JPH0248281B2 - BEIKOKUNOSENJOHOHOTOSONOSOCHI - Google Patents
BEIKOKUNOSENJOHOHOTOSONOSOCHIInfo
- Publication number
- JPH0248281B2 JPH0248281B2 JP26558489A JP26558489A JPH0248281B2 JP H0248281 B2 JPH0248281 B2 JP H0248281B2 JP 26558489 A JP26558489 A JP 26558489A JP 26558489 A JP26558489 A JP 26558489A JP H0248281 B2 JPH0248281 B2 JP H0248281B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- tank
- rice
- pressure
- adsorbent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 162
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 81
- 239000001569 carbon dioxide Substances 0.000 claims description 81
- 241000209094 Oryza Species 0.000 claims description 55
- 235000007164 Oryza sativa Nutrition 0.000 claims description 55
- 235000009566 rice Nutrition 0.000 claims description 55
- 239000003463 adsorbent Substances 0.000 claims description 47
- 238000005406 washing Methods 0.000 claims description 40
- 238000000926 separation method Methods 0.000 claims description 37
- 235000013339 cereals Nutrition 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000001568 sexual effect Effects 0.000 claims 1
- 239000003925 fat Substances 0.000 description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- 239000003921 oil Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- JARKCYVAAOWBJS-UHFFFAOYSA-N hexanal Chemical compound CCCCCC=O JARKCYVAAOWBJS-UHFFFAOYSA-N 0.000 description 2
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N pentanal Chemical compound CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、加圧された液状あるいは超臨界状態
の二酸化炭素を用いて米穀から脂肪、臭気成分等
を除去するための米穀の洗浄方法とその装置に関
するものである。Detailed Description of the Invention "Industrial Application Field" The present invention relates to a rice grain washing method for removing fat, odor components, etc. from rice grains using pressurized liquid or supercritical carbon dioxide. This is related to the device.
「従来技術とその問題点」
特公昭55−16200号公報において、液状二酸化
炭素を用いて植物性物質から油脂を分離する方法
が提案されている。この方法は、植物性物質を液
状の二酸化炭素中に浸漬して植物性物質から油脂
を抽出し、ついで油脂を含有した液状の二酸化炭
素を取り出し、この油脂含有二酸化炭素を圧力を
保持しながら加熱し、または減圧し、あるいは加
熱・減圧を同時に行うことにより油脂を抽出、分
離しようとするものである。"Prior art and its problems" Japanese Patent Publication No. 16200/1983 proposes a method of separating fats and oils from vegetable substances using liquid carbon dioxide. This method extracts fats and oils from the plant material by immersing it in liquid carbon dioxide, then extracts the liquid carbon dioxide containing fats and oils, and heats the carbon dioxide containing fats and oils while maintaining pressure. The purpose is to extract and separate fats and oils by heating and reducing pressure, or by heating and reducing pressure simultaneously.
ところが、この方法では、低揮発性成分を容易
に分離できるものの、高揮発性成分が二酸化炭素
中に残るため、二酸化炭素を循環再使用すると、
抽出残査（油脂が抽出された残りの植物性物質）
の品質が悪化する不満があつた。 However, although this method can easily separate low-volatile components, high-volatile components remain in the carbon dioxide, so if carbon dioxide is recycled and reused,
Extraction residue (remaining vegetable matter from which fats and oils have been extracted)
There were complaints that the quality of the products had deteriorated.
また、特開昭49−52806号公報には、液状二酸
化炭素を用いた脂肪および油の脱臭方法が提案さ
れている。この方法は、加圧された液状二酸化炭
素に脂肪、油を溶解させて臭気成分を抽出し、つ
いでこの加圧された液状二酸化炭素を吸着剤で処
理し臭気成分を分離して二酸化炭素を循環再使用
しようとするものである。 Furthermore, Japanese Patent Application Laid-Open No. 49-52806 proposes a method for deodorizing fats and oils using liquid carbon dioxide. In this method, fats and oils are dissolved in pressurized liquid carbon dioxide to extract odor components, and then this pressurized liquid carbon dioxide is treated with an adsorbent to separate the odor components and the carbon dioxide is recycled. It is intended to be reused.
ところが、この方法にあつては、液状二酸化炭
素に微量溶解する脂肪、油によつて吸着剤の劣化
が促進されるうえ、これら脂肪、油は揮発性が低
いので、吸着剤の再生も困難である欠点があつ
た。 However, with this method, the deterioration of the adsorbent is accelerated by trace amounts of fat and oil dissolved in liquid carbon dioxide, and since these fats and oils have low volatility, it is difficult to regenerate the adsorbent. There was a certain drawback.
