A method of processing rubber waste
The invention relates to the disposal of chemical waste - organic waste management in motor fuels and chemical raw materials, which can be used as boiler fuel, bitumopodobnaya binder or raw materials for its production, carbon black or the raw material for electric arc furnaces, electrolysis baths, carbon-carbon materials for metallurgy and so on, and a small amount of hydrocarbon gas, which can be used as fuel. The method is carried out by thermosignal waste when it starts in an organic solvent at a temperature 280-435oC and a pressure of not less than 2.9 MPa, the separation of the liquid fraction on the fraction with a boiling point above 220oWhen the mass ratio of solvent to waste when you run more than 1.0. When this liquid fraction with a boiling point up to 220osubjected to catalytic reforming, and part of the liquid fraction is then used as the target product, and the part used as a solvent with the new portion of the waste when the mass ratio is more than 1.0 but not more than 3.0, and this return is carried out repeatedly. The technical result consists in Skornyakova carbon as a commodity product. 2 C.p. f-crystals, 2 tab., 2 Il. The invention relates to the disposal of chemical waste and organic industrial and domestic waste rubber in the motor fuel and chemical raw materials, which can later be used as boiler fuel, bitumopodobnaya binder or raw materials for its production, carbon black or raw materials for its production, for electric arc furnaces, electrolysis baths, carbon-carbon materials (uum) for metallurgy and so on, and a small amount of hydrocarbon gas, which can be used as fuel.The problem of chemical processing various organic industrial and consumer polymer waste is very important due to the constant increase in the number of polluting nature.The solution to this problem allows us to solve the environmental problem of complex and harmless utilization of rubber-industrial and household waste, to broaden the base of hydrocarbons produced from oil, coal, oil shale, natural bitumen.There is a method of processing rubber waste in motor fuels and chemical raw materials, including termolizina (Termoli 27.07.95).In this way as a hydrocarbon solvent use waste from the production of synthetic rubber, taken in a mass ratio to the original rubber-waste, is 24:1, respectively, and the process of termowizyjne is carried out at a temperature of 270-420oC and pressures of 1 to 6 MPa.In addition, in one embodiment of the method, obtained after distillation of the liquid fraction with a boiling point above 200oPartly returned to the process as a Supplement to the original hydrocarbon solvent mass ratio of 15:10, respectively, and the remainder of the specified faction produce the target product.The advantage of this method is to simplify the technology and increasing the yield of light fractions with a boiling point up to 200oC.A limitation of this method is the use as solvents waste from the production of synthetic rubber, and waste are not always available in sufficient quantity.There is a method of processing organic polymer waste including termolizina waste at temperatures above 270oWith increased pressure at mere.05.2001).In this way when terveiseni waste use high pressure at least 6.1 MPa, and after distilling the liquid fraction with a boiling point of not less than 210oWith being in terveiseni again waste as an additional component to the solvent mass ratio of the additional component to the solvent is not less than 1:1.In embodiments, the implementation of this method terveiseni waste mass ratio of solvent and waste choose from 1:1 to 4.2:1. In addition, after distilling the liquid fraction with a boiling point of not less than 210oWith injected when the mass ratio of the additional component to the solvent is not less than 5:1.The advantage of this method is the use of an organic solvent alkylbenzene.The limitation of this method is the necessity of operating at high pressures of at least 6.1 MPa.The closest is a method of processing organic polymers, including rubber waste, including when run in the reactor termolizina waste in an organic solvent - alkylbenzene at temperatures above 270oC and pressures up to 6 MPa, separating the liquid fraction from the undissolved produite above 220o(Patent of the Russian Federation 2110535, C 08 J 11/04, publ. 10.05.98 year).In this way termolizina waste produced at a temperature of 270-420oC and a pressure of 1-6 MPa at a mass ratio of solvent and waste 24: 1, respectively, in the presence of a rare earth metal or intermetallic compounds based on rare-earth metals, or in the presence of titanium hydride, taken in an amount of 0.5-10% by weight of the reaction mixture, the solvent used alkylbenzene, such as toluene, xylene, dimethyl-trimethyl-tetramethylbenzene or mixtures thereof, or used as solvent, the product distilling crude benzol", the resulting high temperature coking coals, which allows you to speed up the processing of waste and to increase the yield of liquid products, as well as the content on the last fractions with a boiling point up to 200oC. Thus, the method allows to increase the degree of conversion of rubber and other organic waste.Limitations of the method are: - for effective termowizyjne (thermolysis) process is carried out in the presence of a rare earth metal or intermetallic compounds based on rare-earth metals, or in the