CN108059516A - Formula, production method and the system of the carbon-based compound organic and inorganic fertilizer of biology - Google Patents
Formula, production method and the system of the carbon-based compound organic and inorganic fertilizer of biology Download PDFInfo
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- CN108059516A CN108059516A CN201710667777.7A CN201710667777A CN108059516A CN 108059516 A CN108059516 A CN 108059516A CN 201710667777 A CN201710667777 A CN 201710667777A CN 108059516 A CN108059516 A CN 108059516A
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- lignite
- mother liquor
- inorganic
- supply system
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 13
- 150000001875 compounds Chemical class 0.000 title abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 12
- 239000003895 organic fertilizer Substances 0.000 title abstract 2
- 239000003077 lignite Substances 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 77
- 238000012216 screening Methods 0.000 claims abstract description 61
- 239000012452 mother liquor Substances 0.000 claims abstract description 49
- 238000005469 granulation Methods 0.000 claims abstract description 46
- 230000003179 granulation Effects 0.000 claims abstract description 46
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000004220 glutamic acid Substances 0.000 claims abstract description 39
- 235000013922 glutamic acid Nutrition 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 239000011344 liquid material Substances 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 20
- 229910010272 inorganic material Inorganic materials 0.000 claims description 53
- 239000002245 particle Substances 0.000 claims description 42
- 238000003860 storage Methods 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 30
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 19
- 239000011343 solid material Substances 0.000 claims description 18
- 230000004913 activation Effects 0.000 claims description 16
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 16
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 16
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 16
- 239000006012 monoammonium phosphate Substances 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 13
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 13
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 13
- 229910021538 borax Inorganic materials 0.000 claims description 13
- 239000004202 carbamide Substances 0.000 claims description 13
- 239000011790 ferrous sulphate Substances 0.000 claims description 13
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 13
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 13
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 13
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 13
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 13
- 239000001103 potassium chloride Substances 0.000 claims description 13
- 235000011164 potassium chloride Nutrition 0.000 claims description 13
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 13
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 13
- 235000011151 potassium sulphates Nutrition 0.000 claims description 13
- 239000004328 sodium tetraborate Substances 0.000 claims description 13
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012190 activator Substances 0.000 claims description 9
- 230000003213 activating effect Effects 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 238000002203 pretreatment Methods 0.000 abstract 3
- 238000012797 qualification Methods 0.000 abstract 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 17
- 239000004021 humic acid Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 235000015097 nutrients Nutrition 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- 239000011591 potassium Substances 0.000 description 7
- 229910052700 potassium Inorganic materials 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 235000002595 Solanum tuberosum Nutrition 0.000 description 5
- 244000061456 Solanum tuberosum Species 0.000 description 5
- 239000011573 trace mineral Substances 0.000 description 5
- 235000013619 trace mineral Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 241000244203 Caenorhabditis elegans Species 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 235000013601 eggs Nutrition 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of formula, production method and the system of the carbon-based compound organic and inorganic fertilizer of biology, formula includes lignite, glutamic acid mother liquor, inorganic component；Its method includes：(1) pre-treatment of lignite, the pre-treatment of (2) inorganic component, the pre-treatment of (3) liquid material, (4) stir, (5) are granulated, (6) drying, (7) cool down, (8) screening；Its system includes lignite supply system, inorganic component supply system, liquid material supply system and system of processing.It is an advantage of the current invention that a great number of elements of the present invention and microelement match are reasonable, improve crop growing state, the output capacity for improving crop is high；Fertilizer efficiency is long；Liquid phase material of the glutamic acid mother liquor concentration as granulation, on the one hand solves the glutamic acid mother liquor processing pressure of fermenting and producing enterprise, and the organic matter being on the other hand effectively utilized in glutamic acid mother liquor has saved production cost；Design is scientific and reasonable for the system, reduces the waste of material, and product output qualification rate is high.
Description
The technical field is as follows:
the invention relates to the field of fertilizer production, in particular to a formula, a production method and a system of a biochar-based organic-inorganic compound fertilizer.
Background art:
the organic-inorganic compound fertilizer is a compound fertilizer containing both organic matters and a proper amount of chemical fertilizers, has the characteristics of rich organic matters, balanced nitrogen, phosphorus and potassium content, high nitrogen, phosphorus and potassium absorption efficiency and the like, and has higher and higher utilization rate in recent years.
Carbon, hydrogen and oxygen are generally considered as the elements with the largest demand for crops, but because the three elements can be provided by the atmosphere and water, people generally do not specially apply the three elements, but use nitrogen, phosphorus and potassium as major elements. However, according to long-term field planting tracking data, the field soil is generally lack of carbon elements, and due to long-term shortage of the carbon elements, nutrient imbalance of crops is caused, absorption efficiency of nitrogen, phosphorus and potassium is affected, and finally the problems of poor growth vigor and low yield of the crops are caused.
The invention content is as follows:
the first purpose of the invention is to provide a formula of a biochar-based organic-inorganic compound fertilizer which solves the problem of lack of carbon element in soil, improves the growth vigor of crops and improves the yield.
The second purpose of the invention is to provide a production method of the biochar-based organic-inorganic compound fertilizer, which effectively utilizes industrial waste liquid and reduces material waste.
The third purpose of the invention is to provide a production system of the biochar-based organic-inorganic compound fertilizer, which has reasonable design, high automation degree and reduced material waste.
