GB1598178A - Coal gasification system - Google Patents
Coal gasification system Download PDFInfo
- Publication number
- GB1598178A GB1598178A GB24105/78A GB2410578A GB1598178A GB 1598178 A GB1598178 A GB 1598178A GB 24105/78 A GB24105/78 A GB 24105/78A GB 2410578 A GB2410578 A GB 2410578A GB 1598178 A GB1598178 A GB 1598178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- compressor
- fuel
- air
- chamber
- 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
- 239000003245 coal Substances 0.000 title claims description 43
- 238000002309 gasification Methods 0.000 title claims description 35
- 239000007789 gas Substances 0.000 claims description 98
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
- 239000003570 air Substances 0.000 claims description 35
- 239000000446 fuel Substances 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/26—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
- F02C3/28—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension using a separate gas producer for gasifying the fuel before combustion
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/78—High-pressure apparatus
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/80—Other features with arrangements for preheating the blast or the water vapour
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1606—Combustion processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1846—Partial oxidation, i.e. injection of air or oxygen only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
-
- 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
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Description
(54) COAL GASIFICATION SYSTEM
(71) We, FOSTER WHEELER ENERGY
CORPORATION, a corporation organised and existing under the laws of the State of
Delaware, United States of America, of 110
South Orange Avenue, Livingston, New
Jersey, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to gasification of coal to produce a product gas.
In view of the shortages of natural gas and petroleum in recent times there has developed considerable interest in the use of coal as a source of energy. Typically coal is burned in various devices to generate hot gases which are later used to produce electrical energy.
A specific illustration of the use of coal is use in a gas turbine. Coal is gasified with an oxygen containing gas such as air, the resultant gas is purified, and then burned to yield hot gases which power a gas turbine.
The gas turbine can be used to generate electric power, and the turbine exhaust gases can also be used to generate high pressure steam which then would be used to generate electric power.
The temperature of the oxygen introduced to the gasifier is important since higher temperatures yield a more efficient gasifier operation. The oxygen can be preheated by using conventional equipment to about 800 F. without encountering any unusual material problems. However, preheating above 1000'F. would require special equipment.
The present invention provides a system and process for preheating oxygen to temperatures above 1000 F. through the use of conventional components.
In accordance with an illustrative embodiment demonstrating features and advantages of the present invention a coal gasification system is provided for producing a product gas. The system includes a coal gasifier, means for introducing coal feedstock to the gasifier, means for introducing an oxygen containing gas to the gasifier, and means for preheating the oxygen containing gas before introducing it to the gasifier. The preheating means includes a combustion chamber in which a portion of the oxygen combusts with a fuel thereby heating the remaining oxygen.
The above brief description, as well as further objects, features, and advantages of the present invention will be more fully appreciated by reference to the following detailed description of a presently preferred but nonetheless illustrative embodiment in accordance with the present invention, when taken in connection with the accompanying drawing wherein the Figure is a schematic representation of a coal gasification system incorporating the present invention, and showing the preheating means of the invention.
The drawing shows a schematic arrangement of a coal gasification system utilizing the present invention in combination with a gas turbine. It should however be understood that the present invention can be used in a coal gasification system in combination with various other devices which use the product gas produced by a gasification system, for example, steam generators which use the product gas as a fuel for producing heat from combustion.
A coal gasifier 10 receives coal feedstock through line 12 and air through line 14. The gasifier is of a known design and produces a product gas known as low BTU gas. The low
BTU gas contains among other components nitrogen, carbon monoxide and hydrogen.
Gasifier 10 product gas is passed through line 16 to heat recovery and purification station 18. At station 18 the hot product gas may be passed in heat exchange relationship with another fluid for recovery of heat generated during gasification. Also, the product gas is purified at 18 in order to pass on a clean product gas for use as a fuel elsewhere.
Part of the product gas is passed through branch line 22 to compressor 24. The remainder of the product gas is passed through line 26 to gas turbine 28. Gas turbine 28 has a combustion section 30 wherein the product gas is combined with air introduced from compressor section 32 and combusted therein. The hot combustion gas products are passed via 34 to turbine section 36. Thereafter the product gases are exhausted through line 38. It is to be understood that although not shown the exhaust gases could be used elsewhere, such as in a steam generator to produce steam, and need not be exhausted to the ambient air.
