Mixture gas catalytic deoxidation process containing combustible gas

A technology of mixed gas and catalytic deoxidation, which is applied in the fields of gas fuel, fuel, petroleum industry, etc., can solve the problems of high energy consumption, large investment and high cycle ratio of circulating compressors, and achieve the effect of saving energy and reducing usage.

Active Publication Date: 2009-05-06
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the gas circulation ratio is high (the circulation ratio refers to the ratio of the circulation gas volume to the raw gas volume), and the energy consumption and investment of the circulation compressor are relatively large.

Method used

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  • Mixture gas catalytic deoxidation process containing combustible gas
  • Mixture gas catalytic deoxidation process containing combustible gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The raw material mixed gas is divided into two streams after being pressurized by the compressor, and the gas volume of the first raw material mixed gas is 1087Nm 3 / hr is mixed with part of the circulating gas, and the amount of circulating gas is controlled to keep the oxygen content of the mixed gas at 4.1%. Afterwards, the mixed gas is preheated to about 450°C by the raw material mixed gas preheater, and enters the first-stage reactor from the upper part to react and deoxidize. The oxygen content of the reacted gas is 0.2%.

[0034] Another stream of raw material mixed gas is mixed with part of the recycle gas, and the amount of recycle gas is controlled so that the oxygen content of the mixed gas is 6.83%. This part of the mixed gas is divided into two streams, one with a volume of 3859Nm 3 The / hr mixed gas is mixed with the deoxygenated gas from the first-stage reactor in the pipeline, enters the second-stage reactor from the upper part, and deoxidizes in the se...

Embodiment 2

[0043] 10000Nm 3 / hr The raw material mixed gas is divided into three strands after being pressurized by the compressor, of which the gas volume of the first raw mixed gas is 989Nm 3 / hr is mixed with the circulating gas, and the amount of circulating gas is controlled so that the oxygen content of the mixed gas is 4.4%. The mixed gas is preheated to about 325°C by the raw material mixed gas preheater, and enters the first catalyst bed of the reactor from the upper part Reactive deoxygenation. The gas volume of the second raw material mixed gas is 9011Nm 3 / hr, from the side line of the reactor into the upper part of the second catalytic bed. The third remaining raw material mixed gas enters the upper part of the third catalytic bed from the side line of the reactor. The deoxygenated gas from the bottom of the reactor enters the raw material mixed gas preheater to preheat the mixed gas entering the first layer of reactor. The temperature, flow rate and oxygen content of ea...

Embodiment 3

[0052] 10000Nm 3 / hr The raw material mixed gas is divided into three strands after being pressurized by the compressor, of which the gas volume of the first raw mixed gas is 2031Nm 3 / hr is mixed with the circulating gas, and the amount of circulating gas is controlled so that the oxygen content of the mixed gas is 3.5%. The mixed gas is preheated to about 150°C by the raw material mixed gas preheater, and enters the first catalyst bed of the reactor from the upper part Reactive deoxygenation. The gas volume of the second raw material mixed gas is 3183Nm 3 / hr, from the side line of the reactor into the upper part of the second catalytic bed. The third remaining raw material mixed gas enters the upper part of the third catalytic bed from the side line of the reactor. The deoxygenated gas from the bottom of the reactor enters the raw material mixed gas preheater to preheat the mixed gas entering the first layer of reactor. The temperature, flow rate and oxygen content of e...

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Abstract

The invention discloses a catalysis deoxidation process for mixed gas containing inflammable gas. In a reaction system, the inflammable gas in the mixed gas raw material is reacted with oxygen in a catalysis reactor filled with catalyst for deoxidation, and the catalysis reactor comprises a plurality of heat insulation reactors connected in series, wherein the last heat insulation reactor is the main reactor; the mixed gas raw material entered from the first heat insulation reactor is mixed with circulating gas and preheated before entering; and the mixed gas raw material entered from other reactors can directly enter or be mixed with the circulating gas and enter the reactors without preheating. The invention can also be realized in another mode, namely a plurality of reactors connected in series are superimposed to form a multi-layer reactor. The process greatly reduces the consumption of the circulating gas, and achieves the effects of reducing the consumption of catalyst, reducing the sizes of a circulator, a heat exchanger and a pipe, lowering cost, reducing the energy consumption of the circulator and cooling water, increasing byproduct vapor and so on.

Description

technical field [0001] The invention belongs to the technical field of gas deoxidation, in particular to a catalytic deoxidation process of a mixed gas containing combustible gas. Background technique [0002] Methane-containing gases mainly include coal bed methane (commonly known as gas), biogas, landfill gas, etc., and the main flammable components are methane. [0003] Coalbed methane exists in large quantities in coal seams, and is an unconventional natural gas; it is one of the main causes of underground accidents in coal mines. In fact, coalbed methane is a new energy with high calorific value and no pollution. It can be used as fuel for power generation, process fuel, chemical raw material and residential fuel. my country emits about 30 billion cubic meters of coal-bed methane into the atmosphere every year, causing huge environmental pressure and waste of resources. Reasonable and comprehensive utilization of coalbed methane can make up for my country's energy sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10C07C7/148
Inventor 胡文励陶鹏万廖炯毛震波马磊古共伟王晓东陈耀壮曾健
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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