The first purpose of the invention is implemented by the following technical scheme: the formula of the biochar-based organic-inorganic compound fertilizer comprises the following components in parts by weight: 25-40 parts of lignite, 2-6 parts of glutamic acid mother liquor and 29.5-72.5 parts of inorganic components.
Further, the inorganic component comprises the following components in parts by weight: 5-12 parts of potassium chloride, 5-12 parts of potassium sulfate, 10-22 parts of monoammonium phosphate, 2-6 parts of ammonium sulfate, 0.5-1.5 parts of magnesium oxide, 0.5-1.5 parts of ferrous sulfate, 0.5-1.5 parts of zinc nitrate, 1-3 parts of borax and 5-13 parts of urea.
The second purpose of the invention is implemented by the following technical scheme: the production method of the biological carbon-based organic-inorganic compound fertilizer comprises the following steps: (1) pretreatment of lignite, (2) pretreatment of inorganic components, (3) pretreatment of liquid materials, (4) stirring, (5) granulation, (6) drying, (7) cooling and (8) screening; wherein,
(1) pretreatment of lignite: weighing 25-40 parts by weight of lignite, grinding to 20-60 meshes, mixing and activating with solid sodium hydroxide for 20-30min, wherein the mass ratio of the lignite to the sodium hydroxide is 6-8:1, and the mixing speed is 60-80r/min, so as to obtain activated lignite;
(2) pretreatment of inorganic components: weighing 29.5-72.5 parts by weight of inorganic components, and crushing to 8-40 meshes to obtain a crushed solid material;
(3) pretreatment of liquid materials: weighing 2-6 parts by weight of glutamic acid mother liquor, and concentrating the glutamic acid mother liquor until the Baume degree is 26-29 to obtain concentrated mother liquor;
(4) stirring: mixing the activated lignite and the crushed solid material, and spraying the concentrated mother liquor to the mixed activated lignite and crushed solid material to obtain a mixed wet material;
(5) and (3) granulation: after the stirring in the step (4) is finished, granulating the mixed wet material, wherein the granulation temperature is 10-30 ℃, the humidity is 12-14%, and the granulation rate is over 90%, so as to obtain wet material granules;
(6) drying: after the granulation in the step (5) is finished, drying the wet material particles until the water content of the wet material particles is 2-3% to obtain dry material particles;
(7) and (3) cooling: after the drying in the step (6) is finished, cooling the dry material particles to 10-30 ℃ to obtain coarse material particles;
(8) screening: and (7) after cooling, performing secondary screening on the coarse material particles, wherein the primary screening mesh number of the secondary screening is 4 meshes, the secondary screening mesh number of the secondary screening is 18 meshes, and oversize products of the secondary screening mesh are finished products.
Further, the inorganic component comprises the following components in parts by weight: 5-12 parts of potassium chloride, 5-12 parts of potassium sulfate, 10-22 parts of monoammonium phosphate, 2-6 parts of ammonium sulfate, 0.5-1.5 parts of magnesium oxide, 0.5-1.5 parts of ferrous sulfate, 0.5-1.5 parts of zinc nitrate, 1-3 parts of borax and 5-13 parts of urea.
And further, returning the oversize products of the primary sieve and the undersize products of the secondary sieve obtained by the sieving in the step (8) to the pretreatment of the solid material in the step (2) for crushing.
The third purpose of the invention is implemented by the following technical scheme: the production system of the biochar-based organic-inorganic compound fertilizer comprises a lignite supply system, an inorganic component supply system, a liquid material supply system and a processing system, wherein a discharge hole of an activation stirring tank of the lignite supply system is connected with a feed inlet of a disc stirrer of the processing system through a metering belt, a discharge hole of a pulverizer of the inorganic component supply system is connected with a feed inlet of the disc stirrer of the processing system through a metering belt, and an outlet of a concentration tank of the liquid material supply system is communicated with a liquid inlet of a disc granulator of the processing system through a flow meter.
Further, lignite supply system include lignite warehouse, raymond mill activation agitator tank, activator storage tank, the discharge gate in lignite warehouse with the feed inlet intercommunication of raymond mill, the discharge gate of raymond mill with the feed inlet intercommunication of activation agitator tank, the discharge gate of activator storage tank with the activator import intercommunication of activation agitator tank.
Furthermore, the inorganic component supply system comprises a plurality of macro-element bins, a plurality of trace element bins, a main conveying belt and the pulverizer, wherein a discharge port of each macro-element bin is connected with the conveying starting end of the main conveying belt through a metering belt, a discharge port of each trace element bin is connected with the conveying starting end of the main conveying belt through a metering belt, and the conveying tail end of the main conveying belt is arranged in a feed port of the pulverizer; the liquid material supply system comprises a glutamic acid mother liquor storage tank and the concentration tank, wherein an outlet of the glutamic acid mother liquor storage tank is communicated with an inlet of the concentration tank through a pipeline.
Further, the system of processing includes disc mixer disc granulator, drying-machine, cooler, second grade screening machine and return the material jar, disc mixer's discharge gate pass through the conveyer belt with disc granulator's feed inlet is connected, disc granulator's discharge gate pass through the conveyer belt with the feed inlet of drying-machine is connected, the discharge gate of drying-machine pass through the conveyer belt with the feed inlet of second grade screening machine is connected, the one-level sieve oversize export and the second grade sieve undersize export of second grade screening machine respectively through the conveyer belt with return the feed inlet of material jar and connect, the second grade sieve oversize export of second grade screening machine passes through the conveyer belt and is connected with the finished product, return the discharge gate of material jar pass through the conveyer belt with inorganic component supply system the feed inlet of rubbing crusher is connected.
