CN103304372A - Method for preparing methanol by sensible heat of blast furnace slag - Google Patents
Method for preparing methanol by sensible heat of blast furnace slag Download PDFInfo
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- CN103304372A CN103304372A CN2013102404679A CN201310240467A CN103304372A CN 103304372 A CN103304372 A CN 103304372A CN 2013102404679 A CN2013102404679 A CN 2013102404679A CN 201310240467 A CN201310240467 A CN 201310240467A CN 103304372 A CN103304372 A CN 103304372A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P10/25—Process efficiency
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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
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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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention belongs to the technical field of waste head and complementary energy recovery in iron and steel Industry, and in particular relates to a method for preparing methanol by sensible heat of blast furnace slag. The method comprises the following steps: blast furnace slag enters into a sensible heat recovery device; reactants enter into a grain slag packed bed to be preheated, and enter into a graining reactor when the temperature reaches 600 DEG C; the reactants enter into the graining reactor for reaction at 850 DEG C and at one barometric pressure to generate methanol. High temperature residual heat resources of liquid blast furnace slag are efficiently, economically and environment-friendlily used in an energy-saving manner. Treated blast furnace slag can meet the demand of cement manufacturing, and methanol produced belongs to a product widely applied with high additional value. Ternary reforming reaction of methane can realize part of self-heat supply, so that the energy efficiency in the reaction process is greatly enhanced, the cost is lowered, and carbon deposited on the surface of the catalyst can be alleviated or even eliminated. Coke oven gas resource is adequately utilized, the energy resource is saved, carbon dioxide in flue gas is utilized, and emission of greenhouse gases is reduced, so that the method is energy-saving and environment-friendly.
Description
Technical field
The invention belongs to Iron And Steel Industry residual heat and energy recovery technology field, is the novel method that reclaims the blast furnace slag waste heat, and more definite says, is a kind of method of utilizing blast-furnace cement sensible heat to prepare methyl alcohol.
Background technology
Iron And Steel Industry is for the development of national economy provides important basic raw material, belongs to the energy, resource-integrated industry that resource consumption is large.Along with the rapid growth of iron and steel output, resource, the energy and pollutant emission have become the restrictive factor that restriction China Iron And Steel Industry further develops.Although Iron And Steel Industry is power consumption and blowdown rich and influential family in the national economy field, also be one of industry that has the energy-saving and emission-reduction potentiality simultaneously.Wherein, recycling various waste heats is further energy-conservation important breakthrough mouths of Iron And Steel Industry.Blast furnace slag is the solid waste that blast furnace ironmaking produces, but the liquid blast furnace temperature is drawn materials easily about 1500 ℃ simultaneously, and the sensible heat high is the unusual residual heat resources of high-quality.Chinese pig iron output was about 6.3 hundred million tons in 2011, produced approximately 1.9 hundred million tons of blast furnace slags, calculated according to mean specific heat 1.05kJ/ (kg ℃), and blast furnace slag is cooled to envrionment temperature from 1500 ℃, the sensible heat of taking away approximately 2.94 * 10
8GJ amounts to approximately 1,000 ten thousand tons of standard coals.As seen, the sensible heat that reclaims blast furnace slag reduces discharging Energy-saving of Iron And Steel Industry, improves efficiency of energy utilization most important.
At present; China's blast furnace slag is processed and is all adopted water quenching; comprise the several different methods such as Lhasa method (RASA), INBA method, wheel method, Ming Tefa, settling tank; the common feature of these methods is to have adopted different process units the warm sludge water quenching granulating; after with different devices pulp water being separated slag is exported; namely mainly take away slag heat by water, its heat utilization rate is extremely low.Simultaneously, the water consumption is very high, 0.8 ~ 1.2 ton of 1 ton of grain slag consumption of new water of punching, and quantity of circulating water is about about 10 tons.So-called heat energy utilization is exactly that the hot water that will produce in the blast furnace water quenching process of cooling is used for warming, owing to drained by air-cooled or outer draining, namely contaminate environment wastes energy again.In addition, the H that produces in the Water Quenching Slag process
2S and the restriction of arriving conditions such as supplying thermal region, flow, existing slag heat utilization rate less than 15%.And spring, summer, three seasons of autumn can not use, SO is passed through in large calorimetric
2Enter atmosphere with steam, contaminate environment.
