JPS59193989A - Preparation of organic fuel - Google Patents

Abstract

PURPOSE:To obtain an organic fuel having improved characteristics, economic efficiency, and utility as a fuel, by heating and melting an organic solid material having self-burning by heat of combustion of the solid material, removing floating carbon. CONSTITUTION:When an organic material such as polyethylene, etc. having self- burning is burned in the interior of the combustion bucket 7, the organic material for forming paraffin wax material is heated and melted by its heat of combustion to cause thermal decomposition reaction. The melted paraffin wax reaction product B is sent to the bucket 11 for promoting thermal decomposition, the thermal decomposition reaction is accelerated, a combustible hot gas obtained by vaporizing partially the reaction product during the reaction is returned to the combustion bucket 7 to give combustion energy. Floating carbon is removed from the paraffin wax melt B after promotion of the thermal decomposition, so that an organic fuel is purified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing organic fuel from organic solids such as polyethylene.

Organic solids 9 that have self-combustibility, such as polyethylene resin, can be used in various containers by utilizing their properties.

It is widely used for a variety of purposes, including electric wire covering materials, pipe materials, and other packaging materials. When these various polyethylene products deteriorate over time and become used,
Conventionally, polyethylene has been disposed of by pelletizing it to produce recycled polyethylene or by incinerating it.

However, since recycling processing of used polyethylene products requires a large amount of energy and expensive machinery and equipment, the manufacturing cost of recycled polyethylene is rather high, making it difficult to put it to practical use. Incinerating polyethylene products as is is a waste of valuable resources, which is inconvenient in terms of resource reuse and utilization, and there is also a large economic loss due to the disposal of resources. At the same time, when various polyethylene products are incinerated, harmful gases are generated and there is even a risk of secondary pollution. At present, a method for effectively regenerating it has not yet been developed.

The present invention aims to provide a method for producing an organic fuel that utilizes used polyethylene and other organic solids and has excellent properties, economy, and usefulness as a fuel, A self-combustible organic solid is burned inside a combustion chamber, and the combustion heat is used to heat and melt the organic solid for forming a paraffin wax-like substance to cause a thermal decomposition reaction, resulting in a molten paraffin wax-like substance. The product is sent into a pyrolysis promotion basket to promote a pyrolysis reaction, and a part of it is vaporized during the reaction and the generated flammable high-temperature gas is returned to the combustion basket to be used as thermal energy for combustion, The gist of the present invention is a method for producing an organic fuel obtained by removing floating carbon from the paraffin wax-like melt after accelerated thermal decomposition.

A more detailed description of the method for producing organic fuel according to the present invention is as follows.

Regarding polyethylene, which was used as an example of an organic solid material having self-combustibility, in general, even if non-crosslinked and low-crosslinked polyethylene is ignited, it will only melt locally at the ignition point and its surroundings. Then, this molten material covers the unignited parts of the polyethylene and prevents combustion. It has a so-called self-extinguishing property. Therefore, in order to thermally decompose or burn this type of polyethylene, it is necessary to separately apply thermal energy from the outside.

On the other hand, hyperlinked polyethylene has self-combustion properties in that it continues to burn once it is ignited, and its combustion temperature can reach approximately 900° C. or higher.

The present invention utilizes the properties of organic solids having self-combustion properties such as polyethylene.2 For example, as a means for heating polyethylene to the necessary temperature to form a waxy wax-like product melt, Highly cross-linked polyethylene with self-combustion ability (combustion polyethylene) is used, and as polyethylene for pyrolysis to be used to form a paraffin wax-like product, high-crosslinked polyethylene with self-combustion ability is used. Of course, non-crosslinked or low-crosslinked polyethylene, or a mixture of any combination thereof can also be used.

Therefore, first of all, the apparatus directly used in implementing the manufacturing method according to the present invention will be described as shown in FIG.

(1) is a fireproof housing, (2) is a housing (1
) A tank for receiving paraffin wax-like melt that is suspended inside and configured to be airtight, (3) (4) and (5) are outlet ports, (6) is an adjustment port for air introduction, (7) The refractory combustion basket (8) is a raw material receiving tray, (9) is a large number of holes provided in the raw material receiving tray (8), and (10) is numerous air introduction holes provided on the peripheral wall of the combustion basket (7). hole, (11) is a fire-resistant pyrolysis promotion basket;
(12) and (13) are the aforementioned Basquera for promoting thermal decomposition)
Hole provided in (11).

