A cyclohexanone production waste x oil waste alcohol mixing hydrogenation device and method

Abstract

The invention provides a mixing and hydrogenation device and method for cyclohexanone production waste X oil and waste ethanol. The device is successively connected with a gasification superheater, reactors and a gas-liquid separator, wherein the reactors are filled with catalysts. The method comprises the following steps: mixing the waste ethanol and deionized water into the cyclohexanone production waste X oil before the X oil enters a reaction device, enabling a mixed raw material of the oil, the ethanol and the water to pass through a preheater, then successively introducing the mixed rawmaterial into the reactors with a small amount of hydrogen for cracking and hydrogenating to obtain hydrogenated oil, and finally enabling the product to enter a separation tank for carrying out gas-liquid separation. The device and the method have the beneficial effects that through combining the steps of mixing the oil with the ethanol, cracking, hydrogenating in series and selecting the catalysts, the activity of the hydrogen atom obtained by cracking of the ethanol and the water is fully used and directly participates in the hydrogenation reaction; the yield of the liquid phase material isobviously increased; the activity of the hydrogen and the reaction conversion rate are improved; the consumption of the hydrogen is reduced; the cyclohexanone production waste X oil and the waste ethanol are converted into fuel; the sewage emission of the enterprise is reduced; the production benefit is increased; the green, economical and environment-friendly purpose is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment and technology, and in particular relates to a device and method for mixing and hydrogenating cyclohexanone production waste X oil and waste alcohol. Background technique [0002] Domestic cyclohexanone is mainly used to produce caprolactam. At present, the total production capacity of caprolactam in my country is about 3 million tons per year, of which the production capacity of cyclohexanone is about 2.6 million tons per year, and the hazardous waste generated is about 90,000-100,000 tons / year, it is estimated that the capacity of domestic caprolactam plant will reach 4 million tons / year in the next 5 years. In the process of cyclohexane oxidation to cyclohexanone and cyclohexanol, there is a by-product called X oil, and its discharge volume accounts for about 5%-8% of the output of cyclohexanone belongs to hazardous waste. With the development of my country's nylon chemical fiber i...

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Problems solved by technology

In addition, in the hydrogenation process of cyclohexanone production waste X oil, the low degree of participation of hydrogen in the reaction process greatly increases the number of cycles in the reaction process, and the energy consumption of the process also occupies a considerable part of the cost. The high-pressure reaction device is also processing materials Increased investment in equipment and supporting facilities, cyclohexanone production waste X oil also contains a large amount of harmful substances such as sulfur and carbon deposits, which affect the product distribution and product properties in the catalytic cracking process, and must be effectively removed

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