CA1184035A - Catalytic coal product and method of gasification - Google Patents
Catalytic coal product and method of gasificationInfo
- Publication number
- CA1184035A CA1184035A CA000411229A CA411229A CA1184035A CA 1184035 A CA1184035 A CA 1184035A CA 000411229 A CA000411229 A CA 000411229A CA 411229 A CA411229 A CA 411229A CA 1184035 A CA1184035 A CA 1184035A
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- Prior art keywords
- finely divided
- calcium compound
- mixture
- mesh
- product
- Prior art date
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
Case: ICR 3006 CATALYTIC COAL PRODUCT AND METHOD OF GASIFICATION
ABSTRACT
A catalyzed gasification feed product and process comprising providing a mixture of finely divided carbonaceous material particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh, gasifying the carbonaceous material, the gasifying comprising heating the mixture of finely divided carbonaceous material and finely divided calcium compound to form a carbonaceous suspension of calcium compound whereby the calcium compound catalyzes the gasification.
ABSTRACT
A catalyzed gasification feed product and process comprising providing a mixture of finely divided carbonaceous material particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh, gasifying the carbonaceous material, the gasifying comprising heating the mixture of finely divided carbonaceous material and finely divided calcium compound to form a carbonaceous suspension of calcium compound whereby the calcium compound catalyzes the gasification.
Description
Case: IC~ 3006 3~
CATALYTIC COAL PRODUCT AND METHOD O~ GASIFICATIOM
BACKGROUND OF THE INVENTION
Stambaugh et al United States Patent 4,092,125 discuss prior art methods of impregnating coal with a catalyst by (a) physical admixing of catalyst to coal or (b) soaking the coal in an aqueous solu-tion of catalyst at room temperature and then drying the slurry. Stambaugh et al discloses a method of treating fine particles of solid carbonaceous fuel of a coal or coke type that comprises mixing the fuel particles with a liquid aqueous solution comprising essentially (a) sodium, potassium or lithium hydroxide together with (b) calcium, magnesium or barium hydroxide or carbonate.
Lancet in U.S. Patent No. 4,248,605 discloses a method of gasifying the bottoms fraction from a coal liqueEaction process by mixing the bottoms fraction with at least one finely divided calcium compound selected from the group consisting of calcium oxide, calcium carbonate and calcium hydroxide with the calcium compound being of a size consist no larger than about minus 200 Tyler mesh and present in an amount sufficient to produce agglom-erate particles upon mixing with the bottoms fraction and there-after gasifying the resulting agglomerate particles by reacting the agglomerate particles with steam in a fluidized bed.
Case: ICR 3006 SUMMARY OF THE INVENTION
A ca-talyzed gasification process comprising providing a mixture of finely divided solid particles of carbonaceous material of a size smaller than 65 Tyler mesh and finely divided particles o a calcium compound, of a size smaller than 65 Tyler Mesh and gasifying the mixture of finely divided solid particles of car-bonaceous material and finely divided par-ticles of calcium compound.
A gasification feed product comprising a carbonaceous suspension of a calcium compound made by heating a mixture of finely divided carbonaceous particles of a size smaller than 65 Tyler mesh and finely divided particles of calcium compound of a size smaller than 65 Tyler mesh.
The operable range of ratios of carbonaceous material to calcium compound is from 98:2 to 30:70. ~ixtures of carbon-aceous material and calcium compound within this range or ratios with 10 percent or less than 10 percent calclum compound are preferred for catalyzed gasiication. Whlle mixture o carbon-aceous material and calcium compound within this range or ratios with 10 percent or more than 10 percent calcium compound are preferred or raising the ash fusion temperature.
Throughout this specification and claims mesh means Tyler mesh.
Case: ICR 3006 DETAILED DISCUSSION OF T~E INVENTION
In the field of catalytic coal gasification, a problem of continuing concern has been the chemical and physical incor-poration of a suitable gasification catalyst in the coal. For 5 example, U.S. Patent No. 4,092,125 discloses a chemical and physical incorporation of a suitable gasification catalyst in coal by hydrothermally treating the coal. The coal thus treated is a feedstock for a gasification.
