CN102676232A - Method for preparing pulverized coal into hydrogen gas - Google Patents
Method for preparing pulverized coal into hydrogen gas Download PDFInfo
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- CN102676232A CN102676232A CN2012101544206A CN201210154420A CN102676232A CN 102676232 A CN102676232 A CN 102676232A CN 2012101544206 A CN2012101544206 A CN 2012101544206A CN 201210154420 A CN201210154420 A CN 201210154420A CN 102676232 A CN102676232 A CN 102676232A
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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
The invention relates to a method for preparing pulverized coal into hydrogen gas, which belongs to the field of the chemical industry of coal. The method for preparing the pulverized coal into the hydrogen gas is characterized by comprising the following steps of: burning pulverized coal by a fluidized bed and gasifying: pulverizing coal into particles, adding quicklime, generating the operations of burning and gasifying the pulverized coal by mixed gas comprising water vapor and air, burning at the lower section of the fluidized bed and forming a gasifying area at the upper part of a burning area; and catalyzing the water vapor, reforming and manufacturing hydrogen: further generating the reactions of catalyzing and reforming the water vapor for generated coarse coal gas, an ash isolation net and a catalyst bed layer by the support of a catalyst and discharging a final gas product which is rich in hydrogen gas from a gas outlet. According to the method disclosed by the invention, the added quicklime not only acts as the actions of catalyzing and gasifying but also has a better control action to the discharge of pollutants; and according to the method disclosed by the invention, a commercial water vapor reforming catalyst is adopted so as to obtain hydrogen gas with higher yield. The coupling of the reactions of burning by the fluidized bed, gasifying, oxidizing partially, catalyzing the water vapor, reforming, manufacturing the hydrogen and the like is realized in one reactor.
Description
Technical field
The present invention relates to a kind of fine coal is prepared as the method for hydrogen, belong to coal chemical technology.
Background technology
China has become most important in the world and has been maximum combustion gasification and hydrogen manufacturing markets such as coal at present.Up to now; Pouring in of external gasification product; Though technical support is provided for the fast development of domestic Coal Chemical Industry industry, because we fail to grasp the core technology that coal gasifier is made, has paid many unnecessary costs simultaneously for this reason; Also cause the market of Chinese billions of units to be earned by the foreign trader; We have to again to the patent rules permitted expense of foreign-made corporate payments great number, task equipment and site technology service fee, and so the developing country and the enterprise of a fast development also are difficult to bear the general expensive of coal gasification apparatus of China's introduction at present for China for these; How efficiently, rationally the quantity of China's Energy production and consumption is all very big, practice thrift and utilize the energy to become an important social concern.Aspect combustion gasification and catalyzing manufacturing of hydrogen, all exist the direct utilization ratio of raw material not high with the problem that produces secondary pollutant.With cheap fine coal is that raw material is produced hydrogen, and cost is low, has environmental effect and society and economic benefit preferably.
Summary of the invention
According to the deficiency of prior art, the technical problem that the present invention will solve is: provide a kind of fine coal is prepared as the method for hydrogen, technology is simple, cost is low, reduces the issuable secondary pollutant of coal hydrogen manufacturing.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of fine coal is prepared as the method for hydrogen, it is characterized in that may further comprise the steps:
The gasification of a, pulverized coal fluidized bed combustion: with coal dust broken be particle; Add unslaked lime,, make coal dust that burning and gasification take place with the mixed gas that water vapour and air are formed; Burn at the fluidized-bed hypomere; Temperature of combustion is controlled at 900～1100 ℃, forms the gasification zone on top, combustion zone, and the control gasification temperature is 700～750 ℃ in fluidized-bed;
The raw gas that b, water vapour catforming hydrogen production: step a gasification generates supports through catalyzer and at a distance from grey net and beds, the water vapour catforming reaction takes place further, discharges the final gas products that is rich in hydrogen from pneumatic outlet.
The diameter of described pulverized coal particle is 5～10mm.
It is 2～5% that described unslaked lime accounts for the fine coal quality.
Described mixed gas is that 80～90% water vapour and volume(tric)fraction are that 10～20% air is formed with volume(tric)fraction.
The invention has the beneficial effects as follows: adopt water vapour and air gas mixture combustion gasification fine coal under hot conditions, speed of reaction is fast, has also effectively prevented coking; The inventive method is added unslaked lime, not only plays the catalytic gasification effect, and pollutant emission is also had control action kou preferably; The inventive method adopts commercial steam reforming catalyzer in the water vapour catforming hydrogen production stage, and the be converted thick gas in autopneumatolysis stage of orientation is to obtain higher yields hydrogen.The inventive method has realized the coupling of reactions such as fluidized-bed combustion, gasification, partially oxidation and water vapour catforming hydrogen production in a reactor drum.
Embodiment
Below in conjunction with embodiment the present invention is done and to further describe:
Embodiment 1
It is 10mm that coal powder is broken to average particulate diameter, adds then that to account for the fine coal massfraction be 5% unslaked lime, is that 80% water vapour and 20% air gas mixture are vaporized chemical with volume(tric)fraction; In the 3 little the reaction times, make coal dust that burning and gasification take place, the fluidized-bed hypomere burns; Temperature of combustion is controlled at 1000～1100 ℃; Form gasification on top, combustion zone regional, and in fluidized-bed, controlling gasification temperature is 700～750 ℃, and the raw gas that gasification generates is through the catalyzer support on device top and at a distance from grey net and beds; The water vapour catforming reaction further takes place, and discharges the final gas products that is rich in hydrogen from pneumatic outlet.Adopt portable GreenLine 9000 type gas analyzers to analyze hydrogen content, the mean volume fraction that records hydrogen in the outlet of installing is 43%.
