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Refining method of reforming aromatic oil

An aromatic oil and catalytic refining technology, applied in the direction of naphtha catalytic reforming, etc., can solve the problems of poor olefin removal effect, high content of generated oil colloid, large amount of oil, etc., and achieve the effect of reducing production cost.

Inactive Publication Date: 2005-05-25
曹炳铖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid-treated clay is mainly through adsorption or partial alkylation and olefin superposition condensation reaction, so as to achieve the purpose of removing olefins in aromatic oil. Although the refining method of clay has been widely used in industry, the removal of olefins The effect is poor, and due to the high operating temperature, the colloid content in the produced oil becomes higher and the color deepens; at the same time, in the actual processing process, the clay has a short service life and a large amount, and the clay after deactivation cannot be regenerated, generally 2~ New white clay needs to be replaced within 3 months. Frequent replacement increases the loss of aromatics and workload, and a large amount of waste white clay needs to be buried.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The non-hydrocatalytic refining test of reformed aromatic oil was carried out on a 10ml evaluation device to investigate the catalytic refining ability at different reaction temperatures. The catalyst was prepared by extruding, drying and roasting kaolin, bauxite and β-type molecular sieve (the same below). Using reformed heavy aromatic oil, distillation range 149~221℃, bromine index is 548.63mgBr / 100ml, aromatic content is 94.18%, colloid is 78mg / 100ml, colloid detection method is GB / T888019 (the same below), reaction conditions are :Reaction pressure 1.0Mpa, reaction space velocity is 25hr -1 , The test results are shown in Table 1. The results are shown in Table 1.

[0013] Reaction temperature, ℃

Embodiment 2

[0015] The non-hydrogen catalytic refining test of aromatic oil was carried out on a 10ml evaluation device to investigate the catalytic refining capacity under different reaction pressures. The feedstock oil was heavy aromatics in the reformer, the distillation range was 149-221°C, the bromine index was 548.63mgBr / 100ml, and the reaction conditions It is: reaction temperature is 160℃, reaction space velocity is 25hr -1 , The test results are shown in Table 2.

[0016] Reaction pressure, MPa

Embodiment 3

[0018] The non-hydrocatalytic refining test of aromatic oil was carried out on a 10ml evaluation device to investigate the catalytic refining capacity under different reaction space velocities. The feedstock oil was heavy aromatics in the reformer, the distillation range was 149-221°C, and the bromine index was 548.63mgBr / 100ml oil. The reaction conditions are: reaction temperature is 180°C, reaction pressure is 1.0Mpa, and the test results are shown in Table 3.

[0019] Airspeed hr -1

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Abstract

A process for catalytically refining the reformed arylhydrocarbon oil in the condition of non-hydrogenation is disclosed. The refining reaction takes place at 100-300 deg.C and 0.5-40 / hr under 1-2 MPa for removing micro-olefin from arylhydrocarbon. The process can increase arylhydrocarbon and reuse catalyst.

Description

1. Technical field [0001] The invention relates to a refining method for reformed aromatic oil. 2. Background technology [0002] The oil produced by the catalytic reforming reaction of naphtha is rich in aromatic hydrocarbons and mineral spirits, and also contains a small amount of olefins. For the reformer that produces aromatic hydrocarbons and mineral spirits, to produce qualified aromatic hydrocarbons and mineral spirits, they all face the problem of how to remove the olefins in the produced oil. At present, there are two methods for industrial removal of olefins in aromatic oils. One is the hydrorefining process, which uses platinum or palladium supported on alumina as a catalyst, and carries out a "post-hydrogenation" process behind the reforming reactor to saturate olefins and achieve the purpose of removing olefins. Typical catalysts There are CN85100760A, CN85100215A, CN1448474A patent reports, and the MH-508 precious metal catalyst developed by Shanxi Coal is currently...

Claims

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Application Information

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IPC IPC(8): C10G35/06
Inventor 曹炳铖施力
Owner 曹炳铖
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