CN1432458A

CN1432458A - Waste tyre processing method

Info

Publication number: CN1432458A
Application number: CN02110554A
Authority: CN
Inventors: 徐俊彦; 徐俊士
Original assignee: SHANGHAI LUREN ECOLOGICAL ECONOMIC SCIENCE & TECHNOLOGY Co Ltd
Current assignee: SHANGHAI LUREN ECOLOGICAL ECONOMIC SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2002-01-15
Filing date: 2002-01-15
Publication date: 2003-07-30

Abstract

The waste type processing method includes three processes of tyre crushing, thermal cracking and carbon black crushing and packing. During the tyre crushing processes, waste type is first-crushed in pre-crusher and washed, and then crushed for the second time into rubber grains below 25 mm size. During the thermal cracking process, the rubber grains are thermally cracked in thermal cracking furnace at 480-700 deg.c and 0.01-0.04 MPa negative pressure, the gaseous product is condensated and cooled in washing tower to obtain fuel oil, the uncondensated light components is reused as fuel gas in the furnace and excessive inflammable gas is for heat energy conversion to provide hot water. In the carbon black crushing and packing process, the mixed material of carbon black and steel wire obtained in the thermal cracking process is magnetic separated and the carbon black is ground and packed as product.

Description

A kind of processing method of junked tire

Technical field:

The present invention relates to the treatment process in rubber processing field, particularly a kind of waste and used rubber tyre.

Background technology:

The technology of handling junked tire in the prior art mainly is to be reprocessed into reclaimed rubber, the use of rubber powder degradation after the rubber part of junked tire is peeled off with steel wire, fibrous material etc., also there is the pyrolysis method of employing to handle, with sizing material in cracking under the condition of 230-240 degree centigrade temperature and pressure 0.1-0.2Mpa under the mica sheet catalysis, make products such as combustible gas, fuel oil, carbon black, or under the condition of normal pressure, middle temperature, carry out catalytic pyrolysis and produce oil gas, gasoline, diesel oil and carbon black etc. with active white clouds, acidifying class holder stone etc.

Summary of the invention:

Technical problem to be solved by this invention is: owing to handle the technology of junked tire in the prior art mainly is rubber part and steel wire with junked tire, after peeling off, fibrous material etc. are reprocessed into reclaimed rubber, the rubber powder degradation uses, also there is the pyrolysis method of employing to handle, with sizing material in cracking under the condition of 230-240 degree centigrade temperature and pressure 0.1-0.2Mpa under the mica sheet catalysis, make combustible gas, fuel oil, products such as carbon black, or at normal pressure, in the temperature condition under with active white clouds, acidifying class holder stone etc. carries out catalytic pyrolysis and produces oil gas, gasoline, diesel oil and carbon black etc., but in these methods in the prior art, the processing of junked tire needs at first framework material---the fiber cord with tire, all-steel cord separates with rubber, the intensity and the production cost of work have been increased like this, it is also incomplete to reclaim separation, the waste rubber sources, again because thermal cracking process needs certain working pressure, the cost and the production cost of equipment had so both been increased, increase operation easier and unsafe hidden danger again, the thermal cracking process Technology Need adds certain catalyst simultaneously, can cause secondary pollution and influence the quality of product, and the dry gas of producing reclaims perfect inadequately, the product oils that reclaims, carbon black mass is relatively poor, and value-added content of product is lower.The present invention is that the technical scheme that solves the problems of the technologies described above employing is: the processing method that a kind of junked tire is provided, the processing method of described this junked tire comprises: the broken section of tire, thermal cracking is handled, three processes of carbon black crushing packing, the process of the broken section of described tire is at first junked tire to be sent into the prebreaker fragmentation by conveyer belt, pass through washing, purifying then, sending into the recursher break process again becomes diameter at the micelle below 25 millimeters, described thermal cracking processing procedure is the pyrolysis technology that adopts in the prior art, comprise that micelle that the process that will go up obtains is transported to pyrocrack furnace and carries out thermal cracking, micelle carries out thermal cracking under the micro-vacuum state of 480-700 degree centigrade and 0.01-0.04 megapascal (MPa), wherein gaseous products enters scrubbing tower condensation cooling, the fuel oil that condensation is got off send the tank field to store after cooling, uncooled light component (the hydro carbons gas phase that C5 is following) reclaims the combustion gas as pyrocrack furnace, superfluous combustible gas provides the domestic hot-water to use by thermal power transfer; Described carbon black is pulverized packaging process and is comprised that carbon black, steel wire that previous step is obtained suddenly mix the cooling of solid phase material, through magnetic separation the steel scrap silk isolated then, and the steel scrap silk warehouse-in that is recycled and packaged, carbon black grinds to form finished product packing and puts in storage through pulverizing.The present invention contrasts prior art, owing to adopted the special plant equipment of no lift-off technology, before thermal cracking, do not need rubber in the tire and tyre framework material---all-steel cord, fiber cord separates with rubber in advance, has less energy consumption, technology is excellent, improved the organic efficiency of resource, again owing in thermal cracking process, adopted little negative pressure technique, thereby do not have waste gas and leak, non-wastewater discharge, the recyclable utilization of the fuel gas that generates after the thermal cracking, the steel wire of gained can be used as the raw material of metallurgy industry, the carbon black of gained has reached the requirement of using by analysis qualitatively on rubber and tire manufacturing industry.