Further, the air outlet of the disc granulator is communicated with the air inlet of the dust remover through a pipeline.
The invention has the advantages that: 1. according to the invention, the ratio of major elements to trace elements is reasonable, and lignite is used as a carbon source, so that the problem of carbon starvation of a field can be solved, the growth vigor of crops is improved, and the yield of the crops is improved; 2. after being concentrated, the glutamic acid mother liquor is used as a liquid phase material for granulation, so that the treatment pressure of the glutamic acid mother liquor of fermentation production enterprises is solved, organic matters in the glutamic acid mother liquor are effectively utilized, and the production cost is saved; 3. the system has scientific and reasonable design, and after the materials are crushed, granulated, dried, cooled and screened, products with unqualified particle diameters return to the crusher, so that the waste of the materials is reduced, and the yield of the products is high.
Description of the drawings:
fig. 1 is a schematic diagram of a production system of a biochar-based organic-inorganic compound fertilizer.
The device comprises a brown coal supply system 1, a brown coal storage bin 11, a Raymond mill 12, an activation stirring tank 13, an activating agent storage tank 14, an inorganic component supply system 2, a macroelement storage bin 21, a microelement storage bin 22, a main conveying belt 23, a crusher 24, a liquid material supply system 3, a glutamic acid mother liquor storage tank 31, a concentration tank 32, a processing system 4, a disc mixer 41, a disc granulator 42, a dryer 43, a cooler 44, a secondary screening machine 45, a material returning tank 46, a dust remover 47 and a finished product storage bin 5.
The specific implementation mode is as follows:
example 1:
as shown in fig. 1, the production system of biochar-based organic-inorganic compound fertilizer comprises a lignite supply system 1, an inorganic component supply system 2, a liquid material supply system 3 and a processing system 4, wherein a discharge port of an activation stirring tank 13 of the lignite supply system 1 is connected with a feed port of a disc stirrer 41 of the processing system 4 through a metering belt, a discharge port of a pulverizer 24 of the inorganic component supply system 2 is connected with a feed port of the disc stirrer 41 of the processing system 4 through the metering belt, and an outlet of a concentration tank 32 of the liquid material supply system 3 is communicated with a liquid inlet of a disc granulator 42 of the processing system 4 through a flow meter;
the lignite supply system 1 comprises a lignite storage bin 11, a Raymond mill 12, an activation stirring tank 13 and an activator storage tank 14, wherein a discharge hole of the lignite storage bin 11 is communicated with a feed hole of the Raymond mill 12, a discharge hole of the Raymond mill 12 is communicated with a feed hole of the activation stirring tank 13, and a discharge hole of the activator storage tank 14 is communicated with an activator inlet of the activation stirring tank 13;
the inorganic component supply system 2 comprises a plurality of macro-element bins 21, a plurality of trace element bins 22, a main conveyor belt 23 and a crusher 24, wherein the number of the macro-element bins 21 is five, and the number of the trace element bins 22 is four in the embodiment; the discharge hole of each macroelement storage bin 21 is connected with the conveying starting end of the main conveying belt 23 through a metering belt, the discharge hole of each microelement storage bin 22 is connected with the conveying starting end of the main conveying belt 23 through a metering belt, and the conveying tail end of the main conveying belt 23 is arranged in the feed hole of the pulverizer 24;
the liquid material supply system 3 comprises a glutamic acid mother liquor storage tank 31 and a concentration tank 32, wherein an outlet of the glutamic acid mother liquor storage tank 31 is communicated with an inlet of the concentration tank 32 through a pipeline;
the processing system 4 comprises a disc mixer 41, a disc granulator 42, a dryer 43, a cooler 44, a secondary screening machine 45 and a material returning tank 46, wherein a discharge port of the disc mixer 41 is connected with a feed port of the disc granulator 42 through a conveying belt, a discharge port of the disc granulator 42 is connected with a feed port of the dryer 43 through a conveying belt, an air outlet of the disc granulator 42 is communicated with an air inlet of a dust remover 47 through a pipeline, and the dust remover 47 can filter dust in waste discharged by the disc granulator 42 to prevent dust from discharging and polluting the environment; the discharge port of the dryer 43 is connected with the feed port of the secondary screening machine 45 through a conveyor belt, the oversize outlet of the primary screen and the undersize outlet of the secondary screening machine 45 are respectively connected with the feed port of the return tank 46 through conveyor belts, the oversize outlet of the secondary screen of the secondary screening machine 45 is connected with the finished product bin 5 through a conveyor belt, and the discharge port of the return tank 46 is connected with the feed port of the crusher 24 of the inorganic component supply system 2 through a conveyor belt.
The working process is as follows:
lignite is stored in a 11-bin lignite and enters a Raymond mill 12 to be crushed, lignite crushing is performed for better granulation, humic acid and organic matters in the crushed lignite can be better absorbed and utilized by crops, the crushed lignite enters an activation stirring tank 13 to be activated, an activating agent enters the activation stirring tank 13 through an activating agent storage tank 14, lignite activation is performed for converting combined-state humic acid and partial free-state humic acid in the lignite into water-soluble humic acid, the water-soluble humic acid can be absorbed by the crops, the utilization rate of the applied crops on fertilizer nutrients can be improved, and the activated lignite enters a disc mixer 41 through a metering belt;
the inorganic components comprise macroelements and microelements, each macroelement is stored in a macroelement bin 21, each microelement is stored in a microelement bin 22, the macroelements in each macroelement bin 21 and the microelements in each microelement bin 22 enter a crusher 24 to be crushed through a metering belt according to the proportioning requirement, the crushing of the inorganic components is for better granulation and improvement of granulation rate, and the crushed solid materials enter a disc mixer 41;
the liquid material is glutamic acid mother liquor, the glutamic acid mother liquor stored in a glutamic acid mother liquor storage tank 31 can enter a concentration tank 32 for concentration, the concentration of the liquid material is to improve the viscosity and the organic content of the liquid material, and the concentrated glutamic acid mother liquor enters a disc mixer 41 through a flowmeter;
according to the proportion requirement, the activated lignite and the crushed solid materials enter a disc mixer 41 to be mixed, and meanwhile, the concentrated glutamic acid mother liquor is sprayed in a mixing inorganic component to form mixed wet materials; the mixed wet material enters a disc granulator 42 through a conveying belt for granulation, the granulated wet material particles enter a dryer 43 through the conveying belt for drying, the moisture content of the dried dry material particles is 2-3%, the dried dry material particles enter a cooler 44 through the conveying belt for cooling, the temperature of the cooled dry material particles is reduced to 10-30 ℃, the cooled dry material particles enter a secondary screening machine 45 through the conveying belt for screening, oversize products on the secondary screening machine 45 are finished products, and the finished products are conveyed to a finished product bin 5 for storage; the oversize products of the first-level sieve and the undersize products of the second-level sieve are unqualified products, the unqualified products are returned to the material returning tank 46 through the conveying belt, and then the unqualified products are conveyed to the pulverizer 24 through the conveying belt to be pulverized, so that the screening purpose is to enable the finished products to meet the requirements of national relevant standards, the unqualified products are separated from the finished products, the unqualified rate is reduced, meanwhile, the utilization rate of the materials can be improved, and the material waste is.
Example 2:
the formula of the biochar-based organic-inorganic compound fertilizer comprises the following components in parts by weight: 25 parts of lignite, 2 parts of glutamic acid mother liquor, 5 parts of potassium chloride, 5 parts of potassium sulfate, 10 parts of monoammonium phosphate, 2 parts of ammonium sulfate, 0.5 part of magnesium oxide, 0.5 part of ferrous sulfate, 0.5 part of zinc nitrate, 1 part of borax and 5 parts of urea.
The lignite provides carbon elements, the lignite and glutamic acid mother liquor provide organic matters, potassium chloride and potassium sulfate provide potassium elements, monoammonium phosphate, ammonium sulfate and urea provide nitrogen elements, monoammonium phosphate provides phosphorus elements, magnesium oxide provides magnesium elements, ferrous sulfate provides iron elements, zinc nitrate provides zinc elements, and borax provides boron elements.
Example 3:
the production method of the biochar-based organic-inorganic compound fertilizer by using the production system of the biochar-based organic-inorganic compound fertilizer in the embodiment 1 and the formula of the biochar-based organic-inorganic compound fertilizer in the embodiment 2 comprises the following steps: (1) pretreatment of lignite, (2) pretreatment of inorganic components, (3) pretreatment of liquid materials, (4) stirring, (5) granulation, (6) drying, (7) cooling and (8) screening; wherein,
(1) pretreatment of lignite: weighing 25 parts by weight of lignite, grinding to 20 meshes, mixing and activating with solid sodium hydroxide for 20min, wherein the mass ratio of the lignite to the sodium hydroxide is 6:1, and the mixing speed is 60r/min, so as to obtain activated lignite; the lignite is crushed for better granulation, and humic acid and organic matters in the crushed lignite can be better absorbed and utilized by crops; the lignite is activated to convert bound humic acid and partial free humic acid in lignite into water-soluble humic acid which can be absorbed by crops, so that the utilization rate of the crops on fertilizer nutrients after application can be improved.
(2) Pretreatment of inorganic components: weighing inorganic components, wherein the inorganic components comprise the following components in parts by weight: 5 parts of potassium chloride, 5 parts of potassium sulfate, 10 parts of monoammonium phosphate, 2 parts of ammonium sulfate, 0.5 part of magnesium oxide, 0.5 part of ferrous sulfate, 0.5 part of zinc nitrate, 1 part of borax and 5 parts of urea, and crushing the mixture to 8 meshes to obtain a crushed solid material; the inorganic component is pulverized for better granulation and to increase the granulation rate.
(3) Pretreatment of liquid materials: weighing 2 parts by weight of glutamic acid mother liquor, and concentrating the glutamic acid mother liquor until the Baume degree is 26 to obtain concentrated mother liquor; the liquid material is concentrated to increase its viscosity and organic content.
(4) Stirring: mixing activated lignite and crushed solid materials at a mixing speed of 60r/min, and spraying concentrated mother liquor to the mixed activated lignite and crushed solid materials to obtain mixed wet materials; the purpose of the stirring is to ensure a material balance in the fertilizer granules.
(5) And (3) granulation: (4) after stirring, granulating the mixed wet material, wherein the granulation temperature is 10 ℃, the humidity is 12%, and the granulation rate is more than 90%, so as to obtain wet material granules; the purpose of granulation is to facilitate transportation, storage and application, and the fertilizer effect after granulation is longer.
