CN103374418B - Entrained-flow bed gasification method of sludge and pulverized coal - Google Patents
Entrained-flow bed gasification method of sludge and pulverized coal Download PDFInfo
- Publication number
- CN103374418B CN103374418B CN201210235425.1A CN201210235425A CN103374418B CN 103374418 B CN103374418 B CN 103374418B CN 201210235425 A CN201210235425 A CN 201210235425A CN 103374418 B CN103374418 B CN 103374418B
- Authority
- CN
- China
- Prior art keywords
- sludge
- coal
- slag
- entrained flow
- gasification method
- 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.)
- Active
Links
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention provides an entrained-flow bed gasification method of sludge and pulverized coal, belonging to the field of gasification. The method comprises the following steps: (1) adding slag into the sludge containing water, uniformly mixing, wherein the mass ratio of the sludge containing water to the slag is 1:(0.5-2); (2) adding coal into the matter obtained in the step (1), mixing, and totally grinding till the particle diameter is less than 0.2mm to obtain mixture powder bodies; and (3) carrying the mixture powder bodies to enter an entrained-flow bed gasification furnace by utilizing gasification agent to conduct a pyrolysis gasification reaction at the high temperature of 1400-1700 DEG C, so as to generate crude gas rich in H2 and CO. The method provided by the invention is adopted for gasifying the sludge, and has the advantages of simple technology, low heat energy loss in the gasification process and high gasification efficiency, realizes high-efficiency and quick disposition of the sludge, and realizes resource utilization of wastes.
Description
Technical field
The present invention relates to a kind of entrained flow gasification method of sludge coal dust, more particularly to a kind of sludge and coal are in air flow bed
Mixing gasifying produces the gasification process of fuel gas, belongs to field of gasification.
Background technology
The yield of municipal sludge is huge and complicated component, and how municipal sludge is disposed becomes people and closed with utilization
The problem of note.For a long time, people always will " minimizing, stabilisation, innoxious " mud as final purpose.
Under this principle, the technology of people's prioritizing selection better economy to sludge being disposed.At present, the process side of municipal sludge
Method mainly have landfill, for farming fertilizer, burn etc..
Sanitary landfill method processes sludge and has the advantages that simple to operate, investment is supported, but landfill yard landfill sludge needs to occupy
Contain certain noxious material in a large amount of soils and sludge, fill the improper percolate that is likely to cause and ooze out, severe contamination underground
Water resource.With the enhancing of mankind's environmental consciousness, requirement more and more higher of the people to urban environment, so as to dispose to Sludge landfill
Also more and more higher is required, the range of choice for filling place is less and less, fill cost also more and more higher.
Sludge is utilized as farmland fertilizer and refers to that sludge can be used in soil, because in sludge components Jing after processing as fertilizer
The content of organic matter, nitrogen, phosphorus etc. is above general farmers''s barnyard manure, also containing potassium and other trace elements, if being applied in soil,
Physics, chemistry and biological character to soil has certain improving effect.But containing big in sludge from wastewater treatment plant
The pathogenic microorganism of amount and parasite, if not being controlled by, then sludge can be good for during Land_use change or use to people and animals
Health works the mischief；Often there is the heavy metals such as substantial amounts of copper, nickel, cadmium, lead, zinc, mercury in another aspect sludge and many poisonous have
Machine thing, if farmland Long-Time Service can cause soil pollution, they enter human body after being absorbed by crops further through food chain, so as to
Affect health.Therefore, the dispute that agricultural sludge causes is more and more.Such as in France and Germany, some areas have occurred
Refusal uses the phenomenon of sludge agricultural product.
Used as one of the method for sludge treatment, it can be such that the organic matter in sludge all carbonizes, kill cause of disease for sludge incineration
Body, can to greatest extent reduce sludge volume.But because sludge moisture content is big, need mummification, burning to bring before burning
Substantial amounts of heat energy income, invests on the contrary huge, in addition after sludge incineration, easily produces the pollutants such as bioxin, causes environment
Secondary pollution.
In order to solve above-mentioned technical problem, people have carried out continuous research to sludge disposal technology, it is proposed that by sludge with
Coal is mixed with sludge coal slurry, then sludge coal slurry is burnt or gasification process method.The method is that one kind can pacify
Full disposing sludge and refuse reclamation method free from environmental pollution and that heat energy or clean combustible gas and/or synthesis gas can be produced,
Meet the strategic objective of the sustainable development of China.
