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Method for removing organic matters in byproduct carbon black of acetylene preparation through partial oxidation of natural gas

A technology of natural gas and by-products, applied in the direction of fibrous fillers, etc., can solve the problems that the by-product carbon black of acetylene cannot be used directly, the application effect of carbon black products is not ideal, and the gaps of carbon black are blocked, so as to improve the light transmittance of toluene, The effect of improving resource utilization and improving quality

Inactive Publication Date: 2020-08-25
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, carbon black, a by-product of natural gas production from acetylene, is regarded as solid waste in China, and it is mostly disposed of by landfill and boiler incineration, which will pollute the environment and cause a waste of carbon black resources.
There is also a direct drying and removal treatment of carbon black, and the application effect of the obtained by-product carbon black product is not ideal, because the organic matter contained in carbon black will lead to poor quality of carbon black, block the gaps of carbon black, and affect the performance , so that the acetylene by-product carbon black cannot be used directly after drying and dehydration

Method used

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  • Method for removing organic matters in byproduct carbon black of acetylene preparation through partial oxidation of natural gas
  • Method for removing organic matters in byproduct carbon black of acetylene preparation through partial oxidation of natural gas

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Experimental program
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Effect test

Embodiment 1

[0042] according to figure 1 The shown flow process removes the organic matter in the acetylene by-product carbon black, and the specific process flow is:

[0043] A. drying: put the carbon black (the by-product from the partial oxidation of natural gas to acetylene) with a moisture content of 50% in the electric heating drying equipment at 100°C, so that the moisture content of the carbon black is reduced to 30%;

[0044] B. Remove: control the relative pressure of the activation furnace to be 0.4MPa, and isolate oxygen, air and ozone, fill the carbon black with a moisture content of 30% into the activation furnace, add 1.12% nitrogen of the carbon black quality, and the activation furnace is heated up to 500°C, and react at 500°C for 90 minutes; after the reaction, add water vapor with 2.37% carbon black mass into the activation furnace, and raise the temperature of the activation furnace to 900°C, and react at 900°C for 150 minutes.

Embodiment 2

[0046] according to figure 1 The shown flow process removes the organic matter in the acetylene by-product carbon black, and the specific process flow is:

[0047] A. drying: put the carbon black (the by-product from the partial oxidation of natural gas to acetylene) with a moisture content of 85% in the steam heating drying equipment at 125°C, so that the moisture content of the carbon black is reduced to 25%;

[0048] B. Removal: Control the relative pressure of the activation furnace to be 0MPa, and isolate oxygen, air and ozone, fill the carbon black with a moisture content of 30% into the activation furnace, add helium with 5% carbon black quality, and the activation furnace is heated to 800°C, and react at 800°C for 60 minutes; after the reaction, add carbon dioxide with 7.9% carbon black mass into the activation furnace, and raise the temperature of the activation furnace to 950°C, and react at 950°C for 30 minutes.

Embodiment 3

[0050] according to figure 1 The shown flow process removes the organic matter in the acetylene by-product carbon black, and the specific process flow is:

[0051] A. Drying: put the carbon black (from the by-product of acetylene produced by partial oxidation of natural gas) with a moisture content of 60% in 110°C steam heating and drying equipment, so that the moisture content of the carbon black is reduced to 20%;

[0052] B. Removal: Control the relative pressure of the activation furnace to be 0.2MPa, and isolate oxygen, air and ozone, fill the activation furnace with carbon black with a moisture content of 20%, add radon gas with a mass of 3% of carbon black, and heat up the activation furnace to 150°C, and react at 150°C for 90 minutes; after the reaction, add calcium carbonate with 3% carbon black mass into the activation furnace, and raise the temperature of the activation furnace to 900°C, and react at 900°C for 90 minutes.

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Abstract

The invention belongs to the technical field of gas or steam separation by injecting a reactant, and particularly relates to a method for removing organic matters in a byproduct carbon black of acetylene preparation through partial oxidation of natural gas. The method comprises the following steps: A, drying: reducing the moisture content of carbon black to be less than or equal to 30%; and B, removal: putting the carbon black with the moisture content of less than or equal to 30% into an activation furnace, adding inert gas for a reaction, and adding a weak oxidant into the activation furnacefor an oxidation reaction after the reaction is finished. According to the method, the structure of the carbon black is well modified, organic matters in the carbon black can be effectively removed,and the quality of the carbon black is improved; and environmental pollution is reduced, carbon black is recycled, and a resource utilization rate is increased.

Description

technical field [0001] The invention belongs to the technical field of separating gas or steam by injecting reactants, and in particular relates to a method for removing organic matter in carbon black, a by-product of partial oxidation of natural gas to produce acetylene. Background technique [0002] Acetylene is a very important organic chemical raw material, widely used in metal processing, welding, cutting and other fields, and ethylene, vinyl chloride, trichloroethylene, vinyl acetate, acrylonitrile, polyacrylonitrile, 1,4-butanediol Preparation of chemical products such as "Discussion on the New Progress of Acetylene in Organic Synthetic Chemistry", Bu Zhaosheng, China Chemical Industry Trade, 2015, Vol. Research Progress on Plasma Cracking Low-Carbon Alkanes to Acetylene", Su Baogen et al., Chemical Reaction Engineering and Technology, Vol. 29, No. 3, 2013, pp. 230-236, published on June 30, 2013). The preparation methods of acetylene mainly include non-catalytic par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/56
CPCC09C1/565
Inventor 王萍萍陈林周美均陈天文张发平
Owner CHINA PETROLEUM & CHEM CORP
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