Classifications

• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
  • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
  • C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
  • C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
  • C01F7/00—Compounds of aluminium
  • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
  • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
  • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
  • C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
  • C01F7/00—Compounds of aluminium
  • C01F7/68—Aluminium compounds containing sulfur
  • C01F7/74—Sulfates
  • C01F7/741—Preparation from elemental aluminium or elemental aluminium containing materials, e.g. foil or dross
• • 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
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/30—Hydrogen technology
  • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

• the water created by the neutralization of the washing of the liquid after separation of the impurities is used for rinsing the waste aluminum or for preparing the washing of the liquid, wherein after reaching a concentration of salts in the salt-containing water a neutralizing acid of the amount of 25 g 1 to 50 g/1, then 30% to 50% of the total volume of water is pumped out to the separation of the neutralization salts, and the remaining 50% to 70% of water is diluted with pure water to 100% of the original volume.
• the use of one and the same water is ecological while at the same time the concentration of salts is increased, which subsequently separate. It is more economical to separate a salt a single time in a higher concentration than it is to perform a continuous separation of salts.
• the salts of the neutralizing acid are separated in the liquid or solid phase. Other separation is carried out for each of the salts according to its technological difficulty.
• the hydrogen formed from the reaction of waste aluminum, and. sulfuric acid is used for heating chemicals, waste aluminum, and water. Hydrogen is a good source of heat during incineration and is also very clean because only water vapor is released during its combustion.
• FIG. I schematically illustrates the part of the water circuit with the modification of operating ;:and cold water
• Fig. 8 schematically illustrates the part of the water circuit with filtration of waste solutions
• Fig. 9 schematically illustrates the part of the water circuit with means for managing hot water and steam
• Fig. 10 schematically illustrates the part of the gas circuit with means for removing bad odors
• Fig. 11 schematically illustrates the ⁇ art of the gas circuit with means for separati g the hydrogen
• the water is pumped into a reservoir 8 of a concentrated solution of aluminum sulfate, and the water from the reservoir 34 is pumped by a pump 35 further into a reservoir 36 i ' or cold water.
• the cold water reservoir 36 has a volume of 10 m 3 and the water is retained at a temperature of 10° C.
• a hydrogen cooler 23 and an auger 86 for diatomite To the cold water reservoir 36 there are connected a hydrogen cooler 23 and an auger 86 for diatomite.
• an integrated cooling auger connected to the cooling compressor 32, and also connected to the reservoir 36 there is a pump 37 for the distribution of cold water to the odor trap 58.
• Fig. 6 shows a schematic illustration of the reactor 1 and the individual connected devices.
• the reactor 1 has a volume of 4.5 m 3 and is designed for an operating temperature of 95° C at a pressure of 1.5 bar. It is provided with means for mixing, a cleaning hatch, and includes double heating/cooling housing.
• Into the reactor 1 is conveyed clean shredded aluminum from the dispensing device 20, and 50% sulfuric acid is pumped into the reactor 1 by a pump 64.
• washing liquid in the neutralization tank 65 is neutralized with nitric acid.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Processing Of Solid Wastes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51870779

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (2)

Family Cites Families (11)

• 2013
  • 2013-09-30 CZ CZ2013-749A patent/CZ305018B6/cs not_active IP Right Cessation
• 2014
  • 2014-09-29 EP EP14795940.7A patent/EP3052434A1/en not_active Withdrawn
  • 2014-09-29 WO PCT/CZ2014/000105 patent/WO2015043557A1/en not_active Ceased

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