CN202047043U - Composite external heating two-section gas furnace with fixed bed - Google Patents
Composite external heating two-section gas furnace with fixed bed Download PDFInfo
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- CN202047043U CN202047043U CN2011201007866U CN201120100786U CN202047043U CN 202047043 U CN202047043 U CN 202047043U CN 2011201007866 U CN2011201007866 U CN 2011201007866U CN 201120100786 U CN201120100786 U CN 201120100786U CN 202047043 U CN202047043 U CN 202047043U
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Abstract
The utility model discloses a composite external heating two-section gas furnace with a fixed bed, wherein more than two kinds of external heating indirect dry distillation are adopted for feedstock coal at the dry distillation section of the two-section gas furnace, so that coal gas at a gasification section and coal gas at the dry distillation section can be efficiently utilized by adopting different purification measures, and a continuous gas producing method and a circulating gas producing method can be adopted; and different oxidants and gasification agents can be adopted to produce chemically synthesized feed gas with different component requirements, and simultaneously, tar with higher economic value in raw material no-anthracite is extracted. The composite external heating two-section gas furnace with the fixed bed has the advantages of low investment, simplicity in operation, no pollution, high comprehensive coal gasification efficiency and low manufacture cost, and is applicable to modification on gas making furnaces with fixed beds, which are newly constructed or are widely used currently.
Description
Technical field
The utility model belongs to gasification and produces chemical industry synthetic raw gas field, is specifically related to a kind of compound outer thermosetting fixed bed two stage type gas stove.
Background technology
At present in China's synthetic ammonia, the methanol production, with coke, hard coal or anthracite briquette be raw material fixed bed intermittently gas furnace occupy quite great proportion, because this stove is a primary reformer, so it can not directly use the bituminous coal of high-volatile to be raw material, otherwise can produce the high and comparatively serious problems such as tar-acids water pollution of feed gas methane.Because anthracitic price is more and more higher, this producer that produces synthetic ammonia, methyl alcohol also for fixed bed gas furnace at intermittence brings very big cost pressure, presses for and adopts suitable non-smokeless coal gasification technology to reduce cost.
To non-hard coal system synthetic raw gas technology, be divided into three kinds of methods by the kinestate of coal: fluidized bed coal gasification method, air-flow bed coal-gasification method, fixed bed (moving-bed) coal gasification method.
Representational in the fluidized bed coal gasification method is that grace stove, ash melt poly-stove etc.Fluidized bed coal gasification method be because its service temperature can not surpass the grey melting point of feed coal, so carbonic acid gas and methane are higher in its unstripped gas that makes, effective pneumatolytic part is lower, and this method can not be extracted the higher tar light oil of economic worth in the feed coal.
Representational in the air-flow bed coal-gasification method is Texaco coal water slurry stove, Shell powder coal gasification furnace, GSP powder coal gasification furnace, HTL powder coal gasification furnace etc.The air-flow bed coal-gasification method is because its service temperature height, so the effective pneumatolytic part of its unstripped gas that makes is high, but this method construction period is long, the big operation of investment financial expense height, nozzle high temperature ablation serious wear, start-stop car and maintenance cost height, and this method can not be extracted the higher tar light oil of economic worth in the feed coal.
Fluidized bed coal gasification method and air-flow bed coal-gasification method also have a common deficiency to be: the gas temperature that makes is more than 1000 ℃, and the gas heat of high-temperature can only adopt the form that produces steam to be reclaimed like this, has reduced system air cooling coal gas efficient.Air-flow bed coal-gasification is because temperature of reaction is higher, though high temperature is beneficial to gasification reaction, effectively pneumatolytic divides, and the gas heat waste is more serious.For example the service temperature of Texaco coal water slurry stove, Shell powder coal gasification furnace, GSP powder coal gasification furnace, HT-L powder coal gasification furnace is all more than 1300 ℃, even up to more than 1600 ℃, generally can only adopt Quench and waste heat boiler to reclaim the heat flow process to a few family of such pyritous gas heat air-flow bed coal-gasification method, reduce cold gas efficiency.To this, the technology unit that has adopts two-part air-flow bed coal-gasification method to reclaim the coal gas of high temperature sensible heat, for example coal-based two segments combined gasifying process of Chinese patent (patent No. ZL00111437.9) and device thereof, Chinese patent (patent No. ZL01131780.9) double-section dry coal powder gasifying furnace, but the gas temperature after two sections still reaches about 1000 ℃, the gas temperature that gets with the fluidized bed coal vaporizing system is suitable, and the utilization of gas heat does not still have static bed coal gasification good.In addition, what air-flow bed coal-gasification adopted is furnace wall dross and fusion deslagging, and this raw material coal ash melting point that just requires to gasify can not be too high, and slag viscosity can not be excessive, otherwise need to add the material that reduces grey melting point in the feed coal, and this also can reduce cold gas efficiency.
