Coal powder entrance structure applied to reactor for producing acetylene with plasma coal cracking

Abstract

The invention discloses a coal dust inlet structure applied to preparing an acetylene reactor by plasma coal pyrolysis, belonging to the technical field of industrial gas-solid two-phase mixing and reacting efficiently and rapidly. The outlet cross section of the coal dust spray head of the inlet structure is wide and flat; a long axis of the outlet cross section of the coal dust spray head formsa cut angle alpha with the cross section of the reactor channel; the coal dust spray heads are in central symmetrical distribution at the inner wall of the reactor channel; tangent of intersection ofcircumference surface of the cross section of the reactor channel inner wall where the coal dust spray heads are arranged and central line of the coal dust spray head forms an angle beta with the central line of the coal dust spray head; the central line of the coal dust spray head forms a cut angle gamma with the cross section of the reactor channel. The invention provides a coal dust inlet structure applied to preparing the acetylene reactor by plasma coal pyrolysis; by the structure, the coal dust sprayed by the coal dust spray heads can be well mixed with high temperature plasma jet, thereby effectively improving yield of acetylene and lessening coking of the reactor.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency and rapid mixing and reaction of industrial gas-solid two-phase, and particularly relates to a pulverized coal inlet structure applied to a reactor for producing acetylene by plasma coal cracking. Background technique [0002] Acetylene is an important basic organic chemical raw material. The industrial methods for producing acetylene mainly include calcium carbide method, methane partial oxidation method and methane arc cracking method. Among them, the calcium carbide method acetylene process is mature and accounts for an absolute proportion in industrial production, but the pollution and energy consumption are relatively high. Plasma pyrolysis of coal to acetylene is a new and promising route for direct chemical conversion of coal. Since the 1990s, Chinese scholars and engineering technicians have carried out a lot of basic research and engineering research in this field. Because my co...

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Problems solved by technology

Since the research on the production of acetylene by high-power plasma coal cracking is in its infancy, reports on the structure design of its pulverized coal inlet are seldom published in public literature

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