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Recovery method of hydrocarbon fuel gas rich in alkyne

A technology for hydrocarbon fuel and recovery method, which is applied in the fields of hydrogenation to hydrocarbons, organic chemistry, etc., can solve the problems of burning off and cannot be effectively utilized, so as to improve the overall benefit, avoid the loss of butadiene hydrogenation, and avoid the waste of resources. and environmental pollution

Active Publication Date: 2015-06-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem that the hydrocarbon fuel gas rich in alkyne in the existing butadiene plant is sent to the torch for burning and cannot be effectively utilized, and a new hydrocarbon fuel gas rich in alkyne is provided Recovery method of fuel gas

Method used

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  • Recovery method of hydrocarbon fuel gas rich in alkyne
  • Recovery method of hydrocarbon fuel gas rich in alkyne

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] according to figure 1 Shown, adopt technological process of the present invention, feed is the hydrocarbon material that is rich in alkynes, adopts nickel-palladium-copper polymetallic catalyst, and its content is nickel 10wt%, palladium 0.3wt%, copper 1.1wt%; Reaction temperature is 40 ℃, the reaction pressure is 1.5MPa, and the volume space velocity of hydrocarbon material is 2.5 hours -1 , the molar ratio of hydrogen and alkyne is 1.2:1~3:1, the hydrogenation reactor is a bubbling bed, the test proves that the conversion rate of alkyne is about 98.6%, and the yield of butadiene is 189%. The composition of incoming and outgoing materials is shown in Table 3 below:

[0029] Table 3 Composition of materials before and after reaction

[0030] wt%

Embodiment 2

[0032] according to figure 1 As shown, the process flow of the present invention is adopted, the feed is a hydrocarbon material rich in alkynes, and a nickel-palladium-copper-silver multimetal catalyst is used, and its content is 10wt% of nickel, 0.3wt% of palladium, 1.1wt% of copper, and 0.2wt% of silver %; The reaction temperature is 65°C, the reaction pressure is 1.8MPa, and the volume space velocity of hydrocarbon material is 3 hours -1 , the molar ratio of hydrogen and alkyne is 1.2:1~3:1, the hydrogenation reactor is a bubbling bed, the test proves that the conversion rate of alkyne is about 99%, and the yield of butadiene is 205%. The composition of incoming and outgoing materials is shown in Table 4 below:

[0033] Material composition before and after table 4 reaction

[0034] wt%

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Abstract

The invention relates to a method for recovering and utilizing hydrocarbon fuel gas rich in alkyne by catalytic hydrogenation and mainly solves the problem that alkyne-enriched hydrocarbon fuel gas in a butadiene device is sent to a torch to be burned and fails to be effectively utilized. Gaseous hydrocarbon fuel gas is absorbed by solvent into liquid, absorbed liquid is mixed with hydrogen to enter a catalytic selective hydrogenation reactor, and alkyne selective hydrogenation is allowed under the catalytic action of nickel, copper, silver and palladium, catalytic hydrogenation product cools and enters a stripper, and alkyne-enriched mixture is obtained from the top of the stripper and is sent into the butadiene device to obtain the high-purity butadiene product. Bottom residue is mainly solvent and is sent to an absorption tower for recovery. The problem that the fuel gas in the butadiene device fails to be effectively utilized is solved well by the application of the technical scheme. The recovery method is widely applicable to industrial productions to achieve hydrocarbon fuel gas recovery and butadiene yield increasing.

Description

technical field [0001] The invention relates to a method for recovering alkyne-rich hydrocarbon fuel gas. Background technique [0002] Butadiene is an important petrochemical basic organic raw material and synthetic rubber monomer. It is one of the most important components in the C4 fraction, and its position in petrochemical olefin raw materials is second only to ethylene and propylene. Because its molecule contains conjugated diene, reactions such as substitution, addition, cyclization, and polymerization can occur, making it widely used in synthetic rubber and organic synthesis. It can synthesize butadiene rubber (BR), styrene-butadiene Rubber (SBR), nitrile rubber, styrene-butadiene-styrene elastomer (SBS), acrylonitrile-butadiene-styrene (ABS) resin and other rubber products, in addition, it can also be used to produce hexadiene Nitrile, hexamethylenediamine, nylon 66, 1,4-butanediol and other organic chemical products, as well as adhesives, gasoline additives, etc.,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/167C07C5/09
Inventor 卢和泮钱宏义刘仲能
Owner CHINA PETROLEUM & CHEM CORP
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