WO2000009256A1 - Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas - Google Patents

Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas Download PDF

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Publication number
WO2000009256A1
WO2000009256A1 PCT/NL1999/000431 NL9900431W WO0009256A1 WO 2000009256 A1 WO2000009256 A1 WO 2000009256A1 NL 9900431 W NL9900431 W NL 9900431W WO 0009256 A1 WO0009256 A1 WO 0009256A1
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WO
WIPO (PCT)
Prior art keywords
sorbent
gas stream
temperature
fluidized bed
cleaning
Prior art date
Application number
PCT/NL1999/000431
Other languages
French (fr)
Inventor
Nicolaas Voogt
Joseph Jan Peter Biermann
Original Assignee
Cdem Holland B.V.
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 Cdem Holland B.V. filed Critical Cdem Holland B.V.
Priority to AU48048/99A priority Critical patent/AU750944B2/en
Priority to DE69934703T priority patent/DE69934703T2/en
Priority to BR9913033-5A priority patent/BR9913033A/en
Priority to PL345884A priority patent/PL208066B1/en
Priority to MXPA01001581A priority patent/MXPA01001581A/en
Priority to CA002339985A priority patent/CA2339985C/en
Priority to JP2000564746A priority patent/JP4082866B2/en
Priority to EP99931601A priority patent/EP1119408B1/en
Priority to DK99931601T priority patent/DK1119408T3/en
Publication of WO2000009256A1 publication Critical patent/WO2000009256A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/64—Heavy metals or compounds thereof, e.g. mercury
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B01D53/70—Organic halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/11—Clays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/93—Toxic compounds not provided for in groups B01D2257/00 - B01D2257/708

