CN101294085A - Process and apparatus for producing biomass gas - Google Patents

Process and apparatus for producing biomass gas Download PDF

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Publication number
CN101294085A
CN101294085A CNA2008100150978A CN200810015097A CN101294085A CN 101294085 A CN101294085 A CN 101294085A CN A2008100150978 A CNA2008100150978 A CN A2008100150978A CN 200810015097 A CN200810015097 A CN 200810015097A CN 101294085 A CN101294085 A CN 101294085A
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China
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gas
cracking
water
smelly
aerogenesis chamber
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CNA2008100150978A
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Chinese (zh)
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赵靖敏
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赵靖敏
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Priority to CNA2008100150978A priority Critical patent/CN101294085A/en
Publication of CN101294085A publication Critical patent/CN101294085A/en

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Abstract

The invention relates to a method and a device for preparing biomass fuel from biomass materials. The method comprises the following steps: loading biomass materials in a gas generating chamber, and carrying out pyrolysis to generate mixed gas; cracking the tar to generate a combustible gas; filtering off fly-ash and residual tar in the combustible gas; carrying out gas-water separation to separate water; and deodorizing to obtain the biomass fuel. The device comprises the gas generating chamber (2) fixed on a pedestal (1), a material storage chamber (3) fixed on the upper side of the gas generating chamber (2), a cracking catalyst absorber (4) fixed on the upper side of the material storage chamber (3), a gas-water separator (5) communicated with the cracking catalyst absorber (4), and a deodorizing and gas storage box (6) communicated with the gas-water separator (5). The device and the method have the advantages that the device and the method can effectively remove tar, fly-ash, vapor, odor, etc. in the biomass fuel without contaminating the environment and can ensure the combustion heat efficiency of the biomass fuel, etc.

Description

A kind of preparation method of biological fuel gas and device thereof

One, technical field:

The present invention relates to a kind of preparation method and device thereof of biological fuel gas, specifically a kind of biomass of utilizing: the animal excretion of various crop straws, faggot, firewood, wood chip, leaf, the generation of raising specialist, the scrap feed material of professional raising farmer, the medium-height grass dregs of a decoction, waste or used plastics goods, domestic refuse etc. are produced the preparation method and the device thereof of biological fuel gas for raw material.

Two, background technology:

Along with developing rapidly of state-owned economy, a large amount of exploitations of coal, oil, Sweet natural gas, resources such as coal, oil, Sweet natural gas as the new energy, substitute coal, oil, Sweet natural gas equal energy source and pay close attention to for people with biomass also in rapid minimizing.At present, utilize biomass to produce the device of biological fuel gas, exist following shortcoming: the combustion gas tar content of 1, producing is big; 2, flying dust is too much in the combustion gas; 3, the water vapour in the combustion gas is too much; 4, the peculiar smell of combustion gas is dense, and seriously contaminate environment makes the people be difficult to stand.Tar, flying dust amount are big, easily cause the obstruction of gas-fired equipment, pipeline, kitchen range etc.; Water vapour in the combustion gas easily condenses into water in flow process, also can cause the obstruction of pipeline etc., and the water vapour that enters the kitchen range combustion zone absorbs a large amount of heats rapidly, has reduced the thermo-efficiency of combustion gas; Peculiar smell in the combustion gas is in burning the time can be distributed around air, and seriously contaminate environment makes the people be difficult to stand.Owing to exist above shortcoming, make present biomass fuel device of air be difficult to apply, cause biomass to substitute the disposable energy such as coal, oil, Sweet natural gas as a kind of new forms of energy, also be difficult to promote.

Three, summary of the invention:

The preparation method who the purpose of this invention is to provide a kind of novel biomass combustion gas, it can remove tar, flying dust, water vapour and peculiar smell etc. in the biological fuel gas effectively, and is free from environmental pollution, has guaranteed biological fuel gas incendiary thermo-efficiency.The present invention also provides a kind of preparation facilities for this method,

For achieving the above object, the technical scheme that the present invention takes is: the raw material of biomass is packed in the aerogenesis chamber, generate mixed gas; The raw material of biomass is the scrap feed material of the straw of respectively being a farmer, faggot, firewood, wood chip, leaf, animal excretion that raising specialist produces, professional raising farmer, the medium-height grass dregs of a decoction, waste or used plastics goods, domestic refuse etc., with the tar in the mixed gas that generates after the pyrolysis repeatedly cracking generate inflammable gas; And flying dust filtered; Again inflammable gas is carried out gas-water separation, isolate the moisture in the inflammable gas; The inflammable gas of isolating moisture is eliminated the unusual smell again, and the inflammable gas after eliminating the unusual smell is just available.Its technical process is:

Step 1, pyrolysis-→ step 2, coke tar cracking-→ step 3, dewater-→ step 4, eliminate the unusual smell.

