Separation of olefins from olefins/paraffins mixed gas
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-015/08
C07C-007/12
출원번호
US-0855957
(2013-04-03)
등록번호
US-9034185
(2015-05-19)
우선권정보
KR-10-2007-0030970 (2007-03-29)
발명자
/ 주소
Kim, Jong-Nam
Park, Jong-Ho
Lee, Seong-Jun
Ko, Min-Su
Beum, Hee Tae
Park, Jongkee
Ko, Chang Hyun
Han, Sang Sup
Cho, Soon-Haeng
출원인 / 주소
KOREA INSTITUTE OF ENERGY RESEARCH
대리인 / 주소
LRK Patent Law Firm
인용정보
피인용 횟수 :
1인용 특허 :
2
초록▼
A method and apparatus for the separation of C4 olefins (butene-1, trans-2-butene, cis-2-butene, etc.) and C4 paraffins (normal butane, isobutane, etc) from a C4 hydrocarbon mixed gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The apparatus includes
A method and apparatus for the separation of C4 olefins (butene-1, trans-2-butene, cis-2-butene, etc.) and C4 paraffins (normal butane, isobutane, etc) from a C4 hydrocarbon mixed gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The apparatus includes several adsorption towers loaded with an adsorbent which selectively adsorb olefins and two distillation towers for the separation of the mixture gases of olefins/desorbents and paraffins/desorbents respectively. The basic operating process of the adsorption tower comprises an adsorption step of selectively adsorbing C4 olefin from the feeding mixture, a C4 olefin rinse step of removing a small amount of C4 paraffins adsorbed together with C4 olefins, and a desorption step of desorbing C4 olefins by using a desorbent, and further comprises pressure equalization step, concurrent depressurization step, and accumulation pressure step to increase the yield and concentration of olefins depending on the operation pressure of the adsorption tower.
대표청구항▼
1. An apparatus for separating C4 olefins from a mixture gas of C4 olefins/paraffins by carrying out repeated sequential adsorbing, rinsing and desorbing in such a way of performing displacement desorption using desorbents, in adsorption towers loaded with adsorbents which selectively adsorb olefins
1. An apparatus for separating C4 olefins from a mixture gas of C4 olefins/paraffins by carrying out repeated sequential adsorbing, rinsing and desorbing in such a way of performing displacement desorption using desorbents, in adsorption towers loaded with adsorbents which selectively adsorb olefins and a distillation tower for the separation olefins/desorbents and a distillation tower for the separation of paraffins/desorbents that separate the mixture gas recovered from the adsorption towers by using desorbents, wherein the adsorption tower is configured to include:an adsorption tower (AD-1) that is connected with a feeding conduit (1) that feeds the mixture gas of C4 oleffins/paraffins, a C4 olefins/desorbents discharging conduit (2) that is connected with a distillation tower (D2), a conduit (3) that feeds a predetermined amount of C4 olefins from the distillation (D2), a conduit (4) that guides the paraffins/desorbents discharged at the rinsing to the distillation tower (D1), a conduit (5) that feeds the paraffins/desorbents discharged at the adsorbing to the distillation tower (D1), and a conduit (6) that is fed with desorbents separated from the distillation towers D1 and D2);an adsorption tower (AD-2) that is connected with a feeding conduit (1) that feeds the mixture gas of C4 olefins/paraffins, a C4 olefins/desorbents discharging conduit (2) that is connected with a distillation tower (D2), a conduit (3) that feeds a predetermined amount of C4 olefins from the distillation (D2), a conduit (4) that guides the paraffins/desorbents discharged at the rinsing to the distillation tower (D1), a conduit (5) that feeds the paraffins/desorbents discharged at the adsorbing to the distillation tower (D1), and a conduit (6) that is fed with desorbents separated from the distillation towers (D1 and D2); andan adsorption tower (AD-3) that is connected with a feeding conduit (1) that feeds the mixture gas of C4 olefins/paraffins, a C4 olefins/desorbents discharging conduit (2) that is connected with a distillation tower (D2), a conduit (3) that feeds a predetermined amount of C4 olefins from the distillation (D2), a conduit (4) that guides the araffms/desorbents discharged at the rinsing to the distillation tower D1), a conduit(5) that feeds the paraffins/desorbents discharged at the adsorbing to the distillation tower (D1), and a conduit (6) that is fed with desorbents separated from the distillation towers (D1 and D2), andwherein the paraffins/desorbents distillation tower is the distillation tower (D1) that separates the C4 paraffins and desorbents from the adsorption towers (AD-1, AD-2, and AD-3) and the olefins/desorbents distillation tower is the distillation tower (D2) that separates the C4 olefins and desorbents from the adsorption towers (AD-1 AD-2, and AD-3). 2. The apparatus for separating C4 olefins from a mixture gas of C4 olefins/paraffins according to claim 1, further comprising a valve (7) for the conduit (4) guided to the distillation tower (D1). 3. The apparatus for separating C4 olefins from a mixture gas of C4 olefins/paraffins according to claim 1, wherein the olefin selective absorbent is selected among the π-complex adsorbent forming π-complex selectively with olefins, type X zeolite or type Y zeolite. 4. The apparatus for separating C4 olefins from a mixture gas of C4 olefins/paraffins according to claim 1, wherein the desorbent is C5 hydrocarbon or C6 hydrocarbon.
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이 특허에 인용된 특허 (2)
Ramachandran Ramakrishnan (Allendale NJ) Dao Loc H. (Bound Brook NJ), Method of producing unsaturated hydrocarbons and separating the same from saturated hydrocarbons.
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