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Removal of SO2 from industrial flue gases
Patent
Reduction tertiary-alkyl
of
dimethyl ether ether manufacture
M.M. Nagji; R.E. Trubac UOP Inc. U.S. 4,876,394, Oct. 24, 1989; U.S. 4,814,517
formation
in
4055% zeolite carboxymethylated
methyl
Preventing components Appl.
June
9, 1988 Cont.-in-part
of
In the manufacture of the title ethers from MeOH and CM isoolefins, formation of Me20 is significantly lowered by adsorbing MezO and unreacted MeOH from the reactor effluent on beds of silica gel and zeolite 13X, desorbing MezO from the zeolite and MeOH from the silica, and recycling them to the reactor in feed concentrations of 2 5 ppm MezO and L 50 ppm unreacted MeOH, shifting the equilibrium of MeOH dehydration.
Simultaneous ral gas
removal
T.Y. Yan Mobil Oil Corp. U.S. 4,892,567,
of mercury
and water
from
F.J. Schepers; C.C. Verburg Unilever P/c.; Unilever N. V. Eur. Pat. Appl. 339,997, Nov.
Appt.
Aug.
of SO2 from
J. Izumi; T. Ogura; Mitsubishi Heavy Jpn Kokai Tokkyo 1987
15, 1988
industrial
flue gases
H. Tsutaya et al. Industries Ltd. Koho 89,119,328, May
Appl.
Nov.
2,
SOz is removed from flue gases from HzSOb-manufacturing plants or coal-fired power plants, etc., by passing the gas through 2 2 pressure-swing adsorption towers in which the SOz-containing feed gas is contacted with a high silica-containing porous adsorbent (e.g., ZSM-5 zeolite) to adsorb SOz. The spent adsorbent is then regenerated by desorption under reduced pressure; the desorbed SOz can be concentrated and recovered as a byproduct.
DETERGENTS detergents
for
odor-free
laundry
dried
out-
T. Nehashi; S. Yabe; F. Sai Kao Corp. Jpn. Kokai Tokkyo Koho 89,256,597, Oct.13, 1989; Appl. Apr. 6, 1988 Powdered detergents that do not leave surfactant residues that decompose to form odorous compounds when laundry is dried in sunlight comprise 4A zeolite 15-30, clathrate-forming host compounds 0.1-5, and monoterpene alcohols or their derivatives 0.060.5%, in addition to basic powdered detergent compounds such as alpha-olefinsulphonate salts, alpha-sulphofatty acid ester salts, and/ or alkylamine oxides.
Aqueous zeolite slurry compositions sion stability and flowability M. Murata; M. Sasaki Daiichi Kogyo Seiyaku Co. Ltd. Jpn. Kokai Tokkyo Koho 89,289,899, 16, 1988 The
title
compositions,
useful
with
Nov.
in detergent
good suspen-
21, 1989; manufacture,
U.K.
Appl.
Apr.
of
29, 1988
resin
APPLICATIONS
compositions
The title compositions, furniture etc. comprise Ag complex of zeolite
Appl.
May contain
et al. New Ceramic K.K. Nov. 17, 1989; Appl.
useful for injection plastics, bactericidal A, and metal soaps.
antibacterial
fabrics
The title fabrics are prepared by coating fabrics comprising antibacterial zeolite powders, e.g., Ag A, polymers, a higher-boiling solvent (A, b.p. lower-boiling solvent having b.p. that differs from
Adsorbents
May.
molding to bathroom aluminosilicates, e.g.,
T. Yamamoto; Y. Kurihara; K. Sugiura et al. Shinagawa Fuel Co. Ltd.; Shinanen New Ceramic Jpn. Kokai Tokkyo Koho 89,260,068, Oct. 17, 1989; 1988
for low-concentration
T. Watanabe; M. Ichiki; Hitachi Zosen Corp. Jpn. Kokai Tokkyo Koho 1988
Powdered doors
2, 1989;
T. Yamamoto; S. Uchida; Y. Kurihara Shinagawa Fuel Co. Ltd.; Shinanen Jpn. Kokai Tokkyo Koho 89,287,172, 13, 1988
Wash-fast 11,1989;
(solids-based)
In substantially nonaqueous liquid cleaning compositions containing dispersed particles of aluminosilicates builder, components sensitive to aluminosilicate-catalysed decomposition (especially a bleach system comprising an inorganic per salt and a bleach precursor) are protected by deactivating the surfaces of the aluminosilicate particles with an acid.
