Vertical type angular-tube type bubbling bed boiler

Abstract

The invention discloses a vertical type angular-tube type bubbling bed boiler comprising a boiler bottom support seat formed by a plurality of lower collecting boxes and middle connecting tubes. A boiler body defined by a film-type water cooling wall is placed on the boiler bottom support seat, and a steam drum is arranged above the boiler body and supported by falling tubes arranged outside the boiler body. The upper ends of the falling tubes communicate with the steam drum, and the lower ends of the falling tubes communicate with the lower connecting boxes. The lower connecting boxes communicate with an upper connecting box through the film-type water cooling wall, and the upper connecting box communicates with the steam drum. A partition plate is arranged in the boiler body, the film-type water cooling wall of a front cavity is provided with a feeding port, and the film-type water cooling wall of the bottom of the front cavity is provided with a plurality of air inlets. A superheater and an evaporator are arranged in a rear cavity, the superheater communicates with the steam drum, and the evaporator communicates with the film-type water cooling wall of the rear side of the rearcavity. The film-type water cooling wall of the rear cavity is provided with a smoke outlet communicating with an economizer of the exterior of the boiler body, and the economizer communicates with the steam drum. The vertical type angular-tube type bubbling bed boiler has the advantages that the combustion efficiency is high, and the occupied area is small.

Description

technical field [0001] The invention relates to the technical field of sugar energy recovery, in particular to a vertical corner tube bubbling bed boiler. Background technique [0002] With the continuous improvement of sugar production in the sugar industry, the total amount of bagasse produced by the sugar industry is huge. Since bagasse is not easy to store, it is currently burned by chain grate boilers and absorbs the heat of combustion to produce waste. Utilized saturated steam. The structure of the currently used chain grate boiler is: a boiler body made of refractory bricks, a partition wall is arranged inside the boiler body, the lower end of the partition wall is sealed and connected with the rear wall of the boiler body, and the upper end of the partition wall is connected with the boiler body. There is a smoke passage between the top of the body, and the partition wall separates the interior of the boiler body into a front chamber and a rear chamber that are only...

AI Technical Summary

Problems solved by technology

The chain grate boiler currently used has the following disadvantages: (1) The existence of the chain grate in the chain grate boiler leads to a large overall floor area of ​​the chain grate boiler; (2) When the bagasse is burned in the chain grate boiler, The combustion speed is slow and the combustion efficiency is low; (3) The steam drum of the chain grate boiler is fixed by a steel frame, which consumes a lot of steel and the cost of the enterprise is high; (4) The heat recovery efficiency of the chain grate boiler is poor, and it produces The saturated steam cannot be applied to the steam turbine

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