(6) Drying: (5) after granulation is finished, drying the wet granules until the water content of the wet granules is 2% to obtain dry granules; the drying aims to control the water content of the wet material particles, improve the particle strength, meet the requirements of relevant national standards and facilitate storage.
(7) And (3) cooling: (6) after drying, cooling the dry material particles to 10 ℃ to obtain coarse material particles; the cooling aims to facilitate later-stage subpackaging, enhance the strength of the particles and prolong the storage time of the particles;
(8) screening: (7) after cooling, performing secondary screening on the coarse material particles, wherein the primary screen mesh number of the secondary screening is 4 meshes, the secondary screen mesh number of the secondary screening is 18 meshes, and oversize products of the secondary screening are finished products; returning the obtained oversize products of the first-stage sieve and undersize products of the second-stage sieve to the pretreatment of the inorganic components in the step (2) for crushing; the screening aims to enable the finished product to meet the requirements of national relevant standards, meanwhile, unqualified products are separated from the finished product, the unqualified rate is reduced, the utilization rate of materials can be improved, and the waste of the materials is reduced;
and (8) after the screening is finished, subpackaging the finished product, packaging and storing after the subpackaging inspection is qualified.
The detection indexes of the biochar-based organic-inorganic compound fertilizer prepared in the embodiment are shown in table 1.
TABLE 1 detection indexes of biochar-based organic-inorganic compound fertilizer prepared in example 3
| Item | Example 3 |
| Total nutrient (N + P)2O5+K2O) mass fraction/%) | 24.1 |
| Mass fraction/% of organic matter | 26.6 |
| Mass fraction of water/%) | 9 |
| pH value | 6.9 |
| Mortality/percent of roundworm eggs | 97 |
| Faecal coliform count/(per gram) | 30 |
| Mass fraction (As)/% of arsenic and its compounds | 0.001 |
| Mass fraction (in Cd)/% of cadmium and its compounds | 0.0005 |
| Mass fraction (in Pb)/% of lead and its compounds | 0.007 |
| Mass fraction (in terms of Cr)/% of chromium and its compounds | 0.02 |
| Mass fraction (in Hg)/% of mercury and its compounds | 0.0001 |
Example 4:
the formula of the biochar-based organic-inorganic compound fertilizer comprises the following components in parts by weight: 30 parts of lignite, 4 parts of glutamic acid mother liquor, 8 parts of potassium chloride, 8 parts of potassium sulfate, 15 parts of monoammonium phosphate, 4 parts of ammonium sulfate, 1 part of magnesium oxide, 1 part of ferrous sulfate, 1 part of zinc nitrate, 2 parts of borax and 10 parts of urea.
The lignite provides carbon elements, the lignite and glutamic acid mother liquor provide organic matters, potassium chloride and potassium sulfate provide potassium elements, monoammonium phosphate, ammonium sulfate, zinc nitrate and urea provide nitrogen elements, monoammonium phosphate provides phosphorus elements, magnesium oxide provides magnesium elements, ferrous sulfate provides iron elements, zinc nitrate provides zinc elements, and borax provides boron elements.
Example 5:
the production method of the biochar-based organic-inorganic compound fertilizer by using the production system of the biochar-based organic-inorganic compound fertilizer in the embodiment 1 and the formula of the biochar-based organic-inorganic compound fertilizer in the embodiment 4 comprises the following steps: (1) pretreatment of lignite, (2) pretreatment of inorganic components, (3) pretreatment of liquid materials, (4) stirring, (5) granulation, (6) drying, (7) cooling and (8) screening; wherein,
(1) pretreatment of lignite: weighing 30 parts by weight of lignite, grinding to 40 meshes, mixing and activating with solid sodium hydroxide for 25min, wherein the mass ratio of the lignite to the sodium hydroxide is 7:1, and the mixing speed is 75r/min to obtain activated lignite; the lignite is crushed for better granulation, and humic acid and organic matters in the crushed lignite can be better absorbed and utilized by crops; the lignite is activated to convert bound humic acid and partial free humic acid in lignite into water-soluble humic acid which can be absorbed by crops, so that the utilization rate of the crops on fertilizer nutrients after application can be improved.
(2) Pretreatment of inorganic components: weighing the following components in parts by weight: 8 parts of potassium chloride, 8 parts of potassium sulfate, 15 parts of monoammonium phosphate, 4 parts of ammonium sulfate, 1 part of magnesium oxide, 1 part of ferrous sulfate, 1 part of zinc nitrate, 2 parts of borax and 10 parts of urea, and crushing the mixture to 20 meshes to obtain a crushed solid material; the inorganic component is pulverized for better granulation and to increase the granulation rate.
(3) Pretreatment of liquid materials: weighing 4 parts by weight of glutamic acid mother liquor, and concentrating the glutamic acid mother liquor until the Baume degree is 27 to obtain concentrated mother liquor; the liquid material is concentrated to increase its viscosity and organic content.
(4) Stirring: mixing activated lignite and crushed solid materials at a mixing speed of 70r/min, and spraying concentrated mother liquor to the mixed activated lignite and crushed solid materials to obtain mixed wet materials; the purpose of the stirring is to ensure a material balance in the fertilizer granules.
(5) And (3) granulation: (4) after stirring, granulating the mixed wet material, wherein the granulation temperature is 20 ℃, the humidity is 13%, and the granulation rate is more than 90%, so as to obtain wet material granules; the purpose of granulation is to facilitate transportation, storage and application, and the fertilizer effect after granulation is longer.
