·Beijing Municipal Environmental Protection Bureau: 46,000 taxis to replace the three-way catalytic converter during the year

Recently, it was learned from the Municipal Environmental Protection Bureau that since last month, the city has started a taxi replacement of the three-way catalytic converter. It plans to replace 46,000 vehicles before the end of the year, which can reduce the emission of nitrogen oxides and volatile organic compounds by about 2,000 tons. As of yesterday, the city's 16 replacement outlets have completed the replacement of taxis three-way catalytic converters about 22,000.

Last weekend, the North China Environmental Protection Supervision Center dispatched an inspection team to conduct special inspections on the heavy-duty weather emergency response of several administrative districts in Beijing. The results show that the pollution of motor vehicles is more serious. The over-standard rate of vehicles with a vehicle age of more than 10 years is higher, and the over-standard rate of taxis with a mileage of more than 300,000 kilometers reaches 80% to 90%.

It is understood that the national motor vehicle emission standards stipulate that the three-way catalytic converter has a shelf life of 160,000 kilometers. In other words, after the gasoline car is driving 160,000 kilometers, the pollutant emissions will gradually increase. Experimental tests have shown that taxis that have been in use for more than two years can emit nitrogen oxides and volatile organic compounds more than five times and twice as much as emissions. The average pollutant emitted by a taxi that has been used for more than two years is equivalent to one year's emissions of 30 non-operating vehicles. Therefore, regular replacement of taxi three-way catalytic converter is an important measure to reduce vehicle emissions.

The relevant person in charge of the Municipal Environmental Protection Bureau revealed that since September 9, the city has fully started the work of replacing the three-way catalytic converter with a taxi. As of yesterday, the city has completed the replacement of taxis three-way catalytic converters about 22,000. It is planned to replace 46,000 vehicles before the end of the year. In fact, the three-way catalytic converter is an off-board purification device installed in the exhaust system of an automobile, which converts carbon monoxide, hydrocarbons and nitrogen oxides discharged from automobile exhaust into carbon dioxide, water and oxidation by oxidation and reduction. Nitrogen gas purifies the car's exhaust.

In order to ensure the smooth implementation of the replacement work, the transportation, environmental protection, public security, quality supervision and other departments have formulated specific implementation organization plans and detailed the implementation plan. More than 40,000 vehicles to be replaced with three-way catalytic converters will be assigned to each of the operating units, each driver, each vehicle, and each of the 16 replacement outlets and 98 three-way catalytic replacement special stations. Hours, each outlet. (Reporter Wang Bin)

The machine is used for punching connecting holes at both ends of the scaffold vertical pole, it can punch four holes at one time, and it can also ensure the accuracy of the hole position.