Description of drawings:

Fig. 1 is the process chart of the processing method of a kind of junked tire of the present invention.

Among the figure, the 1st, junked tire, the 2nd, prebreaker precrushing, the 3rd, washing, the 4th, recursher second-time breakage, the 5th, thermal cracking, the 6th, scrubbing tower condensation cooling, the 7th, fuel oil send the tank field to store after cooling, and the 8th, combustion gas, the 9th, thermal power transfer, the 10th, the domestic hot-water, the 11st, the steel scrap silk separates, and the 12nd, the steel scrap silk warehouse-in that is recycled and packaged, the 13rd, carbon black grinds to form finished product packing and puts in storage through pulverizing.

The specific embodiment:

As shown in Figure 1, the processing method of a kind of junked tire of the present invention comprises: the broken section of tire, thermal cracking is handled, three processes of carbon black crushing packing, the process of the broken section of described tire is at first junked tire 1 to be sent into prebreaker precrushing 2 by conveyer belt, purify through washing 3 then, send into recursher second-time breakage 4 again and be processed into diameter at the micelle below 25 millimeters, described thermal cracking processing procedure is the pyrolysis technology that adopts in the prior art, comprise that micelle that the process that will go up obtains is transported to pyrocrack furnace and carries out thermal cracking 5, micelle carries out thermal cracking under the micro-vacuum state of 480-700 degree centigrade and 0.01-0.04 megapascal (MPa), wherein gaseous products enters scrubbing tower condensation cooling 6, the fuel oil that obtains, send the tank field to store 7, uncooled light component (the hydro carbons gas phase that C5 is following) reclaims the combustion gas 8 as pyrocrack furnace, superfluous combustible gas provides domestic hot-water 10 to use by thermal power transfer 9; Described carbon black is pulverized packaging process and is comprised that carbon black, steel wire that previous step is obtained suddenly mix the cooling of solid phase material, through magnetic separation the steel scrap silk is separated 11 then, the steel scrap silk that obtains, and the warehouse-in 12 that is recycled and packaged, carbon black grinds to form finished product packing warehouse-in 13 through pulverizing.In a preferred embodiment of the present invention, 1000kg junked tire 1 is sent into prebreaker precrushing 2 by conveyer belt, process through washing 3 purifies then, send into recursher second-time breakage 4 again and be processed into diameter at the micelle below 25 millimeters, the micelle that obtains is transported to pyrocrack furnace carries out thermal cracking 5, micelle carries out thermal cracking under the micro-vacuum state of 480-700 degree centigrade and 0.03 megapascal (MPa), wherein gaseous products enters scrubbing tower condensation cooling 6, obtain the 350kg fuel oil, send the tank field to store 7, uncooled light component (the hydro carbons gas phase that C5 is following) 100kg, recovery is as the combustion gas 8 of pyrocrack furnace, superfluous combustible gas provides domestic hot-water 10 to use the carbon black that obtains by thermal power transfer 9, after steel wire mixes the cooling of solid phase material, through magnetic separation the steel scrap silk is separated 11, obtain 220kg steel scrap silk, the warehouse-in 12 that is recycled and packaged, the 330kg carbon black that obtains grinds to form finished product packing warehouse-in 13 through pulverizing.The present invention is owing to adopted no lift-off technology and adopted little negative pressure technique in thermal cracking process, thereby do not have that waste gas leaks, non-wastewater discharge, the recyclable utilization of the fuel gas that generates after the thermal cracking, the steel wire of gained can be used as the raw material of metallurgy industry, the carbon black of gained has reached the requirement of using by analysis qualitatively on rubber and tire manufacturing industry.

Claims

1, a kind of processing method of junked tire, comprise the broken section of tire, thermal cracking is handled, the process of carbon black crushing packing, it is characterized in that: the process of the broken section of described tire is at first junked tire to be sent into the prebreaker fragmentation by conveyer belt, pass through washing, purifying then, sending into the recursher break process again becomes diameter at the micelle below 25 millimeters, described thermal cracking processing procedure is the pyrolysis technology that adopts in the prior art, comprise that micelle that the process that will go up obtains is transported to pyrocrack furnace and carries out thermal cracking, micelle carries out thermal cracking under the micro-vacuum state of 480-700 degree centigrade and 0.01-0.04 megapascal (MPa), wherein gaseous products enters scrubbing tower condensation cooling, the fuel oil that condensation is got off send the tank field to store after cooling, uncooled light component (the hydro carbons gas phase that C5 is following) reclaims the combustion gas as pyrocrack furnace, described carbon black is pulverized packaging process and is comprised the carbon black that previous step is obtained suddenly, steel wire mixes the cooling of solid phase material, through magnetic separation the steel scrap silk is isolated then, the steel scrap silk warehouse-in that is recycled and packaged, carbon black grinds to form the finished product packing warehouse-in through pulverizing.