Step 1, pyrolysis: raw material is sent in the aerogenesis chamber, carried out pyrolysis, generate air mixture;

Step 2, coke tar cracking: with the tar in the pyrogenous origin mixed gas repeatedly cracking generate inflammable gas, and filter out the flying dust in the mixed gas; Entering the sorbent material that blocks water again dewaters first, the sorbent material that blocks water at first is incubated the catalyst for cracking of its below and makes the catalyst for cracking temperature rise to the coke tar cracking temperature to make coke tar cracking, when temperature constantly is increased to manifesting suddenly of the sorbent material hydrophobic nature that blocks water, water vapour in the inflammable gas is blocked water, and the sorbing material prevention is passed through and formation water, this water flows downward under action of gravity and constantly washes away tar on the cleaving layer and the flying dust biomass material below entering, the raw material that has tar constantly moves downward and enters the high-temperature zone cracking, and said process goes round and begins again and carries out repeatedly; Inflammable gas after dewatering first enters and subtracts smelly filtering medium and enter first and eliminate the unusual smell;

Step 3, dewater: will filter combustion gas after the cracking and carry out once more gas-water separation and remove residual water-content in the combustion gas;

Step 4, eliminate the unusual smell: peculiar smell is removed in the combustion gas that will remove behind the moisture once more; Combustion gas behind the removal peculiar smell is just available.

Because the present invention filters cracking with pyrogenous origin mixed gas (containing tar, flying dust, water vapour, peculiar smell etc. in the combustion gas that generate this moment), makes tar cracking repeatedly, generates inflammable gas, and removes flying dust; Dewater again, isolate water vapour; Eliminate the unusual smell again, remove peculiar smell; Just available.

The kind of catalyst for cracking is a lot, and commonly used have rhombspar, a ferric oxide etc.

The sorbent material that blocks water is a kind of Mg-bearing water aluminosilicate secondary mineral and mixes nickel-base catalyst (the sorbent material separate case that blocks water is applied for a patent).The proportioning of Mg-bearing water aluminosilicate secondary mineral and nickel-base catalyst is 6.5-7.5: 2.5-3.5.This agent has stronger greasy dirt adsorptive power is arranged, and fabulous heat-insulating property has strong absorptive when low temperature, has hydrophobic nature when high temperature again.

Subtracting smelly filtering medium is porphyrite class natural materials (subtracting smelly filtering medium separate case applies for a patent), and this material has active odor absorption ability and has the greasy dirt adsorptive power simultaneously.

The present invention also provides a kind of above-mentioned preparation method's device, and it includes base, aerogenesis chamber, storage compartment, cracking and catalyzing resorber, air water separator, subtracts smelly expansion box etc.The aerogenesis chamber is fixed on the base, the storage compartment is fixed on the upside of aerogenesis chamber and is communicated with the aerogenesis chamber, the cracking and catalyzing resorber is fixed on the upside of storage compartment and is communicated with the storage compartment, the cracking and catalyzing resorber is communicated with air water separator by pipeline, air water separator by pipeline with subtract smelly expansion box and be communicated with.

The structure formation of storage compartment is a lot, for the ease of sealing, is provided with sealing cover at the charging opening place of storage compartment, and a side and the charging opening of sealing cover are articulated and connected.When reinforced, open sealing cover, feed in raw material; Reinforced bonnet top cover labyrinth, and seal.

The structure formation of aerogenesis chamber is also a lot, and perisporium that can the aerogenesis chamber is provided with cyclic water jacket, is connected with the round-robin cooling fluid in the cyclic water jacket, controls the temperature of aerogenesis chamber by cooling fluid; Cooling fluid can adopt water coolant; The middle part of aerogenesis chamber is provided with eccentric swage, and the bottom of aerogenesis chamber is provided with feeder, can prevent that the material in the aerogenesis chamber is built on stilts when pyrolysis, so that material pyrolysis better; Bottom in the aerogenesis chamber is provided with flow-controlled device, can control the flow direction that enters air, is beneficial to the abundant pyrolysis of raw material.

