CN1869165B - Bifuel reforming multifunctional energy system and its method - Google Patents
Bifuel reforming multifunctional energy system and its method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002407 reforming Methods 0.000 title claims abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 146
- 238000004519 manufacturing process Methods 0.000 claims abstract description 80
- 239000003245 coal Substances 0.000 claims abstract description 70
- 239000000126 substance Substances 0.000 claims abstract description 70
- 239000007789 gas Substances 0.000 claims abstract description 69
- 239000003345 natural gas Substances 0.000 claims abstract description 62
- 239000000446 fuel Substances 0.000 claims abstract description 61
- 238000010248 power generation Methods 0.000 claims abstract description 46
- 238000006057 reforming reaction Methods 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 23
- 239000002918 waste heat Substances 0.000 claims abstract description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 120
- 235000009508 confectionery Nutrition 0.000 claims description 52
- 229910052739 hydrogen Inorganic materials 0.000 claims description 33
- 239000001257 hydrogen Substances 0.000 claims description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 13
- 150000002431 hydrogen Chemical class 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000000376 reactant Substances 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 235000011089 carbon dioxide Nutrition 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000019738 Limestone Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 239000006028 limestone Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract 3
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 9
- 238000000629 steam reforming Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Hydrogen, Water And Hydrids (AREA)
Abstract
The invention relates to a multifunction energy system and the method used natural gas and coal dual fuel as material to produce chemical product and electric power. It belongs to fuel energy technique field. The system is made up of dual fuel reforming reaction, waste heat recovery, chemical engineering production, and electric power generation subsystems. The processes of the method are that the duel fuel reforming subsystem contains a new type synthetic gas manufacturing method that the coal replaces the natural gas to make it join reforming reaction fully; material gas absorbs the discharged high temperature heat. Compared with the routine system, the dual fuel multifunction energy system can save natural gas 10-20%. Thus it can reduce cost and has better industrialization prospect.
Description
Technical field
The present invention relates to combustion energy technical field, particularly a kind of is the multifunctional energy resource system and the method for raw material while production chemical product and electric power with Sweet natural gas and coal double fuel.
Technical background
Fossil energy is the main energy derive of human society, and fossil energy is non-renewable, and reserves are limited, and is therefore significant to efficiently utilizing of fossil energy before finding substitute energy.Fossil energy is mainly used in Chemicals production and electrical production at present.
Known most of Chemicals production system and electric power generation system are separate, develop comparative maturity separately, but in view of two system's own characteristics, all exist some that problem to be solved is arranged.Chemical producing system lays particular emphasis on the output of Chemicals and productive rate etc., in the system can cascade utilization do not cause enough attention, it is unreasonable to cause Chemicals production process energy to utilize, the energy consumption of unit Chemicals is too high.Electric power generation system lays particular emphasis on the cascade utilization of energy in the system, but does not consider the reasonable utilization of fuel chemical energy, causes the process combustion capacity for work to be lost in a large number, and generating efficiency is low.
Present chemical producing system or power generation system all consume single fossil oil, and for example Chang Gui Chemicals production system is divided into coal-based and the Sweet natural gas base, and conventional power generation usage factory is divided into coal-burning power plant and combined-cycle power plant.Production is during with a kind of Chemicals or electric power, owing to adopt different material, and energy consumption of unit product widely different.Coal-based methanol production system for example, ton methyl alcohol are can loss-rate Sweet natural gas base methanol production system high by about 30%, and coal-burning power plant's generating efficiency is lower 15-20 percentage point than combined cycle.These differences come from the different of coal and Sweet natural gas character, contain toxic substances such as a large amount of ash contents and sulphur in the coal, and Sweet natural gas is the fossil energy of cleaning.If coal and Sweet natural gas comprehensive utilization can be remedied both sides' deficiency, can significantly improve the energy utilization efficiency of chemical system and power generation system.But present chemical industry and power system are not considered the difference of fossil oil in process of production, with their comprehensive utilization.