(6) Drying: (5) after granulation is finished, drying the wet material particles until the water content of the wet material particles is 2.5 percent to obtain dry material particles; the drying aims to control the water content of the wet material particles, improve the particle strength, meet the requirements of relevant national standards and facilitate storage.
(7) And (3) cooling: (6) after drying, cooling the dry material particles to 20 ℃ to obtain coarse material particles; the cooling aims to facilitate later-stage subpackaging, enhance the strength of the particles and prolong the storage time of the particles;
(8) screening: (7) after cooling, performing secondary screening on the coarse material particles, wherein the primary screen mesh number of the secondary screening is 4 meshes, the secondary screen mesh number of the secondary screening is 18 meshes, the oversize product of the secondary screening is a finished product, and returning the obtained oversize product of the primary screen and undersize product of the secondary screening to the (2) pretreatment of inorganic components for crushing; the purpose of screening is in order to make the finished product accord with the requirement of national relevant standard, separates the defective work and finished product simultaneously, reduces the defective rate, can improve the utilization ratio of material simultaneously, reduces the material waste.
And (8) after the screening is finished, subpackaging the finished product, packaging and storing after the subpackaging inspection is qualified.
The detection indexes of the biochar-based organic-inorganic compound fertilizer prepared in the embodiment are shown in table 2.
TABLE 2 detection indexes of biochar-based organic-inorganic compound fertilizer prepared in example 5
| Item | Example 5 |
| Total nutrient (N + P)2O5+K2O) mass fraction/%) | 26.6 |
| Mass fraction/% of organic matter | 21.6 |
| Mass fraction of water/%) | 8 |
| pH value | 7.0 |
| Mortality/percent of roundworm eggs | 98 |
| Faecal coliform count/(per gram) | 32 |
| Mass fraction (As)/% of arsenic and its compounds | 0.003 |
| Mass fraction (in Cd)/% of cadmium and its compounds | 0.0005 |
| Mass fraction (in Pb)/% of lead and its compounds | 0.006 |
| Mass fraction (in terms of Cr)/% of chromium and its compounds | 0.02 |
| Mass fraction (in Hg)/% of mercury and its compounds | 0.0003 |
Example 6:
the formula of the biochar-based organic-inorganic compound fertilizer comprises the following components in parts by weight: 40 parts of lignite, 6 parts of glutamic acid mother liquor, 12 parts of potassium chloride, 12 parts of potassium sulfate, 22 parts of monoammonium phosphate, 6 parts of ammonium sulfate, 1.5 parts of magnesium oxide, 1.5 parts of ferrous sulfate, 1.5 parts of zinc nitrate, 3 parts of borax and 13 parts of urea.
The lignite provides carbon elements, the lignite and glutamic acid mother liquor provide organic matters, potassium chloride and potassium sulfate provide potassium elements, monoammonium phosphate, ammonium sulfate, zinc nitrate and urea provide nitrogen elements, monoammonium phosphate provides phosphorus elements, magnesium oxide provides magnesium elements, ferrous sulfate provides iron elements, zinc nitrate provides zinc elements, and borax provides boron elements.
Example 7:
the production method of the biochar-based organic-inorganic compound fertilizer by using the production system of the biochar-based organic-inorganic compound fertilizer in the embodiment 1 and the formula of the biochar-based organic-inorganic compound fertilizer in the embodiment 6 comprises the following steps: (1) pretreatment of lignite, (2) pretreatment of inorganic components, (3) pretreatment of liquid materials, (4) stirring, (5) granulation, (6) drying, (7) cooling and (8) screening; wherein,
(1) pretreatment of lignite: weighing 40 parts by weight of lignite, grinding to 60 meshes, mixing and activating with solid sodium hydroxide for 30min, wherein the mass ratio of the lignite to the sodium hydroxide is 8:1, and the mixing speed is 80r/min to obtain activated lignite; the lignite is crushed for better granulation, and humic acid and organic matters in the crushed lignite can be better absorbed and utilized by crops; the lignite is activated to convert bound humic acid and partial free humic acid in lignite into water-soluble humic acid which can be absorbed by crops, so that the utilization rate of the crops on fertilizer nutrients after application can be improved.
(2) Pretreatment of inorganic components: weighing the following components in parts by weight: 12 parts of potassium chloride, 12 parts of potassium sulfate, 22 parts of monoammonium phosphate, 6 parts of ammonium sulfate, 1.5 parts of magnesium oxide, 1.5 parts of ferrous sulfate, 1.5 parts of zinc nitrate, 3 parts of borax and 13 parts of urea, and crushing the mixture to 40 meshes to obtain a crushed solid material; the inorganic component is pulverized for better granulation and to increase the granulation rate.
(3) Pretreatment of liquid materials: weighing 6 parts by weight of glutamic acid mother liquor, and concentrating the glutamic acid mother liquor until the Baume degree is 29 to obtain concentrated mother liquor; the liquid material is concentrated to increase its viscosity and organic content.
(4) Stirring: mixing the activated lignite and the crushed solid materials at a mixing speed of 80r/min, and spraying concentrated mother liquor to the mixed activated lignite and crushed solid materials to obtain mixed wet materials; the purpose of the stirring is to ensure a material balance in the fertilizer granules.
