发明名称 |
Process for drying CH2F2 refrigerant utilizing zeolite |
摘要 |
Difluoromethane (R32) is of current interest as a partial replacement for chlorodifluoromethane (R22) refrigerant heretofore widely used in vapor compression refrigeration systems. R32 has, however, proved to be more reactive than is desirable with the zeolite A adsorbent-desiccant compositions used in such systems to prevent corrosion and freeze-up problems. The sodium cation form of a zeolite having the crystal structure of zeolite B is found to be an effective adsorbent for that purpose and to be significantly less reactive with the R32.
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申请公布号 |
US5347822(A) |
申请公布日期 |
1994.09.20 |
申请号 |
US19930171959 |
申请日期 |
1993.12.23 |
申请人 |
UOP |
发明人 |
LAVIN, MARYELLEN;COHEN, ALAN P.;GREENLAY, NANETTE;CANNAN, THOMAS R.;HINCHEY, RICHARD J. |
分类号 |
B01D15/00;B01D53/28;C07C17/38;C09K5/04;(IPC1-7):F25B47/00 |
主分类号 |
B01D15/00 |
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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