WO1990015296A1 - Calcium carbide production furnace by oxy-thermal process - Google Patents
Calcium carbide production furnace by oxy-thermal process Download PDFInfo
- Publication number
- WO1990015296A1 WO1990015296A1 PCT/KP1990/000001 KP9000001W WO9015296A1 WO 1990015296 A1 WO1990015296 A1 WO 1990015296A1 KP 9000001 W KP9000001 W KP 9000001W WO 9015296 A1 WO9015296 A1 WO 9015296A1
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- WO
- WIPO (PCT)
- Prior art keywords
- furnace
- equipment according
- calcium carbide
- oxygen
- lid
- Prior art date
Links
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 23
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 title description 20
- 239000000463 material Substances 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 18
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 7
- 239000004571 lime Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 20
- 239000012535 impurity Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
- 235000012255 calcium oxide Nutrition 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000003077 lignite Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/942—Calcium carbide
Definitions
- the invention relates to a low ellipse sh ⁇ ft kiln for Droducing calcium carbide and high purity synthesizing gas simultaneously by using high temperature attained during the burning of carbon stock by oxygen after charging into the furnace of lime material, in particular of low strength with relatively large amount of impurities.
- Patent DE 929546 Jun.27, 1955 (Stamicarbon N.V.) discloses the method of protecting the furance wall from damages by protruding the nozzle into the inside of
- This invention is aimed at the reduction of energy consumption, especially electro-energy consumption in the production of calcium carbide and synthesizing gas and the realization of industrial production by solving the furnace structure able to use raw material of relatively low quality.
- the structure and working orinciple of the carbide furnace by oxy-thermal process will be described, referring to the following drawings:
- the production of calcium carbide by oxy-thermal process is of significance in reducing the overall energy consumption, especially electro-energy consumption in the production of calcium carbide and synthesizing gases.
- quick lime is used as raw material of lime and pure oxygen is employed without any gases mixed.
- equation 4 represents a side reaction
- the feeding pipe of raw materials (Fig 4-4) and flue (Fig 4-3) are arranged slantwise in the furnace wall near the top of the raw material layer so that the powder might' be less formed due to the falling of materials and the powder formed go out easily through the flue.
- the nozzles were arranged in a rectangular (Fig 4-1) or elliptic form, and the section of furnace also was made elliptic (Fig 4-1).
- the height of material charges is shorter than the diameter of furnace, because the layer of heat exchange is allowed to be low on the condition of using the oxygen heat. Therefore, only when the raw materials are charged uniformly through the whole section of furnace, can the ununiformity of air permeability in the material layer due to the deviation of the height of material layer be prevented.
- two or more material feeding pipes are arranged.
- the apparatus in order to protect the apparatus from damage due to tne temperature rising in the upper space of furnace, the apparatus is arranged so as not to be exposed in the top space of furnace, and the inside of flue and lid of furnace are lined with refractories, upper part of the lid being cooled with water (Fig 4-2 and 4-3).
- the lid is not fixed to the furnace body, out connected to it with water seal (Fig 4-2), and no
- the furnace gas after passing the flue, enters
- the dust collector where the dust is reduied to under 2mg/Nm 3 , and then transferred to synthesis process.
- the production of calcium carbide by oxy-thermal process was realized in a industrial scale, for example, by treating at 2000'C and using 98% oxygen, lump quick lime having 85% of total CaO content and 60kg/cm 2 of crusning strength, and lump carbon stock having 15% of ash content and
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Calcium carbide production furnace, in which low quality lime material and carbon stock of low strength are charged homogeneously and continuously or intermittently, oxygen is blasted through water-cooled copper nozzle arranged symmetrically in both sides of the waist of furnace wall, calcium carbide accumulated on the bottom of furnace is discharged through the tap hole, synthesizing gas through the flue in the top of the furnace.
Description
Calcium Carbide Production Furnace by Oxy-thermal
Process
The invention relates to a low ellipse shβft kiln for Droducing calcium carbide and high purity synthesizing gas simultaneously by using high temperature attained during the burning of carbon stock by oxygen after charging into the furnace of lime material, in particular of low strength with relatively large amount of impurities.
