Anti-coking device and anti-coking method for catalytic cracking equipment
A catalytic cracking and anti-coking technology, which is applied in the fields of treatment equipment corrosion/fouling inhibition, petroleum industry, hydrocarbon oil treatment, etc. It can solve the serious coking phenomenon at the outlet end of oil and gas pipelines and affect the operation of catalytic cracking equipment, etc., to prevent coking , the effect of inhibiting coking
Inactive Publication Date: 2017-06-16
陕西双翼石油化工有限责任公司 +1
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[0003] The purpose of the present invention is to provide an anti-coking device for catalytic cracking equipment to solve the problem that the coking phenomenon at the outlet end of the oil and gas pipeline is serious and affects the operation of catalytic cracking equipment
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[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0022] The anti-coking device structure of catalytic cracking equipment of the present invention is as follows figure 1 , figure 2 Shown: including the oil and gas pipeline 4 and the steam ring pipe 1, the steam ring pipe 1 is installed on the outer wall of the oil and gas pipeline 4, the distance between the center line of the steam ring pipe 1 and the outlet end of the oil and gas pipeline 4 is 70-120 mm, the oil and gas pipeline 4 The inner diameter gradually increases from the inlet end to the outlet end, and the angle between the side of the longitudinal section and the horizontal direction is 2.5°-3.5°. The inner side of the steam ring pipe 1 is fixed with an annular plate 2, and the annular plate 2 protrudes from the end surface of the steam ring pipe 1 close to the outlet end of the oil and gas pipeline 4, and the protruding section is...
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Abstract
The invention discloses a device for preventing catalytic cracking equipment from coking. The device comprises an oil and gas pipeline and a steam loop mounted on the outer wall of the oil and gas pipeline, wherein the inner diameter of the oil and gas pipeline is gradually increased from the inlet end to the outlet end, and a gas inlet pipe is mounted on the outer surface of the steam loop. The invention further discloses a method for preventing the catalytic cracking equipment from coking. According to the method, anti-coking steam is injected into the steam loop from the gas inlet pipe before raw materials are added to a reactor of the catalytic cracking equipment, and the injecting time of the anti-coking steam is as long as the introducing time of stirring steam of fractionating tower bottom of the catalytic cracking equipment. By means of the gradually opening oil and gas pipeline, the speed of the oil and gas outlet end can be reduced appropriately, meanwhile, the steam loop is mounted in the position with a certain distance to the oil and gas outlet end, superheated steam is ejected at a high speed through the loop, and a steam screen is formed to cover oil and gas flow and damage eddy flow at the outlet end of the pipeline, so that the coking at the outlet end of the pipeline is inhibited; the outlet end of the pipeline can be effectively prevented from coking by the aid of high-speed impact of the steam.
Description
technical field [0001] The invention belongs to the technical field of petroleum machinery, and in particular relates to an anti-coking device for catalytic cracking equipment, and also relates to an anti-coking method for catalytic cracking equipment. Background technique [0002] Catalytic cracking equipment is an important production unit for the integrated development of refining and chemical in petroleum processing enterprises, and shoulders the important task of lightening oil products and obtaining chemical raw materials. The long-term full-load operation of catalytic cracking equipment plays a decisive role in the profit growth of refining and chemical enterprises. However, in the past ten years, the trend of heavy catalytic raw materials, that is, high density, high viscosity, and high carbon-to-hydrogen ratio has intensified, so catalytic devices inevitably face the problem of coking in riser reactors, settlers, and reaction oil-gas systems. Troubled, equipment ca...
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IPC IPC(8): C10G75/00
Inventor 王庆元高瑞
Owner 陕西双翼石油化工有限责任公司