A Beiqi Weiwang 307 electric logistics vehicle is charging. There are three basic types of fixed bed reactor: (1) axial adiabatic fixed bed reactor. The fluid flows through the bed along the axial direction, and there is no heat exchange between the bed and the outside world. (2) radial adiabatic fixed bed reactor. The fluid flows through the bed along the radial direction. Centrifugal flow or centripetal flow can be adopted. There is no heat exchange between the bed and the outside world. Compared with axial reactor, radial reactor has shorter flow distance, larger cross-sectional area and smaller fluid pressure drop. But the structure of radial reactor is more complicated than that of axial reactor. The above two forms are adiabatic reactors, suitable for the reaction heat effect is not large, or the reaction system can withstand adiabatic conditions caused by the reaction heat effect of the temperature changes. (3) The tubular fixed-bed reactor is composed of multiple reaction tubes in parallel. The catalyst is arranged in the tube or between the tubes, and the heat carrier flows through the tubes or tubes for heating or cooling. The diameter of the tubes is usually between 25 ~ 50mm, and the number of tubes can be as many as tens of thousands of roots. The tubular fixed bed reactor is suitable for the reaction with high thermal effect. In addition, there is a reactor composed of the above basic forms in series, called a multistage fixed bed reactor. Desulfurizer,filter,Reaction kettle,Reactor YANTAI DONGTAI STANDER OFFSHORE ENGINEERING CO.,LTD , https://www.dongtaicolumbus.com
Electric cars are not unusual, electric logistics vehicles also began to run on the road in Beijing, and gradually replace the more contaminated diesel logistics vehicles. The reporter learned yesterday that SF, EMS, Baidu Takeaway, Jingdong and other companies began to try to use zero-emission electric logistics vehicles, at least more than 200 vehicles have been on the road. These electric wagons centered on the layout of large-scale logistics centers and bazaars are mainly used for short-distance and high-frequency distribution in the city. If large-scale promotion is implemented, the impact of Beijing’s motor vehicle emissions on air quality will be effectively suppressed.
　　
7200 liters of diesel per vehicle per year Province <br> <br> addition to private passenger car leasing, BAIC New Energy's Green Dog Car launch electric car rental logistics from the beginning of this year, there has been way off the United States, and some other fast Shun Logistics The company delivered more than 200 logistics vehicles, mainly for intra-city distribution.
These electric logistics vehicles are not only environmentally friendly and non-polluting, but also can greatly reduce the logistics costs of companies. The reporter calculated an account, diesel fuel consumed 1 kilometer equivalent to 7 cents of fuel, electric car 1 kilometer consumes only 3 cents; usually logistics delivery car runs 5000 kilometers in 1 month, 1 kilometer saves 4 cents, 1 month It will save 2,000 yuan. From an environmental point of view, the electric logistics vehicle consumes 12 liters of diesel per 100 kilometers and emits 30 kilograms of carbon dioxide. In one year, each electric logistics vehicle can save 7,200 liters of diesel and reduce CO2 emissions by 18,000 kilograms.
Electric logistics vehicles can also be leased and operated to reduce corporate cash investment. The rents for short-term and long-term rentals are 100 yuan for daily rent, 600 yuan for weekly rent, 2,400 yuan for monthly rent, and 25,000 yuan for annual rent.
Meanwhile Timeshare Rentals <br> <br> network is building a car more than time-sharing, pay-on-demand, long the electric car leased to logistics companies, logistics vehicles Timeshare Rentals electric outlets are also being rolled out Beijing.
At present, Green Dog Car Rental has put more than 20 electric logistics vehicles at its network outlets such as Jimei Home Plaza for time-share leasing to solve customers' temporary car problems.
It is understood that the time-sharing leasing network of electric logistics vehicles is in the test phase, and the rental price includes electricity, service, parking and other expenses.
Yet to get electric cars on the road three sources offer <br> <br> city center motor vehicle pollution is buses, taxis, logistics vehicles, buses and taxis are currently trying to adopt new energy and clean energy vehicles for substitution, Only the development of logistics vehicles has been lagging behind. There is a large number of diesel logistics vehicles delivering goods in the city every day, which brings more serious air pollution.
“The electric vehicle is still a new thing, and the cruising range and charging problems are a little worrying. The cost is reduced, and the convenience is not enough. The current management and control of the electric vehicle is based on the standard of gasoline vehicles. As of 11 o'clock in the evening, it is not possible to enter the Fourth Ring Road." A logistics vehicle driver admitted to reporters that he was concerned when choosing an electric logistics vehicle.
Unlike electric cars, electric logistics vehicles have not yet enjoyed the right-of-way discount for electric vehicles.
“I hope to cancel some of the restrictions on new energy logistics vehicles and give them the same 'privilege' as new energy passenger vehicles, so that we can quickly promote and make more contribution to the capital’s blue sky,†said Song Xiaoguang, Green Dog Car Rental Account Manager.