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Catalytic hydrogenation desorption method for oxygenated compound in Fischer-Tropsch synthesized water phase and application thereof

A technology of Fischer-Tropsch synthesis and catalytic hydrogenation, which is applied to the production of hydrocarbons from oxygen-containing organic compounds, chemical instruments and methods, and the preparation of liquid hydrocarbon mixtures. High efficiency, high efficiency, and simple process

Active Publication Date: 2012-03-21
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013]Because the water phase generated by the Fischer-Tropsch synthesis reaction is acid corrosive, it cannot be recycled directly, and it will cause environmental pollution if it is directly discharged as sewage

Method used

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  • Catalytic hydrogenation desorption method for oxygenated compound in Fischer-Tropsch synthesized water phase and application thereof
  • Catalytic hydrogenation desorption method for oxygenated compound in Fischer-Tropsch synthesized water phase and application thereof
  • Catalytic hydrogenation desorption method for oxygenated compound in Fischer-Tropsch synthesized water phase and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1.0Ru / C catalyst preparation: prepared by an equal volume impregnation method, the loading amount of metal Ru is 1.0wt%, 0.81 g of ruthenium chloride trihydrate solid is completely dissolved in 50 mL of deionized water, and then 30 g of activated carbon is quickly added to the solution , Stir gently for a few minutes, let it stand for 12 hours, and dry it in a drying oven at 120°C for 12 hours.

[0038] Add 12 grams of 1.0Ru / C catalyst into the trickle bed reactor, and flow the Fischer-Tropsch synthetic aqueous phase (raw material 1 with an acidity of 0.423%) of 2.62wt% organic oxygenates through the reactor at a flow rate of 0.2mL / min (Airspeed is 1.0h -1 ), adjust the reaction temperature to 110°C, the reaction pressure to 4.0 MPa, the effluent water from the reactor is separated into gas and liquid by the condenser, and then analyzed. After the reaction, the removal rate of each component in the water phase and the acidity reduction rate of the water phase are shown in ...

Embodiment 2

[0040] Add 12 grams of 1.0Ru / C catalyst to the trickle bed reactor, and flow the Fischer-Tropsch synthesis aqueous phase (raw material 1 with an acidity of 0.423%) containing 2.62wt% organic oxygenates through the reaction at a flow rate of 0.1mL / min (Airspeed 0.5h -1 ), adjust the reaction temperature to 210°C, the reaction pressure to 4.0 MPa, the effluent from the reactor is separated into gas and liquid by the condenser, and then analyzed. After the reaction, the removal rate of each component in the water phase and the acidity reduction rate of the water phase are shown in Table 1.

Embodiment 3

[0042] Add 12 grams of 1.0Ru / C catalyst to the trickle bed reactor, and flow the Fischer-Tropsch synthesis aqueous phase (raw material 1 with an acidity of 0.423%) containing 2.62wt% organic oxygenates through the reaction at a flow rate of 0.2mL / min (Airspeed is 1.0h -1 ), adjust the reaction temperature to 210°C, the reaction pressure to 4.0 MPa, the effluent from the reactor is separated into gas and liquid by the condenser, and then analyzed. After the reaction, the removal rate of each component in the water phase and the acidity reduction rate of the water phase are shown in Table 1.

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Abstract

The invention relates to a catalytic hydrogenation desorption method for an organic oxygenated compound in a Fischer-Tropsch synthesized water phase and an application thereof. The method comprises the following steps: taking a water phase co-produced from a Fischer-Tropsch synthetic oil production process as a raw material; under the action of a catalyst, adopting a hydrogenation reaction technique to convert an organic oxygenated compound in the water phase into a C1-C4 gas phase low-carbon alkane; and lastly, separating the C1-C4 gas phase low-carbon alkane from the water phase, thereby desorbing the organic oxygenated compound in the water phase. According to the method, the desorbing rate for the organic oxygenated compound is above 98%. The catalytic hydrogenation desorption method can be used for purifying the wastewater containing the organic oxygenated compound. The method is suitable for the purification treatment of the organic wastewater generated by chemical industry enterprises, food industry, and the like. The water treating method can be used for realizing the recycle of resources; the gas alkane generated under the action of catalytic hydrogenation can be reused in a Fischer-Tropsch synthetic process, thereby promoting the reasonability of the whole Fischer-Tropsch synthetic process; and the water after being treated also can be recycled.

Description

Technical field [0001] The present invention relates to a method for treating wastewater. Specifically, the present invention relates to a method for treating wastewater from a Fischer-Tropsch synthesis reaction. The method relates to a liquid phase hydrogenation reaction technology, which converts organic oxygen-containing compounds such as aldehydes, alcohols, acids, ketones, esters, phenols, etc. into gaseous alkanes and removes them from organic wastewater, and particularly relates to a Fischer-Tropsch synthesis water phase containing The catalytic hydrogenation removal method and application of oxygen compounds solve the problems of the recycling of Fischer-Tropsch synthetic water and environmental pollution. Background technique [0002] The development of coal liquefaction has become a long-term strategic measure for my country to solve the contradiction between oil supply and demand. The Fischer-Tropsch synthesis reaction is the core reaction of the indirect coal liquefac...

Claims

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Application Information

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IPC IPC(8): C02F9/04C10G2/00C07C1/20C07C9/02
Inventor 郑洪岩陈伦刚李永旺朱玉雷
Owner SYNFUELS CHINA TECH CO LTD
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