Chinese Academy of Sciences

Petrochina Company Limited

Beijing Jiaotong University

Sichuan Shengnuo Oil. and Gas Engineering Technology Service Co., Ltd

Jun Xie

Xu Liang Li

Jian Yang

Xiaodong Liu

Wenqing Xu

Tingyu Zhu

Yunfei Zhang

Kui Li

Chaoqun Li

Huiyun Ma

Yuan Jiang

Chenggang Yu

Yanan Liang

Dezheng Yi

Yanyan Liu

Haifeng Zhong

Mingqiang Yang

Zhihao Zhou

Zike Wei

Fukang Zhao

Yixi Wang

Yukun Fu

Qiang Yin

The present application discloses a pellet flue gas circulation and waste heat utilization process and a system thereof, which relates to the technical field of flue gas treatment. The system includes a grate, a rotary kiln, an annular cooler, and ducts connecting each part. On the basis of not changing the existing process a flue gas circulation unit and intelligent control equipment are arranged additionally in the present application. The process is simple, and not only can ensure the parameter stability of the production system such as temperature, gas flow or gas pressure, but also can make full use of the low and medium temperature flue gas components and the waste heat, so as to achieve net zero waste gas discharging, energy saving and emission reduction.

Pellet flue gas circulation and waste heat utilization process and system thereof

A method for constructing a multistage network includes: deploying a plurality of nodes; constructing the upper network with at least one node of the plurality of nodes; and in response to determining there is an isolated node, determining an intermediate node for the isolated node and adding the isolated node into the upper network or one of the at least one sub-network according to the intermediate node.

Method for constructing multistage network, related method and device

A downhole throttling device based on wireless control includes an inlet nozzle, a throttling assembly, an electrical sealing cylinder, a gas guide cylinder, a lower adapter sleeve, an end socket, a female sleeve, and electrical components. The inlet nozzle is connected to the throttling assembly, the throttling assembly is connected to the electrical sealing cylinder and the gas guide cylinder, the electrical sealing cylinder and the gas guide cylinder are both connected to the lower adapter sleeve, the lower adapter sleeve is respectively connected to the end socket and the female sleeve, and the electrical components are arranged in the electrical sealing cylinder. A throttling effect is achieved by detecting the temperature and pressure in a tube by a temperature/pressure sensor in the electrical components and controlling a motor to rotate a movable valve in the throttling assembly by a circuit control assembly, thereby achieving wireless control over downhole throttling.

Downhole throttling device based on wireless control

Growing community of inventors

Beijing, China

Jun Xie