CN105419829B - A kind of method for being pyrolyzed witloof residue and preparing biogas - Google Patents
A kind of method for being pyrolyzed witloof residue and preparing biogas Download PDFInfo
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- CN105419829B CN105419829B CN201510648232.2A CN201510648232A CN105419829B CN 105419829 B CN105419829 B CN 105419829B CN 201510648232 A CN201510648232 A CN 201510648232A CN 105419829 B CN105419829 B CN 105419829B
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- 244000298479 Cichorium intybus Species 0.000 title claims abstract description 57
- 235000007542 Cichorium intybus Nutrition 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 41
- 238000000197 pyrolysis Methods 0.000 claims abstract description 37
- 239000002028 Biomass Substances 0.000 claims abstract description 33
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 229920001202 Inulin Polymers 0.000 claims abstract description 8
- JYJIGFIDKWBXDU-MNNPPOADSA-N inulin Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)OC[C@]1(OC[C@]2(OC[C@]3(OC[C@]4(OC[C@]5(OC[C@]6(OC[C@]7(OC[C@]8(OC[C@]9(OC[C@]%10(OC[C@]%11(OC[C@]%12(OC[C@]%13(OC[C@]%14(OC[C@]%15(OC[C@]%16(OC[C@]%17(OC[C@]%18(OC[C@]%19(OC[C@]%20(OC[C@]%21(OC[C@]%22(OC[C@]%23(OC[C@]%24(OC[C@]%25(OC[C@]%26(OC[C@]%27(OC[C@]%28(OC[C@]%29(OC[C@]%30(OC[C@]%31(OC[C@]%32(OC[C@]%33(OC[C@]%34(OC[C@]%35(OC[C@]%36(O[C@@H]%37[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O%37)O)[C@H]([C@H](O)[C@@H](CO)O%36)O)[C@H]([C@H](O)[C@@H](CO)O%35)O)[C@H]([C@H](O)[C@@H](CO)O%34)O)[C@H]([C@H](O)[C@@H](CO)O%33)O)[C@H]([C@H](O)[C@@H](CO)O%32)O)[C@H]([C@H](O)[C@@H](CO)O%31)O)[C@H]([C@H](O)[C@@H](CO)O%30)O)[C@H]([C@H](O)[C@@H](CO)O%29)O)[C@H]([C@H](O)[C@@H](CO)O%28)O)[C@H]([C@H](O)[C@@H](CO)O%27)O)[C@H]([C@H](O)[C@@H](CO)O%26)O)[C@H]([C@H](O)[C@@H](CO)O%25)O)[C@H]([C@H](O)[C@@H](CO)O%24)O)[C@H]([C@H](O)[C@@H](CO)O%23)O)[C@H]([C@H](O)[C@@H](CO)O%22)O)[C@H]([C@H](O)[C@@H](CO)O%21)O)[C@H]([C@H](O)[C@@H](CO)O%20)O)[C@H]([C@H](O)[C@@H](CO)O%19)O)[C@H]([C@H](O)[C@@H](CO)O%18)O)[C@H]([C@H](O)[C@@H](CO)O%17)O)[C@H]([C@H](O)[C@@H](CO)O%16)O)[C@H]([C@H](O)[C@@H](CO)O%15)O)[C@H]([C@H](O)[C@@H](CO)O%14)O)[C@H]([C@H](O)[C@@H](CO)O%13)O)[C@H]([C@H](O)[C@@H](CO)O%12)O)[C@H]([C@H](O)[C@@H](CO)O%11)O)[C@H]([C@H](O)[C@@H](CO)O%10)O)[C@H]([C@H](O)[C@@H](CO)O9)O)[C@H]([C@H](O)[C@@H](CO)O8)O)[C@H]([C@H](O)[C@@H](CO)O7)O)[C@H]([C@H](O)[C@@H](CO)O6)O)[C@H]([C@H](O)[C@@H](CO)O5)O)[C@H]([C@H](O)[C@@H](CO)O4)O)[C@H]([C@H](O)[C@@H](CO)O3)O)[C@H]([C@H](O)[C@@H](CO)O2)O)[C@@H](O)[C@H](O)[C@@H](CO)O1 JYJIGFIDKWBXDU-MNNPPOADSA-N 0.000 claims abstract description 8
- 229940029339 inulin Drugs 0.000 claims abstract description 8
- 238000010792 warming Methods 0.000 claims abstract description 8
- 239000011541 reaction mixture Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims abstract description 5
- 239000003610 charcoal Substances 0.000 claims abstract description 4
- 239000012265 solid product Substances 0.000 claims abstract description 3
- 238000000605 extraction Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000002440 industrial waste Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 240000008892 Helianthus tuberosus Species 0.000 description 4
- 235000003230 Helianthus tuberosus Nutrition 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- WJEIYVAPNMUNIU-UHFFFAOYSA-N [Na].OC(O)=O Chemical compound [Na].OC(O)=O WJEIYVAPNMUNIU-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of method for being pyrolyzed witloof residue and preparing biogas, include the following steps：(1) to witloof slag drying process；(2) dried witloof slag is mixed with pyrolysis catalysts, obtains reaction mixture, the pyrolysis catalysts are iron oxide and the mixture of sodium carbonate；(3) reaction mixture is placed in reaction kettle, is warming up to 400~700 DEG C with 20~50 DEG C/min, is pyrolyzed 0.1~3h；(4) the separating biomass charcoal from solid product, the separating biomass gas from gas-phase product.The present invention effectively reduces the waste discharge in inulin production process, protects natural environment, reduces the energy consumption of witloof slag pyrolysis, and the biogas calorific value of production is high, is adapted to promote and apply.
