ministry of Ecological Environment issued a state environmental protection standard "Waste lithium-ion power storage battery treatment pollution control technology (Draft for Comment)" (hereinafter referred to as "Technical Specifications"), aimed to prevent waste lithium-ion power storage batteries from polluting the environment, protect human health. China has the world's largest new energy auto market, in recent years, the development momentum is rapid. The lithium ion battery is considered to be one of the power cells preferred by new energy vehicles due to its advantages of high energy density, small self-discharge performance, recyclable use.

It is worth noting that due to the limited life of the lithium-ion battery, the technology is continuously updated, and the lithium-ion battery is about to usher in scale, scrapped "small peak". If the waste power storage battery is improper, it will bring problems such as health, safety, environmental pollution. So what does the "Technical Specification" mean for my country's powered battery recovery industry? What kind of promotion of resource regeneration use, and the pollution control of the waste power battery, and how to promote? In order to improve the system statistics, this year my country's powered battery will enter the scale of retirement, according to 70% can be used for the calculation of the ladder, about 60,000 tons of power battery needs to be scrapped.

Power battery recycling is imminent. Where to waste lithium ion power storage, how to achieve cleaner, green, safe way, these problems become the focus of industry concerns. The introduction of "Technical Specifications" may allow the industry to develop roads.

"Technical Specifications" first give a clear definition of "waste lithium ion power storage": losing the original use value, or the lithium-ion power storage battery that is not lost, but disposed or abandoned, does not include the main return of the shelf life Fault detection, repair refurbished lithium-ion power storage battery. Further, from the aspects of pollution control technology requirements, operating environment management requirements, environmental emergency management requirements, etc. "At present, the industry's requirements for environmental protection, the introduction of" Technical Specifications ", through the existence or potential pollution risk of current power battery, greening the power battery recycling process, promoting the industry more standardized developing.

"The Researcher of the Process Engineering Institute of Chinese Academy of Sciences" Chinese Science News ". "Before this, my country did not specifically put forward pollution prevention requirements for the power battery recovery industry, only general rules. "Yang Qingyu, deputy secretary general of China Battery Alliance, believes that as an important component of the entire recycling industry normative system," Technical Specifications "has the characteristics of industry itself, and put forward detailed and specific requirements for pollutant control on corresponding recycling companies, help In the power battery recycling industry to the green, environmentally friendly development, promote industrial transformation and upgrading.

In fact, in recent years, domestic power battery recycling policies have continued to update, involving power battery management methods, traceability management, management platform construction, standard conditions, outlet construction and operation, etc., and build power battery recycling and utilization full life cycle country Standard system, guide industry healthy development, promote power battery security and orderly recycling. Policy guidance promotes enterprise recovery awareness.

According to the Statistics of China Battery Alliance, as of February 2020, 130 companies in the country declared 11229 recycling service outlets, and the average car company declared 86 recycling outlets. "The policy system is gradually formed, the standard is gradually improved, and the construction of the entire recycling channel system has also been more. Yang Qingyu said.

Different from different requirements of different requirements, the continuous improvement of the pollution control of the power chain, promoting the green sustainable development of the industry. In terms of pollution control technology requirements, the "Technical Specifications" has been detailed from the requirements of pollution control technology, end pollution control technology requirements. Sun Wei said that in terms of technical route, there are two main types of industrial applications.

One type is the fire-wet joint recovery process, so that the waste battery is prepared by high temperature smelting, further wet separation and purification, resulting in related products. Another type is pyrolysis pretreatment - wet metallurgy combined recycling process. That is, the organic matter of the waste battery is first removed, and the sorting is selected, the black powder rich in lithium-rich elements is obtained, and then the black powder is recovered by the wet leaching process to further prepare the battery positive material.

"The two routes have a feature, all hope 'from the battery', then 'return to the battery'. "Sun Wei said. In fact, in terms of the power battery recycling industry, my country has gone to the front, "because our problems and demand have appeared earlier, more urgent".

Waste lithium-ion power battery recycles involving collecting, storage, transportation, and discharge, breaking, sorting, metal extraction, etc., different sections have different requirements for pollution control. Yang Qingyu told the "China Science News", in the collection of storage, focusing on the problem of electrolyte leakage.

Lithium hexafluorophosphate is the most important part of the electrolyte, about 43% of the electrolyte, it is easy to volatilize, release hydrogen fluoride pollution to the environment. In the dismantling sort, the smelting link needs to ensure the selection of the working environment, and the treatment of exhaust wastewater wastewater wastewater. "Realize green safety recovery, close to the enclosure of enterprises, environmental equipment, environmental protection technology, etc.

"Sun Wei also said that the risk of power battery environmental pollution is one of the most concerned issues in the industry. In addition to the electrolyte leak, there is also a heavy metal contamination of copper nickel, secondary waste residue during treatment; in addition, if the treatment is improper, the residual electricity may cause spontaneous combustion, explosion, etc. He pointed out that "the former treatment process is the focus of power battery recovery pollution control.

"In recent years, relevant companies have begun to design how to consider how to make more convenient, safe and environmentally friendly when the battery is recovered during the front end of the battery. "To take into account the needs of electric vehicles, the difficulty is still relatively large, but there are attempts at home and abroad to explore. "Sun Wei said.

The prospects have a wide range of continuous exploration, and the rapid development of new energy vehicles has led to the growth of lithium-ion power cells, and also brought a broad market prospect to the recycling of lithium ion power batteries. There are data forecasts, in 2020, my country's power battery recycling market will reach 10.7 billion yuan, of which is about 6.

4 billion yuan in the rails, and the regeneration market is about 4.3 billion yuan. Yang Qingyu said that the core of battery recycling is to extend the full life cycle of the battery, enhance the value of regeneration.

Among them, the battery's ladder is worthy of attention, from the power battery unloaded from the new energy vehicle, according to the safety detection and life estimation, it can also be applied to low-speed electric vehicles, electric bicycles, small-scale distributed energy storage. "In addition to technology, the current industry is more concerned about recycling scale and economy. "Yang Qingyu is confident, the number of retired power batteries in the market is below the industry expectations, the recovery is insufficient, the lack of scale effect may be the common problem of battery recycling enterprises.

In his view, the reason may include consumers' consciousness, recycling channels are not smooth, etc. "When the power battery capacity is attenuated to 80%, it reaches the car scrap standard, but the battery is higher, and the consumer will 'replace the battery is not as good as the two years. "Yang Qingyu said that in general, the battery is retired, the industry is broad, one side needs to guide consumers to recycle batteries through regular channels, on the other hand, to strengthen supervision.

Li Jinhui, Professor Li Jinhui, a Tsinghua University Environmental College, in recented perspective of the paper of the 15th Solid Waste Management and Technology International Conference, the current construction of my country's power battery recycling system is not perfect. At present, the power battery recycling system mainly relies on the construction of automobile production enterprises, there is a certain security risk, and the professionalism of operators is insufficient. In addition, the coverage of the power battery recovery system is increased, and the overall recovery cost is high, and the efficiency of recycling and utilization is not obvious.

The cooperation of upstream and downstream enterprises is to be strengthened, and the resource allocation of the recycling system needs to be optimized. In the view of Sun, the future needs to strengthen the automation level of battery recovery technology and equipment. "Due to the difference in differential differences in the battery pack, there is a large improvement in the technology of dismantling and other technologies.

"Experts pointed out that it is necessary to form a company-led battery recycling industry chain, and also need to promote the guidance, scientific support, public support, etc. China Science News.