Coal-based polygenerations systeme be a kind of be raw material with the coal, the energy resource system of production chemical product and electric power simultaneously.This system has considered the integration of Chemical Manufacture and electrical production, but still has some drawbacks.Coal-based polygenerations systeme complexity comprises air separation plant, coal gasifier, and chemical producing system and power generation system etc. are invested highly, and wherein air separation plant and coal gasifier account for the 30%-40% of gross investment.
Multifunctional energy resource system is the energy resource system of a kind of multipotency source input fecund product output, it integrates Chemicals production system and power generation system, remedy two system's deficiencies, considered the difference of fossil oil character simultaneously, fossil oil (Sweet natural gas) and coal comprehensive utilization with cleaning, system architecture is comparatively simple, has saved air separation plant and coal gasifier, and investment greatly reduces.
Summary of the invention
The objective of the invention is to: at current chemical producing system and power generation system drawback and two kinds of fossil energies of coal/Sweet natural gas characteristics separately separately, it is the multifunctional energy resource system that raw material is produced liquid fuel or Chemicals and electric power simultaneously with Sweet natural gas and coal that the present invention proposes a kind of.
Technical scheme of the present invention and systems approach are as follows:
Provided by the invention is the multifunctional energy resource system of raw material while production chemical product and electric power with Sweet natural gas and coal, mainly comprise following 4 subsystems: double fuel reforming reaction subsystem (1), waste heat recovery subsystem (2), Chemical Manufacture subsystem (3) and power generation sub-system (4).
The multifunctional energy resource system of production chemical product and electric power when being raw material provided by the invention with Sweet natural gas and coal,
Coal and Sweet natural gas fully utilize in double fuel is reformed subsystem (1), produce the synthetic gas of high-quality cleaning, high-temperature flue gas and synthetic gas from double fuel reformation subsystem enter waste heat recovery subsystem (2) heat release, and production high pressure steam is simultaneously supplied with the power sub-system generating.Cooled synthetic gas is sent in the Chemical Manufacture subsystem (3), and the production chemical product is sent into part or all of unreacting gas in the power generation sub-system (4), as the fuel of power generation sub-system then.Power generation sub-system can be extracted the part middle pressure steam out and be supplied with double fuel reformation subsystem, as the reactant of double fuel reforming reaction.
Double fuel reformation subsystem provided by the invention (1),
Fig. 2 mixes the back from steam (6) Sweet natural gas (5) of power generation sub-system (4) and forms unstripped gas, enters preheater (18) by flue gas heating to 500 ℃.Unstripped gas enters reforming reactor (19) then, and reforming reactor is made up of reforming reaction pipe (32) and burner hearth, has the required catalyzer of methane vapor reforming reaction in the reaction tubes, and methane/steam reforming reaction takes place in reaction tubes unstripped gas.
Chemicals provided by the invention are produced subsystem can produce multiple Chemicals, can dispose the system of a certain Chemicals according to demand, integrated different multifunctional energy resource system.For example integrated methyl alcohol and electric power multifunction system, dme and electric power multifunction system, hydrogen and electric power multifunction system or the like.Also can produce two or more Chemicals simultaneously, for example hydrogen, methyl alcohol and electric power multifunction system.
Power generation sub-system provided by the invention is an association circulating power generation system, and different with conventional association circulating power generation system is that power generation sub-system consumption is off-gas or the unreacting gas that Chemicals are produced subsystem in multifunction system.Power generation sub-system also receives the high pressure superheated steam of producing from the waste heat recovery subsystem, enters end round-robin steam turbine work done, simultaneously, therefrom presses steam turbine to extract the part middle pressure steam out, participates in methane reforming reaction.
The invention has the beneficial effects as follows that the characteristics different with Sweet natural gas according to coal are carried out the integrated complementary utilization with coal and Sweet natural gas, when making full use of clean energy (Sweet natural gas is all as industrial chemicals), rationally utilize coal; Chemical process and power production process are combined, overcome each other that energy utilizes irrational shortcoming, the multifunctional energy resource system that the present invention proposes is compared with conventional system, saves the Sweet natural gas of 10-20%.
