Device and method for processing butane

A butane and dehydrogenation technology, applied in the field of butane processing, can solve problems such as difficult distillation and separation of hydrocarbons, high operating costs, and difficulty in selecting selective solvents

Active Publication Date: 2018-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the boiling point of some hydrocarbons in the butane dehydrogenation product is low, and the volatility of each component in the butane dehydrogenation product is very close, which makes the rectification separation of hydrocarbons difficult, and higher operating costs
Although appropriate solvents can be selected for extraction and separation according to the solubility of C4 hydrocarbons in different media, but for hydrocarbon mixtures with complex content, select the solvent with good selectivity, high solubility, stable properties, low toxicity, Solvents with low corrosion and low boiling point requirements are more difficult

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  • Device and method for processing butane

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preparation example Construction

[0033] In step (i) of the method for preparing a dehydrogenation catalyst in the present invention, the active component precursor is a compound that can form an active component in the final prepared dehydrogenation catalyst, for example, the active component precursor can preferably be At least one of ammonium hexachloroplatinate, ammonium tetrachloroplatinate and chloroplatinic acid. The precursor containing at least one of tin, bismuth and boron is a compound capable of forming at least one of tin, bismuth and boron in the final prepared dehydrogenation catalyst, for example, the precursor containing at least one of tin, bismuth and boron The precursor of at least one of can be nitrate, chlorite, nitrate, carbonate, chloride, phosphate, sulfate, acetate, fluoride, hydroxide of tin, bismuth or boron, Or an acid or base containing tin, bismuth or boron, preferably bismuth nitrate or stannous chloride. Further, the impregnation carried out in step (i) can be carried out step...

Embodiment 1

[0108] This example illustrates the butane processing method of the present invention.

[0109] (1) Immerse 60g of γ-alumina (Shandong Aluminum) in 0.03mol / L chloroplatinic acid (Sinopharm Chemical Reagent Co., Ltd.) and 0.1mol / L bismuth nitrate (Beijing Zhonglian Chemical Industry Co., Ltd.) at 75 °C (provided by the factory) for a total of 0.5 h, wherein the volume of the solution was measured according to the mass content of Pt and Bi; then the impregnated product was dried by rotary evaporation at 75 °C for 0.5 h, and then the dried product was placed in a muffle furnace , roasted in an air atmosphere at 450°C for 3h, and the roasted product was then immersed in a 0.25mol / L tin protochloride (Tianjin Guangfu Fine Chemical Research Institute) aqueous solution, wherein the volume of the solution was measured according to the Sn mass content; then in After drying by rotary evaporation at 75° C. for 0.5 h, it was further calcined in an air atmosphere at 450° C. for 3 h to obta...

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Abstract

The invention relates to the processing field of butane and discloses a device and a method for processing butane. The method comprises the following steps: (1) carrying out dehydrogenation reaction on butane, so as to obtain a dehydrogenation product; (2) enabling the dehydrogenation product to be in contact with maleic anhydride, wherein C4 terminal olefin in the dehydrogenation product generates copolymerization with maleic anhydride; (3) carrying out gas-liquid separation on a product obtained in the step (2), so as to obtain a gas-phase product and a liquid-solid mixture; (4) carrying outgas-phase separation on the gas-phase product obtained in the step (3), so as to obtain a C4 fraction, and adding butane obtained through hydrogenation reaction as a circulating material into dehydrogenation reaction in the step (1); and (5) separating the liquid-solid mixture obtained in the step (3), so as to obtain a solid product, namely a polymer containing maleic anhydride functional groups. According to the method, the processing and utilization of butane and the coproduction of the polymer containing the maleic anhydride functional groups can be realized, and butane can be taken as araw material of functional materials.

Description

technical field [0001] The invention relates to the field of butane processing, in particular to a method and device for processing butane. Background technique [0002] Butane, as one of the products of industrial production of C4 hydrocarbons, is currently mainly used as fuel, and its economic value is too low. However, if it is converted to carbon four olefins, especially 2-butene, it can be used as a raw material for other synthetic reactions, and has a broader application prospect. [0003] Alkenes can be obtained by catalytic dehydrogenation of alkanes. For example, the dehydrogenation technologies of propane and isobutane that have been industrialized in the world at present mainly include the Oleflex process of UOP Company, the Star process of Phillips Company, the Catofin process of AirProduct&Chemical Company, the FDB-4 of Snamprogetti SPA Company and the Linde process of Linde Company Wait. [0004] However, the product of alkane dehydrogenation is a mixture, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/06C08F210/10C08F210/08C08F236/06C08F2/01C07C5/333C07C11/08C07C11/09C07C11/167
CPCC07C5/3337C07C2523/42C08F2/01C08F222/06C08F210/10C08F210/08C08F236/06C07C11/08C07C11/09C07C11/167
Inventor 金立宋文波杜志国刘振杰王国清乔金樑
Owner CHINA PETROLEUM & CHEM CORP
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