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Never know we could come arcoss something like this!
We claim:
1. A process for recovering carbon black from scrap vulcanized rubber, comprising the steps of:
a. dissolving rubber pieces in an aromatic solvent oil under inert conditions in a stirred reactor at about 25-100 psig pressure and about 500.degree.-700.degree.F for a time sufficient to dissolve substantially all the rubber and to form a liquid-solid slurry mixture;
b. removing metallic and other foreign particles from the liquid-solid slurry mixture and passing the resultant liquid-solid slurry through a filter for separating the resultant remaining solids portion containing carbon black from the liquid-solid slurry mixture;
c. distilling the resultant filtrate to recover a light solvent and returning at least a portion thereof to the filter of step (b) along with the liquid-solid slurry mixture of step (a) and passing at least a portion of recovered heavy aromatic solvent oil resulting from said distillation to the stirred reactor of step (a);
d. drying and screening the separated carbon black of step (b) to remove any remaining fibers and foreign particles;
e. removing zinc and ash compounds from the carbon black of step (d) by washing the carbon black with an acid adapted to remove zinc and ash compounds;
f. washing the resulting carbon black of step (e) with water to remove any acid remaining after step (e); and
g. drying the resultant carbon black.
2. The process of claim 1 wherein the carbon black is separated from the dissolved liquid slurry by a filtration step utilizing carbon black as the filter aid material.
3. The process of claim 1, wherein the vulcanized rubber pieces are chopped to smaller size having a major dimension of 0.25 to 2 inches.
4. The process of claim 1, wherein the liquid portion resulting from step (c) is distilled and the resulting aromatic solvent oil is removed.
5. The process of claim 1 wherein fine metal pieces are removed by a magnetic separation step downstream of the reactor.
6. The process of claim 1 in which step (a) is conducted for a time of about 0.5-2 hours.
he isnt the president anymore check PKS its has been updated
U.S. Patent Documents
1175732 March 1916 Evans et al.
2149671 March 1939 Franck et al.
2631982 March 1953 Donegan
3148140 September 1964 Kaiser et al.
3375188 March 1968 Bloomer
3704108 November 1972 Alpert
3808328 April 1974 Kelly
3823224 July 1974 Laman et al.
1916?
Recovering carbon black from waste rubber
Abstract
Carbon black is recovered from vulcanized waste rubber such as automobile tires or other articles by reacting pieces of the rubber with an aromatic oil solvent in a stirred reactor at 500.degree.-700.degree.F temperature and about 25-100 psig pressure for 0.5-2 hours residence time. The resulting solids-liquid mixture is processed to remove solids, and the resulting solid product is then dried, screened and chemically treated to recover the carbon black in dry powder form. The remaining solvent oil is also recovered and a portion reused in the process.
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Inventors: Maruhnic; Peter (Pennington, NJ), Wolk; Ronald Howard (San Jose, CA), Battista; Carmine A. (Fairless Hills, PA)
Assignee: Hydrocarbon Research, Inc. (Morristown, NJ)
Appl. No.: 05/545,500
Filed: January 30, 1975
One of the objects of this invention is to provide a novel process for making useful materials from waste rubber.
Another of the objects of this invention is to make rubberized carbon black from waste rubber which originally was compounded with carbon black.
A further object of this invention is to make useful articles incorporating rubberized carbon black and having unusual and valuable physical, mechanical and thermal properties.
Yet another object of this invention is to reduce pollution caused by the conventional practice of burning used automobile tires and also to reduce the strain on the capacities of waste disposal sites by making useful materials and articles from scrap material such as used automobile tires which otherwise would be discarded in landfills.
Many processes are known for recovering the hydrocarbon content (e.g. rubber) and the carbon black content of worn automobile tires for reuse, in one form or another.
Some typical patents disclosing such processes are:
U.S. Pat. No. 4,025,990 (1977) to Lovette discloses a cryogenic process for recovering rubber in the form of crumb rubber, fabric and metal components from scrapped automobile tires.
U.S. Pat. No. 3,997,407 (1976) to Fuji et al. discloses dry distillation of scrap tires in a vertical dry distillation retort to recover carbon black and oil.
U.S. Pat. No. 4,250,158 (1981) to Solbakken et al. discloses pyrolizing used tires in an oxygen-limited hydrocarbon vapor at subatmospheric pressure to eventually recover carbon black, tar, oil and fuel gas.
Which process doeus PMDP's converter use? Because several processes are available for making carbon black, including a thermal black process, an acetylene black process, a lampblack process, an impingement or channel process, and an oil-furnace process.
so which is it Bobby Matthews? Or something totally different?
Volume that doesnt show in that chart 50m block at 0006, check out the trades for the day
ACK it wont let me edit! i mean "this" not "his" wtf sorry Mastert!
hmm maybe hes tired of his bs story
MasterT where are you?!?
We have been through this and you know exactly why he is going to Dubai Tracker
Kenny man I dunno what to say anymore =/
DEAL!
• 200 I need shares badly,but do not take the stock down.
• 100 I need shares.
heh, ask building now at 6, dont like that
lol nice man!
911!911!
road trip! lets leave at 3 err 5 err 6 err 7 err 3, go PMDP lol!
Yeah yer right, sorry doing too many things at once, it was more directed at the board
lol, i meant even on the trading
amazing silence all of a sudden..
wheres mastertrader? Tracker? big supporters where you go?
probably the guy that dropped the 50m block at 6 which isnt showing in the volume? 1 sale 50m
its not showing up in the volume...
50million at 6?
Antonio Katz
(732) 977-5103
10 Steeple Chase Ct
Normandy Beach, NJ 07724
Sure does! lol
Gunna be alot more than a few ticks loss IMO, lol
MCCI looking good for a breakout MOMO, not much left IMO, small hits taking down the ask!
NITE stands alone, could push here!
Calvary has been contacted! LOL, PMDP will run alright =)
all Gunther, Joey and Tony had to do was share just a little bit. Its a shame
hey its a Buddy!, GM guys hopefully we stay with 2 @ 3 into the open
2 or 3 maybe 4 lol
looks good, i jsut dont get the sudden halt around 2pm
yep so i see
sounds like an exciting option!