1. A feeding device configured to feed a carrier tape, comprising:
a transmission mechanism;
a buffering mechanism having
a slide assembly;
a feeder assembly slidably mounted to, and movable by, the slide assembly; and
an inductor mounted to the slide assembly;
wherein, the carrier tape is received by the transmission mechanism and fed into the feeder assembly;
wherein, the inductor controls the speed of the transmission mechanism.
2. The feeding device as claimed in claim 1, wherein:
the feeding device further comprises a bracket and a fastening mechanism; and
the fastening mechanism and the buffering mechanism are arranged to either side of the bracket, and the transmission mechanism is arranged between the fastening mechanism and the buffering mechanism.
3. The feeding device as claimed in claim 2, wherein:
the bracket comprises a first column, a second column, a third column, a fourth column, and an electronic control box;
the fastening mechanism is mounted to the first column, the transmission mechanism is mounted to the second column, and the buffering mechanism is mounted to the third column; and
the electronic control box is electrically connected to the transmission mechanism and the buffering mechanism.
4. The feeding device as claimed in claim 3, wherein:
the fastening mechanism comprises a roller, a slide assembly, a rope; a weight member, a slide block, and a pressing wheel; and
the fastening mechanism is configured to press the carrier tape and transfer the carrier tape to the transmission mechanism.
5. The feeding device as claimed in claim 4, wherein:
the roller is mounted to one side of the first column;
the slide assembly is mounted to the first column under the roller;
the rope revolves the roller;
the weight member is connected to one end of the rope;
the slide block is mounted to the slide assembly, and is connected to the other end of the rope; and
the pressing wheel is mounted to the slide block.
6. The feeding device as claimed in claim 3, wherein:
the transmission mechanism comprises a driver, a driving shaft, and a driving wheel;
the driver is mounted to the second column; and
one end of the driving shaft is connected to the driver, and the other end of the driving shaft passes through the driving wheel.
7. The feeding device as claimed in claim 6, wherein:
the electronic control box slows the feeder assembly down to reduce a transferring speed of the carrier tape when the feeder assembly is moved away from the inductor; and
the electronic control box speeds the feeder assembly up to increase a transferring speed of the carrier tape when the feeder assembly is moved toward the inductor.
8. The feeding device as claimed in claim 6, wherein the transmission mechanism further comprises a feeding wheel; and the feeding wheel is mounted under the driver to receive the carrier tape transferred by the driver.
9. The feeding device as claimed in claim 8, wherein the feeding device further comprises a saving assembly, the saving assembly is mounted adjacent to the feeding wheel under the feeder assembly.
10. The feeding device as claimed in claim 9, wherein the saving assembly comprises a plurality of saving wheels, the saving wheels are configured to receive the carrier tape from the feeding wheel and transfer the carrier tape to the feeder assembly.
11. The feeding device as claimed in claim 10, wherein the slid assembly comprises a gear, a guide rail, a connecting rope, a weight member, and a slide block.
12. The feeding device as claimed in claim 11, wherein:
the gear is mounted to one end of the third column;
the guide rail is mounted to the third column under the gear;
the connecting rope revolves the gear; and
the slide block is connected to one end of the connecting rope, and mounted to the guide rail.
13. The feeding device as claimed in claim 11, wherein the feeder assembly is mounted above the saving assembly, and comprises a plurality of feeding wheels, the feeding wheels receives the carrier tape from the saving wheels.
14. The feeding device as claimed in claim 3, wherein the feeding device further comprises a discharging mechanism, the discharging mechanism is mounted to the fourth column.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A process for the production of at least one ester of fatty acid and glycerin with a high degree of purity, comprising reacting a vegetable or animal oil with an aliphatic monoalcohol containing 1 to 18 carbon atoms, in the presence of at least one catalyst selected from the group consisting of:
a combination of zinc and titanium oxides,
a combination of zinc oxide, titanium oxide and alumina,
a combination of bismuth and titanium oxides, and
a combination of bismuth oxide, titanium oxide and alumina.
2. A process according to claim 1, wherein said aliphatic monoalcohol contains 1 to 12 carbon atoms.
3. A process according to claim 1, wherein said aliphatic monoalcohol contains 1 to 5 carbon atoms.
4. A process according to claim 1, conducted at a temperature of between 150\xb0 C. and 250\xb0 C., under a pressure of less than 100 bar and with excess monoalcohol relative to the oilalcohol stoichiometry.
5. A process according to claim 1, wherein said catalyst is in the form of powder, extrudates or balls.
6. A process according to claim 1, wherein the catalyst has a surface area of 10 to 500 m2g, a pore volume of 0.1 to 1.2 cm3g, and a pore distribution of 0.01 to 0.1 micrometer.
7. A process according to claim 6, wherein the catalyst has a surface area of 30 to 400 m2g and a pore volume of more than 0.2 cm3g.
8. A process according to claim 1, wherein said reacting is conducted intermittently.
9. A process according to claim 1, wherein said reacting is conducted continuously, either in a fixed bed, or with autoclaves and decanters in series.
10. A process according to claim 9, wherein said reacting is conducted in a fixed bed, with a VVH of 0.1 to 3, preferably 0.3 to 2.
11. A process according to claim 1 comprising conducting successively:
an initial transesterification with a conversion of the oil into ester of at least 80-85%;
a first evaporation of excess monoalcohol;
decanting of the glycerin and ester, and recycling said ester into a second stage to undergo a transesterification with a portion of the monoalcohol recovered in the first evaporation;
a second evaporation of the monoalcohol, decanting under cold conditions and separating the glycerin and the ester.
12. A process according to claim 1, wherein the initial oil is an acidic oil, and a preliminary glycerolysis of the free fatty acid with a transesterification catalyst, at a temperature of between 180 and 220\xb0 C., and at a pressure equal to or less than 1 bar.
13. A process according to claim 1, wherein the ester that is obtained is purified by passage over a resin, an earth andor activated carbon.
14. A process according to claim 1, wherein the ester that is obtained is purified either by distillation or by washing with methanolic glycerin to reduce its monoglyceride content.
15. A process according to claim 11, wherein the glycerin that is obtained after the alcohol is evaporated is ultimately purified by passage over a resin, an earth andor activated carbon.
16. A process according to claim 1, wherein to produce an ethyl ester, ethyl alcohol is used in a mixture with a proportion of 1 to 50% methanol.
17. A process according to claim 1, wherein the catalyst corresponds to the formula:
(ZnO)a\u2014(TiO2)byAl2O31\u2212y,
or
ZnaTibO(a+2b)yAl2O31\u2212y,
wherein a has a value of 0.5 to 5, b has a value of 0.5 to 5, and y has a value of 0.005 to 1.
18. A process according to claim 17, wherein in the formula:
(ZnO)a\u2014(TiO2)byAl2O31\u2212y
or in the formula:
ZnaTibO(a+2b)yAl2O31\u2212y,
y has a value of 0.005 to 0.995.
19. A process according to claim 1, wherein the catalyst corresponds to the formula:
(Bi2O3)a\u2014(TiO2)byAl2O31\u2212y,
wherein a has a value of 0.5 to 5, b has a value of 0.5 to 5, and y has a value of 0.005 to 1.
20. A process according to claim 19, wherein in the formula:
(Bi2O3)a\u2014(TiO2)byAl2O31\u2212y,
y has a value of 0.005 to 0.995.