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Method for treating dry distillation sewage of oil shale

A sewage treatment and oil shale technology, applied in the field of environmental protection and petrochemical industry, can solve the problems of expensive treatment cost, difficult separation of catalyst and liquid, and low treatment efficiency

Inactive Publication Date: 2010-10-13
CHANGCHUN UNIV OF TECH
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Problems solved by technology

Its advantage is that in the reaction, the pollutants are easy to contact with the photocatalyst, and there is no limitation of mass transmission, but there are also shortcomings, and the treatment efficiency is not high. When the concentration of the catalyst is increased, the suspension will be turbid, which will affect the penetration of light. Reduce light efficiency, and the catalyst is difficult to separate from the liquid, and the processing cost is expensive

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  • Method for treating dry distillation sewage of oil shale
  • Method for treating dry distillation sewage of oil shale
  • Method for treating dry distillation sewage of oil shale

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Embodiment Construction

[0021] 1. Preparation of catalyst

[0022] Industrial titanium sulfate solution (TiO 2 140g / L, Ti 3+ 1.17g / L, Fe 2+ 43g / L, Cr 3+ 0.23g / L, Mn 2+ 0.45g / L, F is 312g / L), EDTA is A.R. grade. Prepare 0.05mol / L titanium sulfate solution, put 1000mL in a beaker, add 50mL of 0.01mol / L EDTA solution under stirring condition, let stand for 30 minutes, adjust with 0.1mol / L sodium hydroxide solution The pH value of the solution, until a white precipitate appears, heat it in a water bath to 80°C for 2 hours, wash the precipitate until there is no SO 4 - Until then, dry to obtain powder, and roast the obtained TiO at a temperature of 580-600°C 2 .

[0023] 2. Catalytic degradation of dry distillation sewage

[0024]Using a self-made photocatalytic device to degrade oil shale retort wastewater. The device mainly includes a fixed bracket 1 at the bottom, a motor 15, a reaction device, and a chassis, wherein the reaction device mainly includes a left ultraviolet lamp tube 4, a reacti...

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Abstract

The invention relates to a method for treating dry distillation sewage of oil shale, which belongs to the fields of environmental protection and petrochemical industry. The method comprises the following steps of: filling a prepared TiO2catalyst into a 2,500mL reaction tube at the reaction temperature of between 25 and 28 DEG C by using a home-made cyclone photo-catalysis reactor and 150w mercury lamps, namely a left ultraviolet lamp tube and a right ultraviolet lamp tube, adding the dry distillation sewage into the reaction tube, introducing oxygen into the bottom of the reactor from an oxygen inlet at a flow rate of 50mL / min, irradiating the reaction tube with rays from two sides with adjustable distance, sampling and detecting the reaction substances every 5 minutes, and finally fulfilling the purpose of sewage treatment. The cyclone photo-catalysis reactor using the TiO2 catalyst is quite effective for treating the dry distillation sewage of the oil shale; and the method has the advantages of low running expense, low cost and high treatment efficiency.

Description

technical field [0001] The invention belongs to the fields of environmental protection and petrochemical industry, and in particular relates to a method for treating oil shale dry distillation sewage. Background technique [0002] Oil shale is a companion to stripped coal seams. It is a solid combustible mineral that can produce shale oil similar to natural petroleum through low-temperature dry distillation. However, a large amount of dry distillation sewage will be produced during the production of shale oil. The sewage mainly comes from the drainage of the retort plant, the rinsing drainage of the dry distillate processing, the circulating cooling drainage and the drainage of the tank area. The sewage is a kind of sewage with a wide variety of pollutants, complex components, and high concentration. It contains not only petroleum substances and volatile phenolic compounds common in natural petroleum plants, but also a large amount of organic sulfur, organic nitrogen and env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F1/72
Inventor 王树江代迅王立托刘桂英孙艳艳
Owner CHANGCHUN UNIV OF TECH
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