Smoke dust separating device suitable for skid-mounted type steam-injection boiler burning residual oil

Abstract

A smoke dust separating device suitable for a skid-mounted type steam-injection boiler burning residual oil comprises a gradually-contracting type horizontal transition section communicated with a radiation section and a vertical type cyclone separator, wherein the vertical type cyclone separator is arranged in a vertical transition section which is below a convection section and communicated with the gradually-contracting type horizontal transition section, a coil pipe is arranged in the vertical type cyclone separator, a coil pipe inlet pipeline arranged at the lower end of the coil pipe is communicated with an outlet of a convection bank, a coil pipe outlet pipeline arranged at the upper end of the coil pipe is communicated with an inlet of a water-water heat exchanger, a standpipe is installed on the top of the vertical type cyclone separator, and an ash bucket is installed at the bottom of the vertical type cyclone separator. According to the smoke dust separating device suitable for the skid-mounted type steam-injection boiler burning the residual oil, the horizontal transition section is gradually-contracting, smoke in the radiation section are accelerated, the smoke enters the vertical type cyclone separator at a higher speed, the smoke after being separated is discharged from the standpipe and enters the convection bank, and dust which is separated is stored in the ash bucket temporarily. The valve of a dust discharging pipeline is opened at regular intervals, and therefore the dust in the ash bucket is discharged out of the boiler. The flying ash concentration of the smoke in the convection section is effectively reduced, slag and dust deposition in the convection bank are relieved, and normal heat exchange of the convection bank is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of a residue-burning skid-type steam injection boiler, in particular to a smoke and dust separation device suitable for a residue-burning skid-type steam injection boiler. Background technique [0002] The steam injection boiler is currently an important auxiliary equipment for the exploitation of heavy oil at home and abroad. The high temperature and high pressure saturated steam produced by the boiler is injected into the oil well to increase the temperature of the oil layer, reduce the viscosity of the heavy oil, and increase the oil layer pressure, making the heavy oil easier to exploit. The oil field steam injection boiler is composed of burner, plunger pump, radiant section, transition section, convection section, water-water heat exchanger and connecting pipelines. Due to the increasing amount of crude oil required by life and industry, and the increasing price of crude oil, steam injection boilers general...

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Problems solved by technology

After the boiler has been in operation for a long time, the cohesive ash accumulation in the convection section will reduce the output and thermal efficiency of the boiler, affecting the normal operation of the boiler

The furnace has to be shut down frequently for manual ash removal, and it is difficult to clean up the ash accumulation due to the dense arrangement of convection tube bundles

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