The present invention is directed to a new feedstock for gasification as well as a process of gasifying coal.
To carry out the present invention coal is ground and mixed with grouncl calcium compound. This mixture of ground coal and ground calcium compound is then gasified. ~ preferred coal for use in the process of the present invention is bituminous coal from Eastern United States called Eastern Coal. By the use of the present invention Eastern coal is formed into an improved gasification feedstock.
In a preferred embodiment of the invention, the mix-ture of ground coal and ground calcium compound are pelletized prior to gasification. For example, the mixtuxe of coal and calcium compound may be briquetted.
In another preferred embodiment of the invention, the mixture of ground coal and ground calcium compound is extruded in an extruder into a gasifier for gasification.
. 3 Case: ICR 3006 In coal gasification by the present invention coal may be contacted with water by the following reaction C + H20 ~ CO + H2 (I) Additionally, the CO may react with water as ~ollows CO + H20 ~ CO2 + H2 ~II) The calcium compound in the ground coal- ground calcium compound mixture may be calcium oxide which when heated in the presence of C02 such as that formed in reaction II above would react as follows CaO + CO2 -~ CaC03 (III) This reaction of calclum oxide with carbon dioxide is exothermic and produces sufficient heat to maintain the desired reaction temperature in the reactor wherein gasification is occurrlng for high ratios of Ca to C.
Reactions I, II and III all occur in the reactor which receives the pelletized mixture of finely divided carbonaceous material and finely divided calcium compound.
The present invention relates to a catalyzed gasi-fication process wherein the mixture of f.inely divided carbonaceous material and finely divided calcium compound particles is gasified after heating the mixture to form a carbonaceous suspension of calcium compound whereby the calcium compound catalyzes the gasification of the carbonaceous material. Because of the intimate contact between the small particles of carbonaceous Case: ICR 3006 ~ 5 material and calcium compound in the mixture of solids, when the solids mixture is liquified to form a suspension of calcium compound in carbonaceous material, the distribution of calcium compound in the suspension of carbonaceous material is sufficient for catalysis of the gasification of carbonaceous material during heating.
In a preferred embodiment of the invention, gasifica-tion is carried out by maintaining the mixture of finely divided carbonaceous material and finely divided calcium compound at 300 to 550C for from 1 to 30 minutes during which time the mixture becomes a suspension of liquified carbonaceous material having calcium compound intimately dispersed therethrough. More preferably, the mixture of finely divided carbonaceous material and finely divided calcium compound is maintained within the temperature range of from 350 to 500C for 1 to 30 minutes. Most preferably, the mixture of calcium compound and carbonaceous material is maintained from 400 to 450C for about 20 minutes.
Preferred calcium compounds :Eor use in the present invention as the finely divided calcium material include lime, calcium carbonate or calcium hydroxide. Preferred carbonaceous material for use as the finely divided carbonaceous material in the present invention include Eastern U.S. bituminous coal, and coal generally~ The suspension of catalyzed carbonaceous material formed by the liquifying of a mixture of finely divided carbonaceous material and finely divided calcium compound Case: ICR 3006 form a coke product. This coke product may be gasified by any process which will accep~ coke or char as the feed. For example, the coke product may be brlquetted and fed to a fixed bed gasifier such as those described at pages 1634 to 1639 of Elliott, Chemistry of Coal Utilization, Second Supplementary Volume, 1981. Alter-natively, the product of the present invention may be fed by a screw-type feeding system as the gasifier fuel such screw-type feeder is shown in Fernandes, U.S. Patent 3,920,417. During gasification -the mixture of carbonaceous material and calcium compound may be contacted with molecular oxygen or air or steam or rnixtures of the aforesaid air, oxygen and water. The water preferably being in the form of steam. The carbonaceous material and the calcium compound material in the mixture to be gasified by the process of the present invention is preferably in a ratio of 1:1 or greater. Most preferably for catalyzed gasification, the mixture of carbonaceous material and calcium compound of the present invention has 3 to 10 percent by weiyht calcium compound material with the remainder of mixture being carbonaceous material i.e. 90 to 97 weight percent carbonaceous material.