It is Lurgi (Shandong is strange) pressurized-gasification furnace, BGL stove, two stage type gas stove etc. that non-hard coal adopts representational in the static bed coal gasification method.
Lurgi (Shandong is strange) pressurized-gasification furnace is to operate under 2.0～3.0MPa pressure, with the small coal is raw material, steam and oxygen continuous blast, the gasification bed divides drying, destructive distillation, reduction, oxidation and ash bed from top to bottom, product coal gas is through recovery of heat and oil removing, contain have an appointment 8%～12% methane and unsaturated hydrocarbons, the suitable town gas of doing.Raw gas can be made synthetic gas after hydro carbons separation and steam reforming.The maximum user of Lurgi stove is town gas and synthetic hydrocarbon (synthetic oil), also has the large size city gas fitting in China.Do not have the device of large-scale Lurgi stove per unit area yield synthetic ammonia abroad, major cause is except that the environmental protection problem, and technical process is long, will increase the subzero fractionation methane and the hydrocarbon conversion especially.China is once with brown coal system ammonia. and adopt first-generation φ 2800 lurgi gasifiers, produce normal. but environmental issue is more.φ 3800 lurgi gasifiers are introduced in the back, produce synthetic ammonia with meager coal, wash the high methane gas of separating by nitrogen in the explained hereafter flow process and return after one section steam reforming and CO conversion and take off CO
2Main flow, flow process complexity, energy consumption height.
BGL stove (gasification of fixed bed slag tap) working pressure 2.5～3.0MPa, gasification temperature has surpassed the lime-ash yield temperature at 1400～1600 ℃, and the lime-ash form that is in a liquid state is discharged.Furnace structure is simpler than traditional Lurgi stove. cancelled the rotation fire grate.Because high-temperature operation, steam decomposition rate is higher, and steam consumption significantly reduces, gasification intensity improves 3 to 4 times than dry ash Lurgi stove, and caloric power of gas improves 1/4th approximately, but still has a great deal of methane and other hydro carbons in the coal gas, suit to make fuel gas, should not make the chemical industry synthetic raw gas.
The common drawback of Lurgi stove and BGL stove is: one, destructive distillation and gasification are carried out in primary reformer, though dryer section retort section feed coal can reclaim the gasification section gas heat that gasification section produces, but owing to be that direct gas-solid heat transmission is reclaimed, so being rich in the destructive distillation gas mixing of tar, undecomposed steam of gasification section and the dried distilled of retort section can produce more phenol water, the phenol shipwreck is to handle, so that bring serious environmental issue.Two, the coal gas that makes of Lurgi stove and BGL stove is the mixture of destructive distillation gas and gasification section coal gas, owing to contain very high methane in the destructive distillation gas, such caloric power of gas is higher, the gas that only is suitable for acting as a fuel uses, if use as unstripped gass such as making synthetic ammonia methyl alcohol, methane separation must be come out, and the separation of methane is comparatively difficult, separating energy consumption is big.If can not separation of methane before entering synthetic tower, can cause a large amount of synthetic generation of dropping a hint, cause ton ammonia or ton methyl alcohol power consumption and material ton all very big.
The fixed bed two stage type gas stove that puts into operation now has two kinds: a kind of is to make two sections stoves of gas continuously, and a kind of is two sections stoves of Cyclic Gas-making.
