JPH04331281A - Heating element packed in container - Google Patents
Heating element packed in containerInfo
- Publication number
- JPH04331281A JPH04331281A JP3025760A JP2576091A JPH04331281A JP H04331281 A JPH04331281 A JP H04331281A JP 3025760 A JP3025760 A JP 3025760A JP 2576091 A JP2576091 A JP 2576091A JP H04331281 A JPH04331281 A JP H04331281A
- Authority
- JP
- Japan
- Prior art keywords
- phosphoric acid
- calcium oxide
- oxide powder
- heating element
- water
- 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.)
- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000292 calcium oxide Substances 0.000 claims abstract description 47
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 47
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 22
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010457 zeolite Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000741 silica gel Substances 0.000 claims abstract description 5
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 description 37
- 238000006243 chemical reaction Methods 0.000 description 33
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 9
- 238000006703 hydration reaction Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 235000013334 alcoholic beverage Nutrition 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 3
- 235000019700 dicalcium phosphate Nutrition 0.000 description 3
- 239000003230 hygroscopic agent Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 235000021156 lunch Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000150 monocalcium phosphate Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 150000003016 phosphoric acids Chemical class 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- -1 Therefore Substances 0.000 description 1
- 229910003944 H3 PO4 Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は容器発熱体に関するもの
であり、さらに詳しくは、電気或いはガス等の加熱源の
ないところにおいても、容器に充填されている液体また
は固体を簡単に加熱することができる、例えば、酒類、
コーヒー等の罐入り飲料、弁当等を加熱することができ
る容器発熱体に関するものである。[Field of Industrial Application] The present invention relates to a container heating element, and more specifically, it is a heating element that can easily heat a liquid or solid filled in a container even in a place where there is no heating source such as electricity or gas. For example, alcoholic beverages,
This invention relates to a container heating element that can heat canned beverages such as coffee, boxed lunches, and the like.
【０００２】0002
【従来技術】容器に充填されている内容物を加熱するた
めに、酸化カルシウム粉末の水和反応を利用することが
一般的に行われており、このことを利用した罐入りの酒
類または弁当等が市販されている。[Prior Art] It is common practice to use the hydration reaction of calcium oxide powder to heat the contents filled in a container, and this can be used to produce canned alcoholic beverages or boxed lunches. is commercially available.
【０００３】これは、ＣａＯ＋Ｈ２Ｏ→Ｃａ（ＯＨ）２
△Ｈ＝−６５．２ｋＪ／ｍｏｌ・・・（１）に
より表される反応により発生する熱を利用したものであ
る。この場合、△Ｈは、反応物および生成物の２５℃の
温度における標準生成エンタルピーから計算された反応
熱であり、−は、発熱反応であることを示している。[0003] This is CaO+H2O→Ca(OH)2
ΔH=-65.2 kJ/mol...The heat generated by the reaction expressed by (1) is utilized. In this case, ΔH is the heat of reaction calculated from the standard enthalpy of formation of the reactants and products at a temperature of 25°C, and - indicates an exothermic reaction.
【０００４】例えば、酸化カルシウム粉末を容器に充填
しておき、これと接するように略反応当量の水をプラス
チック容器に封入しておいて、使用時にはこの水が封入
されているプラスチック容器を開封して、水を酸化カル
シウム粉末と接触させることにより水和反応が起こり、
そのため同一罐内の別の場所に配置されている容器に充
填されている液体或いは固体が加熱されることになる。[0004] For example, calcium oxide powder is filled in a container, and approximately reaction equivalent amount of water is sealed in a plastic container so as to come into contact with the calcium oxide powder, and when used, the plastic container containing this water is opened. A hydration reaction occurs by bringing water into contact with calcium oxide powder,
Therefore, liquids or solids filled in containers located elsewhere within the same can will be heated.
