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Combined Fischer-Tropsch synthesis wastewater treatment system and method thereof

A technology for Fischer-Tropsch synthesis wastewater and wastewater treatment system, which is applied in hydrogen/synthesis gas production, chemical instruments and methods, inorganic chemistry, etc. consumption and cost effects

Active Publication Date: 2019-11-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a combined Fischer-Tropsch synthetic wastewater treatment system and method to solve the problems of high energy consumption and high cost in the Fischer-Tropsch synthetic wastewater treatment process existing in the prior art

Method used

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  • Combined Fischer-Tropsch synthesis wastewater treatment system and method thereof
  • Combined Fischer-Tropsch synthesis wastewater treatment system and method thereof
  • Combined Fischer-Tropsch synthesis wastewater treatment system and method thereof

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Embodiment approach

[0034] In another embodiment of the present invention, the Fischer-Tropsch synthetic wastewater enters the Fischer-Tropsch synthetic wastewater treatment reactor from the Fischer-Tropsch synthetic wastewater feed port arranged at the bottom of the Fischer-Tropsch synthetic wastewater treatment reactor, and the Fischer-Tropsch synthetic wastewater treatment reaction In the device, the liquid phase flows upwards and reacts in contact with the water-phase reforming catalyst in the second reaction zone. The reaction effluent I is waste water after treatment, which is exported from the middle outlet of the Fischer-Tropsch synthesis wastewater treatment reactor, and the outlet is arranged at Between the two reaction zones; in the Fischer-Tropsch synthetic wastewater treatment reactor, the generated gas phase flows upwards and contacts with the shift catalyst in the first reaction zone to react, and the reaction effluent II flows from the top of the Fischer-Tropsch synthetic wastewater...

Embodiment 1

[0050] This embodiment adopts figure 1 A combined Fischer-Tropsch synthetic wastewater treatment system. In the Fischer-Tropsch synthesis wastewater treatment reactor, the diameter ratio of the first reaction zone and the second reaction zone is 1:2, and the volume ratio of the loaded catalyst is 1:2. The first reaction zone is filled with a Cu-Zn system shift catalyst, and the second reaction zone is filled with a Pt system water phase reforming catalyst.

[0051] The Cu-Zn series shift catalyst is prepared by co-precipitation method, and its chemical composition is CuO:ZnO:Al 2 o 3 The ratio is 33:47:20. After precipitation, aging, washing, drying, and roasting, the catalyst is finally shaped into flake-shaped particles of 3mm×3mm.

[0052] The preparation method of the Pt series water phase reforming catalyst is as follows: the first step is to prepare the carrier, get 100 grams of pseudo-boehmite, mix with 1.5 gram of nitric acid (concentration 65%), 2 gram of carbon bl...

Embodiment 2

[0056] This embodiment adopts figure 2 A combined Fischer-Tropsch synthetic wastewater treatment system. In the Fischer-Tropsch synthesis wastewater treatment reactor, the diameter ratio of the first reaction zone and the second reaction zone is 2:3, and the volume ratio of the loaded catalyst is 1:2. The first reaction zone is filled with a Cu-Zn system shift catalyst, and the second reaction zone is filled with a Pd system water phase reforming catalyst.

[0057] The Cu-Zn series shift catalyst is prepared by co-precipitation method, and its chemical composition is CuO:ZnO:Al 2 o 3The ratio is 33:47:20. After precipitation, aging, washing, drying, and roasting, the catalyst is finally shaped into flake-shaped particles of 3mm×3mm.

[0058] The preparation method of the Pd series water phase reforming catalyst is as follows: the first step is to prepare the carrier, dissolve 3 grams of nitric acid, 96 grams of aluminum nitrate, and 80 grams of sodium metasilicate in 2 lit...

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Abstract

The invention relates to a combined Fischer-Tropsch synthesis wastewater treatment system and a method thereof. The combined Fischer-Tropsch synthesis wastewater treatment system comprises a Fischer-Tropsch synthesis wastewater treatment reactor, two reaction zones are vertically arranged in the Fischer-Tropsch synthesis wastewater treatment reactor, a first reaction zone is located on the upper part of the Fischer-Tropsch synthesis wastewater treatment reactor and is a gas-phase reaction zone, and the first reaction zone is filled with conversion catalysts; and a second reaction zone is located on the lower part of the Fischer-Tropsch synthesis wastewater treatment reactor and is a liquid-phase reaction zone, and the second reaction zone is filled with water-phase reforming catalysts. According to the combined Fischer-Tropsch synthesis wastewater treatment system and the method thereof, the process is simple, pollution is little, consumption is low, and economic benefits are high; andthe combined Fischer-Tropsch synthesis wastewater treatment system and the method thereof can not only reduce the energy consumption and process cost of a Fischer-Tropsch synthesis wastewater treatment process in the prior art, but also provide hydrogen rich gas with the ultra-low carbon monoxide content.

Description

technical field [0001] The invention relates to a wastewater treatment system and method, more specifically, a combined Fischer-Tropsch synthesis wastewater treatment system and method. Background technique [0002] Fischer-Tropsch reaction (Fischer-Tropsch) is a method for catalytically converting carbon monoxide and hydrogen into aliphatic hydrocarbons. Through this reaction, carbon-containing resources such as coal, natural gas, and biomass can be converted into clean fuels and other high value-added chemicals on a large scale, opening up a technical route for non-petroleum fuels. The main reaction equation is: [0003] nCO+(2n+1)H 2 →C n h 2n+2 +nH 2 o [0004] It can be seen from the reaction equation that a large amount of synthetic water by-products will be produced while hydrocarbons are obtained. Because some oxygen-containing organic compounds will be produced during the reaction process, the obtained Fischer-Tropsch synthetic water contains about 5% to 10% ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/32
CPCC01B3/326C01B2203/062C01B2203/1017C01B2203/1076C01B2203/1082
Inventor 徐润牛传峰徐凯吴玉夏国富侯朝鹏
Owner CHINA PETROLEUM & CHEM CORP