In prior art, Chinese patent literature CN102191085A discloses a kind of method of producing gas from sludge, including（1）
Sludge coal slurry is made with sludge, coal；（2）The above-mentioned sludge coal slurry Jing for preparing is pumped by and high pressure oxygen mixed aerosol
In spraying into gasification furnace, and the generation raw gas that reacts in gasification furnace.In above-mentioned technology, the side gasified altogether using sludge and coal
Method prepares coal gas, realizes the recycling of sludge, with preferable economic benefit.But by sludge, coal in above-mentioned technology
When charcoal makes sludge coal slurry, it usually needs add a certain amount of stabilizer to keep the stability of sludge coal slurry, so can increase
The preparation cost of sludge coal slurry；Secondly, the moisture content in sludge coal slurry is very high, generally 75 ~ 95wt%, in the gas of sludge coal slurry
During change, it is necessary first to which the water in sludge coal slurry is evaporated, and evaporation of water can cause to be lost in gasification it is more
Energy, cause sludge coal slurry gasify energy consumption increase；Finally, sludge coal slurry Jing is pumped by being sprayed with high pressure oxygen mixed aerosol
When entering gasification furnace gasification, the nozzle requirement to gasification furnace is also very high, and nozzle works in a high voltage state for a long time, easily causes
Nozzle variant, service life is reduced.
In order to solve above-mentioned technical problem, also have sludge coal through mechanical filtering dehydration in prior art, be prepared into dirt
After mud coal filter cake, the gasification process for then sludge coal filter cake being gasified again.Chinese patent literature CN101781073A is disclosed
A kind of method that sludge dewatering compcsite fuelization is processed, including（1）Filter aid is pre-processed, coal is adopted for filter aid, it is right
Coal is crushed, levigate and classification；（2）The coal dust that sludge and pretreatment are finished is mixed, mixed proportion is according to coal dust
Quality is calculated with respect to the volume of sludge, is 20 ~ 100g/l；（3）Coal slime mixing carries out mechanical filtering dehydration after finishing；（4）To filter
Cake is burnt, is gasified or pyrolysis processing.
In above-mentioned technology, first mechanical filtering dehydration is carried out to sludge and coal, sludge coal filter cake is obtained, then to sludge coal
Filter cake is burnt, is gasified or pyrolysis processing.The addition of stabilizer is this method avoid, preparation cost can be saved, and it is dirty
The moisture content of mud coal filter cake is 30 ~ 50wt%, and for comparing the moisture content of sludge coal slurry, its moisture content is reduced a lot, Ke Yijie
Save heat energy when burning, gasification or pyrolysis processing.But, in above-mentioned technology, in sludge coal filter cake the moisture content of 30 ~ 50wt% according to
Old comparison is high, in burning, gasification or during pyrolysis processing firstly the need of to sludge coal filter cake in the water that contains be evaporated, and water
Evaporation can cause more energy are lost in gasification, and the energy consumption for causing sludge coal filter cake to gasify is still very high.
For above-mentioned technical problem, those skilled in the art always search for one kind and can effectively realize specific resistance to filtration
Method.Jing inventor further study show that, if the moisture content in control sludge is less than 10wt%, then by sludge and coal
Sludge coal powder of the particle diameter less than 0.2mm is prepared into, sludge coal powder is carried out into gasification process by entrained flow gasification technique, by
Moisture content in sludge coal powder is very low, when so being gasified, can save the loss of heat energy in gasification, so that
The efficiency of the raw gas for preparing can be greatly improved.But, due to the organic principle contained in sludge it is more, the knot in sludge
Heshui is difficult to remove completely, so during by sludge grinding flour, sludge dry powder is easily combined into bulk, it is difficult to by dirt
It is below 0.2mm that mud dry powder is ground to particle diameter, and the sludge powder particles for particle diameter more than 0.2mm, it is cannot to carry out air flow bed
Gasification process.
