WO2006095482A1 - Dehumidifying agent and dehumidifying rotor - Google Patents

Dehumidifying agent and dehumidifying rotor Download PDF

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Publication number
WO2006095482A1
WO2006095482A1 PCT/JP2005/022761 JP2005022761W WO2006095482A1 WO 2006095482 A1 WO2006095482 A1 WO 2006095482A1 JP 2005022761 W JP2005022761 W JP 2005022761W WO 2006095482 A1 WO2006095482 A1 WO 2006095482A1
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Prior art keywords
dehumidifying
dehumidifying agent
long
fiber
titanium
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PCT/JP2005/022761
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French (fr)
Japanese (ja)
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Satoshi Uchida
Yoshitaka Sanehira
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Earth Clean Tohoku Co., Ltd.
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Publication of WO2006095482A1 publication Critical patent/WO2006095482A1/en

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/28—Selection of materials for use as drying agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C01P2004/16—Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F24F2203/1036—Details

Definitions

  • the present invention relates to a dehumidifying agent for long-fiber nanoacid-titanium that absorbs moisture in the air and dehumidifies it, and particularly to a dehumidifying rotor that incorporates this long-fiber nanoacid-titanium as a dehumidifying agent.
  • a dehumidifying agent for long-fiber nanoacid-titanium that absorbs moisture in the air and dehumidifies it
  • a dehumidifying rotor that incorporates this long-fiber nanoacid-titanium as a dehumidifying agent.
  • FIG. 4 is a graph showing the hygroscopic performance of the dehumidifying agent of the present invention and a conventional dehumidifying agent.
  • crystals of long-fiber nanoacid titanium used as a dehumidifying agent are obtained. It is a long fiber and has many fine pores on its surface. It is a nano-scale, extremely fine, fibrous (wire-like) acid-titanium.
  • the crystal form of titanium oxide is long fiber. Unlike the conventionally known tube-shaped titanium oxide, this is a fibrous crystal filled with the contents, such as hair. Since it has a very fine crystal structure, the amount of moisture adsorbed per unit area with a large specific surface area can be greatly increased.
  • a preferable crystal diameter is 2 to 80 nm, and an amorphous structure or nanowire structure having a length of lOOnm or more.
  • K is extremely small, so it is essentially an amorphous titanium oxide.
  • its chemical composition is (Na, H) TiO.

Abstract

A dehumidifying agent which comprises a filament nano titanium oxide wherein a crystal in the form of a filament has a diameter of 2 to 80 nm and a length of 100 nm or more, and, in particular, the crystal further has a specific surface area of 200 to 1000 m2 and the dehumidifying agent exhibits a moisture absorbing capacity of 30 % or more of the dry weight thereof and has a crystal structure comprising two types of an amorphous nano-wire structure and a nano-tube structure.

Description

明 細 書  Specification
除湿剤及び除湿ロータ  Dehumidifying agent and dehumidifying rotor
技術分野  Technical field
[0001] 本発明は、空気中の水分を吸湿して除湿する長繊維ナノ酸ィ匕チタンの除湿剤にか かわり、特に、この長繊維ナノ酸ィ匕チタンを除湿剤として内蔵する除湿ロータに関す る。  [0001] The present invention relates to a dehumidifying agent for long-fiber nanoacid-titanium that absorbs moisture in the air and dehumidifies it, and particularly to a dehumidifying rotor that incorporates this long-fiber nanoacid-titanium as a dehumidifying agent. Related.