That portion of the product gas passed through line 22 is compressed in compressor 24 and then passed to combustion chamber 40 through line 41 as a fuel gas for partial combustion in chamber 40. It is to be understood that the fuel supplied to chamber 40 need not be some of the product gas produced in the gasification system, but could be provided from some other source. It should also be understood that while the fuel is compressed before introduction to chamber 40 in the preferred embodiment, compression of the fuel is not always required.
For example, fuel could be provided directly from another gasifier at a high enough pressure such that compression prior to introduction to chamber 40 would not be required.
Air is also introduced to chamber 40, through line 42. In the preferred embodiment, the air supplied to chamber 40 is taken from the gas turbine compressor section 32 as bleed air. It is however to be understood that air could be provided from another source.
The bleed air taken from compressor section 32 is passed through line 44 to an air boost compressor 46 in order to raise the air to a high enough pressure for use in gasifier 10.
Boost compressor 46, as well as fuel compressor 24 is driven a by motor 48.
Part of the air from line 42 and all of the fuel from line 41 combust in chamber 40, thereby introducing heat to the interior of chamber 40. Some of this heat is absorbed by the remaining air in chamber 40, thereby raising the temperature of the remaining air.
The combustion chamber 40 and downstream equipment can be lined with refractory thereby allowing for temperatures of 1400'F. or more within chamber 40 and downstream equipment. The air supplied from chamber 40 to gasifier 10 can therefore be preheated to temperatures of 1400"F. or higher. Temperature measuring device 50 is provided for determining the temperature of the preheated air.
It is to be understood that while in the preferred embodiment the oxygen containing gas to be used in the gasifier is air taken from a compressor associated with a gas turbine, other oxygen containing gas streams, including pure oxygen, can also be used, as well as other sources of such an oxygen containing gas.
WHAT WE CLAIM IS1 1. A coal gasification system for producing a product gas comprising:
a) a gasifier;
b) means for introducing coal feedstock to said gasifier;
c) means for passing an oxygen containing gas to said gasifier including means for compressing said oxygen containing gas; and
d) means for preheating said oxygen containing gas before passing said oxygen containing gas to said gasifier, said preheating means including a combustion chamber and means for passing a fuel to said combustion chamber, said fuel combusting in said chamber with a portion of said oxygen contained in said gas such that the remainder of said oxygen contained in said gas is raised in temperature before passage to said gasifier.
2. The coal gasification system of claim I wherein said oxygen containing gas comprises air.
3. The coal gasification system of claim 2 wherein said means for compressing said oxygen containing gas comprises a first compressor disposed upstream of said preheating means.
4. The coal gasification system of claim 3 wherein said first compressor is associated with a gas turbine, said gas turbine receiving a portion of said product gas for combustion therein.
5. The coal gasification system of claim 4 further comprising an additional compressor disposed downstream and in a series relationship with said first air compressor for further compression of said oxygen containing gas prior to passage of said oxygen containing gas to said gasifier.
6. The coal gasification system of claim 1 wherein said fuel is a gas, and further comprising means for compressing said gas before passing said gas to said combustion chamber.
7. The coal gasification system of claim 6 wherein said fuel comprises a portion of said product gas produced by said coal gasification system.
8. The coal gasification system of claim 6 wherein said oxygen containing gas comprises air.
9. The coal gasification system of claim 8 wherein said means for compressing said oxygen containing gas comprises a first compressor disposed upstream of said preheating means and an additional compressor disposed upstream of said first compressor, said additional compressor being associated with a gas turbine, said gas turbine receiving said product gas for combustion therein.
10. A coal gasification process comprising the steps of:
a) passing a first stream of oxygen containing gas to a first compressor for compression therein,
b) passing said compressed first stream to
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (16)
1. A coal gasification system for producing a product gas comprising:
a) a gasifier;
b) means for introducing coal feedstock to said gasifier;
c) means for passing an oxygen containing gas to said gasifier including means for compressing said oxygen containing gas; and
d) means for preheating said oxygen containing gas before passing said oxygen containing gas to said gasifier, said preheating means including a combustion chamber and means for passing a fuel to said combustion chamber, said fuel combusting in said chamber with a portion of said oxygen contained in said gas such that the remainder of said oxygen contained in said gas is raised in temperature before passage to said gasifier.