presence of titanium hydride, taken in the selected catalysts and additives produced in the processing of securities of the target product - carbon black is a very complex; - low quality of carbon black due to the large amount of ash materials is a consequence of added solvent; high consumption of solvent in order to obtain high quality gasoline fraction.Solved by the invention of the task - simplifying technology, reduce energy consumption, reduce operating costs, increase functionality and improve the quality of the products.The technical result that can be obtained by carrying out the claimed process, accelerate and simplify technology, improving the performance of the process according to the output of high-octane gasoline fraction, obtaining carbon black as a commercial product.To solve the problem with the achievement of the technical result in a known method of processing rubber waste, including termolizina waste when you start in the reactor in an organic solvent at a temperature above 270oC and pressures up to 6 MPa, separating a liquid fraction from the undissolved product, the distillation process termowizyjne) liquid fraction on the fraction with a boiling point up to 220oWith and praktikado in an organic solvent is carried out at a temperature of 280435oC and a pressure of not less than 2.9 MPa when the mass ratio of organic solvent to waste more than 1.0, the liquid fraction with a boiling point up to 220oWith subjected to catalytic reforming, is subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220oTo use as the target product, and the other subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220oFrom use as a solvent (without adding to termolizina new portion of another organic solvent: alkylbenzene, gasoline fraction, a mixture of alkylbenzenes, etc. as it is in counterparts) and return on termolizina a new batch at a temperature 280-435oC and a pressure of not less than 2.9 MPa when the mass ratio of solvent to waste more than 1.0 received for a new batch of waste liquid fraction with a boiling point up to 220oWith subjected to catalytic reforming, is subjected to catalytic reforming for a new batch portion of the liquid fraction with a boiling point up to 220oTo use as the target product, and the other subjected to catalytic reforming portion of the liquid fraction of these modes termowizyjne and catalytic reforming continue for the next and subsequent batches of waste, when this return is subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220oWith termolizina for subsequent batches of waste.Possible additional embodiments of the inventive method, in which it is advisable to: - as an organic solvent (pad) used alkylbenzene and/or gasoline fraction with boiling points up to 220oC; is subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220oTo return to termolizina a new batch at a pressure in the range of not less than 2.9 MPanot more than 5 MPa at a mass ratio of solvent waste in the interval 1.0not more than 3.0.In the process termowizyjne rubber waste for the proposed method as the target products get: - a small amount of hydrocarbon gases (2.0 to 5.3 wt.%); - the fraction of light hydrocarbons, wikipaedia at a temperature of 60-220oWith; - the fraction of heavy hydrocarbons, wikipaedia at temperatures above 220oWith; - the carbon black in powder form.Light fraction of liquid hydrocarbons with a boiling point up to 220o<, and is a low viscosity (viscosity of gasoline) light yellow liquid with the odor of aromatics and unsaturated hydrocarbons, prehoneymoon usually within 60-220oC. the Concentration of aromatics - benzene and alkyl benzenes about 60 wt.% (see table 1, column 2).The heavy fraction of liquid hydrocarbons obtained by termowizyjne (thermolysis) of rubber, has a small (not more than 5 wt.%) the admixture of hydrocarbons light fraction and is a black viscous (consistency of light oil) liquid, solidifying within 0+5oC.Carbon black is the product of thermolysis rubber - lightweight pulverized powder, black, and engineering.As we know from the analogues, operating part of termowizyjne (thermolysis of terroristfree) is an alkylbenzene or a mixture of alkyl benzenes). Therefore, to activate the process of thermolysis is advisable to increase the concentration of aromatics in the solvent.This is achieved by vapor reforming light fraction of thermolysis with a boiling point up to 220oAfter separation of the liquid fraction from the undissolved product and distillation directly when termowizyjne liquid fraction.For this LM layer of the catalyst is high zeolite (ZSM-5, promoted 2% ZnO), at a temperature of 440-520o(See, for example, the patent of the Russian Federation 2130960). When the reformer can be used other known and various methods of obtaining vysokoavtomatizirovannyh gasoline fractions (see, for example, the patent of the Russian Federation 2039790).Thus, unlike known methods, the process of termowizyjne subsequent batches of waste carried out neposredstvenno only solvent resulting from the process of termowizyjne, and in order to activate termowizyjne subsequent batches of waste resulting from the distillation reactor termowizyjne light fraction with a boiling point up to 220oWith before you can use it as a solvent for termowizyjne subsequent batch is subjected to reforming. No need for scarce organic solvent to termowizyjne subsequent batches of waste, as well as other activators of