背景技術  Background art
[0002] 空気中の水分を吸収、吸着する除湿剤は空調用、産業工業用、冷凍サイクルなど に多く利用されている。このような除湿剤としてシリカゲル、活性炭、活性アルミナ、ゼ オライトが一般的に知られている。この除湿剤としては、除湿量が大きぐ表面などに 吸着した水分を脱着 (離散)させる (再生)のために使用済み除湿剤に温風を吹き付 けて水分を脱着 (離脱)させことになるがこの吹き付ける温風の温度が低い程再生ェ ネルギ一が少なくてすむことになる。一般的に除湿量を増大させるために比表面積 を多くすればよいが、使用する除湿剤に限度がある。また、除湿剤を再生するための 吹きつける温風の温度を低くするためには除湿剤の表面の細孔径 (空隙の直径)を 小さくすることにより、低い温度によって再生効率をあげることができるが従来の製品 にはこのような効果を発揮する除湿剤はいまだ見出せな力つた。比表面積の大きな 酸ィ匕チタンのナノ構造を有するものとして特開平 10— 152323号公報 (A)に知られ ているが、内部が空洞であるチューブ状の酸ィ匕チタンである。また、デカント空調装 置に使用されている除湿ロータの除湿剤としては特開 2000— 61250号公報 (A)な どに記載されている。  [0002] Dehumidifiers that absorb and adsorb moisture in the air are widely used for air conditioning, industrial industries, refrigeration cycles, and the like. As such a dehumidifying agent, silica gel, activated carbon, activated alumina, and zeolite are generally known. As this dehumidifying agent, desorbing (decomposing) the moisture adsorbed on the surface where the dehumidifying amount is large (spreading) by blowing warm air on the used dehumidifying agent to desorb (desorb) the moisture. However, the lower the temperature of the hot air blown, the less regeneration energy is required. In general, the specific surface area should be increased in order to increase the amount of dehumidification, but there are limits to the dehumidifying agent used. In order to reduce the temperature of the hot air blown to regenerate the dehumidifying agent, the regeneration efficiency can be increased at a low temperature by reducing the pore diameter (void diameter) on the surface of the dehumidifying agent. The conventional product has yet to find a dehumidifying agent that exhibits this effect. JP-A-10-152323 (A) is known to have a nanostructure of titanium oxide titanium having a large specific surface area, but is a tube-shaped titanium oxide titanium having a hollow inside. Further, a dehumidifying agent for a dehumidifying rotor used in a decant air conditioner is described in Japanese Patent Laid-Open No. 2000-61250 (A).
[0003] 特開平 10— 152323号公報には、酸化チタンはチューブ状であり、その結晶構造 は八面体結晶である。その比表面積は 300m2/gであって、その湿度吸着能力は後 述するように乾燥重量の 20%である。従って、除湿ロータには使用できるものではな かった。また、日本特開 2000— 61250号公報に記載の除湿剤は一般的な除湿剤 を使用するものであって十分なる除湿効果は得られな力つた。また、比表面積に対す る除湿効率もよ 、ものではな力つた。 特に、デシカント空調装置に使用される除湿ロータに充填する除湿剤としては、通過 する空気の吸水速度が早ぐ吸水率の高い物が良い。更に、再生時の脱水率の温 度依存率の少ないもので、比表面積が大きぐ細孔径にばらつきの幅のあるものが最 も良いとされている。 [0003] In JP-A-10-152323, titanium oxide has a tube shape, and its crystal structure is an octahedral crystal. Its specific surface area is 300m 2 / g, and its humidity adsorption capacity is 20% of the dry weight as described later. Therefore, it could not be used for a dehumidifying rotor. Further, the dehumidifying agent described in Japanese Patent Application Laid-Open No. 2000-61250 uses a general dehumidifying agent, so that sufficient dehumidifying effect was not obtained. In addition, the dehumidifying efficiency with respect to the specific surface area was also unreasonable. In particular, as the dehumidifying agent to be filled in the dehumidifying rotor used in the desiccant air conditioner, one having a high water absorption rate with a fast water absorption rate of the passing air is preferable. Furthermore, it is said that the one having a small temperature dependency of the dehydration rate during regeneration and the one having a large specific surface area and a wide variation in pore diameter is said to be the best.
特許文献 1 :特開平 10 - 152323号公報 (A)  Patent Document 1: JP-A-10-152323 (A)
特許文献 2：特開 2000 - 61250号公報 (A)  Patent Document 2: JP 2000-61250 A (A)
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0004] 本発明は、従来の除湿剤に比較して除湿効果の優れた長繊維ナノ酸ィ匕チタンを含 有する除湿剤を提供するものである。 [0004] The present invention provides a dehumidifying agent comprising a long-fiber nanoacid titanium having an excellent dehumidifying effect as compared with a conventional dehumidifying agent.
