CN104445187A - Method for recycling waste crop straw - Google Patents
Method for recycling waste crop straw Download PDFInfo
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- CN104445187A CN104445187A CN201410614705.2A CN201410614705A CN104445187A CN 104445187 A CN104445187 A CN 104445187A CN 201410614705 A CN201410614705 A CN 201410614705A CN 104445187 A CN104445187 A CN 104445187A
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- 239000010902 straw Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- 238000004064 recycling Methods 0.000 title abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 28
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 8
- 235000017060 Arachis glabrata Nutrition 0.000 claims abstract description 7
- 244000105624 Arachis hypogaea Species 0.000 claims abstract description 7
- 235000010777 Arachis hypogaea Nutrition 0.000 claims abstract description 7
- 235000018262 Arachis monticola Nutrition 0.000 claims abstract description 7
- 239000001888 Peptone Substances 0.000 claims abstract description 7
- 108010080698 Peptones Proteins 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 235000020232 peanut Nutrition 0.000 claims abstract description 7
- 235000019319 peptone Nutrition 0.000 claims abstract description 7
- 238000010563 solid-state fermentation Methods 0.000 claims abstract description 7
- 244000068988 Glycine max Species 0.000 claims abstract description 4
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 4
- 240000007594 Oryza sativa Species 0.000 claims abstract description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 4
- 241000209140 Triticum Species 0.000 claims abstract description 4
- 235000021307 Triticum Nutrition 0.000 claims abstract description 4
- 240000008042 Zea mays Species 0.000 claims abstract description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 4
- 235000009566 rice Nutrition 0.000 claims abstract description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 3
- 235000005822 corn Nutrition 0.000 claims abstract description 3
- 230000004913 activation Effects 0.000 claims description 28
- 238000000855 fermentation Methods 0.000 claims description 26
- 230000004151 fermentation Effects 0.000 claims description 26
- 238000003763 carbonization Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 235000015099 wheat brans Nutrition 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 239000001103 potassium chloride Substances 0.000 abstract 2
- 235000011164 potassium chloride Nutrition 0.000 abstract 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000010000 carbonizing Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000010903 husk Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000003337 fertilizer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000002054 inoculum Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- -1 beast bone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010907 stover Substances 0.000 description 1
Classifications
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- 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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a method for recycling waste crop straw. The method comprises the following steps: (1) smashing crop straw, namely cutting the crop straw into sections, and blasting at the pressure of 0.2-2.0MPa for 0.5-1 minute with steam, wherein each section of the crop straw has a length of 3-15cm; (2) fermenting, namely adding ammonia, peptone, bran and chopped peanut shells into the blasted crop straw sections, regulating the molar ratio of carbon to nitrogen (C to N) to 20:30, adding activated sludge from a methane-generating pit, and carrying out solid state fermentation at a temperature of 20-55 DEG C for 10-20 days until combustible gases are generated; and (3) squeezing fermented waste residue to remove part of water, mixing with unfermented smashed crop straw, phosphoric acid or potassium chloride, drying a mixture until water left therein is not more than 10%, molding by extruding, carbonizing, activating with steam, cooling, and smashing to obtain activated carbon, wherein the raw materials molded by extruding contain 90-95% of fermented waste residue, 5-10% of unfermented smashed crop straw, 1-5% of phosphoric acid or potassium chloride and the balance of water, and the crop straw is wheat straw, rice straw, corn straw or soybean straw.
Description
Technical field
The present invention relates to a kind of farm crop to give up stalk resource method.
Background technology
China is a large agricultural country, vast rural area every harvest season, all can produce a large amount of straws.The blue or green shape year people of major part due to rural area all goes down town manuals labour, and lack of labor, greatly, the stalk recycle value of recovery is low, have to directly burn in field for straw recovery operation amount.Due to the smog that crop straw burning causes, aircraft can not be landed, and expressway traffic accident takes place frequently, air severe contamination, causes the anxious increasing of respiratory tract disease.In order to prohibit burning stalk, governments at all levels all take great effort every year and check burning severely.Country all drops into substantial contribution every year, promotes gasifying stalk and stalk marsh gas technology.
