JPH11256168A - Charcoal and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain charcoal capable of avoiding disposal of hard tack, eliminating expense required for disposal and effectively utilizing hard tack whose shelf life passed and useful as portable fuel, activated carbon, graphite, or the like., by baking hard tack. SOLUTION: This charcoal is obtained by baking hard tack. For example, the charcoal is obtained by housing block B of hard tack in a baking furnace 5 and igniting fuel chip 5 packed in the furnace 5 and baking the block B at 700-1,000 deg.C furnace temperature and 0.2-0.1 mmHg furnace pressure for 20-30 hr. The charcoal has a nearly similar shape to that before baking and the volume contracts to about 3/5 and, when the charcoal is burned, the charcoal has readily available advantages due to scarce smell, unlike conventional charcoal made of wood.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing charcoal from dry bread as a preserved food and to charcoal produced from dry bread.

[0002]

2. Description of the Related Art In general, prefectures and municipalities in Japan store a large number of dry breads in warehouses as emergency food and prepare to distribute them to the people and citizens as food in the event of an earthquake.
However, the dry bread as such a preserved food has a limitation of a storage period (about 5 years), and has been disposed of after the storage time has elapsed.

[0003]

However, discarding such a large amount of dry bread is wasteful and expensive.

[0004] Therefore, an object of the present invention is to make effective use of a dried bread whose storage period has passed.

[0005]

According to the present invention, a dry pan is steamed in a steaming pot.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and examples of the present invention will be described below with reference to the drawings.

In FIG. 1, several dry breads 1 for emergency use are stored as blocks B in a paper bag 2 which is stacked and burned. Conventionally, a plastic packaging bag was used in place of the paper bag 2, but if it is a plastic bag, it must be removed when steaming.
It is preferable to use a paper bag because the block can be steamed as it is.

The dry pan has a substantially rectangular shape, and blind holes 3, 3... 3 are formed at predetermined intervals throughout the bread.

The block B of such a dry pan is housed in the steaming furnace 5, and the fuel chips 5 filled in the furnace are ignited and baked. After ignition of the fuel chip, about 2
After about 4 hours, the temperature in the furnace reaches about 800 ° C., and the steaming is completed in about 25 hours. The pressure inside the furnace is 0.2mmHg
~ 0.1 mmHg is preferable, and the temperature in the furnace is 700 ~
1000 ° C. is preferable, 800 ° C. is more preferable and 20 to 30 ° C.
Good time steaming. Thus, the charcoal 10 in a black dry bread shape as shown in FIG. 3 can be manufactured. This charcoal 10
Has a shape almost similar to the shape before baking, and its volume is reduced to about 3/5.

[0010] The charcoal produced in this way can be used as it is as a portable fuel, activated carbon (powder or solid) and graphite, and especially when combusted, has less odor and is easy to use, unlike wood charcoal. .

[0011]

The present invention is configured as described above.
There is an effect that the dry bread for storage which has been discarded can be effectively used.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a block of a dry bread before steaming.

FIG. 2 is an explanatory diagram of a state in a steaming furnace.

FIG. 3 is a perspective view of charcoal after steaming.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Dry bread 2 ... Paper bag 5 ... Steam furnace 6 ... Fuel chip 10 ... Charcoal

[Procedure amendment]

[Submission date] March 26, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

Claims (2)

[Claims] 1. Charcoal made by steaming a dry bread. 2. A method for producing charcoal, wherein the dry bread is steamed in a steaming furnace at 700 to 1000 ° C.