(14) is a chute for feeding raw materials, (15) is a window,
(16) is a flue.

In the above configuration, 1. For example, when producing paraffin wax-like powder fuel from solid polyethylene, first, a mixture of self-combustible polyethylene and pyrolytic polyethylene is used as the raw material (A), This raw material (A) is charged into the combustion basket (7) via the raw material input chute (14). Furthermore, this raw material (A)
The same applies even if the fuel is polypropylene, styrene, or other organic solids having self-combustible properties.

Raw material (A) stored inside the combustion basket (7)
When the combustible polyethylene, which has self-combustibility, is ignited, the combustible polyethylene starts to burn, and the thermal energy causes the pyrolytic polyethylene to burn at the same time, continuing the combustion state and causing a pyrolysis reaction.

A few minutes after the start of combustion, the raw material (A) melts and becomes a liquid paraffin wax-like melt (B), which is separated from the nonflammable appendages of the various polyethylene products used as raw materials and transferred to the raw material receiving tray (8). The pyrolysis particles pass through the numerous holes (9) and the gap between the raw material receiving tray (8) and the inner circumferential wall of the combustion basket (7) and fall in the form of drops, and are located directly below the combustion basket (7). It is temporarily stored in the promotion basket (11).

After a while, the paraffin wax-like melt (B) dropped into the inside of Basquela l-(11) for promoting thermal decomposition passes through the many holes (12) in the bottom wall of the basket, and becomes a paraffin wax-like melt. The material falls dropwise and is stored at the inner bottom of the material receiving link (2).

The paraffin wax-like melt (B9 (C)) temporarily stored inside this tank (2) and in the basket (11) for promoting thermal decomposition is kept in a boiling molten state while floating in the air inside the tank (2). It combines with oxygen to promote the thermal decomposition reaction, and since the inside of the tank (2) is in an oxygen-deficient state when cold due to the above-mentioned combustion or thermal decomposition reaction, during the thermal decomposition reaction of the melt, A part of it vaporizes and generates a large amount of flammable high-temperature gas (G).The high-temperature gas (G) generated from inside the tank (2) rises inside the tank (2).

The basket (11) passes through numerous mesh-like holes (13) provided on the peripheral wall of the basket (11) for promoting thermal decomposition.
11) and also into the pyrolysis accelerating basket (
11) The high-temperature gas generated from inside rises as it is, and then enters the inside of the combustion basket (7) from the bottom direction through each hole (9) of the raw material receiving tray (8).

As a result, inside the combustion basket (7),
A large amount of flammable high-temperature gas is sent from the bottom direction (
G), thermal energy from self-combustion of combustion polyethylene, and numerous air introduction holes (1) on the peripheral wall of the basket (7).
Oxygen in the air, which is sent in from 0), etc., act in a correlated manner, and the primary combustion and thermal decomposition reactions are synergistically promoted. That is, the combustible high-temperature gas (G) is sent into the combustion basket (7) from the bottom direction.

This is because when it combines with the oxygen in the air fed through the air introduction hole (10) of the basket (7), it combusts instantly.

As if the peripheral wall of the combustion basket (7) is equipped with a burner heating means, flames are generated from each air introduction hole (lO) to effectively heat the inside of the combustion basket (7). Inside the basket (7), a large flame (F) spreads over the whole area and rises directly above. Since the flame is generated from the peripheral wall of the combustion basket (7) in this way, there is no leakage of gas from the air introduction holes (10). Therefore, inside the combustion basket (7), the raw material (A) is newly supplied one after another.
Since extremely large combustion heat energy is given to the raw material (A), the combustion effect on the raw material (A) is extremely large, and a continuous combustion action is reliably guaranteed even without separately supplying combustion heat energy.

Moreover, the paraffin wax-like melt (B) inside the basket (11) for promoting thermal decomposition combines with a small amount of atmospheric oxygen inside the tank (2) to promote the thermal decomposition reaction.

Therefore, inside the tank (2) and for promoting thermal decomposition)
(11) Since the interior etc. become oxygen deficient and under negative pressure, the paraffin wax-like melt inside the combustion basket (7) is promoted to fall, and the paraffin wax-like melt inside the tank (2) is kept at a low temperature. Since it is in a boiling state, it is in an atmosphere that easily vaporizes, generating a large amount of flammable high-temperature gas (G) and paraffin wax-like melt (
The thermal decomposition reaction of B) is further promoted.

