• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A process for perishing waste rubber materials, especially worn out motor vehicle rubber tires by recovering their components for industrial purposes wherein waste rubber material is admixed to the charge matter for the blast furnace and loaded together with the charge matter into the blast furnace. As a result of physical and chemical processes going on in the blast furnace the supplied waste rubber material gets decomposed and the so obtained components have a favorable effect on the pig iron manufacturing process.
    公开号:SU721009A3
    申请号:SU782597399
    申请日:1978-04-05
    公开日:1980-03-05
    发明作者:Брезнаи Эндре
    申请人:Endre Breznai；
    IPC主号:
    专利说明:

    The invention relates to a method for the destruction of rubber waste, in particular worn-out automobile tires. '
    Closest to the described ® invention according to the technical essence and the achieved results is a method of blast furnace smelting using organic waste [1].
    A concomitant phenomenon of economic development is an increase from year to year around the world in the amount of rubber waste, mainly due to worn-out tires. Because you can not not take into account the natural decay of objects made of rubber, which creates the danger of environmental pollution, the elimination of these decay products stano- "vitsya important task of protection surrounding m conductive medium.
    There are various methods of destruction and reuse “in the industrial production of rubber waste.
    In accordance with one of the known methods, rubber products are crushed by mechanical crushing plants, in order to remove tex · ^.
    gaskets, they are exposed.
    / chemical processing to obtain crushed material, is used in construction or for other purposes as an auxiliary material.
    According to this method, grinding of these materials has recently been hindered due to the increasing use of metal and cord elements in tire manufacturing (for example for radical tires), the high cost of chemical treatment and, finally, the economic and quantitative limitations of the recycling of the resulting crushed rubber material . ·
    In industrialized countries, waste-recycled rubber used in the manner described above accounts for only 1-2% of the total annual amount of waste rubber.
    The crushing and recycling of rubber waste has not yet been decided from an economic point of view.
    Known methods do not provide complete economic destruction of waste rubber and reuse in industrial production of valuable substances contained in rubber. Use as additives cannot be considered reuse, since iron, carbon contained in rubber, and similar hydrocarbons in industrial processes are not used.
    The rubber industry, in contrast to the paper, textile and metal processing and many other industries, is an industry in which excess waste cannot be recycled as raw material.
    The problems associated with the disposal of rubber '5 wastes consist mainly in the fact that the volume of investments in the known methods used is incommensurable with the cost of the funds used for these purposes. 20
    The aim of the invention is to provide a method by which waste rubber waste can be disposed of economically and essentially without additional capital investment, and, in addition, the valuable substances contained in the rubber can be reused advantageously in the industrial production process.
    The essence of the invention is jg that the chemical and physical processes that occur during the smelting of cast iron in a blast furnace are also suitable for the decomposition of waste rubber, and that the substances released from these j waste as a result of pyrolytic decomposition are essentially identical to substances contained therein and injected into the blast furnace, and therefore the addition of rubber waste does not adversely affect the course of the iron smelting process.
    In accordance with the proposed ’method, rubber wastes are mixed with raw materials loaded into a blast furnace, and then the blast furnace is charged with this mixture. Rubber waste is involved in processes occurring in a blast furnace, and compounds that occur when they decompose under the influence of temperature have a favorable effect on the smelting of cast iron, described in more detail below. .....
    To simplify the additive and to ensure uniform passage of the rubber waste into the DBM 55 furnace, it is preferable to grind the rubber waste mechanically. It is advisable that the weight of each piece does not exceed 2 kg, and it is particularly preferred that it is between 0.3 and 1 kg. fifty
    Because in a blast furnace from rubber.
    40-60 wt.% of carbon is formed of new waste, which is added to the initially loaded amount: coke, the amount of coke containing 55 state in the charge and / or the amount of liquid fuel added can be reduced so that the amount of carbon generated It will be quite enough.
    In a specific example of the method, due to the use of the heat of combustion of the combustible blast furnace gas generated from the rubber waste, the amount of combustible gas consumed in the blast furnace air heaters is reduced.
    In order that no interference occurs during the smelting of cast iron, the amount of rubber waste mixed with the mixture, based on the amount of cast iron smelted, is set to no more than 20%. The proportions of the feed material are more dependent on the quality of iron ore and the quality of other feed materials; the optimal value within the specified limits should be established experimentally.
    The advantages of the method according to the invention are that rubber waste is reused in the production process, which ensures an economical operation of the blast furnaces, and that the method does not require special investments. In industrialized countries, there is a whole network of metallurgical enterprises located however not too far from each other, which ensures the organization of the collection of rubber waste in relatively small areas (in the vicinity of metallurgical enterprises). Thanks to this, transportation and storage costs are significantly reduced.
