CN106753573A - A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network system and method for coal gasification - Google Patents
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network system and method for coal gasification Download PDFInfo
- Publication number
- CN106753573A CN106753573A CN201611216203.XA CN201611216203A CN106753573A CN 106753573 A CN106753573 A CN 106753573A CN 201611216203 A CN201611216203 A CN 201611216203A CN 106753573 A CN106753573 A CN 106753573A
- Authority
- CN
- China
- Prior art keywords
- coal
- electric arc
- arc furnaces
- molten iron
- gas
- 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.)
- Granted
Links
Classifications
-
- 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
- C10J3/485—Entrained flow gasifiers
-
- 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
- C10J3/57—Gasification using molten salts or metals
-
- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/06—Catalysts as integral part of gasifiers
-
- 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
- C10J2300/0969—Carbon dioxide
-
- 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
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
-
- 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
- C10J2300/12—Heating the gasifier
- C10J2300/1246—Heating the gasifier by external or indirect heating
-
- 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
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1656—Conversion of synthesis gas to chemicals
- C10J2300/1662—Conversion of synthesis gas to chemicals to methane (SNG)
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
The present invention provides the peak load regulation network system and method that a kind of electric arc furnaces dual chamber iron bathes coal gasification, the system includes electric supply installation, molten iron electric arc furnaces, coal gasifier, the electric supply installation connects the molten iron electric arc furnaces, the molten iron electric arc furnaces is connected by upper connecting tube and lower connecting tube with the coal gasifier, and the mouth of pipe of connecting tube and lower connecting tube is gone up in the molten iron electric arc furnaces apart from H1With the mouth of pipe of upper connecting tube and lower connecting tube in the coal gasifier apart from H3Meet relationship below：H3<0.953H1；The electric supply installation is connected with power network.Methods described is to use said system, first heats molten iron in molten iron electric arc furnaces and coal gasifier, its temperature is reached 1500 ~ 1600 DEG C；The coal dust and calcium carbonate mixed-powder for being carried using preheating gasifying agent again are sprayed into coal gasifier and carry out coal gasification reaction, absorb the heat of molten iron in coal gasifier and molten iron electric arc furnaces；Finally coal gas of high temperature is used to prepare town gas or chemical products.
Description
Technical field
The present invention relates to the comprehensive utilization of power network electric energy, and in particular to a kind of power network of electric arc furnaces dual chamber iron bath coal gasification is adjusted
Peak system and method.
Background technology
At present, thermal power generation is the main generation mode of China.In recent years, with our people's growth in the living standard and
The adjustment of the industrial structure, whole society's power structure has a very large change, and causes each bulk power grid peak-valley difference to increase increasingly.Electric power
Requirement also more and more higher of the enterprise at aspects such as Supply Security, reliability and the qualities of power supply.Network load is distributed not with the time
Balance, power network daily load is presented regular change with the time, and grid generation unit will simultaneously meet two electricity consumptions of period of peak valley
Demand.Power network low ebb load only has the 60% of peak load of grid, and power network valley electricity can not be utilized effectively.This causes in power network
Power cuts to limit consumption is needed during load peak, and then needs to cut off many units during low ebb.Generating set frequent start-stop can not only increase
Energy consumption, makes power equipment decrease in power generation efficiency, economic benefit reduction, and can influence the service life of generating set.2014
More than 300,000 kilowatts thermal power generating equipment annual occupancies of China are only 45%, and for today of energy shortage, this can be caused greatly
Energy waste and resources loss.At present, China's peak load regulation network ability is difficult to meet growing objective peak regulation demand, and power network is adjusted
The development of peak technology is significant for the peaking problem being on the rise.
According to the difference of peak regulation method, current peak regulation technique is broadly divided into unit operation peak regulation and the class of storage peak regulation two.
Unit operation peak regulation mainly includes the idle operation of few vapour, underrun and two-shift operation.Few vapour is idle, and to operate in electricity consumption low
The load of unit is reduced to zero during paddy, unit is in the idle state of rated speed rotation；Underrun is by changing
The load of unit meets the peak regulation demand of power network；Two-shift operation according to the Distribution dynamics of the daily load curve of power network, white
Its unit normally runs, and night then shuts down 6-8h in network load low ebb.Few idle operation of vapour and underrun are present
The serious problem of energy waste.The peak regulation method of two-shift operation is then strict to equipment operation parameter requirement, and security is relatively low.
