KR200233353Y1 - Continuous system of producing polyolefin wax using vertical thermal-cracking reactor - Google Patents

Abstract

The present invention can reduce the energy and manufacturing cost by continuously manufacturing a polyolefin wax using a vertical pyrolysis reactor, and by improving its quality by controlling the molecular weight distribution of the wax by mounting its own solvent input device To improve the device.

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

Description

Continuous system for producing polyolefin wax using vertical pyrolysis reactor

The present invention is characterized in that in the process for producing a polyolefin wax, the molecular weight distribution of the wax can be adjusted while continuously producing the wax using a vertical pyrolysis reactor.

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

Batch-type methods have low productivity, high energy consumption, and inherent risks of cost increase and safety accidents.The basic method is difficult to apply to special products due to the wide molecular weight distribution of the produced wax, 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.

<Explanation of symbols for the main parts of the drawings>

(1): raw material feed extruder (2): vertical 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 a continuous polyolefin wax production apparatus using the pyrolysis method, the object of which consists of the configuration and operation principle of the device to increase the added value by producing a wax at a low cost and operating cost, and adjusting the molecular weight distribution.

1 is a schematic diagram of a continuous wax production process, the configuration of the subject innovation is a raw material transport extruder (1) for transporting the raw material to the reactor after melting the raw material in order to configure a continuous polyolefin wax production apparatus using pyrolysis Pyrolysis reactor (2) for producing wax by pyrolysis, stirrer motor (3) for rotating agitator in reactor, low volatility material generated during pyrolysis reaction or low molecular weight wax and volatilized solvent produced during molecular weight control And a condensation tank (4) for storing the condensed volatiles, a heat exchange cooling device (5) for cooling the wax produced by pyrolysis, a nitrogen storage tank for storing nitrogen as an inert gas, and a solvent for storing a solvent for controlling molecular weight distribution The storage tank 7 etc. are comprised.

The apparatus is intended to ameliorate the shortcomings of a continuous polyolefin wax making apparatus using a vertical pyrolysis reactor.

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 an 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 molten raw material enters the lower part of the reactor and is transferred upwards to each room according to the injection speed of the raw material injection device. Therefore, the feed rate of the raw material can be adjusted according to the injection speed of the hopper. In each room, it was mixed evenly by the stirrer, and the temperature was considered uniformly and molecular weight distribution was considered. The gas from each room is collected at the top of the center of the room against the centrifugal force and gravity and discharged to the top of the reactor. The volatiles thus discharged are naturally collected in the condenser, condensed, and then moved to the condensation tank 4. When the molecular weight distribution control is required, the solvent is opened by opening the valve of the solvent storage tank 7, and the solvent and the low molecular weight substance after the reaction are allowed to move to the condensation tank 4 through the condenser. After the pyrolysis reaction, the liquid product made of wax is overflowed from the reactor, transferred to the heat exchanger 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 the high molecular weight distribution of the product by the value-added and the reaction device at normal pressure, as well as 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 vertical 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, Apparatus for producing a continuous polyolefin wax, characterized in that the partition (6) is installed in the vertical pyrolysis reactor (2) to be composed of several rooms, and the raw material undergoing pyrolysis is gradually moved to the next room. The method of claim 1, A device for producing a continuous polyolefin wax characterized by removing a low molecular weight wax by introducing nitrogen or a solvent into the upper portion of the vertical pyrolysis reactor (2).