【０００５】しかし、酸化カルシウム粉末の水和反応を
利用する方法は、原料が比較的に入手し易く、安価であ
り、発火の恐れがなく、ガス発生がないため容器内圧力
が大きく高くなることが少なく、さらに、原料、生成物
共に有毒或いは危険ではないという有利な点が多いが、
上記反応式（１）により生成する熱量が少ないので、多
量の原料を充填する必要があり、例えば、罐入り酒類の
場合、発熱部の容積が酒の実質容積以上にもなり、容器
自体が大型化し、罐製造、加工、流通コストが高くなる
以外に、携帯するのに不便であるという欠点が残る。[0005] However, in the method of utilizing the hydration reaction of calcium oxide powder, the raw materials are relatively easy to obtain and are inexpensive, there is no risk of ignition, and there is no gas generation, so the pressure inside the container increases significantly. It has many advantages in that it has few harmful substances, and neither the raw materials nor the products are toxic or dangerous.
Since the amount of heat generated by the above reaction formula (1) is small, it is necessary to fill a large amount of raw materials. For example, in the case of canned alcoholic beverages, the volume of the heat generating part is greater than the actual volume of the alcoholic beverage, and the container itself is large. In addition to increasing can manufacturing, processing, and distribution costs, the drawback remains that it is inconvenient to carry.
【０００６】また、上記反応式（１）は、比較的穏やか
な反応であって、安全性は高いものではあるが、反応開
始後に内容物の温度が最高に高くなるまでに５〜６分程
度も要するのが普通であり、さらに、早い反応により高
温になることが望まれている。[0006]Although the above reaction formula (1) is a relatively mild reaction and is highly safe, it takes about 5 to 6 minutes after the reaction starts until the temperature of the contents reaches its maximum. In addition, it is desirable to achieve high temperatures due to rapid reaction.
【０００７】また、フェロシリコンが金属酸化物に還元
する際の発熱を利用する発熱部と金属アルミニウム等の
酸化熱を利用する着火部と摩擦熱或いは発火石の火花で
発火させる発火部からなる発熱体が提案されている（特
開平０１−２８８２１８号公報）。[0007] Furthermore, there is a heat-generating part that uses the heat generated when ferrosilicon is reduced to a metal oxide, an ignition part that uses the oxidation heat of metal aluminum, etc., and an ignition part that ignites by frictional heat or a spark from a flint. A system has been proposed (Japanese Unexamined Patent Publication No. 01-288218).
【０００８】このフェロシリコンを利用する方法におい
ては、高温が得られるので容器内の内容物を沸騰させる
場合には有利ではあるが、原料が高価であり、さらに、
発火等の危険が考えられ、一般的ではなく、広く普及さ
れるまでには至っていないのが現状である。[0008] This method of using ferrosilicon is advantageous in boiling the contents in the container because it can obtain high temperatures, but the raw materials are expensive and, furthermore,
Currently, it is not common and has not been widely used due to the danger of ignition.
【０００９】[0009]
【発明が解決しようとする課題】本発明は上記に説明し
た従来技術の容器発熱体の種々の問題点に鑑み、本発明
者が鋭意研究を行い、検討を重ねた結果、安全性が高く
、比較的にコンパクトであり、確実に短時間で発熱が起
こり、さらに、発熱のための取り扱いが簡単である低コ
ストの容器発熱体を開発したのである。SUMMARY OF THE INVENTION In view of the various problems of the conventional container heating element described above, the present inventor has conducted intensive research and repeated examinations, and as a result, the present invention is highly safe, We have developed a low-cost container heating element that is relatively compact, generates heat reliably in a short time, and is easy to handle for generating heat.
