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Process for the manufacture of carbon disulphide and use of a liquid stream comprising carbon disulphide for enhanced oil recovery

A carbon disulfide, carbon dioxide technology, applied in the direction of carbon disulfide, carbon sulfur compounds, chemical instruments and methods, etc.

Inactive Publication Date: 2009-07-22
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of using hydrocarbons as carbon sources to produce carbon disulfide is that the hydrogen atoms in the hydrocarbons react with elemental sulfur to form hydrogen sulfide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 (the present invention)

[0040] With 15 grams of liquid sulfur and 7.1 grams of specific surface area of ​​300g / m 2 A catalyst bed of gamma alumina clover (diameter 1.3 mm, length / diameter ratio 3) filled the reactor tube (12 mm inner diameter). A gaseous stream consisting of 85.5 vol% nitrogen and 14.5 vol% carbon monoxide was bubbled through the reactor tube at a flow rate of 3.9 standard liters / hour at a pressure of 10 bar (abs.) during 60 seconds. In different experiments, the reactor tubes were kept at different temperatures (270-420°C). The composition of the gaseous reactor effluent was analyzed by gas chromatography. In Table 1 the overall conversion of carbon monoxide and the conversion of carbon monoxide to carbon disulfide are shown. In all experiments, the disproportionation reaction, ie the conversion of carbonyl sulfide to carbon disulfide and carbon dioxide, reached thermodynamic equilibrium.

[0041] Table 1 uses the experiment of catal...

Embodiment 2

[0043] Embodiment 2 (comparative example)

[0044] The reactor tube (12 mm internal diameter) was filled with 32 grams of liquid sulfur. The reactor tubes did not contain catalyst. A gaseous stream consisting of 80 vol% nitrogen and 20 vol% carbon monoxide was bubbled through the reactor tube at a flow rate of 3.0 standard liters / hour at a pressure of 10 bar (abs.) for 50 seconds. In different experiments, the reactor tubes were kept at different temperatures (370-520°C). The composition of the gaseous reactor effluent was analyzed by gas chromatography. In Table 2 the overall conversion of carbon monoxide and the conversion of carbon monoxide to carbon disulfide are shown.

[0045] Table 2 does not use the experiment of catalyst (embodiment 2)

[0046] experiment T(℃) CO conversion rate (%) Convert to CS 2 CO conversion rate (%) 5 370 10 0.03 6 420 30 0.04 7 520 98 0.3

[0047] The results show that reaction (1) (ie conversion of c...

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Abstract

The invention provides a process for the manufacture of carbon disulphide by reacting carbon monoxide with elemental sulphur to form carbonyl sulphide and disproportionating the carbonyl sulphide formed into carbon disulphide and carbon dioxide, the process comprising contacting a gaseous stream comprising carbon monoxide with a liquid elemental sulphur phase containing a solid catalyst at a temperature in the range of from 250 to 700 DEG C to obtain a gaseous phase comprising carbonyl sulphide, carbon disulphide and carbon dioxide. The invention further provides the use of a liquid stream comprising carbon disulphide, carbonyl sulphide and carbon dioxide obtainable by such process for enhanced oil recovery.

Description

technical field [0001] The present invention provides a process for the production of carbon disulphide and the use of a liquid stream obtainable therefrom comprising carbon disulphide, carbonyl sulphide and carbon dioxide for enhanced oil recovery. Background technique [0002] Carbon disulfide is generally produced by reacting light saturated hydrocarbons with gas-phase elemental sulfur according to the following reaction equation: [0003] C n h 2(n+1) +(3n+1)S→nCS 2 +(n+1)H 2 S [0004] For example, GB 1,173,344 discloses a process for reacting sulfur and propane in the gas phase in a reaction zone maintained at a temperature of 550-850°C at a pressure not exceeding 10 atmospheres in the absence of a catalyst. [0005] US 3,087,788 discloses a process for the production of carbon disulfide from hydrocarbon gas and gaseous sulfur in a non-catalytic reaction stage combined with a preferably subsequent catalytic reaction stage, wherein the two stages operate at a press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/26C01B31/20B01J21/04B01J21/12B01J21/06C01B31/18C01B31/02C01B32/40C01B32/50
CPCB01J21/04C01B31/262C01B31/20C01B32/50C01B32/72
Inventor C·M·A·M·梅斯特斯R·J·斯洪比克
Owner SHELL INT RES MAATSCHAPPIJ BV
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