Skid-mounted type fuel oil supercritical pressure direct-flow gas injection boiler

Abstract

The invention discloses a prying type super-critical pressure concurrent steam injection boiler used for oil field crude oil thermal recovery. The boiler comprises a boiler main body, the boiler main body is divided into a radiation heating surface and a convection heating surface, the water cooling wall of the radiation heating surface adopts a spiral coil wound by adopting a single tube, and is closely fitted with the boiler wall, and a burner is arranged at the center of the boiler wall; a chimney is arranged above the convection heating surface, the convection heating surface is a snake-shaped convection bank wound by adopting a single convection heated tube, and the convection bank is arranged in a staggered way; and the convection heating surface is divided into two parts of an A and a B by a fume dividing duct separating plate; the heating surfaces of the boiler adopt the two stage arrangement of the radiation heating surface and the convection heating surface, the design concept of the fume dividing duct separating plate is adopted, and thereby the cross-section area of the fume flow is reduced, the fume flow speed is quickened, the convection heat transfer coefficient is increased, the heat transmission is strengthened, and on the conditioning of the feed water quality, the combined conditioning of a deaerator, a novel reverse osmosis membrane and an EDI (electrodialysis) separating equipment is adopted.

Description

technical field [0001] The invention belongs to the technical field of boiler manufacturing, and relates to an oilfield high-efficiency thermal recovery system, in particular to a skid-mounted fuel supercritical pressure once-through steam injection boiler. Background technique [0002] The critical state point pressure and temperature of water are 22.115MPa and 374.15°C, respectively. It is generally considered that boilers whose steam parameters exceed the critical state point pressure and temperature values ​​of water are called supercritical boilers. With the increase of steam parameters, the boiler efficiency continues to rise. At present, many scholars at home and abroad are committed to the research and application of supercritical and ultra-supercritical power generation technology. Correspondingly, so far, most supercritical pressure steam boilers are used in thermal power plants. , It is necessary to solve the problems of the working medium flow pulsation in the h...

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Problems solved by technology

[0004] Chinese patent application (application number 200610042957.8) discloses a skid-mounted fuel oil supercritical pressure once-through steam injection boiler. a large number of formed elbows

Although the convection heating surface is arranged in a trapezoidal shape, the flue gas flow rate is still low; the inlet of the working fluid is designed at the rearmost heating surface, which is easy to form low-temperature radiation

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