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Method of preparing acetylene by partial oxidization of natural gas

A technology for natural gas and acetylene, which is applied in the field of partial oxidation of natural gas to prepare acetylene to achieve the effects of reducing the loss of acetylene gas, increasing profits and reducing emissions

Pending Publication Date: 2020-03-10
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system is only suitable for the closed production process with low oxygen ratio (oxygen ratio ≤ 0.31:1), and it is not suitable for the production process with high oxygen ratio (oxygen ratio> 0.31:1) and open carbon black water tank. The scheme described in US9290384B2

Method used

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  • Method of preparing acetylene by partial oxidization of natural gas
  • Method of preparing acetylene by partial oxidization of natural gas
  • Method of preparing acetylene by partial oxidization of natural gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Adopt following device and method to prepare acetylene, specifically:

[0038] A. Send oxygen and natural gas with an oxygen ratio of 0.545 into oxygen preheating furnace 1 and natural gas preheating furnace 2 respectively, and after preheating to 600-650°C, enter into acetylene furnace 3 for partial oxidation reaction, through heat exchange After the heat-exchanged cold carbon black water provided by the device 9 is quenched, the cracked gas having a temperature of 89° C. and containing acetylene is obtained;

[0039] B. The cracked gas obtained in step A passes through the lower section of the cooling tower 4, the electrostatic precipitator 5 and the upper section of the cooling tower 4 in turn, and enters the cracked gas main pipe after being cooled to 35°C;

[0040] C. After the carbon black water produced in the acetylene furnace 3, the cooling tower 4 and the electrostatic precipitator 5 enters the carbon black water main pipe, it is delivered to the vacuum air st...

Embodiment 2-6 and comparative example 1

[0047] Examples 2-6 and Comparative Example 1 were carried out according to the conditions shown in Table 2, and the others were the same as Example 1.

[0048] Table 2 embodiment 2-6 and comparative example 1

[0049]

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Abstract

The invention belongs to the technical field of preparing hydrocarbons from low-carbon-atom hydrocarbons through partial combustion and particularly relates to a method of preparing acetylene by partial oxidization of natural gas. The method includes steps of: (A) respectively feeding oxygen and natural gas into a preheating furnace for preheating and feeding the mixed gas into a mixing chamber ofan acetylene reaction furnace, and feeding the mixed gas into a combustion chamber of the acetylene reaction furnace for reaction, the reaction being terminated through water quenching; (B) enablingthe cracked gas containing acetylene successively to pass through the lower section of a cooling tower, an electric dust remover and the upper section of the cooling tower and to be fed into an acetylene concentrating system by means of a compressor; (C) feeding carbon black liquid generated in the acetylene reaction furnace, the electric dust remover and the cooling tower into a carbon black liquid header pipe, and feeding the carbon black liquid into a vacuum stripping column to remove the organic gas therein, and feeding the carbon black liquid into an opened carbon black tank, and coolingthe treated carbon black liquid in a hyperbolic cooling tower. The method is suitable for a production process with high oxygen ratio and the opened carbon black tank.

Description

technical field [0001] The invention belongs to the technical field of preparing hydrocarbons from hydrocarbons containing less carbon atoms through a partial combustion method, and in particular relates to a method for preparing acetylene by partial oxidation of natural gas. 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...

Claims

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Application Information

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IPC IPC(8): C07C2/82C07C7/00C07C11/24
CPCC07C2/82C07C7/00C07C11/24
Inventor 陈天文王萍萍张发平曹宝山柯月亮
Owner CHINA PETROLEUM & CHEM CORP
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