Device for continuously recovering high-content phosgene from tail gas of isocyanate production
The utility model discloses a device for continuously recovering high-content phosgene from tail gas of isocyanate production. The device comprises an absorption tower and a stripper, wherein the tower top of the absorption tower is connected with a draught fan which is used for discharging residual...
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| creator | WANG XIAOHU TONG LIN YAN CHANG'EN JI CHUANWU LUO ZHICAI LI GUOPENG ZENG LEI |
| description | The utility model discloses a device for continuously recovering high-content phosgene from tail gas of isocyanate production. The device comprises an absorption tower and a stripper, wherein the tower top of the absorption tower is connected with a draught fan which is used for discharging residual gas to a tail gas treatment system, the tower top of the absorption tower is also connected with a solvent storage tank which is used for conveying a solvent to the absorption tower, the tower bottom of the absorption tower is connected with a tail gas buffer tank, and the tower bottom of the absorption tower is also connected with the tower top of the stripper to convey a solvent solution after absorbing phosgene to the stripper; and the tower bottom of the stripper is connected with the tower top of the absorption tower, and the tower top of the stripper is connected with a phosgene buffer tank so as to convey the high-content phosgene to a user by virtue of the phosgene buffer tank. In the device disclosed by the utility model, the absorption tower and the stripper are adopted to continuously recover the high-content phosgene from the tail gas of isocyanate production; and the device is suitable for recovering the high-content phosgene in all production processes of isocyanate, can effectively improve the utilization rate of phosgene, and can enlarge the application of recovered phosgene at the same time. |
| format | Patent |
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The device comprises an absorption tower and a stripper, wherein the tower top of the absorption tower is connected with a draught fan which is used for discharging residual gas to a tail gas treatment system, the tower top of the absorption tower is also connected with a solvent storage tank which is used for conveying a solvent to the absorption tower, the tower bottom of the absorption tower is connected with a tail gas buffer tank, and the tower bottom of the absorption tower is also connected with the tower top of the stripper to convey a solvent solution after absorbing phosgene to the stripper; and the tower bottom of the stripper is connected with the tower top of the absorption tower, and the tower top of the stripper is connected with a phosgene buffer tank so as to convey the high-content phosgene to a user by virtue of the phosgene buffer tank. In the device disclosed by the utility model, the absorption tower and the stripper are adopted to continuously recover the high-content phosgene from the tail gas of isocyanate production; and the device is suitable for recovering the high-content phosgene in all production processes of isocyanate, can effectively improve the utilization rate of phosgene, and can enlarge the application of recovered phosgene at the same time.</description><language>eng</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS</subject><creationdate>2015</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=20150422&DB=EPODOC&CC=CN&NR=204281332U$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25566,76549</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150422&DB=EPODOC&CC=CN&NR=204281332U$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG XIAOHU</creatorcontrib><creatorcontrib>TONG LIN</creatorcontrib><creatorcontrib>YAN CHANG'EN</creatorcontrib><creatorcontrib>JI CHUANWU</creatorcontrib><creatorcontrib>LUO ZHICAI</creatorcontrib><creatorcontrib>LI GUOPENG</creatorcontrib><creatorcontrib>ZENG LEI</creatorcontrib><title>Device for continuously recovering high-content phosgene from tail gas of isocyanate production</title><description>The utility model discloses a device for continuously recovering high-content phosgene from tail gas of isocyanate production. The device comprises an absorption tower and a stripper, wherein the tower top of the absorption tower is connected with a draught fan which is used for discharging residual gas to a tail gas treatment system, the tower top of the absorption tower is also connected with a solvent storage tank which is used for conveying a solvent to the absorption tower, the tower bottom of the absorption tower is connected with a tail gas buffer tank, and the tower bottom of the absorption tower is also connected with the tower top of the stripper to convey a solvent solution after absorbing phosgene to the stripper; and the tower bottom of the stripper is connected with the tower top of the absorption tower, and the tower top of the stripper is connected with a phosgene buffer tank so as to convey the high-content phosgene to a user by virtue of the phosgene buffer tank. In the device disclosed by the utility model, the absorption tower and the stripper are adopted to continuously recover the high-content phosgene from the tail gas of isocyanate production; and the device is suitable for recovering the high-content phosgene in all production processes of isocyanate, can effectively improve the utilization rate of phosgene, and can enlarge the application of recovered phosgene at the same time.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2015</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjDsOwjAQBdNQIOAOK_pI4FDQBxAVFakty2zslcyu5U-k3J4gcQCqV8zMWzf6ghNZhFESWOFCXKXmMENCKxMmYgeenG-_ELlA9JId8lIkeUMxFMCZDDICZbGzYVMQYpJXtYWEt81qNCHj7rebZn-7Pvt7i1E05mjs8lV0_1CHkzofu04NQ_eX9AFmpz55</recordid><startdate>20150422</startdate><enddate>20150422</enddate><creator>WANG XIAOHU</creator><creator>TONG LIN</creator><creator>YAN CHANG'EN</creator><creator>JI CHUANWU</creator><creator>LUO ZHICAI</creator><creator>LI GUOPENG</creator><creator>ZENG LEI</creator><scope>EVB</scope></search><sort><creationdate>20150422</creationdate><title>Device for continuously recovering high-content phosgene from tail gas of isocyanate production</title><author>WANG XIAOHU ; TONG LIN ; YAN CHANG'EN ; JI CHUANWU ; LUO ZHICAI ; LI GUOPENG ; ZENG LEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN204281332UU3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2015</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>WANG XIAOHU</creatorcontrib><creatorcontrib>TONG LIN</creatorcontrib><creatorcontrib>YAN CHANG'EN</creatorcontrib><creatorcontrib>JI CHUANWU</creatorcontrib><creatorcontrib>LUO ZHICAI</creatorcontrib><creatorcontrib>LI GUOPENG</creatorcontrib><creatorcontrib>ZENG LEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WANG XIAOHU</au><au>TONG LIN</au><au>YAN CHANG'EN</au><au>JI CHUANWU</au><au>LUO ZHICAI</au><au>LI GUOPENG</au><au>ZENG LEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Device for continuously recovering high-content phosgene from tail gas of isocyanate production</title><date>2015-04-22</date><risdate>2015</risdate><abstract>The utility model discloses a device for continuously recovering high-content phosgene from tail gas of isocyanate production. The device comprises an absorption tower and a stripper, wherein the tower top of the absorption tower is connected with a draught fan which is used for discharging residual gas to a tail gas treatment system, the tower top of the absorption tower is also connected with a solvent storage tank which is used for conveying a solvent to the absorption tower, the tower bottom of the absorption tower is connected with a tail gas buffer tank, and the tower bottom of the absorption tower is also connected with the tower top of the stripper to convey a solvent solution after absorbing phosgene to the stripper; and the tower bottom of the stripper is connected with the tower top of the absorption tower, and the tower top of the stripper is connected with a phosgene buffer tank so as to convey the high-content phosgene to a user by virtue of the phosgene buffer tank. In the device disclosed by the utility model, the absorption tower and the stripper are adopted to continuously recover the high-content phosgene from the tail gas of isocyanate production; and the device is suitable for recovering the high-content phosgene in all production processes of isocyanate, can effectively improve the utilization rate of phosgene, and can enlarge the application of recovered phosgene at the same time.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS |
| title | Device for continuously recovering high-content phosgene from tail gas of isocyanate production |
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