The structure formation of cracking and catalyzing resorber is a lot, can include three layers: be followed successively by the cracking and catalyzing layer from the bottom to top, the adsorption layer that blocks water, subtract smelly filtering layer, be placed with catalyst for cracking in the cracking and catalyzing layer, blocking water is placed with the sorbing material that blocks water in the adsorption layer, subtracts to be placed with in the smelly filtering layer to subtract smelly filtering medium.

The structure formation of air water separator is a lot, can include separator shell, heat exchanger etc., heat exchanger is fixed in the separator shell, the import of heat exchanger is communicated with the cracking and catalyzing resorber, the outlet of heat exchanger with subtract smelly expansion box and be communicated with, in the separator shell, the outside of heat exchanger is connected with recirculated cooling water.

The structure formation that subtracts smelly expansion box is a lot, can include two layers up and down, and lower floor is a reservoir bed, and the upper strata is for subtracting smelly layer.Subtract to be placed with in the smelly layer and subtract smelly filtering medium and be provided with division board, subtract smelly layer and be communicated with reservoir bed, the top of reservoir bed is provided with the inlet mouth, the bottom that are communicated with air water separator and is provided with water port, subtracts smelly layer and is provided with gas outlet.

The principle of work of this device:

Open the sealing cover of storage compartment, biomass are added the aerogenesis chamber by the storage compartment, and fill it up with airtight sealing cover together with the storage compartment; By aerogenesis chamber base point biomass-burning, the flow-controlled device of the air multiparity air chamber bottom that catalysis is used enters the aerogenesis chamber equably, the biomass indoor to aerogenesis heat, make biomass pyrolytic generate mixed gas, biomass are in pyrolytic process, produce a large amount of heats simultaneously, need not to provide again heat energy this moment.The temperature of the biomass pyrolytic that aerogenesis is indoor can be carried out temperature control by the circulation fluid of aerogenesis chamber perisporium.The biomass of biomass in the mixed gas rising preheating storage compartment that generates, mixed gas sees through the biomass in the storage compartment, enter the cracking and catalyzing resorber, in the cracking and catalyzing resorber, at first the tar in the combustion gas, flying dust are filtered through catalyst for cracking, catalyst for cracking carries out cracking repeatedly to tar simultaneously, generates inflammable gas; Enter the adsorption layer that blocks water, the sorbent material that blocks water at first is incubated the catalyst for cracking of its below and makes the catalyst for cracking temperature rise to the coke tar cracking temperature to make coke tar cracking, the hydrophobic nature of waterproofing agent manifests suddenly when temperature rises to certain altitude, water vapour in the inflammable gas is blocked water, and the sorbing material prevention is passed through and formation water, this water flows downward under action of gravity and constantly washes away tar on the cleaving layer and the flying dust biomass material below entering, the raw material that has tar constantly moves downward and enters the high-temperature zone cracking, and said process goes round and begins again and carries out repeatedly.Inflammable gas enters then and subtracts smelly filtering layer, removes peculiar smell by the smelly filtering medium that subtracts that subtracts in the smelly filtering layer; Remove inflammable gas behind the peculiar smell and enter and further isolates moisture in the air water separator, enter again and subtract smelly expansion box and further remove peculiar smell, just available.

Because the present invention is with the mixed gas that generates in the aerogenesis chamber, in the cracking and catalyzing resorber, at first tar, flying dust are filtered, with the coke tar cracking that filters out, make the mixed gas that generates in the aerogenesis chamber become inflammable gas, and the inflammable gas that generates once dewatered, eliminates the unusual smell, enter air water separator again and subtract smelly expansion box and carry out secondary and dewater, eliminate the unusual smell, make inflammable gas purer.The upside of the aerogenesis chamber that device of the present invention is provided with the storage compartment, the mixed gas that generates in the aerogenesis chamber biomass in just can the preheating storage compartment had both been saved the energy, can make again the tar that produces in the biomass pyrolytic repeatedly cracking eliminated to greatest extent.

Therefore, the present invention has tar, flying dust, water vapour and the peculiar smell etc. that can remove effectively in the biological fuel gas, and is free from environmental pollution, guaranteed biological fuel gas incendiary thermo-efficiency.It is remarkable that device of the present invention has the effect of removing tar, flying dust, water vapour and peculiar smell in the biological fuel gas, guaranteed biological fuel gas incendiary thermo-efficiency; Compact construction, characteristics such as aerogenesis is effective.