Utilize the prior art of crop straws for producing biogas a lot, such as China Patent No. " 200810141177.8 " discloses a kind of technique utilizing stalk dry fermentation to produce biogas, publication date is on 01 07th, 2009, the steps include: one, with pulverizer by crushed stalk to 2-8mm, two, crushed straw aggregate is delivered to pretreatment pool through transfer roller, and in pretreatment pool, add the hot water of 40-53 DEG C and stover ferment agent carries out pre-treatment, the natural pond liquid of the crushed straw aggregate of pretreatment pool and anaeroic digestor backflow, in the ratio mixing of 2: 1, after stirring, stalk feed liquid solid content is 20-35%, three, with sludge pump, stalk feed liquid is transported in anaeroic digestor top equally, leavening temperature is 40-53 DEG C, four, the biogas of fermentation generation, is clean fuel through gas-liquid separation, purification.
At present, China's agricultural environment pollution is more and more serious, the health of the serious threat mankind.One be agricultural crop straw, husk after paddy processing burned in a large number, although national departments concerned repeatedly hereafter forbids crop straw burning, husk, but because the stalk in rural area, husk purposes are limited, therefore tired taboo is more than, still a large amount of stalks, husk is had to be burned every year, severe contamination atmospheric environment.Two is that undressed fowl and animal excrement enters rivers and lakes arbitrarily, causes water quality dirty, and biochemical oxygen demand (BOD) (BOD) load increases, and threatens the existence of fish, shellfish and algae; Meanwhile, agricultural wastes pollute irrigation water, make the ammonia nitrogen in water and protein nitrogen content too high, produce excessive nitrate in underground aquifers, damage to crops grows, and multiplies a large amount of fly and other insects, serious harm human health.Three is China's plant husbandry due to excessive use chemical fertilizer and agricultural chemicals for these years, causes that soil compaction, soil fertility decline, disease and pest is rampant, agricultural environment is polluted.How fully utilizing stalk, husk, fowl and animal excrement, turn waste into wealth, is the difficult problem that current Production of manure industry and environmental protection industry are paid close attention to jointly.In recent years, some fertiliser production enterprises start to utilize stalk, paddy to develop fertilizer, and after this kind of Term Fertilization, a large amount of organic matters both effectively can improve soil, avoided peasant excessively to use chemical fertilizer and caused soil compaction, can improve agricultural environment pollution again.
Limited petroleum resources are the needs can not containing the negative Motor vehicles day by day increased.Along with the powerful increase of mechanize.In the near future, the petroleum resources that the earth is limited are by depleted., the fuel oil of supplying machine motor vehicle not only undertaken by oil.But also to wear the clothes etc. not as good as the industrial chemicals widely replaced and more than 6,000,000,000 people will be born.Occurred crude oil alert signals now, fuel price has exceeded the price than people's imagination, and it is many to have exceeded edible oil price.This just imply that to rely on oil and store not abundant Sweet natural gas and relies on that to pay the energy that expensive foreign exchange import is Motor vehicles and heating, the main fuel of cooking is badly in need of exploitation new extremely urgent.Harvested crops straw is all used fire burning in vain by peasant.Not only reduce farmers' income, and cause Heavy environmental pollution, due to dense smoke sometimes cause major accident and closedown to motorway, aircraft cannot landing, the straw ash burnt when the weather having wind to blow, to resident and pedestrian and all cause considerable distress the peasant of farmland operation.Cause environmental pollution.Also waste resource.
Different according to purposes, wood, bamboo, shell, beast bone, mud coal, brown coal etc. can be used respectively as the raw material manufacturing gac.Usually, using wood chip, charcoal as main raw material, gac per ton need consume about 4 cubic metres, timber, and along with timber resources increasingly in short supply, the manufacturing cost of gac is constantly increased, and in addition, the producer of China's citric acid fermented with dry sweet potato about produces 10 ~ 12.5 ten thousand tons, waste residue every year, not yet there is desirable treatment process at present, cause environmental pollution.。
Summary of the invention
The object of the invention is to propose a kind of farm crop to give up stalk resource method.