Within the scope of the invention is a gasi~ication feed product having a carbonaceous suspension of calcium compound made by heating a mixture of finely divided carbonaceous particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh. The calcium compound is preferably a compound of calcium selected from a group Case: ICR 3006 3 5 consisting o~ calcium oxide, calcium carbonate and calcium hydroxide. More preEerably the particle size of both the finely divided carbonaceous material and the finely divided calcium compound is smaller than 100 mesh. Especially preferably S the particle size of the finely divided calcium compound and the finely divided carbonaceous material is less than 200 mesh. Most preferred is finely divided calcium compound of particle size less than 325 mesh.
The mixture of -65 mesh finely divided 90 to 97 weight percent carbonaceous material and 3 to 10 weight percent calcium compound gasifies catalyticly.
Mixtures of -65 mesh about 50% finely divided car-bonaceous material and about 50% finely divided calcium compound produce sufficient heat in the top of the gasifier to destroy tars which would leave the gasifier with the product gas and require additional processing to separate them.
Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char ls then gasified upon moving down the bed.
3~
Case: ICR 3006 Ninety-five pounds of Eastern U.S. coal is ground -to -100 Tyler mesh. Five pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 Ninety-two pounds of Eastern U.S. coal is ground to ~100 Tyler mesh. Elght pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char is then gasified upon moving down the bed.
~8~35 Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calclum oxide is ground to -20Q Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a fixed bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
f~33~
Case: ICR 3006 ^ EXAMPLE 5 Ninety~five pounds of Eastern U.S. coal is ground to -100 Tyler mesh. Five pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a fixed bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Bastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a moving bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 The procedure of the invention shows increases of gasification reaction rates 3 to 6 times those of uncatalyzed pior methods.
Having thus described the present invention by reference S to certain of its preferred embodiments, it is respectfully pointed out that the embodiments set forth are illustrative rather than limiting in nature and that many variations and modifications are possible within the scope of the present invention. It is expected that many such variations and modifi-cations will appear obvious and desirable to those skilled in theart based upon a review of the foregoing description of preferred embodiments.
CATALYTIC COAL PRODUCT AND METHOD O~ GASIFICATIOM
BACKGROUND OF THE INVENTION
Stambaugh et al United States Patent 4,092,125 discuss prior art methods of impregnating coal with a catalyst by (a) physical admixing of catalyst to coal or (b) soaking the coal in an aqueous solu-tion of catalyst at room temperature and then drying the slurry. Stambaugh et al discloses a method of treating fine particles of solid carbonaceous fuel of a coal or coke type that comprises mixing the fuel particles with a liquid aqueous solution comprising essentially (a) sodium, potassium or lithium hydroxide together with (b) calcium, magnesium or barium hydroxide or carbonate.
Lancet in U.S. Patent No. 4,248,605 discloses a method of gasifying the bottoms fraction from a coal liqueEaction process by mixing the bottoms fraction with at least one finely divided calcium compound selected from the group consisting of calcium oxide, calcium carbonate and calcium hydroxide with the calcium compound being of a size consist no larger than about minus 200 Tyler mesh and present in an amount sufficient to produce agglom-erate particles upon mixing with the bottoms fraction and there-after gasifying the resulting agglomerate particles by reacting the agglomerate particles with steam in a fluidized bed.
Case: ICR 3006 SUMMARY OF THE INVENTION
A ca-talyzed gasification process comprising providing a mixture of finely divided solid particles of carbonaceous material of a size smaller than 65 Tyler mesh and finely divided particles o a calcium compound, of a size smaller than 65 Tyler Mesh and gasifying the mixture of finely divided solid particles of car-bonaceous material and finely divided par-ticles of calcium compound.
A gasification feed product comprising a carbonaceous suspension of a calcium compound made by heating a mixture of finely divided carbonaceous particles of a size smaller than 65 Tyler mesh and finely divided particles of calcium compound of a size smaller than 65 Tyler mesh.
The operable range of ratios of carbonaceous material to calcium compound is from 98:2 to 30:70. ~ixtures of carbon-aceous material and calcium compound within this range or ratios with 10 percent or less than 10 percent calclum compound are preferred for catalyzed gasiication. Whlle mixture o carbon-aceous material and calcium compound within this range or ratios with 10 percent or more than 10 percent calcium compound are preferred or raising the ash fusion temperature.