2. The coal gasification system of claim I wherein said oxygen containing gas comprises air.
3. The coal gasification system of claim 2 wherein said means for compressing said oxygen containing gas comprises a first compressor disposed upstream of said preheating means.
4. The coal gasification system of claim 3 wherein said first compressor is associated with a gas turbine, said gas turbine receiving a portion of said product gas for combustion therein.
5. The coal gasification system of claim 4 further comprising an additional compressor disposed downstream and in a series relationship with said first air compressor for further compression of said oxygen containing gas prior to passage of said oxygen containing gas to said gasifier.
6. The coal gasification system of claim 1 wherein said fuel is a gas, and further comprising means for compressing said gas before passing said gas to said combustion chamber.
7. The coal gasification system of claim 6 wherein said fuel comprises a portion of said product gas produced by said coal gasification system.
8. The coal gasification system of claim 6 wherein said oxygen containing gas comprises air.
9. The coal gasification system of claim 8 wherein said means for compressing said oxygen containing gas comprises a first compressor disposed upstream of said preheating means and an additional compressor disposed upstream of said first compressor, said additional compressor being associated with a gas turbine, said gas turbine receiving said product gas for combustion therein.
10. A coal gasification process comprising the steps of:
a) passing a first stream of oxygen containing gas to a first compressor for compression therein,
b) passing said compressed first stream to
a combustion chamber,
c) passing a second stream of fuel to said combustion chamber,
d) combusting said fuel with a portion of said oxygen contained in said first stream in said combustion chamber, thereby raising the temperature of said remaining portion of said oxygen contained in said first stream, and
e) passing said oxygen of a raised temperature to a gasifier,
f) introducing a coal feedstock to said gasifier, and
g) reacting said coal feedstock with said oxygen in said gasifier to produce a product gas.
11. The process of claim 10 wherein said second stream of fuel gas comprises a portion of said product gas.
12. The process of claim 10 further comprising the step of compressing said second stream of fuel before passing said stream to said combustion chamber.
13. The process of claim 12 further comprising the step of passing said first stream of compressed oxygen containing gas from said first compressor to a second compressor for further compression therein before passing said oxygen containing stream to said combustion chamber.
14. The process of claim 13 further comprising the step of passing said product gas to a purifier for purification of said product gas.
15. A coal gasification system as claimed in claim 1 and substantially as herein described with reference to the accompanying drawing.
16. A coal gasification process as claimed in claim 10 and substantially as herein described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81475077A | 1977-07-11 | 1977-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1598178A true GB1598178A (en) | 1981-09-16 |
Family
ID=25215917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24105/78A Expired GB1598178A (en) | 1977-07-11 | 1978-05-30 | Coal gasification system |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS6032671B2 (en) |
| CA (1) | CA1108857A (en) |
| ES (1) | ES470592A1 (en) |
| FR (1) | FR2397451A1 (en) |
| GB (1) | GB1598178A (en) |
| IT (1) | IT1095180B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59154868U (en) * | 1983-04-01 | 1984-10-17 | 三菱重工業株式会社 | Swash plate type axial piston pump |
| CN106753588B (en) * | 2017-02-20 | 2018-11-23 | 中聚信海洋工程装备有限公司 | A kind of gasifying agent mixing pre-burning firing technique and device |
-
1978
- 1978-05-23 CA CA303,856A patent/CA1108857A/en not_active Expired
- 1978-05-30 GB GB24105/78A patent/GB1598178A/en not_active Expired
- 1978-05-31 IT IT24090/78A patent/IT1095180B/en active
- 1978-06-07 ES ES470592A patent/ES470592A1/en not_active Expired
- 1978-06-07 JP JP53067868A patent/JPS6032671B2/en not_active Expired
- 1978-07-07 FR FR7820304A patent/FR2397451A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6032671B2 (en) | 1985-07-29 |
| IT7824090A0 (en) | 1978-05-31 |
| ES470592A1 (en) | 1979-09-01 |
| JPS5417901A (en) | 1979-02-09 |
| FR2397451A1 (en) | 1979-02-09 |
| IT1095180B (en) | 1985-08-10 |
| CA1108857A (en) | 1981-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |