CN106590748A - Catalytic pyrolysis and gasification method for leather waste - Google Patents
Catalytic pyrolysis and gasification method for leather waste Download PDFInfo
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- CN106590748A CN106590748A CN201611196800.0A CN201611196800A CN106590748A CN 106590748 A CN106590748 A CN 106590748A CN 201611196800 A CN201611196800 A CN 201611196800A CN 106590748 A CN106590748 A CN 106590748A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/463—Gasification of granular or pulverulent flues in suspension in stationary fluidised beds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0986—Catalysts
Abstract
The invention relates to a catalytic pyrolysis and gasification method for leather waste. Pyrolysis and gasification are carried out on leather. The method concretely includes the steps that alkali metal aluminate and silicate which have high melting point and low volatility are loaded to the leather waste with a certain loading amount, pyrolysis is carried out within the range of 300-600 DEG C, gasification is carried out within the range of 800-1200 DEG C, gasification residue containing a catalyst is obtained after gasification, and the catalyst is recovered through washing. The alkali metal aluminate and silicate are applied to pyrolysis and gasification processing of the leather waste, the catalyst has the advantages of being high in catalytic performance, small in volatility under high temperature and small in equipment corrosion, and ash is high in melting temperature and easy to recover.
Description
Technical field
The invention belongs to waste process field, and in particular to a kind of leather waste catalytic gasification catalyst and its user
Method.
Background technology
China is maximum in the world leather manufacturing country and country of consumption, and substantial amounts of leather can be produced in leather production process
Waste material, while discarded leather consumable goodss also can be with substantial amounts of leather castoff, if a large amount of leather castoffs are not acted upon
Directly discarding in environment will be to environmental danger.At present more than leather waste by the way of recycling, landfill, burning
Processed.Only small part high-quality leather has the value of recycling, and major part is difficult to the waste material of recycling
Many to process using landfill, by the way of burning, the leather waste of landfill is difficult to decompose, while substantial amounts of soil can be taken, and burns
During have partial contamination material generation, easily to environment produce secondary pollution.And leather waste is used as carbonaceous material, volatile matters
High, ash is low, and calorific value can be pyrolyzed to leather, gasification process and then be converted into combustion gas in 10-25MJ/Kg, realize waste
Recycling.
Catalytic gasification is a kind of new gasification mode, and catalytic gasification can reduce gasification temperature, improves gasification reaction speed
Rate, the composition of modulation gas.Traditional catalyst mostly is alkali metal, alkaline-earth metal etc., and alkali metal is applied in leather waste
The generation of pyrolytic process tar can be suppressed, reduce process of the tar to follow-up workshop section, while the addition of catalyst can be notable
The reaction rate of gasification is improved, the treating capacity of gasification furnace is improved.And traditional base metal catalysts Na2CO3, K2CO3, KOH
Fusing point is relatively low, and in order to eliminate leather in pollutant, gasification generally carry out at high temperature, under high temperature add alkali metal be catalyzed
Agent can produce melting phenomenon, and the alkali metal of melting can be attached on gasification furnace furnace wall, affect the operation of gasification furnace.Meanwhile, in height
Partial alkaline-metal being had under temperature and evaporateing into gas phase, causing the alkali metal of the loss of catalyst, volatilization can also corrode setting for gasification furnace
It is standby.Therefore a kind of low volatilization, hardly possible inactivation, the base metal catalysts for easily reclaiming are for catalytic gasification is very necessary.
The content of the invention
It is an object of the present invention to provide a kind of corrosion to the furnace apparatus that gasify, the high leather waste catalytic thermal of catalyst recovery yield
The method of solution gasification.
Technical proposal that the invention solves the above-mentioned problems is：
The present invention is to provide a kind of method that leather waste is processed, and the leather waste that catalyst is loaded is through pyrolysis, gas
Combustion gas is prepared after change, the process to leather waste is realized.Catalyst is alkali metal aluminate or/and silicate, and the catalyst has
Have easily recovery, the characteristics of fusing point is high, volatility is low, the lime-ash after gasification realizes the recovery of catalyst after washing filtering.
