Processing distn. residues from photographic processing solns
Process for processing distn. residues from photographic processing chemical solns. contg. sulphur-, NH4-, K-, Na- and Br cpds. together with a total organic carbon cpd. content of 30-40 wt.%, comprises suspending the distn. residues in water at a solids content of 400-700 g/l; subjecting the suspen...
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| creator | BINGS, HUBERT, 44532 LUENEN, DE |
| description | Process for processing distn. residues from photographic processing chemical solns. contg. sulphur-, NH4-, K-, Na- and Br cpds. together with a total organic carbon cpd. content of 30-40 wt.%, comprises suspending the distn. residues in water at a solids content of 400-700 g/l; subjecting the suspension to hydrothermal treatment at 120-200 deg C for 5-30 mins. under a partial O2 press. of 20-80 bar, and filtering the resulting crude sulphur out of the suspension; adding lime in a stoichiometric amt. w.r.t. and the SO4 content so that the pH of the suspension is changed from pH 2-4 to a pH greater than 12, and filtering off the pptd. crude gypsum, subjecting the filtrate from gypsum recovery to rectification (stripping) by introducing water or steam at 80-110 deg C for 10-90 mins.; subjecting the filtrate to evapn. with simultaneous conversion of the organic substances to a sec. fuel which is recovered; and recirculating the crude residual condensate to the suspension-forming stage . |
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subjecting the suspension to hydrothermal treatment at 120-200 deg C for 5-30 mins. under a partial O2 press. of 20-80 bar, and filtering the resulting crude sulphur out of the suspension; adding lime in a stoichiometric amt. w.r.t. and the SO4 content so that the pH of the suspension is changed from pH 2-4 to a pH greater than 12, and filtering off the pptd. crude gypsum, subjecting the filtrate from gypsum recovery to rectification (stripping) by introducing water or steam at 80-110 deg C for 10-90 mins.; subjecting the filtrate to evapn. with simultaneous conversion of the organic substances to a sec. fuel which is recovered; and recirculating the crude residual condensate to the suspension-forming stage .</description><edition>6</edition><language>eng ; ger</language><subject>AUXILIARY PROCESSES IN PHOTOGRAPHY ; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS ; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS ; CHEMISTRY ; CINEMATOGRAPHY ; ELECTROGRAPHY ; FIRE-FIGHTING ; HOLOGRAPHY ; HUMAN NECESSITIES ; LIFE-SAVING ; METALLURGY ; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES ; PHOTOGRAPHY ; PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES ; PHYSICS ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>1996</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960328&DB=EPODOC&CC=DE&NR=4433412A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960328&DB=EPODOC&CC=DE&NR=4433412A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BINGS, HUBERT, 44532 LUENEN, DE</creatorcontrib><title>Processing distn. residues from photographic processing solns</title><description>Process for processing distn. residues from photographic processing chemical solns. contg. sulphur-, NH4-, K-, Na- and Br cpds. together with a total organic carbon cpd. content of 30-40 wt.%, comprises suspending the distn. residues in water at a solids content of 400-700 g/l; subjecting the suspension to hydrothermal treatment at 120-200 deg C for 5-30 mins. under a partial O2 press. of 20-80 bar, and filtering the resulting crude sulphur out of the suspension; adding lime in a stoichiometric amt. w.r.t. and the SO4 content so that the pH of the suspension is changed from pH 2-4 to a pH greater than 12, and filtering off the pptd. crude gypsum, subjecting the filtrate from gypsum recovery to rectification (stripping) by introducing water or steam at 80-110 deg C for 10-90 mins.; subjecting the filtrate to evapn. with simultaneous conversion of the organic substances to a sec. fuel which is recovered; and recirculating the crude residual condensate to the suspension-forming stage .</description><subject>AUXILIARY PROCESSES IN PHOTOGRAPHY</subject><subject>CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS</subject><subject>CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS</subject><subject>CHEMISTRY</subject><subject>CINEMATOGRAPHY</subject><subject>ELECTROGRAPHY</subject><subject>FIRE-FIGHTING</subject><subject>HOLOGRAPHY</subject><subject>HUMAN NECESSITIES</subject><subject>LIFE-SAVING</subject><subject>METALLURGY</subject><subject>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</subject><subject>PHOTOGRAPHY</subject><subject>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</subject><subject>PHYSICS</subject><subject>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1996</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLANKMpPTi0uzsxLV0jJLC7J01MoSi3OTClNLVZIK8rPVSjIyC_JTy9KLMjITFYoQCguzs_JK-ZhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfEuriYmxsYmhkaOhsZEKAEADDgwVw</recordid><startdate>19960328</startdate><enddate>19960328</enddate><creator>BINGS, HUBERT, 44532 LUENEN, DE</creator><scope>EVB</scope></search><sort><creationdate>19960328</creationdate><title>Processing distn. residues from photographic processing solns</title><author>BINGS, HUBERT, 44532 LUENEN, DE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DE4433412A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>1996</creationdate><topic>AUXILIARY PROCESSES IN PHOTOGRAPHY</topic><topic>CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS</topic><topic>CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS</topic><topic>CHEMISTRY</topic><topic>CINEMATOGRAPHY</topic><topic>ELECTROGRAPHY</topic><topic>FIRE-FIGHTING</topic><topic>HOLOGRAPHY</topic><topic>HUMAN NECESSITIES</topic><topic>LIFE-SAVING</topic><topic>METALLURGY</topic><topic>PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES</topic><topic>PHOTOGRAPHY</topic><topic>PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES</topic><topic>PHYSICS</topic><topic>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</topic><toplevel>online_resources</toplevel><creatorcontrib>BINGS, HUBERT, 44532 LUENEN, DE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BINGS, HUBERT, 44532 LUENEN, DE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Processing distn. residues from photographic processing solns</title><date>1996-03-28</date><risdate>1996</risdate><abstract>Process for processing distn. residues from photographic processing chemical solns. contg. sulphur-, NH4-, K-, Na- and Br cpds. together with a total organic carbon cpd. content of 30-40 wt.%, comprises suspending the distn. residues in water at a solids content of 400-700 g/l; subjecting the suspension to hydrothermal treatment at 120-200 deg C for 5-30 mins. under a partial O2 press. of 20-80 bar, and filtering the resulting crude sulphur out of the suspension; adding lime in a stoichiometric amt. w.r.t. and the SO4 content so that the pH of the suspension is changed from pH 2-4 to a pH greater than 12, and filtering off the pptd. crude gypsum, subjecting the filtrate from gypsum recovery to rectification (stripping) by introducing water or steam at 80-110 deg C for 10-90 mins.; subjecting the filtrate to evapn. with simultaneous conversion of the organic substances to a sec. fuel which is recovered; and recirculating the crude residual condensate to the suspension-forming stage .</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; ger |
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| subjects | AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY FIRE-FIGHTING HOLOGRAPHY HUMAN NECESSITIES LIFE-SAVING METALLURGY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Processing distn. residues from photographic processing solns |
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