Storage peak regulation is the inexorable trend of China or even world power grid peak regulation.According to the difference of way of energy storage, power network accumulation of energy
Peak regulation can be divided into：(1) mechanical energy accumulator：Water-storage, Caes；(2) heat energy accumulation of energy：Hot water heat storage boiler, combustion
Gas cogeneration of heat and power, energy accumulation air conditioner technology；(3) electrochemistry accumulation of energy：Battery, fuel cell；(4) chemical energy accumulation of energy：Electrolytic aluminium,
Water electrolysis hydrogen production.In current storage peak regulation technology, water-storage peak regulation technique, hot water heat storage boiler, gas cogeneration
And energy accumulation air conditioner technology is limited by season and region；The Caes technology slow very flexible of peak regulation speed；Store
Battery, fuel cell storage peak regulation technology energy conversion efficiency is high, but memory capacity and generated output are the limits of its technology development
Link processed.Compared with other energy accumulating techniques, chemical energy accumulation of energy has certain advantage, and the technology is suitable for power network kurtosis,
Chemical products is prepared using valley period power, the utilization rate of grid equipment is improved to the full extent, reduce peak-valley difference, it is ensured that be efficient
Efficient energy conversion.In the research and development of current chemical energy energy accumulating technique, water electrolysis hydrogen production technology has environmental protection, free of contamination excellent
Point, the hydrogen of high added value is can obtain using the technology, but its cost of investment is high, less economical；There is pollution in aluminum electrolysis technology
Serious problem, and in today of aluminium production capacity surplus, peak load regulation network is carried out by aluminum electrolysis technology not dominant.
The content of the invention
For the problem that prior art is present, the present invention provides the peak load regulation network system that a kind of electric arc furnaces dual chamber iron bathes coal gasification
System and method, the system and method are based on iron and bathe Coal Gasification Technology, i.e., prepare coal gas of high temperature using valley period power, and then prepare city
City's coal gas/chemical industry synthesis gas, belongs to a kind of new chemical energy energy accumulating technique.The technical solution adopted by the present invention is：
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network system of coal gasification, including electric supply installation, molten iron electric arc furnaces, coal gasifier,
The electric supply installation connects the molten iron electric arc furnaces, and the molten iron electric arc furnaces is by upper connecting tube and lower connecting tube and the coal gas
Change stove connection, and the mouth of pipe of connecting tube and lower connecting tube is gone up in the molten iron electric arc furnaces apart from H1On the coal gasifier
The mouth of pipe of connecting tube and lower connecting tube is apart from H3Meet relationship below：H3<0.953H1；The electric supply installation connects with power network
Connect.
Further, the system also includes heat exchanger and deduster, and the heat exchanger connects the coal gasifier, described
Deduster connects the heat exchanger.
Further, the electric supply installation includes the peak valley modulator being connected with power network, and the peak valley modulator connects successively
Fuse, transformer, transformer, short net are connect, the short Netcom crosses heating electrode and connects the molten iron electric arc furnaces.
Further, the heating electrode is graphite electrode.
Further, the coal gasifier is provided with substance nozzle, gas vent, slag exit, and the substance nozzle is vertical
It is arranged at the coal gasifier top；Or the substance nozzle is arranged on the coal gasifier sidepiece, and the substance nozzle
It it is 10 ° ~ 45 ° with the angle of the coal gasification furnace sidewall.
Further, the system can also include town gas processing unit, and the town gas processing unit includes
Gas composition adjusting means and syngas reactor, the gas composition adjusting means are used to pass through vapor transformationreation
Regulation CO and H2Mol ratio be 1:3, the syngas reactor be used for by from the gas composition adjusting means out
Gaseous mixture is completely converted into town gas by methanation reaction, and the gas composition adjusting means connects the deduster.
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network method of coal gasification, is to use above-mentioned peak load regulation network system, including with
Lower step：
（1）Actual power consumption according to the paddy phase determines peak load regulation network amount, sets power load, and determine the peak load regulation network system
Quantity；If using 1 set of peak load regulation network system, being directly entered step（2）；If will be many using many set peak load regulation network systems
Step is entered back into after the system parallel connection of set peak load regulation network（2）；
（2）Will electric current introduce heated in molten iron electric arc furnaces molten iron to molten iron electric arc furnaces and coal gasification in-furnace temperature reach 1500 ~
1600 DEG C and stabilization；
（3）Gasifying agent is preheated to 200 ~ 400 DEG C, coal dust and the calcium carbonate mixing that preheating gasifying agent is carried are sprayed into from substance nozzle
Coal gasification reaction is carried out in powder to coal gasifier, coal gas of high temperature is obtained；
（4）Coal gas of high temperature is used to prepare town gas or chemical products.
In the above method, the gasifying agent is CO2, vapor, richness CO2One or more mixing in flue gas.
In the above method, it is described preheating gasifying agent carry coal dust and calcium carbonate mixed-powder, wherein gasifying agent, coal dust and
The mol ratio of the O in C and gasifying agent in calcium carbonate is 1:0.9~1:1.5, CaCO3It is 1 with the mol ratio of the S in coal dust:1~
2.5:1。
In the above method, described to be used to coal gas of high temperature prepare town gas, detailed process is：Coal gas of high temperature is passed through successively
Enter gas composition adjusting means after heat exchanger heat exchange, deduster dedusting, with vapor reaction generation H2, and control CO and institute
The H of generation2Mol ratio be 1:3；There is methanation reaction acquisition town gas during gaseous mixture is sent into syngas reactor.
In the above method, described that coal gas of high temperature exchanges heat through heat exchanger successively, heat transferring medium is water in the heat exchanger, is changed
The vapor obtained after heat is used as gasifying agent.
