Removal Efficiency of Volatile Organic Compounds, VOCs, by Ceramic Honeycomb Rotor Adsorbents

Kuma, Toshimi; Mitsuma, Yoichi; Ota, Yasutaka; Hirose, Tsutomu

doi:10.1007/978-1-4613-1375-5_60

Cited by 5 publications

(10 citation statements)

References 2 publications

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“…The removal efficiency of a zeolite concentrator is influenced by parameters such as process flow rate, rotation speed, thermal response, and the type of zeolite coated on the concentrator. [5][6][7] Studies have been undertaken on estimating the nondimensional number between the efficiency and the optimal rotation speed of rotor with a specific set of operating and design parameters. 8,9 Combining the zeolite concentrator with oxidation processes revealed that it is more economical, efficient, and yields fewer secondary emissions 2,10,11 as compared with the single oxidation processes such as the regenerative thermal oxidizer (RTO), regenerative catalytic oxidizer (RCO), and catalytic thermal oxidizer (CTO) processes.…”

Section: Discussionmentioning

confidence: 99%

Adsorption and Desorption Characteristics of Semiconductor Volatile Organic Compounds on the Thermal Swing Honeycomb Zeolite Concentrator

Chang

Lin

Bai

et al. 2003

Journal of the Air & Waste Management Association

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The use of a honeycomb zeolite concentrator and an oxidation process is one of the most popular methods demonstrated to control volatile organic compound (VOCs) emissions from waste gases in semiconductor manufacturing plants. This study attempts to characterize the performance of a concentrator in terms of the removal efficiencies of semiconductor VOCs (isopropyl alcohol [IPA], acetone, propylene glycol methyl ether [PGME], and propylene glycol monomethyl ether acetate [PGMEA]) under several parameters that govern the actual operations. Experimental results indicated that at inlet temperatures of under 40 degrees C and a relative humidity of under 80%, the removal efficiency of a zeolite concentrator can be maintained well over 90%. The optimal rotation speed of the concentrator is between 3 and 4.5 rph in this study. The optimal rotation speed increases with the VOCs inlet concentration. Furthermore, reducing the concentration ratio helps to increase the removal efficiency, but it also increases the incineration cost. With reference to competitive adsorption, PGMEA and PGME are more easily adsorbed on a zeolite concentrator than are IPA and acetone because of their high boiling points and molecular weights.

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Section: Discussionmentioning

confidence: 99%

Adsorption and Desorption Characteristics of Semiconductor Volatile Organic Compounds on the Thermal Swing Honeycomb Zeolite Concentrator

Chang

Lin

Bai

et al. 2003

Journal of the Air & Waste Management Association

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“…In this way, a continuous operation is realized. As for rotary concentrators, , the flows through the uptake and regeneration sections were chosen to have an opposite direction, that is, the uptake and regeneration steps are operated in countercurrent mode. The time during which the sorbent is present in each of the adsorber sections can be adjusted by changing either the rotation speed or the relative size of the corresponding sections.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, effective rotary concentrators for the treatment of exhaust air streams containing VOCs (volatile organic compounds) are designed for the continuous adsorption of VOCs from the air stream and discharge of clean air. , Such concentrators are widely produced and sold all over the world [e.g., DEC Impianti Group (Italy); Seibu Giken Co., Ltd (Japan); Dürr Environmental, Inc. (U.S.); Waterlink (U.S.); etc.). Also, different types of continuously operated rotary catalytic reactors and sorption bed systems, in which catalyst (sorbent) is subsequently treated at different stages of the cycle process, are described. − …”

Section: Introductionmentioning

confidence: 99%

A Rotating Adsorber for Multistage Cyclic Processes: Principle and Experimental Demonstration in the Separation of Paraffins

Babich

Langeveld

Zhu

et al. 2000

Ind. Eng. Chem. Res.

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A rotating adsorber, which combines different steps of a cyclic separation process into a single unit, is described. Its design provides for the simultaneous exposure of the various tubular adsorbers of the rotor to the different steps of the process, thus ensuring a continuous operation. The separation of normal and branched paraffins over zeolite 5A is used as a model process to illustrate the experimental performance of the adsorber in comparison to that of a fixed-bed adsorber. Equilibrium adsorption data for n-and i-butane individually were used to determine the optimal experimental conditions. The distribution of the tubular adsorbers over the different sections of the rotating adsorber was based on fixed-bed experiments. Under the experimental conditions chosen, the effluents of the uptake and regeneration sections of the rotating adsorber have a constant composition, containing only i-and n-butane, respectively. The rotating adsorber shows a long-term continuous high efficiency of separation.

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“…The removal efficiency of an HZRC is influenced by parameters such as the process flow rate, rotation speed, thermal response, and the type of zeolite used to coat the concentrator [5][6][7]. Several studies have estimated the non-dimensional number between the efficiency and optimal rotation speed of the rotor, with a specific set of operating and design parameters [8,9].…”

Section: Introductionmentioning

confidence: 99%

Optimizing operating parameters of a honeycomb zeolite rotor concentrator for processing TFT-LCD volatile organic compounds with competitive adsorption characteristics

Lin

Chang

2009

Journal of Hazardous Materials

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Removal Efficiency of Volatile Organic Compounds, VOCs, by Ceramic Honeycomb Rotor Adsorbents

Cited by 5 publications

References 2 publications

Adsorption and Desorption Characteristics of Semiconductor Volatile Organic Compounds on the Thermal Swing Honeycomb Zeolite Concentrator

Adsorption and Desorption Characteristics of Semiconductor Volatile Organic Compounds on the Thermal Swing Honeycomb Zeolite Concentrator

A Rotating Adsorber for Multistage Cyclic Processes: Principle and Experimental Demonstration in the Separation of Paraffins

Optimizing operating parameters of a honeycomb zeolite rotor concentrator for processing TFT-LCD volatile organic compounds with competitive adsorption characteristics

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