thermolysis, such as rare earth metals, intermetallic compounds, titanium hydride and other substances.Carrying liquid product accumulated in the circulation of the light fraction of liquid hydrocarbons through the processes of reforming and termowizyjne is vysokoavtomatizirovannyh, isometries and used for the purpose of accumulating surpluses. Subjected to catalytic reforming of the remaining portion of the liquid fraction with a boiling point up to 220oTo return to termolizina next batch.Fig. 1 depicts a flow chart of the installation that implements the proposed method.Fig. 2 is a functional diagram of the pilot plant, which was used to determine the modes.In Fig. 1 schematically shows: thermolysis reactor 1, the node 2, the preparation and filing of rubber waste, the reactor 3 of the reformer, the cooler-condenser 4, a gas-liquid separator 5, a pump 6, a tubular furnace 7, the distribution device 9, distillation column 10.Depending on the type of incoming raw materials can carry out the preliminary preparation of raw materials (for example, shredding, separation from the sludge, and so on).The process of termowizyjne (thermolysis) rubber waste begins with the preparation of raw materials, such as worn tires. Rubber waste is washed, crushed and separated from the sludge I (steel, textiles, dirt) at node 2, and fed into the reactor 1 (conical) fluidized bed of crumb rubber and carbon black in a solvent in a state close to pseudocritical.
Stream IV is cooled and partially condensed in the cooler-condenser 4, is subjected to separation in a gas-liquid separator 5. The liquid fraction of light hydrocarbons V (flu) pump 6 serves in a tubular furnace 7 (fire heated), where it is heated to the temperature required for the implementation of the reforming reactor 3. If, for example, using a stationary layer of the reforming catalyst containing zeolite ZSM-5 promoted 2% ZnO (see, for example, the patent of the Russian Federation 2130960), in a tubular furnace 7 is heated flu V to a temperature of about 500oC, while the temperature of the flu V after reforming approximately 450oC.Then the product of the reformer is sent to the distribution unit 9 of the reactor 1 as a solvent.The carrying part of LFW is withdrawn from the circulating stream and sent to distillation column 10 at stabilizing the purpose of obtaining fractions of gasoline VI, gas separation VII and stabilization VIII (use as fuel Torah 1 remove the remains of the steel cord IX.In Fig. 2 schematically shows: thermolysis reactor 1 (electronegativity, sealed) with a bag of glass or guledani for rubber crumb or larger fragments tires, reactor 3 zeolite reforming catalyst, the cooler-condenser 4 vapor products of thermolysis (water), gas-liquid separator 5, the gas meter 16, thermometers 17, gauge 18, a measuring container 19 for the light fraction of liquid hydrocarbons, a measuring tank 20 for heavy fraction products, the sampler 21, an adjustable valve 22, the valves 23, the electric heaters 24.The experiments were conducted in the following sequence.In the bag of the reactor 1 with a volume of 12 l put the fragments of tires or crumb rubber waste. Fill the reactor 1 solvent. Produce heating of the inner volume of the reactor 1 to a temperature of 280350oWith, while maintaining the pressure at 2.55.0 MPa. Further, the temperature rise continues due to the exothermic reaction termowizyjne (thermolysis). Depending on the mass relations of waste to organic solvent (pad) or the solvent in the liquid light hydrocarbon fractions in the quality of the t expansion and evaporation of the solvent and formation of hydrocarbon gas, the pressure increases to 2.55.0 MPa and maintained at a given level of 2.55.0 MPa by resetting part of the vapor of organic solvent and gas through the reactor 3 of the reformer, the cooler-condenser 4, a gas-liquid separator 5 and the valve 22. The quantity of hydrocarbon gas gas meter register 16. The temperature and pressure in reactors 1 and 3 are registering thermometers 17 and a pressure gauge 18.Termination temperature increase in the reactor 1 means the end of the process termowizyjne (thermolysis). After a fifteen-minute excerpts pressure in the system dropped to atmospheric. During the entire duration of the experience gas meter 16 register number neskondensirovannyh gas - product of thermolysis. Liquid product (light liquid fraction NC - 220o(C) from the gas-liquid separator 5 is poured into the measuring container 19. After cooling the reactor 1 it lasermedizin, remove and weigh the carbon black in the bag. Poured a heavy fraction of liquid hydrocarbons into the measuring tank 20. The reaction products from the volumetric tanks 19 and 20 and the sampler 21 is subjected to analysis to determine their composition. Part of the faction PC - 220oWith subjected to reforming, used as dissolve the ATA previous experience of the solvent (light fraction, subjected to reforming). The results of reforming solvent are summarized in table 1, third column.The results of experiments to determine modes termowizyjne are summarized in table 2.Table 2 gives the possibility to evaluate the influence of mass ratio solvent: rubber, temperature, pressure and composition of the solvent on the quality and yield of products:
III - carbon black in powder form selected from the reactor 1 by pneumatic transport,
IV - vapor fraction of light hydrocarbons with a boiling point up to 220oC.