Technical scheme
A kind of is the multifunctional energy resource system of raw material with Sweet natural gas and coal, by double fuel reforming reaction subsystem (1), waste heat recovery subsystem (2), Chemical Manufacture subsystem (3) and power generation sub-system (4) organic combination form, this system fully utilizes coal and Sweet natural gas in double fuel reformation subsystem, produce liquid fuel/Chemicals and electric power, double fuel reforming reaction subsystem (1) is connected in waste heat recovery subsystem (2), and waste heat recovery subsystem (2) is connected in Chemical Manufacture subsystem (3) and power generation sub-system (4).
A kind of is the multifunctional energy resource system method of raw material with Sweet natural gas and coal, double fuel reformation subsystem comprises a kind of novel synthesis gas preparation method, substitute fuel natural gas in traditional methane vapor reforming process with coal, make Sweet natural gas full entry reforming reaction, coal and air are in reformer burner hearth internal combustion, unstripped gas absorbs the heat of high temperature that coal combustion is emitted in reaction tubes, reforming reaction takes place, make synthetic gas, in addition, the production method that also comprises waste heat recovery subsystem, Chemical Manufacture subsystem and power generation sub-system.
Double fuel reformation subsystem, coal burn in burner hearth can adopt multiple mode, comprises fixed bed; fluidized-bed and fluid injected bed; consider that the environment protection factor can adopt the fluidized-bed combustion mode, in body of heater, spray into lime or limestone powder, desulfurization in combustion processes.
Double fuel reformation subsystem, the reactant of methane reforming reaction also can be carbonic acid gas or carbonic acid gas and mixture of steam, and the ratio of water vapor and carbonic acid gas and methane can change, and regulates gas composition easily, is beneficial to the synthetic of Chemicals.
The waste heat recovery subsystem reclaims double fuel synthetic gas sensible heat and the obvious heat of smoke behind the coal combustion that subsystem makes of reforming, and is used for preheating reforming reactants and production high pressure superheated steam and supplies with power generation sub-system, after the synthetic gas cooling condensed water is wherein reclaimed.
The Chemical Manufacture subsystem can be the methanol production system, and synthetic gas mixes with circulation gas through after the compressor compresses, and then be compressed to the methyl alcohol synthesis pressure, enter synthetic tower synthesizing methanol product, methyl alcohol separating unit is again separated, off-gas supply capability subsystem.
The methanol production subsystem, the gas volume of supply capability system can be regulated, and is not limited to the off-gas in traditional Chemical Manufacture, also can comprise unreacting gas.
The Chemical Manufacture subsystem can be a hydrogen production system, and synthetic gas makes CO conversion city H in the synthetic gas through two sections conversion
2, and then pass through hydrogen separation device Hydrogen Separation is come out, remaining gas is supplied with power sub-system and is acted as a fuel.
Hydrogen gas production subsystem, two sections conversion processes can be simplified to one section or save conversion process, and the hydrogen separation device hydrogen recovery rate also can change.
The Chemical Manufacture subsystem is produced methyl alcohol and the hydrogen in embodiment and can also be produced other liquid fuels or Chemicals.
Power generation sub-system is an association circulating power generation system, gas turbine is a fuel with the unreacting gas of Chemical Manufacture subsystem, the working medium of steam turbine derives from the high pressure superheated steam of waste heat boiler and waste heat recovery subsystem, and the part middle pressure steam is extracted out from turbine and supplied with double fuel reformation subsystem as reactant.
Description of drawings
Accompanying drawing 1. the present invention are the multifunctional energy resource system schematic flow sheet of raw material while production chemical product and electric power with Sweet natural gas and coal;
Accompanying drawing 2. double fuel reformation subsystem schematic flow sheets of the present invention;
Accompanying drawing 3. methyl alcohol synthon system flow synoptic diagram of the present invention;
Accompanying drawing 4. the present invention hydrogen manufacturing subsystem schematic flow sheet.
Double fuel reformation subsystem 1 waste heat recovery subsystem 2 Chemical Manufacture subsystems 3
Power generation sub-system 4 Sweet natural gases 5 water vapors 6
Reformate 7 unstripped gass 8 Chemicals 9
Coal 10 high-temperature flue gas 11 low-temperature flue gas 12
Water 13 water vapors 14 electricity 15
Unreacting gas 16 low temperature combustion gas 17 preheaters 18
Reforming reactor 19 virgin gas compressors 20 gas mixtures compression machine 21
Interchanger 22 synthetic towers 23 refined units 24
Circulation gas 25 gas mixtures 26 methyl alcohol 27
28 2 sections shift-converters of one section shift-converter, 29 hydrogen gas segregators 30
Hydrogen 31 reforming reaction pipes 32
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
See also accompanying drawing 1, provided by the invention is the multifunctional energy resource system of raw material with coal and Sweet natural gas, mainly by double fuel reformation subsystem (1), and waste heat recovery subsystem (2), Chemical Manufacture subsystem (3) and power generation sub-system (4) are formed.Sweet natural gas (5) and (be generally 1: 3-1: 3.5) mix, enter in the reaction tubes of double fuel reforming reaction subsystem (1) catalyst surface generation reforming reaction in pipe according to a certain percentage from the water vapor (6) of power generation sub-system; Meanwhile, coal (10) also enters reforming reactor, and with air generation combustion reactions, the heat of high temperature that burning is emitted is supplied with reforming reaction outside reaction tubes.Flue gas (11) behind reformate (7) and the coal combustion enters waste heat recovery subsystem (2), and heating high-pressure water (13) produces high pressure superheated steam (14) supply power generation sub-system (4) and is used; Low-temperature flue gas after the heat release (12) directly is discharged in the environment, and reformate enters Chemical Manufacture subsystem (3).Chemical Manufacture subsystem production chemical product (9) gives off part unreacting gas (16) simultaneously, and these unreacting gas enter the fuel of power generation sub-system (4) as combined cycle in multifunction system, and the flue gas after the work done (17) is discharged in the environment.Power generation sub-system is also extracted part steam (6) out as reforming reactants in steam turbine except that output power (15).Double fuel reforming reaction subsystem (1) is connected in waste heat recovery subsystem (2), and waste heat recovery subsystem (2) is connected in Chemical Manufacture subsystem (3) and power generation sub-system (4).
Fig. 2 is a double fuel reformation subsystem schema of the present invention.Mix the back from steam (6) Sweet natural gas (5) of power generation sub-system (4) and form unstripped gas, enter preheater (18) by flue gas heating to 500 ℃.Unstripped gas enters reforming reactor (19) then, reforming reactor is made up of reforming reaction pipe (32) and burner hearth, have the required catalyzer of methane vapor reforming reaction in the reaction tubes, methane/steam reforming reaction takes place in unstripped gas in reaction tubes, and its reaction equation is as follows:
CH
4+H
2O→3H
2+CO
CO+H
2O→CO
2+H
2
Methane/steam reforming reaction is a strong endothermic reaction, and the needed reaction heat of reforming reaction is by the acquisition of burning in the burner hearth of reforming reactor (19) of coal and AIR MIXTURES.The high-temperature flue gas that coal combustion produces enters preheater (18) heating raw gas subsequently, then in warm flue gas enter pre-recovery of heat subsystem (2).The burning of coal in burner hearth can be adopted multiple mode, and for example in order to reduce the pollution of coal combustion to air, the burning of coal in burner hearth can be adopted the combustion method of fluidized-bed, effectively reduces NOx in the flue gas and the content of SOx.