The present invention provides a kind of method that leather waste carries out catalytic gasification process, comprises the following steps：
(1) base metal catalysts are mixed by mechanical mixture, dipping or in the way of spraying with leather waste, is obtained after mixing
The aluminate of the leather waste of supported catalyst, wherein Na or/and the load capacity of silicate are calculated as leather with metallic element Na
The aluminate of the 1-4wt% of waste material quality, K or/and the load capacity of silicate are calculated as leather waste quality with metallic element K
1-8wt%.
(2) leather waste is added in gasification furnace, 800-1200 DEG C of gasification, pressure is 0-5MP, gasifying agent is air, oxygen
Gas and water steam, CO2One or several.
(3) gasification slag is put in water, 1-2h is stirred at 50-90 DEG C, then through sucking filtration and wash filter cake, contained
The addition of the solution of aluminate and silicate, wherein water is 1-100 times of gasification slag weight.
The aluminate sodium aluminate of described Na or sodium metaaluminate, the silicate of Na is sodium silicate.
The aluminate potassium aluminate of described K, the silicate of K is potassium silicate.
Described gasification furnace is fixed-bed gasification furnace, fluidized-bed gasification furnace and fixed-bed gasification furnace.
The amount of the gasifying agent is 1.3-7 times of leather waste quality.
Described catalyst infusion process is comprised the following steps：
1) base metal catalysts are weighed according to load capacity, after adding water, is sufficiently stirred for, obtained containing base metal catalysts
Solution；
2) will crush, dried leather waste is poured in the solution of preparation, the heating in water bath at 40-90 DEG C, and keep
Stirring, until significantly liquid phase disappears；
3) compounding substances for obtaining are dried 2-12h at 80-110 DEG C, obtain the leather waste of supported catalyst.
The mechanical mixing is comprised the following steps：
Base metal catalysts are mixed with leather waste, after grinding 3-10min on oscillating mill after mixing, machine is obtained
Tool mixing method prepares the leather waste of supported catalyst.
The spraying is comprised the following steps：
(1) base metal catalysts are weighed according to load capacity, 0.5-10 times of water is added on the basis of leather waste, and heated
To 40-90 DEG C；
(2) alkali metal catalyst solution is loaded on leather waste in the form of spraying, and at 80-110 DEG C 2-12h is dried,
Obtain the leather waste of supported catalyst.
Advantages of the present invention is as follows with technique effect：
1st, alkali-metal aluminate, silicate can significantly reduce gasification temperature, improve the reaction rate of gasification；
2nd, alkali-metal aluminate, silicate have higher fusing point, the alkali-metal volatile quantity very little in gasification,
Catalyst recovery yield height (84-96%), the corrosion to the furnace apparatus that gasify is less；
3rd, aluminate, the addition of silicate make the melt temperature of gasification lime-ash raise (>1200 DEG C), it is to avoid in gasification
It is middle to produce melting slagging scorification phenomenon.
Specific embodiment
The present invention is described in further details below by embodiment, but invention protection domain is not limited in described
Hold.
Embodiment 1：The present embodiment with leather waste as sample, with sodium aluminate and sodium silicate as catalyst, using fixed bed
Gasification furnace, is loaded to sodium aluminate and sodium silicate on leather waste by solution dipping method.Catalyst support step is as follows：
1) sodium aluminate and sodium silicate mass ratio are 1, and the mass ratio of water and sodium aluminate is 40, and the mass ratio of water and sodium silicate is
40, mixture is stirred to being completely dissolved at 60 DEG C；
2) alkali metal Na mass is the 1wt% of leather waste quality, and the leather waste after crushing is added in solution,
Simultaneously keeping temperature disappears up to liquid phase for stirring；
3) mixture for obtaining is dried 12h at 110 DEG C, obtains the leather waste of supported catalyst.
The leather waste of supported catalyst is taken, fixed-bed gasification furnace gasification is added, alkali metal Na mass is useless for leather
The 1wt% of material quality, sodium aluminate is 1 with sodium silicate mass ratio, and pressure is 0.1MP, and gasification temperature is 800 DEG C, and gasifying agent is sky
Gas and CO2, air/leather waste mass ratio is 1.5, CO2/ leather waste mass ratio is 2.Residue after gasifying is 20 by liquid-solid ratio, will
Gasification slag is put in water, under temperature 50 C, after stirring leaching 1h, after filtering and washs filter cake, obtain containing sodium aluminate with
The solution of sodium silicate.Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after reaction.
