发明名称 |
Method for production of acrylic acid |
摘要 |
A method is disclosed which produces acrylic acid in a high yield as maintaining the conditions for purifying acrylic acid in constant ranges and preventing the acrylic acid from polymerization. By using a reactor which has first reaction zone and second reaction zone formed of different reaction tubes, propylene concentration adjusting in the range of 7-15 vol. % and water concentration adjusting in the range of 0-10 vol. % are introduced thereto thereby obtaining an acrylic acid-containing gas. Then the gas is introduced to an acrylic acid absorption column to adjust water concentration in the range of 1-45 wt. %, thereby preventing from polymerization.
|
申请公布号 |
US7038079(B2) |
申请公布日期 |
2006.05.02 |
申请号 |
US20030632762 |
申请日期 |
2003.08.01 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
HIRAO HARUNORI;TANIMOTO MICHIO |
分类号 |
C07C51/235;C07C57/05;C07B61/00;C07C51/21;C07C51/25 |
主分类号 |
C07C51/235 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|