Calcium carbide production by oxy-thermal process has been introduced in a number of patent documents:
BASF's patents of 1950's years disclose the process in which quality coke and quick lime are used as raw materials and pure oxygen is injected, NL 76537 (Nov.15, 1954) (Stamicarbon N.V.) and NL 83099 (Oct.15, 1956) (Stamicarbon N.V.) disclose the process in which industrial oxygen is used, mixed
with steam and CO2, DE 2925897(Jan. 22,1981) (Rheinische
Sraunkohelenwerke AG) discloses the process in which coke made from brown coal is used, DE 3035026(Apr.22, 1982)
(Rheinische Braunkolenwerke AG) discloses the process in which brown coal and Ca(OH)2 or CaCO3 are used after mixing and calcinating in a powder state, and EP 0068303(Jan.5,1983) (Rheinische 3raunkohelenwerke AG) discloses the process
in which calcium carbide is produced by pulverizing the
fuel-coal, brown coal, peat and lime material i.e. Ca(OH)2 and CaCO3, followed by injecting into the furnace directly with oxygen.
A number of patents disclose various charging apparatuses
which facilitate the creation of calcium carbide
formation zone in the center part of the furnace, combustion zone in the periphery of the furnace, and nozzles arranged in a radial or tangential direction to the formation
zone.
Furthermore, in these patents, in order to raise the quality of calcium carbide the high temperature
reduction and volatilization method is employed.
Patent DE 929546 (Jun.27, 1955) (Stamicarbon N.V.) discloses the method of protecting the furance wall from damages by protruding the nozzle into the inside of
furnace wall to form a false wall. Patent GB 786004
(Nov.6, 1953) (BASF) discloses that the accumulation of dust on the raw material layer was prevented by ensuring over 8cm/sec of linear velocity of exhaust gas in the free section of furnace when the quality of calcium carbide was 50%, or more than 12.5cm/s (0'0, 750mm mercury column) when it was over 83%.
As seen from above data, despite the long history of testing for producing the calcium carbide by oxy-thermal process, it has not been produced in an industrial sacle.
This invention is aimed at the reduction of energy consumption, especially electro-energy consumption in the production of calcium carbide and synthesizing gas and the realization of industrial production by solving the furnace structure able to use raw material of relatively low quality.
The structure and working orinciple of the carbide furnace by oxy-thermal process will be described, referring to the following drawings:
Fig 4-1. Section of carbide furnace by
oxy-thermal process
Fig 4-2. Section of lid of the furnace
Fig 4-3. Section of installed flue
Fig 4-4. Section of material feeding apparatus
The production of calcium carbide by oxy-thermal process is of significance in reducing the overall energy consumption, especially electro-energy consumption in the production of calcium carbide and synthesizing gases.
Since the reaction of formation of calcium carbide takes place, industrially at high temperature range, say 1800-2000'C and high temperature gas goes out from reaction zone, it is reasonable to use shaft furnace and realize heat exchange in it to use for preheating the raw materials. Where lime stone or slaked lime is used directly as a raw material of lime, additional reaction heat is consumed for their calcination in the furnace. However, in the oxy-thermal process furnace which uses only incomplete combustion heat of fuel, comsumotion of oxygen and fuel greatly increases and the amount of gas produced as well.
Furthermore, if steam, carbon dioxide, or natural gas and the other gases are mixed with oxygen, it also causes an additional consumption of reaction heat for their gasification, thus increasing the consumption of oxygen, fuel and the amount of gas production as well.
If the oxygen, fuel consumption and gas production amount per unit calcium carbide output increases, and the gas ascends with more heat than needed for preheating the raw material, then the temperatures of preheating zone and of furnace gases increase, thus giving more heat loss by furnace gases. Therefore, on the condition of using shaft kiln, it is reasonable to reduce the other additional reaction heat consumption than those needed for production reaction of calcium carbide.
So, in this invention, quick lime is used as raw material of lime and pure oxygen is employed without any gases mixed.
Meanwhile, if the more impurities of metal oxides are included in carbon stock, additional heat consumption takes place in the furnace by following endothermic reaction, thus reducing the temperature of reaction zone.
SiO2 + C → Si o + CO 1 )
Al2O3 + 2C → Al2 O + 2CO 2 )
MgO + C → Mg + C O 3 )
( CaO + C → Ga + CO 4 ) )
Fe2O3 + 3C →2Fe + 3CO 5 )
SiO2 + 2C → Si + 2 C O 6 )
Where, equation 4) represents a side reaction
accompanied by the carbide formation reaction. While gaseous SiO, Al2O, Mg, Ca produced by reaction 1), 2), 3) and 4) are cooled along with CO in preheating zone, heat is generated by the reverse reactions to those of 1), 2), 3) and 4 ) to return to metal oxides, thus causing loss of carbon and temperature rising of that area.
