Process and apparatus for producing ethine from gaseous hydrocarbon
A technology of gaseous hydrocarbons and acetylene, which is applied in the condensation hydrocarbon production with dehydrogenated hydrocarbons, organic chemistry, etc., and can solve the problems of large processing capacity, low energy utilization rate, and difficult operation
Active Publication Date: 2013-03-20
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
In addition, it is difficult to increase the processing capacity of this kind of reactor, the adjustment range is small, the energy utilization rate is low, the gas pressure drop is large, there is a greater risk of explosion, and the operation is difficult and demanding.
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[0009] The present invention is described in detail below in conjunction with accompanying drawing: a kind of process and equipment for producing acetylene from gaseous hydrocarbon, after gaseous hydrocarbon and oxygen are mixed by the ratio of 1: 0.4-0.65, pass through the top nozzle (3) and the side of Y type pyrolysis furnace The nozzle (4) is sprayed into the reaction chamber (5) to undergo combustion and pyrolysis. The reaction temperature is 1300-1500°C. The Y-shaped flame torches collide with each other to stabilize the flame, forming a stable and uniform temperature field, and the gaseous hydrocarbons are instantly cracked into acetylene; Quenching water or oil is sprayed into the quenching section (7) in curtain form through the quenching nozzle (6) to quench the reaction gas and preserve acetylene to the greatest extent; the reaction gas and quenching liquid quenched to below 100°C pass through the quenching gas-liquid outlet (9 ) is ejected, and the gas-liquid is sep...
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The invention relates to a technique for preparing acetylene with gaseous hydrocarbon and a device thereof. Gaseous hydrocarbon and oxygen are mixed according to the proportion of 1:0.4 to 0.65; the mixture is injected into a reaction chamber through the top nozzle and the side nozzle of a Y-shaped pyrolyzing furnace for combustion pyrolysis, the reaction temperature is between 1,300 DEG C and 1,500 DEG C and gaseous hydrocarbon cracks into acetylene instantaneously; quench water or oil is injected into a quench zone tentiformly through a quench nozzle at the middle of the Y-shaped pyrolyzing furnace to quench the reaction gas; the reaction gas quenched below 100 DEG C and quench liquid are injected out from a quench liquid outlet and gas and liquid are separated due to inertia; the quench liquid is discharged from the quench liquid outlet and can be recycled after heat exchange; quenched reaction gas containing about 8 percent of diluted acetylene is discharged from a reaction gas outlet and acetylene products can be obtained through absorption, separation and purification.
Description
1. Technical field [0001] The invention relates to a process and equipment for producing acetylene from gaseous hydrocarbons, belonging to the field of petrochemical industry. 2. Background technology [0002] Oxidative pyrolysis of methane-rich gaseous hydrocarbons such as natural gas, coal bed methane, refinery dry gas, and oilfield associated gas to produce acetylene is currently the main acetylene production process other than the calcium carbide method. Oxygen enters the multi-tube burner plate acetylene furnace. At 1500°C, methane is cracked to produce about 8% dilute acetylene, and then concentrated with N-methylpyrrolidone to produce 99% acetylene product. The reactor is a single-tube or multi-tube burner plate acetylene furnace with radial downspray. The pyrolysis reaction of methane in this reactor is mainly carried out in the combustion flame. Since the temperature field of the flame torch is a high-gradient temperature field, there are situations of insufficient...
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IPC IPC(8): C07C11/24C07C2/82
Inventor 田原宇乔英云盖希坤
Owner SHANDONG UNIV OF SCI & TECH