Method for conveying material in a pneumatic material conveying system, and pneumatic material conveying system

A method for conveying material in a pneumatic material conveying system that comprises at least one material input point, a material conveying pipe connectable into medium communication with a feed-in container of the input point, at least one partial-vacuum generator configured to provide at least one of a pressure difference and transport air flow in the material conveying pipe at least for the time of transport of the material, the material conveying system further comprising at least one separator device, wherein the transported material is separated from the transport air at an outlet end of the material conveying system, the method comprising:

• conveying, the material in a first stage from the input point to a conveying pipe into at least one container space of an intermediate container arranged between the input point and the separator device via at least one of a suction/pressure difference and a transport air flow provided by the at least one partial-vacuum generator in a first time period, and
• conveying, in a second stage, the material via at least one of suction/pressure difference and transport air flow provided by the at least one partial-vacuum generator to the separator device in a second time period,
• wherein in the first stage, the material is conveyed in a conveying pipe section located in the material conveying direction between the input point and the intermediate container, the conveying pipe section having a first nominal diameter,
• wherein from the intermediate container, the material is conveyed in a second conveying pipe section to the separator device, the second conveying pipe section having a second nominal diameter, and
• wherein the first nominal diameter of the conveying pipe section is larger than the second nominal diameter of the second conveying pipe section between the intermediate container and the separator device.