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Method for the suppression of soot formation in an atr or pox reactor

A reactor, soot technology, applied in chemical instruments and methods, hydrogen/syngas production, products, etc., can solve problems such as expensive, pipeline fouling, carbon source loss, etc.

Pending Publication Date: 2021-10-12
CASALE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, production of CO-containing gases from hydrocarbon sources requires substoichiometric combustion, which can lead to undesirable soot formation
Soot formation has several disadvantages: loss of carbon source, which cannot be converted to CO as desired; fouling and clogging of pipes; regular cleaning is required, which is expensive and requires disposal of pollutants and potential carcinogens
These technologies, and more generally all technologies based on high speeds, swirlers and changes in flow direction, have the disadvantage of introducing significant pressure losses

Method used

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  • Method for the suppression of soot formation in an atr or pox reactor
  • Method for the suppression of soot formation in an atr or pox reactor

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Experimental program
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Embodiment Construction

[0040] exist figure 1 , curve I involves no addition of CO to the feedstock 2 The base case of , curve II involves the same process as the base case, where the addition to the feed gas makes m CO2 / m C CO in an amount of 0.25 2 .

[0041] exist figure 2 , curve I involves no addition of CO to the feedstock 2 base case; Curve II involves adding such that m CO2 / m C = 0.25 CO 2 , curve III involves such that m CO2 / m C = 0.66 CO 2 .

[0042] figure 1 and figure 2 All the curves for , show that soot formation starts at higher S / C values ​​compared to the base case. In other words, adding CO2 The critical S / C for soot is reduced, which means that the process can be run at a lower S / C to save steam without causing soot formation. figure 2 It shows that adding more carbon dioxide further reduces the critical S / C, which can be seen from the comparison of curve II and curve III.

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Abstract

Disclosed is a method for the suppression of soot formation during the partial oxidation of a hydrocarbon-containing gaseous feed, and, in the presence of steam and in an ATR reactor or in a POX reactor, the method comprises the addition of gaseous carbon dioxide to the hydrocarbon-containing gaseous feed before entry into the reactor. A method for determining a minimum steam to carbon ratio required for scot-free operation is also disclosed.

Description

technical field [0001] The present invention relates to an ATR reactor and a POX reactor. In particular, the present invention relates to a method of suppressing soot formation in an ATR reactor or a POX reactor. Background technique [0002] Autothermal reforming (ATR) reactors and partial oxidation (POX) reactors are widely used in the field of synthesis gas production. [0003] The ATR reactor can be used as a stand-alone synthesis gas generation unit, or it can be used for secondary reforming after primary steam reforming in a combustion furnace. An ATR reactor fed from air or enriched air is often referred to as a secondary reformer. In contrast, POX systems are an alternative technology typically used to convert preheated hydrocarbon gases and oxidants. [0004] Autothermal reforming takes place in the presence of a catalyst while partial oxidation takes place in the absence of a catalyst. For ATR (at the catalyst bed inlet) the temperature can be around 1000 to 13...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/36C01B3/38
CPCC01B3/36C01B3/382C01B2203/0255C01B2203/0244C01B2203/16Y02P20/141C01B3/38C01B2203/1235C01B2203/169
Inventor 卢卡·扎尼凯利贾科莫·科梅尼亚
Owner CASALE SA