Modification additive for waste solid fuel or biomass pellet fuel and application of modification additive

Abstract

The invention discloses a modification additive for waste solid fuel or biomass pellet fuel, and the formula raw materials of the modification additive comprise an iron / manganese-containing cement component, which is one or a combination of cement and steel slag cement, iron oxide and / or manganese oxide-containing cement, red pottery clay, iron oxide, iron ore powder, manganese ore powder, manganese oxide and aluminum industry red mud, and the iron / manganese-containing cement component is one or a combination of iron / manganese-containing cement and steel slag cement, iron oxide and / or manganese oxide-containing cement, red pottery clay, iron oxide, iron ore powder, manganese ore powder, manganese oxide and aluminum industry red mud. And the iron / manganese-containing cement component accounts for 50%-100% of the weight of the modification auxiliary agent. The application of the modification additive comprises the following steps: blending the nano waste solid fuel or the biomass granular fuel with the modification additive according to the weight ratio of (90-95): (5-10), uniformly mixing, and extruding and forming into a rod shape, a block shape or a fine granular shape by a grinding roller, so as to obtain the modified nano waste solid fuel or the biomass granular fuel. The invention provides a modification additive suitable for waste solid fuel or biomass pellet fuel, and also discloses application of the modification additive in preparation of solid fuel, and solves the problems of coking, smoking, difficult granulation with high water content, poor water dispersion resistance and the like in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste resource utilization, and specifically provides a modification auxiliary agent for waste solid fuel or biomass pellet fuel and its application, which solves the problems of coking, smoking, difficulty in granulating with high moisture content, and poor water dispersion resistance in solid waste fuel production. Background Art

[0002] In my country, the use of solid waste to produce solid fuel products has gradually become an industrial direction of the circular economy. However, the industry has also encountered many difficulties in the development and utilization of solid waste to produce fuels in recent years.

[0003] For example, fuel rods or blocks pressed from miscellaneous waste plastics have at least two major defects when they are put into combustion in the furnace. First, black smoke is emitted from the flame during combustion, which not only greatly increases the workload of the smoke removal device of the combustion furnace, but also causes a large amount of smoke and fly ash rich in toxic components such as polycyclic aromatic hydrocarbons in the smoke removal process equipment; second, this type of fuel will always emit char slag like burning coal, and no powdery ash like incense ash will be obtained.

[0004] For example, although the sludge obtained from sewage purification contains organic combustible components, its calorific value is usually only below 2200 kcal / kg dry basis. If the water-containing sludge is directly put into the furnace for combustion, the calorific value it contains is not enough to burn out the water carried by the sludge.

[0005] For example, when using biomass such as straw and waste wood to make pellet fuel, it is difficult to granulate when the water content of the material is above 25%. If it is necessary to add anti-coking and other modifying additives to the crushed material to be extruded and granulated, there will be serious dust flying in the workshop and other process difficulties that restrict clean production. Summary of the Invention

[0006] The present invention provides a modification auxiliary agent suitable for waste solid fuel or biomass pellet fuel, and also discloses the use of the modification auxiliary agent in the preparation of solid fuel, overcoming the problems of coking, smoking, difficulty in granulation with high moisture content, poor water dispersion resistance, etc. in the prior art.

[0007] For the modification additive, the technical solution of this application is:

[0008] A modification aid for waste solid fuel or biomass pellet fuel, wherein the raw materials of the modification aid include an iron / manganese-containing cement component, which is a combination of cement and one or more of steel slag cement, cement containing iron oxide and / or manganese oxide, red clay, iron oxide, iron ore powder, manganese ore powder, manganese oxide, and aluminum red mud; the weight proportion of the iron / manganese-containing cement component in the modification aid is 50%-100%. During preparation, the ingredients are mixed in a closed manner after being proportioned, and then bagged; or the ingredients are mixed in a closed manner after being rolled and granulated, and then bagged.

[0009] Furthermore, the raw materials of the modification auxiliary agent also include physical fillers; the weight proportion of the physical fillers in the modification auxiliary agent does not exceed 50%; the physical fillers include one or more of coal slag, fly ash, coal gangue, vermiculite powder, calcium carbonate, quicklime, biomass fuel combustion ash / coking residue, and waste plastic / rubber combustion coking residue.

