发明名称 |
СПОСОБ ОЧИСТКИ ГАЗОВ ОТ ФОРМАЛЬДЕГИДА |
摘要 |
FIELD: polymer materials. SUBSTANCE: invention is intended for use in production of urea-formaldehyde press materials by bringing reactants into contact with chemisorbent, more particularly sawdust modified by aqueous solution of urea and phosphoric acid at weight ratio (0,5-1):(0.25-1) and 90-95 C for 0.5-1 h and thermally treated for 1 h at 140-150 C. Weight ratio of solid phase to liquid phase is 1:(4.5-5.4). As modifying substances, urea is also utilized together with nitric acid at 1:1 weight ratio. EFFECT: excluded emission of formaldehyde and reduced cost due to low price of sorption materials having important sorption capacity. 2 cl, 1 tbl, 2 ex |
申请公布号 |
RU2002121194(A) |
申请公布日期 |
2004.03.27 |
申请号 |
RU20020121194 |
申请日期 |
2002.08.05 |
申请人 |
Учреждение образовани "Белорусский государственный технологический университет" (BY) |
发明人 |
Шманькова Натали Анатольевна (BY);Орехова Светлана Ефимовна (BY);Ашуйко Валерий Аркадьевич (BY);Хмылко Людмила Ивановна (BY) |
分类号 |
B01D53/72;B01D53/04;B01J20/22;B01J20/30 |
主分类号 |
B01D53/72 |
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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