CN2436786Y - High-efficient pollution free coal burner - Google Patents

Abstract

The utility model relates to a novel high-efficient pollution free coal burner, comprising a main and an auxiliary combustion chambers, wherein, the upper parts of the two combustion chambers are communicated; a hearth of the main combustion chamber presents a longitudinal ring shape; a caol charging hole and a combustion supporting air port are arranged on the top of the hearth; the lower part of the hearth corresponding to the coal charging hole is provided with a grate the lower surface of which is provided with an open lava outlet; the top of the auxiliary burning chamber is provided with an air outlet; the upper part is provided with a secondary combustion supporting air port, and the lower part is provided with a flame outlet. The utility model has the advantages of simple structure, science, reasonableness, high combustion rate, high thermal efficiency, no smoke, no air pollution and no cinder discharge and belongs to a new generation product of the fire new coal burner.

Description

High efficiency coal burner without pollution

The utility model relates to a kind of novel coal burner, belongs to thermal technology's facility.

Existing coal burner, as various boilers etc., ubiquity burning of coal rate is low, the thermal efficiency is low, discharge fume, have air pollution, needs problems such as a large amount of ashes of discharging, and what have has concurrently, and what have only has a deficiency, always can not satisfy comprehensive requirement of people fully.All the time be not separated from conventional improvement thinking in this technological improvement on the one hand at present, that obtains has little effect, and does not fundamentally thoroughly deal with problems.

The purpose of this utility model is to provide a kind of brand-new high efficiency coal burner without pollution, combustion rate height, thermal efficiency height, and smokeless, no air pollution, no ashes discharge.

High efficiency coal burner without pollution described in the utility model, on its combustion chamber coal filling hole is arranged, major and minor two combustion chambers are arranged, the top of two combustion chambers is connected, main chamber: burner hearth is vertical ring-type, coal filling hole and combustion-supporting air port are located at the top of burner hearth, and the lower furnace portion corresponding with coal filling hole is provided with grate, the lava outlet for opening wide below the grate; Subsidiary combustion chamber: the top is provided with exhaust outlet, and top is provided with the combustion-supporting air port of secondary, and the bottom is provided with flame export.

The utility model can make the coal repeatedly suspension combustion that circulates, burning fully, thermal efficiency height does not have fume emission, no air pollution, the impurity in the coal, stone are melt into a small amount of lava and discharge, no ashes discharge.When using, the lava outlet can be sealed by water seal, and spatter drops on the crushed stone that Shui Zhongshui is broken into the preparing ceramic clinker sample.The utility model has been broken conventional improvement thinking, belongs to a kind of new generation product of brand-new coal burner.

In order to guarantee that the utility model obtains runnability and serviceability preferably, in the utility model:

Coal filling hole is located at the connected entrance place near two combustion chambers, guarantees the good circulation of gas-flow.

The chamber design of main chamber is longitudinally elongated ring-type, guarantees the distribution of combustion-gas flow and circulation rationally.The burner hearth cross section can be an arbitrary shape, considers that air-flow is unimpeded mobile, be advisable with circular, ellipse, and be best with the circle.

Combustion air is sent into by bimetallic tube, and one deck air intake, one deck advance fuel oil or water.

Lava outlet also can be set up in the bottom of subsidiary combustion chamber, and the trouble of prepurging is thoroughly avoided in the discharge that convenient a small amount of cinder that is brought by main chamber or finger stone are melt into lava.

The burner hearth of subsidiary combustion chamber is a tubular, and the combustion-supporting air port of the connected entrance of two combustion chambers and secondary is all tangent with the tubular burner hearth, and the exhaust resistance to obtain to adapt guarantees the normal stable operation of main chamber.As a same reason, flame export is preferably also tangent with the tubular burner hearth.

The utility model coal burner, shell is by the steel plate welding fabrication, be lined with heat-insulation layer and high temperature inner bag in the outer cover of steel plate, to reduce the lost of heat and to bear 1600～1700 ℃ high temperature, grate is used extraordinary industrial refractory material and is made for this reason, have anti-oxidant, high temperature resistant, anti-performance of washing away, can select the fire-resistant grate of resistant to elevated temperatures corundum for use.