【００１０】0010
【課題を解決するための手段】本発明に係る容器発熱体
は、酸化カルシウム粉末および液状燐酸がそれぞれ別個
に収容され、かつ、近接して配置され、使用時に酸化カ
ルシウム粉末と液状燐酸を接触させて発熱させることを
特徴とする容器発熱体であり、また、酸化カルシウム粉
末および固体状燐酸の混合物と水がそれぞれ別個に収容
され、かつ、近接して配置され、使用時に酸化カルシウ
ム粉末および固体状燐酸の混合物に水を接触させること
を特徴とする容器発熱体であり、さらに、酸化カルシウ
ム粉末、固体状燐酸および水がそれぞれ別個に収容され
、使用時に水と固体状燐酸と最初に接触させ、次いで、
溶融した燐酸と酸化カルシウムが自発的に接触すること
を特徴とする容器発熱体である。そして、酸化カルシウ
ムおよび固体状燐酸の何れか一方、または、双方に吸湿
剤が添加されている容器発熱体であり、かつ、吸湿剤が
ゼオライト、活性アルミナ、または、シリカゲルである
容器発熱体である。[Means for Solving the Problems] In the container heating element according to the present invention, calcium oxide powder and liquid phosphoric acid are housed separately and placed close to each other, and the calcium oxide powder and liquid phosphoric acid are brought into contact with each other during use. It is a container heating element characterized by generating heat by using a mixture of calcium oxide powder and solid phosphoric acid, and water and a mixture of calcium oxide powder and solid phosphoric acid are respectively housed separately and placed close to each other. A container heating element characterized in that water is brought into contact with a mixture of phosphoric acid, further comprising: calcium oxide powder, solid phosphoric acid and water each contained separately; Then,
This is a container heating element characterized by spontaneous contact between molten phosphoric acid and calcium oxide. and a container heating element in which a hygroscopic agent is added to either or both of calcium oxide and solid phosphoric acid, and the hygroscopic agent is zeolite, activated alumina, or silica gel. .
【００１１】本発明に係る容器発熱体について、以下詳
細に説明する。即ち、本発明に係る容器発熱体において
、使用可能な多数の反応系について、検討を繰り返し行
ったところ、酸化カルシウム粉末と燐酸との中和反応熱
を利用することにより、安全性が高く、短時間加熱が行
うことができ、取り扱い簡単であるという課題を解決し
たのである。The container heating element according to the present invention will be explained in detail below. In other words, after repeated studies on a large number of usable reaction systems in the container heating element according to the present invention, we found that by utilizing the heat of the neutralization reaction between calcium oxide powder and phosphoric acid, a highly safe and short reaction system can be used. This solved the problem of being able to heat for a long time and being easy to handle.
【００１２】従って、同一の発熱量を得るために必要な
容積を、従来の酸化カルシウム粉末と水との水和反応利
用の場合に比較して、１／２以下にできることを知見し
た。この場合、燐酸を液状、例えば、通常使用されてい
る、８５ｗｔ％燐酸溶液として充填しておいて、使用す
る際に酸化カルシウム粉末と接触させるか、或いは、粉
末状の燐酸を使用して使用時に水を添加して反応を開始
させてもよく、さらに、吸湿剤を添加しておくことによ
り、保存時の酸化カルシウム粉末の吸湿により、徐々に
酸化カルシウム粉末の水和反応が進行して、使用時の発
熱量が低下することを抑制し、また、燐酸の潮解とそれ
による酸化カルシウム粉末との反応を防止し、さらに、
反応時に水蒸気が発生した場合には吸湿剤に吸着させる
ことにより、容器内の圧力の増加、容器外への漏洩を防
止すると共に、吸着熱を発生させて熱効率を高くするこ
とが可能となる。この吸湿剤には吸湿能力および取り扱
い性の面から、ゼオライト、活性アルミナ、シリカゲル
等が挙げられる。[0012] Therefore, it has been found that the volume required to obtain the same calorific value can be reduced to 1/2 or less compared to the conventional hydration reaction of calcium oxide powder and water. In this case, phosphoric acid is filled in liquid form, for example, a commonly used 85 wt% phosphoric acid solution, and brought into contact with calcium oxide powder before use, or powdered phosphoric acid is used and The reaction may be started by adding water.Furthermore, by adding a moisture absorbent, the hydration reaction of the calcium oxide powder gradually progresses due to moisture absorption of the calcium oxide powder during storage. In addition, it suppresses the decrease in the calorific value of phosphoric acid and prevents the deliquescence of phosphoric acid and its reaction with calcium oxide powder.