「問題点を解決するための手段」
本発明にあつては、加圧して液状あるいは超臨
界状態にあつた密度が700Kg／m3以上に保持され
た二酸化炭素を米穀に接触せしめてこれを洗浄
し、米穀中の脂肪、臭気成分等を除去するととも
に、前記洗浄に使用した後の二酸化炭素を600
Kg／m3以下の密度とし、まず前記洗浄によつて二
酸化炭素中に溶解した脂肪等の低揮発性成分を相
分離せしめ、ついで気化している二酸化炭素を吸
着剤層に導いて二酸化炭素中に残存する臭気成分
等の高揮発性成分を吸着分離して捕集し二酸化炭
素を回収することによつて、前記問題点の解決を
図つた。"Means for Solving the Problems" In the present invention, pressurized carbon dioxide, which is in a liquid or supercritical state and has a density of 700 kg/m 3 or more, is brought into contact with rice grains to wash them. In addition to removing fat and odor components from the rice grains, the carbon dioxide used for washing is
The density is below Kg/m 3 , and low volatile components such as fat dissolved in carbon dioxide are first phase-separated by the washing, and then the vaporized carbon dioxide is guided to an adsorbent layer and dissolved in carbon dioxide. The above-mentioned problem was solved by adsorbing and separating highly volatile components such as odor components remaining in the fuel and recovering carbon dioxide.
また前記米穀の洗浄方法を実施する洗浄装置と
しては、米穀を処理する米穀投入口と取出口が設
けられた耐圧洗浄槽と、この耐圧洗浄槽に連結さ
れて二酸化炭素を加圧して供給する二酸化炭素供
給装置と、前記耐圧洗浄槽に連結され耐圧洗浄槽
より排出される二酸化炭素中に抽出された低揮発
性成分を分離するための減圧弁および／あるいは
加熱手段を配した分離機構と、さらに該分離機構
と連設して分離機構より導出される二酸化炭素中
に含まれる高揮発性成分を除去する吸着剤槽とで
構成された装置が好適である。 The washing equipment for carrying out the rice washing method includes a pressure washing tank equipped with a rice input port and a rice removal port for processing the rice, and a carbon dioxide gas connected to the pressure washing tank and supplying pressurized carbon dioxide. a carbon supply device, a separation mechanism connected to the pressure washing tank and equipped with a pressure reducing valve and/or heating means for separating low volatile components extracted into carbon dioxide discharged from the pressure washing tank; Preferably, an apparatus is constructed of an adsorbent tank that is connected to the separation mechanism and removes highly volatile components contained in the carbon dioxide discharged from the separation mechanism.
「作用」
米穀と接触したあと二酸化炭素の密度が下げら
れると、二酸化炭素は気化し低揮発性成分は液体
の状態で残り両者は互いに相分離するので、脂肪
等の低揮発性成分を除去できる。ついで気化して
いる二酸化炭素を吸着剤槽に導くと二酸化炭素中
に残存する臭気成分等の高揮発性成分が吸着剤に
吸着されて捕集されるので、二酸化炭素は低揮発
性成分も高揮発性成分も含まれない清浄な状態と
なる。"Effect" When the density of carbon dioxide is lowered after coming into contact with rice grains, the carbon dioxide evaporates and the low-volatile components remain in a liquid state.The two phase separate from each other, making it possible to remove low-volatile components such as fat. . Then, when the vaporized carbon dioxide is introduced into an adsorbent tank, highly volatile components such as odor components remaining in the carbon dioxide are adsorbed and collected by the adsorbent, so that carbon dioxide also contains low-volatile components and high-volatile components. It becomes a clean state that does not contain any volatile components.
また吸着分離処理の前段で相分離処理を行う
と、予め低揮発性成分を除去することができるの
で、低揮発性成分が吸着剤に吸着されるのを回避
できる。吸着剤に吸着されている成分が高揮発性
のものであれば、吸着剤を容易に再生できる。 Further, if the phase separation treatment is performed before the adsorption separation treatment, the low-volatile components can be removed in advance, so that the low-volatile components can be prevented from being adsorbed by the adsorbent. If the component adsorbed on the adsorbent is highly volatile, the adsorbent can be easily regenerated.
「実施例」
以下、図面を参照して本発明の米穀の洗浄方法
とその装置を詳しく説明する。"Example" Hereinafter, the method and apparatus for washing rice grains of the present invention will be described in detail with reference to the drawings.