    Since the smelting of cast iron significantly exceeds the production of rubber in quantity, it should be noted that to solve the problem, on average, laying 10% of rubber waste in relation to the volume of cast iron is sufficient. This means that the existing metallurgical enterprises will not require any additional investments to destroy the emerging rubber waste.
    The main problem, namely, pollution of the environment by rubber waste, can be solved simply and simultaneously economically, by the method according to the present invention.
    The invention is described in more detail using a specific embodiment.
    The drawing is a schematic sectional view of a blast furnace.
    After collection, rubber waste is prepared for transportation.
    The preparation consists of mechanical crushing, in which rubber waste is crushed into pieces weighing from 0.3 to 1 kg. After grinding, the waste can be fed into the blast furnace by means of vehicles. The crushed rubber waste is fed to the mixing platform of the blast furnace and discharged there.
    After this, the rubber waste enters the device preparing the mixture for loading the blast furnace, while no special processes are required for its processing.
    Material for loading is prepared in a mixing device. At the same time, rubber waste is mixed with other components of the mixture.
    Loading, mixtures refers to the normal blast furnace workflow. In this case, rubber wastes mixed with the loading material turn out to be in the confined space of the blast furnace. On the top 1, forming the initial part of the working zone of the blast furnace, rubber waste together with other components of the loading mixture are heated and pyrolytic decomposition of rubber begins at a temperature of 200-300 ° C.
    Then this process takes place in shaft 2, after heating the mixture to a temperature of 500-700 ° С, the decomposition of rubber ends. The following decomposition products appear from rubber waste (in the case of waste from ordinary worn-out tires): steel, carbon, hydrocarbons with different chain lengths, but mainly methane, and in addition, carbon dioxide, carbon monoxide, hydrogen and hydrogen sulfide. The gaseous decomposition is mixed with the blast furnace gas of the blast furnace and removed from it together with the blast furnace gas through a gas outlet. Solid components or decomposition products are moved down to the mixture of the mixture and are involved in the smelting process.
    • Steel particles, which are components of rubber waste, absorb carbon, melt and turn into blast furnace iron, which, together with the rest of the iron, from melting aeon 3 falls into the shoulders 4.
    Carbon formed from rubber waste, just like coke is involved in the recovery process, ore and at the same time produces energy.
    The ratio of the components of the process 'flowing' in a blast furnace without the addition of rubber waste and with them can be represented as follows:
    1) without the addition of rubber waste, the following raw materials are required to produce one ton of cast iron:
    tons of ore of medium quality, tons of metallurgical coke (with a sulfur content of about 1%),
    0.5 tons of slag-forming additives (limestone); .
    2) with the addition of rubber waste to obtain one ton of cast iron, the following raw materials are required:
    tons of medium quality ore
    0.95 tons of metallurgical moxa (with a sulfur content of about 1%),
    0.5 tons of slag-forming additives (limestone),
    0.1 tons of rubber waste (with an iron content of about 10%, 'with a sulfur content of about 1%, and steel from Rubber Waste increases the amount of cast iron from 1 ton to 1.01 tons).
    This comparison shows that with the addition of 10% rubber waste, 5% less coke is required, and at the same time, the amount of cast iron smelted increases by 1%. The decrease in coke consumption is explained by the presence of carbon formed as a result of pyrolytic decomposition of rubber. The fuel consumption for a blast furnace is therefore reduced from 1: 1 to 1.01: 0.95.
    The ratios given as an example may vary depending on the quality of the ore, the ratio of the components of the rubber waste mixture and its composition, and the amount of fuel required for the blast furnace is reduced in each case.
    The heat of combustion of the generated blast furnace gas as a result of the addition of hydrogen released from rubber waste and hydrocarbon increases by about 7-8%. Energy (natural gas) for heating blast furnace air heaters can be accordingly reduced.
    Assume that a blast furnace of medium capacity can be provided with the continuous use of rubber waste in an amount of 10% with respect to cast iron. In this case, with an annual output of 300,000 tons of cast iron by the method according to the invention, 30,000 tons of rubber waste can be recycled annually in a blast furnace. Thanks to this, the annual production of pig iron will increase by 30,000 tons, coke consumption will decrease by 15,000 tons, and in addition, approximately 5% savings in combustible gas are ensured.
    These digital data prove that through the proposed method, rubber waste, still considered to be worthless and polluting the environment, are industrial raw materials that are of great importance without additional investment.