If water vapor is generated during the reaction, by adsorbing it on the moisture absorbent, it is possible to prevent an increase in the pressure inside the container and leakage to the outside of the container, and also to generate heat of adsorption and increase thermal efficiency. Examples of the moisture absorbent include zeolite, activated alumina, and silica gel in terms of moisture absorption ability and ease of handling.
【００１３】本発明に係る容器発熱体おいて使用する燐
酸は、オルト燐酸（Ｈ３ＰＯ４）、メタ燐酸（ＨＰＯ３
）、および、その他の種々の縮合燐酸が挙げられる。こ
の燐酸は液状または固体状で容易に入手できることから
好ましいものである。また、このカルシウム塩には無水
素塩の他に一或いは二水素塩があり、さらに、これらの
塩には無水塩および含水塩がある。The phosphoric acid used in the container heating element according to the present invention is orthophosphoric acid (H3PO4), metaphosphoric acid (HPO3
), and various other condensed phosphoric acids. This phosphoric acid is preferred because it is easily available in liquid or solid form. In addition to anhydrous salts, these calcium salts include mono- or dihydrogen salts, and these salts include anhydrous salts and hydrated salts.
【００１４】また、酸化カルシウム粉末とオルト燐酸と
の反応は、これらの比率、水の影響および温度等の反応
条件によって異なるものであり、以下説明する各反応が
生じるものと考えられる（水は液体として計算した。）
。
３ＣａＯ＋２Ｈ３ＰＯ４＋（Ｈ２Ｏ）→Ｃａ３（Ｐ
Ｏ４）２＋３Ｈ２Ｏ＋（Ｈ２Ｏ）
△Ｈ＝−１７
０．７ｋＪ／ｍｏｌ・・・（２） ＣａＯ＋２Ｈ３Ｐ
Ｏ４＋（Ｈ２Ｏ）→Ｃａ（Ｈ２ＰＯ４）２＋Ｈ２Ｏ＋（
Ｈ２Ｏ）
△Ｈ＝−１９７．４ｋＪ／ｍｏｌ・・
・（３） ＣａＯ＋２Ｈ３ＰＯ４＋（Ｈ２Ｏ）→Ｃａ
（Ｈ２ＰＯ４）・Ｈ２Ｏ＋（Ｈ２Ｏ）
△Ｈ＝−
２１６．６ｋＪ／ｍｏｌ・・・（４） ＣａＯ＋Ｈ３
ＰＯ４＋（Ｈ２Ｏ）→ＣａＨＰＯ４＋Ｈ２Ｏ＋（Ｈ２Ｏ
）
△Ｈ＝−１８６．１ｋＪ／ｍｏｌ・・・（５
） ＣａＯ＋Ｈ３ＰＯ４＋（Ｈ２Ｏ）→ＣａＨＰＯ４
・Ｈ２Ｏ＋（Ｈ２Ｏ）
△Ｈ＝−２０３．７ｋＪ
／ｍｏｌ・・・（６） ＨＰＯ３＋Ｈ２Ｏ→Ｈ３ＰＯ
４ △Ｈ＝−４４．７ｋＪ／ｍｏｌ・・・・（７）
[0014] Furthermore, the reaction between calcium oxide powder and orthophosphoric acid differs depending on their ratio, the influence of water, and reaction conditions such as temperature, and it is thought that the reactions described below occur (water is a liquid )
. 3CaO+2H3PO4+(H2O)→Ca3(P
O4)2+3H2O+(H2O)
△H=-17
0.7kJ/mol...(2) CaO+2H3P
O4+(H2O)→Ca(H2PO4)2+H2O+(
H2O)
△H=-197.4kJ/mol・・
・(3) CaO+2H3PO4+(H2O)→Ca
(H2PO4)・H2O+(H2O)
△H=-
216.6kJ/mol...(4) CaO+H3
PO4+(H2O)→CaHPO4+H2O+(H2O
)
△H=-186.1kJ/mol...(5
) CaO+H3PO4+(H2O)→CaHPO4
・H2O+ (H2O)
△H=-203.7kJ
/mol...(6) HPO3+H2O→H3PO
4 △H=-44.7kJ/mol...(7)
【００１５】この反応式のように、オルト燐酸を反応物
質として使用すると、各反応の何れが生じても、反応熱
は上記に説明した水和反応（１）の約３倍（酸化カルシ
ウム単位重量当たり）となって、少量でも高い発熱量が
得られるのである。なお、（Ｈ２Ｏ）は燐酸が乾燥固体
状の場合には、酸化カルシウム粉末と混合しても直ちに
反応しないので、反応開始剤として添加するのが好まし
い少量の水を示している。しかし、液状燐酸を使用する
場合には必要はない。また、上記（６）の反応が生じる
場合以外では、水が反応により新たに生じるので、反応
が開始されると連続的に反応は進行する。そして、８５
％オルト燐酸はＨ３ＰＯ４とＨ２Ｏの略等モル比の混合
物であるから、たとえ、反応（６）が生じる場合でも水