Have in prior art and drying sludge has been prepared into into powder relevant report of the particle diameter less than 0.2mm, such as China
Patent CN102183027A provide a kind of method of disposal of high heating value excess sludge, including by pending moisture content be 80 ~
The excess sludge of 90wt% is sent into plate compression water dispenser and is dehydrated, and the press filtration moisture content for obtaining is the dewatered sludge of 45 ~ 55wt%
Cake, sends obtained mud cake into sludge pelletizer, and the coarse granule of 3 ~ 5mm is broken at normal temperatures, and mud granule is dry in heat energy
Further mummification between change, the mud granule feeding sludge after mummification is made powder equipment and is further processed, and is touched at a high speed using air-flow
Hit technology, a large amount of natural airs of inspiration in powder equipment made as medium with sludge dewatering, from sludge a large amount of Interstitial Waters at dissociation,
Appearance water, promotes mud powder internal moisture quickly to ooze out, and sludge powder footpath is 150 mesh ~ 300 mesh after process（That is 0.05mm ~
0.15mm）, moisture content is 5 ~ 15wt%, the sludge dry powder for obtaining is sprayed in sludge incinerator and is burned.In above-mentioned technology, pass through
Plate compression and mud granulizing are set, and using being further dried to mud granule between heat energy mummification, then using air-flow at a high speed
Impacting technology obtains particle diameter for 150 mesh ~ 300 mesh to making powder to mud granule（That is 0.05mm ~ 0.15mm）, moisture content be 5 ~
The sludge dry powder of 15wt%.Although the technology can by the size controlling of sludge dry powder less than 0.2mm, moisture control 5 ~
15wt%, but the technology is mainly realizes above-mentioned target by air-flow high velocity impact technology, and air-flow high velocity impact technology
The middle speed for requiring air-flow must be exceeded the velocity of sound, it is well known that if to produce supersonic flow is to need sizable energy
Amount, and it is high to provide the equipment cost of supersonic flow, only utilize the stage in laboratory at present, and for yield such as
For this big Treatment of Sludge, its effect is extremely limited.
At this stage, China is big coal country, with coal as power generation substantially fuel.The growth of national annual generating capacity
Rate is 7.3%, and this slag for just bringing steam power plant's every year discharge is sharply increased, and for example, nineteen ninety-five slag emission amount is up to 1.25 hundred million
Ton, is about 1.5 hundred million tons in 2000, and by 2010 200000000 tons have been reached.In addition in metallurgical industry, also there is the discharge of a large amount of slags.This
A large amount of discharges of a little slags cause huge pressure to the ecological environment of China.And china natural resources reserves are limited, the waste of slag
Recycling has become an important techno-economic policy in China's economic construction, be solve China power generation environmental pollution,
The important means of contradiction between resource shortage.
At present, slag is mainly used in the fields such as building materials, electric power.Because slag is typically in rock-like or glassy, hardness is high,
Particle crushes difficult, if directly use it for sludge modification or processed, there is particle and is difficult to crush, and sludge is modified
With the problem of costs and poor dehydration results, therefore in prior art, still slag the report of sludge modification and processed is not directly used in into
Road.
The content of the invention
When the technical problem to be solved is to carry out gasification process to sludge coal filter cake, it is necessary first to sludge coal
The water contained in filter cake is evaporated, and being easily caused heat energy loss in gasification increases, and then it is slag modifying to provide a kind of Jing
, the entrained flow gasification method of the sludge coal dust of low-water-content.
In order to solve above-mentioned technical problem, the invention provides a kind of entrained flow gasification method of sludge coal dust, including such as
Lower step：
（1）Add slag in water-containing sludge, be well mixed, the water-containing sludge is 1 with the mass ratio of the slag:
(0.5~2)；
（2）To Jing steps（1）Coal is added in mixed material, is well mixed, crushing is milled to altogether particle diameter less than 0.2mm,
Obtain mixture powder；
（3）Said mixture powder is carried with gasifying agent and enter airflow bed gasification furnace, send out at a high temperature of 1400 ~ 1700 DEG C
Raw pyrolytic gasification reaction, generates and is rich in H2With the raw gas of CO.
The step（1）In, the particle diameter of the slag is 3 ~ 20mm.
The coal and the Jing steps（1）The mass ratio of mixed material is (70 ~ 98.5): (1.5~30).
The step（1）In, also add activated carbon granule in the water-containing sludge.
The activated carbon granule is (1 ~ 10) with the mass ratio of the water-containing sludge: (90~99).
The particle diameter of the activated carbon granule is 0.05 ~ 3mm.
Jing steps（1）Moisture percentage in sewage sludge after process is less than 10wt%.
The step（2）In, common mill is carried out to the mixed material and coal using ball mill, during common mill,
It is passed through fluidized wind mixture powder is further dried.
The temperature of the fluidized wind is 100 ~ 200 DEG C.
The coal is any one or a few in brown coal, bituminous coal, anthracite；The gasifying agent be oxygen, vapor or
The mixture of oxygen and vapor.
The slag is any one or more in coal furnace slag, coal gasifier slag, metallurgical slag.
The present invention has the advantage that compared with prior art：
（1）The entrained flow gasification method of sludge coal dust of the present invention, is mixed, slag using water-containing sludge with slag
Carry out just dehydration to water-containing sludge first and be modified, make a part of irreducible water contained in sludge be changed into Free water, reduce
The high viscosity of sludge, is easy to slag to be preferably entrained in water-containing sludge；Then above-mentioned mixed material is mixed with coal
Even, in mixed process, coal is played with slag and cooperates with facilitation, further improves the modified effect to water-containing sludge, makes dirt
The most of irreducible water contained in mud is changed into Free water, further reduces the caking property of sludge, is easy to slag uniformly to mix with coal
It is miscellaneous in sludge；When grinding altogether, the interaction force mutually between the variable grain of doping increases, and the active force between particle increases
After big, it is more beneficial for slag and sludge, coal grinds obtain mixture powder of the particle diameter less than 0.2mm altogether；In addition, adopting in the present invention
Slag containing the metal oxide such as substantial amounts of CaO, FeO, MgO, MnO, and the quasi-metal oxides can be with gasification furnace
Desulfurization process are directly carried out to coal gasification course, the content of sulfide in the raw gas of generation is reduced；When the slag is selected
When coal-burning boiler slag or coal gasifier slag, what is contained inside it can be in sludge coal without after-flame or the carbonaceous material of gasification
Further gasify in the gasification of powder, so as to improve charcoal percent conversion.The entrained flow gasification side of sludge coal dust of the present invention
Method has the advantages that process is simple, gasification heat energy loss be low, gasification efficiency is high, realizes efficient, the quick place to sludge
Put, and realize maximally utilizing for resource.
（2）The entrained flow gasification method of sludge coal dust of the present invention, it is also further when being dehydrated to water-containing sludge
Add activated carbon granule, on the one hand, the addition of activated carbon granule can be such that the irreducible water in water-containing sludge is more converted into certainly
By water, the caking property of water-containing sludge is reduced, coal, slag and activated carbon granule are preferably entrained in aqueous when being easy to crush common mill
In sludge；The addition of another aspect activated carbon granule is caused during common mill, and it is mixed with slag that activated carbon granule is entrained in coal
Between polymer beads, between variable grain when interacting during common mill, the friction force between particle can be increased,
And the increase of friction force is more beneficial for the slag of hardness is bigger and forms pulverized slag during common mill；Additionally, honed altogether
Can also be passed through after the fluidized wind of uniform temperature in journey, so be more beneficial for the free evaporation of water for discharging.
Specific embodiment
With reference to embodiments, the present invention is further described in detail, but is not limited to this.
Embodiment 1
Add coal furnace slag of the 5kg particle diameters for 3mm in the sludge that 10kg moisture content is 70%, be well mixed, Ran Houxiang
The anthracite of 85kg is added in mixed material, the particle diameter for being milled to powder altogether is crushed after being well mixed less than 0.2mm, mixed
Compound powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor, into airflow bed gasification furnace,
1400 DEG C issue raw pyrolytic gasification reaction, generate and are rich in H2With the raw gas of CO, wherein the addition of the mixture powder is
1000kg/h, the addition of the oxygen, with the addition gauge of every kilogram of mixture powder, is 0.57Nm3, the vapor
Addition is with every Nm3Oxymeter, is 0.21kg.
Embodiment 2
Add coal furnace slag of the 10kg particle diameters for 40mm in the sludge that 10kg moisture content is 75%, be well mixed, then
The anthracite of 80kg is added in mixed material, the particle diameter of powder is milled to after being well mixed altogether less than 0.2mm, is mixed
Powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor, into airflow bed gasification furnace,
1450 DEG C issue raw pyrolytic gasification reaction, generate and are rich in H2With the raw gas of CO, wherein the addition of the mixture powder is
1000kg/h, the addition of the oxygen, with the addition gauge of every kilogram of mixture powder, is 0.57Nm3, the vapor
Addition is with every Nm3Oxymeter, is 0.21kg.
Embodiment 3
It is 10mm to add 20kg particle diameters in the sludge that 10kg moisture content is 80% for the metallurgical slag of 5mm, 1kg particle diameters
Coal furnace slag, is well mixed, and the bituminous coal of 70kg is then added in mixed material, after being well mixed, powder is milled to altogether
Particle diameter be less than 0.2mm, obtain mixture powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor
Body, into airflow bed gasification furnace, raw pyrolytic gasification reaction is issued at 1500 DEG C, is generated and is rich in H2With the raw gas of CO, wherein institute
State mixture powder addition be 1000kg/h, the addition of the oxygen with the addition gauge of every kilogram of mixture powder,
For 0.57Nm3, the addition of the vapor is with every Nm3Oxymeter, is 0.21kg.