Then, air is introduced in order to maintain an appropriate oxygen-deficient state inside the tank (2), to maintain the internal temperature of the melt (C) in the tank (2) at a constant high temperature, and to maintain the above-mentioned atmosphere in which the melt is easily vaporized. An appropriate amount of air is introduced through the air adjustment port (6).

Incidentally, the boiling point of the paraffin wax-like melt is as follows.

Although the temperature is approximately 460°C in the atmosphere, it is approximately 220 to 230°C under negative pressure inside the tank (2), and the molten material ('C) in the tank (2) is always in a low-temperature boiling state. It is in.

Next, after extracting the molten paraffin wax-like product (C) which has been sufficiently thermally decomposed as described above from the outlet (3), (4) or (5) of the tank (2), or from the tank ( Within 2).

Carbon floating in the paraffin waxy melt is removed by electrostatic induction.

The paraffin wax-like melt purified in this way constitutes an organic fuel, and this organic fuel is
It has a low flash point and has the property of being easily ignited due to its phosphorus size, and as a result of a calorific value test, it has a heating value of approximately 12,000 cal.
There was a calorific value of /g.

The organic fuel is produced as heavy oil or crude gasoline (naf'''+) depending on the amount of carbon removed from the paraffin wax melt, Regarding its uses, it can be used as a fuel for boilers, ceramics, gold-N refining, steel manufacturing, internal combustion engines, etc. in the single heavy oil type, and as fuel for various engines in the gasoline type.

As described above, according to the method for producing organic fuel in the form of paraffin socks according to the present invention, various polyethylene products that have been used and were conventionally discarded can be produced.

Since useful organic fuels are produced from polypropylene products, styrene products, other self-combustible organic solids, and organic solids for forming paraffin wax-like substances, resource regeneration is realized.

Furthermore, by taking advantage of the self-combustible properties of polyethylene, the combustion heat is used to heat and melt organic solids such as polyethylene for forming paraffin wax-like substances to cause a thermal decomposition reaction. New thermal energy is generated through combustion in the combustion basket due to the combination of the flammable high-temperature gas generated during the promotion of the pyrolysis reaction and oxygen in the air, and this thermal energy is used to increase the raw material charged into the combustion basket. This method does not require any separate thermal energy supply during combustion and thermal decomposition during the production of organic fuels, resulting in an enormous energy-saving effect and, in conjunction with the resource recycling mentioned above. It exhibits remarkable effects such as extremely large economic benefits.

Incidentally, the combustion and thermal decomposition treatment of polyethylene etc. in the manufacturing method shown above is carried out in the atmospheric atmosphere, but this treatment can also be carried out in a closed container, and the combustion and thermal decomposition treatment in the atmospheric atmosphere is also possible. Regarding processing, a combustion furnace for burning polyethylene and a pyrolysis furnace for pyrolysis polyethylene and the like are configured separately and treated separately.

It is also possible to adopt a configuration in which combustion heat of polyethylene for combustion or the like is introduced into the pyrolysis furnace to burn and thermally decompose the polyethylene or the like in the pyrolysis furnace.

[Brief explanation of the drawing]

The figure is a longitudinal cross-sectional view of an apparatus used to carry out the present invention. (2) is a tank for receiving paraffin wax-like melt;
(6) is the adjustment port for air introduction, (7) is the combustion basket, (8) is the raw material tray, (9) (10) (
12) (13) is a hole, and (II) is a basket for promoting thermal decomposition.

Claims (1)

[Scope of Claims] 1. A self-combustible organic solid is burned inside a combustion basket, and the combustion heat is used to heat and melt the paraffin wax-like rent-forming organic solid to cause a pyrolysis reaction. The molten paraffin wax-like product is fed into the pyrolysis promotion basket to promote the pyrolysis reaction, and the flammable high-temperature gas generated when a part of it vaporizes during the reaction is sent to the combustion chamber. A method for producing an organic fuel, characterized in that the paraffin wax-like melt is recycled to provide thermal energy for combustion, and the paraffin wax-like melt is purified into an organic fuel by removing floating carbon from the paraffin wax-like melt after pyrolysis promotion. 2. The method for producing an organic fuel according to claim 1, wherein polyethylene is used as the organic solid material. 3. The method for producing organic fuel according to claim 1, wherein polypropylene is used as the organic solid. 4. The method for producing an organic fuel according to claim 1, wherein styrene is used as the organic solid. 5. The method for producing an organic fuel according to claim 1, wherein the carbon suspended in the paraffin wax-like melt is removed by electrostatic induction.