CN1132914C - Production process for making water-gas by using bitumite - Google Patents
Production process for making water-gas by using bitumite Download PDFInfo
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- CN1132914C CN1132914C CN 02120719 CN02120719A CN1132914C CN 1132914 C CN1132914 C CN 1132914C CN 02120719 CN02120719 CN 02120719 CN 02120719 A CN02120719 A CN 02120719A CN 1132914 C CN1132914 C CN 1132914C
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Abstract
The present invention relates to production technology for producing water gas by bitumite, which can be suitable for manufacturing water gas by an intermittent or continuous gas making furnace. The production technology of the intermittent gas making furnace comprises that bitumite is manufactured into moulded coal or block coal of bitumite which is put in the gas making furnace, and the gas blowing at the furnace bottom is carried out; when water vapor, or water vapor and air pass through a dry distillation layer from the upper part of the furnace after the gas is cleanly blown once again, the bitumite is conveyed to the dry distillation layer to release coal tar and other organic substances, which are pyrolyzed by an oxidizing layer at high temperature to form effective gas CO+H2, and the coal tar and the water gas which are not pyrolyzed pass through an ash layer and are absorbed by the ash layer; the water gas of the present invention is obtained. The continuous gas making furnace can cancel the first two steps, the direct bottom blowing gas making operation can be carried out, the traditional method for manufacturing the water gas by a superior smokeless block coal is changed, and the production cost is greatly reduced. The present invention provides a reliable technique for improving the production in medium and small nitrogenous fertilizer plants. The method has the advantages of easy operation, simple technology and high safety.
Description
(1) technical field
The present invention relates to a kind of production technique, belong to chemical field with bituminous coal manufacturing water-gas.
(2) background technology
Water-gas is to produce synthetic ammonia, methyl alcohol, dme, and the raw material of oil fuel also can be used for town gas, industrial combustion gas.
The manufacture method great majority of traditional water-gas are to adopt static bed gas making furnace, with high-quality anthracite block coal or coke is raw material, though it is abundant national that China is coal resource, but the high-quality anthracite output that adapts to static bed gas making furnace is less relatively, add that high-quality anthracite block coal price rises steadily in recent years, cause China's more than 600 tame middle-size and small-size nitrogen fertilizer plant costs to strengthen, enterprise is loss comprehensively almost, and reserves are big, low-cost bituminous coal too much causes total system to produce owing to producing water-gas coal tar and organism, the problem of up to the present still unresolved bituminous coal system water-gas.
(3) summary of the invention
Purpose of the present invention is just in order to solve the shortcoming and deficiency that above-mentioned prior art exists, can be according to coal tar in the bituminous coal at high temperature by the pyrolytic characteristic, a kind of production technique of making water-gas with flue gas is provided, thereby changed the technology prejudice of making water-gas with the high-quality anthracite block coal, reliable technique is provided also for simultaneously coming back to life of middle-size and small-size nitrogen fertilizer plant, makes nitrogen fertilizer plant start the climax of technical renovation once more.
The objective of the invention is to realize by following technical proposal:
Make the production technique of water-gas with the bituminous coal intermittent type, it is characterized in that it is undertaken by following step:
A) lump coal of bituminous coal being made moulded coal or the bituminous coal intermittent type static bed gas making furnace of packing into is blown from furnace bottom with air or oxygen-rich air and to be carried out oxidizing reaction, makes the zone of oxidation temperature in the stove reach 1100-1400 ℃;
B) once blow off with water vapor then, the air of furnace bottom or oxygen-rich air are blown off;
C) be blown into any gas water vapour or water vapor and air or water vapor and oxygen-rich air or water vapor and the oxygen from stove top, gas is brought the coal tar that discharges in the bituminous coal and other organism into the oxidized floor height of high temperature oxide layer warm separating together during by the destructive distillation layer in the stove and is available gas CO+H in the destructive distillation layer
2, can not adsorbed by lime-ash again after by ash bed on a small quantity by pyrolytic coal tar and water-gas, the water-gas of the present invention that makes is sent into gas holder;
D) carry out secondary with water vapor at last and blow off, the interior less water coal gas of furnace bottom is blown off, finished batch production water-gas.