It is that oxygenant and vaporized chemical are made gas continuously with air and steam that fixed bed is made two sections stoves of gas continuously, because its epimere gas and hypomere gas all is mixed with a large amount of nitrogen and epimere gas is mixed with a large amount of methane, so this stove is mainly to produce propellant combination gas, for various Industrial Stoves provide source of the gas, be applied in industries such as iron and steel, machinery, building materials, glass, aluminum oxide widely.
Two sections stoves of early stage fixed bed Cyclic Gas-making, mainly for production city coal gas, because the relative heating value of natural gas of town gas is low and contain more virose carbon monoxide, the development of Sweet natural gas in addition, two sections stove production cities of Cyclic Gas-making coal gas is on the verge of being replaced, will progressively withdraw from the gas arena of history.
To produce two sections stoves of fixed bed Cyclic Gas-making of synthetic raw gas, Chinese patent has been announced two kinds of processing methodes, is respectively: two sections stoves of Chinese patent (patent No. ZL85100151) divide technology and the device and Chinese patent (patent No. ZL86105803) technology for production of raw-material gas for synthetic ammonia by coal gasification in two stage oven of gas coproduction town gas and water-gas.The common drawback of two patents is:
1, under the stage of blowing can not provide the destructive distillation heat to the retort section feed coal, be intermittently destructive distillation, cause the low feed coal destructive distillation of dry distillation efficiency incomplete, and then cause that methane content does in the gasification section coal gas, be not suitable for using as synthetic raw gas.
2, the town gas of Chan Shenging and the power gas calorific value is low, composition is complicated can only use as low-grade fuel, and purposes is very limited, and further purifying treatment is used as synthetic raw gas.
3, when adopting hypomere water-gas as thermophore direct heating destructive distillation epimere feed coal (interior hot destructive distillation), the destructive distillation gas that a large amount of undecomposed steam (the fixed bed gasification steam decomposition rate is about 40～60%) and epimere produce in the hypomere water-gas mixes can produce a large amount of phenol water, the phenol shipwreck easily causes serious environmental issue to handle.
In view of above reason, two sections furnaceman's process of these two kinds of fixed bed Cyclic Gas-making all do not obtain a large amount of industrial application.
Summary of the invention
In order to overcome the shortcoming that above-mentioned technology exists, the purpose of this utility model is to provide a kind of compound outer thermosetting fixed bed two stage type gas stove, comprises lock gas coal supply apparatus, retort section body of heater, gasification section body of heater, grate, furnace bottom ash handling equipment, it is characterized in that:
Lock gas coal supply apparatus links to each other with the retort section body of heater, and the retort section body of heater links to each other with the gasification section body of heater, and the gasification section body of heater links to each other with furnace bottom ash handling equipment and grate, connects the furnace bottom gas interface in the middle of the furnace bottom, and gasification section body of heater top connects retort section coal gas interface; There is a pipe core at the center of retort section body of heater inner chamber, and there is side branch the upper end of pipe core, and each side branch gathers by the ring gas passage and connects the gasification section gas exit; The retort section sidewall of the furnace body is provided with refractory brick marshalling, several blast tubes of circumference uniform distribution are pressed in the centre of retort section sidewall of the furnace body middle and lower part refractory brick marshalling, the bottom inlet of each blast tube connects gas burner, be provided with point for measuring temperature in each blast tube, the top of several blast tubes is gathered by annular exhaust steam passage and is connected the combustion exhaust outlet.
Combustion gases discord gasification section and retort section in the blast tube are communicated with, and only by the form of indirect heat exchange the retort section feed coal are provided by providing of heat.
Details are as follows for the technical solution of the utility model principle:
The middle low-temperature cracking process and the type of coal are a lot, by type of heating external-heat destructive distillation (also claiming indirect destructive distillation) are arranged, internal heat type destructive distillation (also claiming direct destructive distillation) and the box-like destructive distillation of inside and outside thermojunction.Provide dry distillation of coal heat heating agent, also claim thermophore.Dry distillation of coal thermophore has gaseous heat-carrier, liquid thermophore, solid thermal carriers.