Embodiment 4
Add coal gasifier slag of the 0.5kg particle diameters for 15mm in the sludge that 1kg moisture content is 85%, be well mixed, so
The brown coal of 98.5kg are added in backward mixed material, the particle diameter of powder is milled to after being well mixed altogether less than 0.2mm, is mixed
Compound powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor, into airflow bed gasification furnace,
1550 DEG C issue raw pyrolytic gasification reaction, generate and are rich in H2With the raw gas of CO, wherein the addition of the mixture powder is
1000kg/h, the addition of the oxygen, with the addition gauge of every kilogram of mixture powder, is 0.57Nm3, the vapor
Addition is with every Nm3Oxymeter, is 0.21kg.
Embodiment 5
It is 20mm coal furnace slags to add 10kg particle diameters in the sludge that 10kg moisture content is 90%, is well mixed, Ran Houxiang
The bituminous coal of 65kg is added in mixed material, the particle diameter of powder is milled to after being well mixed altogether less than 0.2mm, mixture powder is obtained
Body；Then said mixture powder is carried, into airflow bed gasification furnace, at 1600 DEG C as gasifying agent with oxygen and vapor
Raw pyrolytic gasification reaction is issued, is generated and is rich in H2With the raw gas of CO, wherein the addition of the mixture powder be 1000kg/
H, the addition of the oxygen, with the addition gauge of every kilogram of mixture powder, is 0.58Nm3, the addition of the vapor with
Per Nm3Oxymeter, is 0.23kg.
Embodiment 6
It is 5mm to add 3.5kg particle diameters in the sludge that 10kg moisture content is 80% for the metallurgical slag of 8mm, 1.5kg particle diameters
Coal furnace slag, 0.101kg particle diameters for 0.05mm activated carbon granule, be well mixed, then in mixed material plus
Enter the coal of 85kg, after being well mixed, the particle diameter of powder is milled to altogether less than 0.2mm, obtain mixture powder, when grinding altogether 200 are passed through
DEG C fluidized wind, obtain mixture powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor, is entered
Enter airflow bed gasification furnace, raw pyrolytic gasification reaction is issued at 1500 DEG C, generate and be rich in H2With the raw gas of CO, wherein the mixing
The addition of powder is 1000kg/h, and the addition of the oxygen is with the addition gauge of every kilogram of mixture powder
0.58Nm3, the addition of the vapor is with every Nm3Oxymeter, is 0.21kg.
Embodiment 7
Add 5kg particle diameters in the sludge that 10kg moisture content is 85% is for the coal gasifier slag of 10mm, 5kg particle diameters
The coal furnace slag of 10mm, 0.417kg particle diameters are the activated carbon granule of 1mm, are well mixed, and are then added in mixed material
Enter the brown coal of 80kg, be milled to the particle diameter of powder after being well mixed altogether less than 0.2mm, 100 DEG C of fluidized wind is passed through when grinding altogether, obtain
Mixture powder；Then said mixture powder is carried as gasifying agent with oxygen and vapor, into airflow bed gasification furnace,
Raw pyrolytic gasification reaction is issued at 1550 DEG C, is generated and is rich in H2With the raw gas of CO, wherein the addition of the mixture powder
For 1000kg/h, the addition of the oxygen, with the addition gauge of every kilogram of mixture powder, is 0.57Nm3, the vapor
Addition with every Nm3Oxymeter, is 0.21kg.
Embodiment 8
Add 20kg particle diameters in the sludge that 10kg moisture content is 90% is for the coal furnace slag of 13mm, 2.258kg particle diameters
The activated carbon granule of 2mm, is well mixed, and the bituminous coal of 70kg is then added in mixed material, is milled to altogether after being well mixed
The particle diameter of powder is less than 0.2mm, and 150 DEG C of fluidized wind is passed through when grinding altogether, obtains mixture powder；Then with oxygen and vapor
As gasifying agent, said mixture powder is carried, into airflow bed gasification furnace, raw pyrolytic gasification reaction is issued at 1600 DEG C, it is raw
Into rich in H2With the raw gas of CO, wherein the addition of the mixture powder is 1000kg/h, the addition of the oxygen with
The addition gauge of every kilogram of mixture powder, is 0.57Nm3, the addition of the vapor is with every Nm3Oxymeter, is 0.21kg.
