CN104892796A - Flow separation device and method for chemical components of agricultural and forest biomass - Google Patents
Flow separation device and method for chemical components of agricultural and forest biomass Download PDFInfo
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Abstract
The invention relates to a flow separation device and method for chemical components of agricultural and forest biomass. The separation device comprises a normal temperature solvent storage tank, a temperature adjusting unit, a thermal solvent storage tank, an extraction pipe and a collection tank, wherein the normal temperature solvent storage tank is connected with the temperature adjusting unit via a high pressure pump; the temperature adjusting unit is connected with the thermal solvent storage tank; the thermal solvent storage tank is connected with the extraction pipe via a one-way valve; the extraction pipe is connected with the temperature adjusting unit via a constant pressure valve; and the temperature adjusting unit is further connected with the collection tank. By using the device and changing the category, temperature, pressure and flow rate of a solvent, hemicellulose and lignin in raw materials can be extracted to the solvent step by step, and liposoluble substances, hemicellulose, lignin and cellulose components can be separated from the biomass. The separation method realizes separation of the chemical components of agricultural and forest biomass in a solvent flowing state, and has the characteristics of quick and efficient separation, low solvent consumption and non-degradability of the components.
Description
Technical field
The invention discloses a kind of streaming tripping device and method of agricultural-forestry biomass chemical composition, belong to biomass refining field.
Background technology
The materials such as the lignocellulose such as stalk, trees, farming industry tankage and agriculture and forestry organic waste material in agricultural-forestry biomass main finger agroforestry production process except grain, fruit, have recyclability, low stain and extensive distributivity.Chemically form, biomass contain except containing except the large component of Mierocrystalline cellulose, hemicellulose and xylogen three, also containing lipid-soluble substances such as a certain amount of resin, fat, waxes.
Biomass refining refers to by developing new chemistry, biology and mechanical means, is the set of the technology and equipment for various chemical, fuel and bio-based materials by Wood Adhesives from Biomass.The basis that effective separation of biomass components makes biomass refine, can provide suitable raw material for subsequent transformation, therefore becomes the focus of industry member and academia's research.
In recent years, in the separation of agricultural-forestry biomass chemical composition, a large amount of patent is emerged.Chinese patent document CN102561082A (application number: 201210051748.5) disclose a kind of method extracting hemicellulose, Mierocrystalline cellulose and xylogen from lignocellulose raw material, the hemi-cellulose components in hot-water extraction biomass is utilized in the reactor of static state, then utilize alkali organic solvent (methyl alcohol containing sodium hydroxide, potassium hydroxide, calcium hydroxide or ethanolic soln) extracting lignin component, finally realize hemicellulose, xylogen is separated with cellulosic.Chinese patent document CN102101915A (application number: the separation method 201010542903.4) disclosing a kind of agricultural-forestry biomass component, utilize ionic liquid that agricultural-forestry biomass powder is all dissolved as biomass solution, then the combination of acetone, water, alkali and ethanol is utilized, form specific solvent, the hemicellulose in biomass solution, Mierocrystalline cellulose and lignin are separated respectively.Chinese patent document CN101790611A (application number: 200880102063.0) disclose a kind of method and system biomass components being separated into the single components such as such as Mierocrystalline cellulose, hemicellulose and xylogen, utilize in reactor 10% ~ 30% ammonia and derivative by xylogen stripping, then utilize the mineral acid of 0.25%-2% by hemicellulose stripping, similar patent also has Chinese patent document CN1779070A (application number: 200510036416.X) and Chinese patent document CN103924468A (application number: 201310688644.X).
But the separation method described in above-mentioned patent document all realizes in a static manner at reactor, and efficiency is lower; And the corrodibility such as sodium hydroxide, potassium hydroxide, sulfuric acid, hydrochloric acid, hydrogen peroxide and the stronger solvent of oxidisability, extract in the reactor of static state, the time is longer, and carbohydrate degradation is serious, generate the impurity such as a large amount of furfurals and organic acid, for component purifying afterwards brings difficulty.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of streaming tripping device and method of agricultural-forestry biomass chemical composition, utilize this apparatus and method, the sharp separation of the chemical compositions such as lipid-soluble substance in biomass, hemicellulose, xylogen and Mierocrystalline cellulose can be realized.Be separated by streaming extracting, biomass components is outflow reactor while stripping, avoids the degraded of component, greatly improves the purity of extracting component.
