Absorption of hydrogen sulphide from waste contg. carbon di:sulphide from viscose prodn. - in sodium hydroxide soln. contg. silicone oil or paraffin or alcohol
Spray columns are used as absorber and NaOH soln. as absorbent, with recovery of Na2S and/or NaHs soln., 0.0001-0.004 wt.%, w.r.t. the NaOH soln., of silicone oils and/or paraffins and/or alcohols are added to the absorption system. ADVANTAGE - Absorption effect is high, and there is negligible resi...
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| creator | MOOZ, BIRGIT BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE SCHMIDT, WOLFGANG SPERHACKE, ROLAND., O-6800 SAALFELD, DE HARTWICH, WALTER, O-6820 RUDOLSTADT, DE |
| description | Spray columns are used as absorber and NaOH soln. as absorbent, with recovery of Na2S and/or NaHs soln., 0.0001-0.004 wt.%, w.r.t. the NaOH soln., of silicone oils and/or paraffins and/or alcohols are added to the absorption system. ADVANTAGE - Absorption effect is high, and there is negligible residual content (0.3%) of H2S, even with a high initial concn. (2000-3000 mg/cubic m). High quality solns. of Na2S and/or NaHS, with only small amts. of Na2S2O3, are obtd. In an example, 150 kg/h of H2S was led with a waste air stream of 50,000 cubic m/h into an absorber fed with 1500 1/h or NaOH (200 g/l of NaOH and 40 g/l of hemicellulose), giving conversion to a soln. contg. 120 g/l of Na2S and 40 g/l of NaHS. The amt. of Na2S2O3 formed was 28.5 g/l. During 24 h, 2 x 100 ml of polyalkylene glycol was added discontinuously, when the formation of Na2S2O3 fell to 7.5 g/l. The content of residual H2S was 0.3-0.1 wt.%, compared with an initial value of 1 wt. |
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ADVANTAGE - Absorption effect is high, and there is negligible residual content (0.3%) of H2S, even with a high initial concn. (2000-3000 mg/cubic m). High quality solns. of Na2S and/or NaHS, with only small amts. of Na2S2O3, are obtd. In an example, 150 kg/h of H2S was led with a waste air stream of 50,000 cubic m/h into an absorber fed with 1500 1/h or NaOH (200 g/l of NaOH and 40 g/l of hemicellulose), giving conversion to a soln. contg. 120 g/l of Na2S and 40 g/l of NaHS. The amt. of Na2S2O3 formed was 28.5 g/l. During 24 h, 2 x 100 ml of polyalkylene glycol was added discontinuously, when the formation of Na2S2O3 fell to 7.5 g/l. The content of residual H2S was 0.3-0.1 wt.%, compared with an initial value of 1 wt.</description><language>eng ; ger</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING</subject><creationdate>1993</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=19930311&DB=EPODOC&CC=DE&NR=4129566A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930311&DB=EPODOC&CC=DE&NR=4129566A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MOOZ, BIRGIT</creatorcontrib><creatorcontrib>BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE</creatorcontrib><creatorcontrib>SCHMIDT, WOLFGANG</creatorcontrib><creatorcontrib>SPERHACKE, ROLAND., O-6800 SAALFELD, DE</creatorcontrib><creatorcontrib>HARTWICH, WALTER, O-6820 RUDOLSTADT, DE</creatorcontrib><title>Absorption of hydrogen sulphide from waste contg. carbon di:sulphide from viscose prodn. - in sodium hydroxide soln. contg. silicone oil or paraffin or alcohol</title><description>Spray columns are used as absorber and NaOH soln. as absorbent, with recovery of Na2S and/or NaHs soln., 0.0001-0.004 wt.%, w.r.t. the NaOH soln., of silicone oils and/or paraffins and/or alcohols are added to the absorption system. ADVANTAGE - Absorption effect is high, and there is negligible residual content (0.3%) of H2S, even with a high initial concn. (2000-3000 mg/cubic m). High quality solns. of Na2S and/or NaHS, with only small amts. of Na2S2O3, are obtd. In an example, 150 kg/h of H2S was led with a waste air stream of 50,000 cubic m/h into an absorber fed with 1500 1/h or NaOH (200 g/l of NaOH and 40 g/l of hemicellulose), giving conversion to a soln. contg. 