本発明の課題は、結晶が長繊維状のナノ酸ィ匕チタンを充填した除湿ロータを提供 するものである。  An object of the present invention is to provide a dehumidification rotor filled with nano-acid titanium having a long fiber shape.
本発明の課題は、デシカント空調装置の除湿ロータに最適である除湿剤を提供す るところである。  An object of the present invention is to provide a dehumidifying agent that is optimal for a dehumidifying rotor of a desiccant air conditioner.
課題を解決しるための手段  Means to solve the problem
[0005] 本発明の前記課題は、長繊維ナノ酸化チタンを含有する除湿剤を内蔵する除湿口 ータによって達成できる。  [0005] The object of the present invention can be achieved by a dehumidifying mouthpiece incorporating a dehumidifying agent containing long-fiber nano-titanium oxide.
また、本発明は、水分を吸着した除湿剤を振動波によって脱気する除湿剤の再生 方法によってよく所期の目的を達成できる。特に、長繊維ナノ酸化チタンを含有する 除湿剤を内蔵する除湿ロータを備えたデシカント空調装置によって本発明の第 4の 発明が達成できる。前記課題を達成するために本発明における除湿剤は、結晶形状 が長繊維である長繊維ナノ酸ィ匕チタンカゝらなる除湿剤による構成である。  In addition, the present invention can achieve the intended purpose well by a method of regenerating a dehumidifying agent that degasses a dehumidifying agent that has adsorbed moisture by vibration waves. In particular, the fourth invention of the present invention can be achieved by a desiccant air conditioner equipped with a dehumidifying rotor containing a dehumidifying agent containing long-fiber nano-titanium oxide. In order to achieve the above object, the dehumidifying agent in the present invention has a configuration of a dehumidifying agent such as a long fiber nanoacidic titanium crystal whose crystal shape is a long fiber.
本発明において、長繊維状の結晶の直径が 2〜80nmで、長さが lOOnm以上であ る長繊維ナノ酸ィ匕チタンであることを特徴とする除湿剤の構成である。この結晶の比 表面積が 200〜1000m2である。また、湿度吸着能力は乾燥重量の 30%以上であり 、結晶構造は非結晶のナノワイヤー構造とナノチューブ構造の 2種類となる。 In the present invention, the dehumidifying agent is characterized by being a long-fiber nanoacid titanium having a long fiber crystal diameter of 2 to 80 nm and a length of lOOnm or more. The specific surface area of this crystal is 200 to 1000 m 2 . Moreover, the humidity adsorption capacity is 30% or more of the dry weight, and there are two types of crystal structures: an amorphous nanowire structure and a nanotube structure.
[0006] 本発明にお 、て使用する長繊維ナノ酸ィ匕チタンは、次のようにして製造することが できる。 即ち、酸化チタン及び酸化チタン塩の少なくとも 1種を主成分とする材料を 、水酸ィ匕カリウムで水熱処理することによって製造することができる。この材料として、 粉末状、ゾル状、ゲル状の酸化チタン、酸化チタン塩を水酸化カリウムで水熱処理（ アルカリ処理)することによりナノレベルの細長!/、結晶構造を有する長繊維状ナノ酸 化チタンを製造する。 [0006] The long-fiber nanoacid titanium used in the present invention can be produced as follows. That is, a material mainly composed of at least one of titanium oxide and titanium oxide salt is used. It can be produced by hydrothermal treatment with potassium hydroxide. As this material, powder-like, sol-like, and gel-like titanium oxide, and titanium oxide salt are hydrothermally treated with potassium hydroxide (alkali treatment) to form nano-level slender! / Long fiber nano-oxide with crystal structure Manufacture titanium.
図面の簡単な説明  Brief Description of Drawings
[0007] [図 1]図 1は本発明の除湿剤の SEM (a)と TEM (b)走査電子顕微鏡の写真である。  [0007] FIG. 1 is a SEM (a) and TEM (b) scanning electron microscope photograph of the dehumidifier of the present invention.
[図 2]図 2は本発明除湿剤を含有する除湿ロータの斜視図及び断面図である。  FIG. 2 is a perspective view and a cross-sectional view of a dehumidifying rotor containing the dehumidifying agent of the present invention.
[図 3]図 3は本発明の除湿ロータを配置したデシカント空調装置の概略図である。  FIG. 3 is a schematic view of a desiccant air conditioner in which the dehumidifying rotor of the present invention is arranged.
[図 4]図 4は本発明除湿剤と従来の除湿剤との吸湿性能を表すグラフである。  FIG. 4 is a graph showing the hygroscopic performance of the dehumidifying agent of the present invention and a conventional dehumidifying agent.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0008] 本発明に係る除湿剤及び除湿ロータの実施の形態を図に基づいて詳細に説明す ると、図 1に示すように、除湿剤として使用する長繊維ナノ酸ィ匕チタンの結晶が長繊 維状であって、表面に細かい孔径を多数備えたものである。ナノレベルの極めて細 カ^、繊維状 (ワイヤ状)の酸ィ匕チタンである。酸ィ匕チタンの結晶形状が長繊維状であ る。このものは従来知られているチューブ状の酸ィ匕チタンとは異なり、中身が詰まった 、例えば毛髪のような繊維状の結晶である。非常に細かい結晶構造を有しているの で、比表面積が大きぐ単位面積当たりの水分の吸着量を大きく増加させることがで きる。特に、好ましい結晶の直径は 2〜80nmで、長さが lOOnm以上の非結晶構造、 ナノワイヤー構造である。  [0008] An embodiment of a dehumidifying agent and a dehumidifying rotor according to the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, crystals of long-fiber nanoacid titanium used as a dehumidifying agent are obtained. It is a long fiber and has many fine pores on its surface. It is a nano-scale, extremely fine, fibrous (wire-like) acid-titanium. The crystal form of titanium oxide is long fiber. Unlike the conventionally known tube-shaped titanium oxide, this is a fibrous crystal filled with the contents, such as hair. Since it has a very fine crystal structure, the amount of moisture adsorbed per unit area with a large specific surface area can be greatly increased. In particular, a preferable crystal diameter is 2 to 80 nm, and an amorphous structure or nanowire structure having a length of lOOnm or more.
[0009] この長繊維ナノ酸化チタンの結晶の組成は、（K,H) Ti Oである。この L,M,Nは 0  [0009] The composition of this long-fiber nano-titanium oxide crystal is (K, H) TiO. This L, M, N is 0
L M N  L M N
〜20の範囲である。この組成のうち Kは極微量であるから実質的には酸化チタンの 非結晶である。例えば、その化学組成は (K, H) Ti Oである。また、結晶の外径が 1  It is in the range of ~ 20. Of this composition, K is extremely small, so it is essentially an amorphous titanium oxide. For example, its chemical composition is (K, H) Ti 2 O. The outer diameter of the crystal is 1
2 2 5  2 2 5
Onm、内径 8nmで長さが lOOnm以上の非結晶構造がナノチューブ構造である。  Onm, an amorphous structure with an inner diameter of 8 nm and a length of lOOnm or more is a nanotube structure.
[0010] この長繊維ナノ酸化チタンの結晶の糸且成は、（Na，H) Ti Oである。この L [0010] The long-fiber nano-titanium oxide crystal yarn is (Na, H) TiO. This L
L N ，M，Nは L N, M, N are
0〜20の範囲である。この組成のうち Kは極微量であるから実質的には酸化チタンの 非結晶である。例えば、その化学組成は (Na, H) Ti Oである。本発明の除湿剤で It is in the range of 0-20. Of this composition, K is extremely small, so it is essentially an amorphous titanium oxide. For example, its chemical composition is (Na, H) TiO. With the dehumidifying agent of the present invention
2 2 5  2 2 5
ある長繊維ナノ酸ィ匕チタンの具体的な製造方法にっ 、て次のように説明する。  A specific method for producing a long fiber nanoacid titanium will be described as follows.
[0011] 1)ナノワイヤー構造 具体的には酸ィ匕チタン材料を水酸ィ匕カリウム濃度 10〜25モル/ Kg— H 0、温度 7 [0011] 1) Nanowire structure Specifically, an acid-titanium material has a potassium hydroxide concentration of 10-25 mol / Kg—H0, temperature 7
2  2
0〜150°Cの条件下で水熱処理を行って製造する。このとき水酸ィ匕カリウムの濃度が 10モル/ Kg— H O以下の場合、及び 25モル/ Kg— H Oを上回ると比表面積が小さ  Manufactured by hydrothermal treatment under conditions of 0 to 150 ° C. At this time, the specific surface area is small when the concentration of potassium hydroxide is 10 mol / Kg—H 2 O or less, and when it exceeds 25 mol / Kg—H 2 O.
2 2  twenty two
くなる傾向がある。また、処理温度において 70°C以下および 150°C以上になると同じ く比表面積力 、さくなる傾向である。従って、上記水酸ィ匕カリウムの濃度、処理温度 につ!/、ては上記範囲が好適である  Tend to be. In addition, when the processing temperature is 70 ° C or lower and 150 ° C or higher, the specific surface area force tends to decrease. Therefore, the above range is preferable for the concentration of potassium hydroxide and the treatment temperature.
2)ナノチューブ構造  2) Nanotube structure
酸ィ匕チタン材料を水酸ィ匕ナトリウム濃度 5〜15モル ZKg— H 0、温度 70〜150°C  Oxidized titanium material with sodium hydroxide concentration 5-15 mol ZKg—H 0, temperature 70-150 ° C
2  2
の条件下で水熱処理を行って製造する。この製造方法によって再現性の良い、安定 的な長繊維ナノ酸化チタンが得られた。このとき 酸化チタン材料を水酸化ナトリウム 濃度が 5モル ZKg— H O以下の場合、及び 15モル ZKg— H Oを上回ると比表面  It is manufactured by performing hydrothermal treatment under the conditions of By this production method, a stable long fiber nano-titanium oxide having good reproducibility was obtained. At this time, if the titanium oxide material has a sodium hydroxide concentration of 5 mol ZKg-H 2 O or less, and exceeds 15 mol ZKg-H 2 O, the specific surface
2 2  twenty two
積が小さくなる傾向がある。また、処理温度において 70°C以下および 150°C以上に なると同じく比表面積が小さくなる傾向である。従って、上記水酸化ナトリウムの濃度 The product tends to be smaller. In addition, the specific surface area tends to decrease when the processing temperature is 70 ° C or lower and 150 ° C or higher. Therefore, the concentration of sodium hydroxide
、処理温度については上記範囲が好適である。 The above range is suitable for the processing temperature.
[0012] 次に、本発明の除湿剤として使用する結晶が長繊維状のナノ酸ィ匕チタンについて[0012] Next, regarding the nano-acid titanium having a long fibrous crystal used as the dehumidifying agent of the present invention
、除湿ロータに使われている従来の除湿剤との性能の比較を表 1に示す。 Table 1 shows a comparison of performance with conventional dehumidifiers used in dehumidifying rotors.
[0013] [表 1] 種類 比表面積 細孔径 実用脱水温度 形状 除湿量 [0013] [Table 1] Type Specific surface area Pore diameter Practical dehydration temperature Shape Dehumidification amount
4 5 0〜  4 5 0 ~
シリカゲル 1〜： L 0 8 0〜 1 5 0 非結晶 8  Silica gel 1 ~: L 0 8 0 ~ 1 5 0 Amorphous 8
5 5 0  5 5 0
ゼォライ ト 3 0 0 0 . 4〜2 8 0〜： L 5 0で 結晶 3 酸化チタン  Zeolite 3 0 0 .4 4 to 2 80 0: Crystal in L 5 0 3 Titanium oxide
3 0 0 0 . 4〜： L . 5 6 0〜： L 0 0で 結晶 3 チューブ  3 0 0 0 .4 ~: L. 5 6 0 ~: L 0 0 in crystal 3 tube
アルミケィ酸塩 2 7 0 2〜4 4 5〜7 0 ¾ ナノチューブ 3 ァロフェン 3 1 2 3 . 5〜5 4 5 ~ 7 0 ¾ ナノチューブ 3 ィモゴライ ト 2 6 3 1 ~ 2 4 5 ~ 7 0で ナノチューブ 3 本発明  Aluminum silicate 2 7 0 2-4 4 5-7 0 ¾ Nanotube 3 Alophene 3 1 2 3.5 5-5 4 5-7 0 ¾ Nanotube 3 Imogolite 2 6 3 1- 2 4 5-7 0 Nanotube 3 The present invention
酸化チタン 4 5 0 0 . 4〜5 4 0〜7 0 ナノワイヤー 5 ナノワイヤー  Titanium oxide 4 5 0 .4 4-5 4 0-7 0 Nanowire 5 Nanowire
酸化チタン  Titanium oxide
2 7 0 0 . 4〜5 4 0〜7 0で ナノチューブ 5 ナノチューブ [0014] 本発明の新規除湿剤を再生する方法としては、従来のように温風を吹き付けて、脱 水することも可能であるが、本発明のばあいは、好ましくは、新規な再生方法として振 動波を利用する。この振動波としては電磁波としては電磁波、マイクロ波、超音波に よる振動波を利用する。 2 7 0 0 .4 ~ 5 4 0 ~ 7 0 in nanotube 5 nanotube [0014] As a method for regenerating the novel dehumidifying agent of the present invention, it is possible to dehydrate by blowing hot air as in the prior art. However, in the case of the present invention, preferably, a novel regeneration method is used. As an example, a vibration wave is used. As this oscillating wave, the oscillating wave by electromagnetic wave, microwave and ultrasonic wave is used as electromagnetic wave.
実施例 1  Example 1
[0015] 粒径 20nmの酸化チタン (TiO )粉末 0. 21gを水酸化カリウム 17モル/ Kg— H O  [0015] Titanium oxide (TiO 2) powder with a particle size of 20 nm 0.21 g of potassium hydroxide 17 mol / Kg—H 2 O
2 2 の水溶液に混入し、次いで撹拌して容器を密封して乾燥機内に入れて配置し、 110 °Cで 20時間過熱し、熱処理を行ったこの水熱処理した生成物をイオン交換水で水 洗し、希塩酸で中和して余剰のアルカリ分を除去する。この生成物を遠心分離機で 分離し、その固形分を凍結乾燥機で乾燥して長繊維ナノ酸ィ匕チタンの集合体が得ら れた。この得られた長繊維ナノ酸ィ匕チタンについて走査型電子顕微鏡 (SEM)によ つて観察したところ、細長い繊維が不織布のように密集した構造が観察された。その 状態の写真を図 1に示す。この粉末の結晶構造を電子線回析により測定したところ（ K, H) Ti Oであることが確認された。この長繊維ナノ酸ィ匕チタンの比表面積 (生成 The mixture was then stirred and sealed, placed in a dryer, placed in a dryer, heated at 110 ° C for 20 hours, and the hydrothermally treated product was treated with ion-exchanged water. Wash and neutralize with dilute hydrochloric acid to remove excess alkali. This product was separated with a centrifugal separator, and the solid content was dried with a freeze dryer to obtain an aggregate of long fiber nanoacid titanium. When the obtained long fiber nanoacid titanium was observed with a scanning electron microscope (SEM), a structure in which elongated fibers were densely packed like a nonwoven fabric was observed. Figure 1 shows a photograph of this state. When the crystal structure of the powder was measured by electron diffraction, it was confirmed to be (K, H) TiO. Specific surface area of this long fiber nanoacid titanium
2 2 5 2 2 5
物の BET)について窒素吸着法を用いて測定したところ 396.31m2/gと非常に大きな 比表面積を備えることが確認された。本発明の長繊維ナノ酸ィ匕チタンの吸着性能に ついて従来の除湿剤との比較実験を行った。その結果が図 4に示されるグラフである BET) was measured using the nitrogen adsorption method, and it was confirmed that it has a very large specific surface area of 396.31 m 2 / g. A comparison experiment with the conventional dehumidifier was conducted on the adsorption performance of the long fiber nanoacid titanium of the present invention. The result is the graph shown in Figure 4.