[0010] Furthermore, the raw materials of the modified additive also include a hydrophobic agent, which accounts for 1%-10% of the total weight of the additive; the hydrophobic agent comprises one or more of mineral / plant oils, esters, waxes or edible oil production waste, and oilfield sludge, and is used to prevent the modified additive from solidifying too quickly when it comes into contact with water and to suppress the flying of its dust.

[0011] Furthermore, the raw materials of the modified auxiliary agent also include a hydrophilic adhesive auxiliary agent, which accounts for no more than 50% of the total weight of the auxiliary agent; the hydrophilic adhesive auxiliary agent includes any one or more combinations of methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, and ethyl cellulose, or / and any one or more combinations of polyvinyl alcohol, polyacrylic acid and its esters, polyvinyl acetate, a copolymer of styrene and acrylic acid ester monomers, and a butyl acrylate-styrene copolymer; the hydrophilic adhesive auxiliary agent enables the granulated material to be granulated without a drying process when the water content is 25%-27%.

[0012] Regarding the application of the modification aid, the present invention provides the following technical solutions:

[0013] The application of the modification auxiliary agent for waste solid fuel or biomass particle fuel of the present invention is to mix the waste solid fuel or biomass particle fuel with the modification auxiliary agent in a weight ratio of 90-95:5-10, mix them evenly, and then extrude them into rods, blocks or granular strips through rollers to obtain modified waste solid fuel or biomass particle fuel.

[0014] Furthermore, in the above application, the finished product of the waste solid fuel or biomass pellet fuel obtained by granulation after adding the modification additive can have the following physical properties:

[0015] When burning in a stove with secondary air inlet, no black flames will come out of the stove mouth;

[0016] Water immersion resistance: It will not break apart after being soaked in room temperature water for 1 to 10 hours;

[0017] Compressive strength: φ8mm strip particles compressive strength ≥1.5MPa;

[0018] It can burn to ash without charring.

[0019] Furthermore, in the above application, the raw materials for preparing the waste solid fuel include miscellaneous waste plastics discarded by the recycling industry and sludge discarded by water purification in workshops.

[0020] Furthermore, in the above application, the waste solid fuel or biomass granular fuel obtained by granulation after mixing with a modification additive is used as fuel in the production process of cement, clay bricks, expanded clay, glazed expanded clay, foamed glazed expanded clay or glass, and the fuel ash is incorporated into the formula of the fired product.

[0021] Furthermore, in the above application, the ingredients of the waste solid fuel are: selected ingredient I and selected ingredient II, or selected ingredient I, selected ingredient II and selected ingredient III;

[0022] The optional material I is a solid waste with no calorific value or / and low calorific value with a combustion calorific value in the range of 0 to 2200 kcal / kg, including at least one or more of: oil sludge, river sludge, domestic sewage purification sludge, water purification sludge discarded by the printing and dyeing industry, sewage purification sludge discarded by the slaughtering industry, wastewater purification sludge discarded by dye / pigment enterprises, sewage purification sludge rich in calcium carbonate discarded by the papermaking industry, and water purification sludge discarded by the waste paper recycling industry and plastic film recycling industry; the weight percentage of the material is W. Ⅰ 0-20 copies;

[0023] The optional material II is a medium / high calorific value solid waste with a combustion calorific value in the range of 2500 to 8000 kcal / kg, including at least one or more of: miscellaneous waste plastics, miscellaneous waste leather, miscellaneous waste chemical fiber, miscellaneous waste rubber / glue, blue coal, petroleum coke, waste activated carbon, and oil residue / soap nuts discarded from edible oil production; the weight portion thereof is W Ⅱ 10-70 servings;

[0024] The optional material III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, fermented and deodorized materials of livestock and poultry manure, abandoned straw from grain / cotton / oil agricultural fields, deodorized materials of biogas residues after aerobic fermentation, and crushed materials of domestic garbage after decontamination / fermentation; the weight of the material is W Ⅲ 0-70 copies;

[0025] W Ⅰ 、W Ⅱ 、W Ⅲ The total amount of the modification aid is 90-95 parts by weight, and the amount of the modification aid is W 改 5-10 parts by weight, W Ⅰ 、W Ⅱ 、W Ⅲ 、W 改 The total amount is 100 parts by weight.

