Title:
CATALYTIC CRACKING FRACTIONATION AND ABSORBING-STABILIZING SYSTEM AND ENERGY-SAVING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/074306
Kind Code:
A1
Abstract:
The present invention provides a catalytic cracking fractionation and absorbing-stabilizing system and an energy-saving method. A main fractionation tower waste heat refrigerator, a rich gas waste heat refrigerator and a stabilizing tower waste heat refrigerator are arranged in the catalytic cracking fractionation and absorbing-stabilizing system, so that low-temperature waste heat of the system main fractionating tower top, of rich gas, of stable gasoline and of an absorption tower middle heat exchange flow stream is used as the driving heat source of the refrigerators, cooling crude gasoline and recycle gasoline to temperatures below 40°C; an absorption tower is controlled to operate at the low temperature, the heat load of a desorption tower and a stabilizing tower is reduced, taken-out heat of the refrigerators is cooled by high-temperature cooling water, and cooling water consumption is reduced. In addition, a developed waste pressure power generation unit and a developed waste heat power generation unit are matched to convert medium-to-high pressure of dry gas and low-grade waste heat of other products in the system into electrical energy that can be incorporated into a power grid, supplementing the electricity utilization of a dry gas compressor, and reducing system operation costs to a minimum.
Inventors:
SUI HONG (CN)
HAN ZHEN (CN)
LI XINGANG (CN)
LI JINGYI (CN)
HAN ZHEN (CN)
LI XINGANG (CN)
LI JINGYI (CN)
Application Number:
PCT/CN2014/093746
Publication Date:
May 19, 2016
Filing Date:
December 12, 2014
Export Citation:
Assignee:
UNIV TIANJIN (CN)
PEI YANG NAT DISTILLATION TECHNOLOGY CORP LTD (CN)
PEI YANG NAT DISTILLATION TECHNOLOGY CORP LTD (CN)
International Classes:
C10G53/00; C10G7/02; F01K27/00; F01K27/02
Foreign References:
| CN102746882A | 2012-10-24 | |||
| CN102382680A | 2012-03-21 | |||
| CN101659876A | 2010-03-03 | |||
| US5953927A | 1999-09-21 |
Other References:
QIAN, BOZHANG: "Waste Heat Refrigeration in FCC Fractionator under Low Temperature", PETROLEUM PROCESSING AND PETROCHEMICALS, no. 5, 31 May 1990 (1990-05-31), ISSN: 1005-2399
Attorney, Agent or Firm:
BEI&OCEAN (CN)
天津市北洋有限责任专利代理事务所 (CN)
天津市北洋有限责任专利代理事务所 (CN)
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