Description
Technical field
The invention belongs to biomass energy technology field, and in particular to a kind of side for being pyrolyzed witloof residue and preparing biogas
Method.
Background technology
With the fast development of world economy, the depletion rate of energy resources also increases rapidly, and coal, oil, natural gas
Deng traditional fossil energy resource increasingly depleted, the mankind are existing to supplement and substitute there is an urgent need to develop reproducible energy resources
Fossil energy.Biomass energy is subject to attention both domestic and external, is considered as after coal as important environmental-friendly regenerative resource
The fourth largest source after charcoal, oil and natural gas.
Biomass material can be converted into the gaseous fuel based on CO and H by biomass pyrogenation gasification, can directly change reality
The supply of existing combustion gas, thermal energy and electric energy.Combustion gas at the same time can be by methanation, and then prepares high-quality biological matter synthetic natural gas
(Bio-SNG), is the important technology approach of biomass energy exploitation.China's Biomass Energy Resources reserves are huge, only agricultural crop straw
About 700,000,000 t/a, equivalent standard coal are about 300,000,000 t/a；The whole nation can provide 3.3 hundred million t forests biology every year, equivalent to the standard of 200,000,000 t
Coal.Fired as can these biomass resources are converted into gas by pyrolytic gasification, substantial amounts of fossil energy can be substituted, alleviate me
Interdependency of the state to conventional energy resource.Meanwhile biomass utilization is a part for the carbon cycle of nature, during realize CO's
Zero-emission, belongs to renewable clean fuel.
The hot research topic that become international, state are studied in the 1970s, the utilization of biomass energy
The scientific research personnel of outer especially developed country has done substantial amounts of work in association area.There is biomass power generation plant more than 350 in the U.S.,
Paper pulp, paper product processing factory and other forestry products processing factories are distributed in, main research uses biomass combined cycle generation (B/
IGCC), the total installation of generating capacity of biomass power generation has reached more than 10000M, single-machine capacity up to 10~25MW, power generation total amount
More than 40%, the 4% of primary energy consumption amount of U.S.'s renewable energy power generation installation.Germany possesses 140 multiple regions at present
The biomass of cogeneration of heat and power, has nearly 80 in planning and designing or builds rank, mattress Bell spy energy company (Im bert E in addition
Nergietechnik GM B H) one oil-electric engine system of the down-draft type gasifying furnace system that manufactures and designs, gasification efficiency is reachable
60%-90%, fuel gases calorific value are 1.7 ten thousand~2.5 ten thousand Kj/m.Finland is raw using forest trimmings, papermaking waste etc. in the world
One of most successful country of material power generation, Foster Weiler company is the energy company of Finland's maximum, is mainly processed using timber
Industry, the discarded object of paper-making industry are fuel, and for the maximum water content of discarded object up to 60%, the thermal efficiency of unit is made up to 88%
The Technology of Circulating Fluidized Bed Boiler of the biomass burning made is first, it is possible to provide the biomass power generation power of the assembling unit be 3-47M.Sweden
The planning that cogeneration of heat and power is carried out using its abundant biomass is being carried out with Denmark, biomass energy is being provided high-grade electric energy
While, meet the requirement of heat supply, in the energy that Sweden's district heating and cogeneration of heat and power are consumed, biomass energy ratio has surpassed
Cross 26%E5J.