In the above method, the chemical products include artificial oil, methyl alcohol, ethylene glycol, oxo-alcohols, dimethyl ether and low-carbon (LC) alkene
The product with CO as primary raw material such as hydrocarbon.
Reaction equation of the present invention is：
CaCO3=CaO+CO2(g)=+110.39kJ/mol (1)
CaO+S+C=CaS+CO(g) ∆H2=-26.85kJ/mol (2)
C+CO2(g)=2CO(g)=+161.81kJ/mol (3)
C+H2O(g)=CO(g)+H2(g)=+135.0kJ/mol (4)
CO(g)+H2O(g)=CO2(g)+H2(g) ∆H5=+39.22kJ/mol (5)
CO(g)+3H2=CH4(g)+ H2O(g) ∆H6=-216.45kJ/mol (6)
CO2(g)+4H2(g)=CH4(g)+2H2O(g) ∆H6=-202.51kJ/mol (7)
∆H1~∆H7Represent the reaction heat of reaction (1) ~ (7).
Coal gasification reaction is strong endothermic reaction, using high temperature liquid iron as heat carrier, the heat for needed for coal gasification reaction is provided
Amount.Molten iron in molten bath also has catalytic action to coal gasification reaction, can improve coal gasification reaction speed, improves gas composition.
Below by taking 50MW paddy phase Peak Loads as an example, coal gas is bathed to electric arc furnaces dual chamber iron according to the conservation of mass and the conservation of energy
Material and the product of generation are calculated needed for the peak load regulation network system and method for change, and method is as follows：
Design conditions：Molten iron electric arc furnaces is ac arc furnace, input powerP a =50MW, electrothermal efficiency is 78%, molten iron electric arc furnaces
Molten iron inlet temperature is 1450 DEG C, and outlet temperature is 1550 DEG C, and gasifying agent is CO2, C and CO in coal gasifier in coal dust2Mole
Than being 1:1, S and CaCO in coal dust3Mol ratio is 1:1.
The coal dust of selection is two kinds of colm and fat coal, and the Industrial Analysis and elementary analysis of two kinds of coals are as shown in table 1：
The Industrial Analysis of the colm of table 1 and fat coal and elementary analysis result
When using fat coal, the energy relationship that the system being made up of coal gasifier, molten iron electric arc furnaces is present is：
Electrical heat input Q1The physical thermal Q that+coal dust is brought into2The physical thermal Q that+gasifying agent is brought into3+CaCO3The physical thermal Q for bringing into4 +
CaSO3The hot Q of chemical reaction generation5The physical thermal Q that=slag is taken out of6The physical thermal Q that+synthesis gas is taken out of7+ coal gasification reaction recepts the caloric
Q8+ CaCO3Decompose caloric receptivity Q9+ other heat loss Q10, wherein Q1~10Unit be KJ/S.
Into the energy of system：
Unit interval electrical heat input Q1：Q1=50×0.78=39；
The physical thermal Q that unit interval coal dust is brought into2：Q2=CcoalmcoalTcoal=1.21mcoal×20（℃）=24.2mcoal；
Wherein, CcoalIt is the specific heat of coal dust, KJ/ (kg DEG C)；mcoalFor the quality of pc of unit time loss is kg/s；Tcoal
It is air themperature, DEG C；
Consumption CO in unit interval2Quality：mCO2=（85.87%mcoal/12-0.49%mcoal/32×2）×44；Wherein mCO2Unit
It is kg/s；
Consumption CaCO in unit interval3Quality：mCaCO3= mcoal× 0.49% × 100/32, wherein mCaCO3Unit is kg/s；
The physical thermal Q that gasifying agent is brought into unit interval3：Q3=CCO2 mCO2TCO2=0.996 mCO2×200（℃）=
627.201mcoal；
Wherein, CCO2It is the specific heat of carbon dioxide, KJ/ (kg DEG C)； TCO2It is carbon dioxide temperature, DEG C；
Consumption CaCO in unit interval3The physical thermal Q for bringing into4：Q4=CCaCO3mCaCO3TCaCO3=0.84mCaCO3×20（℃）=
0.6854mcoal；
Wherein, CCaCO3To consume the specific heat of calcium carbonate, KJ/ (kg DEG C) in the unit time；TCaCO3It is calcium carbonate temperature, DEG C；
The hot Q of CaS chemical reactions generation in unit interval5：
Q5=ms/Ms×ΔH2=0.49%mcoal/0.032×26.85=0.0041mcoal；
Wherein msRepresent the quality of generation CaS in the unit interval, kg/s；MsRepresent the molal weight of CaS, kg/mol；
Leave system capacity：
The lime-ash quality that reaction is produced in unit interval：mslag= mCoal×11.73%=0.1173 mCoal
The physical thermal Q that unit interval lime-ash is taken out of6：Q6=CslagmslagTIron=0.1173mcoal×1450（℃）=156.4782mcoal；
Wherein, CslagIt is the specific heat of slag, KJ/ (kg DEG C)；TIronIt is molten iron temperature, DEG C；
Coal gasification reaction conversion ratio is calculated by 100%, in synthesis gas：
mCO=2×mC×28/12= mCoal×85.87%×56/12=4.0073 mCoal；
Wherein, mCOTo generate CO mass, kg/s in the unit time；mCIt is the quality of pc consumed in the unit time, kg/s；
The physical thermal Q that synthesis gas is taken out of in unit interval7：Q7=CCOmCOTCO=1.16×mCO×1450（℃）=
6740.2225mcoal；
Wherein, CCOIt is the specific heat of CO, KJ/ (kg DEG C)；TCOIt is CO temperature, DEG C；
