Effects of Contaminants on the Mass‐Transfer Characteristics of a Two‐Impinging‐Streams Gas‐Liquid Reactor

Dehkordi, Asghar Molaei; Savari, Chiya

doi:10.1002/ceat.201100066

Cited by 10 publications

(1 citation statement)

References 38 publications

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“…However, the relatively low yield, high energy consumption, high water consumption, low mass transfer characteristics caused by contaminates [10], and other environmental issues in coal chemical industry remain as concern. However, the relatively low yield, high energy consumption, high water consumption, low mass transfer characteristics caused by contaminates [10], and other environmental issues in coal chemical industry remain as concern.…”

Section: Methanol-to-olefin or Methanol-to-propylenementioning

confidence: 99%

Game Changers of the C3 Value Chain: Gas, Coal, and Biotechnologies

2012

Chem Eng & Technol

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While ethylene crackers in Middle East and North America are shifting to ethane feedstocks and the volume of propylene production is becoming less, the market share of on-purpose propylene production technologies keeps on increasing. In Northeast Asia, due to the shortage of naphtha and natural gas, methanol-toolefin and methanol-to-propylene technologies attract much attention. In addition, biochemical technologies are impinging the propylene downstream. Using starch, sugar, or biomass as raw materials, important industrial chemicals such as acrylic acid, butanol, and 1,3-propanediol can be produced. Propylene glycol and epichlorohydrine can be manufactured using glycerine, the byproduct of biodiesel. All these factors are changing the traditional C3 value chain profoundly. The status of the game-changing technologies related to the C3 value chain is presented. The relevant factors and the implications will be discussed.

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Section: Methanol-to-olefin or Methanol-to-propylenementioning

confidence: 99%

Game Changers of the C3 Value Chain: Gas, Coal, and Biotechnologies

2012

Chem Eng & Technol

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Gas‐Liquid Mass Transfer Characteristics in a Rotating‐Drum Bioreactor

et al. 2012

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The oxygen volumetric mass transfer coefficient is a key parameter to characterize the performance of aerobic bioreactors. A novel rotating‐drum bioreactor (RDB) fitted with a sparger as proposed in a previous work has demonstrated its excellent gas‐liquid mass transfer performance. To provide primary information on the design and scale‐up of the novel RDB, effects of reactor configuration including the number and width of lifters and operation conditions such as rotational speed, aeration rate, and solid volume fraction on mass transfer performance were systematically investigated in a new medium‐sized RDB. Compared with the stirred bioreactor and traditional RDBs, this new RDB exhibits better mass transfer performance. Taking both operational and reactor configuration parameters into consideration, an empirical correlation to predict the volumetric mass transfer coefficient in this type of RDBs was proposed which is valuable for its design and scale‐up.

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