At present, the blast furnace slag exhaust heat recovering method mainly contains Physical and chemical method both at home and abroad.Physical is to utilize heat transferring medium (multiplex pressurized air) or heat exchange coil directly to carry out heat exchange with blast furnace slag, generation warm air or water vapour.The wind that mainly comprises dry process quench method, cylinder rotary drum method and centrifugal granulation method.These methods all are not widely applied at present, mainly be because: temperature was high when (1) blast furnace slag was discharged, and it is huge that it contains heat, and the specific heat of air is lower, reclaim blast-furnace cement sensible heat take air as heat transferring medium and will certainly cause the wind slag ratio larger, power consumption is large; (2) the metallurgical slag particle that obtains of dry granulation waste heat recovery is less, and particle is lower in fixed bed, fluidized-bed mesoporosity rate, causes the air blast resistance increment, thereby has increased the power consumption of residual neat recovering system; (3) high temperature air drives waste heat boiler and produces the quadratic loss that steam causes energy, also has simultaneously power consumption.Chemical method is that the heat of blast furnace slag is recycled as the thermal source of chemical reaction.Mainly contain hydrogen manufacturing, coal gas processed, utilize slag direct production product etc.The above-mentioned scheme of utilizing chemical reaction to reclaim blast-furnace cement sensible heat substantially all is in theory study and laboratory study stage, also has with a certain distance from practical application.
Methyl alcohol more and more comes into one's own in life, and it namely can be used as Organic Chemicals, can be used for again the fields such as organic synthesis, agricultural chemicals, medicine, coating, dyestuff and national defense industry.Along with socioeconomic rapid growth, the energy, environmental problem become increasingly conspicuous, and the methyl alcohol ratio of using that acts as a fuel is increasing.Over nearly 20 years, the methanol production development is very fast, technology improves constantly, industrial scale enlarges year by year, production technique is progressively ripe, and all technical is constantly perfect, particularly the in recent years development and application of methanol vapor, diesel oil, make it as fuel substitute, had very strong competitive power from technical, economy.The average annual growth of estimating 2005～2010 years world methanol demands is 2. 46%, will reach 4,020 ten thousand tons to world methanol demand in 2010; The average annual growth in 2010～2015 years is 4. 63%, will reach 5,040 ten thousand tons in 2015.Methanol-to-olefins (MTO/ MTP) and dme (DME) will be the following major impetus that drives the growth of the methyl alcohol market requirement, and China will be the major area of methyl alcohol demand.Expect world methanol throughput in 2010 and will reach 6400wt/ a, reached 7200wt/ a in 2015, deliverability is greater than the market requirement, and competition will aggravate, and the methanol device in the dingus that some are competitiveless or the higher area of cost of material will be closed.Build trend according to following methanol device, the production center of world methanol to South America, Saudi Arabia, Iran and China shifts; The target market of these countries and regions methanol product mainly is for the Asian-Pacific area and China simultaneously.The main path of methyl alcohol processed is preparing synthetic gas at present.There is the shortcoming of high cost in methane preparing synthetic gas workshop section in Technological Economy, the efficient that improves methane process for preparing synthetic gas process is the key that determines the Sweet natural gas indirect utilization.Therefore, develop new, efficient process for the production of cheap synthetic gas, become the target that the countries in the world investigators pursue always.Mainly contain three approach by the methane preparing synthetic gas: methane vapor reforming (SRM), carbonic acid gas methane reforming (CDR) and methane portion oxidation (POM).The chemical reaction that these three processes occur is mainly: CH