During manufacturing, the refractory material that satisfies performance requirement is made atypic castable refractory, burner hearth is made core rod with combustible material, integrated poured forming.Ignition is then finalized the design furnace lining, flue sintering and make by the burning of burner self, and core rod is burner hearth by the cavity that stays after burning.

The common mixed foam industry coal of the suitable burning of the utility model, operating temperature reaches 1700 ℃.

Below in conjunction with an embodiment accompanying drawing the utility model is further described.

Fig. 1, the utility model embodiment structural representation when an application state.

Among the figure: 1 coal filling hole, 2 combustion-supporting air ports, 3 burning negative pressuren zones, 4 flues, 5 outer cover of steel plate, 6 oxidizing fire districts, 7 reducing zones, 8 grates, 9, the outlet of 12 lava, 10 water sealing (sealing water) pipes, 11 ponds, 13 flame exports, 14 tubular burner hearths, the combustion-supporting air port of 15 secondaries, 16 exhaust outlets, 17 communication passage, 18 fire holes.

As shown in the figure, high efficiency coal burner without pollution described in the utility model, coal filling hole 1 is arranged on its combustion chamber, major and minor two combustion chambers are arranged, the top of two combustion chambers is communicated with by communication passage 17, main chamber: burner hearth is longitudinally elongated ring-type, divided combustion district, reducing zone and negative pressuren zone, coal filling hole 1 and combustion-supporting air port 2 are located at the top of burner hearth, coal filling hole 1 is located at the connected entrance place near two combustion chambers, the lower furnace portion corresponding with coal filling hole 1 is provided with corundum grate 8, the lava outlet 9 for opening wide below the grate 8; Subsidiary combustion chamber: the top is provided with exhaust outlet 16, and top is provided with the combustion-supporting air port 15 of secondary, and the bottom is provided with flame export 13, and lava outlet 12 is established in the bottom of subsidiary combustion chamber.The burner hearth 14 of subsidiary combustion chamber is a tubular, and the connected entrance of two combustion chambers, the combustion-supporting air port 15 of secondary, flame export 13 are all tangent with tubular burner hearth 14.Outer cover of steel plate 5 liner high temperature flues 4.

Application ruuning situation of the present utility model is as follows:

Initialization needs first fuel-firing preheating, exhaust outlet 16 opens wide exhaust, fogging oil and air rationally cooperate the back from being mapped to combustion zone 6 from combustion-supporting air port 2 with high speed, from the fire hole that is provided with 18 it is ignited, burn in combustion zone 6 again, and gases such as the carbon dioxide after the burning move downwards, passes grate 8 and enter reducing zone 7, enter in the tubular burner hearth 14 by communication passage 17, last flame is from flame export 13 ejections again.

Because the air velocity that combustion-supporting air port 2 sprays into is very high, make the high-temperature gas that is burning in the combustion zone 6 be compressed and move downward rapidly, then upper cavity forms a negative pressuren zone 3, after 7 unburneds good flue gas in reducing zone is drawn onto negative pressuren zone 3 by negative pressure rapidly, is brought into combustion zone 6 once more by combustion air again and carries out secondary, three burnings etc.Oil spout works on a period of time, when whole fire box temperature reaches 1600～1700 ℃, begin the coal of delivering coal, coal dust falls into reducing zone 7 from coal filling hole 1, and Yin Wendu is very high, coal dust is heated rapidly, the scorching hot combustion-gas flow that comes up from below makes coal obtain redox reaction fast, and coal is gasified, and coal dust descends slowly and suspends, the situation of this suspension and temperature, the ideal conditions of coal gasification just.The imflammable gas that gasification generates rises rapidly and enters negative pressuren zone 3, enters combustion zone 6 then and forms burning.At this moment turn off throttle.Open water valve, change fuel oil into water, according to circumstances, with discharge adjust smaller.After water sprays into, meet high temperature gasifies at once, a large amount of carbon dioxide and water vapour are produced in 6 burnings in the combustion zone, and send reducing zone 7 in streams to a place, generate great number of flammable gas with the coal dust reaction of falling: mainly be carbon monoxide and hydrogen, the adjustment of these high-temperature combustible gas bodies by negative pressuren zone 3 is sent to combustion zone 6 at once and contacts with oxygen and burn continuous burning work so again and again.Rationally the addition of control coal, air, water can form reliable and stable burning.

