Device and method for converting cyanide-containing organic waste liquid into nitrogen-doped carbon nanomaterials

A technology of organic waste liquid and nitrogen-doped carbon, applied in chemical instruments and methods, nano-carbon, inorganic chemistry, etc., can solve complex engineering problems and other problems, achieve temperature control problems, solve gasification energy consumption problems, The effect of increasing the added value of products

Active Publication Date: 2022-07-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, complex engineering problems arise, that is, the reaction device needs to meet the requirements of continuous conversion and standard conversion at all times
This technique has not been reported

Method used

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  • Device and method for converting cyanide-containing organic waste liquid into nitrogen-doped carbon nanomaterials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] according to figure 1 In the assembled device, the height of the fixed bed section 3 is 1:5 of the height of the fluidized bed section 3 .

[0034]The fluidized bed section 2 is filled with catalyst (10% NiFe alloy (9% Fe-1% Ni)-42% alumina-48% magnesia) through the fluidized bed catalyst inlet 7, and the fixed bed catalyst is fed through the fixed bed catalyst inlet 8 to the fixed bed. Bed section 3 is packed with catalyst (1% Ni-1% W-98% silica). The weight of the catalyst in the fixed bed section 3 is 1:5 of the weight of the catalyst in the fluidized bed section 2. From the fluidized bed auxiliary gas inlet 5, the auxiliary fluidized bed gas (Ar) was introduced into the fluidized bed section 2, and its mass flow was 5% of the cyanide-containing organic waste liquid, and the fluidized bed section 2 was heated to 500 °C.

[0035] The cyanogen-containing organic waste liquid inlet 9 from the inlet of the vaporizer 4 is passed into the cyanogen-containing organic wast...

Embodiment 2

[0040] according to figure 1 In the assembled device, the height of the fixed bed section 3 is 1:4 of the height of the fluidized bed section 3 .

[0041] The fluidized bed section 2 is charged with catalyst (1% CoMoW alloy (0.9% Co-0.05% Mo-0.05% W)-99% silica) through the fluidized bed catalyst inlet 7, and the fixed bed is fed through the fixed bed catalyst inlet 8 Stage 3 was loaded with catalyst (10% Co-10% Mo-25% silica-55% alumina). The weight of the catalyst in the fixed bed section 3 is 2:1 of the weight of the catalyst in the fluidized bed section 2. From the fluidized bed auxiliary gas inlet 5, the auxiliary fluidized bed gas (Ar) was introduced into the fluidized bed section 2, and its mass flow was 1% of the cyanide-containing organic waste liquid, and the fluidized bed section 2 was heated to 800 °C.

[0042] From the cyanogen-containing organic waste liquid inlet 9 of the vaporizer 4, pass into the cyanide-containing organic waste liquid (organic substance wit...

Embodiment 3

[0047] according to figure 1 In the assembled device, the height of the fixed bed section 3 is 1:2 of the height of the fluidized bed section 3 .

[0048] The fluidized bed section 2 is charged with catalyst (30% NiCu alloy (10% Ni-20% Cu)-70% alumina) through the fluidized bed catalyst inlet 7, and the fixed bed section 3 is charged through the fixed bed catalyst inlet 8 Catalyst (10%Co-5%Mo-45%Magnesia-40%Alumina). The weight of the catalyst in the fixed bed section 3 is 2:1 of the weight of the catalyst in the fluidized bed section 3. From the fluidized bed auxiliary gas inlet 5 to the fluidized bed section 2), pass the auxiliary fluidized bed gas (Ar), the mass flow of which is 1% of the cyanide-containing organic waste liquid, and heat the fluidized bed section 2 to 750 ° C .

[0049] From the cyanogen-containing organic waste liquid inlet 9 of the vaporizer 4, the cyanogen-containing organic waste liquid (organic substance with a molecular weight of 26-350) is passed ...

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Abstract

The invention discloses a device and a method for converting cyanogen-containing organic waste liquid into nitrogen-doped carbon nanomaterials, belonging to the technical field of cyanogen-containing organic waste liquid conversion. The device includes a two-stage reaction device; the first stage is a fluidized bed, its function is to use a catalyst to convert cyanide-containing organic waste liquid into nitrogen-doped carbon nanomaterials; the second stage is a fixed bed, its function is to use a catalyst to All cyanide compounds are converted to NH 3 or N 2 , and the organic matter in the gas is only methane. The invention realizes the high-value utilization of the cyanogen-containing organic waste liquid, and makes the organic matter in the final tail gas directly meet the emission standard. The technology of the invention is suitable for the treatment of waste liquid in the ammonia oxidation process of organic matter and the treatment of organic waste liquid generated by the pyrolysis of various nitrogen-containing or cyanide-containing organic materials. Compared with the original incineration method, the cost is greatly reduced and the product additional value.

Description

technical field [0001] The invention belongs to the technical field of conversion of cyanogen-containing organic waste liquid, and in particular relates to a device and method for converting cyanide-containing organic waste liquid into nitrogen-doped carbon nanomaterials. Background technique [0002] Cyanide-containing organic waste liquid (including waste liquid, waste gas) is the product of the ammonia oxidation reaction process and the thermal decomposition of nitrogen-containing and cyanide-containing organic compounds (including gas, liquid, solid), with complex components, low content, and environmental impact. Features with a large effect. The current method for treating cyanogen-containing organic waste liquid includes pre-cooling and then enriching by absorption or adsorption. Part of the cyanogen-containing organic waste liquid can be turned into liquid after enrichment. A small amount of liquid with simple components can be recycled as a product. However, most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00B01J8/24B01J8/02B01J8/04C01B32/162C01B32/184C02F101/38
CPCC02F1/00B01J8/24B01J8/0242B01J8/0449C01B32/162C01B32/184C02F2101/38
Inventor 崔超婕骞伟中
Owner TSINGHUA UNIV
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