Technology and system for preparing vulcanizing agent by using sweetening waste of lye regenerated byproducts

A technology for removing thiols and vulcanizing agents, applied in the preparation of organic compounds, catalyst activation/preparation, catalysts for physical/chemical processes, etc., can solve problems such as environmental pollution, save the vacuum system, simplify the production process, and avoid decomposition. Effect
CN102964281AActive Publication Date: 2013-03-13CHINA PETROLEUM & CHEM CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2013-03-13

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Abstract

The invention discloses a technology for preparing a vulcanizing agent by using a sweetening waste of lye regenerated byproducts. The sweetening waste of the lye regenerated byproducts is continuously sent into a rectifying tower through a charging pump for fractionation. Non-metallic compounds in the waste are heated and evaporated into steam which rises to a tower top as an overhead fraction; the overhead fraction enters a top condenser and is condensed into liquid which then enters a reflux tank; a part of the liquid in the reflux tank is sent into a product tank and used as the finished vulcanizing agent; and the other part of the liquid in the reflux tank, as a reflux liquid, is sent back to the rectifying tower by a reflux pump to join the waste liquid entering the tower for further fractionation, until the sweetening waste of the lye regenerated byproducts of a same batch is completely processed. The technology has advantages of suitably controlled fractionation condition and high yield of the vulcanizing agent.
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Description

technical field

[0001] The invention relates to a process for preparing a vulcanizing agent, in particular to a process for preparing a vulcanizing agent by using sweetening waste liquid regenerated by alkali liquor. The invention also relates to a system suitable for the above-mentioned process. Background technique

[0002] The liquefied petroleum gas produced by the refinery needs to be sweetened before leaving the factory. The treatment method is to contact the liquefied petroleum gas with lye. The mercaptan in the liquefied gas reacts with the NaOH in the lye to form sodium mercaptide, which is dissolved in the lye to realize the removal of mercaptan in the liquefied gas. In the early sweetening process, when the lye After the NaOH in the lye is completely consumed, the lye is sent to the waste water treatment plant for treatment, resulting in a high cost of waste water treatment. In recent years, Ningbo Zhongyi Company has developed oxygen-enriched oxidative regenera...

Claims

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