Grate 8 is put coal cinder bigger in the coal dust and is blocked, and forms the gasifier bed of gas permeability at this.In whole combustion process, not flammable composition in the coal becomes lava magma because of high-temperature fusion, drop onto by lava outlet 9 that water is broken into crushed stone in the pond 11, do not have ashes, also do not have traditional slag, coal dust and flue gas have obtained hundred-percent burning, the combustion rate height, thus the higher thermal efficiency obtained, and smokeless, non-environmental-pollution, the thermal loss of also having avoided flue gas to take away.Even spatter is fallen that part of heat of taking away in the water, also can make the water surface boiling produce steam and participate in again in the reaction in furnace, therefore, combustion heat energy has obtained maximum utilization.

Airborne nitrogen 6 obtains oxidation and forms nitrogen oxide in the combustion zone, and 7 are seized oxygen atom by carbon again to the reducing zone, are reduced into the nitrogen discharge again, have avoided the direct discharge of poisonous nitrogen oxide, have avoided the air pollution of nitrogen.

From main chamber, be discharged to the fuel gas that has fraction in the tubular burner hearth 14 of subsidiary combustion chamber in the flame, spray into air in certain amount from the combustion-supporting air port 15 of secondary, so that obtaining secondary, imflammable gas wherein fully burns, further reduce flue gas and flammable thing, guarantee burning completely.Therefore temperature in the tubular burner hearth 14 is similarly 1600～1700 ℃, and to drop onto Shui Zhongshui by lava outlet 12 broken for the fusion magma that forms of noncombustibles wherein, forms crushed stone.Totally dustless, no at last air-polluting thermal-flame goes to heat corresponding Thermal Equipment acting from flame export 13 ejections.

The utility model must stop coal earlier when quitting work, and the oil spout of cutting off the water supply, and keeps the furnace temperature certain hour, and about tens minutes, the coal and the flue gas that do not have completing combustion to finish in the stove are all burnt, and emptying lava magma, reach the effect of prepurging, shut down then.

As can be seen, the utility model is simple in structure, and is scientific and reasonable, the combustion rate height, and thermal efficiency height, smokeless, no air pollution, no ashes discharge, and belong to a kind of new generation product of brand-new coal burner.

Claims (8)

1, a kind of high efficiency coal burner without pollution, on its combustion chamber coal filling hole is arranged, it is characterized in that having major and minor two combustion chambers, the top of two combustion chambers is connected, main chamber: burner hearth is vertical ring-type, coal filling hole and combustion-supporting air port are located at the top of burner hearth, and the lower furnace portion corresponding with coal filling hole is provided with grate, the lava outlet for opening wide below the grate; Subsidiary combustion chamber: the top is provided with exhaust outlet, and top is provided with the combustion-supporting air port of secondary, and the bottom is provided with flame export.

2, coal burner according to claim 1 is characterized in that the connected entrance place of coal filling hole near two combustion chambers.

3, coal burner according to claim 1, the burner hearth that it is characterized in that main chamber is longitudinally elongated ring-type.

4, coal burner according to claim 1 is characterized in that the bottom of subsidiary combustion chamber is provided with the lava outlet.

5, coal burner according to claim 1, the burner hearth that it is characterized in that subsidiary combustion chamber is a tubular, the combustion-supporting air port of the connected entrance of two combustion chambers and secondary is all tangent with the tubular burner hearth.

6, coal burner according to claim 5 is characterized in that flame export and tubular burner hearth are tangent.

7, coal burner according to claim 1 is characterized in that the shell of coal burner is an outer cover of steel plate, is lined with heat-insulation layer and high temperature inner bag in the outer cover of steel plate.

8, coal burner according to claim 7 is characterized in that grate is the fire-resistant grate of corundum.

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