Method for desulphurisation of natural gas

A removal, gaseous technology, applied in the direction of separation methods, chemical instruments and methods, gas fuels, etc., can solve the problem of high commercial costs

Inactive Publication Date: 2005-08-10
STICHTING ENERGIEONDERZOEK CENT NEDERLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the large amount of silver in the zeolite, the commercial cost will be high

Method used

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  • Method for desulphurisation of natural gas
  • Method for desulphurisation of natural gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] In this example sepiolite (obtained as dust-free catlitter granules, >80% (m / m) sepiolite and <20% (m / m) zeolite) With many commonly used adsorbents such as activated carbon (Norit, code RB1; peat-based, steam-activated, extruded, unimpregnated), activated carbon impregnated with copper and chromium (Norit, code RGM1; peat-based, steam-activated and impregnated ); and copper oxide / zinc oxide / alumina (BASFR3-12; metal / metal oxide) for comparison. The sepiolite of the present invention is capable of binding the most sulfur.

[0076]

[0077] THT adsorption test results

[0078] The THT efflux curve of the above-mentioned adsorbent samples (the concentration of THT in natural gas after filtering is plotted against the efflux time) at figure 1 given in. The efflux curves clearly show that sepiolite (sepiolite sample SA1) adsorbs 5 to 10 times more THT than activated carbon and copper oxide / zinc oxide / alumina materials. With the exception of sepiolite, a highly...

Embodiment 2

[0083] In this example, sepiolite (the same as in Example 1) was mixed with attapulgite (calcined clay particles, 85% (m / m)) under the same conditions as in Example 1 as the refractory soil waste. Attapulgite, from Tijssen, Hazerswoude, The Netherlands) and a naturally occurring clay mineral, bentonite (refractory clay granules, agglomerates, coarse material). These materials can be obtained from grocery stores and the like.

[0084] refer to figure 2 , it can be seen that compared with these materials, sepiolite (sample SA1) is able to adsorb more sulfur than bentonite (sample SA4) and attapulgite (sample SA2).

[0085] Experimental equipment and test conditions of embodiment 3-6

[0086]The present adsorption experiments were carried out in a manually operated flow plant connected to a natural gas supply network at 100 mbar (o) (o = overpressure) by means of two on / off taps and an overflow protection device (needle valve) middle. (Cylinder) gas can also be connected via...

Embodiment 3-5

[0096] Examples 3-5: Impregnation with copper

[0097] Accurately weigh 25 grams of sepiolite with a particle size of 0.5-1.0 mm and place in a glass beaker. In the so-called "dry impregnation" (incipient wetness), the amount of sepiolite is capable of absorbing a maximum of about 40 ml of water. Then, 1.57 grams of copper acetate was weighed out and dissolved in approximately 40 milliliters of demineralized water in a beaker with the aid of approximately 10 minutes of room temperature vibration in an ultrasonic bath. Then, the sepiolite was impregnated with the resulting solution by dry impregnation. After brief manual stirring, the impregnated sepiolite was dried in a drying cabinet at 40° C. for a minimum of 24 hours in air. Material dried in this way contained approximately 2% (m / m) Cu 2+ , and are ready for adsorption assays. Prepared in the same manner as above containing 5% (m / m) Cu 2+ sample.

[0098] Results: Table 4 shows the measured adsorpt...

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Abstract

The invention relates to a method for the removal of gaseous organo-sulphur compounds, in particular THT, from fuel gas streams. The method comprises bringing the gas stream into contact with an adsorbent, with a clay mineral from the hormite group, such as palygorskite, attapulgite, sepiolite and paramomtmorillonite as adorbent. In particular, the clay mineral is sepiolite and the fuel gas stream comprises natural gas. In this way large gas volumes can be purified for a prolonged period with the aid of an environmenetally friendly and inexpensive adsorbent. The invention also relates to a combination of a gas filter based on a clay mineral from the hormite group and a fuel cell. The invention also relates to a method wherein the clay mineral has been provided with a metal salt or a metal oxide, or a method wherein the clay mineral is combined with a second adsorbent.

Description

technical field [0001] The present invention relates to a process for the removal of organosulfur compounds, especially tetrahydrothiophene (THT), from fuel gas streams, especially natural gas. For example, the method according to the invention can be used in a gas filter for removing organic sulfur compounds from natural gas of a PEMFC fuel cell. Background technique [0002] "Polymer Electrolyte (or Proton Exchange) Membrane Fuel Cells" (PEMFCs) are important candidates for smaller-scale applications of static micro-CHP and electricity transport. The fuel of PEMFC is hydrogen. Since there is no (large-scale) infrastructure to date, the successful use of PEMFCs in the short term depends on the availability of hydrogen. Therefore, a great deal of work is currently being carried out worldwide on small-scale catalytic fuel conversion systems to generate hydrogen in fuel cells from logistics fuels such as diesel, gasoline, naphtha, liquefied petroleum gas,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01J20/02B01J20/12B01J20/18B01J20/20B01J20/32C10G67/06C10L3/10H01M8/04H01M8/06H01M8/10
CPCB01J20/06B01J2220/42B01J20/3204B01J20/3408B01J20/14B01J20/18C10L3/10B01J20/3433B01J20/0288B01J20/08C10G2400/14B01J20/0229B01J20/103B01J20/12B01J2220/603B01J20/3236B01J20/0237B01J20/165B01J20/3483B01J20/0218B01J20/02B01J20/20B01J20/0222B01J20/0225
Inventor 保卢斯·约翰内斯·德维尔德
Owner STICHTING ENERGIEONDERZOEK CENT NEDERLAND
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