It is fast that rate of heating is compared in internal heat type destructive distillation and external-heat destructive distillation, homogeneous heating, heat-transfer effect is good, the thermo-efficiency height, thereby unit volume throughput is big, but at the fixed bed two stage type gasization, internal heat type destructive distillation main drawback is serious, promptly gasification section coal gas mixed diluting retort section coal gas, the gasification section coal gas that also can be described as retort section coal gas mixed diluting, cause the separation of mix products and utilize difficulty, also be easy to generate a large amount of phenol environmental pollution by water.The external-heat destructive distillation is compared with the internal heat type destructive distillation and is conducted heat slowly, throughput is little, but at the fixed bed two stage type gasization, its advantage of external-heat destructive distillation also is conspicuous, its advantage is that hypomere coal gas (gasification section coal gas) and gas in upper segment (retort section coal gas) are not mixed substantially, can handle hypomere coal gas and gas in upper segment respectively like this, be used respectively.In order to solve the internal heat type destructive distillation uneven problem of conducting heat slowly of conducting heat, the method of a kind of compound outer thermosetting fixed bed two stage type gasization of the utility model, retort section at gas furnace adopts compound external-heat method for destructive distillation, promptly adopt hypomere coal gas and at least a outer hot destructive distillation thermophore that the way of destructive distillation heat is provided, the combustion high temperature flue gas that preferred outer hot destructive distillation thermophore is a combustiblesubstance, the combustion high temperature flue gas of further preferred combustiblesubstance is the retort section gas-fired high-temperature flue gas after purifying.Because the retort section to the two stage type gas stove adopts outer hot destructive distillation, so the coal gas minute quantity of the coal gas of gasification section and retort section is mixed, so two strands of gases can adopt different control techniquess to be used respectively, and a large amount of phenol water generates can not occur in the epimere dry distillation gas process of cooling.
Working process of the present utility model is: feed coal enters the retort section body of heater through lock gas coal supply apparatus, and destructive distillation becomes semicoke indirectly in the retort section body of heater, and dry distillation gas is discharged through retort section coal gas interface.Semicoke after the destructive distillation falls into and carries out gasification in the gasification section body of heater, and gasification is finished the lime-ash of generation and discharged gas furnace by grate break and furnace bottom ash handling equipment.No matter gasification section adopts the system gas or the method for Cyclic Gas-making continuously, its up gasification section coal gas all passes through the pipe core indirect heat exchange at retort section body of heater center and gives the retort section feed coal, reclaimed the sensible heat of gasification section coal gas, up gasification section coal gas is discharged by the gasification section gas exit at last.Fuel gas is through behind the gas burner of retort section, and the high-temperature flue gas of generation carries out the providing of heat by the form of indirect heat exchange to the retort section feed coal through the refractory brick marshalling blast tube.Like this feed coal retort section through two kinds outside indirectly destructive distillation of heat, the destructive distillation uniform and complete.
In sum, the utlity model has reduced investment, gasification efficient height simple to operate, pollution-free, comprehensive, the system pneumatolytic is originally low, is suitable for fixed bed intermittent gas furnace transformation newly-built or to extensively moving at present.The beneficial effects of the utility model are:
1, extracts the higher tar of economic worth in the non-hard coal of raw material, can reduce the gas maked coal production cost.
2, because gasification section coal gas direct destructive distillation epimere feed coal, thus destructive distillation air cooling but the time phenol water generates amount few, be easy to handle free from environmental pollution.
3, the effective pneumatolytic part of hypomere gasification section coal gas that makes is high, has both adapted to production synthetic ammonia and has used as unstripped gas, also adapts to the unstripped gas as synthesizing methanol, methane.
4, the epimere retort section coal gas methane content height that makes, a nitrogen content is low, and the calorific value height can be used as substitute natural gas and uses and the high heating value gas turbine power generation after rough purification, also further use whole like this vapourizing furnace cold gas efficiency height as synthetic raw gas after the purifying treatment.
Description of drawings
Accompanying drawing 1 is the compound outer thermosetting fixed bed two stage type gas furnace structure synoptic diagram of embodiment of the present utility model, and lock gas coal supply apparatus 101, retort section coal gas interface 102, retort section refractory brick marshalling 103, ring gas path 10 4, combustion product gases outlet 105, annular exhaust steam passage 106, blast tube 107, retort section body of heater 108, pipe core 109, gas burner 110, gasification section body of heater 111, water jacket 112, grate 113, furnace bottom ash handling equipment 114, furnace bottom gas interface 115, gasification section gas exit 116 side branch 117, point for measuring temperature 118 are wherein arranged.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further explanation.