を添加する必要はない。When orthophosphoric acid is used as a reactant as shown in this reaction formula, no matter which reaction occurs, the reaction heat is approximately three times that of the hydration reaction (1) explained above (unit weight of calcium oxide This results in a high calorific value even with a small amount. Note that (H2O) indicates a small amount of water, which is preferably added as a reaction initiator, since when phosphoric acid is in a dry solid state, it does not react immediately even when mixed with calcium oxide powder. However, this is not necessary when using liquid phosphoric acid. In addition, in cases other than the case where the reaction (6) above occurs, water is newly produced by the reaction, so once the reaction is started, the reaction proceeds continuously. And 85
Since % orthophosphoric acid is a mixture of H3PO4 and H2O in approximately equimolar ratios, there is no need to add water even if reaction (6) occurs.
【００１６】次に、メタ燐酸を使用すると、（７）の反
応が生じてオルト燐酸が生成して、次いで、上記の反応
が起こるので、（７）の反応熱をさらに利用することが
できる。また、オルト燐酸の融点は４２℃であるが、メ
タ燐酸はこの程度の温度では融解しないので、夏季等に
おいて容器が高温にさらされる場合であっても、燐酸の
融解が防止されるので、燐酸を固体状で使用する場合に
は非常に好都合である。Next, when metaphosphoric acid is used, the reaction (7) occurs to produce orthophosphoric acid, and then the above reaction occurs, so that the heat of reaction (7) can be further utilized. In addition, the melting point of orthophosphoric acid is 42°C, but metaphosphoric acid does not melt at this temperature, so even if the container is exposed to high temperatures in the summer, the phosphoric acid is prevented from melting. This is very advantageous when used in solid form.
【００１７】[0017]
【実 施 例】本発明に係る容器発熱体について、
実施例を比較例と共に説明する。[Example] Regarding the container heating element according to the present invention,
Examples will be described together with comparative examples.
【００１８】[0018]
【実 施 例 １】図１に示すアルミニウム製二重缶２
の上部に水４を１８０ｍｌ充填し、下部に酸化カルシウ
ム粉末５を充填し、シリコン栓１ｂにより閉鎖されてい
る容器２′が配置されており、この容器２′に８５％オ
ルト燐酸６を管６′より注入して混合する。この二重缶
２の上端部はシリコン栓１ａにより閉鎖されている。こ
の時の二重缶２上部の水４中央部の温度変化を熱電対３
により測定した。[Example 1] Aluminum double can 2 shown in Figure 1
A container 2' is arranged in which 180 ml of water 4 is filled in the upper part and calcium oxide powder 5 is filled in the lower part, and the container 2' is closed with a silicon stopper 1b. ’ and mix. The upper end of this double can 2 is closed with a silicon plug 1a. At this time, the thermocouple 3 measures the temperature change in the middle of the water 4 at the top of the double can 2.