Therefore, it is better to use raw material of little impurities. But, from the economic asoects, in tnis
invention, it was made to use the raw material having impurities of some extent.
Meanwhile, where the lump raw materials have low strength, powders are formed due to the strike and friction in the course ofmaterial movement, and due to the whirling of lump material caused by kinetic energy of injected oxygen in front of the nozzle .
Such powders accumulated in the furnace decrease the air permeability in tαe furnace and deteriorate the process of furnace.
Therefore, through the solid raw material is
preferred, in this invention it was made possible to use even the raw material with relatively low strength, that is, considering the low strength of raw materials, the feeding pipe of raw materials (Fig 4-4) and flue (Fig 4-3) are arranged slantwise in the furnace wall near the top of the raw material layer so that the powder might' be less formed due to the falling of materials and the powder formed go out easily through the flue.
Moreover, the linear velocity of oxygen was made slow to prevent the whirl in front of the nozzles.
Considering the decrease of the depth of oxygen penetration due to the reduction of the linear velocity of oxygen, and for the purpose of preventing the overlapping of reaction zone or the formation of immovable zone of raw materials in the center of furnace, the nozzles were arranged in a rectangular (Fig 4-1) or elliptic form, and the section of furnace also was made elliptic (Fig 4-1).
The height of material charges is shorter than the diameter of furnace, because the layer of heat exchange is allowed to be low on the condition of using the oxygen heat. Therefore, only when the raw materials are charged uniformly through the whole section of furnace, can the ununiformity of air permeability in the material layer due to the deviation of the height of material layer
be prevented. To this effect, in this invention, two or more material feeding pipes are arranged.
In the calcium carbide furnace using oxygen heat, compared with electric furnace, there are less input in the heat balance of portion of crucible where molten calcium carbide collects.
Therefore, in the portion of crucible, there occurs a cooling due to the heat loss, and a rising of viscosity or coagulation of melt, which causes a obstacle to its flowing out.
To prevent this, in this invention special attention is drawn to heat insulation of crucible portion, and in the high temperature zone, the first consideration is given to heat insulation.
In the calcium carbide furnace using oxy-thermal process, the temperature in the heat exchange layer,
i.e. material layer, is low, while the temoerature in the reaction zone is high, therefore, the temperature in the upper space of the furnace rises significantly, even when the air permeability in the section of furnace is ununiform or the material layer is a little lower than the height set
In this invention, in order to protect the apparatus from damage due to tne temperature rising in the upper space of furnace, the apparatus is arranged so as not to be exposed in the top space of furnace, and the inside of flue
and lid of furnace are lined with refractories, upper part of the lid being cooled with water (Fig 4-2 and 4-3).
In order to facilitate the observation of inside of furnace and its maintenance, and to enable the lid to be lifted in case a serious explosion occurs in the furnace, in this invention the lid is not fixed to the furnace body, out connected to it with water seal (Fig 4-2), and no
apparatus and structure are put in the upper part of the lid.
In order to increase the service life of oxygen
blast nozzles, pure copper was employed in the part of
nozzle which is exposed inside the furnace, and to eliminate the welding portion, the portion is pressed into a monoblock structure.
The furnace gas, after passing the flue, enters
the dust collector, where the dust is reduied to under 2mg/Nm3, and then transferred to synthesis process.
With this structure of furnace according to the
invention, the production of calcium carbide by oxy-thermal process was realized in a industrial scale, for example, by treating at 2000'C and using 98% oxygen, lump quick lime having 85% of total CaO content and 60kg/cm2 of crusning strength, and lump carbon stock having 15% of ash content and
20kg/cm2 of crushing strength, it was possible to produce a carbide with purity of 65-70% and synthesizing gas containing
96% CO+H2.