4+ H
2O=CO+3H
2Δ H=206 kJ/mol (1), CH
4+ CO
2=2CO+2H
2Δ H=247 kJ/mol, (2) CH
4+ 0.5O
2=CO+2H
2Δ H=-36 kJ/mol(3).Yet these three routes respectively have relative merits.Methane vapor reforming (SRM) is industrialization ripening process for many years, but there are some larger shortcomings in this process: severe reaction conditions (more than the IO73K), the process energy consumption is large, and is high to equipment requirements.In addition, the synthetic gas of production (the HZ/CO ratio is more than 3.0) is suitable for synthetic ammonia and hydrogen manufacturing, is not suitable for producing the downstream processes such as liquid fuel, methyl alcohol.The characteristics of carbonic acid gas methane reforming (CDR) are to utilize simultaneously CO: and C field two large greenhouse gases, be the process of typical " turning waste into wealth ".But this process exists serious carbon distribution and Catalysts Deactivation Problems, and simultaneously its reaction itself also is the process of a high energy consumption; At present not yet industrialization.Methane portion oxidation (PoM) is an exothermic medium reaction, and the H of product synthetic gas
2/ CO ratio is about 2.0, is fit to very much the synthetic source of the gas of F-T and methyl alcohol.But process reaction speed is quite fast, and reaction process is wayward.In addition, there is explosion hazard in the mixing of unstripped gas.This process is not yet industrialization at present.
Summary of the invention
Goal of the invention
For the liquid blast furnace water quenching have that water consumption is large, heat can not effective recycling and dry type reclaims that the wind slag ratio is large, power consumption is higher, the heat energy quality reduces and synthetic gas production process in the problems such as large, the severe reaction conditions of the carbon distribution, the energy consumption that run into, catalyst deactivation, the invention provides a kind of new method of utilizing blast-furnace cement sensible heat methyl alcohol processed, thereby purpose is efficiently, the discharging of economy, environmental protection, energy-conservation the high-temperature residual heat resource of utilizing liquid blast furnace and minimizing carbonic acid gas reaches that to utilize fully coke-oven gas to produce efficiently methyl alcohol further energy-conservation.
Technical scheme
A kind of method of utilizing blast-furnace cement sensible heat methyl alcohol processed is characterized in that: the method step is as follows:
(1), blast furnace slag enters heat recovering device;
(2), reactant enters the grain slag packed bed and is preheated, temperature reaches 600 ° of C and enters later on the granulation reactor;
(3), reactant enters behind the granulation reactor at 850 ° of C, methanol reacts under 1 normal atmosphere.
Above-mentioned reactant preheating and the heat that reacts required all come from blast-furnace cement sensible heat.
The related reaction of step (3) is methane ternary reforming reaction and synthesising gas systeming carbinol reaction.
The concrete reaction formula of described methane ternary reforming reaction is:
CH
4+ H
2O = CO + 3H
2 ΔH = 206 kJ /mol （1）
CH
4+ CO
2= 2CO + 2H
2 ΔH = 247 kJ /mol （2）
CH
4+ 0.5O
2= CO + 2H
2 ΔH = －36 kJ /mol（3）。
Described synthesising gas systeming carbinol reaction is: CO+2H
2=CH
3OH Δ H=-91 kJ/mol(4).
Total reaction is:
CH
4+ 0.687H
2O+0.1O
2+ 0.337CO
2=1.24CH
3OH+0.16H
2O+0.077CO
2+ 0.02CH
4, the transformation efficiency 98% of methane wherein, the transformation efficiency of water vapor is 76.2%, carbon dioxide conversion be 77.7%, the transformation efficiency of oxygen is close to 100%.
Methane in the reactant comes from coke-oven gas.
Water vapour in the reactant is from steam pipe system.
