Technological process for treatment of waste gas containing caffeine

A process flow and exhaust gas treatment technology, applied in separation methods, organic chemistry, dispersed particle separation, etc., can solve the problems of huge processing equipment, decreased adsorption capacity of activated carbon, complicated process, etc., and achieve low operating costs, low operating pressure, and environmental protection. The effect of protecting resource saving

Inactive Publication Date: 2012-08-01
QINGDAO UNIV OF SCI & TECH +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the relative humidity of the exhaust gas to be treated exceeds 50%, the adsorption capacity of activated carbon will be greatly reduced, and the processing equipment is huge and the process is complicated. In addition, the economics of activated carbon regeneration must also be considered

Method used

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  • Technological process for treatment of waste gas containing caffeine
  • Technological process for treatment of waste gas containing caffeine
  • Technological process for treatment of waste gas containing caffeine

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Embodiment Construction

[0023] The following will be further described in conjunction with the accompanying drawings, not to limit the scope of the present invention.

[0024] Referring to the drawings, the whole process includes an absorption unit 1 and a crystallization unit 2 .

[0025] The absorption unit 1 absorbs the caffeine in the caffeine-containing exhaust gas to purify the air and obtain a mixture of caffeine and absorbent. The equipment used in the absorption unit 1 is a self-developed cyclone wetted wall tower, its absorption efficiency is higher than that of the traditional absorption device, and the pressure drop before and after the treated mixed gas passes through the device is lower than that of the traditional absorption device, so the absorption Unit 1 is an energy efficient unit.

[0026] The basic data involved in the absorption process of the absorption unit 1 mainly include mass transfer coefficient correlation formula and pressure drop correlation formula. However, the infl...

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Abstract

The invention relates to a technological process for treatment of waste gas containing caffeine, which comprises an absorption unit and a crystallization unit. A rotational flow wetted-wall column is disposed in the absorption unit, and an absorbent is arranged in the rotational flow wetted-wall column. After entering the absorption unit, the waste gas containing caffeine contacts with the absorbent in the absorption unit. Process data of the waste gas containing caffeine in the rotational flow wetted-wall column comprise mass transfer coefficient correlation and solubility correlation. Caffeine in the waste gas containing caffeine is absorbed by the absorbent and absorption liquid is formed. During the absorption process, the absorbent is added from a top inlet of the rotational flow wetted-wall column of the absorption unit, the waste gas after caffeine is absorbed is discharged from the top of the flow wetted-wall column, and the absorption liquid flows out of the bottom of the rotational flow wetted-wall column and enters the crystallization unit. The absorption unit of the technological process has the advantages of being low in operating pressure drop and small in operation expense. Precision of overall mass transfer coefficient correlation that clear water through experimental data regression absorbs caffeine particles in the air meets engineering design requirements of industrial production.

Description

technical field [0001] The invention relates to the technical field of chemical and chemical waste gas treatment, in particular to a caffeine-containing waste gas treatment process. Background technique [0002] With the sustained and high-speed development of our national economy, especially in recent years, my country's GDP has grown at an average annual rate of more than 10%, and my country's economic construction has made remarkable achievements. However, due to the unreasonable industrial structure, some high-energy consumption and high-pollution projects have been launched blindly, which has brought enormous pressure to the natural environment on which we depend. On the one hand, the rapid growth of resource and energy consumption and the massive discharge of pollutants have seriously affected people's daily life and living space; on the other hand, the low effective utilization of resources has caused a lot of waste of resources. my country promulgated and implemente...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14C07D473/12
Inventor 朱兆友杜德清夏丙堃王英龙马艺心
Owner QINGDAO UNIV OF SCI & TECH
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