WO2000005328A1 - Method of producing biofuel - Google Patents

Method of producing biofuel Download PDF

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Publication number
WO2000005328A1
WO2000005328A1 PCT/SE1999/001258 SE9901258W WO0005328A1 WO 2000005328 A1 WO2000005328 A1 WO 2000005328A1 SE 9901258 W SE9901258 W SE 9901258W WO 0005328 A1 WO0005328 A1 WO 0005328A1
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
fibre
pellets
bio
briquettes
Prior art date
Application number
PCT/SE1999/001258
Other languages
French (fr)
Inventor
Tomas KARLSTRÖM
Original Assignee
Arnesson Energi Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arnesson Energi Ab filed Critical Arnesson Energi Ab
Priority to AU53893/99A priority Critical patent/AU5389399A/en
Publication of WO2000005328A1 publication Critical patent/WO2000005328A1/en

Links

Classifications

    • 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
    • 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
    • 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

Definitions

  • This invention relates to a method of producing a processed biofuel, for instance in the form of pellets/briquettes with a high energy content, based upon a raw material in the form of hydrous fibre sludge, sludge from purifying plants and/or fibre-based material like for instance wood raw material.
  • the formed, pressed products are homogenized, i.e. are given a supplementary, thermal treatment at a temperature of 50-200°C, a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities being like those of carbon.
  • this patent application comprises a step 4, which means that the products after pressing and forming go through a hardening process, whereby the products are given very good qualities, which shall be described more closely below.
  • a principal sketch over a flowchart containing a plurality of stations for carrying out the new method is shown in the enclosed figure.
  • a mixing chamber with the denotation 1. which chamber is supplied with a fibre- and/or sludge material respectively bio-oil. which is indicated by the denotations 2, 3.
  • the mixture formed in the mixing chamber 1 is subjected to heating for 5-30 min at a temperature of 90-170 c C, whereby water is driven away from the fibre- and/or sludge material. This is indicated in the figure by means of the stations 4 and 5. From the station 5 the de-watered mixture is taken to a pressing device 6. where de-oiling is made, bio-oil, pressed away, being returned to the process at the same time as the de-oiled material is formed to pellets/briquettes.
  • the formed, pressed products i.e. the pellets briquettes
  • these ones are subjected to a homogenization process, i.e. are given a supplementary, thermal treatment at a temperature of 50-200°C. a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities like those of carbon.
  • the products are taken from the station 7 to a terminal station 8, which is in the form of a fuel storage.
  • 1 ton sludge containing 800 kg water and 200 kg dry substance are fed continuously during 1 h into a mixing chamber, where it is mixed with 200 kg new bio- oil and 1300 kg re-circulated bio-oil.
  • flush-tank for driving away water.
  • the hot sludge- and oilmixture are spurted onto the innerwalls of the tank. 720 kg water being driven away per hour.
  • the remaining sludge- and oilmixture is thereafter pumped to a pressing and formation device, where 1310 kg biooil is separated from the mixture and is re-circulated to the mixing chamber. Thereafter, the reduced sludge- and oilmixture (470 kg) is formed in this case to pellets.
  • the pellets have to go through the previously mentioned hardening process.
  • the pellets are taken to an oven, where the hardening goes on for 3 hours at a temperature of 140°C, the mentioned crystallization being made.
  • the final pellets (465 kg/h) are taken out of the oven and are allowed to be cooled down in a fuel storage.

Abstract

This invention relates to a method of producing a processed biofuel, for instance in the form of pellets/briquettes with a high energy content, based upon a raw material in the form of hydrous fibre sludge, sludge from purifying plants and/or fibre-based material like for instance wood raw material. According to the invention the method is characterized by the combination of the following steps: the fibre- and/or sludge material is mixed with bio-oil and is heated in such a way that the water in the material is driven away so that this one is dried; the mentioned mixture is de-oiled in a pressing device, whereafter the de-oiled material is formed to pellets/briquettes; the formed, pressed products are homogenized, i.e. are given a supplementary, thermal treatment at a temperature of 50-200 °C, a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities being like those of carbon.

