CN102012022B

CN102012022B - Pulverized coal jetting and combusting mechanism

Info

Publication number: CN102012022B
Application number: CN201010609671XA
Authority: CN
Inventors: 黄云生
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-29
Filing date: 2010-12-29
Publication date: 2012-11-14
Anticipated expiration: 2030-12-29
Also published as: CN102012022A

Abstract

The invention relates to a pulverized coal jetting and combusting mechanism. The mechanism comprises a combustion room, wherein a heat energy release outlet is reserved at one end of the combustion room; the combustion chamber is cylindrical and is connected with an air inlet pipe and a coal jetting pipe along a tangential direction; an ignition port on the wall, close to one side of the outlet of the coal jetting pipe, of the combustion room; the coal jetting pipe is sleeved in the air inlet pipe; a collision type nozzle is connected at the end of the coal jetting pipe; an ash removal and observation port is reserved in the centre of the side wall of the combustion room on one side of the ignition port; the ash removal port is reserved on one side of the wall; and de-ashing ports in porous distribution are formed on the circumferential wall of the combustion room on one side of the heat energy release outlet. The mechanism overcomes the situations of coal leakage or incomplete combustion of a common coal-combusting grate in the prior art, and causes great resource waste and low economic benefit; water-coal-slurry jetting and combusting technology has the defects of high slurrying and processing cost, low heat efficiency and high combustion cost; and by the design, the mechanism has the advantages of compact structure, thorough pulverized coal combustion, high heat production efficiency and high reliability.

Description

Fine coal torch firing mechanism

Technical field

The present invention relates to a kind of fine coal torch firing mechanism.

Background technology

All coal-burning type boiler burner, annealing furnaces all are that fire coal is placed on the heat production of burning on fire grate or the grid in combustion process at present.Because fire grate and grate gap are bigger, defective such as the situation of leaking coal or not burnouting can appear in ut and bulk coal cinder, falls in the cinder and directly discharges, and causes the wasting of resources big, and economic benefit is low.A kind of in addition is water-coal-slurry torch firing technology, and this technology is coal dust to be pulverized add the entry mixing, adds catalyst again and stirs into the liquid pulpous state, compresses into spraying through liquid pump and burns.The defective of this technical application is that the slurrying processing cost is high, and energy is taken away many by water, and the thermal efficiency descends, and the burning cost is high, becomes the not energy-conservation effect of reduction of discharging.

Summary of the invention

The situation of leaking coal or not burnouting can occur in order to overcome common coal-burning fire grate in the prior art, cause the wasting of resources big, economic benefit is low; Water-coal-slurry torch firing technology slurrying processing cost is high, the thermal efficiency is low, the high problem of burning cost, the present invention provides a kind of fine coal torch firing mechanism, the compact conformation of this fine coal torch firing mechanism, coal dust firing thoroughly, high, the good reliability of heat production efficient.

The technical solution adopted for the present invention to solve the technical problems is: comprise the combustion chamber; Combustion chamber one end is provided with heat energy and discharges outlet; The combustion chamber is a cylindrical shape; The coal powder injection pipe box is connected in the blast pipe, and coal powder injection pipe and blast pipe all tangentially insert the combustion chamber, on the combustion chamber end wall that exports a side near the coal powder injection pipe, lighting-up tuyere is set; The wall limit that deashing observation panel, end wall are set in the middle part of the end wall in the combustion chamber of lighting-up tuyere one side is provided with cleaning door, and heat energy discharges and forms the deliming mouth that porous distributes on the combustion chamber circle wall that exports a side.

Be connected with the collision type nozzle in the end of coal powder injection pipe, the collision type structure of nozzle is that a pipe is divided into two earlier and manages into the synthetic again splayed configuration of Y-shaped, and the collision type nozzle produces collision by two pipe counterparts, and coal dust is scattered, and mixes with air.

The present invention is through above-mentioned concrete design, and coal dust and air intlet are that tangent line is pressed spray, become rotation at the combustion process natural type, have the following advantages: 1, solve the burning time-histories, have enough time and distance that fine coal is thoroughly burnt.2, remaining lime-ash has produced centrifugal force at the burning rotary course, and lime-ash comes off to breach when forwarding the deliming gap position to, separates with the flame thermal current, solves the problem that heat-exchange tube or other permutoid are prone to the grey fouling of knot, increases heat transfer speed and efficient.3, the collision type nozzle produces collision by two pipe counterparts, and coal dust is scattered, and with the air high efficient mixed, greatly improves efficiency of combustion.

Description of drawings

Below in conjunction with accompanying drawing and embodiment detailed content of the present invention is described.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is a collision type structure of nozzle sketch map.

