CN113186012A - Resource utilization method for preparing granular fuel by using sludge and household garbage - Google Patents

Resource utilization method for preparing granular fuel by using sludge and household garbage Download PDF

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Publication number
CN113186012A
CN113186012A CN202110576017.1A CN202110576017A CN113186012A CN 113186012 A CN113186012 A CN 113186012A CN 202110576017 A CN202110576017 A CN 202110576017A CN 113186012 A CN113186012 A CN 113186012A
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Prior art keywords
sludge
granular fuel
garbage
household garbage
resource utilization
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Inventor
孔令军
何军
方金龙
罗梓峻
白依柔
陈迪云
吕学斌
刘庆岭
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Guangzhou University
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Guangzhou University
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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
    • C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • 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 discloses a resource utilization method for utilizing sewage plant activated sludge as a household garbage granular fuel binder, which comprises the following steps: collecting, drying and crushing activated sludge to obtain dried sludge powder with the particle size of 0.074-1.00 mm, collecting, sorting, drying and crushing household garbage to obtain household garbage particles with the particle size of 0.074-4.00 mm, mixing the dried sludge and the household garbage with different particle sizes and water contents according to a certain proportion, and pressing the mixture into cylindrical particles with the diameter of 6-18mm to obtain the garbage derived granular fuel with high density and regular shape. According to the invention, household garbage and activated sludge are used as raw materials, sludge powder permeates into gaps of garbage particles through extrusion, the contact area between the sludge powder and the garbage particles is increased, the formed granular fuel is obtained through the bonding effect of the sludge, and the recycling approach of the sludge and the household garbage is effectively expanded.