（実施例 １）
第１図は、米穀の洗浄装置の第１実施例を示す
もので、図中符号１は耐圧洗浄槽である。この耐
圧洗浄槽１には二酸化炭素供給装置（以下、供給
装置と記す）２と分離機構３がそれぞれ連設され
ている。分離機構３には吸着剤槽４が連設されて
おり、この吸着剤槽４は上記供給装置２に連設さ
れている。(Example 1) FIG. 1 shows a first example of a rice washing apparatus, and the reference numeral 1 in the figure is a pressure-resistant washing tank. A carbon dioxide supply device (hereinafter referred to as a supply device) 2 and a separation mechanism 3 are connected to the pressure washing tank 1, respectively. An adsorbent tank 4 is connected to the separation mechanism 3, and this adsorbent tank 4 is connected to the supply device 2.
耐圧洗浄槽１は、米穀を投入する投入口と処理
された米穀を取り出す取出口が設けられた耐圧容
器によつて形成されている。この耐圧洗浄槽１の
上部には、供給装置２に接続する管路２ａが連設
されており、その下部には分離機構３に接続する
管路３ａが連設されている。 The pressure-resistant washing tank 1 is formed of a pressure-resistant container provided with an input port for inputting rice grains and an output port for taking out the treated rice grains. A pipe line 2a connected to the supply device 2 is connected to the upper part of the pressure-resistant washing tank 1, and a pipe line 3a connected to the separation mechanism 3 is connected to the lower part thereof.
上記供給装置２は、二酸化炭素を加圧し液状あ
るいは超臨界状態にして耐圧洗浄槽１に供給する
ものである。この例では供給装置２が冷却器２ｂ
とポンプ２ｃとによつて構成され、管路２ａを介
して耐圧洗浄槽１と連設されている。この供給装
置２は、二酸化炭素を700Kg／m3以上の密度で供
給し得るものであることが望ましい。 The supply device 2 is for supplying carbon dioxide to the pressure cleaning tank 1 by pressurizing the carbon dioxide and converting it into a liquid or supercritical state. In this example, the supply device 2 is the cooler 2b.
and a pump 2c, and is connected to the pressure-resistant cleaning tank 1 via a conduit 2a. This supply device 2 is desirably capable of supplying carbon dioxide at a density of 700 kg/m 3 or more.
上記分離機構３は、耐圧洗浄槽１を通過した二
酸化炭素中に抽出されたグリセライドを主成分と
する脂肪等の低揮発性成分を分離するもので、こ
の例の装置にあつては、耐圧洗浄槽１側から順次
連設された減圧弁３ｂ、加熱器３ｃ、分離槽３ｄ
によつて構成されている。減圧弁３ｂおよび加熱
器３ｃは、耐圧洗浄槽１から送り出されてくる液
状あるいは超臨界状態の二酸化炭素の密度を低下
させるもので、減圧弁３ｂと加熱器３ｃを通過し
た二酸化炭素溶媒の密度は通常600Kg／m3以下と
される。また、分離槽３ｄはトラツプ様のもの
で、密度の低下した二酸化炭素中から相分離した
脂肪等の低揮発性成分を除去するものである。こ
の分離槽３ｄの下部には、分離された低揮発性成
分を取り出す取出口（図示せず）が設けられてい
る。 The separation mechanism 3 separates low-volatile components such as fats, whose main component is glyceride, extracted from the carbon dioxide that has passed through the pressure washing tank 1. A pressure reducing valve 3b, a heater 3c, and a separation tank 3d are successively installed from the tank 1 side.
It is composed of. The pressure reducing valve 3b and the heater 3c reduce the density of liquid or supercritical carbon dioxide sent out from the pressure washing tank 1, and the density of the carbon dioxide solvent that has passed through the pressure reducing valve 3b and the heater 3c is Usually less than 600Kg/ m3 . The separation tank 3d is trap-like and is used to remove phase-separated low-volatile components such as fat from the carbon dioxide whose density has decreased. An outlet (not shown) is provided at the bottom of the separation tank 3d to take out the separated low-volatile components.
上記吸着剤槽４は、二酸化炭素に混入している
臭気成分などの高揮発性成分を除去するものであ
る。ここでいう臭気成分とは米特有の臭気を構成
している物質で、ヘキサナール、ペンタナール等
のカルボニル化合物を主体とする成分である。こ
の吸着剤槽４の内部には活性炭などの吸着剤が充
填されている。この吸着剤槽４の底部は管路４ａ
によつて上記分離槽３ｄの上部に連通されてお
り、またその上部は管路４ｂによつて供給装置２
の冷却器２ｂに連通されている。 The adsorbent tank 4 removes highly volatile components such as odor components mixed in carbon dioxide. The odor component referred to here is a substance that makes up the unique odor of rice, and is a component mainly composed of carbonyl compounds such as hexanal and pentanal. The interior of this adsorbent tank 4 is filled with an adsorbent such as activated carbon. The bottom of this adsorbent tank 4 is a pipe line 4a.
is connected to the upper part of the separation tank 3d, and the upper part is connected to the supply device 2 by a pipe line 4b.