Embodiment 2：The present embodiment, with sodium aluminate as catalyst, using fluidized-bed gasification furnace, leads to leather waste as sample
Cross mechanical mixing sodium aluminate to be loaded on leather waste.Catalyst support step is as follows：
Alkali metal Na mass is the 4wt% of leather waste quality, sodium aluminate is mixed with leather waste and is put into vibration
In pulverizer, take out after grinding 5min, obtain the leather waste that mechanical mixing prepares catalyst load.
The leather waste of a certain amount of load sodium aluminate is taken, adds fluidized-bed gasification furnace to gasify, alkali metal Na mass is
The 4wt% of leather waste quality, pressure is 3MP, and gasification temperature is 1000 DEG C, and gasifying agent is air and water vapour, air/leather
Waste material mass ratio is 3, and water vapour/leather waste mass ratio is 2.Residue after gasifying is 40 by liquid-solid ratio, and gasification slag is put in water,
Under temperature 60 C, after stirring leaching 1h, after filtering and filter cake is washed, obtain the solution containing sodium aluminate and sodium silicate.Instead
Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after answering.
Embodiment 3：The present embodiment, with potassium aluminate as catalyst, using airflow bed gasification furnace, leads to leather waste as sample
Cross spraying potassium aluminate to be loaded on leather waste.Catalyst support step is as follows：
1) alkali metal element K quality is the 8wt% of leather waste quality, is prepared as 20 with the mass ratio of potassium aluminate with water and is urged
Agent solution, and it is heated to 80 DEG C；
2) solution of preparation is sprayed onto on leather waste with Sprayable, at 80 DEG C 12h is dried, obtain supported catalyst
Leather waste.
The leather waste of load aluminic acid K potassium is taken, airflow bed gasification furnace gasification is added, alkali metal element K quality is useless for leather
The 8wt% of material quality, pressure is 5MP, and gasification temperature is 1200 DEG C, and gasifying agent is oxygen and water vapour, oxygen/leather waste matter
Than being 0.7, water vapour/leather waste mass ratio is 2 to amount.Residue after gasifying is 60 by liquid-solid ratio, gasification slag is put in water, in temperature
At 70 DEG C of degree, after stirring leaching 1h, after filtering and filter cake is washed, obtain the solution containing potassium aluminate and potassium silicate.After reaction
Charcoal percent conversion is shown in Table 1 with catalyst recovery yield.
Embodiment 4：The present embodiment, with potassium silicate as catalyst, using fixed-bed gasification furnace, leads to leather waste as sample
Cross solution dipping method potassium silicate to be loaded on leather waste.Catalyst support step is as follows：
1) mass ratio of water and potassium silicate is 40, and mixture is stirred to being completely dissolved at 60 DEG C；
2) alkali metal element K quality is the 2wt% of leather waste quality, and the leather waste after crushing is added in solution,
Simultaneously keeping temperature disappears up to liquid phase for stirring；
3) mixture for obtaining is dried 12h at 110 DEG C, obtains the leather waste of supported catalyst.
The leather waste of load potassium silicate is taken, fixed-bed gasification furnace gasification is added, alkali metal element K quality is leather waste
The 2wt% of quality, pressure is 2MP, and gasification temperature is 1000 DEG C, and gasifying agent is oxygen, and oxygen/leather waste mass ratio is 1.1.
Residue after gasifying is 1 by liquid-solid ratio, and gasification slag is put in water, at 80 DEG C of temperature, after stirring leaching 1h, after filtering and is washed
Filter cake, obtains the solution containing potassium aluminate and potassium silicate.Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after reaction.
Embodiment 5：The present embodiment, with sodium silicate as catalyst, using fixed-bed gasification furnace, leads to leather waste as sample
Cross solution dipping method sodium silicate to be loaded on leather waste.Catalyst support step is as follows：
1) mass ratio of water and sodium silicate is 30, and mixture is stirred to being completely dissolved at 60 DEG C；
2) alkali metal Na mass is the 3wt% of leather waste quality, and the leather waste after crushing is added in solution,
Simultaneously keeping temperature disappears up to liquid phase for stirring；
3) mixture for obtaining is dried 12h at 110 DEG C, obtains the leather waste of supported catalyst.
