CN110643405A - Biomass briquette fuel binder and preparation method and addition mode thereof - Google Patents
Biomass briquette fuel binder and preparation method and addition mode thereof Download PDFInfo
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- CN110643405A CN110643405A CN201911002523.9A CN201911002523A CN110643405A CN 110643405 A CN110643405 A CN 110643405A CN 201911002523 A CN201911002523 A CN 201911002523A CN 110643405 A CN110643405 A CN 110643405A
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- mixture
- biomass
- binder
- biomass briquette
- oil sludge
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to the technical field of biomass briquette fuels, in particular to a biomass briquette fuel binder, a preparation method and an addition mode thereof, wherein the biomass briquette fuel binder is obtained according to the following method: mixing oil sludge and kaolin, uniformly stirring and drying to obtain a first mixture; mixing and stirring the first mixture and the oil sludge with the same mass in the first step to obtain a second mixture; and grinding and sieving the second mixture to obtain the biomass briquette fuel binder. The biomass briquette fuel binder is simple and convenient in preparation method and wide in raw material source, the obtained biomass briquette fuel binder can improve the strength and the heat value of the biomass briquette fuel and reduce the molding energy consumption of the briquette fuel, and meanwhile, the kaolinite component contained in the binder can capture alkali metal and alkaline earth metal elements in ash during combustion, so that the ash melting point of the biomass fuel is improved, slagging contamination and particle release during combustion of a biomass boiler are effectively inhibited, and a new way is provided for resource utilization of oil sludge.
Description
Technical Field
The invention relates to the technical field of biomass briquette fuels, in particular to a biomass briquette fuel binder and a preparation method and an addition mode thereof.
Background
As a clean renewable energy source, the formed fuel of the biomass has the outstanding advantages of high energy density, convenience in transportation and storage, capability of replacing lump coal and the like, so that the biomass has wide application prospects, but the current formed fuel has the problems of poor physical properties, high forming energy consumption, slag bonding and contamination of combustion boilers, particle release and the like caused by high alkali metal content.
Oil sludge is a by-product of oil recovery and is difficult to utilize effectively. Because of its cohesiveness and high heat value, it can be used as the agglomerant of biomass briquette. However, the viscosity of the biomass is very high, and the biomass is not easy to be uniformly mixed with the crushed biomass raw material, so that viscosity reduction treatment is required, and a dispersant is required during viscosity reduction, so that secondary pollution is caused to the environment, and the cost of oil sludge waste utilization is increased.
Kaolin as a clay comprises kaolinite as the main component, and has a theoretical chemical composition of 46.54% of SiO239.5% of Al2O313.96% of H2O and kaolin can capture Na, K and other volatile alkali metals in ash in the combustion process of the formed fuel to generate NaAlSi2O6And K AlSi2O6And high melting point compounds. But the simple addition of kaolin reduces the calorific value of the shaped fuel,is not beneficial to the popularization and the application of the molding fuel.
Disclosure of Invention
The invention provides a biomass briquette fuel binder, a preparation method and an addition mode thereof, overcomes the defects of the prior art, and can effectively solve the problems of low ash fusion point, serious slag bonding and contamination of a boiler and excessive particle release of the binder in the prior art.
One of the technical schemes of the invention is realized by the following measures: the biomass briquette fuel binder is prepared from raw materials including ridge soil, oil sludge and water according to the following method: step one, mixing oil sludge and kaolin according to a mass ratio of 1-2: 1, uniformly stirring, and drying at 20-100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20-100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
the oil sludge is one of tank bottom oil sludge, ground overflow oil sludge and oil-containing sludge of an oil refinery.
The water content of the oil sludge is 10 to 40%.
The first mixture and the second mixture are ground and sieved by a sieve with 60-200 meshes.
The second technical scheme of the invention is realized by the following measures: a preparation method of a biomass briquette binder is prepared according to the following steps: step one, mixing oil sludge and kaolin according to a mass ratio of 1-2: 1, uniformly stirring, and drying at 20-100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20-100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
The oil sludge is one of tank bottom oil sludge, ground overflow oil sludge and oil-containing sludge of an oil refinery.
The water content of the oil sludge is 10 to 40%.
The first mixture and the second mixture are ground and sieved by a sieve with 60-200 meshes.
The third technical scheme of the invention is realized by the following measures: an adding mode of a biomass briquette binder is characterized in that the biomass briquette binder, water and biomass are uniformly mixed according to the ratio of 1:2: 17, and the mixture is pressed and molded to obtain the molded granular fuel.
The third technical scheme of the invention is further optimized or/and improved as follows:
the biomass is crushed single agricultural and forestry waste or a mixture of multiple wastes.