The cooler 2b is connected to the cooler 2b.
次に、この米穀の洗浄装置で実施される本発明
の洗浄方法の一実施例を説明する。 Next, an embodiment of the washing method of the present invention carried out in this rice washing apparatus will be described.
この装置によつて米穀の洗浄を行うには、まず
耐圧洗浄槽１に所定量の米穀を投入する。つい
で、供給装置２のポンプ２ｃと冷却器２ｂを作動
させ、二酸化炭素を冷却・加圧して密度700Kg／
m3以上の液状あるいは超臨界状態とし、これを耐
圧洗浄槽１に供給する。耐圧洗浄槽１内では、米
穀と二酸化炭素とが接触せしめられ、米穀に含有
されていた脂肪分および臭気成分が二酸化炭素中
に抽出される。 In order to wash rice grains using this device, first, a predetermined amount of rice grains is put into the pressure washing tank 1. Next, the pump 2c and cooler 2b of the supply device 2 are operated to cool and pressurize the carbon dioxide to a density of 700 kg/
It is made into a liquid or supercritical state of m 3 or more and is supplied to the pressure-resistant cleaning tank 1. In the pressure washing tank 1, rice grains are brought into contact with carbon dioxide, and fat and odor components contained in the rice grains are extracted into the carbon dioxide.
脂肪および臭気成分等を含む二酸化炭素中（以
下、溶液と称す）は、耐圧洗浄槽１から分離機構
３に送られる。そしてこの溶液は、分離機構３の
減圧弁３ｂおよび／または加熱器３ｃでその密度
が600Kg／m3以下となるように調整され、分離槽
３ｄに送られて二酸化炭素と、ここに溶解した脂
肪等の低揮発性成分とに相分離される。そして分
離された低揮発性成分は捕集される。 The carbon dioxide containing fat, odor components, etc. (hereinafter referred to as a solution) is sent from the pressure-resistant cleaning tank 1 to the separation mechanism 3. This solution is then adjusted to have a density of 600 kg/m 3 or less using the pressure reducing valve 3b and/or the heater 3c of the separation mechanism 3, and is sent to the separation tank 3d to remove carbon dioxide and fat dissolved therein. It is phase separated into low volatile components such as The separated low volatility components are then collected.
他方、気体状態の二酸化炭素は、分離槽３ｄを
通過して600Kg／m3以下の密度で吸着剤槽４に送
られる。吸着剤槽４では、吸着剤によつて二酸化
炭素に混入している臭気成分等の高揮発性成分が
吸着され、除去される。 On the other hand, gaseous carbon dioxide passes through the separation tank 3d and is sent to the adsorbent tank 4 at a density of 600 Kg/m 3 or less. In the adsorbent tank 4, highly volatile components such as odor components mixed in carbon dioxide are adsorbed and removed by the adsorbent.
このように高揮発性成分、低揮発性成分が除去
され精製された二酸化炭素は、管路４ｂを介して
供給装置２の冷却器２ｂに送られて−20〜30℃程
度に再び冷却され、ポンプ２ｃでその密度が700
Kg／m3以上となるように加圧されて再使用に供さ
れる。 The purified carbon dioxide from which high-volatile components and low-volatile components have been removed is sent to the cooler 2b of the supply device 2 via the pipe 4b and cooled again to about -20 to 30°C. Pump 2c has a density of 700
It is pressurized to over Kg/m 3 and then reused.
（実験例）
次に、本発明の米穀の洗浄方法とその装置の効
果を実験によつて確認した。(Experimental Example) Next, the effects of the rice washing method and apparatus of the present invention were confirmed through experiments.
実験に用いた装置は、第１図に示した構造のも
ので、耐圧洗浄槽１の内容積が8l、ポンプ２ｃの
流量が20l／ｈ、分離槽３ｄの内容積が1l、吸着
剤槽４の内容積が1lのものであつた。また、吸着
剤には、活性炭を用いた。 The apparatus used in the experiment has the structure shown in Figure 1, with the internal volume of the pressure-resistant cleaning tank 1 being 8 liters, the flow rate of the pump 2c being 20 liters/h, the internal volume of the separation tank 3d being 1 liter, and the adsorbent tank 4. had an internal volume of 1 liter. Furthermore, activated carbon was used as the adsorbent.