Batericidal 9, 1990;
0.055%
aluminosilicate-catalysed decomposition of liquid cleaning compositions
MISCELLANEOUS Jan.
and
natu-
The title process comprises contacting the gas with an effective amount of zeolite A containing 0.001-15 wt.% elemental Ag or Au, and regenerating at elevated temperatures for the simultaneous removal of water and Hg. This method prevents corrosion of Al heat exchangers by wet natural gas.
Removal
(diam. 2-10 microns) starch salt.
report
K.K. Appl.
Apr.
7,
with composfiions complex of zeolite 2 100” C), and a that ofA by 2 5°C.
nitrogen
oxides
S. Onizuka. 89,299,642,
Dec. 4, 1989;
Appl.
May
30,
Synthetic zeolites containing 2 1 Cu salts selected from Cu chloride, Cu chloride complex salts, and Cu chloride ammine complexes are useful for adsorption of low-concentration NO,. The adsorbents are useful for the treatment of exhaust gases in tunnels.
Deodorants
for indoor
air treatment
T. Imai; S. Yokoyama Mitsubishi Heavy Industries Ltd. Jpn. Kokai Tokkyo Koho 89,151,938, June 14,1989; Appl. Dec. 8, 1987 The deodorants for removing SOz, amines and mercaptans from odorous air in toilets, hospitals, pet houses, etc., are prepared by impregnating a zeolite A support with CU and/or Mn oxides.
Leather zeolites
preservatives
containing
metal
ion bound
in
S. Ando; A. Dono; K. Matsumoto et al. Kanebo Ltd.; Sanyo Colour Works Ltd. Jpn. Kokai Tokkyo Koho 89,172,309, July 7, 1989; Appl. Dec. 28, 1987 A preservative for leather contains A-, X-, or Y-zeolite (or modenite granules (sp. surface area 2 150 m’/g, SiOz/AizOz mol ratio 5 141, impregnated with microbicidal metal ions, such as Ag+, Ca”, and Zn+*.
ZEOLITES,
1991, Vol 11, February
197
Reduction tertiary-alkyl
of
dimethyl ether ether manufacture
M.M. Nagji; R.E. Trubac UOP Inc. U.S. 4,876,394, Oct. 24, 1989; U.S. 4,814,517
formation
in
4055% zeolite carboxymethylated
methyl
Preventing components Appl.
June
9, 1988 Cont.-in-part
of
In the manufacture of the title ethers from MeOH and CM isoolefins, formation of Me20 is significantly lowered by adsorbing MezO and unreacted MeOH from the reactor effluent on beds of silica gel and zeolite 13X, desorbing MezO from the zeolite and MeOH from the silica, and recycling them to the reactor in feed concentrations of 2 5 ppm MezO and L 50 ppm unreacted MeOH, shifting the equilibrium of MeOH dehydration.
Simultaneous ral gas
removal
T.Y. Yan Mobil Oil Corp. U.S. 4,892,567,
of mercury
and water
from
F.J. Schepers; C.C. Verburg Unilever P/c.; Unilever N. V. Eur. Pat. Appl. 339,997, Nov.
Appt.
Aug.
of SO2 from
J. Izumi; T. Ogura; Mitsubishi Heavy Jpn Kokai Tokkyo 1987
15, 1988
industrial
flue gases
H. Tsutaya et al. Industries Ltd. Koho 89,119,328, May
Appl.
Nov.
2,
SOz is removed from flue gases from HzSOb-manufacturing plants or coal-fired power plants, etc., by passing the gas through 2 2 pressure-swing adsorption towers in which the SOz-containing feed gas is contacted with a high silica-containing porous adsorbent (e.g., ZSM-5 zeolite) to adsorb SOz. The spent adsorbent is then regenerated by desorption under reduced pressure; the desorbed SOz can be concentrated and recovered as a byproduct.