Fig. 3 is a methanol production subsystem process flow sheet of the present invention.Boost through compressor (20) and, pass through compressor (21) again and further be compressed to the methyl alcohol synthesis pressure by the synthetic gas (8) that derives from the waste heat recovery subsystem shown in Figure 1 with after circulation gas (25) mixes.High pressure feed enters methyl alcohol synthetic reactor (23) through the regenerator preheating, carries out methyl alcohol and synthesizes.Synthetic producing enters separating unit methyl alcohol separated after the regenerator heat release, and makes with extra care and obtain methanol product (27).Part unreacting gas (25) continues to participate in building-up reactions as circulation gas, and another part gas (16) outputs to power generation sub-system (4), acts as a fuel.
Schema when Fig. 4 is used for hydrogen for the present invention.By the synthetic gas (8) that derives from the waste heat recovery subsystem shown in Figure 1, behind one section shift-converter (28) and two sections shift-converters (29), CO in the synthetic gas is changed into CO
2, while generating portion hydrogen.The reacted synthetic gas of Shift enters hydrogen separation unit (30), makes hydrogen (31), and the residual gas main component is a carbonic acid gas, and methane and carbon monoxide etc. are supplied with power generation sub-system and acted as a fuel.
Of the present invention is the multifunctional energy resource system of raw material with Sweet natural gas and coal, compare with the energy resource system of a kind of raw material of existing simple usefulness, have following characteristics: (1) utilizes cheap coal, substitute in traditional Sweet natural gas steam reforming technology and account for Sweet natural gas total burn-off 1/3 and the higher fuel natural gas of price, reduce the production cost of synthetic gas; (2) with chemical system and therrmodynamic system organic integration, remedy the energy that exists when two systems produce separately and utilized unreasonable problem, capacity usage ratio is improved, save the energy and reduced production cost.
In sum,, rely on the price advantage of raw material, adopt double fuel multifunctional energy resource system of the present invention, the production cost of Chemicals and electric power is reduced significantly, practical prospect is arranged very much in the place of production of coal and natural gas source.
Embodiment:
Embodiment 1 is double fuel methyl alcohol and electric power multifunctional energy resource system, both has been double fuel methyl alcohol and electric power multifunctional energy resource system schema with Chemical Manufacture subsystem among methanol production subsystem replacement Fig. 1 of Fig. 3.The operational condition of double fuel reformation subprocess is: the vapourizing furnace exit gas temperature is 920 ℃; The reforming reaction temperature is 850 ℃, and reforming reaction pressure is 2.3MPa, CH
4/ H
2O is 3: 1, and the following Sweet natural gas and the synthetic gas parameter of certain balance condition see Table 1.Table 2 is reformer outlet gas composition, and table 3 is produced the energy consumption and the generated energy of ton methanol product for the double fuel multifunctional energy resource system.Double fuel system methyl alcohol electric power multifunction system consumes Sweet natural gas 27GJ as can be seen from Table 3, and coal 17.2GJ, generated energy are 1703.8kWh.In order to disclose the advantage of multifunction system, the energy consumption parameter during with minute methyl alcohol of product system production same amount and electric power also one is listed in the table.Divide the product generating to obtain, when coal-fired steam power plant generating efficiency is 38%, need consume the coal of 16.1GJ by coal-fired steam power plant; Contrast multifunction system consumption of coal, the residue coal is used for producing methyl alcohol, and the energy consumption of coal-based methanol production is a 45.8GJ/t methyl alcohol, so residue coal production quantity of methyl alcohol is 0.02t; 0.98t is by gas production for contrast multifunction system residue quantity of methyl alcohol, should consume Sweet natural gas 31.4GJ.When multifunction system and the methyl alcohol and the electric power that divide the product system to produce same amount, the same amount coal of consumption, multifunction system score product system consumes Sweet natural gas 14% less.As seen multifunction system is obviously saved natural consumption, and the production cost of Chemicals and electric power is greatly reduced.