As shown in Figure 1, the compound outer thermosetting fixed bed two stage type gas stove of embodiment of the present utility model, comprise lock gas coal supply apparatus 101, retort section body of heater 108, gasification section body of heater 111, grate 113, furnace bottom ash handling equipment 114, it is characterized in that: lock gas coal supply apparatus 101 links to each other with retort section body of heater 108, retort section body of heater 108 links to each other with gasification section body of heater 111, gasification section body of heater 111 links to each other with furnace bottom ash handling equipment 114 and grate 113, connect furnace bottom gas interface 115 in the middle of the furnace bottom, retort section body of heater 108 tops connect retort section coal gas interface 102, and water jacket 112 is arranged around the gasification section body of heater 111; There is a pipe core 109 at the center of retort section body of heater inner chamber, and there is side branch 117 upper end of pipe core 109, and each side branch 117 gathers by ring gas path 10 4 and connects gasification section gas exit 116; Retort section body of heater 108 sidewalls are provided with refractory brick marshalling 103, several blast tubes 107 of circumference uniform distribution are pressed in the centre of retort section body of heater 108 sidewall middle and lower part refractory brick marshallings, the bottom inlet of each blast tube 107 connects gas burner 110, be provided with several points for measuring temperature 118 in each blast tube, the top of several blast tubes 107 is gathered by annular exhaust steam passage 106 and is connected combustion product gases outlet 105.The space that retort section body of heater 108 surrounds is up-small and down-big truncated cone-shaped.
Feed coal enters retort section body of heater 108 through lock gas coal supply apparatus 101, and destructive distillation becomes semicoke, the sensible heat of combustion product gases in the sensible heat of destructive distillation origin of heat gasification section coal gas in pipe core 109 and the blast tube 107 indirectly in retort section body of heater 108.
Dry distillation gas is discharged through retort section coal gas interface 102, enters the dry distillation gas cleaning section.Semicoke after the destructive distillation falls into and carries out gasification in the gasification section body of heater 111, and gasification is finished the lime-ash of generation and discharged by grate 113 breaks and furnace bottom ash handling equipment 114.
When gasification section adopted continuously system gas, furnace bottom gas interface 115 connected oxygenant and vaporized chemical pipeline valve; When gasification section adopted Cyclic Gas-making, furnace bottom gas interface 115 connected oxygenant and descending gas line valve.
No matter gasification section adopts the system gas or the method for Cyclic Gas-making continuously, its up gasification section coal gas all passes through pipe core 109 indirect heat exchanges at retort section body of heater center and gives the retort section feed coal, reclaimed the sensible heat of gasification section coal gas, up gasification section coal gas is discharged by gasification section gas exit 116 at last, enters the gasification section gas heat and reclaims and cleaning section.After gas burner 110 burnings of fuel gas through retort section, the high-temperature flue gas that produces is through refractory brick marshalling blast tube 107, combustion product gases discord gasification section and retort section in the blast tube 107 are communicated with, and only by the form of indirect heat exchange the retort section feed coal are provided by providing of heat.Like this feed coal retort section through two kinds outside indirectly destructive distillation of heat, not only destructive distillation uniform and complete, and combustion product gases do not mix the epimere dry distillation gas, improved the utility value of dry distillation gas.
For the utility model being described better rather than limiting its protection domain, list following examples:
Embodiment one
As shown in Figure 1, compound outer thermosetting fixed bed two stage type gas stove comprises lock gas coal supply apparatus 101, retort section body of heater 108, gasification section body of heater 111, grate 113, furnace bottom ash handling equipment 114.Lock gas coal supply apparatus 101 links to each other with retort section body of heater 108, retort section body of heater 108 links to each other with gasification section body of heater 111, gasification section body of heater 111 links to each other with furnace bottom ash handling equipment 114 and grate 113, connect furnace bottom gas interface 115 in the middle of the furnace bottom, retort section body of heater 108 tops connect retort section coal gas interface 102, and water jacket 112 is arranged around the gasification section body of heater 111; There is a pipe core 109 at the center of retort section body of heater inner chamber, and there is side branch 117 upper end of pipe core 109, and each side branch 117 gathers by ring gas path 10 4 and connects gasification section gas exit 116; Retort section body of heater 108 sidewalls are provided with refractory brick marshalling 103, several blast tubes 107 of circumference uniform distribution are pressed in the centre of retort section body of heater 108 sidewall middle and lower part refractory brick marshallings, the bottom inlet of each blast tube 107 connects gas burner 110, be provided with several points for measuring temperature 118 in each blast tube, the top of several blast tubes 107 is gathered by annular exhaust steam passage 106 and is connected combustion product gases outlet 105.The space that retort section body of heater 108 surrounds is up-small and down-big truncated cone-shaped.