Brief description of the figures
Fig. 4-1 Section of carbide furnace by oxy-thermal process
1 furnace lid
2 furnace wall
3 hole of flue pipe
4 hole of nozzle
5 tap hole
6 furnace bottom
7 heat insulator
8 light weight refractory
9 heat insulator
10 oxygen nozzle
11 hole of supplier
Fig. 4-2 Section of lid of tne furnace
12 lid cooler
13 lining
14 level measuring hole
15 safety tap
Fig. 4-3 Section of installed flue
Fig. 4-4 Section of material feeding apparatus
16 automatic weigher
17 rotary supplier
18 sand seal
19 raw material bin
Claims
1. Furnace for producing calcium carbide and high purity gas for synthesizing, characterized in that lump lime material with relatively high content of impurity is mixed with lump carbon stock of low strength, which is
charged uniformly into the upper part of short elliotic shaft furnace by rotary supplier, oxygen is blasted into the furnace through several nozzles, arranged in the waist of furnace, the resulting furnace gas goes out through the flue arranged slantwise in the upper part of the furnace wall, the calcium carbide accumulated in the heat insulated
furnace bottom being discharged periodically through the tap hole.
2. The equipment according to the claim 1, characterized in that it is possible to use cheap lump lime material
with relatively high impurities and lump caroon stock of low strength.
3. The equipment according to the claim 1,
characterized in that it represents a short shaft furnace having elliptic section with lid on it.
4- The equipment according to the claim 1 and 3, characterized in that the raw materials are charged
continuously or intermidently into the furnace by the weigher and gas-tight rotary supplier connected under the raw material bin.
5. The equipment according to the claims 1,3 and 4, characterized in that in order to uniformly distribute the materials in the furnace section a pair of weigher and two or more rotary suppliers are provided.
6. The equipment according to the claims 1 and 3, characterized in that to the furnace body is connected, with water seal, a lid, to which are attached, a material level measuring hola, explosion-safety tap, etc., the lid is cooled by water, the inside of which being lined with refractories.
1. The equipment according to the claims 1,3 and 6, characterized in that several material level measuring holes, explosion-safety taps, etc., can be provided, if necessary.
8. The equioment according to the claims 1 and 3, characterized in that the flue lined with refractories is inclined at 45º and more degrees of angle towards trie upper part of the furnace and can be composed of one or two pieces.
9. The equipment according to the claims 1,3,4 and 5, characterized in that the material feeding pipe is inclined at 45º and more degrees of angle and can be comoosed of two or more pieces.
10. The equipment according to the claims 1 and 3, characterized in that the oxygen nozzles are arranged
symmetrically in the both sides of the waist of the
furnace wall and have rectangular or elliptic ends
protruding into the furnace.
11. The equipment according to the claims 1 and 3, characterized in that the heat insulation of the furnace bottom is ensured sufficiently, and the first consideration is given to the heat insulation of tne high temperature zone.
12. The equipment according to the claims 1 and 10, characterized in tnat the material of nozzle portion protruding into the furnace is made of pure cooper, which oeing put together in a monoolock structure by pressing without welding seams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE904090997T DE4090997T1 (en) | 1989-06-10 | 1990-04-20 | OVEN FOR CALCIUM CARBIDE PRODUCTION BY THE OXYGEN HEATING PROCESS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KP22589 | 1989-06-10 | ||
| KP89-225 | 1989-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1990015296A1 true WO1990015296A1 (en) | 1990-12-13 |
Family
ID=19198151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KP1990/000001 WO1990015296A1 (en) | 1989-06-10 | 1990-04-20 | Calcium carbide production furnace by oxy-thermal process |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE4090997T1 (en) |
| WO (1) | WO1990015296A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1148311A2 (en) * | 2000-04-11 | 2001-10-24 | Maerz Ofenbau AG | Process for firing a material containing carbonates |