- the ratio of solvent:rubber, equal 0,774 led to clumping of carbon black due to the high temperature acceleration process due to the exothermic heat of reaction at low heat capacity of the products of thermolysis and the lack of solvent for carrying out subsequent operations termowizyjne (table 2, experiment 1);
- the ratio of solvent:rubber, equal of 0.93 (table 2, experiment 2), gave the output quality of the target product, but almost light fraction is enough only to receive the solvent for re-termowizyjne, and the result is a very small part of the target product gasoline fraction with a boiling point up to 220oC. Experience shows that there is no possibility to get at least a significant part of the target product is high - octane gasoline fraction, so it is advisable to use the ratio of solvent:rubber more and to maintain the circulation of a large quantity of solvent increasing apparatus reactors 1,3 as thermolysis and reforming process, so that the ratio whiter than 3 unprofitable;
- at a temperature of 260oC and below (experiment 12), and at a pressure of 2.5 MPa or less (table 2, experiments 5, 11) reaction termowizyjne is not, the rubber swells in the solvent but does not dissolve;
- when using a solvent, is not subjected to the reforming stage of the return light fraction on termolizina, sharply increased losses (table 2, experience 13).Table 1 shows the results of chromatographic analysis of the light fraction products obtained by terveiseni rubber to reforming (table 1, column 2) and after (table 1, column 3). The content in the active alkyl benzenes, respectively, 60 and 80 wt.%. Reforming converts paraffin, Naidenova and unsaturated hydrocarbons to aromatics (arkinventory).In table 2 the results of the experiments confirm the high efficiency of termowizyjne (thermolysis) rubber at a temperature of from 280 to 435oC and a pressure of not less than 2.9 to 5 MPa, which corresponds to the parameters close to pseudocritical, for a mixture of light hydrocarbons liquid fraction of thermolysis with a boiling range from NC to 220oC. As can be seen from table to excessive energy costs.For reference: critical parameters of alkyl benzenes:
- toluene Pkr= 4.0 MPa, tkr= 320,8oWith,
- metaxalona Pkr= 3.5 MPa, tkr= 346,0oWith,
- ethylbenzene Pkr= 3,7 MPa, tkr= 346,4oAnd so onThe process starts termowizyjne produce using organic solvent, such as any technical alkylbenzene or a mixture of alkyl benzenes and the fraction with a boiling point up to 220oC. In the absence of alkyl benzenes may use any gasoline fraction with a boiling point up to 220oWith or other organic solvents capable of dissolving in the process of thermolysis rubber. Spend a few cycles termowizyjne so that the composition of the solvent for subsequent operations stabilized due to the formation of new portions of rastvoritelei gradual translation of the original organic solvent selected part (surplus) light fraction.With a limited amount of alkylbenzene and lack of it for the starting volume of organic solvent, as research has shown, you can add any straight-run gasoline. So, to start the process was used straight-run gasoline with an aromatic content of coal which was sirvaluse at the level of 80%. In another case, to start the process was used toluene in a mixture with straight-run gasoline. In the multiple circulation of the contents of alkyl benzenes also increased to 80%.Most successfully claimed a method of processing rubber waste is industrially applicable in the chemical processing in motor fuels and chemical raw materials of various rubber materials, mainly tires.