この装置の耐圧洗浄槽１に米穀（59年宮城産サ
サニシキ90％精米）を４Kg投入した。そして、こ
の耐圧洗浄槽１に圧力100Kg／cm2Ｇ、温度10℃
（密度920Kg／m3）の液状二酸化炭素を20l／ｈで
供給して、米穀の処理を行つた。 4 kg of rice (90% Sasanishiki rice from Miyagi, 1959) was put into the pressure washing tank 1 of this device. Then, in this pressure-resistant cleaning tank 1, a pressure of 100Kg/cm 2 G and a temperature of 10℃ are applied.
The rice grains were treated by supplying liquid carbon dioxide (density 920 Kg/m 3 ) at 20 l/h.
耐圧洗浄槽１を通過した溶液を分離機構３の減
圧弁３ｂと加熱器３ｃによつて、圧力70Kg／cm2
Ｇ、温度30℃（密度270Kg／m3）として、二酸化
炭素を全量気化させた。この二酸化炭素を分離槽
３ｄ、吸着剤槽４で処理したのち、供給装置２に
再循環させた。この処理を30分間行つた。 The solution that has passed through the pressure washing tank 1 is reduced to a pressure of 70 kg/cm 2 by the pressure reducing valve 3b and heater 3c of the separation mechanism 3.
G, the temperature was 30° C. (density 270 Kg/m 3 ), and the entire amount of carbon dioxide was vaporized. This carbon dioxide was treated in the separation tank 3d and the adsorbent tank 4, and then recirculated to the supply device 2. This treatment was carried out for 30 minutes.
以上の操作を１回とし、この操作を100回行つ
て合計400Kgの精米を処理した。 The above operation was performed once, and this operation was repeated 100 times to process a total of 400 kg of polished rice.
比較のために、(A)吸着剤槽４を取り外した洗浄
装置、およびＢ分離槽３ｄを取り外した洗浄装置
によつて同一の米穀を処理し、本発明の洗浄方法
および装置で処理された米穀との品質の比較をお
こなつた。 For comparison, the same rice grains were processed using (A) a cleaning device with the adsorbent tank 4 removed and a cleaning device B with the separation tank 3d removed, and the rice was treated with the cleaning method and device of the present invention. We compared the quality with
米穀の臭気の官能試験を行つたところ、比較例
Ａの方法とその装置で処理された米穀は若干の糠
臭が感じられたが、本発明の洗浄方法とその装置
で処理された米穀はいずれのもほとんど糠臭が無
かつた。 When we conducted a sensory test on the odor of rice, we found that the rice treated with the method and device of Comparative Example A had a slight bran odor, but the rice treated with the cleaning method of the present invention and the device did not. There was almost no bran odor.
また、比較例Ｂの装置で処理された米穀の脂肪
含有量は0.68wt％であつたが、本発明の方法・装
置で処理された米穀の脂肪含有量は0.25wt％あつ
た。これは分離槽３ｄの無いＢの装置では、二酸
化炭素中から脂肪分を十分除去できず、残留脂肪
分の影響で二酸化炭素の脂肪分溶解能力が低下す
るためと思われる。 Furthermore, the fat content of the rice grains treated with the apparatus of Comparative Example B was 0.68 wt%, while the fat content of the rice grains treated with the method and apparatus of the present invention was 0.25 wt%. This seems to be because the device B, which does not have the separation tank 3d, cannot sufficiently remove fat from carbon dioxide, and the ability of carbon dioxide to dissolve fat is reduced due to the influence of residual fat.
以上の結果から、本発明の洗浄方法と装置は米
穀の脂肪分、臭気成分を効率良く除去し得るもの
であることが判明した。 From the above results, it was found that the cleaning method and apparatus of the present invention can efficiently remove fat and odor components from rice grains.
また、本発明の洗浄方法・装置で米穀を処理し
た際、吸着剤槽４の前後で二酸化炭素を取り出し
て官能試験に供したところ、吸着剤槽４を通過す
る前の二酸化炭素には強い糠臭があつたが、吸着
剤槽４を通過した二酸化炭素には全く糠臭がなか
つた。この結果、吸着剤槽４の吸着剤によつて二
酸化炭素中の臭気成分が十分除去されていること
が判明した。 Furthermore, when rice grains were processed using the cleaning method and apparatus of the present invention, carbon dioxide was extracted before and after the adsorbent tank 4 and subjected to a sensory test. Although there was a strong odor, the carbon dioxide that had passed through the adsorbent tank 4 had no bran odor at all. As a result, it was found that the odor components in carbon dioxide were sufficiently removed by the adsorbent in the adsorbent tank 4.
