Preparation of adsorbents from organic fertilizer and mineral oil and their application for removal of acidic gases from sulfur containing wet gas streams
First Claim
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1. A process for removing one or more acidic gas or gases from wet gas streams comprising:
- (a) forming an adsorbent by thermally drying dewatered sewage sludge to form granulated organic fertilizer;
(b) treating the fertilizer with mineral oil;
(c) pyrolyzing the treated fertilizer at a pyrolysis temperature between about 600°
C. and about 1000°
C.;
(d) contacting the adsorbent with a wet gas stream; and
(e) allowing the adsorbent to adsorb the acidic gas or gases.
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Abstract
A method of making an adsorbent which includes: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; b) treating the fertilizer with mineral oil; and c) pyrolyzing the treated fertilizer at temperatures between about 600° C. and about 1000° C. The disclosure is also directed to adsorbents made by this method and to the processes of removing acidic gas or gases from wet gas streams by putting an adsorbent in contact with the wet gas stream and allowing the adsorbent to adsorb the acidic gas or gases.
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Citations
20 Claims
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1. A process for removing one or more acidic gas or gases from wet gas streams comprising:
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(a) forming an adsorbent by thermally drying dewatered sewage sludge to form granulated organic fertilizer; (b) treating the fertilizer with mineral oil; (c) pyrolyzing the treated fertilizer at a pyrolysis temperature between about 600°
C. and about 1000°
C.;(d) contacting the adsorbent with a wet gas stream; and (e) allowing the adsorbent to adsorb the acidic gas or gases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A process for making an adsorbent, comprising:
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(a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; (b) treating the fertilizer with mineral oil; (c) pyrolyzing the treated fertilizer at a pyrolysis temperature between about 600°
C. and about 1000°
C. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19, 20)
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Specification