Throughout this specification and claims mesh means Tyler mesh.
Case: ICR 3006 DETAILED DISCUSSION OF T~E INVENTION
In the field of catalytic coal gasification, a problem of continuing concern has been the chemical and physical incor-poration of a suitable gasification catalyst in the coal. For 5 example, U.S. Patent No. 4,092,125 discloses a chemical and physical incorporation of a suitable gasification catalyst in coal by hydrothermally treating the coal. The coal thus treated is a feedstock for a gasification.
The present invention is directed to a new feedstock for gasification as well as a process of gasifying coal.
To carry out the present invention coal is ground and mixed with grouncl calcium compound. This mixture of ground coal and ground calcium compound is then gasified. ~ preferred coal for use in the process of the present invention is bituminous coal from Eastern United States called Eastern Coal. By the use of the present invention Eastern coal is formed into an improved gasification feedstock.
In a preferred embodiment of the invention, the mix-ture of ground coal and ground calcium compound are pelletized prior to gasification. For example, the mixtuxe of coal and calcium compound may be briquetted.
In another preferred embodiment of the invention, the mixture of ground coal and ground calcium compound is extruded in an extruder into a gasifier for gasification.
. 3 Case: ICR 3006 In coal gasification by the present invention coal may be contacted with water by the following reaction C + H20 ~ CO + H2 (I) Additionally, the CO may react with water as ~ollows CO + H20 ~ CO2 + H2 ~II) The calcium compound in the ground coal- ground calcium compound mixture may be calcium oxide which when heated in the presence of C02 such as that formed in reaction II above would react as follows CaO + CO2 -~ CaC03 (III) This reaction of calclum oxide with carbon dioxide is exothermic and produces sufficient heat to maintain the desired reaction temperature in the reactor wherein gasification is occurrlng for high ratios of Ca to C.
Reactions I, II and III all occur in the reactor which receives the pelletized mixture of finely divided carbonaceous material and finely divided calcium compound.
The present invention relates to a catalyzed gasi-fication process wherein the mixture of f.inely divided carbonaceous material and finely divided calcium compound particles is gasified after heating the mixture to form a carbonaceous suspension of calcium compound whereby the calcium compound catalyzes the gasification of the carbonaceous material. Because of the intimate contact between the small particles of carbonaceous Case: ICR 3006 ~ 5 material and calcium compound in the mixture of solids, when the solids mixture is liquified to form a suspension of calcium compound in carbonaceous material, the distribution of calcium compound in the suspension of carbonaceous material is sufficient for catalysis of the gasification of carbonaceous material during heating.
In a preferred embodiment of the invention, gasifica-tion is carried out by maintaining the mixture of finely divided carbonaceous material and finely divided calcium compound at 300 to 550C for from 1 to 30 minutes during which time the mixture becomes a suspension of liquified carbonaceous material having calcium compound intimately dispersed therethrough. More preferably, the mixture of finely divided carbonaceous material and finely divided calcium compound is maintained within the temperature range of from 350 to 500C for 1 to 30 minutes. Most preferably, the mixture of calcium compound and carbonaceous material is maintained from 400 to 450C for about 20 minutes.
Preferred calcium compounds :Eor use in the present invention as the finely divided calcium material include lime, calcium carbonate or calcium hydroxide. Preferred carbonaceous material for use as the finely divided carbonaceous material in the present invention include Eastern U.S. bituminous coal, and coal generally~ The suspension of catalyzed carbonaceous material formed by the liquifying of a mixture of finely divided carbonaceous material and finely divided calcium compound Case: ICR 3006 form a coke product. This coke product may be gasified by any process which will accep~ coke or char as the feed. For example, the coke product may be brlquetted and fed to a fixed bed gasifier such as those described at pages 1634 to 1639 of Elliott, Chemistry of Coal Utilization, Second Supplementary Volume, 1981. Alter-natively, the product of the present invention may be fed by a screw-type feeding system as the gasifier fuel such screw-type feeder is shown in Fernandes, U.S. Patent 3,920,417. During gasification -the mixture of carbonaceous material and calcium compound may be contacted with molecular oxygen or air or steam or rnixtures of the aforesaid air, oxygen and water. The water preferably being in the form of steam. The carbonaceous material and the calcium compound material in the mixture to be gasified by the process of the present invention is preferably in a ratio of 1:1 or greater. Most preferably for catalyzed gasification, the mixture of carbonaceous material and calcium compound of the present invention has 3 to 10 percent by weiyht calcium compound material with the remainder of mixture being carbonaceous material i.e. 90 to 97 weight percent carbonaceous material.
