The Northwest Research Institute of Chemical Engineering has successfully developed a syngas production process technology using a four-channel nozzle for the co-gasification of kerosene

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The Northwest Institute of Chemical Engineering has successfully developed a process for producing syngas using a four-channel nozzle for the co-gasification of kerosene. Author/Source: Date: 2016-08-04; Clicks: 7. At 12:00 on July 30, 2016, the DCC heavy oil comprehensive utilization project of Shaanxi Yanchang Zhongmei Yulin Energy and Chemical Co., Ltd. completed its initial trial run successfully, with effective syngas being produced and fed into the methanol synthesis system. This marks the successful application of the process for producing syngas using a four-channel nozzle for the co-gasification of kerosene, a technique pioneered by the Northwest Institute of Chemical Engineering in China. In December 2015, in order to make efficient use of the pyrolysis heavy oil generated by the Yueneng Chemical’s catalytic cracking (DCC) unit, and in the absence of data on coal-free heavy oil gasification as well as any applicable operational experience, the research team conducted a large number of fundamental studies in the laboratory on the material properties and flow characteristics of the DCC pyrolysis heavy oil. Based on the research findings, taking into account the actual operating conditions of the DCC unit at Yulin Energy Chemical Industry, and drawing on the experience gained by our institute from the successful operation of the four-channel nozzle for organic waste liquids at Zhejiang Fengdeng Chemical Co., Ltd., the R&D team developed a technical solution for co-gasification of heavy oil and coal slurry through process simulation studies, control system analyses, and flow field simulations of the four-channel nozzle. After the plan was approved by Yulin Energy Chemical, the R&D team overcame numerous technical challenges in just 2 months, successfully developing a syngas production process using a four-channel nozzle for co-gasification of kerosene – a technology that is pioneering in China. On July 30, the DCC heavy oil comprehensive utilization unit of Yulin Energy Chemical successfully completed its first-time feed trial run. Data on 72 hours of stable operation show that with the syngas production process using a four-channel nozzle for co-gasification with kerosene, a single gasifier can gasify and pyrolyze 200 tons of heavy oil per day. The content of effective syngas (H2+CO) produced is around 84%, with values reaching up to 86%. Compared to the conventional water-coal slurry gasification technique, this approach results in an increase of 5 percentage points in the effective syngas (H2+CO) content, a reduction of over 7% in oxygen consumption, and an improvement of over 6% in energy efficiency. After the adoption of this technology, Yulin Energy Chemical’s existing gasification units can process over 100,000 tons of cracked heavy oil from the DCC unit each year, generating additional economic benefits of hundreds of millions of yuan for the company. The successful commissioning of this project not only marks the emergence of another significant coal chemical technology developed by our institute to support the group company’s strategy for the comprehensive utilization of oil, coal, and gas resources; it also serves as a model for the \"innovation-driven wing\" of the group company’s \"one core, two wings\" industrial structure, providing guidance for the energy and chemical industries. Furthermore, it opens up a new path for other energy and chemical enterprises in China to achieve the comprehensive utilization and advanced transformation of resources.