Where is the energy saving and emission reduction engineering machinery

According to a survey conducted by the Chinese Academy of Sciences, China is one of the countries with the most serious waste of natural resources in the world, ranking 56th among the 59 countries surveyed; according to statistics, China’s energy efficiency is only 26.9% of the United States, Japan 11.5% of the construction machinery as the second largest use of internal combustion engine products, although the scope of work is limited to the construction site, but because of its high density, emissions are inferior to the car, the more serious pollution to the environment.

Since the Copenhagen conference, the U.S. and the European Community have unified their thinking. Since January 1, 2014, non-construction machinery vehicles have been forced to adopt the Tier 4 standard. The Tier 4 standard is currently applied in China, and is proposed by energy and environmental protection experts. China will start to impose a carbon tax on the "Twelfth Five-Year Plan," and it is unlikely that large quantities of low-level construction machinery will be produced in the future. Therefore, the task of energy-saving and emission reduction in the construction machinery industry is even more arduous.

Expert advice: Compulsory obsolescence of old equipment

According to the spirit of the country's promotion of energy-saving and emission-reduction work, some experts suggest that we can refer to the automobile industry and adopt legal measures to implement the mandatory scrapping system for old construction machinery products, which is expected to help promote the continuous promotion of energy conservation and emission reduction policies from the market perspective.

According to reports, most of the engines used in older products are assembled from the new machine when they are offline. The CO2 emissions of these internal combustion engines are far higher than the industry standards that are used. The hydraulic systems used on older products The existence of running, running and leaking is also one of the main factors that lead to pollution and waste of resources. Although these kits can be solved through replacement, if the entire hydraulic system is dismantled and redone, the cost is very high. Moreover, it is not known whether the hydraulic systems used in the industry can match old models.

Experts believe that although China’s construction machinery market’s inventory has only rapidly increased since 2000, the formulation of the scrapping period is not a temporary measure to eliminate old products. In the next few years, products manufactured after 2000 will also be At the onset of aging, the internal combustion engine products used at the time were now out of compliance with the emission standards. The number of products that have accumulated since the beginning of 2000 has been very small, and if the legislation is then reissued, the price paid may be even greater. For the mainframe and accessories companies Says that if they implement the retirement system, they can safely eliminate outdated production capacity when they are renewing their production facilities, and do not have to worry that there is no supply of matching parts when users need to repair old products. This reduces the burden on the enterprise, The source of production accelerates the pace of technological innovation and development of the industry as a whole. In addition, the setting of scrapping time will also reduce the potential safety hazards of the industry. The operating intensity of construction machinery products is generally large, the aging of components and steel is inevitable, and the operating environment of some products. The high risk factor causes many safety hazards in production and life. Imagine a long-term service Machine, if the boom breaks occur, the consequences could be disastrous if the same practice and the automotive industry annual inspection system for products, and the implementation of scrapping, will avoid the tragedy to a great extent.

There are three major problems in implementing the elimination system

Although there are many advantages in the implementation of the mandatory scrapping system for construction machinery products, the difficulty of implementation is difficult to measure. Therefore, experts suggest that the enforcement of the mandatory scrapping system for construction machinery products needs to solve three major problems. First, the user boycotts. The old construction machinery products have many advantages. However, the construction machinery products are an industrial production material. It can bring economic benefits to the users and can be used more once to obtain more benefits. It is difficult to determine whether the user accepts the compulsory scrapping system. For large and medium-sized users, their product update cycle is relatively short, but small businesses with only a few products will inevitably have resistance. Second, the secondary market is difficult to control. Old construction machinery products no longer pass. Host manufacturing companies have entered the market, and the secondary market has become the main channel for their circulation. Therefore, how to manage the secondary market has become the key. It is very difficult to control the flow of this part of the product, and these products are precisely the largest environmental pollution. Third, the distribution of products Too broad, law enforcement is too difficult. There is a considerable portion of engineering machinery products flowing to mines or other remote areas. It is difficult to determine whether these areas can cover these areas. The law stipulates that with trailer trucks and mining trucks, the scrapping period is 8 years, and applications can be postponed to 12 years. In fact, most of these products have been used for less than the age limit. In the end, users will naturally dispose of them in time. However, some construction machinery products such as bulldozers and loaders are relatively small in operation intensity and may not change much in ten years. How to regulate The products in these areas are also difficult.