Embodiment 2 is double fuel hydrogen and electric power multifunctional energy resource system.With Chemical Manufacture subsystem among hydrogen gas production subsystem replacement Fig. 1 of Fig. 4 both had been double fuel hydrogen and electric power multifunctional energy resource system schema.The operational condition of double fuel reformation subsystem is identical with embodiment 1 with gas composition, referring to table 1 and 2.Table 4 is produced the energy consumption and the generated energy of 100kmol hydrogen product for the double fuel multifunctional energy resource system.Double fuel hydrogen and electric power multifunction system consume Sweet natural gas 32.9GJ as can be seen from Table 4, and coal 21.0GJ, generated energy are 3089.8kWh.In order to disclose the advantage of multifunction system, the energy consumption parameter during with minute methyl alcohol of product system production same amount and electric power also one is listed in the table.Divide the product generating to be obtained by coal-fired Rankine cycle and combined cycle, consuming identical coal power generation amount when the efficient of Rankine cycle is 38% is 2216.7kWh; Contrast multifunction system generated energy, dump power is provided by combined cycle, when combined cycle generation efficient is 54%, needs to consume Sweet natural gas 5.8GJ; Hydrogen is made by Sweet natural gas, and 100kmol hydrogen need consume Sweet natural gas 30.2GJ.When multifunction system and the hydrogen and the electric power that divide the product system to produce same amount, the same amount coal of consumption, multifunction system score product system consumes Sweet natural gas 9.6% less.Hydrogen and electric power multifunction system energy-saving effect are equally very obvious.
Table 1 Sweet natural gas and synthetic gas state parameter
| The logistics sequence number | Pressure (Mpa) | Temperature (℃) | Flow (kg/s) |
| 5 Sweet natural gases | 2.3 | 25 | 16.046 |
| 6 water vapors | 2.3 | 25 | 54.046 |
| The logistics sequence number | Pressure (Mpa) | Temperature (℃) | Flow (kg/s) |
| 7 synthetic gas | 2.1 | 850 | 70.089 |
Table 2 reforming reactor outlet gas composition
| Project | H 2 | CO | CO 2 | H 2O | CH 4 |
| Molar flow (kmol/h) | 5447 | 1013 | 602 | 3537 | 302 |
| Molar percentage (%) | 50.6 | 9.5 | 5.5 | 31.9 | 2.4 |
Table 3 multifunction system is produced the energy consumption and the generated energy of ton methanol product
| Project | Multi-functional | Coal power generation | Coal-based methanol | Sweet natural gas base methyl alcohol | Divide to produce and add up to |
| Sweet natural gas consumption/GJ | 27.0 | 0 | 31.4 | 31.4 | |
| Consumption of coal/GJ disappears | 17.2 | 16.1 | 1.1 | 0 | 17.2 |
| Production quantity of methyl alcohol/t | 1 | 0 | 0.02 | 0.98 | 1 |
| Generated energy/kWh | 1703.8 | 1703.8 | 0 | 0 | 1703.8 |
Table 4 multifunction system system 100kmol Hydrogen Energy consumption
| Project | Multi-functional | Coal power generation | Natural gas power | Natural gas hydrogen preparation | Divide to produce and add up to |
| Sweet natural gas consumption/GJ | 32.9 | 0 | 5.8 | 30.2 | 36.0 |
| Consumption of coal/GJ disappears | 21.0 | 21.0 | 0 | 0 | 21.0 |
| Project | Multi-functional | Coal power generation | Natural gas power | Natural gas hydrogen preparation | Divide to produce and add up to |
| Hydrogen output/kmol | 100 | 0 | 0 | 100 | 100 |
| Generated energy/kWh | 3089.8 | 2216.7 | 873.2 | 0 | 3089.8 |
Claims (8)
1. one kind is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, it is characterized in that: by double fuel reformation subsystem, the waste heat recovery subsystem, Chemical Manufacture subsystem and power generation sub-system are formed, Sweet natural gas and from the water vapor of power generation sub-system by 1: 3-1: 3.5 mixed, enter in the reaction tubes of double fuel reforming reaction subsystem catalyst surface generation reforming reaction in pipe; Meanwhile, coal also enters reforming reactor, outside reaction tubes with air generation combustion reactions, the heat of high temperature that burning is emitted is supplied with reforming reaction, flue gas behind reformate and the coal combustion enters the waste heat recovery subsystem, heating high-pressure water produces high pressure superheated steam supply power generation sub-system and is used; Low-temperature flue gas after the heat release directly is discharged in the environment, reformate enters the Chemical Manufacture subsystem, Chemical Manufacture subsystem production chemical product, give off speed venting or unreacting gas simultaneously, speed to exit or unreacting gas enters the fuel of power generation sub-system as combined cycle, fume emission after the work done is in environment, and power generation sub-system is also extracted part steam out as reforming reactants in steam turbine except that output power.
