KR200212700Y1 - Continuous system of producing polyolefin wax using horizontal thermal-cracking reactor - Google Patents

Abstract

The present invention can reduce the energy and manufacturing cost by continuously manufacturing a polyolefin wax using a horizontal pyrolysis reactor, and by improving its quality by adjusting the molecular weight distribution of the wax by mounting its own solvent input device It is to provide a device that can.

The subject innovation consists of the raw material conveying extruder 1, the horizontal pyrolysis reactor 2, the condensation tank 4 of a volatile substance, the cooler 5 of a wax, the nitrogen or solvent input device 7, etc.

Description

Continuous system of producing polyolefin wax using horizontal thermal cracking reactor

The present invention is characterized in that in the process for producing a polyolefin wax, it is possible to control the molecular weight distribution of the wax while continuously producing a wax using a horizontal pyrolysis reactor.

Conventional technology has previously selected a batch method for producing polyolefin wax, a kind of additive added in processing various plastic raw materials, by pyrolysis method. All.

The batch method has low productivity and high energy consumption, which incurs the risk of cost increase and safety accidents, and the existing method is difficult to apply to special products due to the wide molecular weight distribution of the wax produced, making it difficult to create high added value.

An object of the present invention to solve the above problems is to reduce the energy and production costs, and to increase the safety by applying a continuous pyrolysis wax production process with a small scale device and low operating costs.

In addition, by using a solvent extraction method in the reactor to narrow the molecular weight of the wax can be used as a special additive to create a high value added.

1 is a schematic view of a continuous polyolefin wax production apparatus of the present invention.

<Description of the code | symbol about the principal part of drawing>

(1): raw material feed extruder (2): horizontal pyrolysis reactor

(3): agitator (4): condensation tank of volatile substances

(5): wax cooler 6: partition

(7): nitrogen and solvent input device

The present invention relates to an apparatus for producing continuous polyolefin wax using pyrolysis, and its purpose is to produce wax at low cost and operating cost, and to make the added value by adjusting the molecular weight distribution. .

1 is a schematic diagram of a continuous wax production process, the configuration of the present invention to construct a continuous polyolefin wax production apparatus using pyrolysis

A raw material conveying extruder (1) for melting raw materials and then transferring them to the reactor, a pyrolysis reactor (2) for pyrolyzing the transferred raw materials to produce wax, a stirrer motor (3) for rotating the stirrer in the reactor, A condenser for condensing low molecular weight wax and low molecular weight wax and volatilized solvent, and a condensing tank for storing the condensed volatile material (4), a heat exchange cooling device (5) for cooling the wax produced by pyrolysis, It consists of a nitrogen storage tank which stores nitrogen which is an inert gas, and the solvent storage tank 7 which stores the solvent for adjusting molecular weight distribution.

Referring to the operation method of the present invention configured as described above are as follows.

The polyolefin raw material to be used for wax production is introduced into the extruder hopper, and the raw material is melted at a predetermined temperature or more in the raw material extruder 1 and then transferred to the pyrolysis reactor 2. The pyrolysis reactor 2 installed each partition 6, and the upper part was spaced to be naturally transported to the next room as it is pyrolyzed, which can be expected to shorten the reaction time and enhance the reaction effect. The stirrer was rotated by operating the stirrer motor 3 so that the raw materials were constantly decomposed, and the volatile substances occupied in the upper space were naturally collected in the condenser, condensed, and then moved to the condenser tank 4. When the molecular weight distribution needs to be adjusted, the solvent was opened by opening the valve of the solvent storage tank 7, and the solvent and the low molecular weight material after the reaction were allowed to move to the condensation tank 4 through the condenser. After the pyrolysis reaction, the wax-made product is transferred to the heat exchange cooling device 5, cooled to a predetermined temperature, and then transferred to a lower production facility leading to the packaging of the finished product.

The present invention as described above is a continuous, shorten the thermal decomposition time can be expected to reduce the production cost and energy, and because of the high value-added product and the reaction device at normal pressure by controlling the molecular weight distribution, and with high results for the operation safety during production You can expect

Claims (3)

In the apparatus for producing a polyolefin wax using the pyrolysis reaction, in order to configure a device for simultaneously processing the pyrolysis reaction and the molecular weight distribution control reaction, An apparatus for producing continuous polyolefin wax, comprising an extrusion device (1), a horizontal pyrolysis reactor (2), a low molecular weight wax recovery tank (4), and a cooler (5) for melting and transporting raw materials to a reactor. The method of claim 1, In the horizontal pyrolysis reactor (2), a partition (6) having an open top portion is installed so that it consists of several rooms, and the raw material undergoing pyrolysis is naturally moved to the next room. Manufacturing device. The method of claim 1, A device for producing a continuous polyolefin wax, wherein a low molecular weight wax is removed by introducing nitrogen or a solvent into the lower end of the horizontal pyrolysis reactor (2).