1. A method of processing rubber waste, including termolizina waste when it starts in an organic solvent at a temperature above 270°C and pressures up to 6 MPa, separating a liquid fraction from the undissolved product, the distillation liquid fraction, characterized in that the distillation liquid fraction is carried out on the fraction with a boiling point up to 220°C and at a fraction with a boiling point above 220°C, when running termolizina party waste in an organic solvent is carried out at a temperature of 280 - 435°C and a pressure of not less than 2.9 MPa when the mass ratio of organic solvent to waste more than 1.0, the liquid fraction with a boiling point up to 220°C is subjected to catalytic reforming, is subjected to catalytic reforming portion of the liquid francome the reforming portion of the liquid fraction with a boiling point up to 220°C is used as a solvent and return to termolizina a new batch at a temperature of 280 - 435°C and a pressure of not less than 2.9 MPa when the mass ratio of solvent to waste more than 1.0 not more than 3.0, obtained for a new batch of liquid fraction with a boiling point up to 220With subjected to catalytic reforming, is subjected to catalytic reforming for a new batch portion of the liquid fraction with a boiling point up to 220To use as the target product, and the other subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220°C again used as a solvent and return to termolizina next shipment of waste, the process on the specified modes termowizyjne and catalytic reforming continue for the next and subsequent batches of waste, when this return is subjected to catalytic reforming portion of the liquid fraction with a boiling point up to 220°C, respectively again at termolizina for subsequent batches of waste.2. The method according to p. 1, characterized in that when you run as an organic solvent used alkylbenzene and/or gasoline fraction with boiling points up to 220C.3. The method according to p. 1, characterized in that subject was pushing the party of waste at a pressure in the range of not less than a 2.9 - not more than 5 MPa.
FIELD: methods of processing of the industrial and domestic wastes.
SUBSTANCE: the invention is dealt with the methods of processing of the industrial and domestic wastes and may be used in mechanical rubber industry, housing and communal services, a fuel and energy complex and in petrochemical industry for production of raw materials and fuel resources. The method of processing of a waste rubber includes their thermal decomposition in a furnace, separation of the decomposition products into solid and gaseous, extraction of a liquid phase from the light-end products and withdrawal of the latter for incineration to maintain the process of the thermal decomposition. The waste products before their thermal decomposition are mixed with 2 ч 15 mass % of water. Commixing of the waste products with water is performed by the water spraying in the furnace in an amount of 50 ч 150 % from the weight of the waste products. At that the solid products of decomposition are spraying with water in an amount of 10 ч 20 % against the mass of the waste rubber.
EFFECT: the invention ensures processing of a waste rubber to produce the raw materials and fuel resources.
1 cl, 1 dwg
FIELD: method for production of epoxypolymer solution useful sealing material in building industry.
SUBSTANCE: claimed epoxypolymer solution contains (mass parts): epoxydyanic resin 100; polyethylene polyamine 15; plasticizer 50; filler 200. Waste from epoxide resin production is used as plasticizer, and waste from haydite production is used as filler. Epoxypolymer solution of present invention is useful, for example as sealing and waterproofing material in rebuilding of damaged concrete and reinforced concrete constructions.
EFFECT: epoxypolymer solution with improved operating characteristics and reduced cost.
5 tbl, 8 dwg
FIELD: alternate fuels.
SUBSTANCE: invention relates to a plant for reusing oil-containing wastes obtained from washing of oil storage tanks to produce secondary fuel. Plant has caisson for stratification of pollutants, waste-supply pumps, conduits with shutoff gate valves to discharge finished product, cleaning solution, and sludge. Plant is further provided with second caisson for purifying spent oil and heated third caisson to prepare stratifying solution, which caisson has bubbling pump, and, connected to both caissons, ejector mixer for mixing stratification agent with water and valve gate positioned between caissons. Bubbling pump is connected to first and second caissons through conduits with shutoff gate valves and first and second caissons are connected through shutoff gate valves to third caisson and to mixer for mixing purified mazut with purified motor oil, which mixer is provided with outlet tube for finished product.
EFFECT: achieved high quality of cleaning tanks by repetitive use of cleaning solution and leading to production of secondary fuel.
SUBSTANCE: method comprises grinding organic agents, heating without air access first in the chamber for removing moisture and then in the chamber for pyrolysis, and condensing portion of vapor phase to provide liquid fuel. The device comprise grinder, charging-batching device, chamber for removing moisture, chamber for heat treatment (pyrolysis), separating device and condensing device. The charging-batching device is provided with a pickup detecting the moisture of organic agent. The pickup is mounted upstream of the chamber for removing moisture and is connected with the signal converter.
EFFECT: enhanced efficiency.
4 cl, 6 dwg
FIELD: waste disposal.