Description

Method of producing biofuel
This invention relates to a method of producing a processed biofuel, for instance in the form of pellets/briquettes with a high energy content, based upon a raw material in the form of hydrous fibre sludge, sludge from purifying plants and/or fibre-based material like for instance wood raw material.
During a long time there have been requirements in the market for a biofuel with a high energy content which could be based on rest products, usual in the community, like fibre sludge and sludge from purifying plants and/or other raw materials like fibre- based materials. This invention intends to provide for these requirements, which has been made possible by a new method for producing biofuel. The new method is characterized by the combination of the following steps:
1) The fibre- and/or sludge material is mixed with bio-oil in a mixing chamber;
2) The mentioned mixture is heated up for 5-30 min at a temperature of 90 - 170°C, whereby water is driven away and the material is dried;
3) The mentioned mixture is de-oiled in a pressing device, whereafter removed bio-oil is returned to the process and the de-oiled material is formed to pellets/briquettes;
4) The formed, pressed products are homogenized, i.e. are given a supplementary, thermal treatment at a temperature of 50-200°C, a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities being like those of carbon.
The steps 1-3 have certain similarities with what have been previously known by the Japanese patents Nos. 61-296 and 63-120792.
The great and important difference is that this patent application comprises a step 4, which means that the products after pressing and forming go through a hardening process, whereby the products are given very good qualities, which shall be described more closely below.
A principal sketch over a flowchart containing a plurality of stations for carrying out the new method is shown in the enclosed figure. In the mentioned figure is shown a mixing chamber with the denotation 1. which chamber is supplied with a fibre- and/or sludge material respectively bio-oil. which is indicated by the denotations 2, 3.
The mixture formed in the mixing chamber 1 is subjected to heating for 5-30 min at a temperature of 90-170cC, whereby water is driven away from the fibre- and/or sludge material. This is indicated in the figure by means of the stations 4 and 5. From the station 5 the de-watered mixture is taken to a pressing device 6. where de-oiling is made, bio-oil, pressed away, being returned to the process at the same time as the de-oiled material is formed to pellets/briquettes.
From the station 6 the formed, pressed products, i.e. the pellets briquettes, are taken to the station 7, where these ones are subjected to a homogenization process, i.e. are given a supplementary, thermal treatment at a temperature of 50-200°C. a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities like those of carbon.
Due to that fact a final product with very good qualities is obtained:
1) It contains 100% biofuel. In this respect the new product complies with the Kyoto-agreement, which was driven through by the United Nations, and according to which a world- wide reduction of the greenhouse gases are strived for.
2) It has a high energy content (exceeding 5,5 MWh/ton.
3) It can be stored outdoors due to the fact that it partly is hydrophobic. partly does not emit any emissions to the environment; 4) It is simple to divide into pieces, which is of value for dust firing.
The products are taken from the station 7 to a terminal station 8, which is in the form of a fuel storage.
In order to illustrate the invention further, an example of a method for carrying out the invention shall hereinafter be described, there being assumed that a plant being at hand which is dimensioned for treating 1 ton sludge per hour continuously.
1 ton sludge containing 800 kg water and 200 kg dry substance are fed continuously during 1 h into a mixing chamber, where it is mixed with 200 kg new bio- oil and 1300 kg re-circulated bio-oil. The mixture (2500 kg), formed in that way. is heated up to 90°C (energy consumption = 100 kWh). whereafter it is pumped to a station for further heating. In this connection the pressure is raised to 4 bar and the temperature to 140°C (energy consumption = 410 kWh). In this case there is a so-called flush-tank for driving away water. The hot sludge- and oilmixture are spurted onto the innerwalls of the tank. 720 kg water being driven away per hour. The remaining sludge- and oilmixture is thereafter pumped to a pressing and formation device, where 1310 kg biooil is separated from the mixture and is re-circulated to the mixing chamber. Thereafter, the reduced sludge- and oilmixture (470 kg) is formed in this case to pellets. In order that the specific, final product shall be obtained, that is the result of this invention, the pellets have to go through the previously mentioned hardening process. Thus, the pellets are taken to an oven, where the hardening goes on for 3 hours at a temperature of 140°C, the mentioned crystallization being made. The final pellets (465 kg/h) are taken out of the oven and are allowed to be cooled down in a fuel storage.
In the following method claim, all steps 1-4 have been inserted into the characterizing part of the claim. The reason why is that we will make clear that we apply for patent protection of the combination of steps, which at least to certain parts are previously known, and comprises the new, special step 4 which is that step that makes the production of the final product, described in the text, possible.
The invention, of course, can be modified within the scope of the following claims.