Feed coal enters retort section body of heater 108 through lock gas coal supply apparatus 101, and destructive distillation becomes semicoke, the sensible heat of combustion product gases in the sensible heat of destructive distillation origin of heat gasification section coal gas in pipe core 109 and the blast tube 107 indirectly in retort section body of heater 108.
Dry distillation gas is discharged through retort section coal gas interface 102, enters the dry distillation gas cleaning section.Semicoke after the destructive distillation falls into and carries out gasification in the gasification section body of heater 111, and gasification is finished the lime-ash of generation and discharged by grate 113 breaks and furnace bottom ash handling equipment 114.
The present embodiment gasification section adopts system gas continuously, furnace bottom gas interface 115 connects oxygenant and vaporized chemical pipeline valve, up gasification section coal gas is given the retort section feed coal through pipe core 109 indirect heat exchanges at retort section body of heater center, reclaimed the sensible heat of gasification section coal gas, up gasification section coal gas is discharged by gasification section gas exit 116 at last, enters the gasification section gas heat and reclaims and cleaning section.After gas burner 110 burnings of fuel gas through retort section, the high-temperature flue gas that produces is through refractory brick marshalling blast tube 107, combustion product gases discord gasification section and retort section in the blast tube 107 are communicated with, and only by the form of indirect heat exchange the retort section feed coal are provided by providing of heat.Like this feed coal retort section through two kinds outside indirectly destructive distillation of heat, not only destructive distillation uniform and complete, and combustion product gases do not mix the epimere dry distillation gas, improved the utility value of dry distillation gas.
Embodiment two
As shown in Figure 1, compound outer thermosetting fixed bed two stage type gas stove, comprise lock gas coal supply apparatus 101, retort section body of heater 108, gasification section body of heater 111, grate 113, furnace bottom ash handling equipment 114, it is characterized in that: lock gas coal supply apparatus 101 links to each other with retort section body of heater 108, retort section body of heater 108 links to each other with gasification section body of heater 111, gasification section body of heater 111 links to each other with furnace bottom ash handling equipment 114 and grate 113, connect furnace bottom gas interface 115 in the middle of the furnace bottom, retort section body of heater 108 tops connect retort section coal gas interface 102, and water jacket 112 is arranged around the gasification section body of heater 111; There is a pipe core 109 at the center of retort section body of heater inner chamber, and there is side branch 117 upper end of pipe core 109, and each side branch 117 gathers by ring gas path 10 4 and connects gasification section gas exit 116; Retort section body of heater 108 sidewalls are provided with refractory brick marshalling 103, several blast tubes 107 of circumference uniform distribution are pressed in the centre of retort section body of heater 108 sidewall middle and lower part refractory brick marshallings, the bottom inlet of each blast tube 107 connects gas burner 110, be provided with several points for measuring temperature 118 in each blast tube, the top of several blast tubes 107 is gathered by annular exhaust steam passage 106 and is connected combustion product gases outlet 105.The space that retort section body of heater 108 surrounds is up-small and down-big truncated cone-shaped.
Feed coal enters retort section body of heater 108 through lock gas coal supply apparatus 101, and destructive distillation becomes semicoke, the sensible heat of combustion product gases in the sensible heat of destructive distillation origin of heat gasification section coal gas in pipe core 109 and the blast tube 107 indirectly in retort section body of heater 108.