Carbonic acid gas in the reactant comes from flue gas.
Oxygen in the reactant is provided by air.
Advantage and effect
Advantage of the present invention and positively effect are as follows:
The invention provides a kind of method of utilizing blast-furnace cement sensible heat methyl alcohol processed, efficiently, economy, environmental protection, energy-conservation the high-temperature residual heat resource of having utilized liquid blast furnace, and the blast furnace slag after processing can satisfy the requirement of making cement, the methyl alcohol of producing belongs to widely used high value added product, meets " methyl alcohol economy " development need in future.And methane ternary reforming reaction can realize part from heat supply, and this has promoted the efficiency of reaction process greatly, reduces cost, and the carbon distribution problem of catalyst surface also can be alleviated even eliminate to this reaction.Moreover, this method has also been utilized the coke-oven gas resource fully, has saved the energy, has utilized the carbonic acid gas in the flue gas, has reduced the discharging of greenhouse gases, energy-conservation and environmental protection.
Description of drawings
Fig. 1 is this method flow diagram that utilizes blast-furnace cement sensible heat methyl alcohol processed of the present invention;
Fig. 2 is granulation reactor and the grain slag packed bed that the present invention reacts.
Description of reference numerals:
1, tundish, 2, slag stream pipe, 3, the granulation reactor, 4, revolving cup, 5, frequency control motor, 6, the grain slag packed bed, 7, endless tube, 8, nozzle, 9, pneumatic outlet, 10, the rotation ventilation terminal, 11, motor, 12 rotary discharge valves.
Embodiment
The present invention is described further below in conjunction with accompanying drawing:
The present invention proposes a kind of method of utilizing blast-furnace cement sensible heat methyl alcohol processed, it is characterized in that: the method step is as follows:
(1), blast furnace slag enters heat recovering device;
(2), reactant enters the grain slag packed bed and is preheated, temperature reaches 600 ° of C and enters later on the granulation reactor;
(3), reactant enters behind the granulation reactor at 850 ° of C, methanol reacts under 1 normal atmosphere.
Above-mentioned reactant preheating and the heat that reacts required all come from blast-furnace cement sensible heat.
The related reaction of step (3) is methane ternary reforming reaction and synthesising gas systeming carbinol reaction.
The concrete reaction formula of described methane ternary reforming reaction is:
CH
4+ H
2O = CO + 3H
2 ΔH = 206 kJ /mol （1）
CH
4+ CO
2= 2CO + 2H
2 ΔH = 247 kJ /mol （2）
CH
4+ 0.5O
2= CO + 2H
2 ΔH = －36 kJ /mol（3）。
Described synthesising gas systeming carbinol reaction is: CO+2H
2=CH
3OH Δ H=-91 kJ/mol(4).
Total reaction is:
CH
4+ 0.687H
2O+0.1O
2+ 0.337CO
2=1.24CH
3OH+0.16H
2O+0.077CO
2+ 0.02CH
4, the transformation efficiency 98% of methane wherein, the transformation efficiency of water vapor is 76.2%, carbon dioxide conversion be 77.7%, the transformation efficiency of oxygen is close to 100%.
Methane in the reactant comes from coke-oven gas; Water vapour in the reactant is from steam pipe system; Carbonic acid gas in the reactant comes from flue gas; Oxygen in the reactant is provided by air.
Fig. 1 is schema of the present invention, as shown in fig. 1:
(1) liquid blast furnace (1450 ℃ of temperature) that flows out through slag runner from blast furnace; flow into tundish 1; flow in the granulation reactor 3 of below through slag stream pipe 2; fall on the revolving cup 4; tangentially direction throws away under centrifugal action; be fractured into diameter less than drop and the slag particle of 10mm, will account for total amount (CH simultaneously
4-air-CO
2The mixed gas total amount) 10 ~ 20% CH
4-air-CO
2And the water vapour mixed gas tangentially sprays into the granulation reactor by the endless tube 7 of granulation reactor circumference through 6-8 rectangular nozzle; high temperature drop and slag particle be further broken and cooling under the wind effect of mixed gas, and last all high temperature drops all are solidified as the high temperature slag particle.