    权利要求:
    Claims (1)
    [1]
    1. USSR author's certificate 317103, c. 21 21 5/00, 1971.
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    同族专利:
    公开号 | 公开日
    DD138094A1|1979-10-10|
    IT7868860D0|1978-08-07|
    FR2400425B1|1984-01-27|
    PL209048A1|1979-07-02|
    DE2810313B1|1978-10-19|
    ES472419A1|1979-03-16|
    FR2400425A1|1979-03-16|
    CS241461B2|1986-03-13|
    JPS5440882A|1979-03-31|
    GB2003188A|1979-03-07|
    YU195178A|1982-06-30|
    GB2003188B|1982-06-16|
    PL121666B1|1982-05-31|
    HU173806B|1979-08-28|
    US4175949A|1979-11-27|
    ATA161978A|1979-06-15|
    IN148666B|1981-05-02|
    BR7805142A|1979-04-24|
    AT354374B|1979-01-10|
    DE2810313C2|1985-02-21|
    CA1108863A|1981-09-15|
    CS526878A2|1985-08-15|
    NL7808021A|1979-02-19|
    SE7808604L|1979-02-16|
    AU3855278A|1980-02-07|
    AU523635B2|1982-08-05|
    BE869742A|1978-12-01|
    LU79999A1|1978-12-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH247195A|1945-08-02|1947-02-28|A Fossati Leone|Method of producing combustible gas.|
    BE788362A|1971-09-15|1973-01-02|Held Gmbh|PROCESS FOR THE EXTRACTION OF METALS FROM LOW-GRADE ORE AND METALS THUS OBTAINED|
    DE2202903B1|1972-01-21|1972-11-30|Karwat Ernst Dr Ing|Process for the disposal and recycling of waste material for motor vehicles|
    GB1405294A|1972-07-27|1975-09-10|Ass Portland Cement|Conversion of refuse|
    US3812620A|1973-03-22|1974-05-28|Gen Electric|Apparatus and process for segregating and decomposing heterogeneous waste materials|
    US4078914A|1973-05-30|1978-03-14|Louis Gold|Gasification of coal and refuse in a vertical shaft furnace|
    US3890141A|1973-11-15|1975-06-17|Firestone Tire & Rubber Co|Conversion of scrap rubber to fuel and useful by-products|
    US4014681A|1974-06-11|1977-03-29|Rhinehart Paul E|Vehicle recycling process|
    DE2624971C2|1976-06-03|1982-08-26|Dyckerhoff Zementwerke Ag, 6200 Wiesbaden|Process for the recovery of industrial waste|
    DE2637330A1|1976-08-19|1978-02-23|Kloeckner Humboldt Deutz Ag|Burning cement clinker - using granulated rubber waste, e.g. old tyres, as auxiliary fuel for supplying heat|DE2831827A1|1978-07-20|1980-02-07|Metallgesellschaft Ag|METHOD FOR DIRECT REDUCTION IN TURNTUBE|
    FR2449521B1|1979-02-21|1983-02-18|Gagneraud Francis|
    NL8800775A|1988-03-28|1989-10-16|Brown John Eng Constr|PROCESS FOR DESTRUCTION OF ORGANIC WASTE MATERIALS BY COMBUSTION.|
    US4889556A|1988-08-01|1989-12-26|Westinghouse Electric Corp.|Method of recycling steel belted tires|
    EP0374308A1|1988-12-07|1990-06-27|Ghislain Daigle|Method for the incineration and recycling of wastes and dangerous toxic wastes|
    DE4123028C1|1991-07-12|1992-10-29|Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    US5244490A|1992-05-07|1993-09-14|General Motors Corporation|Iron making method using waste polymer material|
    US5322544A|1992-05-29|1994-06-21|Nucor Corporation|Melting a mixture of scrap metal using scrap rubber|
    US5380352A|1992-10-06|1995-01-10|Bechtel Group, Inc.|Method of using rubber tires in an iron making process|
    DE4317968C2|1993-05-28|1995-10-26|Voest Alpine Ind Anlagen|Process for the production of molten pig iron from lumpy iron ore|
    DE4402025A1|1994-01-20|1995-07-27|Eko Stahl Gmbh|Treating and utilising carbon-bearing residues contaminated with harmful substances|
    PL380708A1|2006-09-28|2008-03-31|Impexzłom Spółka Jawna J. Gul & U. A. Stankiewicz Zakład Pracy Chronionej W Upadłości Likwidacyjnej|Large-furnace charge reducing agent|
    EP1908564A1|2006-10-02|2008-04-09|Fiday Gestion|Method of reclaiming used tires and product based on used tires|
    ES2757583T3|2007-05-07|2020-04-29|Newsouth Innovations Pty Ltd|Improvements in the production of ferroalloys|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    HUBE001305|HU173806B|1977-08-15|1977-08-15|Method for destroying rubber wastes particularly waste auto tyres with industrial reusing of components|
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