さらに、分離槽３ｄの無い比較例Ｂの装置で
は、吸着剤槽４の活性炭が７回の操作で破過した
が、本発明の装置では、活性炭が破過するまでに
70回の操作を行うことができ、本発明の方法およ
び装置では、活性炭等の吸着剤の劣化が防止され
その寿命が長いことが判明した。 Furthermore, in the device of Comparative Example B without the separation tank 3d, the activated carbon in the adsorbent tank 4 broke through after seven operations, but in the device of the present invention, the activated carbon in the adsorbent tank 4 broke through after seven operations.
It was possible to carry out 70 operations, and it was found that the method and apparatus of the present invention prevents deterioration of the adsorbent such as activated carbon and has a long service life.
また次に、吸着剤槽４の吸着剤の再生を行つた
ところ、本発明の装置ではほぼ全量の活性炭を再
生できたが、分離槽３ｄの無いＢの装置では一部
分の活性炭しか再生されなかつた。これは、Ｂの
装置では活性炭に脂肪分が吸着するためを思われ
る。 Next, when the adsorbent in the adsorbent tank 4 was regenerated, the device of the present invention was able to regenerate almost all of the activated carbon, but the device B, which does not have the separation tank 3d, could only regenerate a portion of the activated carbon. . This seems to be because in the device B, fat is adsorbed on the activated carbon.
（他の実施例）
第２図および第３図は、それぞれ本発明の米穀
の洗浄装置の第２、第３実施例を示すもので、上
記実施例と同一構成部分には、同一符号を付して
説明を簡略化する。(Other Embodiments) FIGS. 2 and 3 show the second and third embodiments of the rice washing apparatus of the present invention, respectively, and the same components as in the above embodiment are given the same reference numerals. to simplify the explanation.
第２図に示す例の洗浄装置にあつては、分離機
構３の分離槽３ｄが吸着剤槽４の下部に一体に連
接されている。そして分離機構３の加熱器３ｃは
分離槽３ｄの上側部に連接されている。 In the cleaning device shown in FIG. 2, the separation tank 3d of the separation mechanism 3 is integrally connected to the lower part of the adsorbent tank 4. The heater 3c of the separation mechanism 3 is connected to the upper side of the separation tank 3d.
この例の洗浄装置にあつては、耐圧洗浄槽１か
ら送られてきた溶液が分離槽３ｄの上部に吹き込
まれると、気体状態の二酸化炭素および高揮発性
成分は直ちに吸着剤槽４内を上昇し、液体状態の
高揮発性成分は分離槽３ｄの底部に溜まる。 In the cleaning device of this example, when the solution sent from the pressure-resistant cleaning tank 1 is blown into the upper part of the separation tank 3d, gaseous carbon dioxide and highly volatile components immediately rise inside the adsorbent tank 4. However, the highly volatile components in a liquid state accumulate at the bottom of the separation tank 3d.
また、第３図に示す例の洗浄装置が上記第１実
施例の装置と異なる点は、ポンプ２ｃに代えて圧
縮器２ｄが設けられた点である。この例の洗浄装
置にあつては、圧縮器２ｄで加圧された二酸化炭
素が冷却器２ｂを介して耐圧洗浄槽１に供給され
る。 Further, the cleaning apparatus shown in FIG. 3 differs from the apparatus of the first embodiment in that a compressor 2d is provided in place of the pump 2c. In the cleaning device of this example, carbon dioxide pressurized by the compressor 2d is supplied to the pressure-resistant cleaning tank 1 via the cooler 2b.
これらの実施例の洗浄装置にあつても、上記第
１実施例の装置と同様の作用効果を得ることがで
きる。 Even in the cleaning devices of these embodiments, the same effects as those of the device of the first embodiment can be obtained.
なお、本考案の米穀の洗浄装置における分離機
構３は、圧力および／あるいは温度調整によつて
二酸化炭素の密度を低下させるものなので、必ず
しも減圧弁と加熱手段の両方を設ける必要はな
い。 In addition, since the separation mechanism 3 in the rice washing apparatus of the present invention reduces the density of carbon dioxide by adjusting pressure and/or temperature, it is not necessarily necessary to provide both a pressure reducing valve and a heating means.
