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Preparation method of polyethylene wax micropowder and spray granulation system

A technology of polyethylene wax micropowder and polyethylene wax, which is applied in the direction of liquid separation into beads and granules, can solve the problems of high equipment investment and operation difficulty, and the lack of widespread use of polyethylene wax micropowder, etc., to improve heat transfer rate and manufacture Good particle effect, easy operation and maintenance

Active Publication Date: 2013-09-04
淮南市德瑞环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can break through the particle size that cannot be achieved by traditional methods, it requires high equipment investment and difficult operation. Therefore, it is not widely used in the production of polyethylene wax micropowder at present.

Method used

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  • Preparation method of polyethylene wax micropowder and spray granulation system
  • Preparation method of polyethylene wax micropowder and spray granulation system
  • Preparation method of polyethylene wax micropowder and spray granulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 Shown is the spray granulation system under a kind of embodiment of the present invention, the double-deck cylindrical spray granulation tower 15 height 13m that stainless steel material is made, diameter 1.6m, tower wall double-layer jacket distance 30mm, cooling brine from tower The lower cooling brine inlet 19 enters the jacket and flows out from the cooling brine outlet 18 from bottom to top. Stainless steel fins with a height of 20mm and a length of 120mm are welded on the inner wall of the jacket 14, such as figure 2 As shown, a "T"-shaped layout structure is adopted between multiple fins to help increase the turbulence rate when the cooling water flows and improve the heat transfer rate.

[0033] Spray granulation tower 15 The outside of the tower body is wrapped with 150mm thick rock wool insulation material to effectively prevent the loss of cooling capacity in the tower; thermocouple thermometers are installed at the upper and lower ends of ...

Embodiment 2

[0035] Such as figure 1 Shown is the spray granulation system under one embodiment of the present invention. The stainless steel spray granulation tower 15 is a double-layer cylindrical tower body with a tower height of 3.6m and a diameter of 0.8m. The lower part enters the jacket and flows out from the upper cooling brine outlet 18. Stainless steel fins with a height of 20mm and a length of 120mm are welded on the inner wall of the jacket 14, and a "D"-shaped layout structure is adopted between a plurality of said fins, such as figure 2 As shown, it is beneficial to increase the turbulence rate when the cooling water flows.

[0036] The outer side of the tower body is wrapped with 150 mm thick insulation material to prevent the loss of cooling capacity in the tower body, and thermocouple thermometers are installed at the upper and lower ends of the tower body to detect and indicate the temperature of the outer wall of the tower body. The gas distributor 11 is installed at ...

Embodiment 3

[0039] A preparation method of polyethylene wax micropowder, comprising the steps of:

[0040] (1) Melting and conveying of raw materials: add the flake polyethylene wax solid into the polyethylene wax melting tank 7, the outer side of the melting tank is the electric heating oil bath jacket 5 and the insulation layer 6 in sequence, and the temperature range is controlled by the temperature controller 8 110-130°C, the solid polyethylene wax melts into a viscous flowing liquid; the flow rate of the viscous flowing liquid is 1m 3 / h thermal insulation gear pump 10 is transported to the air pressure composite atomizer 12, the gear pump provides a pressure range of 0.06-0.08MPa; the feed liquid is transported by a copper tube with a diameter of Φ20mm, and the outside of the tube is wrapped with a high-temperature-resistant thermal insulation material to prevent the feed liquid from being caused by The cooling condenses in the pipeline; the connecting pipeline from the melting tank...

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Abstract

The invention discloses a preparation method of polyethylene wax micropowder. The preparation method comprises the following steps of: (1) melting and conveying raw materials, i.e., polyethylene wax feed liquid is prepared by adopting a heating device, the polyethylene wax feed liquid is conveyed to an atomizer inside a spray granulation tower by using a heat-insulation gear pump through a pipeline, and the pipeline and other parts of the atomizer, except a spray hole, need to be subjected to integral heat insulation; (2) compressing and atomizing air, i.e., compressed air provided by an air compressor is conveyed into the atomizer through another pipeline and is matched with the polyethylene wax feed liquid with the pressure, the polyethylene wax feed liquid is sufficiently atomized, and the atomized fogdrops are cooled and solidified into micropowder in the granulation tower; and (3) collecting a product, i.e., the cooled and solidified micropowder is collected by using a collecting device to obtain the product. The invention further discloses a spray granulation system which is used for preparing the polyethylene wax micropowder. The preparation method disclosed by the invention is low in energy consumption, simple and convenient to operate and safe and reliable; and the prepared product has small granularity.

Description

technical field [0001] The invention relates to a preparation method and device of polyethylene wax micropowder, in particular to a method and a spray granulation system for preparing polyethylene wax micropowder by spraying with an airflow pressure composite atomizer. Background technique [0002] Polyethylene wax is a non-toxic, odorless, non-corrosive, white or slightly yellowish low-molecular-weight polyethylene solid with a relative molecular mass of 500-10,000. It has good chemical stability at room temperature, moisture resistance, and Chemical ability, electrical properties, wear resistance and heat resistance, and good lubricity, dispersion, and fluidity; it also has good compatibility with other types of waxes and polyolefin resins. Polyethylene wax micropowder is widely used and convenient. It can be used as raw material of chlorinated polyethylene, plastic modifier, textile coating agent and additive to improve the viscosity of crude oil and fuel oil; used as an ...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08L23/06B01J2/02
Inventor 陈明功倪源满范旭万亚丽任启云葛良赋李忠姚多祥
Owner 淮南市德瑞环保科技有限公司
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