发明授权
- 专利标题： Reducing fouling in heat exchangers
- 专利标题（中）： 减少换热器中的污垢
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申请号： US13313234申请日： 2011-12-07
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公开(公告)号： US09139784B2公开(公告)日： 2015-09-22
- 发明人: Philippa Hocking , Fazle Sibtain , Eric Cheluget
- 申请人： Philippa Hocking , Fazle Sibtain , Eric Cheluget
- 申请人地址： CH Fribourg
- 专利权人： NOVA Chemicals (International) S.A.
- 当前专利权人： NOVA Chemicals (International) S.A.
- 当前专利权人地址： CH Fribourg
- 代理商 Julie L. Heinrich
- 主分类号： F23L15/04
- IPC分类号： F23L15/04 ; C08F6/12 ; C10G75/04 ; F28F19/00 ; C08F10/02
摘要：
In the solution polymerization of ethylene co and homopolymers the solution leaving the reactor is heated to separate polymer from solvent and residual monomers. Fouling in the heat exchanger may be reduced by adding to the solution from 0.01 to 100 ppm by weight of a polyoxyalkylene compound of the formula HO—(CH2CH2O)M[CH2CH(CH3)O]N(CH2CH2O)PH wherein M, N and P each represent the average number of repeating units and M is from 0 to 20, N is from 2 to 50 and P is from 0 to 20 and passing the solution through a heat exchanger to increase its temperature by at least 20° C.
公开/授权文献
- US20130149657A1 REDUCING FOULING IN HEAT EXCHANGERS 公开/授权日：2013-06-13