Within the scope of the invention is a gasi~ication feed product having a carbonaceous suspension of calcium compound made by heating a mixture of finely divided carbonaceous particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh. The calcium compound is preferably a compound of calcium selected from a group Case: ICR 3006 3 5 consisting o~ calcium oxide, calcium carbonate and calcium hydroxide. More preEerably the particle size of both the finely divided carbonaceous material and the finely divided calcium compound is smaller than 100 mesh. Especially preferably S the particle size of the finely divided calcium compound and the finely divided carbonaceous material is less than 200 mesh. Most preferred is finely divided calcium compound of particle size less than 325 mesh.
The mixture of -65 mesh finely divided 90 to 97 weight percent carbonaceous material and 3 to 10 weight percent calcium compound gasifies catalyticly.
Mixtures of -65 mesh about 50% finely divided car-bonaceous material and about 50% finely divided calcium compound produce sufficient heat in the top of the gasifier to destroy tars which would leave the gasifier with the product gas and require additional processing to separate them.
Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char ls then gasified upon moving down the bed.
3~
Case: ICR 3006 Ninety-five pounds of Eastern U.S. coal is ground -to -100 Tyler mesh. Five pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 Ninety-two pounds of Eastern U.S. coal is ground to ~100 Tyler mesh. Elght pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is extruded into the top of a gasifier where the extrudate is melted, forming an intimate calcium-melted coal suspension which upon coking formed a catalyzed char. This catalyzed char is then gasified upon moving down the bed.
~8~35 Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calclum oxide is ground to -20Q Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a fixed bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
f~33~
Case: ICR 3006 ^ EXAMPLE 5 Ninety~five pounds of Eastern U.S. coal is ground to -100 Tyler mesh. Five pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Eastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a fixed bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 Ninety pounds of Eastern U.S. coal is ground to -65 Tyler mesh. Ten pounds of calcium oxide is ground to -200 Tyler mesh. The finely divided Bastern U.S. coal and finely divided calcium oxide are mixed. This mixture is briquetted and fed into the top of a moving bed gasifier where the briquettes melt, forming catalyzed char. This catalyzed char is then gasified upon moving down the bed.
Case: ICR 3006 The procedure of the invention shows increases of gasification reaction rates 3 to 6 times those of uncatalyzed pior methods.
Having thus described the present invention by reference S to certain of its preferred embodiments, it is respectfully pointed out that the embodiments set forth are illustrative rather than limiting in nature and that many variations and modifications are possible within the scope of the present invention. It is expected that many such variations and modifi-cations will appear obvious and desirable to those skilled in theart based upon a review of the foregoing description of preferred embodiments.
Claims (32)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A catalyzed gasification process comprising providing a mixture of finely divided carbonaceous material particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh, gasifying said carbonaceous material, said gasifying comprising heating said mixture of finely divided carbonaceous material and finely divided calcium compound to form a carbonaceous suspension of calcium compound whereby said calcium compound catalyzes said gasification.
2. The process of claim 1 wherein said calcium compound is selected from the group consisting of calcium oxide, calcium carbonate and calcium hydroxide.
3. The process of claim 1 wherein said heating comprises maintaining said mixture of finely divided carbonaceous material and finely divided calcium compound within the temperature range of 300 to 550°C for from 1 to 30 minutes.
4. The process of claim 3 wherein said heating comprises maintaining said mixture within the range of from 350 to 500°C
for from 4 to 10 minutes.
Case: ICR 3006
for from 4 to 10 minutes.
Case: ICR 3006
5. The process of claim 4 wherein said heating comprises maintaining said mixture within the temperature range of from 400 to 450°C for about 5 minutes.