Embodiment 2
It is 5mm that coal powder is broken to average particulate diameter, adds then that to account for the fine coal massfraction be 2% unslaked lime, is that 90% water vapour and 10% air gas mixture are vaporized chemical with volume(tric)fraction; In the 3 little the reaction times, make coal dust that burning and gasification take place, the fluidized-bed hypomere burns; Temperature of combustion is controlled at 900～1000 ℃; Form gasification on top, combustion zone regional, and in fluidized-bed, controlling gasification temperature is 700～750 ℃, and the raw gas that gasification generates is through the catalyzer support on device top and at a distance from grey net and beds; The water vapour catforming reaction further takes place, and discharges the final gas products that is rich in hydrogen from pneumatic outlet.Adopt portable GreenLine 9000 type gas analyzers to analyze hydrogen content, the mean volume fraction that records hydrogen in the outlet of installing is 40%.
Embodiment 3
It is 7mm that coal powder is broken to average particulate diameter, and the fine coal massfraction is 4% unslaked lime then, is that 85% water vapour and 15% air gas mixture are vaporized chemical with volume(tric)fraction; In the 3 little the reaction times, make coal dust that burning and gasification take place, the fluidized-bed hypomere burns; Temperature of combustion is controlled at 900～1100 ℃; Form gasification on top, combustion zone regional, and in fluidized-bed, controlling gasification temperature is 700～750 ℃, and the raw gas that gasification generates is through the catalyzer support on device top and at a distance from grey net and beds; The water vapour catforming reaction further takes place, and discharges the final gas products that is rich in hydrogen from pneumatic outlet.Adopt portable GreenLine 9000 type gas analyzers to analyze hydrogen content, the mean volume fraction that records hydrogen in the outlet of installing is 39%.
Claims (4)
1. one kind is prepared as the method for hydrogen with fine coal, it is characterized in that may further comprise the steps:
The gasification of a, pulverized coal fluidized bed combustion: with coal dust broken be particle; Add unslaked lime,, make coal dust that burning and gasification take place with the mixed gas that water vapour and air are formed; Burn at the fluidized-bed hypomere; Temperature of combustion is controlled at 900～1100 ℃, forms the gasification zone on top, combustion zone, and the control gasification temperature is 700～750 ℃ in fluidized-bed;
The raw gas that b, water vapour catforming hydrogen production: step a gasification generates supports through catalyzer and at a distance from grey net and beds, the water vapour catforming reaction takes place further, discharges the final gas products that is rich in hydrogen from pneumatic outlet.
2. according to claim 1 fine coal is prepared as the method for hydrogen, the diameter that it is characterized in that described pulverized coal particle is 5～10mm.
3. according to claim 1 fine coal is prepared as the method for hydrogen, it is characterized in that it is 2～5% that described unslaked lime accounts for the fine coal quality.
4. according to claim 1 fine coal is prepared as the method for hydrogen, it is characterized in that described mixed gas is that 80～90% water vapour and volume(tric)fraction are that 10～20% air is formed with volume(tric)fraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101544206A CN102676232A (en) | 2012-05-17 | 2012-05-17 | Method for preparing pulverized coal into hydrogen gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101544206A CN102676232A (en) | 2012-05-17 | 2012-05-17 | Method for preparing pulverized coal into hydrogen gas |
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| CN102676232A true CN102676232A (en) | 2012-09-19 |
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| CN2012101544206A Pending CN102676232A (en) | 2012-05-17 | 2012-05-17 | Method for preparing pulverized coal into hydrogen gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193202A (en) * | 2013-04-18 | 2013-07-10 | 南京理工大学 | Biomass chained circulating hydrogen production device and process |
| CN106673939A (en) * | 2016-12-13 | 2017-05-17 | 神雾环保技术股份有限公司 | System and method for preparing ethylene by coupling |
| CN108350370A (en) * | 2015-11-17 | 2018-07-31 | 杰富意钢铁株式会社 | The manufacturing method of the gasification process of carbonaceous fuel, the operating method of iron-smelter and gasifying gas |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139083A (en) * | 2007-08-23 | 2008-03-12 | 上海电力学院 | Devices for catalyzing manufacturing of hydrogen by using waste plastics and methods thereof |
-
2012
- 2012-05-17 CN CN2012101544206A patent/CN102676232A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139083A (en) * | 2007-08-23 | 2008-03-12 | 上海电力学院 | Devices for catalyzing manufacturing of hydrogen by using waste plastics and methods thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193202A (en) * | 2013-04-18 | 2013-07-10 | 南京理工大学 | Biomass chained circulating hydrogen production device and process |
| CN108350370A (en) * | 2015-11-17 | 2018-07-31 | 杰富意钢铁株式会社 | The manufacturing method of the gasification process of carbonaceous fuel, the operating method of iron-smelter and gasifying gas |
| CN106673939A (en) * | 2016-12-13 | 2017-05-17 | 神雾环保技术股份有限公司 | System and method for preparing ethylene by coupling |
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Application publication date: 20120919 |