2. described according to claim 1 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, it is characterized in that: in double fuel reformation subsystem, coal burns in burner hearth and adopts fixed bed, fluidized-bed or fluid injected bed combustion system, when adopting the fluidized-bed combustion mode, in body of heater, spray into lime or limestone powder, with desulfurization in combustion processes.
3. according to claim 1 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, and it is characterized in that: in double fuel reformation subsystem, the reactant of methane reforming reaction is the mixture of water vapor or water vapour and carbonic acid gas.
4. according to claim 1 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, it is characterized in that: the Chemical Manufacture subsystem is the methanol production system, synthetic gas mixes with circulation gas through after the compressor compresses, and then be compressed to the methyl alcohol synthesis pressure, enter synthetic tower synthesizing methanol product, methyl alcohol is separated at separating unit, and off-gas supply capability subsystem acts as a fuel.
5. according to claim 4 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal,, it is characterized in that: the circulating flow rate that enters synthetic tower can be adjusted, and correspondingly the gaseous fuel quantity of supply capability system changes.
6. according to claim 1 is the raw material method of production chemical product and electric power simultaneously with Sweet natural gas and coal, and it is characterized in that: the Chemical Manufacture subsystem is a hydrogen production system, and synthetic gas makes through two sections conversion that CO changes into H in the synthetic gas
2, and then pass through hydrogen separation device Hydrogen Separation is come out, remaining gas is supplied with power sub-system and is acted as a fuel.
7. according to claim 1 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, it is characterized in that: the Chemical Manufacture subsystem is the hydrogen gas production subsystem, synthetic gas is through one section conversion process or save conversion process, and then the process hydrogen separation device comes out Hydrogen Separation, remaining gas is supplied with power sub-system and is acted as a fuel, the hydrogen separation device hydrogen recovery rate also can change, and the fuel quantity of corresponding supply power sub-system changes.
8. according to claim 1 is the method for raw material while production chemical product and electric power with Sweet natural gas and coal, it is characterized in that: power generation sub-system is an association circulating power generation system, gas turbine is a fuel with the unreacting gas of Chemical Manufacture subsystem, the working medium of steam turbine derives from the high pressure superheated steam of waste heat boiler and waste heat recovery subsystem, and the part middle pressure steam is extracted out from turbine and supplied with double fuel reformation subsystem as reactant.
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| CN101285004B (en) * | 2007-04-11 | 2010-12-15 | 中国科学院工程热物理研究所 | Multifunctional energy resource system |
| CN101191084B (en) * | 2007-11-16 | 2010-12-08 | 清华大学 | Multi-coproduction energy method and system by using coal gasification heat with methane reforming manner |
| CN101824332B (en) * | 2010-06-02 | 2013-10-09 | 华南再生资源（中山）有限公司 | Production equipment for comprehensively utilizing renewable energy resources of waste and old plastics, tires and waste engine oil |
| DE102012110520B4 (en) * | 2012-11-02 | 2019-01-31 | L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Process for the production of dry synthetic natural gas (SNG) |
| EP3018094A1 (en) | 2014-11-06 | 2016-05-11 | Casale SA | Process for producing a synthesis gas |
| CN108863702B (en) * | 2017-05-10 | 2021-01-05 | 中石油吉林化工工程有限公司 | Heat recovery system and method for isobutane dehydrogenation process |
| CN108979766A (en) * | 2018-07-31 | 2018-12-11 | 樊福生 | 0 discharge chimney-free Turbo-generator Set electrification technique design method |
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