Shandong Kaisheng New Materials’ patent for “Method for preparing chloroacetyl chloride using reaction and distillation in a single tower, and integrated tower manufacturing apparatus”
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According to news from April 4, 2025, **information from the Intellectual Property Office shows that Shandong Kaisheng New Materials Co., Ltd. has filed a patent application titled “Method for preparing chloroacetyl chloride through reaction and distillation in a single tower, as well as an integrated tower apparatus for this purpose.” The publication number is CN 119751252 A, and the application was submitted in December 2024. The patent abstract indicates that this invention falls within the field of technologies for the preparation of chemical products, and specifically relates to a method for producing chloroacetyl chloride through reaction and distillation in a single tower, as well as an integrated tower assembly for this purpose. The method for preparing chloroacetyl chloride via reaction and distillation in a single tower as described in this invention comprises the following steps: Liquid chloroacetic acid is metered and preheated in a preheater; the raw material, thionyl chloride, is metered and vaporized in a vaporizer before entering the bottom of the reaction tower, where it reacts with chloroacetic acid coming from the upper part of the reaction tower. The bottom of the reaction tower is heated by a reboiler ； In the second step, the reaction steam from the reaction tower is cooled by the top condenser; the reflux liquid then returns to the top of the reaction tower for full reflux. After mass and heat transfer occur within the reaction tower, the vapor is extracted through a side line, and after being cooled by a side extraction condenser, pure chloroacetyl chloride is obtained as the final product. The method for preparing chloroacetyl chloride via reaction and distillation in a single tower as provided by the present invention is energy-efficient and reduces consumption; it ensures stable product quality and high purity ； The present invention also provides an integrated tower preparation device that requires minimal input and offers high efficiency.
Shandong Kaisheng New Materials Co., Ltd. was established in 2005 with a registered capital of 360.64 million RMB. It is a holding subsidiary of Huabang Life Health Co., Ltd., and it was listed on the NEEQ in 2016 (under the code 839711). The company is mainly engaged in the production and sales of products such as thionyl chloride, aramid polymerization monomers, p-nitrobenzoyl chloride, and polyetherketone ketone (PEKK). The company is a global leader in the production of thionyl chloride, as well as a leading enterprise in China’s aramid polymer monomer industry. It is also actively expanding its industrial chain by entering the field of new materials, establishing a hierarchical industrial structure that starts with basic chemical products such as chlorine and sulfur, progresses to fine chemical intermediates like thionyl chloride, then moves on to high-performance aramid polymer monomers such as isophthaloyl chloride and other aromatic acyl chlorides, and finally reaches high-performance polymer materials like polyetherketone ketone and related functional products.