阅读说明：本技术 一种汽冷分离器结构 (Steam-cooling separator structure ) 是由 黄磊 孙晶晶 杨巍 冯爽 于 2019-12-20 设计创作，主要内容包括：本发明涉及循环流化床生物质锅炉技术领域,具体为一种汽冷分离器结构,其能够有效解决结焦问题,其包括上环形集箱和下环形集箱,所述上环形集箱和所述下环形集箱之间通过呈环形布置的分离器管子连接,其特征在于,部分所述分离器管子下端与所述下环形集箱内侧相连,剩余所述分离器管子下端与所述下环形集箱上端相连。(The invention relates to the technical field of circulating fluidized bed biomass boilers, in particular to a steam-cooled separator structure which can effectively solve the coking problem and comprises an upper annular collecting tank and a lower annular collecting tank, wherein the upper annular collecting tank is connected with the lower annular collecting tank through separator pipes which are annularly arranged.)

1. A steam-cooling separator structure comprises an upper annular header and a lower annular header, wherein the upper annular header and the lower annular header are connected through separator tubes which are annularly arranged, and the steam-cooling separator structure is characterized in that the lower ends of part of the separator tubes are connected with the inner side of the lower annular header, and the lower ends of the rest of the separator tubes are connected with the upper end of the lower annular header.

2. A steam-cooled separator arrangement according to claim 1, wherein the separator tubes comprise first and second separator tubes arranged in spaced apart relation, the first separator tube comprising a first upper vertical section and a lower inclined section, the second separator tube comprising a second upper vertical section, a middle inclined section, a lower vertical section, the first upper vertical section and the second upper vertical section are in height correspondence and form a cylinder, the first upper vertical section and the second upper vertical section are connected with the upper annular header through an upper bent pipe, the lower inclined section is enclosed into an inverted cone, the bottom of the lower inclined section is connected with the inner side of the lower annular header through a horizontal pipe, the inner side surface of the lower inclined section forms an inverted cone-shaped ash falling channel through a pouring material, the middle inclined section corresponds to the upper part of the lower inclined section, and the bottom of the lower vertical section is connected with the upper end of the lower annular header.

3. A vapor-cooled separator structure according to claim 1, wherein said first separator tubes are arranged one apart from said second separator tubes.

Technical Field

The invention relates to the technical field of circulating fluidized bed biomass boilers, in particular to a steam-cooling separator structure.

Background

With the increasingly strict national requirements on pollutant emission and the gradually increasing demand of power station boilers and industrial boilers on clean energy technology, the circulating fluidized bed combustion technology has attracted more and more attention as an advanced clean and efficient combustion utilization technology of low-grade fuel, and has been rapidly developed in recent years.

The separator is an important component of the circulating fluidized bed boiler, and the form and arrangement of the separator greatly influence the performance of the boiler. The traditional steam-cooling separator is generally provided with an upper annular header and a lower annular header, wherein annular uniformly distributed pipes are arranged between the upper annular header and the lower annular header, the upper parts of the pipes are vertical sections, the middle parts of the pipes are inclined inwards, the pipes are integrally funnel-shaped, and the bottom parts of the pipes are vertical sections connected with the upper parts of the lower annular headers, as shown in fig. 1 and 2. A dust deposition position is arranged at the joint of the separator castable and the ash chute castable, so that the phenomena of dust deposition and coking are easy to occur.

Disclosure of Invention

In order to solve the problem that the existing steam-cooled separator is easy to coke, the invention provides a steam-cooled separator structure which can effectively solve the problem of coking.

The technical scheme is as follows: a steam-cooling separator structure comprises an upper annular header and a lower annular header, wherein the upper annular header and the lower annular header are connected through separator tubes which are annularly arranged, and the steam-cooling separator structure is characterized in that the lower ends of part of the separator tubes are connected with the inner side of the lower annular header, and the lower ends of the rest of the separator tubes are connected with the upper end of the lower annular header.

The separator tube comprises a first separator tube and a second separator tube which are arranged at intervals, the first separator tube comprises a first upper vertical section and a lower inclined section, the second separator tube comprises a second upper vertical section, a middle inclined section and a lower vertical section, the height of the first upper vertical section corresponds to that of the second upper vertical section and surrounds a cylinder, the first upper vertical section and the second upper vertical section are connected with the upper annular header through an upper bent pipe, the lower inclined section surrounds an inverted cone, the bottom of the lower inclined section is connected with the inner side of the lower annular header through a horizontal pipe, the inner side surface of the lower inclined section forms an inverted cone-shaped ash falling channel through a pouring material, the middle inclined section corresponds to the upper part of the lower inclined section, and the bottom of the straight section is connected with the upper end of the lower annular header.

The first separator tube and the second separator tube are arranged one at a distance from each other.

After the invention is adopted, the inner wall of the ash falling channel is changed into an inclined plane, no bending exists, ash can be smoothly fallen, the phenomenon of ash deposition and coking can not occur, the separator pipe is divided into two parts which are respectively connected with the inner side and the upper end of the lower annular collecting box, the excessive holes on the inner side of the lower annular collecting box are avoided, and the stability of the structure is ensured.

Drawings

FIG. 1 is a schematic diagram of coking in a conventional ash chute;

FIG. 2 is a schematic view of a prior art external separator tube distribution;

FIG. 3 is a schematic view of the interior of the ash chute of the present invention

FIG. 4 is a schematic view of the external separator tube distribution of the present invention;

FIG. 5 is a schematic view of a first separator tube;

FIG. 6 is a schematic view of a second separator tube.

Detailed Description

Referring to fig. 3, 4, 5 and 6, a steam-cooling separator structure comprises an upper annular header 1 and a lower annular header 2, wherein the upper annular header 1 and the lower annular header 2 are connected through an annular separator tube 3, the upper parts of the adjacent separator tubes 3 are connected through a flat steel, the separator tube 3 comprises a first separator tube 4 and a second separator tube 5 which are arranged at intervals, the first separator tube 4 comprises a first upper vertical section 4-1 and a lower inclined section 4-2, the second separator tube 5 comprises a second upper vertical section 5-1, a middle inclined section 5-2 and a lower vertical section 5-3, the first upper vertical section 4-1 is in a cylindrical shape and corresponds to the second upper vertical section 5-1 in height, the first upper vertical section 4-1 and the second upper vertical section 5-1 are connected to the upper annular header 2 through an upper elbow 8, the lower inclined section 4-2 is enclosed into an inverted cone, the bottom of the lower inclined section is connected with the inner side of the lower annular collecting box 2 through a horizontal pipe 9, the inner side surface of the lower inclined section 5-2 forms an inverted cone-shaped ash falling channel 7 through a pouring material 6, the diameter of the lower end of the ash falling channel 7 is smaller than the inner diameter of the lower annular collecting box, ash deposition cannot be formed, the middle inclined section 5-2 corresponds to the upper part of the lower inclined section 4-2, and the bottom of the lower vertical section 5-3 is connected with the upper end of the lower annular collecting box 2.

The separator is an important component of the circulating fluidized bed boiler, two steam-cooled cyclone separators are arranged at the outlet of a hearth, a membrane wall consisting of pipes and fins is used as the shell of the cyclone separator, and the cyclone separator with a unique structure is formed by adopting a mode of a volute inlet. Has the advantages of high separation efficiency and intensified combustion. The cyclone separates the material which is carried away from the hearth by the flue gas. And the flue gas returns to the hearth through the material returning port, and flows to the tail convection heating surface. The working temperature of the whole material separation and return loop is about 890 ℃.