[0026] Furthermore, in the above application, the ingredients of the biomass pellet fuel are: optional ingredient III; the optional ingredient III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: broken and crushed materials of any one or more combinations of waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, palm fruit stalks, and straw discarded from grain / cotton / oil agricultural fields; the weight of the ingredients is W Ⅲ The dosage of the modification aid is 90-95 parts. 改 5-10 parts by weight, W Ⅲ 、W 改 The total amount is 100 parts by weight.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] 1. Add at least iron / manganese to the additive to catalyze the oxidation of carbon nuclei during the flameless dark combustion stage after the fuel releases organic volatiles, so that they are fully burned to ash.

[0029] 2. Use solid waste with high ash content or high ash content and low calorific value as physical dilution filler, so that the compacted solid fuel contains a large number of pores that can easily contact oxygen in the air, so as to facilitate the catalytic oxidation of carbon by the valence-changing iron / manganese particles, so that the carbon can be finally oxidized and burned without coking.

[0030] 2. Adding hydrophilic adhesive to the modified additive makes it unnecessary to go through the process of heating and drying even when the water content is in the range of 25%-27%, thereby achieving the purpose of roller extrusion granulation or rod block pressing even at a higher water content.

[0031] 3. Adding cement to the modified additives can make the waste solid fuel or biomass pellet fuel remain solid after being formed, even when it encounters rain or dew, and it has both rain / dew resistance and water dispersion resistance.

[0032] 4. Adding a hydrophobic agent to the modified additive can prevent it from solidifying too quickly when it comes into contact with water and can inhibit its dust-raising properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 : Image of waste solid fuel ingredients that have been added with modification additives and are about to enter the pelletizing process.

[0034] Figure 2 : Image of biomass waste wood powder material that has been added with modification additives and is about to enter the pelletizing process.

[0035] Figure 3 : Figure 1 Image of the solid fuel pellets obtained after the waste solid fuel ingredients are processed by the roller extrusion granulator.

[0036] Figure 4 : Figure 3 The waste solid fuel particles in the reactor are ignited in the air, burning smokelessly and turning into ash.

[0037] Figure 5 : Figure 4 An image of the dark burning state of the solid fuel particles in the waste gas after burning to no flame.

[0038] Figure 6 : Figure 5 Image of ash after the spent solid fuel particles in the nanostructured fuel are completely burned.

[0039] Figure 7 : Figure 2 The images of the water immersion resistance comparison test of the biomass pellet fuel obtained by adding the modification additive and granulating and the ordinary biomass pellet fuel without adding the modification additive at room temperature are shown in the figure. Figure 7 (a) is a biomass pellet fuel obtained by adding a modification aid and granulating. Figure 7 (b) is ordinary biomass pellet fuel without adding modification additives.

[0040] Figure 8 : Image of a biomass combustion furnace with a secondary air inlet mechanism (with distributed air holes on the furnace wall for air intake).

[0041] Figure 9 :use Figure 8 The biomass combustion furnace shown burns waste solid fuel particles, presenting an image of a smokeless phenomenon. DETAILED DESCRIPTION

[0042] The present application is further described below with reference to the accompanying drawings and examples, but is not intended to limit the present application. In the following examples, any content not described in detail or not shown in detail in the accompanying drawings is common knowledge in the art.

[0043] The present invention provides a modification auxiliary agent for waste solid fuel or biomass pellet fuel, which is described below from the perspectives of proportion, preparation method, application, etc.

[0044] 1. Components and ratios of modification additives:

[0045] Iron / manganese-containing cement, accounting for 50-100% by weight; selected from a combination of cement and one or more of steel slag cement, cement containing iron oxide and / or manganese oxide, red clay, iron oxide, iron ore powder, manganese ore powder, manganese oxide, and red mud discarded from the aluminum industry;

[0046] Physical filler, accounting for 0%-50% by weight; selected from one or more of coal slag, fly ash, coal gangue, vermiculite powder, calcium carbonate, quicklime, combustion ash powder / coking slag of biomass pellet fuel, and combustion coking slag of miscellaneous plastics / waste rubber briquettes / rod solid fuel;

[0047] A hydrophobic agent, accounting for 1-10% by weight; selected from one or more of mineral / plant oils, esters, waxes, soap stock / bleaching waste clay / waste activated carbon sludge discarded from edible oil production, and oilfield sludge;

[0048] The hydrophilic adhesive additive accounts for 0%-50% by weight; it is selected from any one or more combinations of carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, and ethyl cellulose, and / or any one or more combinations of polyvinyl alcohol, polyacrylic acid and its esters, polyvinyl acetate, copolymers of styrene and acrylic acid ester monomers, and butyl acrylate-styrene copolymers.

[0049] The benefits of this formulation of modification additives are:

[0050] The addition of iron / manganese-containing cement components has a dual role: on the one hand, it can form a cementitious skeleton through cement hydration reaction, thereby improving the compressive strength of the molded fuel; on the other hand, the iron / manganese-containing components can catalyze the oxidation of carbon nuclei during the flameless dark combustion stage after the fuel releases organic volatiles, causing them to fully burn to ash, thus avoiding coking problems.

[0051] The purpose of adding a filler component is to insert a waste-carrying component into the additive formula and to make the fuel contain a large number of pores that can easily contact oxygen in the air.

[0052] The addition of water-repellent components has a dual effect: first, it can prevent the cement-containing modifier from prematurely agglomerating and solidifying due to moisture during storage and transportation; second, it can give the fuel good water immersion resistance after being added to the fuel product.

[0053] The function of adding the hydrophilic glue component is that when the moisture content of the material before granulation is as high as 25%-27% (if a high-viscosity hydrophilic glue is used, the moisture content can even reach 30%-33%), it can assist granulation through the property of hydrogen bonding to wrap water molecules and maintain the compressive strength of the particles.

[0054] 2. Preparation method of modified additives:

[0055] The ingredients are mixed in a sealed manner and then bagged; or the ingredients are mixed in a sealed manner, rolled into granules, and then bagged.

[0056] 3. Application of modification additives:

[0057] See also Figure 1-9In specific applications, the weight of waste solid fuel or biomass pellet fuel W 燃 and weight of modified additive W 改 After mixing, the material is subjected to conventional roller extrusion to form thick rods / blocks or fine strips; or the newly granulated material is allowed to stand for about 5 hours and then bagged after the cement component in the material has hardened.

[0058] The selected ingredients for waste solid fuel are: selected ingredient I and selected ingredient II, or selected ingredient I, selected ingredient II and selected ingredient III;

[0059] The optional material I is a solid waste with no calorific value or / and low calorific value with a combustion calorific value in the range of 0 to 2200 kcal / kg, including at least one or more of: oil sludge, river sludge, domestic sewage purification sludge, water purification sludge discarded by the printing and dyeing industry, sewage purification sludge discarded by the slaughtering industry, wastewater purification sludge discarded by dye / pigment enterprises, sewage purification sludge rich in calcium carbonate discarded by the papermaking industry, and water purification sludge discarded by the waste paper recycling industry and plastic film recycling industry; the weight percentage of the material is W. Ⅰ No more than 20 copies;

[0060] The optional material II is a medium / high calorific value solid waste with a combustion calorific value in the range of 2500 to 8000 kcal / kg, including at least one or more of: miscellaneous waste plastics, miscellaneous waste leather, miscellaneous waste chemical fiber, miscellaneous waste rubber / glue, blue coal, petroleum coke, waste activated carbon, and oil residue / soap nuts discarded from edible oil production; the weight portion thereof is W Ⅱ 10-70 servings;

[0061] The optional material III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, fermented and deodorized materials of livestock and poultry manure, abandoned straw from grain / cotton / oil agricultural fields, deodorized materials of biogas residues after aerobic fermentation, and crushed materials of domestic garbage after decontamination / fermentation; the weight of the material is W Ⅲ No more than 70 copies;

[0062] W Ⅰ 、W Ⅱ 、W Ⅲ The total amount of the modified additive W is 90-95 parts by weight, and the amount of the modified additive W is changed to 5-10 parts by weight, W Ⅰ 、W Ⅱ 、W Ⅲ 、W 改 The total amount is 100 parts by weight.