Also can take a spot of blowing gas of going up, its time is for blowing below 50% of time traditionally.
Make the production technique of water-gas with the bituminous coal continous way, it is characterized in that it is undertaken by following step:
Be blown into any gas water vapour or water vapor and air or water vapor and oxygen-rich air or water vapor and the oxygen from stove top, gas is brought the coal tar that discharges in the bituminous coal and other organism into the oxidized floor height of high temperature oxide layer warm separating together during by the destructive distillation layer in the stove and is available gas CO+H in the destructive distillation layer
2, can not adsorbed by lime-ash again after by ash bed on a small quantity by pyrolytic coal tar and water-gas, obtained water-gas of the present invention.
Owing to take technique scheme, make the technology of the present invention compared with the prior art have following advantage and effect:
A) it adopts shaped coal of bituminous coal to make water-gas, has changed the method for traditional usefulness high-quality anthracite block coal system water-gas, has not only reduced production cost, also protects anthracitic resource;
B) its adopt to be blown, and once blows off, blows down the four big steps that gas and secondary blow off, more traditional blowing, once go up blowing gas, blow on gas, the secondary blowing gas down and compare with the five big steps that air blows off, the simplification technological process, easy to operate, security is good;
C) the bituminous coal quality is not had particular requirement, so raw material sources are extensive.
(4) description of drawings
Fig. 1 is the intermittent type Gas-making Furnace is made water-gas with bituminous coal a gas flow synoptic diagram.
(5) embodiment
Make the production technique of water-gas with intermittent type bituminous coal, with reference to shown in Figure 1,1 is air or oxygen-rich air valve among the figure, 2 is the water vapor lower valve, and 3 is valve on the water vapour, and 4 is by-pass valve control, 5 are the emptying valve, 6 is valve on the water-gas, and 7 is the water-gas lower valve, and 8 is air or oxygen-rich air valve.
At first bituminous coal is made moulded coal, all can as sphere or clavate, the lump coal that also can select bituminous coal is raw material, carry out oxidizing reaction with air or oxygen-rich air from the furnace bottom blowing, answer valve-off (2) this moment, (3), (8), (6), (7), Open valve (1), (4), (5) make stove internal oxidation layer temperature reach 1100-1400 ℃, and blowing pneumatic transmission residual neat recovering system, once blow off air or oxygen-rich air in the stove with water vapour then, to guarantee safety in production, this moment valve-off (1), (3), (5), (7), (8), open (2), (4), (6) water-gas of water-gas of Chan Shenging and production is sent into gas holder together and is reclaimed, blow gas with any gas in water vapour or water vapour and air or water vapour and oxygen-rich air or water vapour and the oxygen up and down from stove again, valve-off (1), (2), (4), (5), Open valve (3), (6), (7), treat Open valve (8) after 5 seconds, valve-off after 60 seconds (8), bring high temperature oxide layer together into when coal tar and other organism that gas discharges in the destructive distillation layer in bituminous coal during by the destructive distillation layer in the stove, warm the separating of oxidized floor height is available gas CO+H
2Can do not adsorbed by lime-ash again after by ash bed on a small quantity by pyrolytic coal tar and water-gas, the water coal is purified once more, the water-gas of making can be sent into gas holder and store, carry out secondary with water vapor at last and clean, answer valve-off (1), (3), (5), (7), (8) this moment, open (2), (4), (6), the interior a spot of water-gas of furnace bottom is blown off, make production safer.
