Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A biodiesel, palm oil technology, applied in biofuel, fat oil/fat refining, petroleum industry, etc., can solve the problems of easily causing side reactions, increasing reaction costs, prolonging reaction time, etc. The effect of reducing the amount and high catalytic activity
Inactive Publication Date: 2011-08-10
郑德华
View PDF4 Cites 8 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, because the esterification reaction is a reversible reaction, the low-carbon alcohol consumed in the reaction and the moisture generated by the reaction are not conducive to the positive movement of the reaction to produce biodiesel. Therefore, it is necessary to increase the amount of low-carbon alcohol to promote the forward reaction. Reaction cost, extended reaction time and increased energy consumption
Moreover, in the process of using liquid alkaline catalyst to produce biodiesel, the liquid alkaline catalyst is sensitive to moisture, and the activity will decrease when it meets water, and it is easy to cause side reactions
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
[0029] In the present invention, the preparation of biodiesel from palm oil takes solid alkali as the catalyst, and the present embodiment uses the loaded K 2 CO 3 / Al 2 o 3 It is a solid base catalyst.
[0030] load type K 2 CO 3 / Al 2 o 3 The preparation process of the solid base catalyst is as follows: select diameter 3-4mmΨ-Al 2 o 3 particles as carriers, K 2 CO 3 / Al 2 o 3 The load ratio of the two is 2:10, weigh 2g K 2 CO 3 Put it into a 250ml beaker, add 10ml of water to dissolve, then add 10gΨ-Al 2 o 3 , add water until the liquid surface covers Al 2 o 3 For the carrier, add 10ml of water, then place the beaker in a shaker to oscillate and impregnate for 300min, filter and dry the solid at 105°C, and then roast it at 600°C for 2h to obtain the supported K 2 CO 3 / Al 2 o 3 Solid base catalyst, spare.
[0031] The present invention uses sulfonated polyacrylamide as the acid-resistant water-absorbing agent, which takes acrylamide (AM) as the unit, K ...
Embodiment 2
[0056] In this example, Cs 2 O / Al 2 o 3 It is a solid base catalyst, and its preparation process is the same as in Example 1.
[0057] The preparation process of acid-resistant water-absorbing agent sulfonated polyacrylamide is as follows:
[0058] (1) Synthesis of cross-linked polyacrylamide
[0059] Add 10% acrylamide aqueous solution into the 1000ml four-necked bottle, feed N 2 , add acrylamide aqueous solution 5% crosslinking agent N, N-methylenebisacrylamide, heat up to 64 ° C, add acrylamide aqueous solution 5% initiator K 2 S 2 o 8 , reacted for 1 hour, and discharged the product. The product was dried at 110° C. to constant weight and dehydrated. The product was dried and finely ground to obtain cross-linked polyacrylamide.
[0060] (2) Sulfonation of cross-linked polyacrylamide
[0061] Add cross-linked polyacrylamide in a 1000ml four-necked bottle, add 5% sodium bisulfite and formaldehyde solution of cross-linked polyacrylamide, then add initiator and cross-l...
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
Property
Measurement
Unit
water absorption
aaaaa
aaaaa
water absorption
aaaaa
aaaaa
water sorption capacity
aaaaa
aaaaa
Login to view more
Abstract
The invention provides a method for preparing biodiesel by using palm oil, which comprises: (1) pretreatment; (2) pre-esterification; (3) ester exchange reaction; and (4) coarse diesel decolorization. In the pre-esterification, standard raw material oil, methanol and sulfuric acid serving as a catalyst to form a mixed material, then sulfonated polyacrylamide in an amount which is 0.1 to 0.3 percent based on the mass of the standard raw material oil is added for continuous reaction to reduce an acid value, the reaction is finished after lasting for 1 to 2 hours, the reaction mixture is settled and demixed into a solid phase, a water phase and grease, the grease is subjected to ester exchange reaction to form coarse diesel, and finished biodiesel is obtained by decolorization. In the invention, a non-uniform phase reaction mode with a solid alkali as a catalyst is adopted, the catalytic activity of the catalyst is high, side reactions are fewer, separation is easy, corrosion to equipment is reduced, repeated use can be realized, and the amount of produced pollutants is reduced greatly; and an acid resistant water absorber can remove water generated in reaction in time in the pre-esterification process to make the reaction to perform toward a positive direction constantly, the reaction time is reduced effectively, energy consumption is lowered and the consumption of methanol is reduced.
Description
technical field [0001] The invention belongs to the field of biodiesel preparation, in particular to a method for producing biodiesel from palm oil. Background technique [0002] Biodiesel has excellent combustion performance, its viscosity and combustion heat index can reach the standard of ordinary diesel oil, and as a clean renewable green energy, it has excellent environmental protection, good safety (flash point high) and reproducibility are getting more and more attention. [0003] 75% of the cost of biodiesel is determined by raw materials, so whether biodiesel is economically feasible or not mainly depends on the choice of raw materials, not only requires sufficient sources of raw materials, but also requires low prices to have economic competitiveness. my country has a vast territory and rich varieties of oil resources, and palm oil is one of the oil crops with the highest yield per unit area. Due to the development of instant noodles and other fried foods, its pla...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more