Separation method for treating lignocellulose biomass components by using organic solution

Abstract

The invention discloses a separation method for treating lignocellulose biomass components by using an organic solution, and relates to the technical field of biomass component separation. The method comprises the following steps: firstly, digesting biomass fragments with the length of 3-6cm for 40-120 minutes by using an extracting solvent through a continuous digester at 120-180 DEG C according to a solid-to-liquid ratio of (1: 2)-(1: 10), so as to obtain liquid-phase and solid-state cellulose slurry containing dissolved lignin; secondly, after the pulp is concentrated and subjected to residue removal, washing is conducted through a three-section double-roller pulp washer, drying is conducted through an evapo-separated machine according to the pulp washing solvent proportion of 1: 1-1: 4 till the water content is smaller than or equal to 10%, cellulose solids are obtained, and washing rich liquid is collected at the same time; and finally, performing rectification, flash evaporation and rotary film evaporation on the cooking rich solution and the washing rich solution to recover the solvent, thereby obtaining a lignin solid. In the process, a washing solution is recycled in a No.1 rectifying tower, a mixed solution is separated in a flash tower and a No.2 rectifying tower, wastewater is treated, and a lignin solution is evaporated by a rotating-film evaporator, falls down by gravity and is molded and cooled to obtain a lignin product. According to the method, biomass components are effectively separated, and the solvent and lignin are recycled.

Description

Technical Field

[0001] The invention belongs to the technical field of separation methods of biomass components, and in particular relates to a separation method of lignocellulose biomass components by treating them with an organic solution. Background Art

[0002] With the depletion of fossil fuel resources and the increasing severity of environmental problems, it is urgent to find alternatives to petrochemical products. Biomass, as a renewable resource, has received widespread attention and can be used to produce a variety of chemical products.

[0003] The total amount of lignocellulosic biomass generated by photosynthesis on the earth exceeds 200 billion tons each year, making it the most abundant renewable resource. Lignocellulosic biomass exists in the form of plant bodies, and its main components are cellulose, hemicellulose and lignin. Among the components of lignocellulosic biomass, cellulose accounts for about 40%, hemicellulose accounts for about 25%, and lignin accounts for about 20%.

[0004] In order to make full use of lignocellulosic biomass and convert it into effectively usable energy and chemical products, it is necessary to separate the components of lignocellulosic biomass, which has always been a difficult point in the field of biomass research. The main methods for separating lignocellulosic components include: dilute acid method, alkali method, steam explosion method, high temperature liquid water method, ammonia explosion method, biological method, organic solvent method, ionic liquid method, low eutectic solvent method, and less commonly used mechanical and extrusion methods.

[0005] The organic solvent method is one of the main methods for separating lignocellulosic components. There are many types of organic solvents that can be used to separate lignocellulosic biomass, including organic acids / esters, high / low boiling point alcohols, etc. In the organic solvent method, catalysts can play an important role in improving reaction efficiency and promoting the decomposition of intermediates.

[0006] Patent CN103088686B discloses a process for preparing pulp from lignocellulosic biomass and producing biochar in parallel. Under the catalytic action of hydrogen peroxide, formic acid and acetic acid are used to cook biomass raw materials to prepare pulp, and cellulose products and biochar products are obtained. However, acidic solvents such as formic acid and acetic acid will have a certain degree of damage to the cellulose structure and are corrosive to the equipment.

[0007] Patent CN106674538B discloses a method for separating and extracting cellulose, hemicellulose degradable sugars and lignin from bamboo. Bamboo is used as raw material, and a solvent system consisting of γ-valerolactone, acid and water is used. The process is treated at a certain temperature to separate cellulose, hemicellulose degradable sugars and lignin. Compared with other solvents, γ-valerolactone can be directly processed from cellulose or hemicellulose in wood fiber biomass raw materials. Therefore, it is green, sustainable, recyclable, non-toxic and harmless. However, the solvent cost is high, and the boiling point is high, so the solvent recovery cost is high. Summary of the invention

[0008] The purpose of the present invention is to solve the problem that organic acid solvents are destructive to cellulose structure and corrosive to equipment, and that γ-valerolactone is expensive as a solvent and the solvent recovery cost is high, and to provide a separation method for treating lignocellulosic biomass components using an organic solution.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is:

[0010] The present invention discloses a method for separating lignocellulosic biomass components by treating them with an organic solution, comprising the following steps:

[0011] The first step is steaming

[0012] A continuous digester is used for extraction. The biomass raw material is cut into pieces with a length of 3-6 cm, washed, and dusted. The broken biomass raw material is fed into the continuous digester through a high-pressure feeder. An extraction solvent is added while feeding the biomass raw material. The solid-liquid mass ratio of the biomass raw material to the extraction solvent is 1:2-1:10. The raw material is boiled at a temperature of 120-180°C for 40-120 minutes to dissolve the lignin in the raw material into the liquid phase. The cellulose still exists in a solid form. The solid-liquid mixture is used as a slurry for standby use.

[0013] The second step is to remove the slag and wash the screen

[0014] The pulp obtained in the first step is concentrated by a double-roll pulping machine to obtain a lignin-containing solution, which is used as a cooking rich solution for later use. After concentration, the pulp is deslagging and knot removal is performed, and then the pulp is washed by a three-stage double-roll pulp washer. A pulp washing solvent is added during the washing process, and the mass ratio of the pulp washing solvent to the pulp is 1:1-1:4. After washing, the pulp is dried by a degassing machine until the moisture content is ≤10% to obtain a cellulose solid product, and the solution obtained by washing is used as a washing rich solution for later use;

[0015] Step 3: Solvent Recovery

[0016] The cooking rich liquid and the washing rich liquid from the second step are subjected to rectification, flash evaporation, and rotary film evaporation to recover the extraction solvent and the pulp washing solvent, and obtain a lignin solid product;

[0017] The washing rich liquid first enters the No. 1 distillation tower, and a washing solution of organic solvent and water is obtained at the top of the No. 1 distillation tower, which is sent to the washing process for recycling after heat exchange cooling. The mixed solution of lignin and pulp washing solvent obtained at the bottom of the tower is mixed with the cooking rich liquid and then enters the flash tower. In the flash tower, a mixed solution of pulp washing solvent and water is obtained at the top of the tower. After entering the No. 2 distillation tower, a pulp washing solvent solution is obtained at the bottom of the distillation tower and sent to the cooking process for recycling. A part of the top product of the No. 2 distillation tower is refluxed, and the other part is sent to the No. 3 distillation tower after being pressurized by a pump. The bottom product of the No. 3 distillation tower is wastewater containing a small amount of organic solvent and pulp washing solvent solution, which is sent to wastewater treatment after being pressurized by a pump. In addition to a part of the top product being refluxed, the other part is pumped to the top of the No. 2 tower for re-distillation;

[0018] A lignin solution containing a certain amount of pulp washing solvent and water is obtained at the bottom of the flash tower, which is pressurized by a pump and sent to a rotary film evaporator. In the rotary film evaporator, the light components of the pulp washing solvent and water are evaporated and then the gas phase enters the No. 2 distillation tower for further distillation; the lignin from the rotary film evaporator falls by gravity and is then formed and cooled to obtain a lignin product.

[0019] Preferably, the extraction solvent is composed of 60-70% by mass of an organic solvent and 40-30% by mass of an auxiliary agent.

[0020] Preferably, the organic solvent is any one of alcohols such as ethanol, n-propanol, isopropanol, isobutanol, n-pentanol, and n-hexanol; ketones such as methyl ethyl ketone, acetone, dipropyl ketone, methyl n-butyl ketone, methyl isobutyl ketone, and methyl tert-butyl ketone; and ethers such as diethyl ether, methyl ethyl ether, methyl propyl ether, methyl n-butyl ether, methyl isobutyl ether, and methyl tert-butyl ether.

[0021] Preferably, the auxiliary agent is a combination of at least two of diols such as ethylene glycol, propylene glycol, 1,4-butanediol, sulfoxides such as dimethyl sulfoxide, thionyl chloride, diphenyl sulfoxide, anilines such as aniline, hydroxyaniline, acetanilide, and aldehydes such as furfural and 5-hydroxymethylfurfural.

[0022] Preferably, the pulp washing solvent is any one of ethanol, n-propanol and isopropanol.

[0023] Preferably, the biomass raw material is any one of bamboo, reed, wheat straw, corn straw, rice straw, bark and leaves, or a mixture of two of them.

[0024] Compared with the prior art, the present invention has the following advantages and positive effects:

[0025] First, this method utilizes an alcohol solution system, which can achieve the separation of cellulose and lignin in biomass raw materials under mild conditions, and can solve the problems that organic acid solvents can damage the cellulose structure and are corrosive to the equipment, while the cost of γ-valerolactone as a solvent is high and the cost of solvent recovery is high.

[0026] Second, alcohols can also be used as solvents in the organic solvent method to treat biomass to achieve biomass component separation. Alcohol solvents will not destroy the cellulose structure and are not corrosive to the equipment. The solvent cost is low and the solvent recovery cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0028] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below by means of specific examples.

[0030] Example 1

[0031] like Figure 1 As shown, the method for separating lignocellulosic biomass components by treating them with an organic solution in this embodiment comprises the following steps:

[0032] The first step is steaming

[0033] A continuous digester is used for extraction. The biomass raw material is cut into pieces with a length of 3 cm, washed, and dusted. The broken biomass raw material is fed into the continuous digester through a high-pressure feeder. The extraction solvent is added while the biomass raw material is fed. The solid-liquid mass ratio of the biomass raw material to the extraction solvent is 1:2-1:10. The raw material is boiled at a boiling temperature of 120°C for 40 minutes to dissolve the lignin in the raw material into the liquid phase. The cellulose still exists in a solid form. The solid-liquid mixture is used as a slurry for standby use.

[0034] The second step is to remove the slag and wash the screen

[0035] The pulp obtained in the first step is concentrated by a double-roll pulping machine to obtain a lignin-containing solution, which is used as a cooking rich solution for later use. After concentration, the pulp is deslagging and knot removal is performed, and then the pulp is washed by a three-stage double-roll pulp washer. A pulp washing solvent is added during the washing process, and the mass ratio of the pulp washing solvent to the pulp is 1:1-1:4. After washing, the pulp is dried by a degassing machine until the moisture content is ≤10% to obtain a cellulose solid product, and the solution obtained by washing is used as a washing rich solution for later use;

[0036] Step 3: Solvent Recovery

[0037] The cooking rich liquid and the washing rich liquid from the second step are subjected to rectification, flash evaporation, and rotary film evaporation to recover the extraction solvent and the pulp washing solvent, and obtain a lignin solid product;

[0038] The washing rich liquid first enters the No. 1 distillation tower, and a washing solution of organic solvent and water is obtained at the top of the No. 1 distillation tower, which is sent to the washing process for recycling after heat exchange cooling. The mixed solution of lignin and pulp washing solvent obtained at the bottom of the tower is mixed with the cooking rich liquid and then enters the flash tower. In the flash tower, a mixed solution of pulp washing solvent and water is obtained at the top of the tower. After entering the No. 2 distillation tower, a pulp washing solvent solution is obtained at the bottom of the distillation tower and sent to the cooking process for recycling. A part of the top product of the No. 2 distillation tower is refluxed, and the other part is sent to the No. 3 distillation tower after being pressurized by a pump. The bottom product of the No. 3 distillation tower is wastewater containing a small amount of organic solvent and pulp washing solvent solution, which is sent to wastewater treatment after being pressurized by a pump. In addition to a part of the top product being refluxed, the other part is pumped to the top of the No. 2 tower for re-distillation;

[0039] A lignin solution containing a certain amount of pulp washing solvent and water is obtained at the bottom of the flash tower, which is pressurized by a pump and sent to a rotary film evaporator. In the rotary film evaporator, the light components of the pulp washing solvent and water are evaporated and then the gas phase enters the No. 2 distillation tower for further distillation; the lignin from the rotary film evaporator falls by gravity and is then formed and cooled to obtain a lignin product.

[0040] The extraction solvent described in this embodiment is composed of 60% by mass of ethanol and 40% by mass of ethylene glycol and propylene glycol.

[0041] The pulp washing solvent described in this embodiment is ethanol.

[0042] The biomass raw material described in this embodiment is bamboo.

[0043] Example 2

[0044] like Figure 1 As shown, the method for separating lignocellulosic biomass components by treating them with an organic solution in this embodiment comprises the following steps:

[0045] The first step is steaming

[0046] A continuous digester is used for extraction. The biomass raw material is cut into pieces with a length of 6 cm, washed, and dusted. The broken biomass raw material is fed into the continuous digester through a high-pressure feeder. An extraction solvent is added while feeding the biomass raw material. The solid-liquid mass ratio of the biomass raw material to the extraction solvent is 1:2-1:10. The raw material is boiled at a temperature of 180°C for 40-120 minutes to dissolve the lignin in the raw material into the liquid phase. The cellulose still exists in a solid form. The solid-liquid mixture is used as a slurry for standby use.

[0047] The second step is to remove the slag and wash the screen

[0048] The pulp obtained in the first step is concentrated by a double-roll pulping machine to obtain a lignin-containing solution, which is used as a cooking rich solution for later use. After concentration, the pulp is deslagging and knot removal is performed, and then the pulp is washed by a three-stage double-roll pulp washer. A pulp washing solvent is added during the washing process, and the mass ratio of the pulp washing solvent to the pulp is 1:1-1:4. After washing, the pulp is dried by a degassing machine until the moisture content is ≤10% to obtain a cellulose solid product, and the solution obtained by washing is used as a washing rich solution for later use;

[0049] Step 3: Solvent Recovery

[0050] The cooking rich liquid and the washing rich liquid from the second step are subjected to rectification, flash evaporation, and rotary film evaporation to recover the extraction solvent and the pulp washing solvent, and obtain a lignin solid product;

[0051] The washing rich liquid first enters the No. 1 distillation tower, and a washing solution of organic solvent and water is obtained at the top of the No. 1 distillation tower, which is sent to the washing process for recycling after heat exchange cooling. The mixed solution of lignin and pulp washing solvent obtained at the bottom of the tower is mixed with the cooking rich liquid and then enters the flash tower. In the flash tower, a mixed solution of pulp washing solvent and water is obtained at the top of the tower. After entering the No. 2 distillation tower, a pulp washing solvent solution is obtained at the bottom of the distillation tower and sent to the cooking process for recycling. A part of the top product of the No. 2 distillation tower is refluxed, and the other part is sent to the No. 3 distillation tower after being pressurized by a pump. The bottom product of the No. 3 distillation tower is wastewater containing a small amount of organic solvent and pulp washing solvent solution, which is sent to wastewater treatment after being pressurized by a pump. In addition to a part of the top product being refluxed, the other part is pumped to the top of the No. 2 tower for re-distillation;

[0052] A lignin solution containing a certain amount of pulp washing solvent and water is obtained at the bottom of the flash tower, which is pressurized by a pump and sent to a rotary film evaporator. In the rotary film evaporator, the light components of the pulp washing solvent and water are evaporated and then the gas phase enters the No. 2 distillation tower for further distillation; the lignin from the rotary film evaporator falls by gravity and is then formed and cooled to obtain a lignin product.

[0053] The extraction solvent described in this embodiment is composed of 70% by weight of an organic solvent and 30% by weight of an auxiliary agent.

[0054] The organic solvent described in this embodiment is isobutyl alcohol.

[0055] The auxiliary agent described in this embodiment is a combination of diols such as 1,4-butanediol and dimethyl sulfoxide.

[0056] The pulp washing solvent described in this embodiment is n-propanol.

[0057] The biomass raw material described in this embodiment is reed.

[0058] Example 3

[0059] like Figure 1 As shown, the method for separating lignocellulosic biomass components by treating them with an organic solution in this embodiment comprises the following steps:

[0060] The first step is steaming

[0061] A continuous digester is used for extraction. The biomass raw material is cut into pieces with a length of 5 cm, washed, and dusted. The broken biomass raw material is fed into the continuous digester through a high-pressure feeder. The extraction solvent is added while the biomass raw material is fed. The solid-liquid mass ratio of the biomass raw material to the extraction solvent is 1:2-1:10. The raw material is boiled at a temperature of 160°C for 80 minutes to dissolve the lignin in the raw material into the liquid phase. The cellulose still exists in a solid form. The solid-liquid mixture is used as a slurry for standby use.

[0062] The second step is to remove the slag and wash the screen

[0063] The pulp obtained in the first step is concentrated by a double-roll pulping machine to obtain a lignin-containing solution, which is used as a cooking rich solution for later use. After concentration, the pulp is deslagging and knot removal is performed, and then the pulp is washed by a three-stage double-roll pulp washer. A pulp washing solvent is added during the washing process, and the mass ratio of the pulp washing solvent to the pulp is 1:1-1:4. After washing, the pulp is dried by a degassing machine until the moisture content is ≤10% to obtain a cellulose solid product, and the solution obtained by washing is used as a washing rich solution for later use;

[0064] Step 3: Solvent Recovery

[0065] The cooking rich liquid and the washing rich liquid from the second step are subjected to rectification, flash evaporation, and rotary film evaporation to recover the extraction solvent and the pulp washing solvent, and obtain a lignin solid product;

[0066] The washing rich liquid first enters the No. 1 distillation tower, and a washing solution of organic solvent and water is obtained at the top of the No. 1 distillation tower, which is sent to the washing process for recycling after heat exchange cooling. The mixed solution of lignin and pulp washing solvent obtained at the bottom of the tower is mixed with the cooking rich liquid and then enters the flash tower. In the flash tower, a mixed solution of pulp washing solvent and water is obtained at the top of the tower. After entering the No. 2 distillation tower, a pulp washing solvent solution is obtained at the bottom of the distillation tower and sent to the cooking process for recycling. A part of the top product of the No. 2 distillation tower is refluxed, and the other part is sent to the No. 3 distillation tower after being pressurized by a pump. The bottom product of the No. 3 distillation tower is wastewater containing a small amount of organic solvent and pulp washing solvent solution, which is sent to wastewater treatment after being pressurized by a pump. In addition to a part of the top product being refluxed, the other part is pumped to the top of the No. 2 tower for re-distillation;

[0067] A lignin solution containing a certain amount of pulp washing solvent and water is obtained at the bottom of the flash tower, which is pressurized by a pump and sent to a rotary film evaporator. In the rotary film evaporator, the light components of the pulp washing solvent and water are evaporated and then the gas phase enters the No. 2 distillation tower for further distillation; the lignin from the rotary film evaporator falls by gravity and is then formed and cooled to obtain a lignin product.

[0068] Preferably, the extraction solvent consists of 65% by mass of an organic solvent and 35% by mass of an auxiliary agent.

[0069] The organic solvent described in this embodiment is n-pentanol.

[0070] The auxiliary agent described in this embodiment is a combination of sulfoxides such as thionyl chloride and diphenyl sulfoxide and aldehydes such as furfural and 5-hydroxymethylfurfural.

[0071] The pulp washing solvent described in this embodiment is isopropanol.

[0072] The biomass raw material described in this embodiment is wheat straw.

[0073] The organic solvent in the above-mentioned Examples 1 to 3 can also be any one of alcohols such as n-propanol, isopropanol, and n-hexanol, ketones such as methyl ethyl ketone, acetone, dipropyl ketone, methyl n-butyl ketone, methyl isobutyl ketone, and methyl tert-butyl ketone, and ethers such as diethyl ether, methyl ethyl ether, methyl propyl ether, methyl n-butyl ether, methyl isobutyl ether, and methyl tert-butyl ether.

[0074] The auxiliary agent is any combination of at least two of diols such as ethylene glycol, propylene glycol, 1,4-butanediol, sulfoxides such as dimethyl sulfoxide, thionyl chloride, diphenyl sulfoxide, anilines such as aniline, hydroxyaniline, acetanilide, and aldehydes such as furfural and 5-hydroxymethylfurfural.

[0075] The biomass raw material can also be any one of corn straw, rice straw, tree bark and leaves, or a mixture of any two of bamboo, reed, wheat straw, corn straw, rice straw, tree bark and leaves.

[0076] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for separating lignocellulosic biomass components by treating them with an organic solution, characterized in that: The following steps are involved: The first step is steaming A continuous digester is used for extraction. The biomass raw material is cut into pieces with a length of 3-6 cm, washed, and dusted. The broken biomass raw material is fed into the continuous digester through a high-pressure feeder. An extraction solvent is added while feeding the biomass raw material. The solid-liquid mass ratio of the biomass raw material to the extraction solvent is 1:2-1:

10. The raw material is boiled at a temperature of 120-180°C for 40-120 minutes to dissolve the lignin in the raw material into the liquid phase. The cellulose still exists in a solid form. The solid-liquid mixture is used as a slurry for standby use. The second step is to remove the slag and wash the screen The pulp obtained in the first step is concentrated by a double-roll pulping machine to obtain a lignin-containing solution, which is used as a cooking rich solution for later use. After concentration, the pulp is deslagging and knot removal is performed, and then the pulp is washed by a three-stage double-roll pulp washer. A pulp washing solvent is added during the washing process, and the mass ratio of the pulp washing solvent to the pulp is 1:1-1:

4. After washing, the pulp is dried by a degassing machine until the moisture content is ≤10% to obtain a cellulose solid product, and the solution obtained by washing is used as a washing rich solution for later use; Step 3: Solvent Recovery The cooking rich liquid and the washing rich liquid from the second step are subjected to rectification, flash evaporation, and rotary film evaporation to recover the extraction solvent and the pulp washing solvent, and obtain a lignin solid product; The washing rich liquid first enters the No. 1 distillation tower, and a washing solution of organic solvent and water is obtained at the top of the No. 1 distillation tower, which is sent to the washing process for recycling after heat exchange cooling. The mixed solution of lignin and pulp washing solvent obtained at the bottom of the tower is mixed with the cooking rich liquid and then enters the flash tower. In the flash tower, a mixed solution of pulp washing solvent and water is obtained at the top of the tower. After entering the No. 2 distillation tower, a pulp washing solvent solution is obtained at the bottom of the distillation tower and sent to the cooking process for recycling. A part of the top product of the No. 2 distillation tower is refluxed, and the other part is sent to the No. 3 distillation tower after being pressurized by a pump. The bottom product of the No. 3 distillation tower is wastewater containing a small amount of organic solvent and pulp washing solvent solution, which is sent to wastewater treatment after being pressurized by a pump. In addition to a part of the top product being refluxed, the other part is pumped to the top of the No. 2 tower for re-distillation; A lignin solution containing a certain amount of pulp washing solvent and water is obtained at the bottom of the flash tower, which is pressurized by a pump and sent to a rotary film evaporator. In the rotary film evaporator, the light components of the pulp washing solvent and water are evaporated and then the gas phase enters the No. 2 distillation tower for further distillation; the lignin from the rotary film evaporator falls by gravity and is then formed and cooled to obtain a lignin product.

2. The method for separating lignocellulosic biomass components by treating them with an organic solution according to claim 1, characterized in that: The extraction solvent is composed of 60-70% by weight of an organic solvent and 40-30% by weight of an auxiliary agent.

3. The method for separating lignocellulosic biomass components by treating them with an organic solution according to claim 1, characterized in that: The organic solvent is any one of alcohols such as ethanol, n-propanol, isopropanol, isobutanol, n-pentanol, and n-hexanol; ketones such as methyl ethyl ketone, acetone, dipropyl ketone, methyl n-butyl ketone, methyl isobutyl ketone, and methyl tert-butyl ketone; and ethers such as diethyl ether, methyl ethyl ether, methyl propyl ether, methyl n-butyl ether, methyl isobutyl ether, and methyl tert-butyl ether.

4. The method for separating components of lignocellulosic biomass by treating it with an organic solution according to claim 1, characterized in that: The auxiliary agent is a combination of at least two of diols such as ethylene glycol, propylene glycol, 1,4-butanediol, sulfoxides such as dimethyl sulfoxide, thionyl chloride, diphenyl sulfoxide, anilines such as aniline, hydroxyaniline, acetanilide, and aldehydes such as furfural and 5-hydroxymethylfurfural.

5. The method for separating lignocellulosic biomass components by treating them with an organic solution according to claim 1, characterized in that: The pulp washing solvent is any one of ethanol, n-propanol and isopropanol.

6. The method for separating lignocellulosic biomass components by treating them with an organic solution according to claim 1, characterized in that: The biomass raw material is any one of bamboo, reed, wheat straw, corn straw, rice straw, bark and leaves, or a mixture of two of them.

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