Consumption coal gasification reaction caloric receptivity Q in unit interval8：
Q8=mc/Mc×ΔH3=(0.8587mcoal/0.012-0.0049mcoal/0.0032)×161.81/1000=
11578.854mcoal；
Wherein mcRepresent the phosphorus content of consumption coal dust in the unit interval, kg/s；McRepresent the molal weight of carbon, kg/mol；
Consumption CaCO in unit interval3Decompose caloric receptivity Q9：
Q9= mCaCO3/M CaCO3×ΔH1=0.49%mcoal/0.012×110.39=45.3168mcoal；
Wherein, mCaCO3Represent the quality of consumption calcium carbonate in the unit interval, kg；M CaCO3Represent the molal weight of calcium carbonate, kg/
mol；
Other heat loss are taken as 5%, i.e. Q10= (Q1+ Q2+ Q3+ Q4+Q5)×5%；
By the conservation of energy, can obtain：Q1+ Q2+ Q3+ Q4+ Q5= Q6+ Q7+ Q8+Q9+Q10；
Finally give：mCoal=2.0167kg/s=7.26t/h
Then with CO2During for gasifying agent, MaterialBalance Computation table is as shown in table 2：
Table 2 is with CO2It is the MaterialBalance Computation table of gasifying agent
Similarly can proper use H2O makees MaterialBalance Computation table during gasifying agent, as shown in table 3：
Table 3 is with H2O is the MaterialBalance Computation table of gasifying agent
Situation when being used to produce town gas to synthesis gas below carries out Material calculation：
Design conditions：Fat coal uses CO2The synthesis gas produced during as gasifying agent；
CO and H in synthesis gas2Gross mass be 29.48t/h, mainly reacted in synthesis gas converting means (5) by CO with
H2Mol ratio be adjusted to 1:3.
Thus, it is supposed that the amount for being passed through vapor is X t/h, then according to CO and H2Required mol ratio, can obtain：
nCO/nH2=(mCO/28-X/18)/(X/18+nCoal-H2)=1/3
Wherein, nco represents the amount of the material that CO is produced in the unit interval, mol/s；NH2 represents the thing that H2 is produced in the unit interval
The amount of matter, mol/s；MCO represents the quality that CO is produced in the unit interval, kg/s；MH2 represents the matter that H2 is produced in the unit interval
Amount, kg/s, ncoal-H2 represents pyrolysis of coal in the unit interval, mol/s.It can thus be concluded that in synthesis gas converting means vapor
Demand X=13.92t/h, so by m in the synthesis gas after conversionCO=7.44t/h, mH2=1.59t/h。
It can thus be concluded that the amount of generation methane is 4.25t/h.
The addition of vapor can similarly be obtained in the case of remaining in gas composition adjusting means and final CH is produced4's
Amount, as shown in table 4：
The mass balance table of the methane of table 4 generation
Beneficial effects of the present invention are：The present invention has strong adaptability, and not by season, territory restriction, peak modulation capacity is strong, response
Hurry up, efficient energy conversion is high, the advantages of environmental protection and economy；Both the peak load regulation network being on the rise is solved the problems, such as, Gao Pin can be produced again
Matter coal gas/synthesis gas, produced coal gas/synthesis gas is gone back in addition to chemical products being carried out directly as industrial chemicals and is synthesized
Can be used to produce town gas, help to alleviate the present situation of China's gas supply shortage.
Brief description of the drawings
Fig. 1 is the structural representation of peak load regulation network system of the invention.
Fig. 2 is that molten iron electric arc furnaces circulates principle with molten iron in coal gasifier in peak load regulation network system of the invention
Figure, wherein H1It is the mouth of pipe distance of upper connecting tube and lower connecting tube in molten iron electric arc furnaces, H2For in molten iron electric arc furnaces molten iron level with
Upper connecting tube mouth of pipe distance, H3It is the mouth of pipe distance of upper connecting tube and lower connecting tube in coal gasifier, H4It is molten iron in coal gasifier
Liquid level and upper connecting tube mouth of pipe distance.
Fig. 3 is the molten iron electric arc furnaces of peak load regulation network system of the invention and a kind of structural representation of coal gasifier.
Fig. 4 is the molten iron electric arc furnaces of peak load regulation network system of the invention and another structural representation of coal gasifier.
In Fig. 2 ~ 4,1- power networks, 2- peak valley modulators, 3- fuses, 4- transformers, 5- transformers, the short nets of 6-, 7- molten irons
Electric arc furnaces, 8- coal gasifiers, 9- heat exchangers, 10- dedusters, 11- gas composition adjusting meanss, 12- syngas reactor,
13- heats electrode, 14- iron baths, connecting tube under 15-, the upper connecting tubes of 16-, 17- substance nozzles, 18- gas vents, 19- slags
Layer, 20- slag exits.
Specific embodiment
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings, described is to solution of the invention
Release rather than restriction.
Fig. 1 provides the structural representation of peak load regulation network system of the invention, and the peak load regulation network system includes that power supply is filled
Put, molten iron electric arc furnaces 7, coal gasifier 8, heat exchanger 9 and deduster 10, the electric supply installation connects the molten iron electric arc furnaces 7, institute
Molten iron electric arc furnaces 7 is stated to be connected with the coal gasifier 8 by upper connecting tube 16 and lower connecting tube 15, and the molten iron electric arc furnaces
The mouth of pipe of upper connecting tube and lower connecting tube is apart from H in 71With the mouth of pipe distance of upper connecting tube and lower connecting tube in the coal gasifier
H3Meet relationship below：H3<0.953H1；The coal gasifier is provided with substance nozzle 17, gas vent 18, slag exit
20, the substance nozzle is vertically installed in the coal gasifier top（As shown in Figure 3）；Or the substance nozzle is arranged on institute
Coal gasifier sidepiece is stated, and the substance nozzle and the angle of the coal gasification furnace sidewall are 10 ° ~ 45 °（As shown in Figure 4）；Institute
Electric supply installation is stated to be connected with power network 1；The heat exchanger 9 connects the coal gasifier 8, and the deduster 10 connects the heat exchanger
9。
The electric supply installation includes the peak valley modulator 2 being connected with power network 1, and the peak valley modulator 2 is sequentially connected fusing
Device 3, transformer 4, transformer 4, short net 6, the short net 6 connect the molten iron electric arc furnaces 7, the heating by heating electrode 13
Electrode is graphite electrode.
The system also can be set town gas processing unit, and the town gas processing unit is adjusted including gas composition
Regulating device 11 and syngas reactor 12, the gas composition adjusting means 11 are used to adjust CO by vapor transformationreation
With H2Mol ratio be 1:3, the syngas reactor 12 is used for the mixing from the gas composition adjusting means out
Gas is completely converted into town gas by methanation reaction, and the gas composition adjusting means 11 connects the deduster 10.
What Fig. 2 provided described in said system molten iron in molten iron electric arc furnaces and coal gasifier circulates schematic diagram.It is molten
Iron arc stove is connected with coal gasifier by upper and lower connecting tube, and upper connecting tube is horizontal tube, and lower connecting tube is tipping tube.Molten iron
Constantly it is heated in molten iron electric arc furnaces, and the heat release in coal gasifier, so as to produce thermograde, cause the close of bath
Degree gradient.Molten iron electric arc furnaces bath temperature is higher than coal gasifier bath temperature.Deposited between molten iron electric arc furnaces and coal gasifier molten bath
Pressure at the mouth of pipe is connected on molten iron electric arc furnaces and is less than on gas burner pressure at the connecting tube mouth of pipe；Connecting tube pipe under molten iron electric arc furnaces
Pressure is higher than pressure at the connecting tube mouth of pipe under coal gasifier at mouthful.
Embodiment 1
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network method of coal gasification, is to use peak load regulation network system as shown in Figure 1, described
System uses molten iron electric arc furnaces and coal gasifier as shown in Figure 3：Molten iron capacity 150t, basal diameter is 2m, is highly 6m, iron
Water depth is 3.1m；The peak load regulation network method is comprised the following steps：
（1）Actual power consumption according to the paddy phase determines peak load regulation network amount, sets power load；
（2）Electric current is introduced molten iron is heated in molten iron electric arc furnaces, wherein molten iron electric arc in-furnace temperature is 1550 DEG C, in coal gasifier
Temperature is 1450 DEG C, and molten iron is formed between molten iron electric arc furnaces and coal gasifier and circulated；
（3）By gasifying agent CO2200 DEG C are preheated to, preheating CO is sprayed into from substance nozzle2The high-quality anthracite powder and calcium carbonate of carrying
Coal gasification reaction is carried out in mixed-powder to coal gasifier, wherein pulverized coal flow is 7.26t/h, CO2Flow is 22.85t/h,
CaCO3Powder is 0.3t/h, coal dust, calcium carbonate and CO2In contained C and CO2In O mol ratio be 1:1, CaCO3With coal dust
In S mol ratio be 1:1, obtain coal gas of high temperature of the temperature more than 1000 DEG C, wherein CO and H2Yield be 26700m3/ h,
562m3/h；The slag produced in coal gasifier is discharged by slag exit；
（4）Coal gas of high temperature is carried out into waste heat recovery by heat exchanger, in heat exchanger, coal gas of high temperature is exchanged heat with water, coal gas
Temperature can be down to 300 DEG C or so, and the coal gas after cooling enters purifying and dedusting in deduster.
Clean gas after dedusting have two kinds of approach：One side clean gas can carry out chemical industry product directly as industrial chemicals
Product synthesize；Another aspect clean gas enter gas composition adjusting means, with vapor reaction generation H2, and control CO and institute
The H of generation2Mol ratio be 1:3；There is methanation reaction during gaseous mixture is sent into syngas reactor（Reaction equation (6), (7)）
Town gas is obtained, methane production amount is 5950m3/h。
In the above method, the chemical products include artificial oil, methyl alcohol, ethylene glycol, oxo-alcohols, dimethyl ether and low-carbon (LC) alkene
The product with CO as primary raw material such as hydrocarbon.
Embodiment 2
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network method of coal gasification, is to use peak load regulation network system as shown in Figure 1, described
Molten iron electric arc furnaces and coal gasifier that system is shown using such as Fig. 4：Molten iron capacity 150t, basal diameter is 2m, is highly 6m, molten iron
Depth is that the angle of substance nozzle and coal gasification furnace sidewall in 3.1m, and coal gasifier is 30 °；The peak load regulation network method bag
Include following steps：
（1）Actual power consumption according to the paddy phase determines peak load regulation network amount, sets power load；
（2）Electric current is introduced molten iron is heated in molten iron electric arc furnaces, wherein molten iron electric arc in-furnace temperature is 1500 DEG C, in coal gasifier
Temperature is 1400 DEG C, and molten iron is formed between molten iron electric arc furnaces and coal gasifier and circulated；
（3）Gasifying agent vapor is preheated to 400 DEG C, from substance nozzle spray into preheating vapor carry high-quality anthracite powder and
Coal gasification reaction is carried out in calcium carbonate mixed-powder to coal gasifier, wherein pulverized coal flow is 8.17t/h, and vapor flow is
10.53t/h, CaCO3Powder is 0.34t/h, and the mol ratio of the O in coal dust and calcium carbonate in contained C and vapor is 1:1,
CaCO3It is 1 with the mol ratio of the S in coal dust:1, obtain coal gas of high temperature of the temperature more than 1000 DEG C, wherein CO and H2Yield
It is 13096m3/ h, 13708m3/h；The slag produced in coal gasifier is discharged by slag exit；
（4）Coal gas of high temperature is carried out into waste heat recovery by heat exchanger, in heat exchanger, coal gas of high temperature is exchanged heat with water, coal gas
Temperature can be down to 300 DEG C or so, and the coal gas after cooling enters purifying and dedusting in deduster.
Clean gas after dedusting have two kinds of approach：One side clean gas can carry out chemical industry product directly as industrial chemicals
Product synthesize；Another aspect clean gas enter gas composition adjusting means, with vapor reaction generation H2, and control CO and institute
The H of generation2Mol ratio be 1:3；There is methanation reaction during gaseous mixture is sent into syngas reactor（Reaction equation (6), (7)）
Town gas is obtained, methane production amount is 6692m3/h。
In the above method, the chemical products include artificial oil, methyl alcohol, ethylene glycol, oxo-alcohols, dimethyl ether and low-carbon (LC) alkene
The product with CO as primary raw material such as hydrocarbon.
Embodiment 3
A kind of electric arc furnaces dual chamber iron bathes the peak load regulation network method of coal gasification, is to use many set peak load regulation network systems as shown in Figure 1,
Molten iron electric arc furnaces and coal gasifier that many set systems are shown using such as Fig. 3：Molten iron capacity 150t, basal diameter is 2m, high
It is 6m to spend, and molten iron depth is 3.1m；The peak load regulation network method is comprised the following steps：
（1）Actual power consumption according to the paddy phase determines peak load regulation network amount, sets power load, and will cover peak load regulation network system simultaneously more
Connection；
（2）Electric current is introduced in parallel system and heats molten iron in each molten iron electric arc furnaces, wherein molten iron electric arc in-furnace temperature is
1500 DEG C, coal gasification in-furnace temperature is 1400 DEG C, and molten iron is formed between molten iron electric arc furnaces and coal gasifier and circulated.
（3）Gasifying agent vapor is preheated to 400 DEG C, the high-quality anthracite that preheating vapor is carried is sprayed into from substance nozzle
Coal gasification reaction is carried out in powder and calcium carbonate mixed-powder to coal gasifier, wherein pulverized coal flow is 8.17t/h, vapor flow
It is 10.53t/h, CaCO3Powder is 0.34t/h, and the mol ratio of the O in coal dust and calcium carbonate in contained C and vapor is 1:
1, CaCO3It is 1 with the mol ratio of the S in coal dust:1, obtain coal gas of high temperature of the temperature more than 1000 DEG C, wherein CO and H2Product
It is 13096m to measure3/ h, 13708m3/h；The slag produced in coal gasifier is discharged by slag exit；
（4）Coal gas of high temperature is carried out into waste heat recovery by heat exchanger, in heat exchanger, coal gas of high temperature is exchanged heat with water, coal gas
Temperature can be down to 300 DEG C or so, and the coal gas after cooling enters purifying and dedusting in deduster.