Definitions

  • the invention relates to a method of manufacturing a sorbent suitable for the removal of metal from a hot gas stream, starting from a calcium- and kaolin-comprising base material such as residues released during the produc- 5 tion of paper and during the working up of waste paper for reuse.
  • a hot gas stream is understood to be a gas stream in which the metals or metal compounds to be removed are present as vapour.
  • 25 bed is operated at a temperature between 720 and 850°C, and the temperature in the freeboard is maintained at 850°C or below, whereby the base material converts to a substantially metakaolin-comprising substance, forming the sorbent .
  • 35 metals such as, for instance, lead, cadmium, and lead in the presence of cadmium, but is also effective in removing cadmium in the presence of lead.
  • the presence of more than one metal in a gas stream to be cleaned generally has a negative effect on the metal removal efficiency of a prior art sorbent directed at one of those metals . This is not the case with the sorbent according to the invention, with the result that the sorbent according to the invention is very widely applicable. It has moreover been shown that the sorbent according to the invention is substantially functional because of its binding via a reactive sorption mechanism rather than removal in accordance with the less desirable pore-diffusion mechanism. In contrast with known mixtures of kaolin or calcium hydroxide which act as sorbent, the sorbent according to the invention also appeared to be effective when chlorine-comprising components are present in the gas stream.
  • the results of the invention can be achieved particularly effectively if the temperature of the freeboard is maintained at 800°C or below. It is especially desirable that the temperature of the freeboard is kept lower than the temperature of the fluidized bed.
  • sand grains with a diameter in the region of 0.5- 2.0 mm are introduced into the fluidized bed.
  • the sand grains are able to promote heat transfer, allowing quick and correct temperature adjustment in the fluidized bed and in the freeboard.
  • these sand grains may play a supporting role in obtaining sorbent particles hav- ing a diameter of at least 0.5 mm due to the fact that the core of said particles are provided with a sand grain.
  • These relatively heavy particles are formed in the fluidized-bed process as by-product of the actual powdery sorbent, but they are suitable for use as sorbent in very simple gas cleaning applications.
  • the sorbent obtained by the method according to the invention is preferably formed such that at least 80% of the particles have a diameter of at least 2 ⁇ m. This is a large enough diameter to allow the powdery sorbent, after it has been used for the removal of metal from the gas stream, to be removed from the gas stream by means of standard dust collecting techniques, so that the costs can be kept low.
  • the sorbent according to the invention comprises at least approx. 20% by weight of metakaolin.
  • this component promotes the reactive sorption quality of the sorbent according to the invention.
  • Characteristic of the powdery sorbent according to the invention is that indistinguishably present in each metakaolin-comprising particle there are also micron scale calcium-comprising compounds. This was shown by measuring with an electron microscope equipped with X-ray analysis (EDX) by which means calcium, aluminium and silicon can be analyzed. This measurement has shown that in the metakaolin-comprising particle one cannot differentiate between the areas of calcium compounds and metakaolin. It is believed that with regard to activity, this aspect of the sorbent according to the invention distinguishes it from the known sorbents by the simultaneous trapping of different metals from a hot gas stream, either in the presence or not in the presence of anions such as chloride, such that for all these metals a good metal removal efficiency is provided.
  • EDX X-ray analysis
  • the calcium-comprising compounds in particular calcium carbonate and calcium hydroxide have the advantage that when the sorbent is used at high gas temperatures (for example approx. 1000°C) , the decomposition of said calcium compounds cause the sorbent particles to disinte- grate, with the result that the sorbent 's metal removal efficiency can be increased. It has been shown, moreover, that the sorbent according to the invention possesses cementing properties which are retained even after use while, in addition, the leaching properties of the sorbent after application are particularly favourable, so that reuse in the building trade would seem possible.
  • the remarkable properties of the sorbent according to the invention become further apparent when the sorbent is used for the cleaning of a gas stream in general .
  • the sorbent is then especially suitable for the, at least, partial removal of SOx from the gas stream and also for the, at least, partial removal of dioxins from the gas stream.
  • the sorbent is also effective in the removal of anions .
  • sorbents kaolin alone, calcium hydroxide alone, kaolin in combination with cal- cium hydroxide, and the sorbent according to the invention.
  • the various sorbents exhibited the following activity.
  • the sorbent according to the invention exhibits on all metals a so-called reactive sorption mechanism, which has a favourable effect on the leaching properties .
  • the sorption results shown in the above Table were repeated, wherein the gas also contained chlorine-comprising compounds. Even under those conditions the sorbent according to the invention appeared to be still active.
  • the sorbent according to the invention is applied for the removal of anions from a gas stream, such as anions from which SOx can be formed.
  • the gas stream comprised 4000 mg SOx (calculated as S0 2 ) per Nm 3 waste gas.
  • 90 g/Nm 3 sorbent according to the invention is added. After sorption of the SOx, the SOx concentration in the cleaned waste gasses was less than 10 mg per Nm 3 waste gas . Thus the removal efficiency is better than 99%.
  • the SOx-loaded sorbent is shown to be better resistant to leaching out of this compound than other media.
  • Table B the results are shown to compare sulphate leachability when using the sorbent according to the invention and when using portland cement (OPC) .
  • OPC portland cement
  • sulphur-containing fly ash is added to a SOx- loaded sorbent according to the invention, after which the leachability of sulphate is measured.
  • a similar amount of sulphur-containing fly ash is added to a commercially available portland cement sample.
  • water is added to both samples to obtain moist pellets which are allowed to harden for 7 or 28 days, respectively. In this manner the following sulphate leachability results were obtained.
  • the sorbent according to the invention is used also for trapping dioxins from a gas stream.
  • a gas stream is contacted with the sorbent according to the invention in a concentration of 90 g/Nm 3 .
  • the gas is contacted with the sorbent for less than 10 seconds, after which the sorbent is separated from the gas stream by means of a baghouse filter.
  • the dioxin concentration being introduced was 1.909 ng/Nm 3 . Of this, 1.863 ng/Nm 3 (that is to say more than 97%) were trapped by the sorbent, collected in the baghouse filter.
  • 0.037 ng/Nm 3 (approximately 2%) were present on sorbent particles found after the dust filter, and 0.009 ng/Nm 3 (that is to say less than 0.5%) were not trapped by the sorbent and were still present in the gas stream.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Processing Of Solid Wastes (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

The present invention relates to a method of manufacturing a sorbent suitable for removing a metal from a stream of hot gas out of a calcium and kaolin-containing raw material such as paper or other residues stemming from the production of paper and the recycling of waste paper. The raw material is thermally treated in a fluidized bed having a freeboard whereby the fluidized bed is operated at a temperature between 720 and 850 °C and the temperature of the freeboard is 850 °C or below so that the material is converted to a meta-kaolin containing substance forming the sorbent.

Description

METHOD FOR MANUFACTURING A SORBENT, A SORBENT OBTAINED WITH SUCH METHOD, AND A METHOD FOR CLEANING A STREAM OF HOT GAS
The invention relates to a method of manufacturing a sorbent suitable for the removal of metal from a hot gas stream, starting from a calcium- and kaolin-comprising base material such as residues released during the produc- 5 tion of paper and during the working up of waste paper for reuse. Within the scope of the invention, a hot gas stream is understood to be a gas stream in which the metals or metal compounds to be removed are present as vapour.
It is known from the prior art that paper or resi-
10 dues being released during the working up of waste paper for reuse, comprise mineral components, such as calcium and kaolin. It is also known to use kaolin or calcium hydroxide, respectively, for the removal of heavy metals from a gas stream. It has therefore indeed been suggested
15 to produce a sorbent starting from a calcium- and kaolin- comprising base material, in particular paper or residues being released during the working up of waste paper for reuse. The advantage would be, that one could economize on the kaolin which is only available in finite amounts, and
20 which is moreover rather costly.
To this end a method is suggested in accordance with the invention, which is characterized in that the base material is thermically treated in a fluidized bed above which there is a freeboard, wherein the fluidized
25 bed is operated at a temperature between 720 and 850°C, and the temperature in the freeboard is maintained at 850°C or below, whereby the base material converts to a substantially metakaolin-comprising substance, forming the sorbent .
30 Surprisingly it has been shown that in contrast with known mixtures of sorbents, which are individually substantially directed at the removal of some metals, such as kaolin and calcium hydroxide, the sorbent obtained in accordance with the invention not only efficiently removes
35 metals such as, for instance, lead, cadmium, and lead in the presence of cadmium, but is also effective in removing cadmium in the presence of lead. As already known, the presence of more than one metal in a gas stream to be cleaned, generally has a negative effect on the metal removal efficiency of a prior art sorbent directed at one of those metals . This is not the case with the sorbent according to the invention, with the result that the sorbent according to the invention is very widely applicable. It has moreover been shown that the sorbent according to the invention is substantially functional because of its binding via a reactive sorption mechanism rather than removal in accordance with the less desirable pore-diffusion mechanism. In contrast with known mixtures of kaolin or calcium hydroxide which act as sorbent, the sorbent according to the invention also appeared to be effective when chlorine-comprising components are present in the gas stream.
The results of the invention can be achieved particularly effectively if the temperature of the freeboard is maintained at 800°C or below. It is especially desirable that the temperature of the freeboard is kept lower than the temperature of the fluidized bed.
It is to advantage that together with the base material sand grains with a diameter in the region of 0.5- 2.0 mm are introduced into the fluidized bed. The sand grains are able to promote heat transfer, allowing quick and correct temperature adjustment in the fluidized bed and in the freeboard. In addition, these sand grains may play a supporting role in obtaining sorbent particles hav- ing a diameter of at least 0.5 mm due to the fact that the core of said particles are provided with a sand grain. These relatively heavy particles are formed in the fluidized-bed process as by-product of the actual powdery sorbent, but they are suitable for use as sorbent in very simple gas cleaning applications. Such heavy particles can be introduced quite easily into a gas stream and removed again after use, without the need for complex introduction and removal apparatuses . The sorbent obtained by the method according to the invention is preferably formed such that at least 80% of the particles have a diameter of at least 2 μm. This is a large enough diameter to allow the powdery sorbent, after it has been used for the removal of metal from the gas stream, to be removed from the gas stream by means of standard dust collecting techniques, so that the costs can be kept low.
Preferably the sorbent according to the invention comprises at least approx. 20% by weight of metakaolin. In the opinion of the inventors, this component promotes the reactive sorption quality of the sorbent according to the invention.
Characteristic of the powdery sorbent according to the invention is that indistinguishably present in each metakaolin-comprising particle there are also micron scale calcium-comprising compounds. This was shown by measuring with an electron microscope equipped with X-ray analysis (EDX) by which means calcium, aluminium and silicon can be analyzed. This measurement has shown that in the metakaolin-comprising particle one cannot differentiate between the areas of calcium compounds and metakaolin. It is believed that with regard to activity, this aspect of the sorbent according to the invention distinguishes it from the known sorbents by the simultaneous trapping of different metals from a hot gas stream, either in the presence or not in the presence of anions such as chloride, such that for all these metals a good metal removal efficiency is provided. The calcium-comprising compounds, in particular calcium carbonate and calcium hydroxide have the advantage that when the sorbent is used at high gas temperatures (for example approx. 1000°C) , the decomposition of said calcium compounds cause the sorbent particles to disinte- grate, with the result that the sorbent 's metal removal efficiency can be increased. It has been shown, moreover, that the sorbent according to the invention possesses cementing properties which are retained even after use while, in addition, the leaching properties of the sorbent after application are particularly favourable, so that reuse in the building trade would seem possible.
The remarkable properties of the sorbent according to the invention become further apparent when the sorbent is used for the cleaning of a gas stream in general . The sorbent is then especially suitable for the, at least, partial removal of SOx from the gas stream and also for the, at least, partial removal of dioxins from the gas stream. As mentioned above, the sorbent is also effective in the removal of anions .
The invention will now be further elucidated with reference to a few exemplary embodiments in which the sorbent according to the invention is used and a sorbent in a composition according to the prior art. EXAMPLE 1
Various heavy metals and combinations of heavy metals comprised in a gas stream, are subjected to a cleaning process using the following sorbents: kaolin alone, calcium hydroxide alone, kaolin in combination with cal- cium hydroxide, and the sorbent according to the invention. The various sorbents exhibited the following activity.
TABLE A
Figure imgf000006_0001
* = not measure
It was further shown that, in contrast with the sorbent of the prior art , the sorbent according to the invention exhibits on all metals a so-called reactive sorption mechanism, which has a favourable effect on the leaching properties . The sorption results shown in the above Table were repeated, wherein the gas also contained chlorine-comprising compounds. Even under those conditions the sorbent according to the invention appeared to be still active.
EXAMPLE 2
The sorbent according to the invention is applied for the removal of anions from a gas stream, such as anions from which SOx can be formed. The gas stream comprised 4000 mg SOx (calculated as S02) per Nm3 waste gas. To this gas stream 90 g/Nm3 sorbent according to the invention is added. After sorption of the SOx, the SOx concentration in the cleaned waste gasses was less than 10 mg per Nm3 waste gas . Thus the removal efficiency is better than 99%.
The SOx-loaded sorbent is shown to be better resistant to leaching out of this compound than other media. In Table B below, the results are shown to compare sulphate leachability when using the sorbent according to the invention and when using portland cement (OPC) . To this end sulphur-containing fly ash is added to a SOx- loaded sorbent according to the invention, after which the leachability of sulphate is measured. As comparison a similar amount of sulphur-containing fly ash is added to a commercially available portland cement sample. Then, in a rotating pan, water is added to both samples to obtain moist pellets which are allowed to harden for 7 or 28 days, respectively. In this manner the following sulphate leachability results were obtained.
TABLE B
Binding agent OPC 70 % sorbent, 30 % OPC
Setting time 7 days 28 days 7 days 28 days
Sulphate leachability 2240 1100 670 660 (mg/ g) EXAMPLE 3
The sorbent according to the invention is used also for trapping dioxins from a gas stream. To this end such a gas stream is contacted with the sorbent according to the invention in a concentration of 90 g/Nm3. The gas is contacted with the sorbent for less than 10 seconds, after which the sorbent is separated from the gas stream by means of a baghouse filter. The dioxin concentration being introduced was 1.909 ng/Nm3. Of this, 1.863 ng/Nm3 (that is to say more than 97%) were trapped by the sorbent, collected in the baghouse filter. 0.037 ng/Nm3 (approximately 2%) were present on sorbent particles found after the dust filter, and 0.009 ng/Nm3 (that is to say less than 0.5%) were not trapped by the sorbent and were still present in the gas stream.

