DE2202903B1 - Process for the disposal and recycling of waste material for motor vehicles - Google Patents

Description

3 4

In order to cope with these differences in the quality of the coke, the coal must be delivered in shredded sizes below 10 mm,

to let as little protrude as possible, sees the He- can in the case of coking in separate chambers

Finding the scrap tire material only as small mern much larger pieces, z. B. from the ceiling

Proportion of a large excess of coking coal cut strips of about 100 mm in length.

put. The annual accumulation of used tires (250 0001) 5 must be worked on. To protect against caking

is about 0.6% of the coked coal (40MiIHo- they are embedded in a lean agent, e.g.

nen t). Geographical location, freight and distribution in coking coal, lean coal or sand,

cost, of course, an even distribution In the above, the processing of the AIt-

of the old material does not go to the coking plant, but material in the case of classic coking in the usual way

suggest that processing of the scrap material should only be dealt with in coke chamber furnaces. The idea of the invention

in a small part of the coking plants, for example the joint processing of old tires

10 ° / o, by then on the average a mine and coal can also be used in other coking

to process 94% coking coal and 6% old tires and in other devices, e.g. on

would process. Here, too, the dilution roaming grate, rotary stoves, rotary kiln, flushing gas retor

effect sufficient. 15 th, vertical and inclined chamber furnaces, with z. B.

Should any impairment of the quality of the high-smoke, low-smoke house-fire fuel as coke oven coke excluded and still the advantages of residue and the heat from burners Joint coking of waste material and the coking gases generated, realized who-coal perceived, it becomes part of the den.

Chambers of the furnace battery, in the numerical example 6% 30 Furthermore, the method of the invention can be used in

of the chambers, predominantly or exclusively with coal gasification with hydrogen, with or without

Tire waste material, the rest, i.e. 94% of the solid or liquid heat transfer medium or with oxygen -

mern are charged solely with coking coal, all chambers and water vapor for the generation of liquid and /

regarding heating, removal of gaseous or gaseous products (synthetic natural gas)

and liquid volatile products operated together, as can be used with the same advantage by the

however, the coke produced is obtained separately. shredded tire waste material from the feed coal

While in the case of mixing coal and blended and processed together with the latter

Old material this to about the same grain size as will.

Claims (3)

1 2 of the old material in an already existing work patent claims: sequence and to be relocated in already existing and in operation devices, whereby 1. Procedure for disposal and recycling saves on location and personnel costs. of old motor vehicle tire material by 5 in favor of the simplicity of recycling thermal decomposition, thereby resulting in the recovery of a variety of the thermal indicates that the waste material from the tires see decomposition resulting products deliberately is coked or gasified together with coal. pulled. With the completed thermal decomposition 2. The method according to claim 1, characterized in that the main objective, namely the removal of the old maize, applies, that in a coking plant that on pas- ίο terials, than achieved. send grain size of shredded waste tire material. A preferred embodiment of the method as a small proportion of a large excess of the invention is characterized in that the Coking coal is mixed in and together with this, old tire mills are crushed to the appropriate grain size. on the end products coke, liquid products and material in a coking plant as a small proportion of a large gas is processed. 15 ßen excess of coking coal mixed in and 3. The method according to claim 1, characterized together with this on the end products coke, flüskmarks that a small part of the chambers sige products and gas is processed. The menu of a furnace battery predominantly or exclusively "large surplus" is chosen in order to make the individuality of the elastomer as a whole disappear as far as possible with regard to the discharge of the gaseous coke production.
and liquid products together with the coke The advantages of the joint coking of coal-bearing chambers operated, which are obtained separately from coal and waste material with greater scope for coking coal and the pretreatment of waste material obtained from waste material with secured coke types. Compliance with the usual coke quality offers one 25 embodiment of the invention, which is characterized in that a small part of the chambers an oven battery predominantly or exclusively Loaded with shredded tire waste material, with regard to the discharge of the gaseous and liquid The destruction and recycling of old tires 30 products together with the coking coal is a so far unsolved problem. In the federal chambers operated, those from coking coal and those from publik Germany, around 30 million types of coke from old material are collected separately each year Piece (300 0001) of tires. A fifth of it will be won. used for regenerate production. The rest of itself is the tire scrap as an elastomer 250 0001 must be eliminated. 35 a foreign body in the coking plant. At approximate The dumping in the open country is only an additional elemental analysis of coal and rubber are pushing the necessary destruction. Open molecular structure and structure but burning properly is different because of environmental pollution by soot. Tire rubber contains only a _{small amount of SO 2} and hardly any bad smells in the smallest amount of water compared to coal, but it is genuinely permissible. In special incineration plants, a multiple of the components are used, which are intensively cleaned even with low flue gases, but the lower heating is volatile and the chemical costs - up to DM 100 per tonne are interesting raw materials,
give - are prohibitive for general use. As far as they like benzene and toluene in the usual ar- The acquisition of valuable auxiliary or basic work is obtained and used, they are to evaluate substances for the chemical industry or tire 45 as welcome by-products. Son making recently described working methods are dedicated to the extraction of other substances, Carefully interested in the waste tire material economically, but are irritating Heating in steps of 500 and 900 ° C, in line with the process objective of eliminating the old scrap as well also not necessary in a vacuum and infrared radiation. to decompose chemically, the liquid products fracture tioned to distill and the soot-shaped re-volatile products (including benzene, toluene, Xystand to be used as tire filling material. The construction lol) two to three times the size of coal. With steider The systems required for this allow even the necessary temperature of the chamber walls to become earthy, the tire scrap material from the world to create - a substantial part of the volatile products to the stable, Molecules such as methane and hydrogen do not appear attractive because of the great effort involved. cracks, which then the main components of the gas What is needed is simplicity of the means and the form products. Due to the strong dilution objective, a way of working that does not have to deal with the volatile coking products of the Kaupital expenditure the entire accumulation of scrap tires from Ko- chuk when working according to the invention is the comprehensive, reliable, with the exclusion of a tendency for some of them to repolymerize to eliminate nuisance or damage to the environment effectively hindered. allowed. This is the mode of operation of the present. The yield of coke from the elastomer is Invention: It is a method of disposal and is much smaller than from coking coal. The sales recycle of motor vehicle tire scrap residue from the elastomer is at 900 ° C due to its thermal decomposition, resulting in a crumbly, carbon-free 65 chamber temperature, that the tire waste material in common Ches material that at higher cooking temperature is coked or gasified with coal. but becomes low in gas, lumpy and hard, without any The purpose of this measure is to achieve the processing of the blast furnace coke in terms of lump size.