Since the main component of jerusalem artichoke, witloof residue is biomass, being translated into by the method for being pyrolyzed or gasifying can
Combustion gas body will be utilized active ingredient, while also can effectively solve to rot to make formed environmental pollution.But jerusalem artichoke, witloof are residual
Slag moisture content is higher, carries out depth drying to it with conventional pyrolytic technique, energy consumption is excessive.For this reason, it may be necessary to provide a kind of new pyrolysis
Technique effectively disposes jerusalem artichoke, witloof biomass residue realizes energy conservation and environmental protection.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of method for being pyrolyzed witloof residue and preparing biogas.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of method for being pyrolyzed witloof residue and preparing biogas, includes the following steps：
(1) to witloof slag drying process；
(2) dried witloof slag is mixed with pyrolysis catalysts, obtains reaction mixture, the pyrolysis catalysts are
The mixture of iron oxide and sodium carbonate；
(3) reaction mixture is placed in reaction kettle, is warming up to 400~700 DEG C with 20~50 DEG C/min, pyrolysis 0.1
~3h；
(4) the separating biomass charcoal from solid product, the separating biomass gas from gas-phase product.
In step (1), the witloof slag is to utilize the industrial waste rich in biomass remaining after witloof extraction inulin.
In step (1), the drying process is divided into two stages, and the first stage first extrudes witloof slag, makes chrysanthemum
Lettuce pulp water point is reduced to less than 70%, and second stage utilizes superheat steam drying, makes the moisture near less than 50% of witloof slag.
In step (2), the mixed proportion of witloof slag and pyrolysis catalysts is 10:0.1~2, witloof slag and pyrolysis catalysts
Mixed proportion preferably 10:0.5~1, most preferably 10:0.5.
In step (2), the ratio of iron oxide and sodium carbonate is 3 in the mixture of the iron oxide and sodium carbonate:1.
In step (3), the pressure in reaction kettle is 1.5~2MPa.
In step (3), 450 DEG C are warming up to 35 DEG C/min, is pyrolyzed 30min.
The medium temperature flue gas produced in step (3) reaction kettle is used as to the heat source of the drying process in step (1) to witloof slag.
Beneficial effect：
(1) effectively reduced useless in the present invention by carrying out pyrolysis processing to witloof slag remaining in inulin production process
Thing discharges, and protects natural environment.
(2) present invention effectively reduces energy consumption in witloof slag drying process by two step seasonings.
(3) present invention adds iron oxide and two kinds of catalyst of sodium carbonate in witloof slag pyrolytic process, effectively increases
The pyrolysis efficiency of witloof slag.
(4) present invention also proposes to utilize the medium temperature flue gas recirculation in reaction kettle, further reduces the energy in pyrolytic process
Source consumes, and is conducive to energy-saving and emission-reduction.
Embodiment
According to following embodiments, the present invention may be better understood.It is however, as it will be easily appreciated by one skilled in the art that real
Apply the described content of example and be merely to illustrate the present invention, without sheet described in detail in claims should will not be limited
Invention.
Since the main component of jerusalem artichoke, witloof residue is biomass, being translated into by the method for being pyrolyzed or gasifying can
Combustion gas body will be utilized active ingredient, while also can effectively solve to rot to make formed environmental pollution.
Embodiment 1：Influence of the pyrolysis catalysts to pyrolysis efficiency.
(1) using witloof extraction inulin, obtained witloof slag, extrudes it first with plate and frame filter press, makes witloof slag
Moisture is reduced to less than 70%, then using superheat steam drying, when witloof slag moisture near less than 50%.
(2) dried witloof slag is mixed with pyrolysis catalysts, pyrolysis catalysts are the mixing of iron oxide and sodium carbonate
Thing presses 1:The mixed proportion of 3 mixing, witloof slag and pyrolysis catalysts is as shown in table 1.
(3) in a kettle, 450 DEG C being warming up to 35 DEG C/min, is pyrolyzed 0.5h, the pressure in reaction kettle is 1.5MPa,
Obtained biomass carbon and the performance detection of biogas is as shown in the table：
Influence of 1 pyrolysis catalysts of table to pyrolysis efficiency
Embodiment 2：Influence of the pyrolysis temperature to pyrolysis efficiency.
(1) using witloof extraction inulin, obtained witloof slag, extrudes it first with plate and frame filter press, makes witloof slag
Moisture is reduced to less than 70%, then using superheat steam drying, when witloof slag moisture near less than 50%.
(2) dried witloof slag and pyrolysis catalysts are pressed 10:0.5 mixing, pyrolysis catalysts are iron oxide and carbonic acid
Sodium presses 1:3,.
(3) in a kettle, 400~700 DEG C are warming up to 35 DEG C/min, are pyrolyzed 0.5h, the pressure in reaction kettle is
The biomass carbon and the performance detection of biogas that 1.5MPa is obtained are as shown in the table：
Influence of 2 pyrolysis temperature of table to pyrolysis efficiency
Embodiment 3：Influence of the pyrolysis time to pyrolysis efficiency.
(1) using witloof extraction inulin, obtained witloof slag, extrudes it first with plate and frame filter press, makes witloof slag
Moisture is reduced to less than 70%, then using superheat steam drying, when witloof slag moisture near less than 50%.
(2) dried witloof slag and pyrolysis catalysts are pressed 10:0.5 mixing, pyrolysis catalysts are iron oxide and carbonic acid
Sodium presses 1:3,.
(3) in a kettle, 450 DEG C are warming up to 35 DEG C/min, are pyrolyzed 0.5~3h, the pressure in reaction kettle is
The biomass carbon and the performance detection of biogas that 1.5MPa is obtained are as shown in the table：
Influence of 3 pyrolysis temperature of table to pyrolysis efficiency
Embodiment 4：Influence of the synthesis pressure to pyrolysis efficiency.
(1) using witloof extraction inulin, obtained witloof slag, extrudes it first with plate and frame filter press, makes witloof slag
Moisture is reduced to less than 70%, then using superheat steam drying, when witloof slag moisture near less than 50%.
(2) dried witloof slag and pyrolysis catalysts are pressed 10:0.5 mixing, pyrolysis catalysts are iron oxide and carbonic acid
Sodium presses 1:3,.
(3) in a kettle, 450 DEG C are warming up to 35 DEG C/min, are pyrolyzed 0.5~3h, the pressure in reaction kettle for 1.5~
The biomass carbon and the performance detection of biogas that 2MPa is obtained are as shown in the table：
Influence of 4 synthesis pressure of table to pyrolysis efficiency
Claims (1)
- A kind of 1. method for being pyrolyzed witloof residue and preparing biogas, it is characterised in that include the following steps：(1) to witloof slag drying process；(2) dried witloof slag is mixed with pyrolysis catalysts, obtains reaction mixture, the pyrolysis catalysts are oxidation The mixture of iron and sodium carbonate；(3) reaction mixture is placed in reaction kettle, is warming up to 450 DEG C with 35 DEG C/min, is pyrolyzed 30min；(4) the separating biomass charcoal from solid product, the separating biomass gas from gas-phase product；In step (2), the mixing quality ratio of witloof slag and pyrolysis catalysts is 10:0.1~2；In step (2), the mass ratio of iron oxide and sodium carbonate is 3 in the mixture of the iron oxide and sodium carbonate:1；In step (3), the pressure in reaction kettle is 1.5~2MPa；In step (1), the witloof slag is to utilize the industrial waste rich in biomass remaining after witloof extraction inulin；In step (1), the drying process is divided into two stages, and the first stage first extrudes witloof slag, makes witloof slag Moisture is reduced to less than 70%, and second stage utilizes superheat steam drying, the moisture of witloof slag is down to less than 50%；The medium temperature flue gas produced in step (3) reaction kettle is used as to the heat source of the drying process in step (1) to witloof slag.
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| CN105419829B true CN105419829B (en) | 2018-05-11 |
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| CN109097077A (en) * | 2018-10-19 | 2018-12-28 | 上海理工大学 | A kind of method of CO yield in reduction catalytic pyrolysis of biomass |
| CN110699141B (en) * | 2019-10-10 | 2021-08-20 | 中南大学 | A chain grate-rotary kiln injects biomass fuel and its preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0221679A2 (en) * | 1985-10-04 | 1987-05-13 | Arizona Board Of Regents | Process of producing liquid hydrocarbon fuels from biomass |
| CN101264879A (en) * | 2008-04-22 | 2008-09-17 | 东南大学 | A kind of preparation method of biomass conductive carbon |
| CN102574114A (en) * | 2009-04-22 | 2012-07-11 | 科伊奥股份有限公司 | Controlled activity pyrolysis catalysts |
| CN104194808A (en) * | 2014-08-08 | 2014-12-10 | 南京理工大学 | Method for catalytic pyrolysis of rice hulls |
-
2015
- 2015-10-09 CN CN201510648232.2A patent/CN105419829B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0221679A2 (en) * | 1985-10-04 | 1987-05-13 | Arizona Board Of Regents | Process of producing liquid hydrocarbon fuels from biomass |
| CN101264879A (en) * | 2008-04-22 | 2008-09-17 | 东南大学 | A kind of preparation method of biomass conductive carbon |
| CN102574114A (en) * | 2009-04-22 | 2012-07-11 | 科伊奥股份有限公司 | Controlled activity pyrolysis catalysts |
| CN104194808A (en) * | 2014-08-08 | 2014-12-10 | 南京理工大学 | Method for catalytic pyrolysis of rice hulls |
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