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Method for refining catalytic liquefied petroleum gas

A catalytic liquefaction and petroleum gas technology, applied in the petroleum industry, gas fuel, fuel, etc., can solve problems such as inability to convert, incomplete conversion of mercaptans, and failure to remove carbonyl sulfide

Active Publication Date: 2005-11-30
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in fact, the inventors of this patent application found that the amount of dissolved oxygen in catalytic liquefied petroleum gas is extremely small, generally less than 50ppm, and some even below 0.2ppm, while the content of mercaptans is generally tens to hundreds of ppm , so in the implementation of the above-mentioned method for converting mercaptans, only the residual dissolved oxygen in the catalytic liquefied petroleum gas cannot meet the required oxygen amount for converting mercaptans, so the mercaptans in the catalytic liquefied petroleum gas cannot be completely converted, or even cannot be converted
In addition, in the methods of 00129724.4 and 01134688.4, there is no special step for removing carbonyl sulfide

Method used

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  • Method for refining catalytic liquefied petroleum gas
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  • Method for refining catalytic liquefied petroleum gas

Examples

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manufacture example 1 to manufacture example 3

[0038] A cylindrical double-effect catalyst A1 whose active component is manganese dioxide, and the double-effect catalyst A1 is entirely composed of manganese dioxide. The manufacturing method is as follows: Each manufacturing example takes a certain weight of powdered manganese dioxide respectively, and uses a tablet machine or a tablet press to press the powdered manganese dioxide under corresponding pressure into a cylindrical shape with a certain lateral pressure strength. The solid moldings of the two-way catalyst finished product A11 of production example 1, the double-way catalyst finished product A12 of production example 2 and the double-way catalyst finished product A13 of production example 3 were respectively obtained. The diameters of these finished double-effect catalysts are all 6.5 mm, and the heights are all 6.2 mm to 6.5 mm. See Table 1 for the relevant parameters of the specifications and properties of the catalysts of each manufacturing example. In Manufa...

manufacture example 4 to manufacture example 6

[0040] A cylindrical double-effect catalyst A2 whose active component is manganese carbonate, and the double-effect catalyst A2 is entirely composed of manganese carbonate. The manufacturing method is as follows: Each manufacturing example weighs a certain weight of powdered manganese carbonate respectively, and presses the powdered manganese carbonate under corresponding pressure into a cylindrical solid with a certain lateral pressure strength by using a tablet machine or a tablet press. The finished double-way catalyst A21 of Production Example 4, the finished double-way catalyst A22 of Production Example 5, and the finished double-way catalyst A23 of Production Example 6 were obtained respectively. The diameters of these finished double-effect catalysts are all 6.5 mm, and the heights are all 6.2 mm to 6.5 mm. See Table 1 for the relevant parameters of the specifications and properties of the catalysts of each manufacturing example. In manufacturing example 4 to manufactu...

manufacture example 7 to manufacture example 9

[0042] The active component is a cylindrical double-effect catalyst A3 whose active component is trimanganese tetraoxide, and the double-effect catalyst A3 is entirely composed of trimanganese tetraoxide. The manufacturing method is as follows: Each manufacturing example weighs a certain weight of powdered trimanganese tetroxide, respectively, and presses the powdered trimanganese tetraoxide under corresponding pressure with a tablet machine or a tablet press to form a tablet with a certain lateral pressure strength. Cylindrical solid moldings were used to obtain the finished double-effect catalyst A31 of Production Example 7, the finished double-effect catalyst A32 of Production Example 8, and the finished double-effect catalyst A33 of Production Example 9. The diameters of these finished double-effect catalysts are all 6.5 mm, and the heights are all 6.2 mm to 6.5 mm. See Table 1 for the relevant parameters of the specifications and properties of the catalysts of each manufa...

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Abstract

The present invention relates to a method for refining catalytic liquefied petroleum gas, in which catalyzed liquefied petroleum gas by alconol-amine method removing hydrogen sulfide process is operated by hydrolysis carbonyl sulfur process by passing through carbonyl sulfur hydrolysis activator bed layer, such that carbonyl sulfur hydrolysis generates sulfureted hydrogen and carbon dioxide; then it passes through the desulfurizer bed layer to operate hydrogen sulfide removing process, the preparation of reaction of the hydrogen sulfide and the desulfurizer is chemically absorbed on the desulfurizer; at last, liquid oxygen supplying agent having effective component of tert-butyl hydroperoxide is applied into the catalyzed liquefied petroleum gas, then it is processed by transformation mercaptan by passing through the double effects activator bed layer, under the effect of the double effects activator, the tert-butyl hydroperoxide is hydrogen peroxide decomposed to release fresh state oxygen, and the mercaptan is oxygenated to bisulfide; the activate component of the double effects activator is compound of manganic.

Description

technical field [0001] The invention belongs to the field of refining and processing of liquefied petroleum gas, in particular to a method for removing organic sulfur compounds in catalytic liquefied petroleum gas. Background technique [0002] In the refining of sulfur-containing petroleum, the liquefied petroleum gas obtained by catalytic cracking (hereinafter referred to as catalytic liquefied petroleum gas) contains sulfur compounds such as hydrogen sulfide, carbonyl sulfide and mercaptan, so it is necessary to remove and convert catalytic liquefied petroleum gas Refining of sulfur compounds. When refining catalytic liquefied petroleum gas, the hydrogen sulfide in it is firstly removed by alcohol amine method, and then deodorization treatment is carried out to convert and remove mercaptan and part of carbonyl sulfide contained therein. The alcohol amine solvent used in the dehydrogenation of alcohol amine method is monoethanolamine, diethanolamine, N-methyldiethanolamin...

Claims

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Application Information

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IPC IPC(8): C10L3/12
Inventor 刘振义李瑞秋苏立鹏汪祥胜
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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