Refining method for vaseline hydrogenation
A technology of hydrofining and vaseline, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment. It can solve problems such as harsh reaction conditions, increased equipment investment and operating costs, and poor quality of vaseline raw materials, so as to achieve an optimized process. process, strong adaptability, and the effect of reducing equipment investment and operating costs
Active Publication Date: 2012-08-29
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
As the quality of crude oil worldwide deteriorates, the quality of petroleum jelly raw materials also deteriorates. Hydrofining of petroleum jelly requires more stringent reaction conditions, resulting in a significant increase in equipment investment and operating costs.
Method used
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Experimental program
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Embodiment Construction
[0016] The main content of the method of the present invention is to use two-stage medium-pressure hydrogenation technology to produce vaseline. First, the raw material enters the first reactor under conditions suitable for reactions such as desulfurization and denitrogenation, and the first reactor uses a sulfided hydrogenation refining catalyst. , mainly for desulfurization, denitrogenation, deoxygenation and partial aromatics saturation reactions; the product of the first reactor undergoes gas-liquid separation, and the liquid phase and hydrogen that basically does not contain hydrogen sulfide enter the second reactor, which uses reduced nickel catalyst , Carry out reactions such as aromatic hydrocarbon saturation under conditions suitable for aromatic hydrocarbon saturation. The reaction product in the second reactor is subjected to gas-liquid separation and deodorization to obtain vaseline product.
[0017] The effects of the present invention are specifically described b...
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The invention discloses a Vaseline hydrogen refining method, comprising that Vaseline raw material and hydrogen firstly enter a first reactor and contact with cured hydrogen refining catalyst for desulfuration, denitrification, deoxidation and partial aromatics saturation; gas-liquid separation is carried out on the reaction product in the first reactor, the liquid phase and the hydrogen enter a second reactor which adopts a reduction type nickel catalyst for aromatics saturation, and the gas-liquid separation and smell elimination are carried out on the reaction product in the second reactor, thus obtaining the Vaseline product; wherein the first reactor and the second reactor adopt middle-pressure operation condition. The method of the invention can produce high-quality Vaseline products used for drug and cosmetic under middle pressure, equipment investment and operation expense are low, meanwhile the adaptability of the raw material is wide and the production is flexible.
Description
technical field [0001] The invention relates to a method for producing petrolatum, in particular to a method for producing high-quality petrolatum for medicine or cosmetics by hydrogenation. Background technique [0002] The production process of petroleum jelly is mainly composed of two parts: the blending of raw materials and the refining of blends. Since the raw materials of petroleum jelly contain more non-ideal components such as condensed ring aromatics and sulfur, nitrogen, and oxygen heterocyclic compounds, they must be refined in depth Remove it. Vaseline used in pharmaceuticals and cosmetics must be harmless to the human body. Therefore, refining is a key step in the production of petroleum jelly. [0003] The production of petrolatum by hydrogenation is an effective method for producing petrolatum. The method can effectively remove sulfur, nitrogen and oxygen heterocyclic compounds in the petroleum jelly raw material, and convert aromatic hydrocarbons in the pe...
Claims
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IPC IPC(8): C10G65/08
Inventor 王士新刘平蔡立袁平飞李殿昭
Owner CHINA PETROLEUM & CHEM CORP