Study on Characteristics and Kinetics of Catalytic Degradation from Estonia Kerogen

ZHAO Gui-yu; LIU Luo-fu; LI Shu-yuan

The effects of catalysts on hydrocarbon generation from kerogen have been investigated by using simulation experiment and chemical catalysis mechanism. The simulated samples were selected from Estonia area. The catalytic action of different catalysts was studied on the product composition, hydrocarbon yield, kinetics of hydrocarbon generation. In the presence of carbonatite, the yield of generated hydrocarbon S₂ has been decreased because of the adsorption of carbonatite on pyrolysates. The insoluble salt, CaSO₄, as a catalyst, has enhanced kerogen degradation to increase the yield of hydrocarbon(S₂).The soluble salts including CaCl₂,Na₂SO₄ and NaHCO₃ have no effect on the hydrocarbon generation from kerogen. As the kinetics is concerned, carbonatite has a negative catalytic effect and decreases the reaction rate, but CaSO₄ has a positive effect and gives rise to the reaction rate. In addition, it is also found that the kinetic parameters, apparent activation energy and frequency factor, have a relationship with each other, which can be reasonably described by an exponential function.

Study on Characteristics and Kinetics of Catalytic Degradation from Estonia Kerogen

1. Key Laboratory for Hydrocarbon Accumulation Mechanism, Ministry of Education;Basin and Reservoir Research Center, University of Petroleum, Beijing 102249;

2. School of Chemical Engineering, University of Petroleum, Beijing 102249

Received Date: 2003-06-10

Rev Recd Date: 2003-08-25

Publish Date: 2004-09-10

Key words:

Abstract: The effects of catalysts on hydrocarbon generation from kerogen have been investigated by using simulation experiment and chemical catalysis mechanism. The simulated samples were selected from Estonia area. The catalytic action of different catalysts was studied on the product composition, hydrocarbon yield, kinetics of hydrocarbon generation. In the presence of carbonatite, the yield of generated hydrocarbon S₂ has been decreased because of the adsorption of carbonatite on pyrolysates. The insoluble salt, CaSO₄, as a catalyst, has enhanced kerogen degradation to increase the yield of hydrocarbon(S₂).The soluble salts including CaCl₂,Na₂SO₄ and NaHCO₃ have no effect on the hydrocarbon generation from kerogen. As the kinetics is concerned, carbonatite has a negative catalytic effect and decreases the reaction rate, but CaSO₄ has a positive effect and gives rise to the reaction rate. In addition, it is also found that the kinetic parameters, apparent activation energy and frequency factor, have a relationship with each other, which can be reasonably described by an exponential function.

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Reference (6)

[1]	Hubbard A B, Robinson W E. U.S. Bur. Mines, Rept. Invest., No.4744,1950.
[2]	Weitkamp A W, Cutberlet L C. Ind.Eng Chem.,Process Des,Dev.,9,1970:3.
[3]	Chen W J, Nuttall H E. 86th AICHE National Meeting, Houston,Texas,1979,4.
[4]	李术元,钱家麟,等.油页岩热解本征动力学的研究.石油学报(石油加工),1986,2(2):1～11[Li Shuyuan,Qian Jialin, et al. Study on intrinsic kinetics of oil shale pyrolysis. Acta Petrolei Sinica(Petroleum Processing Section), 1986, 2(2):1～11]
[5]	杨国华,吴肇亮,钱家麟. 不同类型干酪根热解生烃动力学.石油大学学报,1990,14(1):19～25[Yang Guohua,Wu Zhaoliang, Qian Jailing. Study on degradation kinetics of different types of kerogens. Journal of Petroleum University, 1990,14(1):19～25]
[6]	李术元,郭绍辉,徐红喜,等.烃源岩热解生烃动力学及其应用.沉积学报,1997,15(2):138～141[Li Shuyuan,Guo Shaohui,Xu Hongxi, et al. Kinetics of the oil and gas generation from kerogen and its application to the Turpan-Hami Basin. Acta Sedimentologica Sinica, 1997, 15(2):138～141]

[1]	Hubbard A B, Robinson W E. U.S. Bur. Mines, Rept. Invest., No.4744,1950.
[2]	Weitkamp A W, Cutberlet L C. Ind.Eng Chem.,Process Des,Dev.,9,1970:3.
[3]	Chen W J, Nuttall H E. 86th AICHE National Meeting, Houston,Texas,1979,4.
[4]	李术元,钱家麟,等.油页岩热解本征动力学的研究.石油学报(石油加工),1986,2(2):1～11[Li Shuyuan,Qian Jialin, et al. Study on intrinsic kinetics of oil shale pyrolysis. Acta Petrolei Sinica(Petroleum Processing Section), 1986, 2(2):1～11]
[5]	杨国华,吴肇亮,钱家麟. 不同类型干酪根热解生烃动力学.石油大学学报,1990,14(1):19～25[Yang Guohua,Wu Zhaoliang, Qian Jailing. Study on degradation kinetics of different types of kerogens. Journal of Petroleum University, 1990,14(1):19～25]
[6]	李术元,郭绍辉,徐红喜,等.烃源岩热解生烃动力学及其应用.沉积学报,1997,15(2):138～141[Li Shuyuan,Guo Shaohui,Xu Hongxi, et al. Kinetics of the oil and gas generation from kerogen and its application to the Turpan-Hami Basin. Acta Sedimentologica Sinica, 1997, 15(2):138～141]

Study on Characteristics and Kinetics of Catalytic Degradation from Estonia Kerogen

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