The leather waste of load sodium silicate is taken, fixed-bed gasification furnace gasification is added, alkali metal Na mass is useless for leather
The 3wt% of material quality, pressure is 4MP, and gasification temperature is 1100 DEG C, and gasifying agent is air, and air/leather waste mass ratio is 5.
Residue after gasifying is 10 by liquid-solid ratio, and gasification slag is put in water, at 90 DEG C of temperature, after stirring leaching 1h, after filtering and is washed
Filter cake is washed, the solution containing sodium aluminate and sodium silicate is obtained.Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after reaction.
Embodiment 6：The present embodiment with leather waste as sample, with sodium metaaluminate as catalyst, using fixed-bed gasification furnace,
Sodium metaaluminate is loaded on leather waste by solution dipping method.Catalyst support step is as follows：
1) mass ratio of water and sodium metaaluminate is 40, and mixture is stirred to being completely dissolved at 60 DEG C；
2) alkali metal Na mass is the 2wt% of leather waste quality, and the leather waste after crushing is added in solution,
Simultaneously keeping temperature disappears up to liquid phase for stirring；
3) mixture for obtaining is dried 12h at 110 DEG C, obtains the leather waste of supported catalyst.
The leather waste of load sodium metaaluminate is taken, fixed-bed gasification furnace gasification is added, alkali metal Na mass is leather
The 2wt% of waste material quality, pressure is 4MP, and gasification temperature is 1000 DEG C, and gasifying agent is air and CO2, air/leather waste matter
Amount is than being 3, CO2/ leather waste mass ratio is 2.Residue after gasifying is 20 by liquid-solid ratio, gasification slag is put in water, in temperature 70
At DEG C, after stirring leaching 1h, after filtering and filter cake is washed, obtain the solution containing sodium aluminate and sodium silicate.Carbon after reaction
Conversion ratio is shown in Table 1 with catalyst recovery yield.
Embodiment 7：The present embodiment with leather waste as sample, with sodium silicate and potassium silicate as catalyst, using fixed bed
Gasification furnace, is loaded to sodium silicate and potassium silicate on leather waste by solution dipping method.Catalyst support step is as follows：
1) mass ratio of water and sodium silicate is 20, and the mass ratio of water and potassium silicate is 20, mixture stir at 60 DEG C to
It is completely dissolved；
2) alkali metal Na mass is the 2wt% of leather waste quality, and alkali metal element K quality is leather waste quality
2wt%, leather waste after crushing is added in solution, stirring and keeping temperature is until liquid phase disappears；
3) mixture for obtaining is dried 12h at 110 DEG C, obtains the leather waste of supported catalyst.
The leather waste of supported catalyst is taken, fixed-bed gasification furnace gasification is added, alkali-metal load capacity is 4wt%, Na：
K=1 (mass ratio), pressure is 1MP, and gasification temperature is 1000 DEG C, and gasifying agent is air and water vapour, air/leather waste matter
Than being 2, water vapour/leather waste mass ratio is 2 to amount.Residue after gasifying is 40 by liquid-solid ratio, gasification slag is put in water, in temperature
At 80 DEG C, after stirring leaching 1h, after filtering and filter cake is washed, obtained containing sodium silicate and potassium silicate, sodium aluminate and potassium silicate
Solution.Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after reaction.
Comparative example 1：The present embodiment with leather waste as sample, using fixed-bed gasification furnace gasify, gasifying agent be air with
CO2, the mass ratio of air/leather waste is 1.5, CO2The mass ratio of/leather waste is 2, and gasification temperature is 800 DEG C, and pressure is
0.1MP.Charcoal percent conversion is determined after reaction.
Comparative example 2：The present embodiment with leather waste as sample, using fixed-bed gasification furnace gasify, gasifying agent be oxygen with
Water vapour, the mass ratio of oxygen/leather waste is 0.7, and the mass ratio of water vapour/leather waste is 2, and gasification temperature is 1200
DEG C, pressure is 5MP.Charcoal percent conversion is determined after reaction.
Comparative example 3：The present embodiment with leather waste as sample, with Na2CO3For catalyst, using fixed-bed gasification furnace, lead to
Mechanical mixing is crossed by Na2CO3Load on leather waste.Catalyst support step is as follows：
Alkali metal Na mass is the 2wt% of leather waste quality, by Na2CO3Mix with leather waste and be put into vibration powder
In broken machine, take out after grinding 5min, obtain the leather waste that mechanical mixing prepares catalyst load.