Embodiment 9
Add coal gasifier slag, 0.101kg particle diameter of the 0.5kg particle diameters for 16mm in the sludge that 1kg moisture content is 95%
For the activated carbon granule of 3mm, it is well mixed, the anthracite of 98.5kg is then added in mixed material, after being well mixed
The particle diameter for being milled to powder altogether is less than 0.2mm；Then said mixture powder is carried as gasifying agent with oxygen and vapor, is entered
Enter airflow bed gasification furnace, raw pyrolytic gasification reaction is issued at 1650 DEG C, generate and be rich in H2With the raw gas of CO, wherein the mixing
The addition of powder is 1000kg/h, and the addition of the oxygen is with the addition gauge of every kilogram of mixture powder
0.57Nm3, the addition of the vapor is with every Nm3Oxymeter, is 0.21kg.
Test case
Raw gas and lime-ash after airflow bed gasification furnace gasification in embodiment 1 ~ 9 are chosen, to raw gas composition, efficiency of carbon con version
And cooled coal gas effect is tested, test result is as shown in table 1；The meltbility of lime-ash is surveyed using ash fusion point determination meter
Examination, test result is as follows.
The gasification index Measurement results of the airflow bed gasification furnace of table 1
The present invention carries out ash melting measure using ash fusion point determination meter to the lime-ash produced after sludge coal dust gasification, ties
Fruit shows, in embodiment 1 ~ 9, the deformation temperature of lime-ash（DT）For 1070 ~ 1120 DEG C, softening temperature（ST）For 1150 ~ 1190 DEG C,
Flowing temperature (FT) is 1220 ~ 1250 DEG C.
By above-mentioned test result, the entrained flow gasification method of sludge coal dust of the present invention, efficiency of carbon con version is higher than
95%, cold gas efficiency is higher than 83%, the active ingredient of coal gas（CO+H2）Up to 95.15 ~ 98.22%；Compared with prior art, originally
The entrained flow gasification method of invention institute sludge coal dust has the advantages that gasification heat energy loss is low, gasification efficiency is high.By right
The lime-ash produced after sludge coal dust gasification carries out ash melting measurement result and shows, the softening temperature of lime-ash is 1150 ~ 1190
DEG C, in alkalescence, alkalescence composition can improve the ash fusion point of lime-ash to the slag added in the present invention, and after ash fusion point is improved, be more easy to
Slag is discharged in solid form in air flow bed.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment, and the obvious change thus extended out or
Among changing still in the invention scope of the claims.
Claims (27)
1. a kind of entrained flow gasification method of sludge coal dust, comprises the steps：
(1) add slag in water-containing sludge, be well mixed, the water-containing sludge is 1 with the mass ratio of the slag:(0.5~
2)；
(2) coal is added in the mixed material of Jing steps (1), is well mixed, crushing is milled to altogether particle diameter less than 0.2mm, obtains
Mixture powder；
(3) carry said mixture powder with gasifying agent and enter airflow bed gasification furnace, occur at a high temperature of 1400~1700 DEG C
Pyrolytic gasification reacts, and generates and is rich in H2With the raw gas of CO.
2. the entrained flow gasification method of sludge coal dust according to claim 1, it is characterised in that described in the step (1)
The particle diameter of slag is 3~20mm.
3. the entrained flow gasification method of sludge coal dust according to claim 1 or claim 2, it is characterised in that in the step (2),
The coal is (70~98.5) with the mass ratio of the mixed material of the Jing steps (1):(1.5~30).
4. the entrained flow gasification method of sludge coal dust according to claim 1 or claim 2, it is characterised in that in the step (1),
Also add activated carbon granule in the water-containing sludge.
5. the entrained flow gasification method of sludge coal dust according to claim 3, it is characterised in that in the step (1), to institute
State and also add in water-containing sludge activated carbon granule.
6. the entrained flow gasification method of sludge coal dust according to claim 4, it is characterised in that the activated carbon granule and institute
The mass ratio for stating water-containing sludge is (1~10):(90~99).
7. the entrained flow gasification method of sludge coal dust according to claim 5, it is characterised in that the activated carbon granule and institute
The mass ratio for stating water-containing sludge is (1~10):(90~99).
8. the entrained flow gasification method of sludge coal dust according to claim 4, it is characterised in that the grain of the activated carbon granule
Footpath is 0.05~3mm.
9. according to the entrained flow gasification method of the arbitrary sludge coal dust of claim 5~7, it is characterised in that the activated carbon
The particle diameter of particle is 0.05~3mm.
10. according to the entrained flow gasification method of the arbitrary sludge coal dust of claim 1 or 2 or 5~8, it is characterised in that Jing is walked
Suddenly the moisture percentage in sewage sludge after (1) is processed is less than 10wt%.
The entrained flow gasification method of 11. sludge coal dusts according to claim 3, it is characterised in that Jing after step (1) process
Moisture percentage in sewage sludge is less than 10wt%.