120 g/l of Na2S and 40 g/l of NaHS. The amt. of Na2S2O3 formed was 28.5 g/l. During 24 h, 2 x 100 ml of polyalkylene glycol was added discontinuously, when the formation of Na2S2O3 fell to 7.5 g/l. The content of residual H2S was 0.3-0.1 wt.%, compared with an initial value of 1 wt.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjDsOwjAQRNNQIOAOe4Eg8YsEXcRHHIA-cux1spLjtbzhdxquihFp6KhmpHnzxtmrrIVj6Ik9sIX2aSI36EGuLrRkEGzkDu5KegTNvm_moFWsE21o9wvdSDQLQohs_BxyoKRhQ9fuq318SGGXtsEk5ChVBCYHHCGoqKxNt9SV09yym2Yjq5zgbMhJBqfjZX_OMXCFEpRGj311OK4Xy-2mKMrF6g_kDelKU8U</recordid><startdate>19930311</startdate><enddate>19930311</enddate><creator>MOOZ, BIRGIT</creator><creator>BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE</creator><creator>SCHMIDT, WOLFGANG</creator><creator>SPERHACKE, ROLAND., O-6800 SAALFELD, DE</creator><creator>HARTWICH, WALTER, O-6820 RUDOLSTADT, DE</creator><scope>EVB</scope></search><sort><creationdate>19930311</creationdate><title>Absorption of hydrogen sulphide from waste contg. carbon di:sulphide from viscose prodn. - in sodium hydroxide soln. contg. silicone oil or paraffin or alcohol</title><author>MOOZ, BIRGIT ; BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE ; SCHMIDT, WOLFGANG ; SPERHACKE, ROLAND., O-6800 SAALFELD, DE ; HARTWICH, WALTER, O-6820 RUDOLSTADT, DE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DE4129566A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>1993</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>MOOZ, BIRGIT</creatorcontrib><creatorcontrib>BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE</creatorcontrib><creatorcontrib>SCHMIDT, WOLFGANG</creatorcontrib><creatorcontrib>SPERHACKE, ROLAND., O-6800 SAALFELD, DE</creatorcontrib><creatorcontrib>HARTWICH, WALTER, O-6820 RUDOLSTADT, DE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MOOZ, BIRGIT</au><au>BURKHARDT, KLAUS, O-6822 RUDOLSTADT, DE</au><au>SCHMIDT, WOLFGANG</au><au>SPERHACKE, ROLAND., O-6800 SAALFELD, DE</au><au>HARTWICH, WALTER, O-6820 RUDOLSTADT, DE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Absorption of hydrogen sulphide from waste contg. carbon di:sulphide from viscose prodn. - in sodium hydroxide soln. contg. silicone oil or paraffin or alcohol</title><date>1993-03-11</date><risdate>1993</risdate><abstract>Spray columns are used as absorber and NaOH soln. as absorbent, with recovery of Na2S and/or NaHs soln., 0.0001-0.004 wt.%, w.r.t. the NaOH soln., of silicone oils and/or paraffins and/or alcohols are added to the absorption system. ADVANTAGE - Absorption effect is high, and there is negligible residual content (0.3%) of H2S, even with a high initial concn. (2000-3000 mg/cubic m). High quality solns. of Na2S and/or NaHS, with only small amts. of Na2S2O3, are obtd. In an example, 150 kg/h of H2S was led with a waste air stream of 50,000 cubic m/h into an absorber fed with 1500 1/h or NaOH (200 g/l of NaOH and 40 g/l of hemicellulose), giving conversion to a soln. contg. 120 g/l of Na2S and 40 g/l of NaHS. The amt. of Na2S2O3 formed was 28.5 g/l. During 24 h, 2 x 100 ml of polyalkylene glycol was added discontinuously, when the formation of Na2S2O3 fell to 7.5 g/l. The content of residual H2S was 0.3-0.1 wt.%, compared with an initial value of 1 wt.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING |
| title | Absorption of hydrogen sulphide from waste contg. carbon di:sulphide from viscose prodn. - in sodium hydroxide soln. contg. silicone oil or paraffin or alcohol |
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