Method of producing unsaturated aldehyde and/or unsaturated acid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-045/34
C07C-051/16
출원번호
UP-0415167
(2009-03-31)
등록번호
US-7772442
(2010-08-30)
우선권정보
KR-10-2005-0015927(2005-02-25)
발명자
/ 주소
Yoo, Yeon Shick
Shin, Hyun Jong
Choi, Byung Yul
Choi, Young Hyun
Cho, Young Jin
Kim, Duk Ki
Park, Joo Yeon
Park, Kwang Ho
출원인 / 주소
LG Chem, Ltd.
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
Disclosed is a shell-and-tube reactor that may be used for fixed-bed catalytic partial oxidation, the reactor being characterized by including at least one reaction zone of a first-step reaction zone for mainly producing unsaturated aldehydes and a second-step reaction zone for mainly producing unsa
Disclosed is a shell-and-tube reactor that may be used for fixed-bed catalytic partial oxidation, the reactor being characterized by including at least one reaction zone of a first-step reaction zone for mainly producing unsaturated aldehydes and a second-step reaction zone for mainly producing unsaturated acids, wherein at least one reaction zone of the above reaction zones comprises two or more catalytic layers; each of the catalytic layers is packed with a formed product of catalyst that is different in pore density and/or pore size in a catalytically active component; and the pore density and/or pore size is controlled in such a manner that specific surface area of the catalytically active component increases from the inlet of the reactor to the outlet of the reactor. A method for producing unsaturated aldehydes and/or unsaturated fatty acids from olefins using the same reactor is also disclosed. According to the present invention, it is possible to control the temperature efficiently at a hot spot, thereby permitting stable use of a catalyst, and to produce unsaturated aldehydes and/or unsaturated fatty acids with high yield.
대표청구항▼
The invention claimed is: 1. A method for producing unsaturated aldehydes from olefins comprising partially oxidizing the olefins in a shell-and-tube reactor, wherein the shell-and-tube reactor comprises a reaction zone for producing unsaturated aldehydes, comprising two or more catalytic layers, w
The invention claimed is: 1. A method for producing unsaturated aldehydes from olefins comprising partially oxidizing the olefins in a shell-and-tube reactor, wherein the shell-and-tube reactor comprises a reaction zone for producing unsaturated aldehydes, comprising two or more catalytic layers, wherein each of the catalytic layers is packed with a formed product of catalyst that is different in pore density and/or pore size in a catalytically active component; and the pore density and/or pore size is controlled in such a manner that specific surface area of the catalytically active component increases from the inlet of the reactor to the outlet of the reactor. 2. The method according to claim 1, wherein the catalytically active component is a compound represented by the following formula 1: MoaAbBcCdDeEfFgOh [formula 1] wherein Mo is molybdenum; A is at least one element selected from the group consisting of Bi and Cr; B is at least one element selected from the group consisting of Fe, Zn, Mn, Nb and Te; C is at least one element selected from the group consisting of Co, Rh and Ni; D is at least one element selected from the group consisting of W, Si, Al, Zr, Ti, Cr, Ag and Sn; E is at least one element selected from the group consisting of P, Te, As, B, Sb, Sn, Nb, Cr, Mn, Zn, Ce and Pb; F is at least one element selected from the group consisting of Na, K, Li, Rb, Cs, Ta, Ca, Mg, Sr, Ba and MgO; and each of a, b, c, d, e, f and g represents the atomic ratio of each element, with the proviso that when a=10, b is a number of between 0.01 and 10, c is a number of between 0.01 and 10, d is a number of between 0 and 10, e is a number of between 0 and 10, f is a number of between 0 and 20, g is a number of between 0 and 10, and h is a number defined depending on the oxidation state of each of the above elements. 3. The method according to claim 1, wherein the formed product of catalyst is a formed catalyst obtained by forming the catalytically active component into a desired shape, or a supported catalyst obtained by supporting the catalytically active component onto an inert carrier having a desired shape. 4. The method according to claim 1, wherein the catalytic layer that has the smallest specific surface area of the catalytically active component by controlling the pore density and/or pore size includes the highest-temperature hot spot, and the specific surface area of the catalytically active component is 5-10 m2/g. 5. A method for producing unsaturated acids from unsaturated aldehydes comprising partially oxidizing the unsaturated aldehydes in a fixed-bed catalytic shell-and-tube reactor, the method being characterized by using the reactor as defined in claim 1, which includes a reaction zone for producing unsaturated aldehydes, comprising two or more catalytic layers, wherein each of the catalytic layers is packed with a formed product of catalyst that is different in pore density and/or pore size in a catalytically active component; and the pore density and/or pore size is controlled in such a manner that specific surface area of the catalytically active component increases from the inlet of the reactor to the outlet of the reactor. 6. The method according to claim 5, wherein the catalytically active component is a compound represented by the following formula 2: MoaWbVcAdBeCfOx wherein Mo is molybdenum; W is tungsten; V is vanadium; A is at least one element selected from the group consisting of iron (Fe), copper (Cu), bismuth (Bi), chrome (Cr), cobalt (Co) and manganese (Mn); B is at least one element selected from the group consisting of tin (Sn), antimony (Sb), nickel (Ni), cesium (Cs) and thallium (Tl); C is at least one element selected from the group consisting of alkali metals and alkaline earth metals; O is an oxygen atom; and each of a, b, c, d, e, f and x represents the atomic ratio of Mo, W, V, A, B, C and O atoms, with the proviso that when a=10, 0.5≦b≦4, 0.5≦c≦5, 0≦d≦5, 0≦e≦2, 0≦f≦2, and x is a number defined depending on the oxidation state of each of the above elements. 7. The method according to claim 5, wherein the formed product of catalyst is a formed catalyst obtained by forming the catalytically active component into a desired shape, or a supported catalyst obtained by supporting the catalytically active component onto an inert carrier having a desired shape. 8. The method according to claim 5, wherein the catalytic layer that has the smallest specific surface area of the catalytically active component by controlling the pore density and/or pore size includes the highest-temperature hot spot, and the specific surface area of the catalytically active component is 5-10 m2/g.
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