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Hydrocarbon fuel gas utilization method

A technology for hydrocarbon fuel and alkyne, which is applied in the field of utilization of hydrocarbon fuel gas, can solve the problems of ineffective utilization and burning, and achieves improved operability and safety, good combinability and good technical effect. Effect

Inactive Publication Date: 2018-04-24
潜江市大虾风范水产品养殖有限公司
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Problems solved by technology

[0003] The technical problem solved by the present invention is the problem that the hydrocarbon fuel gas rich in alkynes in the existing butadiene plant is sent to the torch for burning and cannot be effectively utilized, and a new utilization method of hydrocarbon fuel gas is provided

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Embodiment Construction

[0010] according to figure 1 Shown, adopt technological process of the present invention, feed is the hydrocarbon material that is rich in alkynes, and one section selective hydrogenation reactor adopts nickel-palladium-copper polymetallic catalyst; Reaction temperature is 45 ℃, and reaction pressure is 2.0MPa, hydrocarbon The volume space velocity of similar materials is 2.5 hours-1, the molar ratio of hydrogen to alkyne is 1.5:1, and the first-stage hydrogenation reactor is a bubbling bed. The two-stage selective hydrogenation reactor adopts a nickel-molybdenum polymetallic catalyst; the reaction temperature is 160°C, the reaction pressure is 2.5MPa, the hydrocarbon material volume space velocity is 1 hour-1, and the mol ratio of hydrogen and alkynes is 450:1, The second-stage hydrogenation reactor is a fixed bed.

[0011] according to figure 1 Shown, adopt technical process of the present invention, feed is the hydrocarbon material that is rich in alkynes, and one section...

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Abstract

The invention relates to a hydrocarbon fuel gas utilization method, mainly solves the problem that hydrocarbon fuel gas rich in alkyne in a butadiene device is sent to a torch to be burned and cannotbe effectively used. According to the method, vapor phase hydrocarbon fuel gas is absorbed by a solvent to form a liquid phase, the absorption liquid and hydrogen gas are mixed, the formed mixture issent into a first-stage catalytic selective hydrogenation reactor, an alkyne selective hydrogenation reaction is carried out under action of a nickel palladium copper silver multi-metal catalyst so that an alkyne is hydrogenated to form a diolefin, the product enters into a desorption tower, then a solvent and C4 olefins are separated, and the tower bottom material is returned to an absorption tower for recycling, the tower top material and hydrogen are mixed, the formed mixture is sent into a second-stage catalytic hydrogenation reactor, the diolefin is hydrogenated to form a monoolefin underaction of a nickel-molybdenum metal catalyst, and the monoolefin is sent to a 1-butene device for separation, so that a 1-butene product is obtained. The technical scheme well solves the problem, andthe method can be widely applied to recovery of hydrocarbon fuel gas and industrial yield-increasing production of 1-butene.

Description

technical field [0001] The invention relates to a method for utilizing residual hydrocarbon fuel gas in a butadiene extraction device, in particular to a method for utilizing hydrocarbon fuel gas. Background technique [0002] Butene-1 is an important chemical raw material with relatively active chemical properties. It is an important component of C4 in refineries and C4 hydrocarbons in cracking. High-purity butene-1 is mainly used for copolymerization of linear low-density polyethylene (LLDPE) monomer, poly-1-butene plastic, and high-density polyethylene (HDPE). From the perspective of Asia, butene-1, one of the raw materials for LLDPE production, is seriously in short supply. There are only a few butene-1 producers in Asia that sell products to the outside world. With the rapid growth of demand from existing LLDPE producers, the demand for butene-1 will become stronger. Contents of the invention [0003] The technical problem solved by the present invention is the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/08C07C11/08C07C11/167C07C5/09
CPCC07C5/08C07C5/09C07C11/08C07C11/167
Inventor 毛德珍
Owner 潜江市大虾风范水产品养殖有限公司
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