Riser catalytic cracking device
A catalytic cracking device and riser technology, applied in the direction of catalytic cracking, cracking, chemical instruments and methods, etc., can solve the problems of high yield of dry gas and coke, achieve increased yield, improved oil and gas atomization effect, and improved shear The effect of tear ability
Inactive Publication Date: 2020-04-07
PETROCHINA CO LTD
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Embodiment 1
[0098] Embodiment 1: In order to investigate the comprehensive product distribution of the catalytic cracking unit of the present invention, the following experiment has been carried out: according to the preparation method of conventionally prepared semi-synthetic catalyst, according to 35% molecular sieve, 20% alumina, 8% aluminum sol binding agent And 37% kaolin catalyst formulation, prepared FCC catalyst. And the heavy oil micro-reaction evaluation was carried out. The evaluation conditions were as follows: the raw material oil was Xinjiang catalyst (the properties of the raw material are shown in Table 1), the ratio of solvent to oil was 6, and the reaction temperature was 500°C. The evaluation results are shown in Table 2.
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The invention provides a riser catalytic cracking device. The riser catalytic cracking device comprises: a riser reactor, wherein the inlet end of the riser reactor is communicated with an atomizing nozzle, and the outlet end of the riser reactor is communicated with a stripper; a catalyst regenerator, which comprises a catalyst inlet and a catalyst outlet, wherein the catalyst inlet is communicated with the stripper, and the catalyst outlet is communicated with the riser reactor. The riser reactor sequentially comprises a first reaction zone and a second reaction zone from the inlet end to the outlet end, wherein the inlet end of the first reaction zone is communicated with the atomizing nozzle; the outlet end of the first reaction zone is communicated with the second reaction zone; a non-reducing structure and a reducing structure are sequentially arranged from the inlet end to the outlet end of the first reaction zone; the reducing structure sequentially comprises a hole expanding structure, an isodiametric structure and a hole shrinkage structure in the direction from the inlet end of the first reaction zone to the outlet end of the first reaction zone; and the catalyst outletis communicated with the bottom of the non-reducing structure of the first reaction zone of the riser reactor.
Description
technical field [0001] The invention belongs to the field of catalytic cracking and relates to a riser catalytic cracking device. Background technique [0002] With the development of heavy crude oil and the rapid growth of market demand for light oil products, in order to meet the continuous increase in domestic market demand for gasoline, diesel fractions mainly come from atmospheric and vacuum units, catalytic cracking units, hydrocracking units and In the delayed coking unit, the diesel produced by the atmospheric and vacuum unit accounts for about 30% to 40% of the total diesel in the plant. Another problem is that there is a long-term shortage of domestic finished gasoline, and catalytic cracking gasoline accounts for 80% of the finished gasoline. Therefore, how to maximize the production of high-octane gasoline instead of straight-run diesel from heavy raw materials through catalytic cracking technology may be a new way to solve the above problems. [0003] US4585545...
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IPC IPC(8): B01J8/24B01J8/38C10G11/18C10G11/05
CPCB01J8/388B01J8/245C10G11/05C10G11/182C10G11/18
Inventor 柳召永张忠东王艳飞刘涛刘明霞王辰晨王莉汪毅樊红超翟佳宁孙志国杜晓辉
Owner PETROCHINA CO LTD