(2) account for total amount (CH
4-air-CO
2The mixed gas total amount) 80 ~ 90% CH
4-air-CO
2Mixed gas is entered by its underpart after 6 preheatings of grain slag packed bed, and accounts for total amount (CH by nozzle 8 along what spray in the other direction
4-air-CO
2The mixed gas total amount) 10 ~ 20% mixed gas mixes, directly contact with slag particle with the high temperature drop, and take blast furnace slag as catalyzer with heat-transfer medium, under the katalysis of blast furnace slag, reaction methanol (CH
3OH), finish for the first time strong heat exchange, methyl alcohol is discharged granulation reactor 3 by pneumatic outlet 9; The high temperature slag particle is being down to 800 ~ 900 ℃ greater than 10 ℃/temperature, efficiently the sensible heat of liquid blast furnace is changed into the chemical energy of the methyl alcohol of high additional utility value, and this stage is the quench zone of liquid blast furnace.
(3) under action of gravity, above-mentioned high temperature slag particle enters the grain slag packed bed 6 of granulation reactor 3 belows and is the CH of 1:0.5:0.337 with entering through the upstream mol ratio of granulation slag blanket by grain slag packed bed 6 belows
4-air-CO
2Mixed gas carries out the thermal exchange second time, and high temperature slag particle temperature is down to about 200 ℃, and the mixed gas temperature is risen to more than 600 ℃ by normal temperature, and this stage is the slow cooling section of blast furnace slag; Cooled blast furnace slag particle is discharged by the rotary discharge valve 12 of bottom.
The mixed gas that is used for the cooling blast furnace slag is entered by the gas feed 9 that is located at grain slag packed bed 6 bottoms; after rotation ventilation terminal 10 evenly distributes; enter grain slag packed bed 6; and carry out countercurrent flow with the blast furnace slag blanket of slow decreasing; blast furnace slag is further cooled off; mixed gas through with the heat exchange of blast furnace slag blanket after be preheating to more than 600 ℃; enter granulation reactor 3 from grain slag packed bed 6 tops; converge with the mixed gas that is sprayed into by nozzle 8 in granulation reactor 3, methanol reacts.
Method of the present invention mainly is the high temperature sensible heat that utilizes liquid blast furnace for methyl alcohol synthetic provides required heat, and its reaction conditions is 850 ° of C, and under 1 normal atmosphere, catalyzer is nickel-base catalyst.
Net reaction of the present invention is:
CH
4+ 0.687H
2O+0.1O
2+ 0.337CO
2=1.24CH
3OH+0.16H
2O+0.077CO
2+ 0.02CH
4, the transformation efficiency 98% of methane wherein, the transformation efficiency of water vapour is 76.2%, and the transformation efficiency of carbonic acid gas is 77.7%, and the transformation efficiency of oxygen is near 100%.
Can produce the required heat of every gram methyl alcohol according to each reaction formula of ternary reformation is 1290kJ, in the granulation reactor gas mixture is heated to 850 ° of required heats of C from 600 ° of C again and is respectively;
Q
CH4 =C
CH4mΔt=
，
Q
Empty=C
EmptyM Δ t=
,
Q
CO2=C
CO2mΔt=
，
Δ H
Always=1290+451+103+114=1958kJ,
One ton of blast furnace slag from the sensible heat that 1450 ° of C drop to 850 ° of C is in the granulation reactor:
Q
1=C
Slag 1M Δ t=
,
Then the quantity of methyl alcohol that can produce of the sensible heat of one ton of blast furnace slag is: m=
,
And the amount of required reactant is respectively methane 163.6kg, air 148.2kg, carbonic acid gas 151.8kg.
