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Temperature equalization process system and method for carbon dioxide methanation synthetic natural gas

A carbon dioxide, process system technology, applied in the petroleum industry, gas fuel, fuel and other directions, can solve the problems of complex operation and high investment in methanation process, and achieve the effect of high catalytic efficiency, reduced investment, and reduced operation difficulty

Pending Publication Date: 2020-01-07
CHINA HUANENG GRP CO LTD +1
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  • Abstract
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Problems solved by technology

Such a long process and multiple sets of reaction heat exchange devices lead to high investment and complicated operation of the methanation process

Method used

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  • Temperature equalization process system and method for carbon dioxide methanation synthetic natural gas

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0036] figure 1 It is the uniform temperature process system for synthesizing natural gas by methanation of carbon dioxide in the present invention, the raw material gas inlet pipe is connected with the first raw material gas branch and the second raw material gas branch, and the first raw material gas flow regulating valve is arranged on the first raw material gas branch FIQ101, the second raw material gas flow regulating valve FIQ102 is installed on the second raw material gas branch; A cooling gas flow regulating valve FIQ103 is provided between a feed gas branch and the inlet of the first heater E201, the tube side outlet of the first tube heat exchanger E101 is connected to the inlet of the first heater E201, and the first heating The inlet of the heater E...

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Abstract

The invention discloses a temperature equalization process system and method for carbon dioxide methanation synthetic natural gas, and belongs to the technical field of coal-prepared natural gas. Theprocess system in which an adiabatic reactor and a tubular temperature equalization reactor are connected in series is adopted, and the adiabatic reactor adopts a circulating and chilling process; mixed gas at an outlet of the adiabatic reactor is divided into two parts, one part is used as inlet reaction gas of the adiabatic reactor, and the other part is used as inlet reaction gas of the tubulartemperature equalization reactor; components of the feed gas are effectively diluted, and carbon load of each section is reduced; an inlet of the adiabatic reactor is also provided with a chilling gas pipeline, and the tubular temperature equalization reactor and a steam pocket form circulating heat exchange, so that the temperature of the tubular temperature equalization reactor is kept uniform,the production capacity of the process system is improved, the concentration of methane in product gas is increased, and a qualified synthetic natural gas product is produced. The process system is reasonable in design, and the number of devices in the system is reduced, so that the investment is reduced, the operation difficulty is reduced, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of coal-to-natural gas, and in particular relates to a uniform temperature process system and method for synthesizing natural gas by methanation of carbon dioxide. Background technique [0002] Today's environmental problems are becoming more and more serious. Global warming, natural disasters and severe weather caused by the greenhouse effect have attracted more and more attention from human beings. The reduction of carbon emissions has gradually attracted the attention of the international community today; the use of carbon dioxide methanation to synthesize natural gas is a way to reduce carbon emissions An effective way, and can realize the reuse of carbon dioxide resources. [0003] CO 2 The methanation reaction is a typical strong exothermic reaction, every conversion of 1% CO 2 The adiabatic temperature rise is about 60°C; CO 2 The conversion rate of methanation reaction decreases with the increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/08
CPCC10L3/08
Inventor 王晓龙何忠郜时旺肖天存许世森
Owner CHINA HUANENG GRP CO LTD
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