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橡胶噻唑类助剂副产物利用难题告破
Zhong Guo Hua Gong Bao· 2025-05-07 02:17
同时,该工艺还解决了现有技术中存在的安全、环境风险与水资源浪费问题,帮助企业降本增效。据 悉,橡胶助剂在生产过程中会因有机合成反应而产生大量副产物,其中又以MBT生产中的副产物和 CBS/TBBS生产过程中的副产物最具代表性。传统高温蒸馏法通过高温蒸馏的方式从MBT副产物中回收 苯并噻唑,但仅能回收20%左右的苯并噻唑并产生80%左右的残渣,而处理残渣又增加了生产成本。同 时,高温蒸馏还会产生剧毒硫化氢气体,存在安全风险和环境风险。另外还有一种加水共沸技术,通过 将MBT副产物加水共沸,进而实现苯并噻唑的回收。该方法虽然安全,但用水量巨大,吨耗水高达30 吨左右,成本较高的同时产生大量废水。 据介绍,新工艺在过资源化处理MBT及CBS/TBBS副产物的过程中,首先将副产物与溶剂混合固液分 离,所得固体经液碱溶解、二次分离获得硫黄和MBT钠盐溶液,经硫酸中和析出MBT产物。初次液相 产物与碳酸钠分层后,钠盐溶液同样通过中和获得MBT产品。有机相经蒸馏回收溶剂后,剩余物料分 离出硫黄和滤液,滤液精馏提纯苯并噻唑及含碳有机物,最终得到的产物硫黄、MBT、苯并噻唑均可 直接用于下游生产,实现副产物的全组分利用与溶剂循 ...
阳谷转债收盘上涨2.49%报140.0元/张,成交额5732.58万元,转股溢价率10.46%
Jin Rong Jie· 2025-05-06 07:16
Group 1 - The core viewpoint of the news is the performance and characteristics of Yanggu Convertible Bonds, which closed at 140.0 CNY per share with a trading volume of 57.3258 million CNY and a conversion premium rate of 10.46% [1] - Yanggu Convertible Bonds have a credit rating of "AA-" and a maturity period of 6 years, with a coupon rate that increases annually from 0.30% to 2.50% [1] - The conversion price for the bonds is set at 9.46 CNY, with the conversion period starting on February 2, 2024 [1] Group 2 - Shandong Yanggu Huatai Chemical Co., Ltd. is located in Yanggu County, Shandong Province, and specializes in rubber additives, which are essential raw materials in tire production [2] - The company was founded in 1994 and is a private joint-stock enterprise listed on the Shenzhen Stock Exchange since 2010, with an annual production capacity of 300,000 tons [2] - For the first quarter of 2025, Yanggu Huatai reported a revenue of 862.3 million CNY, a year-on-year increase of 3.4%, while net profit decreased by 22.95% to 62.581 million CNY [2] - As of April 2025, the company has a relatively dispersed shareholder structure with 30,620 shareholders and an average holding of 14.66 million CNY per person [2]