Solve the problem of emissions by treating both

At the 2006 BICES (Beijing Construction Machinery Exhibition), Guizhou Zhanyang Power brought a hybrid wheeled excavator product. In 2009 BICES, Sany Heavy Industry and Komatsu also launched their own hybrid products. There are more and more companies that are conducting hybrid tests. This is very encouraging. However, experts believe that this is still a method to stop the symptoms, power loss in the two conversions of power, battery pollution, and safety... ...Every problem is difficult to solve. From an environmental point of view, electricity is a clean energy source that does not produce emissions or carbon dioxide. But one thing that cannot be ignored is the environmental protection of the battery itself.

Experts said that solving the emission problem of construction machinery must be started from the power system, but this problem has not been paid attention to by internal combustion engine companies. Although the sales volume of construction machinery products is large, compared with the automotive industry, it is still a trivial task, so the internal combustion engine companies The research and development focus is generally on the automotive industry where the working environment is relatively stable. Therefore, to solve the problem of energy saving and emission reduction of construction machinery, it must be two industries, and even a number of industries can work together to succeed. Experts emphasized that in solving energy-saving emission reduction issues At the same time, companies should actively broaden their thinking. It cannot be because there is already a hybrid solution. After all, construction machinery is not an electric toy. After all, relying on electricity is only an expedient measure. Each can promote construction machinery. The energy saving and emission reduction methods of products are worth encouraging.

Remanufacturing to save energy and reduce emissions

It is understood that most of China’s construction machinery and equipment are in an overloaded state. At present, 80% of the in-service engineering machinery in China exceeds the warranty period. If the equipment products to be eliminated are rehabilitated, they will be able to obtain greater costs at a lower cost. Rewards, and reduce energy consumption. Some experts predict that the size of China's remanufacturing market can reach 10 billion US dollars annually.

According to experts, the construction machinery remanufactured products have two distinct features of cost reduction, energy saving and environmental protection, and are a high-end recycling method. The advanced machinery is used to completely dismantle the used machinery and equipment according to the manufacturing model, and produce them. Fully equivalent to the remanufactured product of new product performance and quality, so as to achieve efficient secondary use. Remanufactured products use cutting-edge technology to not only minimize costs and gain profits, but also to reduce waste emissions and reduce raw materials needed for manufacturing new parts. Demand, providing solutions for environmental protection. Remanufactured products are 60% more energy-efficient than new products, and on average 70% of parts can be reused, saving over 80% of energy consumption in the manufacturing process. On average, only 30% 40% of new products, the cost is actually less than the original 50%, gross margin is much higher than new products. As a high-level form of renewable resource utilization, remanufacturing is to develop a recycling economy and promote energy-saving emission reduction The conditions.

According to statistics, at present, global remanufacturing output value has exceeded US$100 billion, with 75% from the United States, of which automobile and construction machinery remanufacture accounts for more than two thirds. In foreign countries, remanufacturing has become an important component of circular economy after more than 30 years of development. Some. Remanufacturing not only saves production line investment, energy and raw material consumption, but also greatly prolongs the service life of the product. China is a large country in the manufacture and use of equipment, with equipment assets reaching several trillion yuan, and the maintenance of 14 major engineering machinery. 2.9 million units. As China enters the peak period of mechanical equipment scrapping, the remanufacturing industry shows unique advantages in terms of society, resources, and environmental benefits.

Academician Xu Binshi of the Chinese Academy of Engineering once stated that "China's remanufacturing industry already has favorable conditions such as market, technology and policies. Under the current domestic and international pressure to cope with energy shortages, the remanufacturing industry will become China's sunrise industry."