In the grain slag packed bed, the high temperature slag particle carries out slow cooling, and temperature is reduced to 200 ℃ by 850 ℃, then:
Q
2=C
Slag 2M Δ t=
,
Enter the CH of granulation reactor
4-air-CO
2The physical thermal of mixed gas:
Q
1 CH4=
，
Q
1 Empty=
,
Q
1 CO2=
，
Q
Premix=Q
1 CH4+ Q
1 Empty+ Q
1 CO2=480472kJ,
The required heat exchange efficiency of this heat transfer process is:
As seen, the no matter quench zone in the granulation reactor or the slow cooling section of grain slag packed bed, the sensible heat of blast furnace slag all is enough to satisfy the heat demand of reaction and heat exchange.
In sum, the liquid blast furnace sensible heat is used for CH
4-H
2O-air-CO
2The mixed gas synthesizing methanol, blast furnace slag per ton can produce 406kg methyl alcohol.
Calculate according to this, the steel mill that annual production is 5,000,000 tons, it produces blast furnace quantity of slag per year is 900,000 tons.Then the output of every day is 2466 tons of slags, namely can produce 1002 tons of methyl alcohol every day, and the volumetric flow rate that can get like this methane is 6.56m
3/ s, the volumetric flow rate of water vapour is 4.51 m
3/ s, air be 3.12 m
3/ s, carbonic acid gas be 2.21 m
3/ s.
In the aforesaid method process, reclaimed efficiently the sensible heat of blast furnace slag with the form of methyl alcohol chemical energy.Liquid blast furnace is cooled off; and solved in the existing Treating Methods for BF Slag that water quenching water consumption is large, heat can not effective recycling and dry type reclaim that the wind slag ratio is large, the problems such as power consumption is higher, the reduction of heat energy quality; both reclaim the high-quality sensible heat of liquid blast furnace, protected again environment.This reaction has utilized methane in the coke-oven gas and the carbonic acid gas in the flue gas, has reduced the use of the external application energy and the discharging of carbonic acid gas, energy-conservation again environmental protection.In addition, with respect to methane carbon dioxide reformation, steam reforming and the partial oxidation problems such as carbon distribution, energy consumption that the path of these three preparing synthetic gas runs into are large, severe reaction conditions, catalyst deactivation of reforming, since the ternary reforming reaction is alleviated even has been eliminated problem, part realizes having reduced energy expenditure from heat supply, efficiently methanol.
Claims (10)
1. method of utilizing blast-furnace cement sensible heat methyl alcohol processed, it is characterized in that: the method step is as follows:
(1), blast furnace slag enters heat recovering device;
(2), reactant enters the grain slag packed bed and is preheated, temperature reaches 600 ° of C and enters later on the granulation reactor;
(3), reactant enters behind the granulation reactor at 850 ° of C, methanol reacts under 1 normal atmosphere.
2. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 1, it is characterized in that: reactant preheating and the heat that reacts required all come from blast-furnace cement sensible heat.
3. according to the method for utilizing blast-furnace cement sensible heat methyl alcohol processed claimed in claim 1, it is characterized in that: the related reaction of step (3) is methane ternary reforming reaction and synthesising gas systeming carbinol reaction.
4. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 3, it is characterized in that: the concrete reaction formula of described methane ternary reforming reaction is:
CH
4+ H
2O = CO + 3H
2 ΔH = 206 kJ /mol （1）
CH
4+ CO
2= 2CO + 2H
2 ΔH = 247 kJ /mol （2）
CH
4+ 0.5O
2= CO + 2H
2 ΔH = －36 kJ /mol（3）。
5. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 3 is characterized in that: described synthesising gas systeming carbinol reaction is: CO+2H
2=CH
3OH Δ H=-91 kJ/mol(4).
