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Natural substance scale inhibitor for flue gas turbine

A flue gas turbine and natural material technology, applied in the direction of inorganic chemistry, silicon compounds, non-metallic elements, etc., can solve the problem of fly ash deposition on the surface of catalytic cracking cigarette machine blades that has not been found, so as to reduce unplanned shutdown and prolong operation cycle effect

Inactive Publication Date: 2016-08-24
SHANDONG QINGYISHAN PETROCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, it has not been found that this substance can be used to prevent and control the deposition of fly ash on the surface of catalytic cracking cigarette machine blades

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The vermiculite is selected from Lingshou County Jiayu Mineral Products Processing Plant, which is used for thermal insulation with an uncalcined particle size of less than 20 microns. The catalyst powder is a catalyst fine powder with particles less than 80 mesh screened out by MLC catalytic cracking catalyst balancer. According to the national standard GB / T219-2008 coal ash fusibility test method, fine catalyst powder (less than 80 mesh) is added with various proportions of vermiculite to investigate its ash fusibility, especially the deformation temperature.

[0028] SiO2 Al2O3 Fe2O3 MgO 41％ 10％ 8％ 22％

[0029] add ratio Deformation temperature (DT) Softening temperature (ST) 0 675 683 0.5％ 677 681 1％ 685 689 1.5％ 692 699 2％ 695 705 3％ 699 708 65％ 930 960

[0030] At the same time, the catalyst powder added with vermiculite, after melting and condensing, can be visibly looser and it...

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Abstract

A natural substance scale inhibitor for a flue gas turbine is provided; a natural uncalcined vermiculite powder is used as the scale inhibitor for the flue gas turbine in catalytic cracking; the scale inhibitor can inhibit scaling of flue gas turbine blades, so as to reduce or eliminate bearing bush standard-exceeding vibration due to scaling of the flue gas turbine blades and shutdown descaling.

Description

technical field [0001] The invention relates to a natural material scale inhibitor for flue gas turbines, which is suitable for oil refining enterprises to inhibit scaling of flue gas turbine blades in catalytic cracking energy return units. Background technique [0002] Flue gas turbines are important energy recovery equipment for catalytic cracking units in oil refineries. Flue gas energy recovery units have significant energy-saving and environmental protection benefits, but they are also one of the equipment with the highest failure rate in the refining and chemical industry. In some refineries, the number of outages due to excessive vibration of flue gas turbines accounts for 40% of the total number of outages, and blade fouling is an important reason for outages due to excessive vibration. The regenerated flue gas (generated by the main air at the outlet of the fan after being burnt by the regenerator) is separated by a cyclone with a temperature of more than 600 degre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
Inventor 焦现广王艾伍朱光亮信召伟王传栋刘振
Owner SHANDONG QINGYISHAN PETROCHEM TECH CO LTD