(5) And (3) granulation: (4) after stirring, granulating the mixed wet material, wherein the granulation temperature is 30 ℃, the humidity is 14%, and the granulation rate is more than 90%, so as to obtain wet material granules; the purpose of granulation is to facilitate transportation, storage and application, and the fertilizer effect after granulation is longer.
(6) Drying: (5) after granulation is finished, drying the wet granules until the water content of the wet granules is 3% to obtain dry granules; the drying aims to control the water content of the wet material particles, improve the particle strength, meet the requirements of relevant national standards and facilitate storage.
(7) And (3) cooling: (6) after drying, cooling the dry material particles to 30 ℃ to obtain coarse material particles; the cooling aims to facilitate later-stage subpackaging, enhance the strength of the particles and prolong the storage time of the particles;
(8) screening: (7) after cooling, performing secondary screening on the coarse material particles, wherein the primary screen mesh number of the secondary screening is 4 meshes, the secondary screen mesh number of the secondary screening is 18 meshes, the oversize product of the secondary screening is a finished product, and returning the obtained oversize product of the primary screen and undersize product of the secondary screening to the (2) pretreatment of inorganic components for crushing; the screening aims to enable the finished product to meet the requirements of national relevant standards, meanwhile, unqualified products are separated from the finished product, the unqualified rate is reduced, the utilization rate of materials can be improved, and the waste of the materials is reduced;
(9) packaging: (8) and (4) after the screening is finished, subpackaging the finished product, packaging and storing after the subpackaging inspection is qualified.
The detection indexes of the biochar-based organic-inorganic compound fertilizer prepared in the embodiment are shown in table 3.
TABLE 3 detection indexes of biochar-based organic-inorganic compound fertilizer prepared in example 7
| Item | Example 7 |
| Total nutrient (N + P)2O5+K2O) mass fraction/%) | 26.6 |
| Mass fraction/% of organic matter | 20.5 |
| Mass fraction of water/%) | 9 |
| pH value | 7.2 |
| Mortality/percent of roundworm eggs | 98 |
| Faecal coliform count/(per gram) | 31 |
| Mass fraction (As)/% of arsenic and its compounds | 0.002 |
| Mass fraction (in Cd)/% of cadmium and its compounds | 0.0006 |
| Mass fraction (in Pb)/% of lead and its compounds | 0.005 |
| Mass fraction (in terms of Cr)/% of chromium and its compounds | 0.03 |
| Mass fraction (in Hg)/% of mercury and its compounds | 0.0002 |
Example 8:
the biochar-based organic-inorganic compound fertilizer prepared by the method and a commercial common organic-inorganic compound fertilizer are used for carrying out field potato planting experiments in the same test field under the same planting conditions; before planting, the biochar-based organic-inorganic compound fertilizer prepared by the invention and a commercially available common organic-inorganic compound fertilizer are respectively applied to a test field, and the application rate is 150 kg/mu. The potato field applied with the biochar-based organic-inorganic compound fertilizer prepared by the invention is an experimental group, the potato field applied with the commercial common organic-inorganic compound fertilizer is a control group, and the comparative data of the growth conditions of the two groups are shown in table 4.
TABLE 4 comparative data of growth of experimental group and control group
As can be seen from Table 1, the application of the biochar-based organic-inorganic compound fertilizer prepared by the method can improve the crop yield, the potato yield of an experimental group is higher than that of a control group, the yield increase percentage is 20%, and the yield increase effect is obvious; compared with the application of the common organic-inorganic compound fertilizer sold in the market, the crop applying the biochar-based organic-inorganic compound fertilizer prepared by the invention is superior to the crop applying the common organic-inorganic compound fertilizer sold in the market in terms of plant height, number of commodity potatoes per plant, starch content, leaf state and branch state, and the application shows that the biochar-based organic-inorganic compound fertilizer prepared by the invention can improve the growth vigor of the crop, improve the yield of the crop and prolong the fertilizer efficiency.
From the aspect of cost, the glutamic acid mother liquor is industrial wastewater produced by monosodium glutamate production enterprises, the treatment difficulty is high, the cost is high, and the biochar-based organic-inorganic compound fertilizer is produced by compounding a large number of element raw materials with the lignite and the glutamic acid mother liquor; not only relieves the pressure of processing waste liquid of production enterprises and reduces the cost of processing waste water of enterprises, but also changes waste into valuables and realizes the maximization of resource utilization; the price of the produced finished product of the biochar-based organic-inorganic compound fertilizer is about 2000 yuan per ton, which is reduced by 500 yuan for 1000 yuan per ton compared with the common organic-inorganic compound fertilizer sold in the market, thereby bringing real benefits to farmers and enterprises.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The formula of the biochar-based organic-inorganic compound fertilizer is characterized by comprising the following components in parts by weight: 25-40 parts of lignite, 2-6 parts of glutamic acid mother liquor and 29.5-72.5 parts of inorganic components.
2. The formula of the biochar-based organic-inorganic compound fertilizer as claimed in claim 1, wherein the inorganic components comprise the following components in parts by weight: 5-12 parts of potassium chloride, 5-12 parts of potassium sulfate, 10-22 parts of monoammonium phosphate, 2-6 parts of ammonium sulfate, 0.5-1.5 parts of magnesium oxide, 0.5-1.5 parts of ferrous sulfate, 0.5-1.5 parts of zinc nitrate, 1-3 parts of borax and 5-13 parts of urea.
3. The production method of the biochar-based organic-inorganic compound fertilizer is characterized by comprising the following steps: (1) pretreatment of lignite, (2) pretreatment of inorganic components, (3) pretreatment of liquid materials, (4) stirring, (5) granulation, (6) drying, (7) cooling and (8) screening; wherein,
(1) pretreatment of lignite: weighing 25-40 parts by weight of lignite, grinding to 20-60 meshes, mixing and activating with solid sodium hydroxide for 20-30min, wherein the mass ratio of the lignite to the sodium hydroxide is 6-8:1, and the mixing speed is 60-80r/min, so as to obtain activated lignite;
(2) pretreatment of inorganic components: weighing 29.5-72.5 parts by weight of inorganic components, and crushing to 8-40 meshes to obtain a crushed solid material;
(3) pretreatment of liquid materials: weighing 2-6 parts by weight of glutamic acid mother liquor, and concentrating the glutamic acid mother liquor until the Baume degree is 26-29 to obtain concentrated mother liquor;
(4) stirring: mixing the activated lignite and the crushed solid material, and spraying the concentrated mother liquor to the mixed activated lignite and crushed solid material to obtain a mixed wet material;
(5) and (3) granulation: after the stirring in the step (4) is finished, granulating the mixed wet material, wherein the granulation temperature is 10-30 ℃, the humidity is 12-14%, and the granulation rate is over 90%, so as to obtain wet material granules;
(6) drying: after the granulation in the step (5) is finished, drying the wet material particles until the water content of the wet material particles is 2-3% to obtain dry material particles;
(7) and (3) cooling: after the drying in the step (6) is finished, cooling the dry material particles to 10-30 ℃ to obtain coarse material particles;
(8) screening: and (7) after cooling, performing secondary screening on the coarse material particles, wherein the primary screening mesh number of the secondary screening is 4 meshes, the secondary screening mesh number of the secondary screening is 18 meshes, and oversize products of the secondary screening mesh are finished products.
4. The production method of the biochar-based organic-inorganic compound fertilizer as claimed in claim 3, wherein the inorganic components comprise the following components in parts by weight: 5-12 parts of potassium chloride, 5-12 parts of potassium sulfate, 10-22 parts of monoammonium phosphate, 2-6 parts of ammonium sulfate, 0.5-1.5 parts of magnesium oxide, 0.5-1.5 parts of ferrous sulfate, 0.5-1.5 parts of zinc nitrate, 1-3 parts of borax and 5-13 parts of urea.
5. The production method of the biochar-based organic-inorganic compound fertilizer as claimed in claim 3, wherein the oversize products of the primary sieve and the undersize products of the secondary sieve obtained by the sieving in the step (8) are returned to the pretreatment of the inorganic components in the step (2) for crushing.
6. The production system of the biochar-based organic-inorganic compound fertilizer is characterized by comprising a lignite supply system, an inorganic component supply system, a liquid material supply system and a processing system, wherein a discharge port of an activation stirring tank of the lignite supply system is connected with a feed port of a disc stirrer of the processing system through a metering belt, a discharge port of a pulverizer of the inorganic component supply system is connected with a feed port of the disc stirrer of the processing system through a metering belt, and an outlet of a concentration tank of the liquid material supply system is communicated with a liquid inlet of a disc granulator of the processing system through a flow meter.
7. The production system of the biochar-based organic-inorganic compound fertilizer as claimed in claim 6, wherein the lignite supply system comprises a lignite silo, a Raymond mill, the activation stirring tank and an activator storage tank, a discharge port of the lignite silo is communicated with a feed port of the Raymond mill, a discharge port of the Raymond mill is communicated with a feed port of the activation stirring tank, and a discharge port of the activator storage tank is communicated with an activator inlet of the activation stirring tank.
8. The production system of biochar-based organic-inorganic compound fertilizer as claimed in claim 6, wherein the inorganic component supply system comprises a plurality of macro-element bins, a plurality of micro-element bins, a main conveyor belt and the pulverizer, a discharge port of each macro-element bin is connected with a conveying starting end of the main conveyor belt through a metering belt, a discharge port of each micro-element bin is connected with a conveying starting end of the main conveyor belt through a metering belt, and a conveying tail end of the main conveyor belt is arranged in a feed port of the pulverizer; the liquid material supply system comprises a glutamic acid mother liquor storage tank and the concentration tank, wherein an outlet of the glutamic acid mother liquor storage tank is communicated with an inlet of the concentration tank through a pipeline.
9. The production system of bio-carbon based organic-inorganic compound fertilizer as claimed in claim 6, the processing system comprises the disc mixer, the disc granulator, a dryer, a cooler, a secondary screening machine and a material returning tank, the discharge hole of the disc mixer is connected with the feed inlet of the disc granulator through a conveyer belt, the discharge hole of the disk granulator is connected with the feed inlet of the dryer through a conveyer belt, the discharge hole of the dryer is connected with the feed inlet of the secondary screening machine through a conveyer belt, the primary screen oversize outlet and the secondary screen undersize outlet of the secondary screening machine are respectively connected with the feed inlet of the material returning tank through a conveying belt, the secondary screening material outlet of the secondary screening machine is connected with a finished product bin through a conveying belt, and the discharge port of the material returning tank is connected with the feed inlet of the pulverizer of the inorganic component supply system through the conveying belt.
10. The production system of biochar-based organic-inorganic compound fertilizer as claimed in any one of claims 6 to 9, wherein the air outlet of the disc granulator is communicated with the air inlet of a dust remover through a pipeline.
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