Technical scheme of the present invention is as follows:
A kind of streaming tripping device of agricultural-forestry biomass chemical composition, comprise normal temperature solvent storage tank, thermostat unit, hot solvent hold-up vessel, extraction tube and holding tank, described normal temperature solvent storage tank is connected with thermostat unit by high-pressure pump, described thermostat unit is connected with hot solvent hold-up vessel, described hot solvent hold-up vessel is connected with extraction tube by check valve, described extraction tube is connected with thermostat unit by constant pressure valve, and described thermostat unit is also connected with holding tank.
According to the present invention, preferably, described thermostat unit comprises the well heater and water cooler that are connected in parallel, and described well heater is connected with high-pressure pump and hot solvent hold-up vessel respectively, and described water cooler is connected with constant pressure valve and holding tank respectively.
According to the present invention, preferably, also tensimeter is provided with between described constant pressure valve and extraction tube.
According to the present invention, preferably, described extraction tube inside is provided with helixes feed equipment, and opening for feed and the discharge port of extraction tube are provided with filter screen.Filter screen is for preventing the loss of agricultural-forestry biomass material.
According to the present invention, preferably, described high-pressure pump is polynary gradient high-pressure pump, can realize the arbitrary volume mixing of 2 ~ 4 kinds of solvents, can provide the constant pressure of 1 ~ 40MPa;
Preferably, the temperature regulating range of described thermostat unit is at 10 ~ 400 DEG C;
Preferably, pressure can regulate by described constant pressure valve between 1 ~ 40MPa.
According to the present invention, a kind of streaming separation method of agricultural-forestry biomass chemical composition, comprises use said apparatus, comprises step as follows;
(1) load in extraction tube by after agricultural-forestry biomass raw material pulverizing, solvent is loaded in normal temperature solvent storage tank, by high-pressure pump, solvent is pumped in thermostat unit, well heater in thermostat unit will be transported in hot solvent hold-up vessel after solvothermal, regulate check valve and constant pressure valve control the flow velocity of solvent and then control solvent in the residence time of extraction tube, solvent extracts agricultural-forestry biomass chemical composition;
High-pressure pump regulates the pressure in leaching process to be 1 ~ 40MPa;
(2), after extraction terminates, the solvent extracted after chemical composition enters in thermostat unit, and the condenser in thermostat unit is transported in holding tank to after solvent condenses to normal temperature, and namely solvent evaporative removal is obtained agricultural-forestry biomass chemical composition.
According to the present invention, preferably, in step (1), when being separated the lipid-soluble substance in agricultural-forestry biomass, described solvent is that benzene, toluene, methyl alcohol, ethanol, supercritical co are or/and methyl tertiary butyl ether, temperature after solvothermal is 40-210 DEG C, pressure 0.5-25MPa, and solvent is 5-120min in the residence time of extraction tube; Preferred further, described lipid-soluble substance is including but not limited to resin, vegatable tannin, lipid acid, plant sterol; Preferred, the temperature after solvothermal is 100-120 DEG C, pressure 6-8MPa, and solvent is 20-40min in the residence time of extraction tube;
When being separated the hemicellulose in agricultural-forestry biomass, described solvent is the dilute acid soln of water, 0.2-10wt% concentration, and the temperature after solvothermal is 100-190 DEG C, pressure 2.5-10MPa, and solvent is 2-60min in the residence time of extraction tube; Preferred further, described dilute acid soln is sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid or carbonic acid; Preferred, described solvent is the dilute acid soln of water, 0.1-2wt% concentration, and the temperature after solvothermal is 160-180 DEG C, pressure 6-8MPa, and solvent is 10-30min in the residence time of extraction tube;
When being separated the xylogen in agricultural-forestry biomass, described solvent is that the dilute alkaline soln of 1-20wt% concentration, the inorganic salt solution of 0.1-2wt% concentration, tetrahydrofuran (THF), dioxane, dimethyl formamide, dimethyl sulfoxide (DMSO) are or/and liquefied ammonia, temperature after solvothermal is 80-180 DEG C, pressure 0.5-25MPa, solvent is 10-90min in the residence time of extraction tube; Preferred further, described dilute alkaline soln is sodium hydroxide, potassium hydroxide, calcium hydroxide, and described inorganic salt are carbonate or sulphite; Preferred, described solvent is that the dilute alkaline soln of 6-8wt% concentration, the inorganic salt solution of 0.1-0.5wt% concentration, tetrahydrofuran (THF), dioxane, dimethyl formamide, dimethyl sulfoxide (DMSO) are or/and liquefied ammonia, temperature after solvothermal is 80-140 DEG C, pressure 6-15MPa, solvent is 10-30min in the residence time of extraction tube;
Preferably, high-pressure pump regulates the pressure in leaching process to be 8 ~ 30MPa;
Preferably, the mass ratio of described solvent and agricultural-forestry biomass raw material is 3-15:1.
According to the present invention, preferably, described agricultural-forestry biomass raw material is poplar.
According to the present invention, agricultural-forestry biomass raw material is loaded in extraction tube, utilize high-pressure pump that solvent is flowed in extraction tube, by controlling the kind of solvent, ratio, temperature, pressure and flow velocity, by the lipid-soluble substance in agricultural-forestry biomass raw material, hemicellulose, lignin component successively extracting in solvent, in agricultural-forestry biomass, cellulosic component is finally present in extraction tube with solid-state form, realizes the separation of biomass chemical composition.
Beneficial effect of the present invention:
1, tripping device structure of the present invention is simple, uses light, good separating effect.
2, separation method of the present invention is the separation realized under solvent flow state agricultural-forestry biomass chemical composition, have separation rapidly and efficiently, low, the component of solvent usage quantity is without the feature of degraded.
Accompanying drawing explanation
Fig. 1 is the agent structure schematic diagram of the streaming tripping device of agricultural-forestry biomass chemical composition of the present invention; Wherein: 1, normal temperature solvent storage tank, 2, high-pressure pump, 3, thermostat unit, 4, hot solvent hold-up vessel, 5, check valve, 6, extraction tube, 7, tensimeter, 8, constant pressure valve, 9, holding tank.
Embodiment
Below by specific embodiment, the present invention will be further described, but be not limited thereto.
Embodiment 1:
A kind of streaming tripping device of agricultural-forestry biomass chemical composition, comprise normal temperature solvent storage tank 1, thermostat unit 3, hot solvent hold-up vessel 4, extraction tube 6 and holding tank 9, described normal temperature solvent storage tank 1 is connected with thermostat unit 3 by high-pressure pump 2, described thermostat unit 3 is connected with hot solvent hold-up vessel 4, described hot solvent hold-up vessel 4 is connected with extraction tube 6 by check valve 5, described extraction tube 6 is connected with thermostat unit 3 by constant pressure valve 8, and described thermostat unit 3 is also connected with holding tank 9;
Described thermostat unit 3 comprises the well heater and water cooler that are connected in parallel, and described well heater is connected with high-pressure pump 2 and hot solvent hold-up vessel 4 respectively, and described water cooler is connected with constant pressure valve 8 and holding tank 9 respectively;
Tensimeter 7 is also provided with between described constant pressure valve 8 and extraction tube 6;
Described extraction tube 6 inside is provided with helixes feed equipment, and opening for feed and the discharge port of extraction tube 6 are provided with filter screen;
Described high-pressure pump 2 is polynary gradient high-pressure pump, can realize the arbitrary volume mixing of 2 ~ 4 kinds of solvents, can provide the constant pressure of 1 ~ 40MPa;
The temperature regulating range of described thermostat unit 3 is at 10 ~ 400 DEG C;
Pressure can regulate by described constant pressure valve 8 between 1 ~ 40MPa.
Embodiment 2:
Utilize device described in embodiment 1 to a streaming separation method for poplar chemical composition, comprise step as follows;
(1) will load in extraction tube 6 after poplar raw material pulverizing, solvent is loaded in normal temperature solvent storage tank 1, by high-pressure pump 2, solvent is pumped in thermostat unit 3, well heater in thermostat unit 3 will be transported in hot solvent hold-up vessel 4 after solvothermal, regulate check valve 5 and constant pressure valve 8 control the flow velocity of solvent and then control solvent in the residence time of extraction tube 6, solvent extracts agricultural-forestry biomass chemical composition;
Different solvents is used to realize the separation of different chemical component, specific as follows:
A, solvent are methyl tertiary butyl ether, thermostat unit 3 heated solvent temperature is to 100-110 DEG C, flow velocity is regulated to make the residence time 30min of solvent in extraction tube 6, continue pumping 60min, use 4 times that solvent quality is poplar raw materials quality, obtain the t-butyl methyl ether solution containing lipid-soluble substance (resin, vegatable tannin, lipid acid and plant sterol);
B, solvent are water, thermostat unit 3 heated solvent temperature, to 175-185 DEG C, regulates flow velocity to make the residence time 20min of solvent in extraction tube 6, continues pumping 40min, use 4 times that solvent quality is poplar raw materials quality, obtain the aqueous solution containing hemicellulose;
C, solvent are tetrahydrofuran solution, thermostat unit 3 heated solvent temperature, to 120-135 DEG C, regulates flow velocity to make the residence time 20min of solvent in extraction tube 6, continues pumping 60min, use 4 times that solvent quality is poplar raw materials quality, obtain the tetrahydrofuran solution containing xylogen;
High-pressure pump 2 regulates the pressure in leaching process to be 8 ~ 30MPa;
(2), after extraction terminates, the solvent extracted after chemical composition enters in thermostat unit 3, and the condenser in thermostat unit 3 is to being transported in holding tank 9 after solvent condenses to normal temperature;
Evaporative removal methyl tertiary butyl ether obtains lipid-soluble substance, and after evaporative removal water, drying obtains hemicellulose, and evaporative removal tetrahydrofuran solution obtains xylogen, and the solid taken out in extraction tube 6 obtains Mierocrystalline cellulose.
In the present embodiment, the yield of lipid-soluble substance is 95-99%, and the yield of hemicellulose is 75-90%, and the yield of xylogen is 86-95%, and Mierocrystalline cellulose yield is 80-96%.In addition, the degraded product of the sugar such as furfural and hydroxymethylfurfural is not detected in the above-mentioned hemicellulose aqueous solution.
Comparative example:
The static separation of poplar raw material chemical composition, comprises step as follows:
Reactor is put into by after poplar raw material pulverizing, and add the methyl tertiary butyl ether of 6 times of poplar raw materials quality, be heated to 100-110 DEG C and maintain 30min, cooling tapping, obtain the t-butyl methyl ether solution containing lipid-soluble substance (resin, fat, wax and plant sterol), evaporative removal t-butyl methyl ether solution obtains lipid-soluble substance.
In reactor, add the water of 6 times of poplar raw materials quality, be heated to 175-185 DEG C and maintain 20min, cooling tapping, obtains the aqueous solution containing hemicellulose, evaporative removal water drying obtains hemicellulose.
In reactor, add the tetrahydrofuran (THF) of sawdust 6 times of poplar raw materials quality, be heated to 120-135 DEG C and be incubated 20min, cooling tapping, obtain the tetrahydrofuran solution containing xylogen, evaporative removal tetrahydrofuran (THF) obtains xylogen.
Finally take out the solid residue in reactor, obtain Mierocrystalline cellulose.
In this comparative example, the yield of lipid-soluble substance is 85-90%, and the yield of hemicellulose is 45-60%, and the yield of xylogen is 50-64%, and Mierocrystalline cellulose yield is 70-82%.In addition, the degraded product of the sugar such as 2-5g/L furfural and 1-3g/L hydroxymethylfurfural is not detected in the above-mentioned hemicellulose aqueous solution.
By comparative example 1 and comparative example, known, streaming separation method of the present invention significantly improves than static type separation method separation efficiency, and carbohydrate is not degraded.
Embodiment 3:
Utilize device described in embodiment 1 to a streaming separation method for poplar chemical composition, comprise step as follows;
(1) will load in extraction tube 6 after poplar raw material pulverizing, solvent is loaded in normal temperature solvent storage tank 1, by high-pressure pump 2, solvent is pumped in thermostat unit 3, well heater in thermostat unit 3 will be transported in hot solvent hold-up vessel 4 after solvothermal, regulate check valve 5 and constant pressure valve 8 control the flow velocity of solvent and then control solvent in the residence time of extraction tube 6, solvent extracts agricultural-forestry biomass chemical composition;
Different solvents is used to realize the separation of different chemical component, specific as follows:
A, solvent are ethanol, thermostat unit 3 heated solvent temperature is to 100-110 DEG C, flow velocity is regulated to make the residence time 30min of solvent in extraction tube 6, continue pumping 60min, use 4 times that solvent quality is poplar raw materials quality, obtain the ethanolic soln containing lipid-soluble substance (resin, vegatable tannin, lipid acid and plant sterol);
B, solvent are the hydrochloric acid of 0.2wt%, thermostat unit 3 heated solvent temperature, to 175-185 DEG C, regulates flow velocity to make the residence time 10min of solvent in extraction tube 6, continues pumping 40min, use 4 times that solvent quality is poplar raw materials quality, obtain the hydrochloric acid soln containing hemicellulose;
C, solvent are the dioxane aqueous solution (90.2% dioxane, 9.8% water), thermostat unit 3 heated solvent temperature is to 80-120 DEG C, flow velocity is regulated to make the residence time 20min of solvent in extraction tube 6, continue pumping 40min, use 4 times that solvent quality is poplar raw materials quality, obtain the dioxane aqueous solution containing xylogen;
High-pressure pump 2 regulates the pressure in leaching process to be 8 ~ 30MPa;
(2), after extraction terminates, the solvent extracted after chemical composition enters in thermostat unit 3, and the condenser in thermostat unit 3 is to being transported in holding tank 9 after solvent condenses to normal temperature;
Evaporative removal ethanol obtains lipid-soluble substance, and after evaporative removal hydrochloric acid, drying obtains hemicellulose, and evaporative removal solution obtains xylogen, and the solid taken out in extraction tube 6 obtains Mierocrystalline cellulose.
In the present embodiment, the yield of lipid-soluble substance is 95-99%, and the yield of hemicellulose is 70-80%, and the yield of xylogen is 90-95%, and Mierocrystalline cellulose yield is 90-95%.
Embodiment 4:
As described in Example 2, unlike:
In step (1), A, solvent are toluene, thermostat unit 3 heated solvent temperature is to 100-110 DEG C, flow velocity is regulated to make the residence time 20min of solvent in extraction tube 6, continue pumping 40min, use 6 times that solvent quality is poplar raw materials quality, obtain the toluene solution containing lipid-soluble substance (resin, vegatable tannin, lipid acid and plant sterol);
B, solvent are the sulfuric acid of 0.2wt%, thermostat unit 3 heated solvent temperature, to 175-185 DEG C, regulates flow velocity to make the residence time 20min of solvent in extraction tube 6, continues pumping 40min, use 6 times that solvent quality is poplar raw materials quality, obtain the sulphuric acid soln containing hemicellulose;
C, solvent are 0.2wt% sodium hydroxide solution, thermostat unit 3 heated solvent temperature is to 110-120 DEG C, flow velocity is regulated to make the residence time 30min of solvent in extraction tube 6, continue pumping 40min, use 4 times that solvent quality is poplar raw materials quality, obtain the sodium hydroxide solution containing xylogen;
In step (2), extract after terminating, the solvent extracted after chemical composition enters in thermostat unit 3, and the condenser in thermostat unit 3 is to being transported in holding tank 9 after solvent condenses to normal temperature;
Evaporative removal toluene obtains lipid-soluble substance, and after evaporative removal solution, drying obtains hemicellulose, and evaporative removal solution obtains xylogen, and the solid taken out in extraction tube 6 obtains Mierocrystalline cellulose.
Claims (10)
1. the streaming tripping device of an agricultural-forestry biomass chemical composition, it is characterized in that, the streaming tripping device of this agricultural-forestry biomass chemical composition comprises normal temperature solvent storage tank, thermostat unit, hot solvent hold-up vessel, extraction tube and holding tank, described normal temperature solvent storage tank is connected with thermostat unit by high-pressure pump, described thermostat unit is connected with hot solvent hold-up vessel, described hot solvent hold-up vessel is connected with extraction tube by check valve, described extraction tube is connected with thermostat unit by constant pressure valve, described thermostat unit is also connected with holding tank.
2. the streaming tripping device of agricultural-forestry biomass chemical composition according to claim 1, it is characterized in that, described thermostat unit comprises the well heater and water cooler that are connected in parallel, described well heater is connected with high-pressure pump and hot solvent hold-up vessel respectively, and described water cooler is connected with constant pressure valve and holding tank respectively.
3. the streaming tripping device of agricultural-forestry biomass chemical composition according to claim 1, is characterized in that, is also provided with tensimeter between described constant pressure valve and extraction tube.
4. the streaming tripping device of agricultural-forestry biomass chemical composition according to claim 1, is characterized in that, described extraction tube inside is provided with helixes feed equipment, and opening for feed and the discharge port of extraction tube are provided with filter screen.
5. the streaming tripping device of agricultural-forestry biomass chemical composition according to claim 1, is characterized in that, described high-pressure pump provides pressure range to be 1 ~ 40MPa.
6. the streaming tripping device of agricultural-forestry biomass chemical composition according to claim 1, is characterized in that, the temperature regulating range of described thermostat unit is at 10 ~ 400 DEG C.
7. a streaming separation method for agricultural-forestry biomass chemical composition, comprises the streaming tripping device used described in any one of claim 1-6, comprises step as follows;
(1) load in extraction tube by after agricultural-forestry biomass raw material pulverizing, solvent is loaded in normal temperature solvent storage tank, by high-pressure pump, solvent is pumped in thermostat unit, well heater in thermostat unit will be transported in hot solvent hold-up vessel after solvothermal, regulate check valve and constant pressure valve control the flow velocity of solvent and then control solvent in the residence time of extraction tube, solvent extracts agricultural-forestry biomass chemical composition;
High-pressure pump regulates the pressure in leaching process to be 1 ~ 40MPa;
(2), after extraction terminates, the solvent extracted after chemical composition enters in thermostat unit, and the condenser in thermostat unit is transported in holding tank to after solvent condenses to normal temperature, and namely solvent evaporative removal is obtained agricultural-forestry biomass chemical composition.
8. the streaming separation method of agricultural-forestry biomass chemical composition according to claim 7, it is characterized in that, in step (1), when being separated the lipid-soluble substance in agricultural-forestry biomass, described solvent is that benzene, toluene, methyl alcohol, ethanol, supercritical co are or/and methyl tertiary butyl ether, temperature after solvothermal is 40-210 DEG C, pressure 0.5-25MPa, and solvent is 5-120min in the residence time of extraction tube; Preferred further, described lipid-soluble substance is including but not limited to resin, vegatable tannin, lipid acid, plant sterol; Preferred, the temperature after solvothermal is 100-120 DEG C, pressure 6-8MPa, and solvent is 20-40min in the residence time of extraction tube;
When being separated the hemicellulose in agricultural-forestry biomass, described solvent is the dilute acid soln of water, 0.2-10wt% concentration, and the temperature after solvothermal is 100-190 DEG C, pressure 2.5-10MPa, and solvent is 2-60min in the residence time of extraction tube; Preferred further, described dilute acid soln is sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid or carbonic acid; Preferred, described solvent is the dilute acid soln of water, 0.1-2wt% concentration, and the temperature after solvothermal is 160-180 DEG C, pressure 6-8MPa, and solvent is 10-30min in the residence time of extraction tube;
When being separated the xylogen in agricultural-forestry biomass, described solvent is that the dilute alkaline soln of 1-20wt% concentration, the inorganic salt solution of 0.1-2wt% concentration, tetrahydrofuran (THF), dioxane, dimethyl formamide, dimethyl sulfoxide (DMSO) are or/and liquefied ammonia, temperature after solvothermal is 80-180 DEG C, pressure 0.5-25MPa, solvent is 10-90min in the residence time of extraction tube; Preferred further, described dilute alkaline soln is sodium hydroxide, potassium hydroxide, calcium hydroxide, and described inorganic salt are carbonate or sulphite; Preferred, described solvent is that the dilute alkaline soln of 6-8wt% concentration, the inorganic salt solution of 0.1-0.5wt% concentration, tetrahydrofuran (THF), dioxane, dimethyl formamide, dimethyl sulfoxide (DMSO) are or/and liquefied ammonia, temperature after solvothermal is 80-140 DEG C, pressure 6-15MPa, solvent is 10-30min in the residence time of extraction tube.
9. the streaming separation method of agricultural-forestry biomass chemical composition according to claim 7, is characterized in that, the mass ratio of the solvent described in step (1) and agricultural-forestry biomass raw material is 3-15:1.
10. the streaming separation method of agricultural-forestry biomass chemical composition according to claim 7, is characterized in that, the agricultural-forestry biomass raw material described in step (1) is poplar.
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| CN105906398A (en) * | 2016-04-13 | 2016-08-31 | 齐鲁工业大学 | Method for preparing organic fertilizer through processing agriculture and forestry wastes by using organic solvent |
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