Continuous thermal-cracking method and apparatus for waste and old tires

A waste tire and thermal cracking technology, which is applied in the preparation of liquid hydrocarbon mixture, fibrous filler, petroleum industry, etc., can solve the problems of unsatisfactory carbon black quality, energy waste, environmental pollution, etc., and achieve continuous production saving and activity improvement and quality, energy saving effect
CN104031672AInactive Publication Date: 2014-09-10中机国宏高分子技术研究(北京)中心
5 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
中机国宏高分子技术研究(北京)中心
Publication Date
2014-09-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a continuous thermal-cracking method and an apparatus for waste and old tires. The method comprises the following steps: (1) preheating waste and old tire at 230-250 DEG C for 15-25 min, and under a vacuum condition, extracting and removing a gas generated in the preheating process; (2) heating the material obtained in the step (1) to 340-360 DEG C, and performing cracking at 340-360 DEG C for 8-12 min to enable natural rubber to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process; (3) heating the material obtained in the step (2) to 440-460 DEG C, and performing cracking at 440-460 DEG C for 8-12 min to enable cis-1,4-polybutadiene rubber and styrene-butadiene rubber to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process; and (4) heating the material obtained in the step (3) to 540-560 DEG C, and performing cracking at 540-560 DEG C for 8-12 min to enable carbonaceous sediment on the surface of carbon black to be cracked, and under a vacuum condition, extracting and removing a gas generated in the cracking process. The method and the apparatus are capable of effectively removing sediment on the surface of carbon black, improving the activity and the quality of carbon black, and realizing cracking continuous production of waste and old tires in a low energy consumption way.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method and device for comprehensive utilization of waste tires, in particular to a method and device for continuous thermal cracking of waste tires. Background technique

[0002] The thermal cracking of waste tires is the last key step in the comprehensive utilization of waste tires and turning waste into treasure. For a long time, it has received great attention from all walks of life, and many researchers have done a lot of research and experimental work for it. However, due to various reasons, an ideal large-scale, industrialized, continuous production line that meets environmental protection requirements and is economically feasible has not yet been formed. So far, the existing pyrolysis furnaces capable of continuous production focus on the separation of oil for the cracking of waste tires, and the quality of the finally obtained carbon black is not ideal, while the intermittent production pyrolysis furnaces can make th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More