6. according to claim 3, the 4 or 5 described methods of utilizing blast-furnace cement sensible heat methyl alcohol processed, it is characterized in that: total reaction is:
CH
4+ 0.687H
2O+0.1O
2+ 0.337CO
2=1.24CH
3OH+0.16H
2O+0.077CO
2+ 0.02CH
4, the transformation efficiency 98% of methane wherein, the transformation efficiency of water vapor is 76.2%, carbon dioxide conversion be 77.7%, the transformation efficiency of oxygen is close to 100%.
7. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 1, it is characterized in that: the methane in the reactant comes from coke-oven gas.
8. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 1, it is characterized in that: the water vapour in the reactant is from steam pipe system.
9. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 1, it is characterized in that: the carbonic acid gas in the reactant comes from flue gas.
10. the method for utilizing blast-furnace cement sensible heat methyl alcohol processed according to claim 1, it is characterized in that: the oxygen in the reactant is provided by air.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787277A (en) * | 2014-01-15 | 2014-05-14 | 中钢集团鞍山热能研究院有限公司 | Method and device for producing synthesis gas through methane reforming with blast furnace slag sensible heat |
| CN104789719A (en) * | 2015-05-08 | 2015-07-22 | 青岛德施普工程技术有限公司 | Slag/calcium carbide cooling and waste heat recycling system |
| CN104805238A (en) * | 2015-05-08 | 2015-07-29 | 青岛德施普工程技术有限公司 | Steel slag/calcium carbide cooling and pelletizing equipment |
| CN108302953A (en) * | 2018-03-27 | 2018-07-20 | 中山大学 | A kind of industrial high temperature solid granule residual neat recovering system and method |
| CN109305889A (en) * | 2018-11-26 | 2019-02-05 | 清华四川能源互联网研究院 | Method, methane synthesizing method and the system for methanol synthesis of thermal energy intervention in synthesis gas manufacture |
| CN113825845A (en) * | 2019-05-14 | 2021-12-21 | 保尔伍斯股份有限公司 | Method for operating a metallurgical furnace |
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| 姜洪涛等: "甲烷三重整制合成气", 《化学进展》 * |
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| CN103787277B (en) * | 2014-01-15 | 2015-09-30 | 中钢集团鞍山热能研究院有限公司 | A kind of utilize blast-furnace cement sensible heat to carry out reforming of methane on Ni-Ce method and device |
| CN104789719A (en) * | 2015-05-08 | 2015-07-22 | 青岛德施普工程技术有限公司 | Slag/calcium carbide cooling and waste heat recycling system |
| CN104805238A (en) * | 2015-05-08 | 2015-07-29 | 青岛德施普工程技术有限公司 | Steel slag/calcium carbide cooling and pelletizing equipment |
| CN104805238B (en) * | 2015-05-08 | 2018-09-04 | 青岛德施普工程技术有限公司 | Slag/calcium carbide cools down granulation apparatus |
| CN108302953A (en) * | 2018-03-27 | 2018-07-20 | 中山大学 | A kind of industrial high temperature solid granule residual neat recovering system and method |
| CN108302953B (en) * | 2018-03-27 | 2024-04-30 | 中山大学 | Industrial high-temperature solid bulk waste heat recovery system and method |
| CN109305889A (en) * | 2018-11-26 | 2019-02-05 | 清华四川能源互联网研究院 | Method, methane synthesizing method and the system for methanol synthesis of thermal energy intervention in synthesis gas manufacture |
| CN109305889B (en) * | 2018-11-26 | 2021-11-30 | 清华四川能源互联网研究院 | Heat energy intervention method in synthesis gas production, methanol synthesis method and methanol synthesis system |
| CN113825845A (en) * | 2019-05-14 | 2021-12-21 | 保尔伍斯股份有限公司 | Method for operating a metallurgical furnace |
| US11591662B2 (en) | 2019-05-14 | 2023-02-28 | Paul Wurth S.A. | Method for operating a metallurgical furnace |
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