Process for preparing fatty alcohol by hydrogenation purification of trickle bed reactor
A technology of fatty alcohol and reactor, which is applied in the field of hydrogenation and purification of fatty alcohol by trickle bed reactor, can solve the problems of unsatisfactory and high carbonyl value of finished fatty alcohol, and achieve the effect of prolonging the overall life and reducing production cost
Pending Publication Date: 2022-07-12
江苏盛泰化学科技有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage is that the carbonyl value of the finished fatty alcohol is high, which cannot meet the needs of some users
Method used
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Embodiment 1
[0034] Using copper-zinc catalyst, the pressure is 16Mpa, the temperature is 170℃, and the hydrogen supplement is 10Nm per hour 3 , circulating hydrogen 600-1000Nm 3 Under the circumstance, the feed rate is 4 tons / h, and the carbonyl value of fatty alcohol can be reduced from 500-1000PPM to 30-100PPM in one decarbonylation.
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Abstract
The invention belongs to the technical field of catalytic hydrogenation, and particularly relates to a process for preparing fatty alcohol through hydrogenation purification by using a trickle bed reactor, which comprises the following steps: mixing a fatty alcohol raw material with hydrogen, entering the trickle bed reactor from a top feed port, sequentially passing through a primary distributor and a redistributor, entering an upper catalyst bed layer and a main catalyst bed layer, and entering a lower catalyst bed layer through a secondary distributor; the fatty alcohol hydrogenation purification reaction is carried out, the purified fatty alcohol is collected in a bottom collection area, the liquid level height is accurately adjusted and controlled through the remote liquid level, and then the purified fatty alcohol is discharged out from a discharge port in the bottom of the reactor through system pressure. In the process for preparing fatty alcohol by hydrogenation purification of the trickle bed reactor, the reactor has the integrated functions of catalytic reaction, gas-liquid separation, temporary storage and the like.
Description
technical field [0001] The invention belongs to the technical field of catalytic hydrogenation, and in particular relates to a process for preparing fatty alcohol by utilizing a trickle bed reactor for hydrogenation purification. Background technique [0002] Fatty alcohols, sometimes referred to as higher alcohols, are monohydric aliphatic alcohols containing 6 or more carbon atoms, either derived from natural sources or synthesized from petroleum feedstocks. Fatty alcohols are widely used in chemical industry, light industry, agriculture and food industry due to their advantages of good biodegradability, good compoundability, high solubility and good low temperature resistance. For example, in the chemical industry, it can be used as a solvent and stabilizer in paints, vitamins, and cosmetics; in agriculture, it can be used as a plant production accelerator, seed germination insulation film, etc.; in the food industry, it can be used for food coating film preservation, etc...
Claims
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IPC IPC(8): B01J8/04C07C29/90C07C31/125
CPCB01J8/0446C07C29/90C07C31/125Y02P30/20
Inventor 郑文静
Owner 江苏盛泰化学科技有限公司