DETERGENTS detergents
for
odor-free
laundry
dried
out-
T. Nehashi; S. Yabe; F. Sai Kao Corp. Jpn. Kokai Tokkyo Koho 89,256,597, Oct.13, 1989; Appl. Apr. 6, 1988 Powdered detergents that do not leave surfactant residues that decompose to form odorous compounds when laundry is dried in sunlight comprise 4A zeolite 15-30, clathrate-forming host compounds 0.1-5, and monoterpene alcohols or their derivatives 0.060.5%, in addition to basic powdered detergent compounds such as alpha-olefinsulphonate salts, alpha-sulphofatty acid ester salts, and/ or alkylamine oxides.
Aqueous zeolite slurry compositions sion stability and flowability M. Murata; M. Sasaki Daiichi Kogyo Seiyaku Co. Ltd. Jpn. Kokai Tokkyo Koho 89,289,899, 16, 1988 The
title
compositions,
useful
with
Nov.
in detergent
good suspen-
21, 1989; manufacture,
U.K.
Appl.
Apr.
of
29, 1988
resin
APPLICATIONS
compositions
The title compositions, furniture etc. comprise Ag complex of zeolite
Appl.
May contain
et al. New Ceramic K.K. Nov. 17, 1989; Appl.
useful for injection plastics, bactericidal A, and metal soaps.
antibacterial
fabrics
The title fabrics are prepared by coating fabrics comprising antibacterial zeolite powders, e.g., Ag A, polymers, a higher-boiling solvent (A, b.p. lower-boiling solvent having b.p. that differs from
Adsorbents
May.
molding to bathroom aluminosilicates, e.g.,
T. Yamamoto; Y. Kurihara; K. Sugiura et al. Shinagawa Fuel Co. Ltd.; Shinanen New Ceramic Jpn. Kokai Tokkyo Koho 89,260,068, Oct. 17, 1989; 1988
for low-concentration
T. Watanabe; M. Ichiki; Hitachi Zosen Corp. Jpn. Kokai Tokkyo Koho 1988
Powdered doors
2, 1989;
T. Yamamoto; S. Uchida; Y. Kurihara Shinagawa Fuel Co. Ltd.; Shinanen Jpn. Kokai Tokkyo Koho 89,287,172, 13, 1988
Wash-fast 11,1989;
(solids-based)
In substantially nonaqueous liquid cleaning compositions containing dispersed particles of aluminosilicates builder, components sensitive to aluminosilicate-catalysed decomposition (especially a bleach system comprising an inorganic per salt and a bleach precursor) are protected by deactivating the surfaces of the aluminosilicate particles with an acid.
Batericidal 9, 1990;
0.055%
aluminosilicate-catalysed decomposition of liquid cleaning compositions
MISCELLANEOUS Jan.
and
natu-
The title process comprises contacting the gas with an effective amount of zeolite A containing 0.001-15 wt.% elemental Ag or Au, and regenerating at elevated temperatures for the simultaneous removal of water and Hg. This method prevents corrosion of Al heat exchangers by wet natural gas.
Removal
(diam. 2-10 microns) starch salt.
report
K.K. Appl.
Apr.
7,
with composfiions complex of zeolite 2 100” C), and a that ofA by 2 5°C.
nitrogen
oxides
S. Onizuka. 89,299,642,
Dec. 4, 1989;
Appl.
May
30,
Synthetic zeolites containing 2 1 Cu salts selected from Cu chloride, Cu chloride complex salts, and Cu chloride ammine complexes are useful for adsorption of low-concentration NO,. The adsorbents are useful for the treatment of exhaust gases in tunnels.
Deodorants
for indoor
air treatment
T. Imai; S. Yokoyama Mitsubishi Heavy Industries Ltd. Jpn. Kokai Tokkyo Koho 89,151,938, June 14,1989; Appl. Dec. 8, 1987 The deodorants for removing SOz, amines and mercaptans from odorous air in toilets, hospitals, pet houses, etc., are prepared by impregnating a zeolite A support with CU and/or Mn oxides.
Leather zeolites
preservatives
containing
metal
ion bound
in
S. Ando; A. Dono; K. Matsumoto et al. Kanebo Ltd.; Sanyo Colour Works Ltd. Jpn. Kokai Tokkyo Koho 89,172,309, July 7, 1989; Appl. Dec. 28, 1987 A preservative for leather contains A-, X-, or Y-zeolite (or modenite granules (sp. surface area 2 150 m’/g, SiOz/AizOz mol ratio 5 141, impregnated with microbicidal metal ions, such as Ag+, Ca”, and Zn+*.
ZEOLITES,
1991, Vol 11, February
197