Four, description of drawings

Fig. 1 is the preparation facilities synoptic diagram of biological fuel gas of the present invention;

Fig. 2 is the aerogenesis chamber synoptic diagram of the preparation facilities of biological fuel gas;

Fig. 3 is the feeder synoptic diagram of the preparation facilities of biological fuel gas;

Fig. 4 is the cracking and catalyzing resorber synoptic diagram of the preparation facilities of biological fuel gas;

Fig. 5 is the air water separator synoptic diagram of the preparation facilities of biological fuel gas;

Fig. 6 is the smelly expansion box synoptic diagram that subtracts of the preparation facilities of biological fuel gas.

Five, embodiment

Biomass material packed into carry out pyrolysis in the aerogenesis chamber, generate mixed gas; The raw material of biomass can be respectively the be a farmer scrap feed material, the medium-height grass dregs of a decoction, waste or used plastics goods, domestic refuse etc. of animal excretion that straw, faggot, firewood, wood chip, leaf, raising specialist produce, professional raising farmer; The mixed gas that generates after the pyrolysis is removed the filtration of tar, flying dust; And, generate inflammable gas simultaneously with coke tar cracking; Again inflammable gas is carried out gas-water separation, isolate the moisture in the inflammable gas; The inflammable gas of isolating moisture is eliminated the unusual smell again, and the inflammable gas after eliminating the unusual smell is just available.

Its technical process is:

Step 1, pyrolysis-→ step 2, coke tar cracking-→ step 3, dewater-→ step 4, eliminate the unusual smell.

Step 1, pyrolysis: raw material is sent in the aerogenesis chamber, carried out pyrolysis, generate air mixture;

Step 2, coke tar cracking: with the tar in the pyrogenous origin mixed gas repeatedly cracking generate inflammable gas, and filter out the flying dust in the mixed gas; Entering the sorbent material that blocks water again dewaters first, the sorbent material that blocks water at first is incubated the catalyst for cracking of its below and makes the catalyst for cracking temperature rise to the coke tar cracking temperature to make coke tar cracking, when temperature constantly is increased to manifesting suddenly of the sorbent material hydrophobic nature that blocks water, water vapour in the inflammable gas is blocked water, and the sorbing material prevention is passed through and formation water, this water flows downward under action of gravity and constantly washes away tar on the cleaving layer and the flying dust biomass material below entering, the raw material that has tar constantly moves downward and enters the high-temperature zone cracking, and said process goes round and begins again and carries out repeatedly; Inflammable gas after dewatering first enters and subtracts smelly filtering medium and enter first and eliminate the unusual smell;

Step 3, dewater: will filter combustion gas after the cracking and carry out once more gas-water separation and remove residual water-content in the combustion gas;

Step 4, eliminate the unusual smell: peculiar smell is removed in the combustion gas that will remove behind the moisture once more; Combustion gas behind the removal peculiar smell is just available.

The kind of catalyst for cracking is a lot, and commonly used have rhombspar, a ferric oxide etc.The sorbent material that blocks water is a kind of Mg-bearing water aluminosilicate secondary mineral and mixes nickel-base catalyst.The proportioning of Mg-bearing water aluminosilicate secondary mineral and nickel-base catalyst is 7: 3.Subtracting smelly filtering medium is porphyrite class natural materials.Sorbent material and subtract smelly filtering medium separate case and declare patent of invention blocks water.

Because the present invention filters cracking with pyrogenous origin mixed gas (containing tar, flying dust, water vapour, peculiar smell etc. in the combustion gas that generate this moment), makes coke tar cracking, generates inflammable gas, and removes flying dust; Dewater again, isolate water vapour; Eliminate the unusual smell again, remove peculiar smell; Just available.

The present invention also provides a kind of above-mentioned preparation method's device, and accompanying drawing is an embodiment of this device, and it includes base 1, aerogenesis chamber 2, storage compartment 3, cracking and catalyzing resorber 4, air water separator 5, subtracts smelly expansion box 6 etc.Aerogenesis chamber 2 is fixed on the base 1, storage compartment 3 is fixed on the upside of aerogenesis chamber 2 and is communicated with aerogenesis chamber 2, cracking and catalyzing resorber 4 is fixed on the upside of storage compartment 3 and is communicated with storage compartment 3, cracking and catalyzing resorber 4 is communicated with air water separator 5 by pipeline, air water separator 5 by pipeline with subtract smelly expansion box 6 and be communicated with.