Claims

Claims
1. A method of producing a processed biofuel, for instance in the form of pellets/briquettes with a high energy content, based upon a raw material in the form of hydrous fibre sludge, sludge from purifying plants and/or fibre-based material like for instance wood raw material; c h a r a c t e r i z e d by the combination of the following steps:
- The fibre- and/or sludge material is mixed with bio-oil in a mixing chamber;
- The mentioned mixture is heated up for 5-30 min at a temperature of 90 - 170┬░C, whereby water is driven away and the material is dried; - The mentioned mixture is de-oiled in a pressing device, whereafter removed bio-oil is returned to the process and the de-oiled material is formed to pellets/briquettes;
- The formed, pressed products are homogenized, i.e. are given a supplementary, thermal treatment at a temperature of 50-200┬░C, a chemical reaction being started up, by which the products are crystallized, i.e. are hardened to a material with qualities being like those of carbon.
2. A method according to claim 1, c h a r a c t e r i z e d in that the mixture of bio-oil and the fibre- and/or sludge material is preheated to a temperature of 90┬░C in the mixing chamber.
PCT/SE1999/001258 1998-07-10 1999-07-12 Method of producing biofuel WO2000005328A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53893/99A AU5389399A (en) 1998-07-10 1999-07-12 Method of producing biofuel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802511-7 1998-07-10
SE9802511A SE9802511D0 (en) 1998-07-10 1998-07-10 METHOD OF pRODUCTION

Publications (1)

Publication Number Publication Date
WO2000005328A1 true WO2000005328A1 (en) 2000-02-03

Family

ID=20412063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/001258 WO2000005328A1 (en) 1998-07-10 1999-07-12 Method of producing biofuel

Country Status (3)

Country Link
AU (1) AU5389399A (en)
SE (1) SE9802511D0 (en)
WO (1) WO2000005328A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2201862A1 (en) * 1997-05-05 2004-03-16 Universidad De Alicante Combustible almond shell briquettes
WO2013108223A1 (en) 2012-01-19 2013-07-25 Uab "Svela Real Estate" The production method of ecological biofuel briquettes
CN114854467A (en) * 2022-05-06 2022-08-05 河南城建学院 Device for preparing solid fuel by blending sludge and wood fiber wastes and performing hydrothermal carbonization

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61296A (en) * 1984-06-13 1986-01-06 Ebara Infilco Co Ltd Treatment of organic sludge
JPS63120792A (en) * 1986-11-10 1988-05-25 Shuzo Nakazono Production of fuel from sludge and waste oil
JPS63165490A (en) * 1986-09-13 1988-07-08 Shuzo Nakazono Production of fuel from sludge
US4960438A (en) * 1989-05-30 1990-10-02 The Barkesh Company Briquette an related process
US5244472A (en) * 1987-05-13 1993-09-14 Simmons John J Preparation of chemically dried cellulosic fuel
US5288413A (en) * 1991-10-24 1994-02-22 Shell Oil Company Treatment of a waste sludge to produce a non-sticking fuel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61296A (en) * 1984-06-13 1986-01-06 Ebara Infilco Co Ltd Treatment of organic sludge
JPS63165490A (en) * 1986-09-13 1988-07-08 Shuzo Nakazono Production of fuel from sludge
JPS63120792A (en) * 1986-11-10 1988-05-25 Shuzo Nakazono Production of fuel from sludge and waste oil
US5244472A (en) * 1987-05-13 1993-09-14 Simmons John J Preparation of chemically dried cellulosic fuel
US4960438A (en) * 1989-05-30 1990-10-02 The Barkesh Company Briquette an related process
US5288413A (en) * 1991-10-24 1994-02-22 Shell Oil Company Treatment of a waste sludge to produce a non-sticking fuel

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8607, Derwent World Patents Index; AN 1986-045889 *
DATABASE WPI Week 8827, Derwent World Patents Index; AN 1988-185290 *
DATABASE WPI Week 8833, Derwent World Patents Index; AN 1988-231732 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2201862A1 (en) * 1997-05-05 2004-03-16 Universidad De Alicante Combustible almond shell briquettes
WO2013108223A1 (en) 2012-01-19 2013-07-25 Uab "Svela Real Estate" The production method of ecological biofuel briquettes
LT5973B (en) 2012-01-19 2013-11-25 Visvaldas Zeleniakas Organic briquette production method
CN114854467A (en) * 2022-05-06 2022-08-05 河南城建学院 Device for preparing solid fuel by blending sludge and wood fiber wastes and performing hydrothermal carbonization
CN114854467B (en) * 2022-05-06 2023-02-24 河南城建学院 Device for preparing solid fuel by blending sludge and wood fiber wastes and performing hydrothermal carbonization

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Publication number Publication date
AU5389399A (en) 2000-02-14
SE9802511D0 (en) 1998-07-10

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