Clean gas after dedusting have two kinds of approach：One side clean gas can carry out chemical industry product directly as industrial chemicals
Product synthesize；Another aspect clean gas enter gas composition adjusting means, with vapor reaction generation H2, and control CO and institute
The H of generation2Mol ratio be 1:3；There is methanation reaction during gaseous mixture is sent into syngas reactor（Reaction equation (6), (7)）
Town gas is obtained, methane production amount is 6692m3/h。
In the above method, the chemical products include artificial oil, methyl alcohol, ethylene glycol, oxo-alcohols, dimethyl ether and low-carbon (LC) alkene
The product with CO as primary raw material such as hydrocarbon.
Claims (10)
1. a kind of electric arc furnaces dual chamber iron bathes the peak load regulation network system of coal gasification, it is characterised in that including electric supply installation, molten iron electric arc
Stove, coal gasifier, the electric supply installation connect the molten iron electric arc furnaces, and the molten iron electric arc furnaces is by upper connecting tube and lower connection
Pipe is connected with the coal gasifier, and the mouth of pipe of connecting tube and lower connecting tube is gone up in the molten iron electric arc furnaces apart from H1With it is described
The mouth of pipe of upper connecting tube and lower connecting tube is apart from H in coal gasifier3Meet relationship below：H3<0.953H1；The power supply dress
Put and be connected with power network.
2. a kind of electric arc furnaces dual chamber iron according to claim 1 bathes the peak load regulation network system of coal gasification, it is characterised in that institute
Stating system also includes heat exchanger and deduster, and the heat exchanger connects the coal gasifier, and the deduster connects the heat exchange
Device.
3. a kind of electric arc furnaces dual chamber iron according to claim 2 bathes the peak load regulation network system of coal gasification, it is characterised in that institute
Stating electric supply installation includes the peak valley modulator being connected with power network, and the peak valley modulator is sequentially connected fuse, transformer, transformation
Device, short net, the short Netcom cross heating electrode and connect the molten iron electric arc furnaces.
4. a kind of electric arc furnaces dual chamber iron according to claim 3 bathes the peak load regulation network system of coal gasification, it is characterised in that institute
It is graphite electrode to state heating electrode.
5. a kind of electric arc furnaces dual chamber iron according to claim 4 bathes the peak load regulation network system of coal gasification, it is characterised in that institute
State coal gasifier and be provided with substance nozzle, gas vent, slag exit, the substance nozzle is vertically installed in the coal gasification furnace roof
Portion；Or the substance nozzle is arranged on the coal gasifier sidepiece, and the substance nozzle and the coal gasification furnace sidewall
Angle is 10 ° ~ 45 °.
6. a kind of electric arc furnaces dual chamber iron according to claim 2 ~ 5 any one claim bathes the peak load regulation network of coal gasification
System, it is characterised in that the system can also include town gas processing unit, the town gas processing unit includes closing
Into gas component adjusting device and syngas reactor, the gas composition adjusting means is used to be adjusted by vapor transformationreation
Section CO and H2Mol ratio be 1:3, the syngas reactor is used for from the gas composition adjusting means out mixed
Close gas and town gas is completely converted into by methanation reaction, the gas composition adjusting means connects the deduster.
7. a kind of electric arc furnaces dual chamber iron bathes the peak load regulation network method of coal gasification, is using the peak load regulation network system described in claim 6
System, it is characterised in that comprise the following steps：
（1）Actual power consumption according to the paddy phase determines peak load regulation network amount, sets power load, and determine the peak load regulation network system
Quantity；If using 1 set of peak load regulation network system, being directly entered step（2）；If will be many using many set peak load regulation network systems
Step is entered back into after the system parallel connection of set peak load regulation network（2）；
（2）Will electric current introduce heated in molten iron electric arc furnaces molten iron to molten iron electric arc furnaces and coal gasification in-furnace temperature reach 1500 ~
1600 DEG C and stabilization；
（3）Gasifying agent is preheated to 200 ~ 400 DEG C, coal dust and the calcium carbonate mixing that preheating gasifying agent is carried are sprayed into from substance nozzle
Coal gasification reaction is carried out in powder to coal gasifier, coal gas of high temperature is obtained；
（4）Coal gas of high temperature is used to prepare town gas or chemical products.
8. a kind of electric arc furnaces dual chamber iron according to claim 7 bathes the peak load regulation network method of coal gasification, it is characterised in that institute
Gasifying agent is stated for CO2, vapor, richness CO2One or more mixing in flue gas.
9. a kind of electric arc furnaces dual chamber iron according to claim 7 bathes the peak load regulation network method of coal gasification, it is characterised in that institute
Coal dust and calcium carbonate mixed-powder that preheating gasifying agent is carried are stated, in the wherein C and gasifying agent in gasifying agent, coal dust and calcium carbonate
O mol ratio be 1:0.9~1:1.5, CaCO3It is 1 with the mol ratio of the S in coal dust:1~2.5:1.
