Fukuoka, Japan
Fukuoka, Japan

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Shimono K.,Seibu Giken Co. | Shimono K.,Kanazawa University | Inoue K.,Seibu Giken Co. | Okano H.,Seibu Giken Co. | Kodama A.,Kanazawa University
Kagaku Kogaku Ronbunshu | Year: 2017

A thermal swing continuous rotary regenerative CO2 adsorber employing a honeycomb rotor was experimentally studied. Based on a previous report, a honeycomb rotor binding 13X type zeolite, which has relatively high adsorption capacities for CO2, was prepared and mounted on a CO2 separation and recovery concentrator. Its performance was evaluated by measuring CO2 recovery concentration and recovery ratio. First, the existence of an optimal rotation speed for performance was confirmed. Next, a CO2 removal and recovery test was performed by changing feed gas conditions of humidity (dew point), temperature, and CO2 concentration, or by changing the main operation variable, regeneration temperature. As expected, performance improved as the dew point or temperature of feed gas was lower, and as regeneration temperature was higher. To attain a target performance of CO2 recovery ratio of 50% and CO2 concentration of 80% of recovered gas, it was found that feed gas required a dew point of ≤−20°C DP and temperature of ≤25°C at a regeneration temperature of 180°C. At a regeneration temperature was 160°C and a dew point of feed gas of ≤−60°C DP, a feed gas temperature around 35°C was acceptable for the above mentioned target performance. As the CO2 concentration of feed gas was increased, the CO2 recovery concentration increased, but recovery ratio decreased due to a relatively small increase of adsorption capacity. It was also found that the recovery gas flow rate should be set to an appropriate value by considering the relationship between recovery gas concentration, recovery ratio and feed gas concentration. Finally, on condition that regeneration temperature was 160°C or higher and the dew point of feed gas was ≤−20°C DP, the temperature of feed gas was found to largely affect the CO2 adsorption characteristics of a rotor. Therefore, lowering the temperature of feed gas should be given priority in order to reduce the energy requirement for regeneration and pre-dehumidification. © 2017 The Society of Chemical Engineers, Japan.


Patent
Seibu Giken Co. | Date: 2016-11-22

Exhaust air from a coater drier is sent to a desorption zone of a VOC concentration rotor. Air which comes out of the desorption zone is sent to a heat exchanger and cooled, the cooled air which comes out of the heat exchanger is sent to a cooling coil which carries out VOC concentration recovery. Air which comes out of the cooling coil is sent to an absorption zone of the VOC concentration rotor. Air which comes out of the absorption zone is sent to the heat exchanger and heated. The heated air which comes out of the heat exchanger is sent to a heating coil to be used as supply air for a coater drier. A heat pump can be used for the cooling coil which carries out cooling condensation of the organic solvent and the heating coil which heats purified air as air supply for the coater drier.


Inoue K.,Seibu Giken Co. | Inoue K.,Kyushu University | Okano H.,Seibu Giken Co. | Yamagata Y.,Kyushu University | And 2 more authors.
Journal of Environmental Sciences | Year: 2011

The adsorption/plasma decomposition with the combination of adsorption honeycomb-sheets and a plasma element is a new technology for small-sized apparatuses to decompose volatile organic compounds (VOCs) at concentrations lower than about 100 ppm. The feasibility of the prototype adsorption/plasma decomposition apparatus was evaluated with the simulated exhausts containing one VOC component and with real exhausts from a painting booth and an adhesion factory. The apparatus decomposed VOCs effectively at the painting booth exhaust but not always satisfactorily at the adhesion factory exhaust. The performance test results with real exhausts were discussed with respect to the concentration and discharge pattern of the exhausts and the basic properties of the system such as cooperation of adsorption and plasma reaction and the concentration dependence of the performance. © 2011 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.


Patent
Seibu Giken Co. | Date: 2012-12-27

An adsorption rotor has a surface layer which can be detached and replaced when performance degrades. A metal aggregate is extended in the width direction of the rotor element so that attachment-and-detachment adsorption rotor elements can be attached thereto using bolts and a perimeter griddle fixing bracket, thus resulting in protecting an upper part of the integral-type adsorption rotor element. In this way, the weight of the attachment-and-detachment adsorption rotor elements can be made light, resulting in them being fixable only using bolts, without special tools or skilled technicians. Moreover, because the detachment-and-replacement procedures can be performed from a rotor spindle side, thus from inside of a chamber, a heavy industrial machine is not required.


