JP2012255591A - Steam treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treatment device allowing an organic substance to be subjected to a steam treatment in accordance with an object such as sterilization, heating treatment, desiccation and carbonization treatment in a solid-liquid condition by forming a heating region by a heating heater, and a cooling region from a treatment chamber to a discharge side of a treatment object while bringing the treatment chamber into a reduction atmosphere under low oxygen by supplying steam into the treatment chamber.SOLUTION: In this tunnel type treatment chamber where an input port and a discharge port for a treatment object are opened, a transport conveyer is arranged to pass through a tunnel type treatment chamber, the inside of the tunnel type treatment chamber is supplied with steam by a steam supply means, and a heating heater is arranged in the inside separated from the discharge port of the treatment chamber at a predetermined distance.

Description

The present invention relates to an apparatus for heating, drying and carbonizing an organic substance.
If organic substances are vegetables and fruits with high water content, they can be cooked, meat-based foods can be cooked like grilled meat, and roasted beans and grains such as green coffee beans. Processing like roasting is possible.
In addition, if the organic substance is a food such as kaki or rice cracker, it can be dried, and if it is a liquid food, it can be sterilized.
Furthermore, if the organic material is wood or bamboo, only the surface or the entire surface can be carbonized.
In addition, organic waste can be reduced in volume by carbonization.

Techniques for drying or carbonizing organic raw materials using superheated steam obtained by heating saturated steam to a high temperature are known.
For example, in Patent Document 1, the organic raw material is dried by a first rotary kiln, carbonized by supplying superheated steam to the second rotary kiln, and cooling using steam for the discharge part of the second rotary kiln. Disclosed is a technology that prevents self-combustion by providing a part.
However, the carbonization apparatus disclosed in the publication is composed of two rotary kilns, and the process is complicated, and a dry distillation gas mixed with steam must be burned at a high temperature.

JP 2004-263193 A

  According to the present invention, an organic substance is solidified by providing a heating area by a heater and a cooling area on the delivery side of an object to be processed from the processing chamber while supplying a reducing atmosphere under low oxygen by supplying steam into the processing chamber. It aims at providing the processing apparatus which enabled the steam processing according to the objective, such as sterilization, heat processing, drying, and carbonization processing, according to a liquid state.

  The steam processing apparatus according to the present invention is a tunnel-type processing apparatus in which an input port and a carry-out port for an object to be processed are opened, a transport conveyor is disposed so as to pass through a tunnel-type processing chamber, and the tunnel type This processing chamber is characterized in that steam is supplied to the inside by a steam supply means and a heater is provided in the inside at a predetermined distance from the carry-out port of the processing chamber.

  Here, if the product to be treated is an organic substance, regardless of whether it is liquid or solid, by adjusting the temperature and treatment time of the steam treatment, the process of sterilization in the liquid state will heat the food with high water content. Processing according to the purpose is possible from cooking, drying and carbonization.

Conventionally, saturated steam or superheated steam is simply injected into the processing chamber, so that the steam hits the processing object, and the temperature of the steam immediately decreases to become water in many cases.
On the other hand, the present invention is characterized in that a heating chamber such as a sheathed heater or an IH heater is provided in the processing chamber using steam to maintain the processing chamber heated to about 150 ° C. to 400 ° C.
In addition, a tunnel-type processing chamber is used in which an input port through which a workpiece is input into the processing chamber by a conveyor and an exit port from the processing chamber to the outside are opened, with a predetermined distance from the exit port. When a heater is provided inside, the following effects occur.
In this tunnel-type processing chamber, the heater has a heating zone where the steam is heated to a predetermined temperature, but there is no heating heater on the carry-out side of the heating zone, and the steam in the processing chamber is heated. Without being cooled, it is discharged to the outside through the opened outlet, so that a cooling zone is formed in this portion.
As a result, the entire processing chamber is maintained in a reducing atmosphere of low oxygen by steam, and on the carry-out side, the processed product is cooled and transported by the steam whose temperature has decreased.

The following effects can be obtained by setting the tunnel-type processing chamber in an environment such as steam.
For example, when green coffee beans are put into the processing chamber by a conveyor, roasting with steam and heater is performed in the heating zone, and it is carried out outside in a state cooled to about 150 ° C. or less with steam in the cooling zone. The roasting is completed without being oxidized, and it is possible to extract a coffee with a fruity taste without the bitterness due to oxidation.
For example, when wood or bamboo is put into the processing apparatus according to the present invention, dry distillation proceeds in a reducing atmosphere with heated active steam, and the dry distillation gas generated at this time is also decomposed with active steam.
Accordingly, the carbonization process is possible at a low temperature of 250 ° C. to 500 ° C., and the cooling is performed to a temperature at which no self-combustion occurs on the carry-out side.
As a result of repeated experiments and examinations by the present inventors, there was no tar content in the processing chamber, almost no unpleasant odor was generated, and carbonization was possible.

The inventors were even more surprised by repeating the experiment. When the meat was added, the meat was cooked with high-temperature steam, so that the meat was baked without being reduced, and the potatoes were also baked.
Fruits such as baked apples could also be baked.
Furthermore, the liquid food also exhibited a bactericidal action.

The steam supplied into the processing chamber is heated to 150 ° C. to 500 ° C., preferably 200 ° C. to 400 ° C. with a heater in the processing chamber. To 250 ° C. to 600 ° C. may be supplied into the processing chamber.
In addition, a ceramic body that emits far infrared rays may be disposed in the processing chamber.
Ceramic bodies are easy to obtain as ceramic balls.
For example, Tomuro stones in Ishikawa Prefecture emit a lot of far-infrared rays by applying superheated steam.
Ceramic balls can be obtained by powdering silicon ore such as Tomuro stone and then sintering to a predetermined size.
Moreover, if it is an ore which radiates | emits far infrared rays, there will be no limitation in kind.