The structure formation of storage compartment 3 is a lot, and present embodiment is for the ease of sealing, and 3 charging opening place is provided with sealing cover in the storage compartment, and a side and the charging opening of sealing cover are articulated and connected.

The structure formation of aerogenesis chamber 2 is also a lot, and the perisporium of present embodiment aerogenesis chamber 2 is provided with cyclic water jacket 21, is connected with the round-robin cooling fluid in the cyclic water jacket 21, controls the temperature of aerogenesis chamber 2 by cooling fluid; The cooling fluid of present embodiment adopts water coolant; The middle part of aerogenesis chamber 2 is provided with eccentric swage 22, and the bottom of aerogenesis chamber 2 is provided with feeder 23; Be provided with flow-controlled device 24 in the bottom of aerogenesis chamber 2.Eccentric swage 2 ends are provided with capable of opening and closing binder head, and downwards the binder head struts automatically and increases the binder area during binder, and the binder head closes up automatically to reduce area when upwards lifting.The effect of flow-controlled device 24 is that the control air directional flow is even, with prevent to stop up, combustion and flow-controlled device itself and on every side by the generation of high temperature scaling loss situation partially.This device has the specific function that raw material is very easily lighted simultaneously.

The structure formation of feeder 23 is a lot, present embodiment is electric structure form (as Fig. 1, shown in Figure 3), include motor 75, transmission mechanism 76, crawler belt 73, sprocket wheel 71, carrying roller 72, driving lever 74, sprocket wheel 71 is 2, motor 75, transmission mechanism 76 are arranged on 2 outsides, aerogenesis chamber, crawler belt 73, sprocket wheel 71, carrying roller 72, driving lever 74 are arranged on 2 inboards, aerogenesis chamber, motor 75 is connected with wherein 1 sprocket wheel 71 by transmission mechanism 76, crawler belt 73 is installed on the sprocket wheel 71 and is provided with carrying roller 72, and driving lever 74 is fixed on the crawler belt 73.Drive sprocket wheel 71, crawler belt 73 by motor 75 by transmission mechanism 76, carry out blanking by carrying roller 72.Also can adopt manual structure formation (as Fig. 2).

Because the fan noise that use aerogenesis chamber 2 is bigger, in order to reduce noise, the blower fan of aerogenesis chamber 2 is provided with blower fan sound damper 9, in the blower fan sound damper 9 quieter material is housed.

The structure formation of cracking and catalyzing resorber 4 is a lot, present embodiment includes three layers: be followed successively by cracking and catalyzing layer 43 from the bottom to top, the adsorption layer 42 that blocks water, subtract smelly filtering layer 41, be placed with catalyst for cracking in the cracking and catalyzing layer 43, blocking water is placed with the sorbing material that blocks water in the adsorption layer 42, subtracts to be placed with in the smelly filtering layer 41 to subtract smelly filtering medium.

The structure formation of air water separator 5 is a lot, present embodiment includes separator shell, heat exchanger 51 etc., heat exchanger 51 is fixed in the separator shell, the import of heat exchanger 51 is communicated with cracking and catalyzing resorber 4, the outlet of heat exchanger 51 with subtract smelly expansion box 6 and be communicated with, in the separator shell, the outside of heat exchanger 51 is connected with recirculated cooling water.Present embodiment is in order to remove peculiar smell better, sets up one deck deodorizing layer 52 at the downside of separator shell and is placed with in deodorizing layer 52 and subtracts smelly filtering medium and be provided with division board.

The structure formation that subtracts smelly expansion box 6 is a lot, and present embodiment includes two layers up and down, and lower floor is a reservoir bed 61, and the upper strata is for subtracting smelly layer 62.Subtract to be placed with in the smelly layer 62 and subtract smelly filtering medium and be provided with division board 66, subtract smelly layer 62 and be communicated with reservoir bed 61, the top of reservoir bed 61 is provided with the inlet mouth 63, the bottom that are communicated with air water separator 5 and is provided with water port 64, subtracts smelly layer 62 and is provided with gas outlet 65.