Description

Resource utilization method for preparing granular fuel by using sludge and household garbage
Technical Field
The invention belongs to the technical field of environmental engineering, relates to resource treatment of sludge and household garbage, and particularly relates to a resource utilization method for preparing granular fuel by utilizing sludge and household garbage.
Background
The activated sludge is a residual waste generated after sewage is treated by a sewage treatment plant and mainly comprises primary sedimentation tank sludge and secondary sedimentation tank sludge. In recent years, with the rapid increase in the treatment amount of municipal and industrial wastewater, the production amount of excess sludge as a by-product of sewage treatment has been increased simultaneously and greatly. Since activated sludge contains a large amount of organic matter, activated sludge can be defined as "biosolids," which is considered a "misplaced resource. The key for restricting the resource utilization of the sludge in the past is that the water content of the sludge is high, and the drying of the dewatered sludge is proposed for reducing the sludge amount in various sewage treatment plants nowadays, so that the water content of the sludge is reduced to 40%. The method develops and explores a resource utilization technology of the dried sludge, prepares a functional material by utilizing potential useful resources in the activated sludge, realizes effective treatment of the sludge, solves the problem of environmental pollution caused by the sludge, changes waste into valuable, and is an important problem which is urgently needed to be solved in the field of current environmental engineering.
At present, the method for realizing the resource utilization of the sludge mainly comprises the following steps: building materials, agriculture, pyrolysis energy production, adsorbents, catalysts, etc., but most of these methods currently stay in the research stage, mainly limited by the cost of treatment and the additional risk of secondary pollution.
Along with the increasing importance of the energy and resource treatment of the household garbage, the proportion of the garbage incineration treatment in the garbage comprehensive treatment is increased year by year; however, direct combustion of garbage has the problems of low heat utilization rate, unstable combustion, high secondary pollutant treatment cost and the like. In order to solve the problem, the technology of the refuse derived fuel is developed, more and more attention is paid in recent years, and the forming of the household refuse granular fuel needs high-pressure heating forming, so that the power cost in the production process is high. In view of the above, the invention provides a resource utilization method for preparing sludge/garbage derived granular fuel by using dried sludge as a household garbage granular fuel binder.
Disclosure of Invention
The invention aims to provide a method for preparing granular fuel by using sludge as a domestic garbage binder, which aims to solve the problem that the production power cost of the domestic garbage granular fuel is increased because the domestic garbage granular fuel needs high-pressure hot-press molding in the prior art.
Based on the resource utilization method, the invention provides a resource utilization method for preparing granular fuel by utilizing sludge and household garbage, and particularly, the main components of the granular fuel comprise activated sludge and household garbage.
The activated sludge is the residual waste generated after sewage treatment in a sewage treatment plant, has high water content of generally 60-80 percent and is difficult to directly utilize. Therefore, the activated sludge needs to be dried and crushed to prepare dried sludge with the water content of 10-50%.
Further, the particle size of the crushed dried sludge is 0.074-1.00 mm.
In addition, the household garbage is common organic, inorganic and fiber household waste in life. Specifically, the household garbage provided by the invention comprises:
paper: including newspapers, periodicals, books, wrapping paper, office paper, advertising paper, cartons and toilet paper;
plastics: comprises various plastic bags, plastic packages, disposable plastic lunch boxes, tableware cups and mineral water bottles;
rubber type: comprises toothbrush, toothpaste tube, tyre, rubber, hand warming bag, rubber shoes and leather products;
weaving: comprises clothes, tablecloth, towels, schoolbag, walking shoes and cotton;
wood and bamboo: including wood and bamboo products, branches and leaves, and agricultural and forestry wastes.
Further, the household garbage is subjected to sorting, drying and crushing treatment to prepare household garbage particles with the particle size of 0.074-4.00 mm.
The invention also provides a preparation method of the granular fuel, and specifically, the granular fuel is prepared by mixing the dried sludge and household garbage granules in proportion and then pressing and molding.
Further, the mass percentage of the dried sludge in the mixture is 10-70%.
The invention can lead the dried sludge powder to permeate into the interior of the garbage particles through the pressurization effect, and increase the contact area between the materials so as to improve the bonding acting force. Further, the pressure of the compression molding is 0.5-10 MPa.
Further, pressing the granular fuel into cylindrical granules with the diameter of 6-18 mm.
Compared with the prior art, the invention has the following beneficial effects or advantages:
(1) the invention takes municipal domestic waste and activated sludge of a domestic sewage plant as raw materials, dry sludge with different grain diameters and water contents and domestic waste are mixed according to a certain proportion, and are pressed into cylindrical particles with the diameter of 6-18mm by a pressure forming machine, so as to obtain the garbage-derived granular fuel with high density and regular shape. The pressure forming machine is used for pressurizing to promote the sludge powder to permeate into gaps of garbage particles and activate the adhesive property of extracellular polymers and the like in the sludge, the adhesive effect of the sludge is exerted, the formed particle fuel is obtained, and the recycling way of the sludge and the household garbage is effectively expanded. And through the compression molding technology, the sludge powder is used as the binder for molding the household garbage granular fuel, so that the problem that the cellulose needs to be softened at high temperature in the traditional molding process to be sticky is solved, the production process is simplified, and the production cost is reduced. Through the test of the inventor, after the forming, the drop strength is more than 150, the wear rate is less than 3%, and all physical indexes reach the international standard.
(2) The invention provides a method for preparing activated sludge granules, which takes activated sludge as a raw material component, wherein organic components have flammability, and the activated sludge granules have a bonding effect in the granule forming process through the adhesive property of high-pressure extrusion of the activated sludge; the inorganic matter plays a skeleton supporting role in the combustion process, provides an important supporting structure for the mass transfer of oxygen in the combustion process of the granular fuel, and is favorable for maintaining the continuous combustion of the granular fuel.
(3) The combustion heat value of the granular fuel can reach more than 8000kJ/kg at most, and the combustion heat value meets the requirement of incineration; the granular fuel is cylindrical, the particle size is 6-18mm, the regulation is regular, the structure is stable in the combustion process, and the combustion durability is facilitated.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical aspects of the present invention will be further explained below with reference to the drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the resource utilization method for preparing granular fuel by using sludge and domestic garbage according to the present invention includes the following steps:
the method comprises the following steps: drying and crushing the collected activated sludge to obtain dried sludge with the particle size of 0.074-1.00 mm;
step two: sorting, drying and crushing the collected household garbage to obtain household garbage particles with the particle size of 0.074-4.00 mm;
step three: uniformly mixing the dried sludge prepared in the step one and the household garbage particles prepared in the step two in proportion;
step four: and (4) pressing and forming the mixture obtained in the step three by using a pressure forming machine, wherein the forming pressure is 0.5-10MPa, and thus the granular fuel is obtained.
Wherein the water content of the activated sludge is 60-80%;
the water content of the dried sludge is 10-50%;
the mass ratio of the dried sludge in the mixture is 10-70%;
the domestic garbage comprises: paper: including newspapers, periodicals, books, wrapping paper, office paper, advertising paper, cartons and toilet paper; plastics: comprises various plastic bags, plastic packages, disposable plastic lunch boxes, tableware cups and mineral water bottles; rubber type: comprises toothbrush, toothpaste tube, tyre, rubber, hand warming bag, rubber shoes and leather products; weaving: comprises clothes, tablecloth, towels, schoolbag, walking shoes and cotton; wood and bamboo: including wood and bamboo products, branches and leaves, and agricultural and forestry wastes.