The biomass briquette fuel binder is simple and convenient in preparation method and wide in raw material source, the obtained biomass briquette fuel binder can improve the strength and the heat value of the biomass briquette fuel and reduce the molding energy consumption of the briquette fuel, and meanwhile, the kaolinite component contained in the binder can capture alkali metal elements in ash during combustion, so that the ash melting point of the biomass fuel is improved, the slagging contamination and the particulate matter release of biomass boiler combustion are effectively inhibited, and a new way is provided for the resource utilization of oil sludge.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention. The various chemical reagents and chemical articles mentioned in the invention are all the chemical reagents and chemical articles which are well known and commonly used in the prior art, unless otherwise specified; the percentages in the invention are mass percentages unless otherwise specified; the solution in the present invention is an aqueous solution in which the solvent is water, for example, a hydrochloric acid solution is an aqueous hydrochloric acid solution, unless otherwise specified; the normal temperature and room temperature in the present invention generally mean a temperature of 15 ℃ to 25 ℃, and are generally defined as 25 ℃.
The invention is further described below with reference to the following examples:
example 1: the biomass briquette fuel binder is prepared from raw materials including ridge soil, oil sludge and water according to the following method: step one, mixing oil sludge and kaolin according to a mass ratio of 1-2: 1, uniformly stirring, and drying at 20-100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20-100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
According to the biomass briquette fuel binder, kaolin and oil sludge are used as raw materials to prepare the biomass briquette fuel binder, oil refining byproduct oil sludge which is difficult to treat and the kaolin are mixed and solidified according to a certain proportion, and the mixture is ground and sieved to prepare the binder, so that resource utilization of the oil sludge is realized, meanwhile, the caking components contained in the oil sludge can improve the durability of the briquette fuel, and the briquette fuel forming energy consumption is reduced. The kaolinite component contained in the binder can trap alkali metal elements in ash during combustion, thereby improving the ash melting point, and reducing the problems of slagging contamination and particulate matter release of a boiler. The biomass briquette binder has low cost, obviously improves the forming performance of briquettes, and has certain industrial application value. The biomass briquette fuel has the advantages of improving the strength and the heat value of the biomass briquette fuel, reducing the molding energy consumption, improving the ash fusion point of the biomass fuel, effectively inhibiting slag bonding and contamination of biomass boiler combustion and releasing particulate matters, and providing a new way for the resource utilization of oil sludge.
Example 2: the biomass briquette fuel binder is prepared from raw materials including ridge soil, oil sludge and water according to the following method: firstly, mixing oil sludge and kaolin according to the mass ratio of 1 or 2:1, uniformly stirring, and drying at 20 ℃ or 100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at 20 ℃ or 100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
Example 3: as optimization of the above embodiment, the oil sludge is one of tank bottom oil sludge, ground overflow oil sludge and oil-containing sludge of an oil refinery.
Example 4: as an optimization of the above embodiment, the water content of the sludge is 10% to 40%.
Example 5: as an optimization of the above embodiment, the first mixture and the second mixture are ground and sieved with 60-200 mesh sieve holes.
Example 6: the addition mode of the biomass briquette fuel binder is that the biomass briquette fuel binder, water and biomass are uniformly mixed according to the proportion of 1:2: 17, and the mixture is pressed and molded to obtain the molded granular fuel.
Example 7: as an optimization of the above embodiment, the biomass is a single agricultural and forestry waste or a mixture of a plurality of wastes that are pulverized.
Example 8: the biomass briquette fuel binder is prepared by the following method: step one, mixing tank bottom oil sludge and kaolin according to a mass ratio of 1:1, uniformly stirring, and drying at 20 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the tank bottom oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20 ℃ to obtain a second mixture; and thirdly, grinding the second mixture and sieving the ground mixture with a 70-mesh sieve to obtain the biomass briquette fuel binder.
Example 9: the biomass briquette fuel binder is prepared by the following method: step one, mixing the oil sludge falling to the ground and kaolin according to the mass ratio of 2:1, uniformly stirring, and drying at 50 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at 50 ℃ to obtain a second mixture; and thirdly, grinding the second mixture and sieving the ground mixture with a 70-mesh sieve to obtain the biomass briquette fuel binder.
Example 10: the biomass briquette fuel binder is prepared by the following method: step one, mixing oil-containing sludge of an oil refinery with kaolin according to the mass ratio of 1:1, uniformly stirring, and drying at 100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil refinery oily sludge with the same mass in the step one uniformly, and drying at the temperature of 100 ℃ to obtain a second mixture; and thirdly, grinding the second mixture and sieving the ground mixture with a 70-mesh sieve to obtain the biomass briquette fuel binder.
Example 11: the biomass briquette fuel binder is prepared by the following method: step one, mixing and uniformly stirring ground overflow oil sludge and kaolin according to a mass ratio of 2:1, and drying at 100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the same mass of ground overflow oil sludge in the step one uniformly, and drying at the temperature of 100 ℃ to obtain a second mixture; and thirdly, grinding the second mixture and sieving the ground mixture with a 70-mesh sieve to obtain the biomass briquette fuel binder.
The biomass briquette fuel binder obtained in examples 8 to 11 was uniformly mixed with water and cotton straw in a ratio of 1:2: 17, compression molded at 80 ℃ to obtain briquette fuel, and drop strength test was performed with 100% cotton straw, using national standard for drop strength test of coal (GB/T15459-1995), the briquette fuel dropped freely on a steel plate of a certain thickness two meters from a test stand, each fuel dropped three times, and finally the mass of the fuel body after dropping and the mass of the fuel body before dropping, that is, the drop strength, were obtained. Tests show that the drop strength of the formed granular fuel prepared by adding the biomass forming fuel binder is 96.3-99.4%, and the drop strength of the formed fuel prepared by 100% of cotton straws is 95.6-96.8%, so that the drop strengths of the formed granular fuel prepared by adding the biomass forming fuel binder, water and the cotton straws are higher than that of the formed granular fuel prepared by adding the biomass forming fuel binder and the cotton straws by 100%.
Pulverized cotton straws were subjected to hot press molding, and compared with molded pellet fuels to which 5% biomass molding fuel binder obtained in examples 10 and 11 was added, the combustion performance thereof was analyzed, and the influence of the addition of the biomass molding fuel binder on the combustion characteristics of the molded pellet fuels was obtained as shown in table 1. The test adopts thermogravimetric SDT-Q600 to test, and the molded granular fuel is ground into a uniform spherical shape before the test, so that errors caused by irregular shapes are avoided. The heating rates of the two samples were all 10 ℃/min.
As can be seen from Table 1, the combustion time of the molded pellet fuel was increased and the temperature range T of the whole combustion process was found to be increased by using the biomass molding fuel binderbThe combustion time is obviously prolonged, the maximum weight loss temperature is increased, the overall combustion performance is close to that of coal, and the coal can be directly combusted in boilers such as power plants and the like as alternative fuel of the coal.
The biomass briquette fuel binder obtained in examples 8 to 11 was uniformly mixed with water and corn stover in a ratio of 1:2: 17, compression molded at 80 ℃ to obtain briquette fuels, and drop strength tests were performed with 100% corn stover, using national standards for drop strength tests of coal (GB/T15459-1995), dropping freely on a steel plate of a certain thickness two meters from a test stand, each fuel dropping three times, and the mass of the fuel body after dropping and the mass of the fuel body before dropping, that is, the drop strength, were finally obtained. Tests show that the drop strength of the formed granular fuel prepared by adding the biomass formed fuel binder is 98.6-99.7%, and the drop strength of the formed fuel prepared by 100% of corn straws is 97.8-98.9%, so that the drop strengths of the formed granular fuel prepared by adding the biomass formed fuel binder, water and the corn straws are higher than that of the 100% of corn straws.
Pulverized corn straws were subjected to hot press molding, and compared with the molding fuel to which 5% of the biomass molding fuel binder obtained in examples 8 to 11 was added, the combustion performance thereof was analyzed, and the influence of the addition of the biomass molding fuel binder on the combustion characteristics of the molding fuel was obtained as shown in table 2. The test adopts thermogravimetric SDT-Q600 to test, and the formed fuel particles are ground into uniform spherical shapes before the test, so that errors caused by irregular shapes are avoided. Both samples were heated at a rate of 10 deg.C/min.
As can be seen from Table 2, the combustion time of the shaped fuel was increased and the temperature range T of the entire combustion process was found to be increased by using the binder for biomass shaped fuelbThe combustion time is obviously prolonged, the maximum weight loss temperature is increased, the overall combustion performance is close to that of coal, and the coal can be directly combusted in boilers such as power plants and the like as alternative fuel of the coal.
The biomass briquette fuel binders obtained according to 8 to 11 are tested according to the ash fusion test national standard GB/T219-2008, wherein the sum of ash content of the briquettes fuel of 95 percent of corn straws and 5 percent of biomass briquette fuel binders and the ash content of the briquettes fuel of 100 percent of corn straws after combustion is tested, the ash production temperature is 815 ℃, and the test is carried out by using an SDAF2000b type ash fusion tester, and the data is shown in Table 3.
As can be seen from Table 3, the addition of the biomass briquette binder significantly improves the ash meltability of the ash after combustion of the briquette.
The binders in tables 1 to 3 are biomass briquette binder of the present invention.
In conclusion, the preparation method of the biomass briquette binder is simple and convenient, the raw material source is wide, the obtained biomass briquette binder can improve the strength and the heat value of the biomass briquette and also can reduce the forming energy consumption of the briquette, and meanwhile, the kaolinite component contained in the binder can collect alkali metal elements in ash during combustion, so that the ash melting point of the biomass fuel is improved, slagging contamination and particle release of biomass boiler combustion are effectively inhibited, and a new way is provided for resource utilization of oil sludge.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. The biomass briquette fuel binder is characterized in that raw materials comprise ridge soil, oil sludge and water, and are prepared according to the following method: step one, mixing oil sludge and kaolin according to a mass ratio of 1-2: 1, uniformly stirring, and drying at 20-100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20-100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
2. The biomass briquette binder of claim 1, wherein the oil sludge is one of tank bottom oil sludge, oil sludge on the ground, oil sludge overflowing from the ground, and oil-containing sludge from an oil refinery.
3. The biomass briquette fuel binder of claim 1 or 2, characterized in that the water content of the sludge is 10% to 40%.
4. The biomass briquette fuel binder of claim 1, 2 or 3, wherein the first mixture and the second mixture are ground and sieved through 60-200 mesh screens.
5. The preparation method of the biomass briquette fuel binder is characterized by comprising the following steps: step one, mixing oil sludge and kaolin according to a mass ratio of 1-2: 1, uniformly stirring, and drying at 20-100 ℃ to obtain a first mixture; step two, mixing and stirring the first mixture and the oil sludge with the same mass in the step one uniformly, and drying at the temperature of 20-100 ℃ to obtain a second mixture; and thirdly, grinding and sieving the second mixture to obtain the biomass briquette fuel binder.
6. The preparation method of the biomass briquette fuel binder according to claim 5, wherein the oil sludge is one of tank bottom oil sludge, ground overflow oil sludge and oil-containing sludge in oil refineries.
7. The method for preparing the biomass briquette fuel binder according to claim 5 or 6, wherein the water content of the oil sludge is 10 to 40%.
8. The method for preparing the biomass briquette fuel binder according to claim 5, 6 or 7, wherein the mesh openings of the grinding and screening of the first mixture and the second mixture are 60-200 meshes.
9. The adding method of the biomass briquette fuel binder according to any one of claims 1 to 4, characterized in that the biomass briquette fuel binder, water and biomass are uniformly mixed according to the proportion of 1:2: 17, and the mixture is pressed and molded to obtain the molded granular fuel.
10. The addition mode of the biomass briquette fuel binder as set forth in claim 9, characterized in that the biomass is pulverized single agricultural and forestry waste or a mixture of a plurality of wastes.
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| CN201911002523.9A CN110643405A (en) | 2019-10-21 | 2019-10-21 | Biomass briquette fuel binder and preparation method and addition mode thereof |
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Citations (4)
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|---|---|---|---|---|
| JPS5780493A (en) * | 1980-11-10 | 1982-05-20 | Nasa:Kk | Production of solid fuel |
| CN101215487A (en) * | 2008-01-08 | 2008-07-09 | 辽河石油勘探局 | Method for preparing biomass sludging briquette |
| CN102559322A (en) * | 2010-11-29 | 2012-07-11 | 沈阳工程学院 | Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder |
| CN102816621A (en) * | 2012-09-19 | 2012-12-12 | 中国科学院广州能源研究所 | Method for preparing briquette fuels by waste woods in furniture factory |
-
2019
- 2019-10-21 CN CN201911002523.9A patent/CN110643405A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780493A (en) * | 1980-11-10 | 1982-05-20 | Nasa:Kk | Production of solid fuel |
| CN101215487A (en) * | 2008-01-08 | 2008-07-09 | 辽河石油勘探局 | Method for preparing biomass sludging briquette |
| CN102559322A (en) * | 2010-11-29 | 2012-07-11 | 沈阳工程学院 | Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder |
| CN102816621A (en) * | 2012-09-19 | 2012-12-12 | 中国科学院广州能源研究所 | Method for preparing briquette fuels by waste woods in furniture factory |
Non-Patent Citations (1)
| Title |
|---|
| 孙传伯等: "《生物质能源工程》", 30 September 2015, 合肥工业大学出版社 * |
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