| CN100372820C (en) * | 2006-08-11 | 2008-03-05 | 黄鸿宁 | Process of co-producing acetylene and synthetic gas with petroleum coke and low ash coal |
| CN109269300A (en) * | 2018-07-16 | 2019-01-25 | 安徽华塑股份有限公司 | A kind of low pollution high quality semi-coke furnace of calcium carbide |
| CN111874908A (en) * | 2020-07-29 | 2020-11-03 | 山西诺凯化工技术有限公司 | Pressurized moving bed oxygen-thermal method calcium carbide gas integrated production equipment |
| CN116553554A (en) * | 2023-04-21 | 2023-08-08 | 昆明云锗高新技术有限公司 | Silicon carbide powder synthesis method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU52063A1 (en) * | 1932-03-31 | 1936-11-30 | Л.С. Драго | The head of the open-hearth furnace |
| SU68329A1 (en) * | 1940-09-17 | 1946-11-30 | А.В. Кочинашвили | Closed resistance furnace for the production of calcium carbide and ferroalloys |
| SU116984A1 (en) * | 1948-12-03 | 1957-11-30 | Г.П. Иванцов | Artificial cooling metal lance for injecting oxygen into the molten metal bath |
| SU130052A1 (en) * | 1960-02-12 | 1960-11-30 | В.П. Ененко | Loading device for closed cupola |
| GB1318637A (en) * | 1969-06-28 | 1973-05-31 | Penzen Kompressorny Z | Gas cupola furnace |
| GB1378165A (en) * | 1970-12-04 | 1974-12-27 | Wieczorek J | Blast furnaces |
| DE2424956B2 (en) * | 1974-05-22 | 1977-03-24 | Penzenskij Kompressornyj Zavod, Penza (Sowjetunion) | GAS FIRED COUPLER |
| SU606069A1 (en) * | 1974-12-02 | 1978-05-05 | Предприятие П/Я А-1170 | Gas cupola |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE929546C (en) * | 1951-08-25 | 1955-06-27 | Stamicarbon | Process for the simultaneous production of carbides and valuable gas |
| DE2608365C3 (en) * | 1976-03-01 | 1978-11-16 | S.A. Des Anciens Etablissements Emile Dupret, Luxemburg | Water-cooled, welded double-chamber blow mold for shaft furnaces, especially blast furnaces |
| DE7835461U1 (en) * | 1976-11-30 | 1979-04-26 | Elkem-Spigerverket A/S, Oslo | SEALING DEVICE FOR FEED INTO CLOSED ELECTRIC MELTING FURNACES |
| AU6486494A (en) * | 1993-06-24 | 1995-01-05 | Siemens Aktiengesellschaft | Compound and method of applying anti-fouling coatings on medical devices |
-
1990
- 1990-04-20 DE DE904090997T patent/DE4090997T1/en not_active Withdrawn
- 1990-04-20 WO PCT/KP1990/000001 patent/WO1990015296A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU52063A1 (en) * | 1932-03-31 | 1936-11-30 | Л.С. Драго | The head of the open-hearth furnace |
| SU68329A1 (en) * | 1940-09-17 | 1946-11-30 | А.В. Кочинашвили | Closed resistance furnace for the production of calcium carbide and ferroalloys |
| SU116984A1 (en) * | 1948-12-03 | 1957-11-30 | Г.П. Иванцов | Artificial cooling metal lance for injecting oxygen into the molten metal bath |
| SU130052A1 (en) * | 1960-02-12 | 1960-11-30 | В.П. Ененко | Loading device for closed cupola |
| GB1318637A (en) * | 1969-06-28 | 1973-05-31 | Penzen Kompressorny Z | Gas cupola furnace |
| GB1378165A (en) * | 1970-12-04 | 1974-12-27 | Wieczorek J | Blast furnaces |
| DE2424956B2 (en) * | 1974-05-22 | 1977-03-24 | Penzenskij Kompressornyj Zavod, Penza (Sowjetunion) | GAS FIRED COUPLER |
| SU606069A1 (en) * | 1974-12-02 | 1978-05-05 | Предприятие П/Я А-1170 | Gas cupola |
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| EP1148311A2 (en) * | 2000-04-11 | 2001-10-24 | Maerz Ofenbau AG | Process for firing a material containing carbonates |
| EP1148311A3 (en) * | 2000-04-11 | 2003-12-03 | Maerz Ofenbau AG | Process for firing a material containing carbonates |
| CN100414234C (en) * | 2000-04-11 | 2008-08-27 | 梅尔兹-奥芬布股份公司 | Method for incineration of material contg. carbon |
| CN100372820C (en) * | 2006-08-11 | 2008-03-05 | 黄鸿宁 | Process of co-producing acetylene and synthetic gas with petroleum coke and low ash coal |
| CN109269300A (en) * | 2018-07-16 | 2019-01-25 | 安徽华塑股份有限公司 | A kind of low pollution high quality semi-coke furnace of calcium carbide |
| CN111874908A (en) * | 2020-07-29 | 2020-11-03 | 山西诺凯化工技术有限公司 | Pressurized moving bed oxygen-thermal method calcium carbide gas integrated production equipment |
| CN116553554A (en) * | 2023-04-21 | 2023-08-08 | 昆明云锗高新技术有限公司 | Silicon carbide powder synthesis method |
| CN116553554B (en) * | 2023-04-21 | 2024-05-14 | 昆明云锗高新技术有限公司 | Silicon carbide powder synthesis method |
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| DE4090997T1 (en) | 1991-08-29 |
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