GB1238346A - - Google Patents
Info
- Publication number
- GB1238346A GB1238346A GB1238346DA GB1238346A GB 1238346 A GB1238346 A GB 1238346A GB 1238346D A GB1238346D A GB 1238346DA GB 1238346 A GB1238346 A GB 1238346A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- feedstock
- black
- reaction mass
- combustion gases
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/50—Furnace black ; Preparation thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
1,238,346. Carbon black. ASHLAND OIL Inc. 12 July, 1968, No. 33280/68. Heading C1A. [Also in Division H1] Carbon black may be prepared by contacting a hydrocarbon feedstock with hot combustion gases in a first combustion zone, into which feedstock is injected and turbulently mixed, introducing them into a second zone through a restriction of lesser cross-section than either zone, injecting Ca, Sr, Mg or mixtures of these into the reaction mass in the second zone, cooling the reaction mass at a distance downstream sufficient to provide a contact time between the alkaline earth metal and the black sufficient to increase the surface area of the black, and recovering the product. Alternatively, the feedstock is injected into the first zone as a conical spray having an average included spray angle of 60-180 degrees, the rate of introduction of feedstock and combustion gases being adjusted so that 20-70% of the feedstock is burnt, and the rest converted to carbon black at a temperature of 3000-3400‹ F., and the reaction mass contacted with alkaline earth metal (including Ba) for 10-70 milliseconds, cooling to below 3000‹ F., and recovering the black. The combustion gases are preferably provided in the first zone by igniting a mixture of fuel and air at the upstream end of the first zone as a radially outwardly directed disc-shaped stream which is initially out of contact with the feedstock. The metal may be introduced as a compound, and, if a mixture of metals including barium is used, variation of the weight ratio of Ba to total metal varies the "structure" (as measured by oil adsorption) of the product independently of the surface area. Blacks having surface areas (iodine absorption) of 600-1300 m<SP>2</SP>/g. ; structure levels (oil factor) of 250-450 ml./100 g. C; pH of 6-10 and ash contents 0À5-10% may be produced by these methods.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3328068 | 1968-07-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1238346A true GB1238346A (en) | 1971-07-07 |
Family
ID=10350881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1238346D Expired GB1238346A (en) | 1968-07-12 | 1968-07-12 |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1238346A (en) |
MY (1) | MY7300123A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4752456A (en) * | 1982-06-01 | 1988-06-21 | Mitsui Toatsu Chemicals, Inc. | Process for preparing metal carbides and precursors thereof |
-
1968
- 1968-07-12 GB GB1238346D patent/GB1238346A/en not_active Expired
-
1973
- 1973-12-30 MY MY123/73A patent/MY7300123A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4752456A (en) * | 1982-06-01 | 1988-06-21 | Mitsui Toatsu Chemicals, Inc. | Process for preparing metal carbides and precursors thereof |
Also Published As
Publication number | Publication date |
---|---|
MY7300123A (en) | 1973-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |