Process for synthesizing natural gas employing methanation of calcium carbide furnace gas

A technology of furnace gas methane and a process method is applied in the application field of comprehensive utilization of new energy, and achieves the effects of low energy consumption, reasonable process design and improved energy utilization rate

Inactive Publication Date: 2013-10-09
EAST CHINA ENG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Process for synthesizing natural gas employing methanation of calcium carbide furnace gas
  • Process for synthesizing natural gas employing methanation of calcium carbide furnace gas
  • Process for synthesizing natural gas employing methanation of calcium carbide furnace gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 The process method for synthesizing natural gas from calcium carbide furnace gas is shown.

[0041] The composition of calcium carbide furnace gas is as follows:

[0042]

[0043] Calcium carbide furnace gas from gas cabinet 20000Nm 3 / h, the tar and dust are removed by the electric tar catcher, so that the tar and dust content in the outlet gas is less than 10mg / Nm 3 .

[0044] The calcium carbide furnace gas from which tar and dust have been removed is compressed to 2.6 MPa by the reciprocating compressor and the temperature is about 50 °C, which is slightly higher than the dew point of the water vapor in the furnace gas, and enters the calcium carbide furnace gas purification process.

[0045] The calcium carbide furnace gas from the last stage outlet of the calcium carbide furnace gas compressor and after cooling (50°C) first enters the oil suction tank to remove the trace amount of tar in the calcium carbide furnace gas and the oil entrained in ...

Embodiment 2

[0051] like figure 1 The process method for synthesizing natural gas from calcium carbide furnace gas is shown.

[0052] The composition of calcium carbide furnace gas is as follows:

[0053]

[0054] Calcium carbide furnace gas from gas cabinet 40000Nm 3 / h, the tar and dust are removed by the electric tar catcher, so that the tar and dust content in the outlet gas is less than 10mg / Nm 3 .

[0055] The calcium carbide furnace gas from which tar and dust have been removed is compressed to 2.5MPa by the reciprocating compressor, and the temperature is about 50℃, which is slightly higher than the dew point of the water vapor in the furnace gas, and enters the calcium carbide furnace gas purification process.

[0056] The calcium carbide furnace gas from the last stage outlet of the calcium carbide furnace gas compressor and after cooling (50°C) first enters the oil suction tank to remove the trace amount of tar in the calcium carbide furnace gas and the oil entrained in th...

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Abstract

The invention provides a process for synthesizing natural gas employing methanation of calcium carbide furnace gas, and belongs to the technical field of new energy utilization. Specifically, the calcium carbide furnace gas coming from an upstream gas holder is subjected to steps of electrically precipitating tar, boosting by a compressor, purifying, CO transforming, decarburization, entering into one or more methanation reactors and separating natural gas, and thus the natural gas, which is accord with the standard of technical specification (first class) in natural gas GB (GB17820-2012), is prepared. The objective of high-efficiency integrative utilization of the calcium carbide furnace gas is realized, and the method is a new approach for producing natural gas.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization and application of new energy, and relates to a process method for producing natural gas by methanating calcium carbide furnace gas synthesis gas. Background technique [0002] Natural gas is a high-quality, efficient and clean low-carbon energy. Accelerating the development of the natural gas industry and increasing the proportion of natural gas in primary energy consumption has important strategic significance for my country to adjust the energy structure, improve people's living standards, promote energy conservation and emission reduction, and respond to climate change. my country's "Twelfth Five-Year Plan" for energy development proposes that the proportion of natural gas in total primary energy consumption will increase by 4.4 percentage points within five years, reaching 7.5% by 2015. [0003] In 2010, my country's natural gas dependence on foreign countries has exceeded ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/08
Inventor 胡文生
Owner EAST CHINA ENG SCI & TECH
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