「発明の効果」
以上説明したように本発明の米穀の洗浄方法
は、加圧して液状あるいは超臨界状態にあつて密
度が700Kg／m3以上に保持された二酸化炭素を米
穀に接触せしめてこれを洗浄し、米穀中の脂肪、
臭気成分等を除去するとともに、前記洗浄に使用
した後の二酸化炭素を600Kg／m3以下の密度とし、
まず前記洗浄によつて二酸化炭素中に溶解した脂
肪等の低揮発性成分を相分離せしめ、ついで気化
している二酸化炭素を吸着剤層に導いて二酸化炭
素中に残存する臭気成分等の高揮発性成分を吸着
分離して捕集し二酸化炭素を回収する方法であ
る。"Effects of the Invention" As explained above, the method for washing rice grains of the present invention involves contacting rice grains with pressurized carbon dioxide, which is in a liquid or supercritical state and has a density of 700 kg/m 3 or more. Wash and remove fat from rice grains,
In addition to removing odor components etc., the carbon dioxide after being used for the cleaning has a density of 600 kg/m 3 or less,
First, low-volatile components such as fat dissolved in carbon dioxide are phase-separated by the washing, and then vaporized carbon dioxide is guided to an adsorbent layer to remove high-volatility components such as odor components remaining in carbon dioxide. This method collects carbon dioxide by adsorbing and separating chemical components.
この発明の洗浄方法によれば、米穀から二酸化
炭素に抽出された各種成分のうち、二酸化炭素の
密度を低下させて低揮発性成分を除去したあと高
揮発性成分を吸着剤で除去するので、低揮発性成
分と高揮発性成分を共に十分に除去できる。この
結果、本発明の洗浄方法にあつては、二酸化炭素
を循環させても米穀を良好に処理することができ
る。またこの発明の洗浄方法では、圧力降下によ
り予め低揮発性成分を分離除去するので、低揮発
性成分が吸着剤に吸着されるのを回避でき、吸着
剤の寿命を延ばすことができる。そのうえ、吸着
剤の再生率を大幅に向上できる。従つて、本発明
の洗浄方法によれば、米穀の処理コストを大幅に
低減をすることができる。 According to the cleaning method of the present invention, among the various components extracted by carbon dioxide from rice grains, the density of carbon dioxide is lowered to remove low-volatile components, and then high-volatile components are removed using an adsorbent. Both low-volatile components and high-volatile components can be sufficiently removed. As a result, in the cleaning method of the present invention, rice grains can be treated satisfactorily even when carbon dioxide is circulated. Further, in the cleaning method of the present invention, since low-volatile components are separated and removed in advance by pressure drop, it is possible to avoid adsorption of low-volatile components to the adsorbent, and the life of the adsorbent can be extended. Moreover, the regeneration rate of the adsorbent can be significantly improved. Therefore, according to the cleaning method of the present invention, the cost of processing rice grains can be significantly reduced.
また第２の発明の洗浄装置は、米穀を処理する
米穀投入口と取出口が設けられた耐圧洗浄槽と、
この耐圧洗浄槽に連結されて二酸化炭素を加圧し
て供給する二酸化炭素供給装置と、前記耐圧洗浄
槽に連結され耐圧洗浄槽より排出される二酸化炭
素中に抽出された低揮発性成分を分離するための
減圧弁および／あるいは加熱手段を配した分離機
構と、さらに該分離機構と連設して分離機構より
導出される二酸化炭素中に含まれる高揮発性成分
を除去する吸着剤槽とからなる装置である。この
発明の米穀の洗浄装置によれば、米穀から抽出さ
れた脂肪等の低揮発性成分や臭気成分等の高揮発
性成分のうち、まず低揮発性成分が分離機構で除
去され、ついで高揮発性成分が吸着剤槽で除去さ
れるので、低揮発性成分、高揮発性成分共に十分
に除去できる。この結果、本発明の洗浄装置にあ
つては、二酸化炭素を循環させて米穀を良好に処
理することができる。また、吸着剤槽中の吸着剤
の劣化が防止されるうえ、吸着剤の再生率が大幅
に向上する。従つて、本発明の洗浄装置によれ
ば、米穀の処理コストを大幅に低減をすることが
できる。 Further, the cleaning device of the second invention includes a pressure-resistant cleaning tank provided with a rice grain input port and a rice grain removal port for processing rice grains;
A carbon dioxide supply device connected to the pressure washing tank and supplying pressurized carbon dioxide; and a carbon dioxide supply device connected to the pressure washing tank and separating low volatile components extracted from the carbon dioxide discharged from the pressure washing tank. It consists of a separation mechanism equipped with a pressure reducing valve and/or heating means, and an adsorbent tank that is connected to the separation mechanism and removes highly volatile components contained in the carbon dioxide derived from the separation mechanism. It is a device. According to the rice washing device of the present invention, among the low-volatile components such as fat extracted from rice grains and the high-volatile components such as odor components, the low-volatile components are first removed by the separation mechanism, and then the high-volatile components are removed by the separation mechanism. Since the volatile components are removed in the adsorbent tank, both low-volatile components and high-volatile components can be sufficiently removed. As a result, in the cleaning device of the present invention, rice grains can be processed well by circulating carbon dioxide. Furthermore, deterioration of the adsorbent in the adsorbent tank is prevented, and the regeneration rate of the adsorbent is significantly improved. Therefore, according to the cleaning device of the present invention, the cost of processing rice grains can be significantly reduced.
