发明名称 |
METHOD FOR PURIFICATION OF DIMETHYLAMIDE-CONTAINING PROCESS WATER |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention can be used for purification of dimethylamide-containing process water and for recycling of valuable components used in synthetic fibers production. For method implementation the initial waste water is beforehand divided by baromembrane separation to purified water (permeate) and concentrate. The purified water is returned to production line and the concentrate is filtered through active charcoal with following active charcoal regeneration by the flow of desorbent (hot nitrogen with temperature 150-200C) and separation of concentrated dimethylamide. ^ EFFECT: pure water recycling, economical efficiency enhancing of the process of dimethylamide sorption with active charcoal including its following extraction by desorbent flow. ^ 1 ex, 1 dwg, 1 tbl |
申请公布号 |
RU2367623(C2) |
申请公布日期 |
2009.09.20 |
申请号 |
RU20070106501 |
申请日期 |
2007.02.20 |
申请人 |
KOVALEV DMITRIJ ALEKSANDROVICH;KOVALEV ALEKSANDR STEFANOVICH;FILIMONOV ANDREJ VALER'EVICH |
发明人 |
KOVALEV DMITRIJ ALEKSANDROVICH;KOVALEV ALEKSANDR STEFANOVICH;FILIMONOV ANDREJ VALER'EVICH |
分类号 |
B01J20/34;C02F1/28;C02F1/44;C02F9/02 |
主分类号 |
B01J20/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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