Make water-gas with the bituminous coal continous way, gas flow is more simplified, more convenient operation, be blown into any gas water vapour or water vapor and air or water vapor and oxygen-rich air or water vapor and the oxygen from stove top, gas is brought coal tar and other organism of discharging in the bituminous coal into high temperature oxide layer during by the destructive distillation layer in the stove together in the destructive distillation layer, warm the separating of oxidized floor height is available gas CO+H
2, can not adsorbed by lime-ash again after by ash bed on a small quantity by pyrolytic coal tar and water-gas, obtained water-gas of the present invention.
Put into practice in * enterprise with production technique of the present invention, the bituminous coal composition of use is, moisture 4.88%, and ash content 25.56%, fixed carbon 41.81%, volatile matter 27.75%, 5577 kilocalories of thermal values, the water-gas composition of manufacturing is: CO
28%, O
20.8%, N
210.9%, CO 31.85%, H
247.53%, CH
40.92%, the result shows that making water-gas with bituminous coal is feasible technically, also is that reasonably production cost reduces greatly, makes middle-size and small-size nitrogen fertilizer plant obtain benefit economically.
Claims (2)
1, make the production technique of water-gas with the bituminous coal intermittent type, it is characterized in that it is undertaken by following step:
A) lump coal of bituminous coal being made moulded coal or the bituminous coal intermittent type static bed gas making furnace of packing into is blown from furnace bottom with air or oxygen-rich air and to be carried out oxidizing reaction, makes the zone of oxidation temperature in the stove reach 1100-1400 ℃;
B) once blow off with water vapor then, the air of furnace bottom or oxygen-rich air are blown off;
C) be blown into any gas water vapour or water vapor and air or water vapor and oxygen-rich air or water vapor and the oxygen from stove top, gas is brought the coal tar that discharges in the bituminous coal and other organism into the oxidized floor height of high temperature oxide layer warm separating together during by the destructive distillation layer in the stove and is available gas CO+H in the destructive distillation layer
2, can not adsorbed by lime-ash again after by ash bed on a small quantity by pyrolytic coal tar and water-gas, the water-gas of the present invention that makes is sent into gas holder;
D) carry out secondary with water vapor at last and blow off, the interior less water coal gas of furnace bottom is blown off, finished batch production water-gas.
2, the production technique of manufacturing water-gas according to claim 1 is characterized in that also can taking a spot of blowing gas of going up, and its time is for blowing below 50% of time traditionally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02120719 CN1132914C (en) | 2002-05-29 | 2002-05-29 | Production process for making water-gas by using bitumite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02120719 CN1132914C (en) | 2002-05-29 | 2002-05-29 | Production process for making water-gas by using bitumite |
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| Publication Number | Publication Date |
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| CN1380378A CN1380378A (en) | 2002-11-20 |
| CN1132914C true CN1132914C (en) | 2003-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02120719 Expired - Fee Related CN1132914C (en) | 2002-05-29 | 2002-05-29 | Production process for making water-gas by using bitumite |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215478B (en) * | 2008-01-04 | 2010-12-15 | 郭海峰 | Oxygen-increasing intermittent gasification method and technique for fixed bed coal gas producer |
| CN101328433B (en) * | 2008-07-31 | 2011-05-11 | 攀钢集团钛业有限责任公司 | Method for preparing coal gas from molded coal |
| CN101497819B (en) * | 2009-03-06 | 2012-07-25 | 武汉奥泰自动化工程有限责任公司 | Oxygenation intermittent coal gas preparation |
| CN102199461A (en) * | 2011-04-19 | 2011-09-28 | 上海吴淞煤气制气有限公司 | Normal pressure intermittent natural gas reforming process and device |
| CN103074110A (en) * | 2013-01-28 | 2013-05-01 | 柳州化工股份有限公司 | Production method of continuous semi-fluidized fixed bed semi-water gas |
| CN104862012B (en) * | 2015-06-13 | 2017-09-26 | 山西晋煤集团技术研究院有限责任公司 | The atmospheric fixed bed intermittent gasification device and method of high-sulfur anthracite block coal |
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2002
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Granted publication date: 20031231 Termination date: 20120529 |