Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for production of alcohol

一种制造方法、工序的技术，应用在从油脂醇的制造领域，能够解决不能高收率、回收甘油、示不出经济上的优越性等问题

Active Publication Date: 2008-03-05
KAO CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this direct hydrogenation of glycerides, glycerol produced initially causes a side reaction of being hydrogenated on the surface of the catalyst, and glycerin cannot be recovered at a high yield, showing no economical advantage over the two-stage process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Before the fixed-bed reactor used in Step 2, install a tubular reactor (volume 0.003 m 3 ), in the tubular reactor, the raw oil and water are reacted to obtain reactants. The raw material oil and fat was supplied to the tubular reactor at a flow rate of 60 cc / hour and water at a flow rate of 50 times mole relative to 1 mole of the raw material oil and fat.

[0035]Step 2: A fixed-bed reactor filled with 300 cc of a commercially available shaped Co / Zr catalyst (manufactured by SUD-CHEMIECATALYSTS, G-67) activated at a hydrogen pressure of 5 MPa at a temperature of 250° C. for 0.5 hours was used in a tube with an inner diameter of 25 mm. . The reactant obtained in step 1 was supplied to a fixed bed reactor, and a catalytic hydrogenation reaction was carried out under the conditions of a pressure of 19.8 MPa, a catalyst layer temperature of 230° C., and 75 times the mole of hydrogen relative to 1 mole of raw material fats and oils.

[0036] Water was added to the...

Embodiment 2

[0040] Using the same tubular reactor and fixed bed reactor as in Example 1, except that the temperature of the catalyst layer in Step 2 was changed to 210° C., the same Steps 1 and 2 as in Example 1 were carried out. In the same manner as in Example 1, the reaction rate of the raw oil and fat at the outlet of the fixed-bed reactor, the aliphatic alcohol content in the oil phase, and the glycerin selectivity were analyzed. The results are shown in Table 1.

Embodiment 3

[0046] Step 1: In a rotary stirring autoclave with a volume of 500ml, add 180g of raw material oil and 20 times the mole of water relative to 1 mole of raw material oil. conditions for a 2-hour hydrolysis reaction.

[0047] After the reaction was over, the liquid in the autoclave was moved to a rotating and stirring detachable flask with a jacket set at 50° C., stirred for 1 hour at a stirring speed of 600 r / min, and left to stand for 24 hours. Separate the oily and aqueous phases.

[0048] Step 2: In a rotary stirring autoclave with a volume of 500 ml, 13.0 g of a commercially available Co / Zr catalyst subjected to the same activation treatment as in Example 1, 125.2 g of the oil component recovered in Step 1, and The glycerol skeleton in the oil component recovered in 1 is 83.7 times the mole of water (67.9g). After the temperature was raised to 230°C, the contact hydrogenation reaction was carried out for 5 hours under the conditions of a total pressure of 24.5MPa and a sti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a method for producing alcohol from fats and oils comprising the following steps 1 and 2: step 1: a step of reacting raw oil and fat with water to produce a reactant containing a glycerol skeleton; step 2: in the presence of a catalyst, the step 1 The reaction product obtained in the process of coexisting with water to carry out a hydrogenation reaction, wherein water is present in an amount of 0.5 times mol or more with respect to 1 mol of the glycerol skeleton contained in the reaction product.

Description

technical field [0001] The present invention relates to the manufacture method from fat alcohol. Background technique [0002] Conventionally, in industrial production of aliphatic alcohols, a method of producing aliphatic alcohols by transesterifying glycerol with methanol and subjecting fatty acid esters of the obtained methanol to catalytic hydrogenation has been used. Alternatively, a method of contact hydrogenating a fatty acid of a hydrolyzed glyceride and a wax ester obtained by esterifying an aliphatic alcohol is also used. These two-stage steps can obtain high-purity valuable glycerin in high yield, and thus are excellent in economical efficiency. [0003] On the other hand, the direct contact hydrogenation of glycerides can directly obtain aliphatic alcohols, which are industrially important products, from natural fats and oils, but they are rarely used in industrial production. In this direct hydrogenation of glycerides, initially produced glycerol causes a side...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/149C07C31/125C07C31/22C07C33/02C07B61/00
CPCC07C29/149C07C31/125C07C31/225
Inventor 坂本透难波正典巽信博
Owner KAO CORP