The entrained flow gasification method of 12. sludge coal dusts according to claim 4, it is characterised in that Jing after step (1) process
Moisture percentage in sewage sludge is less than 10wt%.
The entrained flow gasification method of 13. sludge coal dusts according to claim 9, it is characterised in that Jing after step (1) process
Moisture percentage in sewage sludge is less than 10wt%.
14. according to the entrained flow gasification method of the arbitrary sludge coal dust of claim 1 or 2 or 5~8 or 11~13, its feature
It is in the step (2), common mill to be carried out to the mixed material and coal using ball mill, during common mill, is passed through
Fluidized wind is further dried to mixture powder.
The entrained flow gasification method of 15. sludge coal dusts according to claim 3, it is characterised in that in the step (2), profit
Common mill is carried out to the mixed material and coal with ball mill, during common mill, fluidized wind is passed through and mixture powder is entered
One step is dried.
The entrained flow gasification method of 16. sludge coal dusts according to claim 4, it is characterised in that in the step (2), profit
Common mill is carried out to the mixed material and coal with ball mill, during common mill, fluidized wind is passed through and mixture powder is entered
One step is dried.
The entrained flow gasification method of 17. sludge coal dusts according to claim 9, it is characterised in that in the step (2), profit
Common mill is carried out to the mixed material and coal with ball mill, during common mill, fluidized wind is passed through and mixture powder is entered
One step is dried.
The entrained flow gasification method of 18. sludge coal dusts according to claim 10, it is characterised in that in the step (2), profit
Common mill is carried out to the mixed material and coal with ball mill, during common mill, fluidized wind is passed through and mixture powder is entered
One step is dried.
19. according to claim 14 sludge coal dust entrained flow gasification method, it is characterised in that the fluidisation air temperature is
100~200 DEG C.
20. according to the entrained flow gasification method of the arbitrary sludge coal dust of claim 15~18, it is characterised in that the fluidisation
Air temperature is 100~200 DEG C.
21. according to the entrained flow gasification side of the arbitrary sludge coal dust of claim 1 or 2 or 5~8 or 11~13 or 15~19
Method, it is characterised in that the slag is any one or more in coal furnace slag, coal gasifier slag, metallurgical slag.
The entrained flow gasification method of 22. sludge coal dusts according to claim 3, it is characterised in that the slag is coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
The entrained flow gasification method of 23. sludge coal dusts according to claim 4, it is characterised in that the slag is coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
The entrained flow gasification method of 24. sludge coal dusts according to claim 9, it is characterised in that the slag is coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
The entrained flow gasification method of 25. sludge coal dusts according to claim 10, it is characterised in that the slag is coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
26. according to claim 14 sludge coal dust entrained flow gasification method, it is characterised in that the slag be coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
27. according to claim 20 sludge coal dust entrained flow gasification method, it is characterised in that the slag be coal furnace
Any one or more in slag, coal gasifier slag, metallurgical slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235425.1A CN103374418B (en) | 2012-04-27 | 2012-07-09 | Entrained-flow bed gasification method of sludge and pulverized coal |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101275888 | 2012-04-27 | ||
| CN201210127588 | 2012-04-27 | ||
| CN201210127588.8 | 2012-04-27 | ||
| CN201210235425.1A CN103374418B (en) | 2012-04-27 | 2012-07-09 | Entrained-flow bed gasification method of sludge and pulverized coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103374418A CN103374418A (en) | 2013-10-30 |
| CN103374418B true CN103374418B (en) | 2017-05-17 |
Family
ID=49460265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210235425.1A Active CN103374418B (en) | 2012-04-27 | 2012-07-09 | Entrained-flow bed gasification method of sludge and pulverized coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103374418B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670656A (en) * | 2016-01-19 | 2016-06-15 | 河南华天环保科技有限公司 | Device and process for pyrolysis gasification treatment of sludge by circulating fluidized bed pyrolysis gasifier |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594231A1 (en) * | 1992-10-21 | 1994-04-27 | Metallgesellschaft Ag | Process for gasifying waste products containing combustible substances |
| CN101358153A (en) * | 2008-09-22 | 2009-02-04 | 武汉路德科技有限责任公司 | Dry sludge production method of auxiliary fuel for power plant boiler and process equipment |
