Location History:
- Daqing, CN (2014)
- Heilongjiang, CN (2016)
Company Filing History:
2 out of 2 
1 out of 1 
1 out of 2 Years Active: 2014-2016
Title: Longwu Cheng: Pioneer in Separating Pyrolysis Gas for Lower Carbon Olefins
Introduction
Longwu Cheng, hailing from Heilongjiang, China, is an innovative inventor known for his contributions to the field of chemical engineering. With a total of two patents to his name, Cheng has developed advanced processes for the separation of pyrolysis gas, specifically aimed at enhancing the production of lower carbon olefins.
Latest Patents
Cheng's latest patents include groundbreaking methodologies focused on optimizing the separation processes involved in producing olefins. His first patent, "Process for separating by absorption the pyrolysis gas from preparation of lower carbon olefins," introduces a novel approach that employs primary and secondary absorbents in a demethanizer. By utilizing countercurrent contact at moderate temperatures and pressures, the process efficiently separates hydrogen and methane from heavier fractions.
The second patent, "Method for preparing polymer grade low-carbon olefin through separation of methanol pyrolysis gas," outlines a detailed method consisting of compression, impurity removal, absorption, and separation. This invention emphasizes a moderate-temperature, moderate-pressure separation technique that eliminates the need for cold boxes, resulting in safer operations, lower energy consumption, and reduced equipment investment.
Career Highlights
Cheng has made significant strides in his career while collaborating with reputable organizations, notably Daqing Petrochemical Engineering Co., Ltd. and China MTO Limited. Throughout his tenure at these companies, he has focused on advancing chemical engineering processes, making noteworthy contributions to the production of olefins.
Collaborations
His work has been enriched through collaborations with esteemed colleagues such as Huiling Zhang and Zhiyuan Song. Together, they have pushed the boundaries of innovation in chemical processes, fostering an environment of creativity and research excellence.
Conclusion
Longwu Cheng stands as a distinguished inventor whose work in the separation of pyrolysis gas continues to influence the production of lower carbon olefins. His patents reflect a commitment to innovation and efficiency within the chemical engineering industry, paving the way for safer and more sustainable manufacturing practices.