SUBSTANCE: invention is dealing with processing of petrochemical production wastes and, more specifically, with utilization of sludges formed in production of polyethers. A method is provided residing in that sludge is treated with extractant followed by separation into liquid and solid phases. Invention is characterized by using water or aqueous solution of potassium phosphates as extractant. In the latter case, solid phase is composed of bentonite and liquid one emulsion of a polyether on aqueous potassium phosphate solution. Liquid phase is separated in separator into polyether and aqueous phase. The former is dried and filtered and the latter subjected to crystallization and subsequent drying of potassium phosphates.
EFFECT: increased recovery of polyethers and utilized previously rejected waste.
FIELD: artificial land mixtures.
SUBSTANCE: processing of brown slime is accomplished by mixing it with additive, namely preliminarily ground foamed urea plastic, in amount 5-20% of the weight of brown slime. Method makes it possible to be implemented directly on deposit without need of creating storage earthen container. Material can be used to restore oil-polluted earth and water reservoir areas to strengthen road slopes and drilling sites.
EFFECT: simplified artificial land making technology.
FIELD: detoxification methods.
SUBSTANCE: invention relates to oil and gas industry and can be used in other industry fields where long-term storage and accumulation in slime collectors of considerable amount of oil-containing waste containing liquid and/or pasty hydrocarbons. Detoxification method involves supplying, into mixer, burnt lime and a modifier, namely technical-grade fat, amount of which constitutes 5% of the weight of the burnt lime. Thereafter, supplied materials are spread across all the length of the mixer and waste containing less than 50% liquid and/or pasty hydrocarbons is added to the mixer in amount that waste-to-burnt lime weight ratio would be between 1:1 and 1:2. Resulting mixture is mixed and water is introduced to slake lime. Thus obtained mix is conveyed from mixer to mix purification unit.
EFFECT: lowered waste danger class and improved environmental condition with respect to dust, light hydrocarbon fractions, and organosulfur compounds.
FIELD: petrochemical industry; rubber industry; other industries; methods of production of the rubber compound on the basis of the chloroprene rubber.
SUBSTANCE: the invention is pertaining to the field of rubber industry, in particular, to the method of production of the rubber compound on the basis of the chloroprene rubber, which is characterized by the heightened adhesiveness metrics. Production of the rubber compound on the basis of the chloroprene rubber includes mixing of magnesium oxide, zinc oxide, the stearic acid and carbon. At that during the mixing process additionally introduce the modifying agent, which has been preliminary produced as a result of interaction of the epoxy dianresin -ED-20 with the vat wastes of the residue of phenylamine production in the mass ratio of 2:1 at 150°С within 5 hours. At that the vat waste contain 15-18 mass share of phenylamine. The vulcanizates of the rubber compound based on the chloroprene rubber are characterized by the improved physical-mechanical metrics and the heightened adhesion to the metal. The method allows to salvage of the phenylamine (other name aniline) - the waste of the petrochemical industry.
EFFECT: the invention ensures production of the rubber compound based on the chloroprene rubber characterized by the improved physical-mechanical metrics and the heightened adhesion to the metal.
FIELD: waste treatment.
SUBSTANCE: waste stream contains at least titanium tetrachloride, optionally one or more common electron-donors, and at least one titanium (halo)alkoxide of formula TiXx(OR)z, where X represents halogen, R alkyl, preferably lower alkyl with number of carbon atoms from 1 to 10, x=0-3, z=0-3, and 2= (x+z) =4. Treatment of waste stream comprises heat treatment under conditions, which are selected such as to provide treatment product represented be wastes in the form of discrete particles at temperature 20°C.
EFFECT: increased degree of recovery of recycled valuable minerals, reduced amount of waste, and mitigated its danger.
13 cl, 6 ex
FIELD: rubber-processing industry.
SUBSTANCE: method of elastomer destruction includes preliminary grinding and phased destruction and homogenisation in single-screw disperser separated by process zones which are connected with transportation areas. Water is introduced into the first process zone in the amount of 2-15 mass.% from rubber weight. Rubber is destructed in the first zone under the pressure being decreased as long as material flows. Then, it is transported while material is re-circulated. Temperature in the first zone is maintained at a level of dissipation heating temperature not exceeding 250°C. Final destruction takes place in the second process zone at heating temperature not exceeding 300°C.
EFFECT: decrease of plasticity properties in produced regenerate.
1 dwg,1 tbl