  The steam treatment apparatus according to the present invention is a wide range of treatments such as sterilization, cooking, drying, and carbonization of organic substances depending on the purpose, even in a tunnel type conveyor type treatment apparatus by a combination of active steam and a heater. Is possible.

The structural example of the processing apparatus which concerns on this invention is shown. An example of a cross-sectional structure of a tunnel portion is shown.

As shown in FIGS. 1 and 2, the processing apparatus 10 according to the present invention includes a transport conveyor 14 that loads and unloads an object to and from a processing chamber 11 a and a tunnel section 11 that covers the center of the transport conveyor 14. It is configured.
The conveyor 14 is made of a metal such as mesh-like or mesh-like SUS.
In the example of FIG. 1, the conveyor is stretched by rollers 14 a to 14 h, and is slowly transported and moved by a driving roller 14 f that is chain-coupled 18 a to the motor 18.
The tunnel portion 11 is opened only at the inlet 12 and the carry-out port 13, and other portions are in a sealed state, and a wall portion is formed with a heat insulating material as necessary.
A steam supply pipe 15, a ceramic body 16, and a heater 17 are disposed below the conveyor in the center in the front-rear direction of the processing chamber 11 a in which the tunnel portion 11 is formed.
The steam supply pipe 15 is provided with a plurality of nozzle holes so as to spray toward the ceramic body 16 and the heater 17 below the support rail 11 c of the conveyor provided in the tunnel portion 11.
As shown in FIG. 1, the steam supplied to the steam supply pipe 15 is saturated steam generated by the steam generator 21 controlled to be supplied by the water level gauge 21a, and then 250 ° C. by a coil heater, a sheathed heater or the like. It has become steam heated to superheated steam at ~ 600 ° C.
The steam and the heated steam are controlled by the temperature detectors 21b and 22a, respectively.
As shown in FIG. 2, a ceramic body 16 such as a ceramic ball is supported by a mesh-like support 16a.
The heater 17 may be a sheathed heater or an IH heater, and this embodiment is an example in which three sheathed heaters 17a, 17b, and 17c are arranged.

Heater 17 as shown in FIG. 1 is disposed in a generally central portion in the longitudinal direction of the tunnel portion 11, which is temperature controlled by a temperature sensor H _T and the power supply E.
Range with a heater 17 in the central portion of the processing chamber 11a forms a heating zone L _H, the carry-out port 13 side from the heating zone L _H have become vapor from the carry-out port 13 is spontaneous emission, this time the temperature of the steam is in the cooling zone L _C which falls below about 0.99 ° C. to.
In the present embodiment, the steam is spontaneously discharged not only from the carry-out port 13 but also from the inlet 12 and is in a low oxygen state due to the steam over the entire length of the processing chamber 11a.
Between the heater 17 to the inlet 12 have a preheating zone L _P, and a balance of vapor emission, has the same length and L _C and L _P.

Next, examples in which various kinds of organic substances are processed by the processing apparatus 10 according to the present invention will be described.
Length of about 100cm heating zones _{L H,} set to 30cm long cooling zone _{L C,} while detecting the temperature in the heating zone _{L H} of the processing chamber 11a at detector T (11b), set at about 250 ° C. did.
The temperature of the superheated steam was set to 480 ° C to 500 ° C.
Moreover, the panel part by a heater was about 300 degreeC.

  Next, each experiment was performed by changing the processing time under the conditions of the apparatus.

The coffee beans were processed by setting the processing time from the inlet 12 to the outlet 13 to about 10 minutes.
As a result, good roasted coffee beans were obtained. When coffee was added using the roasted beans, a fruity-flavored coffee was obtained.

When the processing time was set to 7 minutes and the meat for grilled meat was processed with a skewer, cooking could be performed without reducing the volume.
It was also confirmed that there was a bactericidal action.

  When processing time was set to 7 minutes and raw sweet potatoes were added, the result was close to that of baked potatoes.

When wood and bamboo were added for a treatment time of about 20 minutes, no tar content was observed and the carbonized material came out from the carry-out port.
When the treatment time was about 10 minutes, reinforced wood in a state where only the surface of the wood was carbonized black was obtained.

  When the treatment time was about 1 minute and the rice cake was added, the subsequent moisture absorption of the rice cake was suppressed, and the dry state was maintained over a longer period of time than before.

  When raw soybeans were added at a treatment time of about 3 minutes, the beans were obtained in a steamed state.

10 processor 11 tunnel portion 11a the processing chamber 12 inlet 13 outlet port 14 transfer conveyor 15 the steam supply pipe 16 ceramic body 17 heater 21 steam generator 22 steam superheating unit _{L C} cooling zone _{L H} heating zone _{L P} preheating zone

Claims (3)

A tunnel-type processing apparatus having an input port and a carry-out port for a product to be processed,
Place the conveyor to pass through the tunnel-type processing chamber,
The tunnel type processing chamber is supplied with steam by a steam supply means, and has a heater in the interior at a predetermined distance from the outlet of the processing chamber.   The steam processing apparatus according to claim 1, wherein the steam supplied into the processing chamber is superheated steam.   The steam processing apparatus according to claim 1, wherein a ceramic body that radiates far infrared rays is disposed in the processing chamber.

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