6. The process of claim 1 wherein said calcium compound particles have a size smaller than 200 mesh.
7. The process of claim 6 wherein said gasifying further comprises contacting said heated mixture with molecular oxygen.
8. The process of claim 7 wherein said gasifying further comprises contacting said heated mixture with air.
9. The process of claim 6 wherein said gasifying further comprises contacting said heated mixture with steam.
Case: ICR 3006
Case: ICR 3006
10. The process of claim 1 further comprising briquetting said mixture to form a briquetted mixture of finely divided carbonaceous material and finely divided calcium compound particles.
11. The process of claim 1 further comprising briquetting said carbonaceous suspension of calcium compound to form a briquetted carbonaceous suspension of calcium compound.
12. The process of claim l further comprising extruding said mixture of finely divided carbonaceous material and finely divided calcium compound into a gasifier.
13. The process of claim 1 further comprising extruding said carbonaceous suspension of calcium compound into a gasifier.
14. The process of claim 1 wherein said carbonaceous material is Eastern coal or coke.
15. The process of claim 1 wherein said mixture is from 3 to 10 weight percent finely divided calcium compound and 90 to 97 weight percent finely divided carbonaceous material.
Case: ICR 3006
Case: ICR 3006
16. The process of claim 1 wherein said mixture comprises from about 10 to about 30 percent by weight calcium compound material.
17. A gasification feed product comprising a carbonaceous suspension of a calcium compound made by heating a mixture of finely divided carbonaceous particles of a size smaller than 65 mesh and finely divided calcium compound particles of a size smaller than 65 mesh.
18. The gasification feed product of claim 17 wherein said finely divided carbonaceous material has a particle size smaller than 100 mesh.
19. The gasification feed product of claim 17 wherein said finely calcium compound particles have a size smaller than about 100 mesh.
20. The product of claim 17 wherein said finely divided calcium compound particles have a size smaller than about 200 mesh.
Case: ICR 3006
Case: ICR 3006
21. The product of claim 17 wherein said finely divided carbonaceous material has a particle size less than about 200 mesh.
22. The product of claim 17 wherein said mixture of finely divided carbonaceous material and finely divided calcium compound are maintained at within the temperature range of 300 to 550°C
for from 1 to 30 minutes.
for from 1 to 30 minutes.
23. The product of claim 22 wherein said mixture is maintained within the temperature range of 350 to 500°C for from 4 to 10 minutes.
24. The product of claim 23 wherein said mixture is main-tained within the temperature range of 400 to 450°C for about 5 minutes.
25. The product of claim 21 wherein said carbonaceous material is Eastern coal or coke.
Case: ICR 3006
Case: ICR 3006
26. The product of claim 21 wherein said mixture is from 3 to 10 weight percent finely divided calcium compound and 90 to 97 weight percent finely divided carbonaceous materials.
27. A gasification feed product comprising 30 percent more weight finely divided carbonaceous material of a size smaller than 65 mesh and 70 percent or less weight finely divided calcium compound of a size smaller than 65 mesh.
28. The product of claim 27 wherein product is 90 to 97 weight percent carbonaceous material and 3 to 10 weight percent calcium compound.
29. The product of claim 28 wherein said carbonaceous materials smaller than 100 mesh and said calcium compound is less than 100 mesh.
30. The product of claim 27 wherein said calcium compound particles have a size smaller than about 325 mesh.
Case: ICR 3006
Case: ICR 3006
31. The product of claim 27 wherein said calcium compound is present in a weight percent of 10 percent or less.
32. The product of claim 27 wherein said calcium compound is present in a weight percent of 10 percent or more.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30565481A | 1981-09-25 | 1981-09-25 | |
| US305,654 | 1981-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1184035A true CA1184035A (en) | 1985-03-19 |
Family
ID=23181741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000411229A Expired CA1184035A (en) | 1981-09-25 | 1982-09-10 | Catalytic coal product and method of gasification |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS58132084A (en) |
| CA (1) | CA1184035A (en) |
-
1982
- 1982-09-10 CA CA000411229A patent/CA1184035A/en not_active Expired
- 1982-09-22 JP JP57165935A patent/JPS58132084A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58132084A (en) | 1983-08-06 |
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