A thermal recovery boiler with double-layer pipe layout and two-pass radiation section

Abstract

The invention discloses a double-layer pipe laying two-return stroke radiation section thermal recovery boiler which comprises a convection section and a radiation section which are arranged up and down; a transition section communicating with the convection section and the radiation section is arranged on one side of the convection section and on one side of the radiation section; a chimney communicating with the convection section is arranged at the top of the convection section and is located on the opposite side of the transition section; a burner communicating with the radiation section is arranged at the exterior of the radiation section and is located on the opposite side of the transition section; the radiation section adopts a circular section structure; and a radiation section pipe bundle in an annular double-layer two-return stroke structure is arranged in the radiation section. Through innovative design on structures of the thermal recovery boiler, the convection section and the radiation section, the problems that an offshore oil platform thermal recovery boiler is large in flooring area and low in heat exchange efficiency and a pipe explosion hazard exists are solved.

Description

technical field [0001] The invention relates to a boiler, in particular to a thermal recovery boiler with double-layer pipe arrangement and two-pass radiation section. Background technique [0002] At present, thermal recovery boilers are mainly divided into two forms, namely vertical boilers and horizontal boilers. Both boilers are capable of thermal recovery operations. The furnace of the vertical boiler is small, and the radiation section and the convection section are vertical structures. Insufficient atomization is easy to cause coking; the horizontal boiler furnace is placed horizontally, the furnace is long, and the fuel oil can be fully atomized and burned, but the convection section is placed horizontally at the tail of the furnace, which occupies a large area. [0003] There are mainly two types of tube bundle layout methods in the radiant section of thermal recovery boilers, namely straight tube reciprocating type and single tube spiral type. These two kinds of...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a thermal recovery boiler with double-layer pipe layout and two return radiation sections. Through the innovative design of the thermal recovery boiler, convection section, and radiation section structure, it can solve the thermal recovery problem of offshore oil platforms. The boiler occupies a large area, the heat exchange efficiency is low, and there is a problem of tube explosion hazards

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