The specific embodiment

As shown in the figure, the present invention includes combustion chamber 1, combustion chamber 1 is by one high temperature resistant 2000 ^OThe pottery of C is processed, and this material has the heatproof height, heat-resisting cold diminishing, and anti-wear performance is good, and the surface is difficult for bonding, the characteristics of long service life.Burner 1 outside can surround insulation by high temperature resistant asbestos, and the protection of shell impact resistance is arranged.Combustion chamber 1 one ends are provided with heat energy and discharge outlet 5; Combustion chamber 1 is a cylindrical shape, and coal powder injection pipe 3 is socketed in the blast pipe 2, and coal powder injection pipe 3 all tangentially inserts combustion chamber 1 with blast pipe 2; On combustion chamber 1 end wall, lighting-up tuyere 4 is set near coal powder injection pipe 3 outlets one side; Lighting-up tuyere 4 designs are at center, fine coal gas tangential inlet rotation place right angle, and igniting can be adopted oils burner 10, closes automatically after oils burner 10 flames are lighted the fine coal admixture of gas.Be connected with collision type nozzle 6 in the end of coal powder injection pipe 3, the concrete structure of collision type nozzle 6 is that a pipe is divided into two earlier and manages into Y-shaped, synthetic again splayed configuration.Collision type nozzle 6 produces collision by two pipe counterparts, and coal dust is scattered, and with the air high efficient mixed, greatly improves efficiency of combustion.The wall limit that deashing observation panel 7, end wall are set in the middle part of 1 end wall in the combustion chamber of lighting-up tuyere 4 one sides is provided with cleaning door 8, and heat energy discharges and forms the deliming mouth 9 that porous distributes on combustion chamber 1 circle wall that exports 5 one sides.Deashing observation panel 7 can be observed on the one hand and form grey burnt state in fired state and the combustion chamber 1, can be in time burnt if any forming grey Jiao through ash in the logical ash rod of the cleaning door 8 usefulness cleaning combustion chamber 1, guarantee the long-term normal operation of fine coal torch firing mechanism.In working order down; Earlier coal is pulverized through pulverizer; When pulverizing, can the heat of stove afterbody discharging be transported to pulverizer through heat energy counterflow exchange device with exchange heat part heat; Through the pipeline fan supercharging coal dust wind is delivered to coal powder injection pipe 3 and collision type nozzle 6, form corner impact during 6 powder delivery of collision type nozzle, dusting forms the fan type.Collision type nozzle 6 ambient airs (or the counterflow exchange device exchanges the big portion pure qi (oxygen) heat of coming) are blown into combustion chamber 1 through blast pipe 2, mix with coal (heating), efficiently burn.Blast pipe 2 is designed to blow into combustion chamber 1 from tangential direction with collision type nozzle 6; Become rotation at the combustion process natural type, be increased in burning time in the combustion chamber 1, heat energy discharges and forms the deliming mouth 9 that porous distributes on combustion chamber 1 circle wall that exports 5 one sides; The coal ash slag that the burning rotation had been burnt is discharged from deliming mouth 9; Separate with flame heat regulating, reduce the knot ash scale formation of heat-exchange tube or other permutoid, flame heat regulating is given thermal sensing system or is needed heat supply place.The present invention can be widely used in steam boiler, heat conducting oil boiler, hot-blast stove, smelting furnace, annealing furnace etc., and on each stove and accessory, using all has good energy-conservation and efficient heat production effect.Above-described embodiment describes the preferred implementation of fine coal torch firing of the present invention mechanism; Be not that the design and the scope of inventing limited; Under the prerequisite that does not break away from the present invention program; Various external form modification and improvement that those skilled in the art make technical scheme of the present invention all should fall into the protection domain of fine coal torch firing of the present invention mechanism.

Claims

1. fine coal torch firing mechanism; Comprise the combustion chamber; Combustion chamber one end is provided with heat energy and discharges outlet, it is characterized in that combustion chamber (1) is cylindrical shape, and coal powder injection pipe (3) is socketed in the blast pipe (2); Coal powder injection pipe (3) and blast pipe (2) all tangentially insert combustion chamber (1); On combustion chamber (1) end wall near coal powder injection pipe (3) outlet one side, lighting-up tuyere (4) is set, the wall limit that deashing observation panel (7), end wall are set in the middle part of the end wall in the combustion chamber (1) of lighting-up tuyere (4) one sides is provided with cleaning door (8), and heat energy discharges and forms the deliming mouth (9) that porous distributes on combustion chamber (1) circle wall that exports (5) one sides.

2. fine coal torch firing according to claim 1 mechanism; It is characterized in that being connected with collision type nozzle (6) in the end of coal powder injection pipe (3); The structure of collision type nozzle (6) is that a pipe is divided into two earlier and manages into Y-shaped, synthetic again splayed configuration, and collision type nozzle (6) produces collision by two pipe counterparts; Coal dust is scattered, mix with air.