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Smoke alkali-free adsorption type biological desulphurization technology

A biological desulfurization and adsorption technology, applied in the field of flue gas desulfurization technology, can solve the problems of expensive equipment and high maintenance technical requirements, and achieve the effect of reducing operating costs and eliminating secondary pollution.

Inactive Publication Date: 2010-05-12
张动科
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Problems solved by technology

[0011] However, the technical equipment is expensive and requires high technical requirements for system operation and maintenance.

Method used

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  • Smoke alkali-free adsorption type biological desulphurization technology
  • Smoke alkali-free adsorption type biological desulphurization technology

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Embodiment Construction

[0045] A flue gas non-alkali adsorption type biological desulfurization process, the process steps are as follows:

[0046] 1. Flue gas adsorption process:

[0047] The absorption liquid is stored in the circulating water pool, and enters the adsorption tower after being pressurized by the pump; the flue gas enters the adsorption tower through the pipeline, and is fully stirred and contacted with the absorption liquid at PH=7.0-8.0 to make the sulfur dioxide and trioxidation in the flue gas The sulfur is absorbed by the absorption liquid, and the desulfurized flue gas is discharged through the chimney under the power of the induced draft fan.

[0048] The absorption liquid that absorbs sulfur dioxide and sulfur trioxide is discharged from the adsorption tower to become desulfurization wastewater.

[0049] 2. Biological desulfurization process of desulfurization wastewater:

[0050] The desulfurization wastewater first enters the inclined plate sedimentation tank, and the sep...

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Abstract

The invention discloses a smoke alkali-free adsorption type biological desulphurization technology which mainly comprises the following steps: alkali does not need to be added into absorption liquid in an adsorption tower; desulphurization of desulfurated waste water is completed by an technology of adopting an oblique plate sedimentation tank, an adjusting tank, a carbon adding source, an up-flow sludge bed reactor, a middle sedimentation tank, a contact oxidation tank and a secondary sedimentation tank; the adjusting tank is divided into 10 small adjusting tanks and adopts a plug flow structure, so that the temperature of the desulfurated waste water is gradually decreased; and the water which flows out of the secondary sedimentation tank is filtered by a falling curtain type ultrafiltration membrane to concentrate simple substance sulphur-containing water. The technology reduces the operation cost of the desulphurization of the smoke, eliminates the secondary pollution of secondary products caused by the desulphurization, and coverts sulfur dioxide and sulfur trioxide in the smoke into the simple substance sulphur under the function of microorganism.

Description

Technical field: [0001] The invention relates to a flue gas desulfurization process, which is a process for controlling waste gas and water pollution by using an alkali-free adsorption biological desulfurization method, and particularly relates to a coal-fired flue gas desulfurization process and a sulfate-containing wastewater treatment process. Background technique: [0002] There are three main types of natural coal flue gas desulfurization technologies: wet desulfurization technology, semi-dry desulfurization technology and dry desulfurization technology. [0003] 1. Wet desulfurization technology: [0004] Wet desulfurization technologies mainly include lime / limestone-gypsum method, MgO method, ammonium sulfite method, double alkali method, etc., which have high desulfurization efficiency, wide application range, low calcium-sulfur ratio, and mature technology. [0005] However, the wet flue gas desulfurization technology has the disadvantages of high operating costs a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00C02F9/14C02F3/30C02F1/44
Inventor 张动科
Owner 张动科
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