It was measured by
【００１９】[0019]
【実 施 例 ２】図１において、容器２′に酸化カル
シウム粉末およびメタ燐酸粉末にゼオライト（ユニオン
昭和社製ＭＳ５Ａ粉末）の混合物５を充填し、全体を乾
燥状態に保持した後、管６′から水を注入した。この時
の二重缶２の上部の水４中央部の温度変化を測定した。[Example 2] In Fig. 1, a mixture 5 of calcium oxide powder, metaphosphoric acid powder, and zeolite (MS5A powder manufactured by Union Showa Co., Ltd.) was filled into a container 2', and after keeping the whole in a dry state, a tube 6' Water was injected from. At this time, the temperature change at the center of the water 4 at the top of the double can 2 was measured.
【００２０】[0020]
【実 施 例 ３】図１において、容器２′に酸化カル
シウム粉末層の上にメタ燐酸粉末とＭＳ５Ａ粉末の混合
層を設け、このメタ燐酸とＭＳ５Ａ粉末混合層に管６′
から水を注入した。この時の二重缶２の上部の水４中央
部の温度変化を測定した。[Example 3] In Fig. 1, a mixed layer of metaphosphoric acid powder and MS5A powder is provided on the calcium oxide powder layer in the container 2', and a tube 6' is placed on this mixed layer of metaphosphoric acid and MS5A powder.
Water was injected from. At this time, the temperature change at the center of the water 4 at the top of the double can 2 was measured.
【００２１】[0021]
【比 較 例】図１において、従来の容器２′に酸化カ
ルシウム粉末層を充填しておいて、次いで、水を注入す
ることによる二重缶２の上部の水４中央部の温度変化を
測定した。[Comparison example] In Fig. 1, a conventional container 2' is filled with a layer of calcium oxide powder, and then water is injected, and the temperature change in the center of the water 4 at the top of the double can 2 is measured. did.
【００２２】[0022]
【表１】[Table 1]
【００２３】図２に温度変化の測定結果を示す。到達温
度は略同程度（５℃程度の差）であった。各実施例およ
び比較例共に、反応終了時には反応前より容積が増加し
たが、実施例１、実施例２および実施例３は略同程度で
あり、何れも比較例の４０〜４５％であった。従って、
各実施例ともに比較例に比較して小さい容積で同じよう
な加熱効果のあることがわかった。FIG. 2 shows the measurement results of temperature changes. The temperatures reached were approximately the same (difference of about 5°C). In both Examples and Comparative Examples, the volume increased at the end of the reaction compared to before the reaction, but the volume in Example 1, Example 2, and Example 3 was approximately the same, and was 40 to 45% of the Comparative Example. . Therefore,
It was found that each Example had a similar heating effect with a smaller volume than the Comparative Example.
【００２４】図２において、実施例１は他の実施例およ
び比較例より加熱速度が大きいことがわかる。そして、
実施例１の反応生成物は粉末Ｘ線回析法により分析する
と、ＣａＨＰＯ４およびＣａ（Ｈ２ＰＯ４）２・Ｈ２Ｏ
が主な生成物であった。さらに、Ｃａ（ＯＨ）２も認め
られた。これは燐酸に含まれている水、或いは、上記反
応式（２）で生じた水とＣａＯが水和反応を起こしたた
めであるが、反応量は僅かであるので、発生熱量には殆
ど影響はないものである。In FIG. 2, it can be seen that Example 1 has a higher heating rate than the other Examples and Comparative Examples. and,
When the reaction product of Example 1 was analyzed by powder X-ray diffraction, it was found that CaHPO4 and Ca(H2PO4)2.H2O
was the main product. Furthermore, Ca(OH)2 was also observed. This is due to a hydration reaction between the water contained in phosphoric acid or the water generated in reaction formula (2) above and CaO, but since the amount of reaction is small, it has almost no effect on the amount of heat generated. It's something that doesn't exist.