When using this device: open the sealing cover of storage compartment, biomass are added aerogenesis chamber 2 by storage compartment 3, and fill it up with airtight sealing cover together with storage compartment 3; The 2 base point biomass-burnings from the aerogenesis chamber, the air that catalysis is used enters aerogenesis chamber 2 equably through flow-controlled device 24, and biomass are heated, and pyrolysis generates mixed gas.Pyrolytic temperature in the aerogenesis chamber 2 can be carried out temperature control by the circulation fluid of aerogenesis chamber 2 perisporiums.Mixed gas rising that generates and the biomass in the preheating storage compartment 3, mixed gas enters cracking and catalyzing resorber 4 then, at first tar, the flying dust in 43 pairs of combustion gas of catalyst for cracking filters in cracking and catalyzing resorber 4, simultaneously tar carried out cracking, generates inflammable gas; Enter the adsorption layer 42 that blocks water again, the sorbing material that blocked water of the moisture in the inflammable gas absorbs, and enters then to subtract smelly filtering layer 41, removes peculiar smell; Inflammable gas behind the removal peculiar smell enters further isolates moisture in the air water separator 5, enter to subtract further removal peculiar smell of smelly expansion box 6 again, just available.

Because the present invention is with the mixed gas that generates in the aerogenesis chamber 2, in cracking and catalyzing resorber 4, at first tar, flying dust are filtered, with the coke tar cracking that filters out, make the mixed gas that generates in the aerogenesis chamber 2 become inflammable gas, and the inflammable gas that generates once dewatered, eliminates the unusual smell, enter air water separator 5 again and subtract smelly expansion box 6 and carry out secondary and dewater, eliminate the unusual smell, make inflammable gas purer.The upside of the aerogenesis chamber 2 that device of the present invention is provided with storage compartment 3, the mixed gas that generates in the aerogenesis chamber 2 biomass in just can preheating storage compartment 3 had both been saved the energy, can make biomass pyrolysis better again.

Therefore, the present invention has tar, flying dust, the steam and different that can effectively remove in the biological fuel gas Flavor etc., free from environmental pollution, guaranteed the thermal efficiency of biomass fuel gas firing. Device of the present invention has removal The effect of the tar in the biological fuel gas, flying dust, steam and peculiar smell is remarkable, has guaranteed the biological fuel gas combustion The thermal efficiency that burns; Compact conformation, the characteristics such as aerogenesis is effective.

Claims (10)