第１図ないし第３図はそれぞれ本発明の米穀の
洗浄装置の実施例を示す概略構成図である。
１…耐圧洗浄槽、２…供給装置、３…分離機
構、４…吸着剤槽。
FIGS. 1 to 3 are schematic diagrams showing embodiments of the rice washing apparatus of the present invention. 1...Pressure washing tank, 2...Supplying device, 3...Separation mechanism, 4...Adsorbent tank.
Claims (1)
度が700Kg／m3以上に保持された二酸化炭素を米
穀に接触せしめてこれを洗浄し、米穀中の脂肪、
臭気成分等を除去するとともに、前記洗浄に使用
した後の二酸化炭素を600Kg／m3以下の密度とし、
まず前記洗浄によつて二酸化炭素中に溶解した脂
肪等の低揮発性成分を相分離せしめ、ついで気化
している二酸化炭素を吸着剤層に導いて二酸化炭
素中に残存する臭気成分等の高揮発性成分を吸着
分離して捕集し二酸化炭素を回収することを特徴
とする米穀の洗浄方法。 ２ 米穀を処理する米穀投入口と取出口が設けら
れた耐圧洗浄槽と、この耐圧洗浄槽に連結されて
二酸化炭素を加圧して供給する二酸化炭素供給装
置と、前記耐圧洗浄槽に連結され耐圧洗浄槽より
排出される二酸化炭素中に抽出された低揮発性成
分を分離するための減圧弁および／あるいは加熱
手段を配した分離機構と、さらに該分離機構と連
設して分離機構より導出される二酸化炭素中に含
まれる高揮発性成分を除去する吸着剤槽とからな
る米穀の洗浄装置。[Claims] 1. Carbon dioxide in a pressurized liquid or supercritical state with a density of 700 Kg/m 3 or more is brought into contact with rice grains to wash it, and the fat in the rice grains,
In addition to removing odor components etc., the carbon dioxide after being used for the cleaning has a density of 600 kg/m 3 or less,
First, low-volatile components such as fat dissolved in carbon dioxide are phase-separated by the washing, and then vaporized carbon dioxide is guided to an adsorbent layer to remove high-volatility components such as odor components remaining in carbon dioxide. A rice washing method characterized by adsorbing and separating sexual components and collecting carbon dioxide. 2. A pressure-resistant washing tank equipped with a rice input port and a rice-removal port for processing rice, a carbon dioxide supply device connected to the pressure-resistant washing tank and supplying pressurized carbon dioxide, and a pressure-resistant washing tank connected to the pressure-resistant washing tank and supplied with pressurized carbon dioxide. A separation mechanism is provided with a pressure reducing valve and/or a heating means for separating low-volatile components extracted from the carbon dioxide discharged from the cleaning tank; This rice grain cleaning device consists of an adsorbent tank that removes highly volatile components contained in carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26558489A JPH0248281B2 (en) | 1989-10-12 | 1989-10-12 | BEIKOKUNOSENJOHOHOTOSONOSOCHI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26558489A JPH0248281B2 (en) | 1989-10-12 | 1989-10-12 | BEIKOKUNOSENJOHOHOTOSONOSOCHI |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02139003A JPH02139003A (en) | 1990-05-29 |
| JPH0248281B2 true JPH0248281B2 (en) | 1990-10-24 |
Family
ID=17419152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26558489A Expired - Lifetime JPH0248281B2 (en) | 1989-10-12 | 1989-10-12 | BEIKOKUNOSENJOHOHOTOSONOSOCHI |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248281B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641973U (en) * | 1992-11-24 | 1994-06-03 | 株式会社日本コンタクトチップ製作所 | Gas welding nozzle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT408599B (en) * | 1997-12-23 | 2002-01-25 | Natex Prozesstech Gmbh | METHOD FOR THE EXTRACTION OF PLANT PROTECTION PRODUCTS AND / OR REDUCTION OF UNWANTED COMPONENTS |
| FR2798863B1 (en) * | 1999-09-27 | 2001-12-28 | Separex Sa | PROCESS AND INSTALLATION FOR CONDITIONING ADSORBED ON A POROUS SUPPORT OF ACTIVE COMPOUNDS CONTAINED IN A PRODUCT |
-
1989
- 1989-10-12 JP JP26558489A patent/JPH0248281B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641973U (en) * | 1992-11-24 | 1994-06-03 | 株式会社日本コンタクトチップ製作所 | Gas welding nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02139003A (en) | 1990-05-29 |
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