【００２５】なお、酸化カルシウム粉末とメタ燐酸粉末
を、吸湿剤を使用することなく混合すると、メタ燐酸が
次第に吸湿（潮解）してしまい、自然に反応を起こして
しまった。しかし、乾燥空気中で混合すると１ケ月でも
安定であった。当然、メタ燐酸単独、或いは、固体状オ
ルト燐酸単独でも空気中に放置しておくと潮解する。[0025] When calcium oxide powder and metaphosphoric acid powder were mixed without using a moisture absorbent, the metaphosphoric acid gradually absorbed moisture (deliquescence) and spontaneously reacted. However, when mixed in dry air, it was stable for one month. Naturally, metaphosphoric acid alone or solid orthophosphoric acid alone will deliquesce if left in the air.
【００２６】従って、固体状燐酸、或いは、これと酸化
カルシウム粉末との混合物は、乾燥状態、即ち、吸湿剤
（ゼオライト、活性アルミナ、シリカゲル等）を混合す
るか、または、乾燥ガス中において保管する必要がある
。しかしながら、固体状オルト燐酸は極めて潮解性が高
く、乾燥状態において酸化カルシウム粉末と混合しても
反応を起こすことから、固体状オルト燐酸を酸化カルシ
ウム粉末と混合することは避けなければならない。Therefore, solid phosphoric acid or a mixture of it and calcium oxide powder should be stored in a dry state, ie, mixed with a hygroscopic agent (zeolite, activated alumina, silica gel, etc.), or stored in a dry gas. There is a need. However, solid orthophosphoric acid is highly deliquescent and reacts even when mixed with calcium oxide powder in a dry state, so mixing solid orthophosphoric acid with calcium oxide powder must be avoided.
【００２７】[0027]
【発明の効果】以上説明したように、本発明に係る容器
発熱体は上記の構成を有しているから、液状或いは固体
状燐酸と酸化カルシウム粉末との中和反応を利用するこ
とにより、従来よりも小さい容積で、かつ、従来と同等
かまたはそれ以上の加熱効果を有するという優れたもの
である。Effects of the Invention As explained above, since the container heating element according to the present invention has the above-mentioned structure, it is possible to use the neutralization reaction between liquid or solid phosphoric acid and calcium oxide powder. It is superior in that it has a smaller volume than the conventional one and has a heating effect equal to or greater than that of the conventional one.
【図１】本発明に係る容器発熱体の１例を示す概略断面
図である。FIG. 1 is a schematic cross-sectional view showing one example of a container heating element according to the present invention.
【図２】温度変化の測定結果を示す図である。FIG. 2 is a diagram showing measurement results of temperature changes.