In addition, the physical properties of the granular fuel are analyzed and calculated by analysis methods of elongation, wear rate and drop strength, wherein:
1. the calculation formula of the elongation rate is as follows:
Figure BDA0003084401690000051
in the formula: ER- -particle elongation,%;
Lt-particle length, cm, at time t;
L0-length of the particles at the original moment, cm;
2. the wear rate calculation formula is as follows:
Figure BDA0003084401690000061
in the formula: g- -wear rate,%;
m0-initial total amount of particles;
m-total amount of the mixer after rotation;
3. the drop strength calculation formula is as follows:
Figure BDA0003084401690000062
in the formula: IRI — drop strength;
n- -number of trials;
n- -after N drops, the amount of particle debris (mass greater than 5%).
The method takes municipal domestic waste and activated sludge of a domestic sewage plant as raw materials, the dried sludge with different particle sizes and water contents and the domestic waste are mixed according to a certain proportion, and the mixture is pressed into cylindrical particles with the diameter of 6-18mm by a pressure forming machine, so as to obtain the garbage-derived granular fuel with high density and regular shape. The pressure forming machine is used for pressurizing to promote the sludge powder to permeate into gaps of garbage particles and activate the adhesive property of extracellular polymers and the like in the sludge, the adhesive effect of the sludge is exerted, the formed particle fuel is obtained, and the recycling way of the sludge and the household garbage is effectively expanded. Through the pressure forming technology, the sludge powder is used as the binder for forming the household garbage granular fuel, the problem that the high-temperature softening cellulose is required for gluing in the traditional forming process is solved, the high-temperature forming temperature in the production process is reduced, after forming, the drop strength is greater than 150, the wear rate is lower than 3%, and all physical indexes reach the international standard. Meanwhile, the combustion heat value of the granular fuel can reach more than 8000kJ/kg at most, and the combustion heat value meets the requirement of incineration. The activated sludge is used as a raw material component, wherein the organic component has flammability, and the adhesive property of the activated sludge is extruded under high pressure, so that the adhesive effect is achieved in the particle forming process; and the inorganic substance plays a role of skeleton support in the combustion process, provides an important support structure for mass transfer of oxygen in the combustion process of the granular fuel and is beneficial to maintaining continuous combustion of the granular fuel.
Example 1
The dried sludge is not added, and the domestic garbage is directly prepared into the garbage derived granular fuel.
Weighing 10kg of domestic garbage as a raw material, extruding garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain the cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 2
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.074mm and household garbage particles with the particle size of 0.1mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Weighing 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 3
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.074mm and household garbage particles with the particle size of 0.5mm, wherein the dried sludge accounts for 30% of the mixture by mass.
Weighing 3kg of dried sludge and 7kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 4
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.074mm and household garbage particles with the particle size of 1.0mm, wherein the dried sludge accounts for 50% of the mixture by mass.
Weighing 5kg of dried sludge and 5kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 5
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.150mm and household garbage particles with the particle size of 1.0mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Weighing 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The elongation rate of the obtained particles in the length direction is 2.8-3.5%, the elongation rate of the obtained particles in the diameter direction is 0.30-0.43%, the wear rate is 2.1-3.2%, and the drop strength is 100.
Example 6
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.50mm and household garbage particles with the particle size of 1.0mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Weighing 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 7
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 1.00mm and household garbage particles with the particle size of 1.0mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Weighing 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, extruding and promoting contact and bonding of the sludge and garbage particles at room temperature by using a forming press under the pressure condition of 0.5-10MPa, setting the particle size of a die to be 6mm, and pressing to obtain cylindrical granular fuel with the diameter of 6 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 8
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.150mm and household garbage particles with the particle size of 2.5mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Taking 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, utilizing a forming press to extrude and promote the contact and bonding of the sludge and garbage particles under the pressure condition of 0.5-10MPa at room temperature, setting the particle size of a die to be 8mm, and pressing to obtain cylindrical granular fuel with the diameter of 8 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 9
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.150mm and household garbage particles with the particle size of 3.0mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Taking 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, utilizing a forming press to extrude and promote the contact and bonding of the sludge and garbage particles under the pressure condition of 0.5-10MPa at room temperature, setting the particle size of a die to be 12mm, and pressing to obtain the cylindrical granular fuel with the diameter of 12 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
Example 10
Preparing garbage-derived granular fuel from dried sludge powder with the particle size of 0.150mm and household garbage particles with the particle size of 4.0mm, wherein the dried sludge accounts for 10% of the mixture by mass.
Taking 1kg of dried sludge and 9kg of domestic garbage as raw materials, uniformly mixing, utilizing a forming press to extrude and promote the contact and bonding of the sludge and garbage particles under the pressure condition of 0.5-10MPa at room temperature, setting the particle size of a die to be 18mm, and pressing to obtain cylindrical granular fuel with the diameter of 18 mm. The produced pellet fuel was evaluated for the longitudinal elongation, the diametral elongation, the wear rate, the drop strength and the heat value of combustion, and the results are shown in table 1.
The results obtained by combining the above examples are shown in Table 1:
TABLE 1 evaluation of the properties of the particulate fuels according to the invention
Figure BDA0003084401690000111
The results in Table 1 show that the granular fuel prepared without adding the dried sludge (i.e., example 1) has a length-wise elongation of 4 to 8%, a diameter-wise elongation of 0.3 to 0.6%, a wear rate of 5 to 20%, and a drop strength of 50 to 100. With the increase of the consumption of the dried sludge in the embodiments 2 to 4, the elongation rate in the length direction, the elongation rate in the diameter direction and the wear rate of the prepared granular fuel are all reduced, and the drop strength is remarkably improved. The data of examples 5 to 10 show that the length direction extension rate, the diameter direction extension rate and the wear rate of the prepared granular fuel are all increased and the drop strength is basically unchanged along with the increase of the particle size of the dried sludge, the household garbage and the prepared granular fuel.
In addition, the data in Table 1 show that the combustion heat value of the granular fuel prepared by the scheme of the invention is more than 8000kJ/kg, and the combustion heat value meets the requirement of incineration.
By combining the results, after the granular fuel provided by the invention is formed, the drop strength is greater than 150, the wear rate is lower than 3%, and all physical indexes reach the international standard.
As described above, the present invention can be preferably implemented, and the above-mentioned embodiments only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various changes and modifications of the technical solution of the present invention made by those skilled in the art without departing from the design spirit of the present invention shall fall within the protection scope defined by the present invention.