Claims

1. A method of manufacturing a sorbent suitable for the removal of metal from a hot gas stream, starting from a calcium- and kaolin-comprising base material such as paper or residues released during the production of paper and during the working up of waste paper for reuse, characterized in that the base material is thermically treated in a fluidized bed above which there is a freeboard, wherein the fluidized bed is operated at a temperature between 720 and 850┬░C, and the temperature in the free- board is maintained at 850┬░C or below, whereby the base material converts to a substantially metakaolin-comprising substance, forming the sorbent.
2. A method according to claim 1, characterized in that the temperature of the freeboard is maintained at 800┬░C or below.
3. A method according to claim 1 or 2 , characterized in that the temperature of the freeboard is kept lower than the temperature of the fluidized bed.
4. A method according to any one of the claims 1-3, characterized in that together with the base material sand grains with a diameter in the region of 0.5-2.0 mm are introduced into the fluidized bed.
5. A sorbent obtained in correspondence to the method according to any one of the claims 1-4, character- ized in that at least 80% of the particles have a diameter of at least 2 ╬╝m.
6. A sorbent obtained in correspondence to the method according to any one of the claims 1-4, characterized in that the same comprises particles having a diam- eter of at least 0.5 mm.
7. A sorbent according to claim 6, characterized in that the core of said particles are provided with a sand grain.
8. A sorbent according to claims 5, 6 or 7, charac- terized in that said sorbent comprises at least 20% by weight of metakaolin.
9. A sorbent according to claims 5 and 8 , which also contains a calcium-comprising compound, characterized in that indistinguishably present in each metakaolin-comprising particle there are also micron scale calcium-com- prising compounds.
10. A method of cleaning a gas stream using a sorbent according to any one of the claims 5-9, characterized in that the sorbent is used for the, at least, partial removal of SOx from the gas stream.
11. A method of cleaning a gas stream using a sorbent according to any one of the claims 5-9, characterized in that the sorbent is used for the, at least, partial removal of dioxins from the gas stream.
12. A method of cleaning a gas stream using a sor- bent according to any one of the claims 5-9, characterized in that the sorbent is used for the, at least, partial removal of anions from the gas stream.
PCT/NL1999/000431 1998-08-14 1999-07-07 Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas WO2000009256A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AU48048/99A AU750944B2 (en) 1998-08-14 1999-07-07 Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas
DE69934703T DE69934703T2 (en) 1998-08-14 1999-07-07 METHOD FOR PRODUCING A SORPTION AGENT, SORPTION AGENT RECEIVED BY THIS METHOD, AND METHOD FOR CLEANING A HOT GAS STREAM
BR9913033-5A BR9913033A (en) 1998-08-14 1999-07-07 Method for the manufacture of an absorbent, an absorbent obtained with such a method and method for cleaning a stream of hot gas
PL345884A PL208066B1 (en) 1998-08-14 1999-07-07 Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas
MXPA01001581A MXPA01001581A (en) 1998-08-14 1999-07-07 Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas.
CA002339985A CA2339985C (en) 1998-08-14 1999-07-07 Method of manufacturing a sorbent, a sorbent obtained by such method, and method of cleaning a stream of hot gas
JP2000564746A JP4082866B2 (en) 1998-08-14 1999-07-07 Adsorbent production method, adsorbent obtained by this method, and high-temperature gas flow purification method
EP99931601A EP1119408B1 (en) 1998-08-14 1999-07-07 Method for manufacturing a sorbent, a sorbent obtained with such method, and a method for cleaning a stream of hot gas
DK99931601T DK1119408T3 (en) 1998-08-14 1999-07-07 A process for preparing a sorbent, a sorbent obtained by such a method, and a process for purifying a hot gas stream