[0016] 本発明の除湿ロータについて図面に基づいて説明する。図 2において除湿剤を含 有する除湿ロータ 1は回転ケース 2の収容部 3内に除湿剤の粉末 4を充填してある。 この除湿ロータ 1を配置したデシカント空調装置 5の概略図を図 3に示す。このデシ力 ント空調装置 5は、吸気口 6から吸気された空気はフィルタを通過して、除湿ロータ 1 によって除湿され、顕熱ロータを通過した後、熱交換装置で冷却されて室内に供給さ れ。室内の汚れた空気はフィルタを通過し、顕熱ロータを通過した後温水コイルでカロ 熱されて除湿ロータに吹きつけ、除湿剤の再生を行う。この空気は排気口から排気 する。顕熱ロータ、熱交換装置は通常の装置を配置してある。なお、本発明の除湿 剤は前記実施例によって製造されるものに限られず、長繊維ナノ酸化チタンの形態 において、従来の除湿剤に比較して優れた吸着効果を有する範囲に調節することが できる。例えば、水熱処理温度、処理時間、水酸ィ匕カリウム濃度を適宜調節して、使 用する態様にあわせて実施することができる。処理時間を適度に調節することにより、 比表面積を大きくするなどの調整を行うことが可能である。 The dehumidifying rotor of the present invention will be described with reference to the drawings. In FIG. 2, a dehumidifying rotor 1 containing a dehumidifying agent has a container 4 of a rotating case 2 filled with a dehumidifying powder 4. A schematic diagram of a desiccant air conditioner 5 in which the dehumidifying rotor 1 is arranged is shown in FIG. In this desiccant air conditioner 5, the air sucked from the air inlet 6 passes through the filter, is dehumidified by the dehumidifying rotor 1, passes through the sensible heat rotor, is cooled by the heat exchange device, and is supplied to the room. That. The dirty air in the room passes through the filter, passes through the sensible heat rotor, and then is heated by the hot water coil and blown to the dehumidifying rotor to regenerate the dehumidifying agent. This air is exhausted from the exhaust port. Ordinary devices are arranged for the sensible heat rotor and heat exchange device. Note that the dehumidifying agent of the present invention is not limited to the one produced by the above example, and in the form of long-fiber nano-titanium oxide, the dehumidifying agent can be adjusted to a range having an excellent adsorption effect as compared with conventional dehumidifying agents. it can. For example, the hydrothermal treatment temperature, the treatment time, and the potassium hydroxide concentration can be adjusted as appropriate according to the mode of use. Adjustments such as increasing the specific surface area can be made by appropriately adjusting the treatment time.
[0017] 本発明の除湿剤は、従来まったく知られな力つた結晶が長繊維状のナノ酸ィ匕チタ ンを使用するから、従来の除湿剤に比較して数段に優れた除湿効果を発揮する。特 に、この長繊維ナノ酸ィ匕チタンは製造工程によって細孔径にすることができるので比 表面積が従来の除湿剤に比較して大である。活性炭よりも比表面積が広ぐシリカゲ ルに匹敵するものである。そのために、再生時 (水分の脱着）の吹きつける温風の温 度が従来の 40°Cでも完全に水分を除去することができた。そのため、熱エネルギー の消費が少ない。本発明の除湿剤を電磁波、マイクロ波などの振動波によって吸着 した水分を脱気 (再生)することによって従来の再生方法に比較して低!ヽ温度で廉価 に再生することができる。  [0017] Since the dehumidifying agent of the present invention uses nano-acid titan having a long-fibrous crystal, which has never been known in the past, it has a dehumidifying effect that is superior to conventional dehumidifying agents. Demonstrate. In particular, the long-fiber nanoacid titanium can be made to have a pore size by the production process, and therefore has a large specific surface area compared to conventional dehumidifiers. It is comparable to silica gel, which has a larger specific surface area than activated carbon. For this reason, moisture could be completely removed even when the temperature of the warm air blown during regeneration (desorption of moisture) was 40 ° C. Therefore, heat energy consumption is low. By degassing (regenerating) the moisture adsorbed by the vibration wave such as electromagnetic waves and microwaves, the dehumidifying agent of the present invention can be regenerated at a lower temperature and at a lower temperature than the conventional regeneration method.
産業上の利用可能性  Industrial applicability
[0018] 本発明の除湿剤及び除湿ロータは、空気中の湿気を除去するのに最適で、産業上 の利用可能性が大き 、ことは明らかである。 [0018] It is clear that the dehumidifying agent and the dehumidifying rotor of the present invention are optimal for removing moisture in the air and have a great industrial applicability.

