Method for preparing biomass type coal adhesive from boghead coal and co-producing biomass type coal and organic fertilizer

Abstract

The invention discloses a method for preparing a biomass type coal adhesive from boghead coal and co-producing biomass type coal and an organic fertilizer, which comprises the following steps of: crushing boghead coal, adding alkaline liquor to boil, keeping the temperature, standing, and taking supernate as the biomass type coal adhesive; mixing corn straws, coal gangue with soft coal after crushing, adding the biomass type coal adhesive, solid sulphur and a waterproof agent, after uniformly mixing the biomass type coal adhesive, the solid sulphur and the waterproof agent with water, and extruding, forming and drying through a forming machine to obtain biomass type coal; and filtering biomass type coal adhesive preparation residues, adjusting pH, adding cow dung to ferment, and dosing, pelleting and drying to obtain the organic fertilizer. According to the invention, the abundant boghead coal resource in inner Mongolia is utilized for developing cheap adhesive; the biomass type coal, which has the advantages of being low in cost, high in sulphur content, moisture-proof and water-resistant and is applicable to an industrial furnace, is developed by utilizing abundant coal gangue resource and corn straw resource; and residues after preparing the biomass type coal adhesive from boghead coal are used for preparing the organic fertilizer, and therefore, the method disclosed by the invention is capable of saving energy, reducing emission, reducing the production cost of the biomass type coal, and increasing the additional value of boghead coal and the utilization rate of coal gangue.

Description

technical field

[0001] The invention relates to a method for preparing biomass briquette binder from peat to jointly produce biomass briquette and organic fertilizer, and belongs to the application field of clean and effective utilization of coal. Background technique

[0002] The pattern of my country's energy industry is "lack of oil, little gas, and rich coal". This resource endowment characteristic and my country's current industrial-based economic model determine the important position of coal in the industrial system. Due to the rapid development of China's economy, energy consumption has surged. In 2010, energy consumption accounted for 20.3% of the total global energy consumption, surpassing the United States to become the world's largest energy consumer, of which coal consumption accounted for 48.3% of the global total. Despite the rapid growth of new energy sources, coal is still the main energy source in China, which is difficult to change in the short term, causi...

Examples

Embodiment 1

[0023] The peat is crushed to 2mm, and 4 times the volume of the peat is added with a sodium hydroxide solution with a mass fraction of 3% at 85°C for 1h, and then kept at 90°C for 3 hours. The supernatant is the biomass briquette binder. Take 25% by mass of corn stalk, 10% by mass of coal gangue and 50% by mass of bituminous coal, crushed to 3 mm and mixed, and added 10% by mass of biomass briquette binder, 5% by mass of limestone, and a mixture of magnesium oxide (mixture). The mass fraction of medium limestone is 60%, and the rest is magnesium oxide), after mixing with 20ml of water evenly, extrusion molding at 20 MPa in a molding machine, and drying at 120 °C for 2 hours to obtain biomass briquette. The calorific value of biomass briquette is 4750 kcal / kg, The compressive strength is 830N / piece, the drop strength is 88.0%, the water-drying strength is 237N / piece, and the sulfur fixation rate is 78%. After 28 days of aerobic composting of cow dung with a residue mass fracti...

Embodiment 2

[0025] The peat is crushed to 3mm, and the sodium hydroxide solution with a mass fraction of 2%, which is twice the mass of the peat, is added to cook at 90°C for 1 hour, and then kept at 90°C for 2.5 hours. The supernatant is the biomass briquette binder. 20% by mass of corn stalk, 10% by mass of coal gangue and 55% by mass of bituminous coal are crushed to 3mm and mixed, and 10% by mass of biomass briquette binder, 5% by mass of limestone, and a mixture of magnesium chloride (limestone in the mixture) are added. mass fraction of 65%, and the rest is magnesium chloride), mixed with 25ml of water evenly, extruded by a molding machine at 25 MPa, and dried at 110 °C for 2 hours to obtain biomass briquette. 760N / piece, 98.0% drop strength, 180N / piece water-drying strength, 61% sulfur fixation rate; filter the residue prepared by the biomass briquette adhesive, add slaked lime to adjust the pH to 7, and add an amount equivalent to the quality of the residue After 30 days of aerobi...

Embodiment 3

[0027]The peat was crushed to 4mm, and the calcium hydroxide solution with a mass fraction of 3 times the volume of the peat was added to cook at 100°C for 3 hours, and the supernatant was kept at 90°C for 3 hours. The supernatant was the biomass briquette binder; mass fraction 20% corn stalks, 10% coal gangue and 60% bituminous coal are crushed to 3 mm and mixed, and 5% biomass briquette binder, 5% limestone, magnesium chloride, and magnesium oxide mixture (in the mixture) are added. Limestone mass fraction of 45%, magnesium oxide mass fraction of 25%, magnesium chloride mass fraction of 25%), mixed with 30ml of water uniformly, extruded by a molding machine at 25 MPa, and dried at 120 °C for 2 hours to obtain biomass briquette, biomass briquette The calorific value is 4950 kcal / kg, the compressive strength is 730N / piece, the drop strength is 95.0%, the water-drying strength is 205N / piece, and the sulfur fixation rate is 68%. After adjusting the pH to 7.5, adding cow dung wit...

technical field

[0001] The invention relates to a method for preparing biomass briquette binder from peat to jointly produce biomass briquette and organic fertilizer, and belongs to the application field of clean and effective utilization of coal. Background technique

[0002] The pattern of my country's energy industry is "lack of oil, little gas, and rich coal". This resource endowment characteristic and my country's current industrial-based economic model determine the important position of coal in the industrial system. Due to the rapid development of China's economy, energy consumption has surged. In 2010, energy consumption accounted for 20.3% of the total global energy consumption, surpassing the United States to become the world's largest energy consumer, of which coal consumption accounted for 48.3% of the global total. Despite the rapid growth of new energy sources, coal is still the main energy source in China, which is difficult to change in the short term, causi...

Examples

Embodiment 1

[0023] The peat is crushed to 2mm, and 4 times the volume of the peat is added with a sodium hydroxide solution with a mass fraction of 3% at 85°C for 1h, and then kept at 90°C for 3 hours. The supernatant is the biomass briquette binder. Take 25% by mass of corn stalk, 10% by mass of coal gangue and 50% by mass of bituminous coal, crushed to 3 mm and mixed, and added 10% by mass of biomass briquette binder, 5% by mass of limestone, and a mixture of magnesium oxide (mixture). The mass fraction of medium limestone is 60%, and the rest is magnesium oxide), after mixing with 20ml of water evenly, extrusion molding at 20 MPa in a molding machine, and drying at 120 °C for 2 hours to obtain biomass briquette. The calorific value of biomass briquette is 4750 kcal / kg, The compressive strength is 830N / piece, the drop strength is 88.0%, the water-drying strength is 237N / piece, and the sulfur fixation rate is 78%. After 28 days of aerobic composting of cow dung with a residue mass fracti...

Embodiment 2

[0025] The peat is crushed to 3mm, and the sodium hydroxide solution with a mass fraction of 2%, which is twice the mass of the peat, is added to cook at 90°C for 1 hour, and then kept at 90°C for 2.5 hours. The supernatant is the biomass briquette binder. 20% by mass of corn stalk, 10% by mass of coal gangue and 55% by mass of bituminous coal are crushed to 3mm and mixed, and 10% by mass of biomass briquette binder, 5% by mass of limestone, and a mixture of magnesium chloride (limestone in the mixture) are added. mass fraction of 65%, and the rest is magnesium chloride), mixed with 25ml of water evenly, extruded by a molding machine at 25 MPa, and dried at 110 °C for 2 hours to obtain biomass briquette. 760N / piece, 98.0% drop strength, 180N / piece water-drying strength, 61% sulfur fixation rate; filter the residue prepared by the biomass briquette adhesive, add slaked lime to adjust the pH to 7, and add an amount equivalent to the quality of the residue After 30 days of aerobi...

Embodiment 3

[0027]The peat was crushed to 4mm, and the calcium hydroxide solution with a mass fraction of 3 times the volume of the peat was added to cook at 100°C for 3 hours, and the supernatant was kept at 90°C for 3 hours. The supernatant was the biomass briquette binder; mass fraction 20% corn stalks, 10% coal gangue and 60% bituminous coal are crushed to 3 mm and mixed, and 5% biomass briquette binder, 5% limestone, magnesium chloride, and magnesium oxide mixture (in the mixture) are added. Limestone mass fraction of 45%, magnesium oxide mass fraction of 25%, magnesium chloride mass fraction of 25%), mixed with 30ml of water uniformly, extruded by a molding machine at 25 MPa, and dried at 120 °C for 2 hours to obtain biomass briquette, biomass briquette The calorific value is 4950 kcal / kg, the compressive strength is 730N / piece, the drop strength is 95.0%, the water-drying strength is 205N / piece, and the sulfur fixation rate is 68%. After adjusting the pH to 7.5, adding cow dung wit...

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