１ａ、１ｂ・・・シリコン栓
２・・・アルミニウム二重缶
３・・・熱電対
４・・・水
５・・・酸化カルシウム、酸化カルシウムと固体状燐酸
等の混合物
６・・・液状燐酸、水注入管1a, 1b... Silicon plug 2... Aluminum double can 3... Thermocouple 4... Water 5... Calcium oxide, mixture of calcium oxide and solid phosphoric acid, etc. 6... Liquid phosphoric acid, water injection pipe
Claims (1)
それぞれ別個に収容され、かつ、近接して配置され、使
用時に酸化カルシウム粉末と液状燐酸を接触させて発熱
させることを特徴とする容器発熱体。 【請求項２】 酸化カルシウム粉末および固体状燐酸
の混合物と水がそれぞれ別個に収容され、、かつ、近接
して配置され、使用時に酸化カルシウム粉末および固体
状燐酸の混合物に水を接触させることを特徴とする容器
発熱体。 【請求項３】 酸化カルシウム粉末、固体状燐酸およ
び水がそれぞれ別個に収容され、使用時に水と固体状燐
酸と最初に接触させ、次いで、溶融した燐酸と酸化カル
シウム粉末を動的に接触させることを特徴とする容器発
熱体。 【請求項４】 酸化カルシウム粉末および固体状燐酸
の何れか一方、または、双方に吸湿剤が添加されている
ことを特徴とする 【請求項１】、 【請求項２】および 【請求項３】記載の容器発熱体。 【請求項５】 吸湿剤がゼオライト、活性アルミナ、
または、シリカゲルである 【請求項４】記載の容器発熱体。[Scope of Claims] [Claim 1] Calcium oxide powder and liquid phosphoric acid are housed separately and placed close to each other, and when used, the calcium oxide powder and liquid phosphoric acid are brought into contact to generate heat. Container heating element. 2. A mixture of calcium oxide powder and solid phosphoric acid and water are housed separately and placed close to each other, and the water is not brought into contact with the mixture of calcium oxide powder and solid phosphoric acid during use. Characteristic container heating element. 3. Calcium oxide powder, solid phosphoric acid, and water are each contained separately, and during use, the water and solid phosphoric acid are first contacted, and then the molten phosphoric acid and calcium oxide powder are brought into dynamic contact. A container heating element characterized by: [Claim 4] [Claim 1], [Claim 2] and [Claim 3] characterized in that a moisture absorbent is added to either or both of the calcium oxide powder and the solid phosphoric acid. Container heating element as described. [Claim 5] The moisture absorbent is zeolite, activated alumina,
Alternatively, the container heating element according to claim 4, which is silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025760A JPH04331281A (en) | 1991-01-25 | 1991-01-25 | Heating element packed in container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3025760A JPH04331281A (en) | 1991-01-25 | 1991-01-25 | Heating element packed in container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04331281A true JPH04331281A (en) | 1992-11-19 |
Family
ID=12174790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3025760A Withdrawn JPH04331281A (en) | 1991-01-25 | 1991-01-25 | Heating element packed in container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04331281A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100353175B1 (en) * | 1999-11-02 | 2002-09-18 | 김인걸 | method for heating food/drink |
| FR2837830A1 (en) * | 2002-04-02 | 2003-10-03 | Rhodia Cons Spec Ltd | SELF-HEATING COMPOSITION BASED ON ORTHOPHOSPHORIC ACID IMPREGNATED ON A LARGE POROSITY MINERAL OXIDE, METHOD FOR PREPARING SAME AND USE THEREOF |
| WO2009072923A1 (en) * | 2007-12-03 | 2009-06-11 | Obshchestvo S Ogranichennoy Otvetstvennostyu 'bargan Production Group' | Thermal energy production method |
| JP2015528358A (en) * | 2012-09-19 | 2015-09-28 | アーノルト，ウーヴェ | Portable food heating device and portable heating element |
-
1991
- 1991-01-25 JP JP3025760A patent/JPH04331281A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100353175B1 (en) * | 1999-11-02 | 2002-09-18 | 김인걸 | method for heating food/drink |
| FR2837830A1 (en) * | 2002-04-02 | 2003-10-03 | Rhodia Cons Spec Ltd | SELF-HEATING COMPOSITION BASED ON ORTHOPHOSPHORIC ACID IMPREGNATED ON A LARGE POROSITY MINERAL OXIDE, METHOD FOR PREPARING SAME AND USE THEREOF |
| WO2003083007A3 (en) * | 2002-04-02 | 2004-04-15 | Rhodia Cons Spec Ltd | Self-heating composition based on orthophosphoric acid impregnated into a highly porous mineral oxide, method for the production thereof and use of the same |
| WO2009072923A1 (en) * | 2007-12-03 | 2009-06-11 | Obshchestvo S Ogranichennoy Otvetstvennostyu 'bargan Production Group' | Thermal energy production method |
| JP2015528358A (en) * | 2012-09-19 | 2015-09-28 | アーノルト，ウーヴェ | Portable food heating device and portable heating element |
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