Dry distillation gas is discharged through retort section coal gas interface 102, enters the dry distillation gas cleaning section.Semicoke after the destructive distillation falls into and carries out gasification in the gasification section body of heater 111, and gasification is finished the lime-ash of generation and discharged by grate 113 breaks and furnace bottom ash handling equipment 114.
The present embodiment gasification section adopts Cyclic Gas-making, furnace bottom gas interface 115 connects oxygenant and descending gas line valve, up gasification section coal gas and blowing air are all passed through pipe core 109 indirect heat exchanges at retort section body of heater center and are given the retort section feed coal, have reclaimed the sensible heat of gasification section coal gas and blowing air.When gasification section fed oxygenant from the bottom, the accumulation of heat of burning provided heat for gasifying stage to the semicoke in the gasification section, and the blowing air that gasification section produces goes blowing air dedusting, sensible heat combustion heat recovery process to handle.When gasification section fed vaporized chemical from the bottom, up gasification section coal gas was discharged by gasification section gas exit 116 at last, entered the gasification section gas heat and reclaimed and cleaning section.
After gas burner 110 burnings of fuel gas through retort section, the high-temperature flue gas that produces is through refractory brick marshalling blast tube 107, combustion product gases discord gasification section and retort section in the blast tube 107 are communicated with, and only by the form of indirect heat exchange the retort section feed coal are provided by providing of heat.Like this feed coal retort section through two kinds outside indirectly destructive distillation of heat, not only destructive distillation uniform and complete, and combustion product gases do not mix the epimere dry distillation gas, improved the utility value of dry distillation gas.
Claims (2)
1. compound outer thermosetting fixed bed two stage type gas stove, comprise lock gas coal supply apparatus (101), retort section body of heater (108), gasification section body of heater (111), grate (113), furnace bottom ash handling equipment (114), it is characterized in that: lock gas coal supply apparatus (101) links to each other with retort section body of heater (108), retort section body of heater (108) links to each other with gasification section body of heater (111), gasification section body of heater (111) links to each other with furnace bottom ash handling equipment (114) and grate (113), connect furnace bottom gas interface (115) in the middle of the furnace bottom, retort section body of heater (108) top connects retort section coal gas interface (102), and gasification section body of heater (111) has water jacket (112) on every side; There is a pipe core (109) at the center of retort section body of heater inner chamber, and there are several side branch (117) upper end of pipe core (109), and each side branch (117) gathers by ring gas passage (104) and connects gasification section gas exit (116); Retort section body of heater (108) sidewall is provided with refractory brick marshalling (103), several blast tubes of circumference uniform distribution (107) are pressed in the centre of retort section body of heater (108) sidewall middle and lower part refractory brick marshalling, the bottom inlet of each blast tube (107) connects gas burner (110), be provided with several points for measuring temperature (118) in each blast tube, the top of several blast tubes (107) is gathered by annular exhaust steam passage (106) and is connected combustion product gases outlet (105).
2. a kind of compound outer thermosetting fixed bed two stage type gas stove according to claim 1, it is characterized in that: the space that retort section body of heater (108) surrounds is up-small and down-big truncated cone-shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201007866U CN202047043U (en) | 2011-04-08 | 2011-04-08 | Composite external heating two-section gas furnace with fixed bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201007866U CN202047043U (en) | 2011-04-08 | 2011-04-08 | Composite external heating two-section gas furnace with fixed bed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642530A (en) * | 2013-12-04 | 2014-03-19 | 张秀军 | Counterflow burning type coal gasifier device and process thereof |
| CN107418626A (en) * | 2017-09-13 | 2017-12-01 | 舒瑞 | A kind of phenol water-splitting gasification installation |
-
2011
- 2011-04-08 CN CN2011201007866U patent/CN202047043U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642530A (en) * | 2013-12-04 | 2014-03-19 | 张秀军 | Counterflow burning type coal gasifier device and process thereof |
| CN103642530B (en) * | 2013-12-04 | 2015-08-26 | 张秀军 | Counter-burning type gasification of coal furnace apparatus and technique |
| CN107418626A (en) * | 2017-09-13 | 2017-12-01 | 舒瑞 | A kind of phenol water-splitting gasification installation |
| CN107418626B (en) * | 2017-09-13 | 2023-09-08 | 舒瑞 | Phenol water pyrolysis gasification device |
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