Patent
Seibu Giken Co. | Date: 2011-05-26

A desiccant air conditioner has a high energy efficiency due to the absence of excessive heat loss due to ventilation. In order to meet this requirement, the desiccant air conditioner is equipped with a honeycomb rotor wash-coated with agents having capabilities of absorptions of humidity, carbon dioxide and nitrogen, and this honeycomb rotor is divided into at least an absorption zone and a desorption zone. The air in a room is, after being passed through the absorption zone, fed back to the room, and the air which is passed through the desorption zone is exhausted into outside of the room. In this way, carbon dioxide and nitrogen in a room, the latter quantity being corresponded to that of the consumed oxygen in the room, are exhausted into outside of the room, allowing to exhaust carbon dioxide and at the same time to keep the oxygen density to within an allowed limit without the need of excessive ventilation.


Patent
Seibu Giken Co. | Date: 2015-12-21

An absorption-type carbon dioxide removal/condensing apparatus is removes or condenses carbon dioxide so that the apparatus secures high recovery efficiency. The apparatus has a honeycomb rotor holding a carbon dioxide absorbent, which is divided into at least a processing zone and a reproduction zone. After anyone of reproduction air for heating and a processing air is humidified by a humidifying device, both airs are ventilated into the zones, respectively. Thereby, the apparatus can improve absorption performance and density performance. If the honeycomb rotor is further divided into at least first and second processing zones, an air to be processed is humidified by a humidifier to ventilate into the first processing zone, and then a portion or all of the processing air which passed through the first procession zone is passed through the second procession zone (second pass).


Patent
Seibu Giken Co. | Date: 2011-06-20

Exhaust gas after coal or oil burning has moisture, which hinders carbon dioxide adsorption. It is necessary to completely remove this moisture with the minimum use of energy. The exhaust gas from the burning apparatus is first lowered of its temperature by passing through an total heat exchanger rotor, and the resultant gas which has low temperature and humidity is sent to a carbon dioxide adsorption rotor, thereby removing carbon dioxide from the gas, which is then sent through the total heat exchanger rotor with the resultant desorption of moisture adsorbed there and is exhausted to outside atmosphere, while the carbon dioxide adsorption rotor is desorbed of its carbon dioxide using water vapor, with the resultant very humid carbon dioxide to be sent to a processing system such as for underground burial.


Patent
Seibu Giken Co. | Date: 2016-08-31

The present invention provides a heat exchanger. The heat exchanger can exchange heat at a place where a material containing silicone cannot be used. [Means for Solution] The heat exchanger of the present invention has a heat exchange layered body which is secured by a corner member 12, a top plate 13, a sole plate 14. An unvulcanized rubber 18 in which a vulcanized agent is mixed is inserted into a connecting portion between the corner member 12 and a corner portion of the heat exchange layered body. The unvulcanized rubber 18 is made to foam and inflate by heating. Thereby, the heat exchanger has a high airtightness in a short time in a process of its manufacturing and can be used in a painting factory, etc. where a material including silicon cannot be used.


Patent
Seibu Giken Co. | Date: 2013-07-03

[Objective] When performance of an adsorption rotor falls, or even if an adsorption rotor surface layer gets clogged, the present invention provides an adsorption rotor which can be detached and replaced only of its surface layer. [The means of solution] The metal aggregate is extended in the width direction of the rotor element so that the metal aggregate can fix the attachment-and-detachment adsorption rotor elements 6 by piling them up using bolts with the perimeter griddle fixing bracket 7, thus resulting in protecting the upper part of the integral-type adsorption rotor element. In this way, the weight of the attachment-and-detachment adsorption rotor elements 6 can be made light, resulting in them being fixable only using bolts, and thus of no necessity of using a special tool for the work, enabling unskilled personnels to easily carry out the detachment-and-replacement procedures. Moreover, because the detachment-and-replacement procedures can be performed from a rotor spindle side, thus from inside of a chamber, there is no necessity of using a heavy industrial machine etc., resulting in much reduction in the cost for the procedures.


Patent
Seibu Giken Co. | Date: 2016-03-18

In the honeycomb rotor recovery concentration apparatus which collects gas, such as carbon dioxide, from stack gas etc., it collects by the highest possible recovery rate, and condenses to the highest possible concentration, and lessens the amount of energy for recovery concentration as much as possible. Adsorption zone 4, preheating zone 12, low concentration gas purge zone 15, desorption zone 5, high concentration gas purge zone 16, pre-cooling zone 13, and cooling zone 7 are provided to the hand of cut of a rotor. Low concentration gas is prevented from mixing in desorption zone 5, and high concentration gas is prevented from being spilt out from desorption zone 5. Pre-heating zone 12 and pre-cooling zone 13 constitute a circulation circuit, and it raises energy-saving nature by pre-cooling and carrying out preheating heat exchange by gas which circulates through a circuit.

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