[0063] The obtained solid product of "waste solid fuel" in the form of rods / blocks can spontaneously combust into gray-white ash powder after being ignited in ordinary air (see attached Figure 4 、 5 , 6); When burning in a stove with two air inlets, the flame at the mouth of the stove does not emit black flames (see attached Figure 8 、 9 ); see Figure 7 After being squeezed into a rod / block solid product for 2 days, it will not break into powder after being exposed to rain / dew. The corresponding quality inspection control indicator for this item is: the bare particles of the product will not be dispersed after being soaked in room temperature water for at least 1 to 10 hours.

[0064] Among them, the optional ingredients of biomass pellet fuel are: optional ingredient III; the optional ingredient III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: broken and crushed materials of any one or more combinations of waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, palm fruit stalks, and abandoned straw from grain / cotton / oil agricultural fields; the weight of the ingredients is W Ⅲ The dosage of the modification aid is 90-95 parts. 改 5-10 parts by weight, W Ⅲ The total of W is 100 parts by weight.

[0065] The obtained "biomass pellet fuel" is a thin solid product that can spontaneously combust into gray-white ash powder when ignited in ordinary air, and no black smoke can be seen from the flame (see attached Figure 4 、 5 , 6); It is burned in a stove with at least two air inlets, and the flame at the mouth of the stove does not emit black flames (see attached Figure 8 、 9 ); After being squeezed into thin strips, the solid product will not break up into powder after being exposed to rain or dew for 2 days. The corresponding quality inspection control indicator for this item is: the bare particles of the product will not be dispersed after being soaked in room temperature water for at least 10 hours.

[0066] When the present invention is implemented, it can be connected with the industry that uses the waste plastic film materials discarded by the waste paper recycling industry to make recycled plastic particles, so as to help such industries to consume the water-settled waste plastics discharged in production and the sludge discarded by the recycled water purification.

[0067] The waste solid fuel modified by the present invention is at least suitable for cement, clay bricks, ceramsite, glazed ceramsite, foamed glazed ceramsite, glass, and other silicate products that can incorporate fuel ash into the product formula and use it as fuel in the firing process. The reason for recommending this use is that: after testing, the heavy metal content in the fuel ash exceeds the limit of GB15618-2018 "Soil Environmental Quality Agricultural Land Soil Pollution Risk Management Standard (Trial)". Therefore, it is recommended to be used for the production of silicate products that can consume fuel ash to minimize the impact of ash on the environment.

[0068] The above general description of the invention and the description of its specific embodiments involved in this application should not be understood as limiting the technical solutions of the invention. Based on the disclosure of this application, those skilled in the art may, without violating the constituent elements of the invention involved, add, subtract, or combine the disclosed technical features in the above general description and / or specific embodiments (including examples) to form other technical solutions within the scope of protection of this application.

Claims

1. A modification agent for waste solid fuel or biomass pellet fuel, characterized by: The raw materials of the modification additive include an iron / manganese-containing cement component, which is a combination of cement and one or more of steel slag cement, cement containing iron oxide and / or manganese oxide, red clay, iron oxide, iron ore powder, manganese ore powder, manganese oxide, and aluminum red mud; the iron / manganese-containing cement component accounts for 50% to 100% by weight in the modification additive; During preparation, the ingredients are mixed according to the proportion, and then packed into bags; or the ingredients are mixed according to the proportion, and then rolled into granules and then packed into bags.

2. The modification aid for waste solid fuel or biomass pellet fuel according to claim 1, characterized in that: The raw materials of the modification auxiliary agent also include physical fillers; the weight proportion of the physical fillers in the modification auxiliary agent does not exceed 50%; the physical fillers include one or more of coal slag, fly ash, coal gangue, vermiculite powder, calcium carbonate, quicklime, biomass fuel combustion ash / coking residue, and waste plastic / rubber combustion coking residue.

3. The modification aid for waste solid fuel or biomass pellet fuel according to claim 1 or 2, characterized in that: The raw materials of the modified additive also include a hydrophobic agent, which accounts for 1%-10% of the total weight of the additive; the hydrophobic agent comprises one or more of mineral / plant oils, esters, waxes or edible oil production waste, and oilfield sludge, and is used to prevent the modified additive from solidifying too quickly when it comes into contact with water and to suppress the flying of its dust.

4. The modification aid for waste solid fuel or biomass pellet fuel according to claim 1 or 2, characterized in that: The raw materials of the modified auxiliary agent also include a hydrophilic adhesive auxiliary agent, which accounts for no more than 50% of the total weight of the auxiliary agent; the hydrophilic adhesive auxiliary agent includes any one or more of methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, and ethyl cellulose, or / and any one or more of polyvinyl alcohol, polyacrylic acid and its esters, polyvinyl acetate, a copolymer of styrene and acrylic ester monomers, and a butyl acrylate-styrene copolymer; the hydrophilic adhesive auxiliary agent enables the granulation of the granulated material without a drying process when the water content is 25%-27%.

5. The use of the modification aid according to claim 1, characterized in that: The application is to mix the waste solid fuel or biomass particle fuel with the modification auxiliary agent in a weight ratio of 90-95:5-10, and after mixing, roll and extrude the mixture into rods, blocks or granules to obtain modified waste solid fuel or biomass particle fuel.

6. The use of the modification aid according to claim 5, characterized in that: The finished product of waste solid fuel or biomass pellet fuel obtained by granulation after mixing with modification additives has the following physical properties: When burning in a stove with secondary air inlet, no black flames will come out of the stove mouth; Water immersion resistance: It will not break apart after being soaked in room temperature water for 1 to 10 hours; Compressive strength: φ8mm strip particles compressive strength ≥1.5MPa; It can burn to ash without charring.

7. The use of the modification aid according to claim 5, characterized in that: The raw materials for preparing the waste solid fuel include miscellaneous waste plastics discarded by the recycling industry and sludge discarded by water purification in workshops.

8. The use of the modification aid according to claim 5, characterized in that: The waste solid fuel or biomass granular fuel obtained by granulating after mixing with modification additives is used as fuel in the production process of cement, clay bricks, expanded clay, glazed expanded clay, foamed glazed expanded clay or glass firing, and the fuel ash is incorporated into the formula of the fired product.

9. The use of the modification aid according to claim 5, characterized in that: The ingredients of the waste solid fuel are: ingredient I and ingredient II, or ingredient I, ingredient II and ingredient III; The optional material I is a solid waste with no calorific value or / and low calorific value with a combustion calorific value in the range of 0 to 2200 kcal / kg, including at least one of: oilfield sludge, river sludge, domestic sewage purification sludge, water purification sludge discarded by the printing and dyeing industry, sewage purification sludge discarded by the slaughtering industry, wastewater purification sludge discarded by dye / pigment enterprises, sewage purification sludge discarded by the papermaking industry rich in calcium carbonate, and water purification sludge discarded by the waste paper recycling industry and miscellaneous waste plastic film recycling industry; the weight percentage of the material is W Ⅰ 0-20 copies; The optional material II is a medium / high calorific value solid waste with a combustion calorific value in the range of 2500 to 8000 kcal / kg, including at least one or more of: miscellaneous waste plastics, miscellaneous waste leather, miscellaneous waste chemical fiber, miscellaneous waste rubber / glue, blue coal, petroleum coke, waste activated carbon, and oil residue / soap nuts discarded from edible oil production; the weight portion thereof is W Ⅱ 10-70 servings; The optional material III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, fermented and deodorized materials of livestock and poultry manure, abandoned straw from grain / cotton / oil agricultural fields, deodorized materials of biogas residues after aerobic fermentation, and crushed materials of domestic garbage after decontamination / fermentation; the weight of the material is W Ⅲ 0-70 copies; W Ⅰ 、W Ⅱ 、W Ⅲ The total amount of the modification aid is 90-95 parts by weight, and the amount of the modification aid is W 改 5-10 parts by weight, W Ⅰ 、W Ⅱ 、W Ⅲ 、W 改 The total amount is 100 parts by weight.

10. The use of the modification aid according to claim 5, characterized in that: The ingredients of the biomass pellet fuel are: optional ingredient III; the optional ingredient III is a medium calorific value biomass solid waste with a combustion calorific value in the range of 2500 to 4800 kcal / kg, including at least: broken and crushed materials of any one or more combinations of waste wood, weeds, tree roots, rice husks, Chinese medicine residues, corn cobs, corn husks, dead branches / fallen leaves, palm fruit stalks, and abandoned straw from grain / cotton / oil agricultural fields; the weight of the ingredients is W Ⅲ The dosage of the modification aid is 90-95 parts. 改 5-10 parts by weight, W Ⅲ 、W 改 The total amount is 100 parts by weight.

Images