1, a kind of preparation method of biological fuel gas packs the raw material of biomass into and carries out pyrolysis in the aerogenesis chamber, generates mixed gas; It is characterized in that: the tar in the mixed gas that generates after the pyrolysis is carried out cracking and generates inflammable gas, and flying dust is filtered; Again inflammable gas is carried out gas-water separation, isolate the moisture in the inflammable gas; The inflammable gas of isolating moisture is eliminated the unusual smell again, and the inflammable gas after eliminating the unusual smell is just available;
Its technical process is:
Step 1, pyrolysis-→ step 2, coke tar cracking-→ step 3, dewater-→ step 4, eliminate the unusual smell;
Step 1, pyrolysis: raw material is sent in the aerogenesis chamber, carried out pyrolysis, generate air mixture;
Step 2, coke tar cracking: with the tar in the pyrogenous origin mixed gas repeatedly cracking generate inflammable gas, and filter out the flying dust in the mixed gas; Entering the sorbent material that blocks water again dewaters first, the sorbent material that blocks water at first is incubated the catalyst for cracking of its below and makes the catalyst for cracking temperature rise to the coke tar cracking temperature to make coke tar cracking, when temperature constantly is increased to manifesting suddenly of the sorbent material hydrophobic nature that blocks water, water vapour in the inflammable gas is blocked water, and the sorbing material prevention is passed through and formation water, this water flows downward under action of gravity and constantly washes away tar on the cleaving layer and the flying dust biomass material below entering, the raw material that has tar constantly moves downward and enters the high-temperature zone cracking, and said process goes round and begins again and carries out repeatedly; Inflammable gas after dewatering first enters and subtracts smelly filtering medium and enter first and eliminate the unusual smell;
Step 3, dewater: will filter combustion gas after the cracking and carry out once more gas-water separation and remove residual water-content in the combustion gas;
Step 4, eliminate the unusual smell: peculiar smell is removed in the combustion gas that will remove behind the moisture once more; Combustion gas behind the removal peculiar smell is just available.
2, the preparation method of biological fuel gas according to claim 1, it is characterized in that the described sorbent material that blocks water is a kind of Mg-bearing water aluminosilicate secondary mineral and mixes common nickel-base catalyst, the proportioning of Mg-bearing water aluminosilicate secondary mineral and nickel-base catalyst is 6.5-7.5: 2.5-3.5.
3, the preparation method of biological fuel gas according to claim 1 is characterized in that described to subtract smelly filtering medium be porphyrite class natural materials.
4, the preparation facilities of the described biological fuel gas of a kind of claim 1, include base (1), aerogenesis chamber (2), storage compartment (3), it is characterized in that also including cracking and catalyzing resorber (4), air water separator (5), subtract smelly expansion box (6), aerogenesis chamber (2) is fixed on the base (1), storage compartment (3) is fixed on the upside of aerogenesis chamber (2), and be communicated with aerogenesis chamber (2), cracking and catalyzing resorber (4) is fixed on the upside of storage compartment (3), and be communicated with storage compartment (3), cracking and catalyzing resorber (4) is communicated with air water separator (5) by pipeline, air water separator (5) by pipeline with subtract smelly expansion box (6) and be communicated with.
5, the preparation facilities of biological fuel gas according to claim 2, it is characterized in that: the perisporium of aerogenesis chamber (2) is provided with cyclic water jacket (21), cyclic water jacket is connected with the round-robin cooling fluid in (21), the middle part of aerogenesis chamber (2) is provided with eccentric swage (22), the bottom of aerogenesis chamber (2) is provided with feeder (23), be provided with flow-controlled device (24) in the bottom of aerogenesis chamber (2), eccentric swage (22) end is provided with capable of opening and closing binder head.
6, the preparation facilities of biological fuel gas according to claim 5, it is characterized in that: described feeder (23) includes motor (75), transmission mechanism (76), crawler belt (73), sprocket wheel (71), carrying roller (72), driving lever (74), sprocket wheel (71) is 2, motor (75), transmission mechanism (76) is arranged on the outside, aerogenesis chamber (2), crawler belt (73), sprocket wheel (71), carrying roller (72), driving lever (74) is arranged on inboard, aerogenesis chamber (2), motor (75) is connected with wherein 1 sprocket wheel (71) by transmission mechanism (76), crawler belt (73) is installed on the sprocket wheel (71), and being provided with carrying roller (72), driving lever (74) is fixed on the crawler belt (73).
7, the preparation facilities of biological fuel gas according to claim 5 is characterized in that: the blower fan of aerogenesis chamber (2) is provided with blower fan sound damper (9), and the blower fan sound damper is equipped with quieter material in (9).
8, the preparation facilities of biological fuel gas according to claim 2, it is characterized in that: described cracking and catalyzing resorber (4) includes three layers: be followed successively by cracking and catalyzing layer (43), the adsorption layer that blocks water (42) from the bottom to top, subtract smelly filtering layer (41), the cracking and catalyzing layer is placed with catalyst for cracking in (43), blocking water is placed with the sorbent material that blocks water in the adsorption layer (42), subtracts to be placed with in the smelly filtering layer (41) to subtract smelly filtering medium.
9, the preparation facilities of biological fuel gas according to claim 2, it is characterized in that: described air water separator (5) includes separator shell, heat exchanger (51), heat exchanger (51) is fixed in the separator shell, the import of heat exchanger (51) is communicated with cracking and catalyzing resorber (4), the outlet of heat exchanger (51) with subtract smelly expansion box (6) and be communicated with, in the separator shell, the outside of heat exchanger (51) is connected with recirculated cooling water.
10, the preparation facilities of biological fuel gas according to claim 2, it is characterized in that: the described smelly expansion box (6) that subtracts includes two layers up and down, lower floor is reservoir bed (61), the upper strata is for subtracting smelly layer (62), subtract to be placed with in the smelly layer (62) and subtract smelly filtering medium and be provided with division board (66), subtracting smelly layer (62) is communicated with reservoir bed (61), the top of reservoir bed (61) is provided with the inlet mouth (63), the bottom that are communicated with air water separator (5) and is provided with water port (64), subtracts smelly layer (62) and is provided with gas outlet (65).
CNA2008100150978A 2008-04-07 2008-04-07 Process and apparatus for producing biomass gas CN101294085A (en)

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US8524087B2 (en) 2009-12-23 2013-09-03 Uop Llc Low metal, low water biomass-derived pyrolysis oils and methods for producing the same
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