CN2370277Y

CN2370277Y - Burning device for bubble fluidized bed

Info

Publication number: CN2370277Y
Application number: CN 99201923
Authority: CN
Inventors: 牛喜华; 李宝成; 孙慧敏; 赵广播; 高嵩
Original assignee: 牛玉轩
Priority date: 1999-01-06
Filing date: 1999-01-06
Publication date: 2000-03-22
Anticipated expiration: 2009-01-06

Abstract

The utility model relates to a burning device for bubble fluidized bed, which is particularly suitable for matching with the existing various industrial furnaces, comprising a furnace wall which is formed into a furnace chamber and is provided with a furnace door and a flue opening. An oil inlet pipe, a secondary air pipe, a feed inlet, and a circulating water ring pipe buried at the inner side are arranged on the furnace wall, and the lower part of the furnace wall is horizontally provided with an air distribution plate which is connected with an air blowing room at the lower part and is provided with an air cap at the upper part. A river sand layer covering the air cap is arranged at the upper surface of the air distribution plate. The utility model is conveniently matched with the existing various industrial furnaces, has low requirement to the suitable condition of the fuel, and has the advantage of high combustion efficiency, and effectively improves the continuous usage time and the service life of the furnace.

Description

Bubble fluidised bed combustion device

The utility model relates to combustion apparatus, is a kind of bubble fluidised bed combustion device that is specially adapted to existing all types of industries boiler configuration use.

The existing boiler that is used for industries such as industry, petrochemical industry generally is to arrange circulating water pipe in the combustion chamber, and configuration coal-burning installation or atomizing oil jetting combustion device and constituting.The problem one of its existence is that the fuel burn-off rate is low, concentration of narmful substance height in the discharging flue gas; The 2nd, burner hearth coking and fouling of heating surface are serious, shorten the continuous service time of boiler; The 3rd, to fuel applicable elements requirement height, the use that can not act as a fuel of general colm and poor oil.

The purpose of this utility model is at the problems referred to above, can be easily uses, and boiler reduced greatly and its efficiency of combustion and the bubble fluidised bed combustion device that improves greatly service time continuously to the applicable elements of fuel with existing all kinds of boilers configurations and provide a kind of.

The technical scheme that realizes above-mentioned purpose is: a kind of bubble fluidised bed combustion device includes furnace wall, is arranged at the fire door of furnace wall front and is arranged at the floss hole of furnace wall back; Be provided with the air distribution plate of a horizontal in the bottom of furnace wall, below air distribution plate, be provided with the plenum chamber that joins with pressure fan, on air distribution plate, be densely covered with top side to the perpendicular river layer of sand of putting blast cap and covering blast cap of offering the wind hole; On furnace wall, be provided with the recirculated water endless tube that is embedded in the body of wall inboard, oil inlet pipe, secondary air channel and the charge door in the connection furnace chamber; The perpendicular downward residue outlet of putting is installed on air distribution plate.

When this burner uses, the bottom high-pressure blast is sent into the combustion chamber through plenum chamber, blast cap, and make the river sand cover layer of thermophore in the middle of the conduct of heating form the red-hot boiling bed of material at boiling section, as pitch prill Jiao after preheating, super viscous crude, when the emulsification wet goods flows into the red-hot bed of material, water evaporates, separate out combustible-fugitive constituent, its carbon residue also will burn to after-flame with fugitive constituent in the red-hot bed of material about 1000 ℃.Wind is rotated in the overfiren air port ejection of arranging on top, combustion chamber at a high speed, air-flow to its rising fully stirs, mixes, make further after-flame of wherein unburnt combustible (mainly being gaseous state), thereby obtain high efficiency of combustion, the harmful substance in the flue gas of airborne release is reduced greatly.

This device can use separately, but is particularly suitable for the oil burning boiler as existing Industrial Boiler, petrochemical heating furnace, oil field, the equipment of setting up of injection boiler.When configuration, its floss hole is connected the furnace chamber of original equipment, and circulating water pipe is connected the heat pipe of original equipment, because its dual-heated effect can make the existing equipment increase exert oneself about 50%.And, improved the continuous service time of boiler greatly owing to avoided the burner hearth coking and alleviated the dust stratification of heating surface.

Because this burner special construction design, can use colm, coal drystone act as a fuel (need not arrange river sand cover layer this moment) as middle thermophore.Also the liquid fuels such as organic chemistry sewage of incendivity paper mill black liquor, pharmaceutical factory are realized twice laid, solve environmental issue.

Accompanying drawing is this bubble fluidised bed combustion device structural representation.

The utility model is described in further detail below in conjunction with drawings and Examples:

Provide as accompanying drawing, this burner has the furnace wall 1 that surrounds furnace chamber, should adopt built-in refractory brick material peripheral hardware box hat structure, various ways such as that the profile of its body of heater can be designed to as requested is round, oval, rectangular, pros.Be provided with the fire door 6 that is used to operate below leaning in the front of furnace wall, be provided with above leaning in the back of furnace wall and be used to discharge fume or with the former floss hole 12 that joins fully that installs.Air distribution plate 9 horizontal are in the bottom of furnace wall, are connected to plenum chamber 11 below its air distribution plate, and the other end of this plenum chamber disposes pressure fan, the perpendicular blast cap of putting 7 that on air distribution plate, gathers, and the top of this blast cap offers the wind hole of side direction.River layer of sand 8 is arranged on above the air distribution plate, and blast cap is covered in its layer of sand.Recirculated water endless tube 3 is embedded in furnace wall body inboard, and two pipe ends lead to outside the furnace wall.Oil inlet pipe 5 and secondary air channel 4 all are communicated with furnace chamber, and according to designing requirement several are set and are periphery in the furnace wall side.Above furnace wall leans on, be provided with charge door 2, add the perpendicular downward residue outlet 10 of putting at the middle part of air distribution plate.

Claims

1, a kind of bubble fluidised bed combustion device, include furnace wall (1), be arranged at the fire door (6) of furnace wall front and be arranged at the floss hole (12) of furnace wall back, it is characterized in that: the air distribution plate (9) that is provided with a horizontal in the bottom of furnace wall (1), below air distribution plate, be provided with the plenum chamber (11) that joins with pressure fan, on air distribution plate, be densely covered with top side to the perpendicular river layer of sand (8) of putting blast cap (7) and covering blast cap of offering the wind hole; On furnace wall (1), be provided with the recirculated water endless tube (3) that is embedded in the body of wall inboard, oil inlet pipe (5), secondary air channel (4) and the charge door (2) in the connection furnace chamber; The perpendicular downward residue outlet (10) of putting is installed on air distribution plate (9).