10. a kind of electric arc furnaces dual chamber iron according to claim 7 bathes the peak load regulation network method of coal gasification, it is characterised in that institute
Stating is used to coal gas of high temperature prepare town gas, and detailed process is：By coal gas of high temperature successively through heat exchanger heat exchange, deduster dedusting
Enter gas composition adjusting means afterwards, with vapor reaction generation H2, and control the CO and H for being generated2Mol ratio be 1:3；
There is methanation reaction acquisition town gas during gaseous mixture is sent into syngas reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216203.XA CN106753573B (en) | 2016-12-26 | 2016-12-26 | A kind of peak load regulation network system and method for electric arc furnaces dual chamber iron bath coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216203.XA CN106753573B (en) | 2016-12-26 | 2016-12-26 | A kind of peak load regulation network system and method for electric arc furnaces dual chamber iron bath coal gasification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106753573A true CN106753573A (en) | 2017-05-31 |
| CN106753573B CN106753573B (en) | 2019-11-26 |
Family
ID=58925828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216203.XA Active CN106753573B (en) | 2016-12-26 | 2016-12-26 | A kind of peak load regulation network system and method for electric arc furnaces dual chamber iron bath coal gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106753573B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042699A1 (en) * | 2019-09-03 | 2021-03-11 | 牛强 | Double-melt bath organic solid waste blowing gasification device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879079Y (en) * | 2006-11-17 | 2007-03-14 | 郑颖杰 | Refined material no-power-cut collecting type high-efficiency AC arc oven |
| CN102518516A (en) * | 2011-12-14 | 2012-06-27 | 华北电力大学 | Integral compressed air energy storage and coal gasification power generation system and integrated power generation method |
-
2016
- 2016-12-26 CN CN201611216203.XA patent/CN106753573B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879079Y (en) * | 2006-11-17 | 2007-03-14 | 郑颖杰 | Refined material no-power-cut collecting type high-efficiency AC arc oven |
| CN102518516A (en) * | 2011-12-14 | 2012-06-27 | 华北电力大学 | Integral compressed air energy storage and coal gasification power generation system and integrated power generation method |
Non-Patent Citations (1)
| Title |
|---|
| 吴国光等: "《煤炭气化工艺学》", 31 January 2013 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021042699A1 (en) * | 2019-09-03 | 2021-03-11 | 牛强 | Double-melt bath organic solid waste blowing gasification device |
| JP2022501446A (en) * | 2019-09-03 | 2022-01-06 | 強 牛 | Organic solid waste blowing gasification device using two melting baths |
| JP7128892B2 (en) | 2019-09-03 | 2022-08-31 | 強 牛 | Organic solid waste injection gasifier using two molten baths |
| US11795407B2 (en) | 2019-09-03 | 2023-10-24 | Qiang Niu | Gasifier for organic solid waste by injection into molten iron and slag bath |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106753573B (en) | 2019-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102225779B1 (en) | Flexibly operable power plant and method for the operation thereof | |
| CN102079685B (en) | Coal gasification process for methane preparation by two stage gasification stove | |
| WO2016142903A1 (en) | Method and system for the manufacture of methane as well as heat and electricity by hydrogasification of biomass | |
| CN106967467A (en) | Utilize coal and electric power effect production and the method and device of storage methane | |
| CN102277200A (en) | Method for preparing coal gas by virtue of pulverized coal grading gasification | |
| CN106753579B (en) | A kind of solid thermal carriers coal gasification electrical thermal storage system and method | |
| CN109181776B (en) | Coal-based poly-generation system and method for integrated fuel cell power generation | |
| CN108048140A (en) | A kind of method and apparatus being pyrolyzed with gasification coupling coproduction oil gas | |
| CN101665724A (en) | Water-coal-slurry gasification method and gasification furnace | |
| CN2608507Y (en) | Two stage pulverized coal circulating fluidized bed gasification device | |
| CN205035331U (en) | A device that is used for brown coal gasification system reducing gas | |
| CN106753573B (en) | A kind of peak load regulation network system and method for electric arc furnaces dual chamber iron bath coal gasification | |
| CN103865600A (en) | Methanation technology | |
| CN103509605A (en) | Method and device using high temperature air and high temperature steam as gasification agents for coal gas production | |
| CN104178234B (en) | Coke-stove gas prepares natural gas and residual-heat utilization method and system with producer gas | |
| CN106160240A (en) | A kind of system and technique stored and discharge electric energy | |
| CN219603618U (en) | Hydrogen electric heater and pure hydrogen shaft furnace reduction system | |
| CN202400853U (en) | Tail gas energy-saving system for polycrystalline silicon reducing furnace | |
| CN106786619B (en) | A kind of peak load regulation network system and method for induction furnace iron bath coal gasification | |
| CN203513601U (en) | Biomass gasification and pyrolysis reactor | |
| CN102277196B (en) | Method for producing and synthetizing ammonia and methyl alcohol raw material gas by virtue of fixed bed intermittence type oxygenation nature gas | |
| CN204058508U (en) | Conversion unit, prepare the system of gas-based shaft kiln reducing gas | |
| CN206408181U (en) | A kind of system of coal hydrogenation gasification coupling calcium carbide production | |
| CN107164594A (en) | A kind of BGL gasifying gas produces the system and method for DRI through dual turn over metaplasia | |
| CN208671701U (en) | A kind of industrial high temperature solid granule residual neat recovering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |