A method for producing light oil by liquefaction of coal and biomass

Abstract

The invention relates to the technical field of clean energy, and particularly relates to a blending process of coal and biomass. The invention provides a method for producing light oil by liquefyingcoal and biomass. Treatments of grinding, compression and regrinding are carried out on coal and biomass raw materials, then slurry is prepared, biomass coal oil slurry which has a high solid contentand can be stably conveyed by a pump is successfully obtained, and high-viscosity waste oil which cannot be used as a liquefaction solvent of coal and biomass in the prior art can also be utilized. The method can ensure that the coal and the biomass are fully liquefied to liquid phases through twice liquefaction reactions, and the yield of liquid oil is improved. The yield of light oil is furtherimproved by subsequent separation and hydrogenation steps, particularly the yield of low-distillation-range oil such as naphtha and the like in the light oil is improved, and the residue content of subsequent light oil is reduced.

Description

technical field

[0001] The invention relates to the technical field of clean energy, in particular to a co-smelting process of coal and biomass. Background technique

[0002] At present, my country uses coal as the main energy source, and the traditional coal utilization method is combustion, but the problem of air pollution caused by coal combustion has become increasingly serious; moreover, the quality of coal in my country has declined year by year, which has increased the proportion of raw coal washed year after year, and coal washing wastewater has brought severe water pollution. Severe environmental problems have made the adjustment of energy structure one of the important tasks of my country's energy development. However, my country's own energy resource storage is poor in oil and rich in coal, and it already needs to rely on a large amount of oil imports every year to meet the needs of production and development. If the country's energy structure is adjusted by reduc...

Examples

Embodiment 1

[0091] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, such as figure 1 and figure 2 shown, including the following steps:

[0092] Pretreatment of biomass raw materials:

[0093] (1) Take soybean oil residue, dry and dehydrate it, and then send it to airflow mill 201 for crushing to obtain primary crushed material of soybean oil residue, particle size D50 is 100 μm.

[0094] (2) The primary crushed material of soybean oil residue is sent to the plodder 202 for extrusion molding at a molding pressure of 2 MPa to obtain a compressed material of soybean oil residue.

[0095] (3) Send the compressed material of soybean oil residue into a hammer mill for secondary crushing to obtain the secondary crushed material of soybean oil residue, particle size D 50 50 μm, ready for use.

[0096] Pretreatment of coal raw materials:

[0097] (1) Get lignite, dry and dehydrate it, then send it into ball mill 207 for pulverization, and ob...

Embodiment 2

[0112] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, comprising the following steps:

[0113] Pretreatment of biomass raw materials:

[0114] (1) Get the reed, dry and dehydrate it, and then send it to the jet mill for crushing to obtain the primary crushed material of the reed, with a particle size of D 50 is 300 μm.

[0115] (2) Send the reed primary pulverized material into a plodder for extrusion molding, and the molding pressure is 5 MPa to obtain the reed compressed material.

[0116] (3) The reed compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the reed secondary pulverization material, particle size D 50 30 μm, set aside.

[0117] Pretreatment of coal raw materials:

[0118] (1) Take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing to obtain primary crushed material of Shendong long-flame coal, particle size D 50 is 50...

Embodiment 3

[0133] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, comprising the following steps:

[0134] Pretreatment of biomass raw materials:

[0135] (1) Get the leaves, dry and dehydrate them, and then send them to the jet mill for crushing to obtain primary crushed leaves with a particle size of D 50 is 200 μm.

[0136] (2) Send the primary pulverized material of the leaves into a briquetting machine or a plodder for extrusion molding with a molding pressure of 3 MPa to obtain compressed leaves.

[0137] (3) The leaf compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the secondary pulverized material of the leaf, particle diameter D 50 40 μm, set aside.

[0138] Pretreatment of coal raw materials:

[0139] (1) Take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing to obtain primary crushed material of Shendong long-flame coal, particle ...

technical field

[0001] The invention relates to the technical field of clean energy, in particular to a co-smelting process of coal and biomass. Background technique

[0002] At present, my country uses coal as the main energy source, and the traditional coal utilization method is combustion, but the problem of air pollution caused by coal combustion has become increasingly serious; moreover, the quality of coal in my country has declined year by year, which has increased the proportion of raw coal washed year after year, and coal washing wastewater has brought severe water pollution. Severe environmental problems have made the adjustment of energy structure one of the important tasks of my country's energy development. However, my country's own energy resource storage is poor in oil and rich in coal, and it already needs to rely on a large amount of oil imports every year to meet the needs of production and development. If the country's energy structure is adjusted by reduc...

Examples

Embodiment 1

[0091] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, such as figure 1 and figure 2 shown, including the following steps:

[0092] Pretreatment of biomass raw materials:

[0093] (1) Take soybean oil residue, dry and dehydrate it, and then send it to airflow mill 201 for crushing to obtain primary crushed material of soybean oil residue, particle size D50 is 100 μm.

[0094] (2) The primary crushed material of soybean oil residue is sent to the plodder 202 for extrusion molding at a molding pressure of 2 MPa to obtain a compressed material of soybean oil residue.

[0095] (3) Send the compressed material of soybean oil residue into a hammer mill for secondary crushing to obtain the secondary crushed material of soybean oil residue, particle size D 50 50 μm, ready for use.

[0096] Pretreatment of coal raw materials:

[0097] (1) Get lignite, dry and dehydrate it, then send it into ball mill 207 for pulverization, and ob...

Embodiment 2

[0112] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, comprising the following steps:

[0113] Pretreatment of biomass raw materials:

[0114] (1) Get the reed, dry and dehydrate it, and then send it to the jet mill for crushing to obtain the primary crushed material of the reed, with a particle size of D 50 is 300 μm.

[0115] (2) Send the reed primary pulverized material into a plodder for extrusion molding, and the molding pressure is 5 MPa to obtain the reed compressed material.

[0116] (3) The reed compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the reed secondary pulverization material, particle size D 50 30 μm, set aside.

[0117] Pretreatment of coal raw materials:

[0118] (1) Take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing to obtain primary crushed material of Shendong long-flame coal, particle size D 50 is 50...

Embodiment 3

[0133] This embodiment provides a method for producing light oil by liquefaction of coal and biomass, comprising the following steps:

[0134] Pretreatment of biomass raw materials:

[0135] (1) Get the leaves, dry and dehydrate them, and then send them to the jet mill for crushing to obtain primary crushed leaves with a particle size of D 50 is 200 μm.

[0136] (2) Send the primary pulverized material of the leaves into a briquetting machine or a plodder for extrusion molding with a molding pressure of 3 MPa to obtain compressed leaves.

[0137] (3) The leaf compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the secondary pulverized material of the leaf, particle diameter D 50 40 μm, set aside.

[0138] Pretreatment of coal raw materials:

[0139] (1) Take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing to obtain primary crushed material of Shendong long-flame coal, particle ...

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