waste rubber pyrolysis equipment Pyrolysis gases are mainly included
As the waste rubber contains a lot of carbon, hydrogen and other high value of heat elements, so the product of pyrolysis waste rubber gas, liquid oil, carbon black. Pyrolysis gases mainly include carbon monoxide, hydrogen, nitrogen, a small amount of methane, ethane and hydrogen sulfide. The calorific value of the pyrolysis gas is comparable to that of natural gas and can be used as a fuel. Pyrolysis derived oil can do fuel, but also do catalytic cracking of raw materials, the production of high-quality gasoline. Pyrolytic carbon black can be used to prepare rubber / bituminous mixtures, which are better for paving as usual. Activated carbon can also be prepared from carbon black for use in water treatment.
Several Effective Ways of Pyrolysis of Waste Rubber
Preparation of liquid fuels
The waste rubber broken into a diameter of about 100mm small particles, do not remove the wire, together into the thermal decomposition furnace. The thermal decomposition furnace is of the external heat type, and the generated gas is heated from the outside with the reaction pipe of the screw feeder to decompose the waste pieces and the oil and gas are quickly removed by the reduced pressure method. As the spiral feed reaction pipe is an external heating of the closed device, so this process is not polluted, the nature of the oil produced in Table 2. Such as the removal of sulfur in the oil, or the addition of antioxidants for fuel oil.
Preparation of carbon black
Japan Hyogo Prefecture Kobayashi Kobayashi Steel, for the purpose of thermal decomposition of waste rubber for the recovery of carbon black for the purpose of the establishment of a waste rubber processing device, processing tires 7000t, recovery of carbon black 2100t, oil 2800t, scrap 350t, Gas. The way of using external heat rotary kiln way. By comparing the recovered carbon black, general carbon black and high wear-resistant carbon black, it can be seen that the recovered carbon black has a different characteristic value from the commercial carbon black, but its complex has higher reinforcement than the conventional carbon black , Similar to high wear-resistant carbon black. So the recovery of carbon black is a new reinforcing agent. With the recovery of carbon black to meet the requirements of general rubber products, but also to achieve better economic benefits.
Preparation of activated carbon
Stone bridge tire company analyzed the thermal decomposition of waste rubber to produce residual carbon components: carbon black accounted for 80% to 90%, inorganic (zinc sulfide, etc.) accounted for 8% to 12%, organic matter accounted for 3% to 10%, in addition to A small amount of rubber and fiber resin compounds and carbon compounds. First, the residue of charcoal and charcoal crushed, and then in proportion with the asphalt, the mixing, into the rotary carbonization furnace, in the 500 ~ 600 ℃ to remove volatile components, and then into the activation furnace, 800 ~ 900 ℃ access to water vapor, To give the activity, the final preparation of activated carbon products. This kind of activated carbon has high breaking strength, good sugar decolorization ability, adsorption speed, regeneration performance, regeneration loss, recovery force and the same product.
Waste rubber pyrolysis technology has a unique advantage (such as the ease of transport of oil, carbon black), but because the tire in the manufacturing process contains a lot of additives such as antioxidants, curing agent Y, which not only heat The process of environmental pollution (such as hydrogen sulfide), and the pyrolysis of oil sulfur content is high. Pyrolysis of carbon black ash content is high, so that it hindered their wide application. Waste rubber pyrolysis is a series of related process technology in the environmental protection industry integration, how to develop no secondary pollution of waste rubber pyrolysis technology, is the urgent need to solve the problem.