Claims (6)

1. The resource utilization method for preparing the granular fuel by utilizing the sludge and the household garbage is characterized in that the main components of the granular fuel comprise the activated sludge and the household garbage; mixing the dried sludge and household garbage particles in proportion, and then pressing and forming to obtain the granular fuel; the water content of the activated sludge is 60-80%, and the activated sludge is dried and crushed to prepare dried sludge with the water content of 10-50%, wherein the particle size of the dried sludge is 0.074-1.00 mm.
2. The resource utilization method for preparing the granular fuel according to claim 1, wherein the domestic waste comprises,
paper: including newspapers, periodicals, books, wrapping paper, office paper, advertising paper, cartons and toilet paper;
plastics: comprises various plastic bags, plastic packages, disposable plastic lunch boxes, tableware cups and mineral water bottles;
rubber type: comprises toothbrush, toothpaste tube, tyre, rubber, hand warming bag, rubber shoes and leather products; weaving: comprises clothes, tablecloth, towels, schoolbag, walking shoes and cotton;
wood and bamboo: including wood and bamboo products, branches and leaves, and agricultural and forestry wastes.
3. The resource utilization method for preparing the granular fuel according to claim 2, wherein the domestic garbage is subjected to sorting, drying and crushing treatment to prepare domestic garbage granules with the grain size of 0.074-4.00 mm.
4. The resource utilization method for preparing the granular fuel according to claim 1, wherein the dried sludge accounts for 10-70% of the granular fuel by mass percent.
5. The resource utilization method for preparing the granular fuel as claimed in claim 1, wherein the pressure of the press molding is 0.5-10 MPa.
6. The resource utilization method for preparing the granular fuel according to claim 1, wherein the granular fuel is pressed into cylindrical granules with the diameter of 6-18 mm.
CN202110576017.1A 2021-05-26 2021-05-26 Resource utilization method for preparing granular fuel by using sludge and household garbage Pending CN113186012A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116673303A (en) * 2023-04-13 2023-09-01 中城院(北京)环境科技股份有限公司 High-heat-value component treatment process for decoration garbage

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US5125931A (en) * 1990-09-24 1992-06-30 Dynecology Incorporated Sewage sludge disposal process and apparatus
JP2006015174A (en) * 2004-06-30 2006-01-19 Maezawa Ind Inc Method and apparatus for sludge treatment
CN101987984A (en) * 2010-08-27 2011-03-23 天津百利阳光环保设备有限公司 Method for making compound solid waste derived fuel
CN109022079A (en) * 2018-08-31 2018-12-18 武汉天源环保股份有限公司 The method for preparing shaped fuel using town sewage plant sludge and house refuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125931A (en) * 1990-09-24 1992-06-30 Dynecology Incorporated Sewage sludge disposal process and apparatus
JP2006015174A (en) * 2004-06-30 2006-01-19 Maezawa Ind Inc Method and apparatus for sludge treatment
CN101987984A (en) * 2010-08-27 2011-03-23 天津百利阳光环保设备有限公司 Method for making compound solid waste derived fuel
CN109022079A (en) * 2018-08-31 2018-12-18 武汉天源环保股份有限公司 The method for preparing shaped fuel using town sewage plant sludge and house refuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116673303A (en) * 2023-04-13 2023-09-01 中城院(北京)环境科技股份有限公司 High-heat-value component treatment process for decoration garbage
CN116673303B (en) * 2023-04-13 2023-12-12 中城院(北京)环境科技股份有限公司 High-heat-value component treatment process for decoration garbage

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