US208656A - Improvement in treating gas-lime to produce caustic lime - Google Patents
Improvement in treating gas-lime to produce caustic lime Download PDFInfo
- Publication number
- US208656A US208656A US208656DA US208656A US 208656 A US208656 A US 208656A US 208656D A US208656D A US 208656DA US 208656 A US208656 A US 208656A
- Authority
- US
- United States
- Prior art keywords
- lime
- improvement
- treating gas
- produce caustic
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004571 lime Substances 0.000 title description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 title description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 9
- 235000011941 Tilia x europaea Nutrition 0.000 description 9
- 239000011449 brick Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
Definitions
- This invention consists in the process of converting the lime that has been used in the purification of illuminatinggas into caustic lime, by first pressing it into forms similar to vbricks, and by the same means that bricks are formed, then placing them in a convenient kiln and subjecting them to increasing heat, sufficient to drive off the moisture, ammonia, carbonic acid, sulphur, and other impurities which the lime has absorbed in purifying the gas.
- the lime maybe used an indefinite number of times, since by burning it reverts to caustic lime, only requiring slacking to convert it into the hydrate, and fitting it for the purifying-boxes again.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
UNITED STATES PATENT QFFIGE.
ASA W. WILKINSON, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND EDWARD S. T. KENNEDY.
IMPROVEMENT IN TREATING GAS-LIME T0 PRODUCE CAUSTIC LIME.
Specification forming part of Letters Patent No. 208,656, dated October 1, 1878; application filed April 17, 1878.
To all whom it may concern:
Be it known that I, ASA W. WILKINSON, of New York city, in the State of New York, have invented a new and useful Improvement in the Process of Treating Gas-Lime; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same.
This invention consists in the process of converting the lime that has been used in the purification of illuminatinggas into caustic lime, by first pressing it into forms similar to vbricks, and by the same means that bricks are formed, then placing them in a convenient kiln and subjecting them to increasing heat, sufficient to drive off the moisture, ammonia, carbonic acid, sulphur, and other impurities which the lime has absorbed in purifying the gas.
The difficulty heretofore experienced in reburning lime of this character has been from the powdery character of the lime, preventing the flames from permeating the mass, which it is necessary for them to do in order to drive off the impurities. By pressing it into bricks this difficulty is overcome.
In carrying out this invention, I make use of an ordinary brick-press. Either a hand or power press will answer. The lime is taken just as it is delivered from the purifying-boxes, and pressed into a convenient form, and sufficientl y hard so as to enable the pressed blocks to be piled one upon another, as is customary in piling clay bricks in the kiln. Fire is now started in the fire-box, and the bricks are burned as clay-bricks are burned. The length well determined when the kiln is burned.
From twenty to thirty-six hours should be sufficient time to accomplish the object.
By this process the lime maybe used an indefinite number of times, since by burning it reverts to caustic lime, only requiring slacking to convert it into the hydrate, and fitting it for the purifying-boxes again. Of course, I do not limit myself solely to the conversion of gas-lime, since my process can be applied in purifying any kind of lime.
What I claim as new, and desire to secure by Letters Patent, is-
The process of converting the spent lime of gas-works into caustic lime, by first pressing it into lumps of any convenient size and shape, and then subjecting them to sufficient heat in a kiln to drive ofi' the moisture, ammonia, carbonic acid, sulphur, and other impurities with which the lime is combined, reducing it to caustic lime, and rendering it fit for further use, substantially as described.
In testimony that I claim the foregoing I have hereunto set my hand and seal this 11th day of April, 1878.
ASA W. XVILKINSON.
WVitnesses:
W. IIAUFF, E. F. KASTENHUBER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US208656A true US208656A (en) | 1878-10-01 |
Family
ID=2278061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US208656D Expired - Lifetime US208656A (en) | Improvement in treating gas-lime to produce caustic lime |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US208656A (en) |
-
0
- US US208656D patent/US208656A/en not_active Expired - Lifetime
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