| CN101839488A (en) * | 2010-03-22 | 2010-09-22 | 昆明理工大学 | Method for gasifying and incinerating combustible solid wastes by utilizing rotary kiln |
| CN102021062A (en) * | 2010-12-13 | 2011-04-20 | 日照鲁信金禾生化有限公司 | Process method for preparing boiler fuels from citric acid industrial flocculent sludge |
| CN102183027A (en) * | 2011-03-10 | 2011-09-14 | 北京科技大学 | Treatment method of high calorific value excess sludge |
| CN102358849A (en) * | 2011-09-09 | 2012-02-22 | 华东理工大学 | Heat recovering type fuel gas preparation system and fuel gas preparation method thereof |
-
2012
- 2012-07-09 CN CN201210235425.1A patent/CN103374418B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594231A1 (en) * | 1992-10-21 | 1994-04-27 | Metallgesellschaft Ag | Process for gasifying waste products containing combustible substances |
| CN101358153A (en) * | 2008-09-22 | 2009-02-04 | 武汉路德科技有限责任公司 | Dry sludge production method of auxiliary fuel for power plant boiler and process equipment |
| CN101839488A (en) * | 2010-03-22 | 2010-09-22 | 昆明理工大学 | Method for gasifying and incinerating combustible solid wastes by utilizing rotary kiln |
| CN102021062A (en) * | 2010-12-13 | 2011-04-20 | 日照鲁信金禾生化有限公司 | Process method for preparing boiler fuels from citric acid industrial flocculent sludge |
| CN102183027A (en) * | 2011-03-10 | 2011-09-14 | 北京科技大学 | Treatment method of high calorific value excess sludge |
| CN102358849A (en) * | 2011-09-09 | 2012-02-22 | 华东理工大学 | Heat recovering type fuel gas preparation system and fuel gas preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103374418A (en) | 2013-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101215488B (en) | Organic garbage and sludge mixed solid fuel and preparation method thereof | |
| Wu et al. | Characteristics and catalytic actions of inorganic constituents from entrained-flow coal gasification slag | |
| CN101839488B (en) | Method for gasifying and incinerating combustible solid wastes by utilizing rotary kiln | |
| CN100390255C (en) | Sludge fuel stick and its prepn | |
| Finney et al. | The reuse of spent mushroom compost and coal tailings for energy recovery: comparison of thermal treatment technologies | |
| CN102352273B (en) | Biomass carbon for iron ore sintering, preparation thereof and application thereof | |
| CN101899349B (en) | Method for preparing solid renewable clean fuel from agricultural and forestry waste/domestic garbage | |
| CN104479784A (en) | Environment-friendly type carbon-adding biomass fuel and processing method thereof | |
| CN105665421A (en) | Municipal refuse handling method and equipment | |
| CN102504843B (en) | Heat accumulation type fuel gas radiation pipe rotary hearth furnace domestic garbage dry distillation method | |
| CN102260567A (en) | Biomass molding fuel for sintering iron ore and application | |
| JP2010534121A (en) | Processing method to thoroughly recycle solid waste | |
| CN103951153A (en) | Method and system for preparing carbon adsorbent material by mixing waste plastics with sludge | |
| CN103343026A (en) | Process method and process system for preparing solid fuel through biomass and sludge | |
| CN101113341B (en) | Method for preparing combustible gas by using metallurgy molten slag and solid combustible substance | |
| CN103374425A (en) | Sludge pulverized coal and preparation method thereof | |
| Varjani | Efficient removal of tar employing dolomite catalyst in gasification: Challenges and opportunities | |
| CN105733734A (en) | Method and device for preparing fuel by means of mixing coke powder with sludge from sewage plants | |
| CN113683305A (en) | System for melting, harmless and cooperative disposal of household garbage incineration fly ash | |
| CN101177641A (en) | Environment-friendly type regeneration biological charcoal | |
| CN104646396B (en) | A kind of method utilizing solid waste preparing hydrogen carbon fuel | |
| CN103374418B (en) | Entrained-flow bed gasification method of sludge and pulverized coal | |
| CN103374417B (en) | Fluidized bed gasification method of sludge and pulverized coal | |
| CN101412937A (en) | Railway garbage derived fuel having composite structure and preparation thereof | |
| CN100457673C (en) | Lightweight waste slag haydite and its preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: REN XIANGKUN Free format text: FORMER OWNER: WANG QING Effective date: 20141115 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ren Xiangkun Inventor before: Wang Qing |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG QING TO: REN XIANGKUN Free format text: CORRECT: ADDRESS; FROM: 102208 CHANGPING, BEIJING TO: 100020 CHAOYANG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20141115 Address after: 100020 2508 Times Building, 8 East Beichen Road, Beijing, Beichen, Chaoyang District Applicant after: Ren Xiangkun Address before: 102208 Huilongguan 36 hospital, Beijing, Changping District 1-102 Applicant before: Wang Qing |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |