KR950005679B1 - Process for producing fuel oil and gas by treatment of rubber waste - Google Patents

Abstract

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Description

Fuel oil and gas production process by waste rubber cracking

The present invention relates to a fuel oil and gas production process by waste rubber cracking, which is configured to produce fuel oil and gas by cracking waste rubber using a suitable catalyst under specific temperature and pressure conditions, and to recycle waste rubber in the process. It is about.

Rubber products are widely used in industry because of their unique properties. In addition, the rubber industry has been widely developed around the world, and waste rubber that is not decomposed by microorganisms has accumulated, causing pollution problems.

Although there are many processes for treating waste rubber, the most common process is to crack the waste rubber using a suitable catalyst under certain conditions.

Because it can solve pollution problems and produce useful fuel oils and gases.

However, this cracking process usually requires a long cracking time and a fairly high cost, so it was not practical to use such a conventional cracking process to treat waste rubber.

Compared with many other production processes, the present invention relates to a process that can produce fuel oil and gas by cracking waste rubber in a shorter reaction time than any conventional production process, and can solve economic problems at low cost. . Currently available rubbers can be classified into two types.

1. Natural rubber

A. Natural rubber is made of latex from rubber plants; In the first place, natural rubber is concentrated by weight percent of raw rubber of about 94%.

B. This raw material rubber is hydrocarbon of the following formula.

2-methyl-1, 3-butadiene or isoprene

C. It is then refined into second raw rubber, softened between 130 ° and 140 °, melted at 200 ° C. and completely decomposed at 270 ° C.

2. Synthetic rubber

A. Synthetic rubber is produced by the polymerization and catalysis of petroleum.

B. It is classified into dienes, olefins, sulfide compounds, organic dilicon compounds, fluorine compounds, esters and vinyl compounds.

Dienes (BR1 SBR, NBR rubber) and olefins (IIR1 EPM, EPDM rubber) are known to have a faster reaction rate and greater economic efficiency than others.

The majority of dienes are 1, 3-butadiene and isoprene.

The majority of olefins are isobutylene, ethylene and propylene.

The materials currently used for tire and wire insulators are mainly natural or synthetic rubber. (In the latter case, dienes or olefins are preferred.)

These components are formulated in various ways depending on the particular application.

Additives such as antiagers, preservatives, fillers, colorants, and the like may also be incorporated into the rubber product.

Rubber production is primarily a process of polymerization and copolymerization.

I. Polymerization

II. Copolymerization

This compound forms -C-carbonium as a result of the affinity of the π bond group to the electrons, thereby reacting more rapidly with free radicals to polymerize and copolymerize.

It is therefore an object of the present invention to provide a new process for treating waste rubber.

It is another object of the present invention to provide a new process for producing fuel oil and gas by cracking waste rubber with suitable catalysts under certain temperature and pressure conditions.

Another object of the present invention is a new process for producing fuel oil and gas by rubber cracking with the reaction of waste rubber with a predetermined catalyst, wherein the catalyst consists of CaO, Ni, XT-10, trace amounts of Nb and Ti. To provide.

The waste rubber and catalyst are slowly heated, softened at about 230 ° C. and stirred at about 280 ° C. for 1 hour.

The pressure in the reactor is increased to 2 kg / cm 2. The resulting product is then filtered and concentrated to classify each reservoir as light oil, heavy oil, gas.

Other objects and features of the present invention will become apparent from the following detailed description. And the characterizing features of the invention are particularly indicated in the appended claims, which form part of the invention.

The present invention relates to a process for producing fuel oil and gas by cracking waste rubber by reacting waste rubber at a ratio of about 40 and about 3 catalysts in a reactor.

The catalyst is composed of weight percent CaO 15% -25%, nickel 40% -60%, XT-10 20% -40% and trace amounts of Nb and Ti, where XT-10 is one or more mixtures of the groups as follows: : Polomite, Garbbro, Microcline, Muscovite, Tourmaline, Talc, Graphite-silkymicaschist, Sinite, lenslimestone, Sacharoidal-limestone, magnetite, shihui, shihuishi, citu. Preferably the catalyst is composed of 20% CaO, 50% Ni, 30% XT-10 and a small amount of Nb and Ti by weight percentage.

First, the catalyst and waste rubber are gradually heated, softened at about 230 ° C., and stirred at about 280 ° C. for 1 hour. The pressure in the reactor is increased to about 2 kg / cm 2. The gas products are then filtered, condensed and classified into diesel, heavy oil and gas in each reservoir.

The total reaction time is about 2 hours. For reference, the components of the catalyst used herein are shown in Table 2 below.

TABLE 2

The cross-catalysts, the main catalyst and the subcatalyst, increase the formation of free radicals, reducing the active energy (Eac) and speeding up the reaction.

In addition, under the conditions of the predetermined reaction temperature and by the catalytic means, the carbon bonds are broken at appropriate positions and rearranged to complete the cracking of the rubber. Hereinafter, embodiments of the present invention will be described in detail.

EXAMPLE

400 kg of waste rubber to which 30 kg of the catalyst was added was placed in a reactor and slowly heated to 230 ° C. At this time, the mixture softens and melts.

Then stir the mixture at 280 ° C. for 1 hour. When the temperature rises to 320 ° C, CO ₂ is initially released followed by fuel gas. At the same time, the pressure in the reactor is increased to 2 kg / cm 2, and the gas product is filtered and concentrated and then classified into light oil, heavy oil, and gas into each reservoir.

The total reaction time is 2 hours.

[result]

[Reactants & Products Table]

In the cracking process of the present invention, cracking of the rubber is completed within 2 hours using a specific catalyst. Although the invention has been described as preferred embodiments, it will be apparent that many modifications are possible by those skilled in the art.

Accordingly, the invention is intended to embrace modifications within the scope of the spirit of the invention as defined in the appended claims.

Claims (5)

In the process of producing fuel oil and gas by rubber cracking, the catalyst is composed of CaO, Ni, XT-10, trace amounts of Nb and Ti, and the XT-10 is made of chromite, gabro, microclean, Consists of a mixture of one or more of the following groups: Muscobite, Tourmaline, Talc, Grepite-Silky Maicasist, Sinite, Lance Limeston, Saccharoidal-Limestone, Magnetite, Sea Huy, Sea Huy, and Sea Reaction process by the ratio of about 40 waste rubber of a reactor and about 2-6 catalysts; The catalyst and waste rubber are gradually heated, softened at 230 ° C., stirred at 280 ° C. for about 1 hour, and the pressure of the reactor is increased to about 2 kg / cm 2; And, the fuel oil and gas production process by waste rubber cracking comprising the step of collecting the gas product thus formed. The process of claim 1, wherein the gas product is further filtered, condensed, and classified into light oil, heavy oil, and gas in each reservoir. 2. The process of producing fuel oil and gas by waste rubber cracking according to claim 1, wherein the total reaction time is about 2 hours. The method of claim 1, wherein the catalyst is composed of 15% -25% CaO by weight, 40% -60% Ni, 20% -40% XT-10, and trace amounts of Nb and Ti. Fuel oil and gas production process. The fuel oil and gas production process according to claim 4, wherein the catalyst is composed of 20% CaO, 50% Ni, 30% XT-10 and a small amount of Nb and Ti by weight percentage.