Take load Na2CO3Leather waste, add fixed-bed gasification furnace gasification, alkali metal Na mass be leather waste
The 2wt% of quality, pressure is 2MP, and gasification temperature is 1000 DEG C, and gasifying agent is oxygen, and oxygen/leather waste mass ratio is 1.1,
Residue after gasifying is 1 by liquid-solid ratio, and gasification slag is put in water, at 80 DEG C of temperature, after stirring leaching 1h, after filtering and is washed
Filter cake, obtains containing Na2CO3Solution.Charcoal percent conversion is shown in Table 1 with catalyst recovery yield after reaction.
Charcoal percent conversion and catalyst recovery yield in embodiment under the different condition of table 1.
Claims (8)
1. a kind of method of leather waste catalytic pyrolysis gasification, it is characterised in that comprise the following steps：
（1）Base metal catalysts are mixed by mechanical mixture, dipping or in the way of spraying with leather waste, is loaded after mixing
The aluminate of the leather waste of catalyst, wherein Na or/and the load capacity of silicate are calculated as leather waste with metallic element Na
The 1-4 wt% of quality, the aluminate of K or/and the load capacity of silicate are calculated as the 1- of leather waste quality with metallic element K
8wt%；
（2）By leather waste add gasification furnace in, 800-1200 DEG C gasification, pressure be 0-5 MP, gasifying agent be air, oxygen,
Water vapour, CO2One or several；
（3）Gasification slag is put in water, 1-2 h are stirred at 50-90 DEG C, then through sucking filtration and wash filter cake, obtained containing aluminum
The addition of the solution of hydrochlorate or/and silicate, wherein water is 1-100 times of gasification slag weight.
2. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that the aluminum of described Na
Hydrochlorate sodium aluminate or sodium metaaluminate, the silicate of Na is sodium silicate.
3. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that the aluminic acid of described K
Salt potassium aluminate, the silicate of K is potassium silicate.
4. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that described gasification furnace
For fixed-bed gasification furnace, fluidized-bed gasification furnace and fixed-bed gasification furnace.
5. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that the gasifying agent
Measure as 1.3-7 times of leather waste quality.
6. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that described catalyst
Infusion process is comprised the following steps：
1）Base metal catalysts are weighed according to load capacity, after adding water, is sufficiently stirred for, obtained containing the molten of base metal catalysts
Liquid；
2）To crush, dried leather waste is poured in the solution of preparation, the heating in water bath at 40-90 DEG C, and be kept stirring for,
Until obvious liquid phase disappears；
3）The compounding substances for obtaining are dried 2-12h at 80-110 DEG C, obtain the leather waste of supported catalyst.
7. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that the mechanical mixture
Method is comprised the following steps：
Base metal catalysts are mixed with leather waste, after grinding 3-10 min on oscillating mill after mixing, machinery is obtained
Mixing method prepares the leather waste of supported catalyst.
8. a kind of method of leather waste catalytic pyrolysis gasification as claimed in claim 1, it is characterised in that the spraying bag
Include following steps：
(1) claim base metal catalysts according to load capacity, 0.5-10 times of water is added on the basis of leather waste, and be heated to 40-
90℃；
(2) alkali metal catalyst solution is loaded on leather waste in the form of spraying, and 2-12 h are dried at 80-110 DEG C, is obtained
To the leather waste of supported catalyst.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102476008A (en) * | 2010-11-30 | 2012-05-30 | 新奥科技发展有限公司 | Method for recovering and recycling alkali metal catalyst |
| WO2014196924A1 (en) * | 2013-06-04 | 2014-12-11 | Enviro-Power Pte Ltd | System and method for converting plastic/rubber to hydrocarbon fuel by thermo-catalytic process |
| CN104449865A (en) * | 2014-10-16 | 2015-03-25 | 中国科学院山西煤炭化学研究所 | Method for improving catalytic coal gasification activity and catalyst recovery rate |
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| CN109107595A (en) * | 2018-09-12 | 2019-01-01 | 中国科学院山西煤炭化学研究所 | A kind of method of carbon dioxide-water-alcohol system recycling base metal catalysts |
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