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1009870 1998-08-14
NL1009870A NL1009870C2 (en) 1998-08-14 1998-08-14 Process for the production of a sorbent, the sorbent obtained by the process, and a process for cleaning a hot gas stream.

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CN (1) CN1193823C (en)
AT (1) ATE350153T1 (en)
AU (1) AU750944B2 (en)
BR (1) BR9913033A (en)
CA (1) CA2339985C (en)
DE (1) DE69934703T2 (en)
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ES (1) ES2280122T3 (en)
MX (1) MXPA01001581A (en)
NL (1) NL1009870C2 (en)
PL (1) PL208066B1 (en)
PT (1) PT1119408E (en)
WO (1) WO2000009256A1 (en)
ZA (1) ZA200100946B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004524955A (en) * 2001-01-26 2004-08-19 セーデーエーエム ホラント ベー．フェー． How to remove mercury from gas streams
US8196533B2 (en) 2008-10-27 2012-06-12 Kentucky-Tennessee Clay Co. Methods for operating a fluidized-bed reactor
US8574324B2 (en) * 2004-06-28 2013-11-05 Nox Ii, Ltd. Reducing sulfur gas emissions resulting from the burning of carbonaceous fuels
WO2018182406A1 (en) 2017-03-29 2018-10-04 Minplus B.V. A method of reducing corrosion of a heat exchanger of an incinerator comprising said heat exchanger
WO2020055257A1 (en) 2018-09-14 2020-03-19 Minplus B.V. A method of operating an incinerator comprising a device for capturing ash entrained by flue gas
EP3720583A4 (en) * 2017-12-04 2021-09-08 Gmt Ip, Llc Processing post-industrial and post-consumer waste streams and preparation of post-industrial and post-consumer products therefrom
WO2024058652A1 (en) * 2022-09-16 2024-03-21 Minplus B.V. A method of combusting n-containing material

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JP2005349349A (en) * 2004-06-14 2005-12-22 Kankyo Soken Kk Material for disposing of heavy metal
NL2013253B1 (en) * 2014-07-24 2016-09-09 Cdem B V Recovery of phosphorous.

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
JP2004524955A (en) * 2001-01-26 2004-08-19 セーデーエーエム ホラント ベー．フェー． How to remove mercury from gas streams
US6974564B2 (en) 2001-01-26 2005-12-13 Cdem Holland B.V. Method for the removal of mercury from a gas stream
US8574324B2 (en) * 2004-06-28 2013-11-05 Nox Ii, Ltd. Reducing sulfur gas emissions resulting from the burning of carbonaceous fuels
US8196533B2 (en) 2008-10-27 2012-06-12 Kentucky-Tennessee Clay Co. Methods for operating a fluidized-bed reactor
WO2018182406A1 (en) 2017-03-29 2018-10-04 Minplus B.V. A method of reducing corrosion of a heat exchanger of an incinerator comprising said heat exchanger
EP3720583A4 (en) * 2017-12-04 2021-09-08 Gmt Ip, Llc Processing post-industrial and post-consumer waste streams and preparation of post-industrial and post-consumer products therefrom
WO2020055257A1 (en) 2018-09-14 2020-03-19 Minplus B.V. A method of operating an incinerator comprising a device for capturing ash entrained by flue gas
WO2024058652A1 (en) * 2022-09-16 2024-03-21 Minplus B.V. A method of combusting n-containing material
NL2033051B1 (en) * 2022-09-16 2024-03-25 Minplus B V A method of combusting N-containing material

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