For reaching this object, the present invention by the following technical solutions:
A kind of farm crop are given up stalk resource method: it is characterized in that comprising the steps:
(1), the pulverizing of stalk, stalk being cut into length is 3-15cm, carries out steam explosion, and condition is 0.2-2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 0.5-1min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, peanut end, and adjustment C/N is 20-30 (mol ratio), then accesses the activated sludge in methane-generating pit; Leavening temperature is 20-55 DEG C, and fermentation period is 10-20 days; Produce inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content≤10%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac;
In the raw material of extrusion molding: the waste residue after fermentation is 90-95%; Unfermentable crushing straw is 5-10%; Phosphoric acid or Repone K 1-5%; Surplus is water; Described stalk is the agricultural crop straws such as wheat, paddy rice, corn, soybean.
In carbonization, carbonization condition is that carbonization temperature controls at 600-800 DEG C, and the time is 30-60 minute.
Steam activation step adopts fixed-bed type activation furnace, and insert in activation furnace by the raw material after carbonization, activation temperature is 400-500 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
The beneficial effect of the application is:
Take full advantage of agricultural crop straw, do not produce refuse;
Utilize gas explosion technology team stalk to carry out pre-treatment, stalk fibre structure generating portion is decomposed, and be conducive to the growth of methanogen, methane phase efficiency is high;
The charcoal absorption efficiency obtained by point inventive method is high, may be used for the field such as medicine, environmental protection.
Embodiment
Embodiment 1
(1), the pulverizing of stalk, stalk being cut into length is 3cm, carries out steam explosion, and condition is 2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 1min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, peanut end, regulate C/N to be 30 (mol ratios), then access the activated sludge in methane-generating pit, inoculum size is 20% of stalk weight; Leavening temperature is 55 DEG C, and fermentation period is 10 days, and solid-to-liquid ratio is 1: 3-1: 6; Produce inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content 4%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac;
In the raw material of extrusion molding: the waste residue after fermentation is 90%; Unfermentable crushing straw is 5%; Phosphoric acid or Repone K 1%; Described stalk is wheat stalk.
2. method according to claim 1, is characterized in that: in carbonization, carbonization condition is that carbonization temperature controls at 800 DEG C, and the time is 60 minutes.Activation temperature is 500 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
Embodiment 2
(1), the pulverizing of stalk, stalk being cut into length is 15cm, carries out steam explosion, and condition is 2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 1min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, peanut end, regulate C/N to be 20 (mol ratios), then access the activated sludge in methane-generating pit, inoculum size is 30% of stalk weight; Leavening temperature is 20 DEG C, and fermentation period is 20 days, produces inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content 5%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac; In the raw material of extrusion molding: the waste residue after fermentation is 90%; Unfermentable crushing straw is 5%; Phosphoric acid or Repone K 1%; Surplus is water; Described stalk is maize straw.In carbonization, carbonization condition is that carbonization temperature controls at 600 DEG C, and the time is 60 minutes.Activation temperature is 400 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
Embodiment 3
(1), the pulverizing of stalk, stalk being cut into length is 10cm, carries out steam explosion, and condition is 2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 1min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, and peanut end, regulates C/N to be 25 (mol ratios), then accesses the activated sludge in methane-generating pit; Leavening temperature is 37 DEG C, and fermentation period is 15 days; Produce inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content 1%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac; In the raw material of extrusion molding: the waste residue after fermentation is 90%; Unfermentable crushing straw is 6%; Phosphoric acid or Repone K 4%; Surplus is water; Described stalk is soybean crop stalk.In carbonization, carbonization condition is that carbonization temperature controls at 800 DEG C, and the time is 360 minutes.Steam activation step adopts fixed-bed type activation furnace, and insert in cremator by the raw material after carbonization, activation temperature is 500 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
Embodiment 4