Claims

請求の範囲 The scope of the claims
[1] 結晶形状が長繊維である長繊維ナノ酸化チタンを含有することを特徴とする除湿 剤。  [1] A dehumidifying agent comprising long-fiber nano-titanium oxide whose crystal shape is a long fiber.
[2] 長繊維状の結晶の直径が 2〜80nmで、長さが lOOnm以上である長繊維ナノ酸ィ匕 チタンを含有することを特徴とする除湿剤。  [2] A dehumidifying agent comprising a long-fiber nanoacid titanium having a long-fiber crystal diameter of 2 to 80 nm and a length of lOOnm or more.
[3] 前記長繊維ナノ酸ィ匕チタンがチューブ状であり比表面積が大きいものを使用するこ とを特徴とする請求の範囲 1または請求の範囲 2に記載の除湿剤。 [3] The dehumidifying agent according to claim 1 or claim 2, wherein the long fiber nanoacid titanium is a tube and has a large specific surface area.
[4] 長繊維ナノ酸化チタンを含有する除湿剤を内蔵することを特徴とする除湿ロータ。 [4] A dehumidification rotor comprising a dehumidifying agent containing long-fiber nano-titanium oxide.
[5] 水分を吸着した除湿剤を振動波によって脱気することを特徴とする除湿剤の再生 方法。 [5] A method for regenerating a dehumidifying agent, wherein the dehumidifying agent adsorbing moisture is degassed by vibration waves.
[6] 長繊維ナノ酸化チタンを含有する除湿剤を内蔵する除湿ロータを備えたことを特徴 とするデシカント空調装置。  [6] A desiccant air conditioner comprising a dehumidification rotor incorporating a dehumidifying agent containing long-fiber nano-titanium oxide.
PCT/JP2005/022761 2005-03-04 2005-12-12 Dehumidifying agent and dehumidifying rotor WO2006095482A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013203577A (en) * 2012-03-28 2013-10-07 Osaka Gas Co Ltd Method for producing titanium oxide nanowire having reduced alkali metal, and method for removing alkali metal from titanium oxide nanowire
WO2019116986A1 (en) * 2017-12-12 2019-06-20 シャープ株式会社 Humidity adjustment device and humidity adjustment method
WO2019138794A1 (en) * 2018-01-10 2019-07-18 シャープ株式会社 Humidity control device and separation device
CN113251263A (en) * 2021-06-02 2021-08-13 魏艳丽 Smart community monitoring equipment based on Internet of things

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JPH05146676A (en) * 1991-11-27 1993-06-15 Kawata Mfg Co Ltd Honeycomb-like ceramic body containing adsorptive zeolite and production thereof
JPH09108530A (en) * 1995-10-19 1997-04-28 Toyo Eng Works Ltd Adsorbing type dehumidifying apparatus
JP2001271428A (en) * 2000-03-24 2001-10-05 Marukou Sangyo:Kk Underfloor humidity control agent

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Publication number Priority date Publication date Assignee Title
JPH05146676A (en) * 1991-11-27 1993-06-15 Kawata Mfg Co Ltd Honeycomb-like ceramic body containing adsorptive zeolite and production thereof
JPH09108530A (en) * 1995-10-19 1997-04-28 Toyo Eng Works Ltd Adsorbing type dehumidifying apparatus
JP2001271428A (en) * 2000-03-24 2001-10-05 Marukou Sangyo:Kk Underfloor humidity control agent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013203577A (en) * 2012-03-28 2013-10-07 Osaka Gas Co Ltd Method for producing titanium oxide nanowire having reduced alkali metal, and method for removing alkali metal from titanium oxide nanowire
WO2019116986A1 (en) * 2017-12-12 2019-06-20 シャープ株式会社 Humidity adjustment device and humidity adjustment method
WO2019138794A1 (en) * 2018-01-10 2019-07-18 シャープ株式会社 Humidity control device and separation device
CN113251263A (en) * 2021-06-02 2021-08-13 魏艳丽 Smart community monitoring equipment based on Internet of things

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