Automatic rubber powder plasticizing process and apparatus thereof

Abstract

The invention relates to a technique of automatic rubber powder plasticization which carries out plasticization to the rubber powder in the recovery, processing and utilization of waste rubber. The waste rubber powder is smashed to 10 meshes to 40 meshes, added with an activator and a softer according to a weight ratio of 1:0.3-0.4 percent: 8-18 percent, evenly mixed, and heated to 180 DEG C to 320 DEG C with temperature preserved for 8min to 15min; then desulfurization and plasticizing are carried out, and plasticized rubber powder is obtained after being cooled. The invention also provides a device for plasticizing processing, which comprises a stirring device (1), a feeding device (2), a thermal reaction device (3) and a cooling device (4), which are all communicated with each other in sequence. The technique is simple, can realize automatic continuous production, has no pressure and no discharging of waste gas and no pollution, is safe and reliable, and has stable quality stable and easy control. The plasticized rubber powder processed can be directly used for the production of rubber products without dehydration, thereby saving energy, reducing consumption and having little investment and low cost. The device can realize automatic continuous production, and is simple in structure, easy and convenient in operation, easy to control and low in cost.

Description

1. Technical field [0001] The invention relates to an automatic rubber powder plasticizing process for plasticizing rubber powder in recycling, processing and utilization of waste rubber. The invention also provides a plasticizing treatment device for the plasticizing process. 2. Background technology [0002] As an important strategic material, rubber is strictly controlled by all countries. my country is a country that uses a lot of rubber, but also a country that is extremely scarce in rubber resources and produces a lot of waste rubber. In order to solve the shortage of rubber resources in our country, our country has been advocating, encouraging and supporting the recycling of waste rubber and the production of reclaimed rubber. [0003] Rubber powder is an intermediate product of waste rubber recycling, and it is an important resource for the production of reclaimed rubber. Therefore its quality determines the quality of reclaimed rubber. [0004] At present, the d...

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Problems solved by technology

[0005] 1. The pressure is high. The working pressure during desulfurization is 2.2-4.0MPa. The dynamic desulfurization tank needs to use a type II pressure vessel, and long-term use or improper use will cause safety hazards such as thinning of the tank wall, and even lead to equipment and personal accidents.

[0006] 2. Add water and discharge exhaust gas. In order to prevent the rubber powder from being carbonized due to uneven heating under high temperature conditions, a certain amount of water should be added to form steam or directly pass in water vapor as a heat transfer medium during desulfurization. However, water vapor and; and The added softener produces complex reactions, resulting in unpleasant smelly exhaust gas and serious environmental pollution

Although it has been dealt with, the pollution problem cannot be fundamentally solved at present.

[0007] 3. The production process is intermittent production, and manual feeding, can not be continuous production, low productivity, high labor intensity, labor-intensive

[0008] 4. High energy consumption, because of intermittent production, high pressure and steam are wasteful, and the production cost is high

[0009] 5. The quality is unstable and difficult to control; due to intermittent production, the quality fluctuations between batches are large and difficult to control, and because complex reactions are carried out under high-pressure, high-temperature, and high-humidity production conditions, each batch The quality of the product can only be known after pressure relief and steam discharge, so the quality of each batch is not easy to control

[0010] 6. The processed rubber powder must be dehydrated before it can be used in the production of recycled rubber products; the dehydration process is complex and requires a complete set of equipment, which requires large investment, high energy consumption and high cost

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