(1), the pulverizing of stalk, stalk being cut into length is 12cm, carries out steam explosion, and condition is 2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 0.5min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, and peanut end, regulates C/N to be 25 (mol ratios), then accesses the activated sludge in methane-generating pit; Leavening temperature is 37 DEG C, and fermentation period is 15 days; Produce inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content 1%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac; In the raw material of extrusion molding: the waste residue after fermentation is 90%; Unfermentable crushing straw is 6%; Phosphoric acid or Repone K 4%; Surplus is water; Described stalk is paddy rice agricultural crop straw.In carbonization, carbonization condition is that carbonization temperature controls at 800 DEG C, and the time is 360 minutes.Steam activation step adopts fixed-bed type activation furnace, and insert in cremator by the raw material after carbonization, activation temperature is 500 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
Claims (3)
1. farm crop are given up stalk resource method: it is characterized in that comprising the steps:
(1), the pulverizing of stalk, stalk being cut into length is 3-15cm, carries out steam explosion, and condition is 0.2-2.0MPa, and the dimension pressure time is the quick-fried process of vapour under the condition of 0.5-1min;
(2), ferment, carry out solid state fermentation bar after the quick-fried process of vapour, fermentation part is: add ammoniacal liquor, peptone, wheat bran, peanut end, and adjustment C/N is 20-30 (mol ratio), then accesses the activated sludge in methane-generating pit; Leavening temperature is 20-55 DEG C, and fermentation period is 10-20 days; Produce inflammable gas;
(3), by the waste residue extruding remove portion moisture after fermentation, mix with unfermentable crushing straw, phosphoric acid and Repone K; Be dried to moisture content≤10%, then extrusion molding, charing, steam activation, pulverize after cooling and obtain gac;
In the raw material of extrusion molding: the waste residue after fermentation is 90-95%; Unfermentable crushing straw is 5-10%; Phosphoric acid or Repone K 1-5%; Surplus is water; Described stalk is the agricultural crop straws such as wheat, paddy rice, corn, soybean.
2. method according to claim 1, is characterized in that: in carbonization, carbonization condition is that carbonization temperature controls at 600-800 DEG C, and the time is 30-60 minute.
3. method according to claim 1, is characterized in that: steam activation step adopts fixed-bed type activation furnace, and insert in activation furnace by the raw material after carbonization, activation temperature is 400-500 DEG C, and entering activation furnace vapor pressure is 0.2MPa, soak time 20 minutes.
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| CN201410614705.2A CN104445187B (en) | 2014-11-04 | 2014-11-04 | A kind of crops are given up stalk resource method |
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| CN201410614705.2A CN104445187B (en) | 2014-11-04 | 2014-11-04 | A kind of crops are given up stalk resource method |
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Cited By (12)
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| CN105040146A (en) * | 2015-09-11 | 2015-11-11 | 江苏锦宇环境工程有限公司 | Preparing method for electrostatic spinning lignin/cellulose acetate nanometer composite material |
| CN105503298A (en) * | 2015-12-17 | 2016-04-20 | 梅庆波 | Method for recycling organic trash through wheat straw |
| CN105540689A (en) * | 2015-12-25 | 2016-05-04 | 常州大学 | Method for treating high-concentration ammonia-nitrogen wastewater by virtue of straws |
| CN105800889A (en) * | 2016-04-28 | 2016-07-27 | 农业部沼气科学研究所 | Method for producing methane by strengthening anaerobic dry fermentation of dehydrated sludge |
| CN106115692A (en) * | 2016-06-17 | 2016-11-16 | 山东建筑大学 | A kind of method utilizing hay silage straw to prepare microporous activated carbon |
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| CN107254791A (en) * | 2017-06-07 | 2017-10-17 | 常州中翔科技有限公司 | A kind of method of waste crop straws recycling |
| CN107644742A (en) * | 2017-10-31 | 2018-01-30 | 合肥工业大学 | A kind of method that biogas residue activated carbon prepares ultracapacitor after dry fermentation based on biomass anaerobic |
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| CN109294397A (en) * | 2018-09-28 | 2019-02-01 | 胡果青 | A kind of preparation method of rapid curing peel type anticorona varinish |
| CN110422836A (en) * | 2019-08-16 | 2019-11-08 | 江南大学 | A kind of porous carbon materials and its preparation method and application |
| CN111807606A (en) * | 2020-06-05 | 2020-10-23 | 中国科学院南京土壤研究所 | Method for preventing and controlling ammonia volatilization in fermentation process of cow dung sewage by using modified corncobs |
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| CN106744938A (en) * | 2016-12-17 | 2017-05-31 | 段清 | A kind of method that utilization bagasse produces decoloration active carbon high |
Citations (4)
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| CN111807606A (en) * | 2020-06-05 | 2020-10-23 | 中国科学院南京土壤研究所 | Method for preventing and controlling ammonia volatilization in fermentation process of cow dung sewage by using modified corncobs |
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